Pump head of radial piston pump, and radial piston pump

Abstract

A pump head (100) of a radial piston pump, and a radial piston pump (200). The pump head (100) of a radial piston pump comprises at least two piston cylinder mechanisms (2) and a housing (1), wherein the housing (1) comprises a transmission assembly (11), an upper cover (12), a lower cover (13), an upper housing (14) and a lower housing (15), the upper housing (14) and the lower housing (15) being snap-fitted together to form an accommodating space inside; the piston cylinder mechanisms (2) are mounted in the accommodating space in a rotationally symmetrical manner; the transmission assembly (11) is arranged in the accommodating space; the transmission assembly (11) is connected to the piston cylinder mechanisms (2); and the upper cover (12) is connected to the upper housing (14), the lower cover (13) is connected to the lower housing (15), the upper cover (12) is in communication with water inlets of all the piston cylinder mechanisms (2), and the lower cover (13) is in communication with water outlets of all the piston cylinder mechanisms (2). The radial piston pump (200) comprises the pump head (100) of a radial piston pump.

Description

Radial plunger pump head and radial plunger pump TECHNICAL FIELD

[0001] The present application relates to the technical field of plunger pump, and particularly relates to a radial plunger pump head and a radial plunger pump. BACKGROUND

[0002] The plunger pump is a kind of volumetric hydraulic pump, which changes the capacity in the cylinder through the repeated movement of the plunger in the cylinder hole, and absorbs low-pressure liquid into the cylinder to output high-pressure liquid. The plunger pump is widely used in the hydraulic system of engineering machinery due to its high output pressure, high efficiency, large power, convenient variable, and strong durability. According to the arrangement of the plunger in the cylinder hole, the plunger pump can be divided into a radial plunger pump head and an axial plunger pump.

[0003] The existing radial plunger pump head is mostly single-cylinder, and the output liquid flow is low, and the pressure generated in the cylinder is large, which easily leads to reduced service life.

[0004] SUMMARY

[0005] The present application relates to the technical field of plunger pump, and particularly relates to a radial plunger pump head and a radial plunger pump.

[0006] In order to solve the above problems, the present application provides a radial plunger pump head and a radial plunger pump.

[0007] In a first aspect, the present application discloses a radial plunger pump head, which comprises,

[0008] At least two piston cylinder mechanisms;

[0009] A shell comprises a transmission assembly, an upper cover, a lower cover, an upper shell and a lower shell, the upper shell and the lower shell are connected in a clamping manner, and an accommodation space is formed in the interior, the piston cylinder mechanisms are installed in the accommodation space in a rotationally symmetrical manner, the transmission assembly is arranged in the accommodation space, and the transmission assembly is connected with the piston cylinder mechanisms.

[0010] The upper cover is connected with the upper shell, the lower cover is connected with the lower shell, the upper cover is communicated with the water inlets of all the piston cylinder mechanisms, and the lower cover is communicated with the water outlets of all the piston cylinder mechanisms.

[0011] Preferably, the transmission assembly comprises a bearing, a planetary gear and a resonance cam, the bearing is connected with the resonance cam, and the planetary gear is connected with the bearing in a clamping manner.

[0012] The planetary gear is provided with a driving shaft, and the number of the driving shafts is matched with the number of the piston cylinder mechanisms.

[0013] Preferably, the transmission assembly comprises a worm, a bevel gear and an eccentric rotating member, the worm is connected with the bevel gear, and the eccentric rotating member is connected with the bevel gear.

[0014] Preferably, the transmission assembly comprises a bevel gear set, the bevel gear set comprises at least two bevel gears, and any two of the bevel gears are connected with each other or coaxially.

[0015] Preferably, the transmission assembly comprises an eccentric rotating member, the eccentric rotating member is arranged in the accommodating space, and the eccentric rotating member drives the piston cylinder mechanism.

[0016] Preferably, the eccentric rotating member comprises a connecting sleeve and an eccentric output rod, one end of the connecting sleeve is fixedly connected with the eccentric output rod, and the other end of the connecting sleeve is provided with a special-shaped hole;

[0017] The outer diameter of the eccentric output rod is smaller than the outer diameter of the connecting sleeve, and the circumferential side surface of the eccentric output rod is inscribed in the circumferential side surface of the connecting sleeve.

[0018] Preferably, the center of the upper shell and the upper cover is provided with a through hole with a matching shape;

[0019] The special-shaped hole is arranged in a direction towards the through hole.

[0020] Preferably, the transmission assembly comprises a bearing sleeve, the bearing sleeve is connected with the eccentric rotating member, and the bearing sleeve is arranged at one end of the eccentric output rod away from the connecting sleeve.

[0021] Preferably, the lower shell is provided with a rotating groove and a protruding shaft, the protruding shaft is arranged at the center of the rotating groove, and all the piston cylinder mechanisms are rotationally symmetrical about the central axis of the protruding shaft.

[0022] The rotating groove and the eccentric rotating member are coaxially arranged, and the rotating groove and the eccentric rotating member can rotate about the central axis of the protruding shaft.

[0023] Preferably, the transmission assembly comprises a driving connecting rod, and the number of the driving connecting rods corresponds to the number of the piston cylinder mechanisms.

[0024] The driving connecting rod comprises a sleeve part, a connecting handle part and a spherical part, the sleeve part, the connecting handle part and the spherical part are sequentially connected and integrally formed.

[0025] The sleeve part is sleeved with the eccentric output rod, the spherical part is inserted into the piston cylinder mechanism, and the connecting handle part is arranged in a straight bar shape or a curved shape.

[0026] Preferably, all the driving connecting rods are sequentially arranged between the connecting sleeve and the bearing sleeve.

[0027] Preferably, the upper cover comprises a water inlet pipe and a water inlet coupling, and the water inlet pipe is fixedly connected with the water inlet coupling.

[0028] The water inlet coupling is mounted on the water inlet assembly.

[0029] Preferably, the upper shell comprises a water inlet sealing strip, a shunt cavity is formed between the water inlet coupling and the upper shell, and the water inlet sealing strip is arranged on the inner wall of the shunt cavity.

[0030] Preferably, the water inlet coupling is provided with a water inlet groove and a water inlet hole, the water inlet groove is arranged on the side close to the water inlet assembly, the water inlet hole penetrates through the body of the water inlet coupling, and the water inlet groove and the water inlet hole are in communication.

[0031] Preferably, the surface of the upper shell towards the water inlet coupling is provided with a first water groove, and the shape of the first water groove matches the shape of the water inlet groove.

[0032] A plurality of water inlet holes are arranged in the first water groove, one water inlet hole corresponds to the water inlet of one piston-cylinder mechanism, and the position of the water inlet hole corresponds to the position of the piston-cylinder mechanism.

[0033] Preferably, the upper shell comprises a plurality of water inlet channels, the water inlet channels are in communication with the water inlet holes, and one water inlet channel is arranged corresponding to one piston-cylinder mechanism.

[0034] One water inlet channel corresponds to one water inlet hole.

[0035] Preferably, the upper shell is provided with a first mounting groove, the shape of the first mounting groove matches the shape of the water inlet coupling, the thickness of the water inlet coupling matches the depth of the first mounting groove, and the water inlet coupling is mounted in the first mounting groove.

[0036] Preferably, the lower cover comprises a water outlet pipe and a water outlet coupling, and the water outlet pipe is fixedly connected with the water outlet coupling.

[0037] Preferably, the water outlet coupling is provided with a sealing strip groove, a water outlet groove and a water outlet hole, and the sealing strip groove is arranged around the water outlet groove.

[0038] The water outlet groove and the sealing strip groove are arranged on the side close to the lower shell, and the water outlet hole is arranged in the range of the water outlet groove.

[0039] The lower shell comprises a water outlet sealing strip.

[0040] The surface of the lower shell facing the water outlet coupling member is provided with a second water groove, the outer shape of the second water groove matches the outer shape of the water outlet groove, the water outlet sealing strip is installed in the sealing strip groove, and the water outlet sealing strip is in contact with the inner wall of the second water groove.

[0041] Preferably, the lower shell is provided with a water pipeline and a liquid outlet hole, the liquid outlet hole is arranged at one end of the water pipeline close to the lower cover;

[0042] One of the water pipelines corresponds to one of the piston cylinder mechanisms.

[0043] Preferably, the lower cover is provided with an insertion pipe, and the upper cover, the upper shell and the lower shell are provided with connecting holes;

[0044] The upper cover comprises a connecting fastener which passes through the connecting holes;

[0045] The connecting fastener passes through the upper shell and the lower shell to connect the insertion pipe.

[0046] Preferably, the piston cylinder mechanism comprises a water inlet piston assembly, a water outlet piston assembly and a piston cylinder body;

[0047] The water inlet piston assembly and the water outlet piston assembly are respectively arranged in the piston cylinder body, and the water inlet piston assembly is connected with the transmission assembly.

[0048] Preferably, the piston cylinder body comprises a sealing ring;

[0049] The sealing ring is arranged at the water inlet port of the cylinder body and the water outlet port of the cylinder body.

[0050] Preferably, the piston cylinder mechanism comprises a water inlet plug assembly, and the water inlet plug assembly is arranged in the water inlet channel of the upper shell.

[0051] Preferably, the water inlet plug assembly comprises a water inlet plug and a first elastic member, the water inlet plug is connected with the first elastic member, and the water inlet plug is installed in the water inlet channel;

[0052] The first elastic member abuts the water inlet plug at one end of the water inlet channel close to the water inlet hole.

[0053] Preferably, the piston cylinder body is internally provided with a liquid channel;

[0054] The liquid channel comprises a water inlet channel, a connecting channel and a water outlet channel, and the connecting channel connects the water inlet channel and the water outlet channel respectively;

[0055] The water inlet port of the cylinder body is in communication with the connection position of the water inlet channel and the connecting channel, and the water outlet port of the cylinder body is in communication with the water outlet channel.

[0056] Preferably, the cylinder water outlet is arranged close to the joint of the water outlet channel and the connecting channel.

[0057] Preferably, the water inlet piston assembly is installed in the water inlet channel.

[0058] The water inlet piston assembly comprises a piston sleeve, a piston connecting piece and a moving piston, the piston connecting piece is connected with the transmission assembly and the moving piston at two ends respectively, the moving piston is interference connected with the piston sleeve, and the piston sleeve is fixedly installed in the water inlet channel.

[0059] Preferably, the water outlet piston assembly comprises a water outlet plug and a second elastic piece, one end of the water outlet plug abuts against the outlet of the water outlet channel, and the other end of the water outlet plug is sleeved with the second elastic piece.

[0060] Preferably, the water outlet plug comprises a water outlet plug part and a water outlet sleeve part, the water outlet plug part and the water outlet sleeve part are integrally formed, and the second elastic piece is sleeved on the water outlet sleeve part.

[0061] Preferably, the piston cylinder mechanism comprises a sealing assembly.

[0062] The sealing assembly comprises a sealing head and a sealing plug, the sealing head is arranged on the opening of the connecting channel arranged on the surface of the piston cylinder body, and the sealing plug is interference connected with the water outlet channel.

[0063] Preferably, the water outlet piston assembly is arranged in the water outlet channel, one end of the water outlet piston assembly abuts against the joint of the water outlet channel and the connecting channel, and the other end of the water outlet piston assembly abuts against the sealing plug.

[0064] In a second aspect, the present application discloses a radial plunger pump, which comprises the radial plunger pump head according to any one of claims 1-32.

[0065] Preferably, the radial plunger pump comprises a driving piece and a speed reducer, the driving piece is connected with the speed reducer, and the speed reducer is connected with the transmission assembly.

[0066] Preferably, the radial plunger pump comprises a driving fastener, the driving fastener is connected with the speed reducer through the upper cover.

[0067] Compared with the prior art, the above technical scheme provided by the present application has the following advantages:

[0068] 1. The radial piston pump head and radial piston pump provided by the application, wherein the radial piston pump head is provided with a plurality of piston cylinder mechanisms, the pressure of the liquid with the same flow rate can be evenly dispersed into each piston cylinder mechanism, the pump head can output liquid with high pressure and large flow rate, and the effect of liquid pressure on the pump head is reduced. In addition, the liquid output from the lower cover has high pressure through the cooperation of the transmission assembly and the piston cylinder mechanism, and the liquid output from all the piston cylinder mechanisms is converged into the lower cover, so that the flow rate of the liquid output from the lower cover is increased. In the radial piston pump, the driving mechanism drives the plurality of piston cylinder mechanisms to reciprocate, the pressure of the liquid with the same flow rate is evenly dispersed into each piston cylinder mechanism through the plurality of cylinder bodies, the pump body can output liquid with high pressure and large flow rate, the effect of liquid pressure on the pump body is reduced, and the service life of the pump body is prolonged.

[0069] 2. The piston connecting piece of each piston cylinder mechanism is connected with the driving connecting rod through a spherical part, the rotation of the driving connecting rod in a multi-angle range can be realized, the jumping of the driving connecting rod on the eccentric rotating part can be reduced, and the vibration and noise in the pump body are reduced.

[0070] 3. The driving connecting rod of the driving mechanism directly drives the piston and the plunger to reciprocate, the gear is omitted, the movement of the compression cylinder body is sequentially performed between each piston cylinder through the plurality of piston cylinders, the pressure in each cylinder body is more stable and uniform, and the pressure in each cylinder body can be distributed, so that the pressure on each cylinder body is reduced and the service life of the cylinder body is prolonged.

[0071] 4. A single driving mechanism drives a plurality of piston cylinder mechanisms to operate, and the overall input energy consumption is reduced under the output of the same liquid flow rate. BRIEF DESCRIPTION OF DRAWINGS

[0072] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0073] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0074] Fig. 1 is a structural schematic diagram one of a radial piston pump head provided by the first embodiment of the application;

[0075] Fig. 2 is a structural schematic diagram two of a radial piston pump head provided by the first embodiment of the application;

[0076] Fig. 3 is an exploded structural schematic view of a radial piston pump head according to the first embodiment of the present application;

[0077] Fig. 4 is a schematic view of the connection structure of a driving link, an eccentric rotating member and a retaining ring of a radial piston pump head according to the first embodiment of the present application;

[0078] Fig. 5 is a structural schematic view of an eccentric rotating member of a radial piston pump head according to the first embodiment of the present application;

[0079] Fig. 6 is a running state diagram one of a driving link of a radial piston pump head according to the first embodiment of the present application;

[0080] Fig. 7 is a running state diagram two of a driving link of a radial piston pump head according to the first embodiment of the present application;

[0081] Fig. 8 is a running state diagram three of a driving link of a radial piston pump head according to the first embodiment of the present application;

[0082] Fig. 9 is a structural schematic view of a driving link of a radial piston pump head according to the first embodiment of the present application;

[0083] Fig. 10 is a schematic view of the connection structure of a transmission assembly and a piston cylinder mechanism of a radial piston pump head according to the first embodiment of the present application;

[0084] Fig. 11 is an exploded structural schematic view of an upper cover and an upper shell of a radial piston pump head according to the first embodiment of the present application;

[0085] Fig. 12 is a structural schematic view of an upper cover of a radial piston pump head according to the first embodiment of the present application;

[0086] Fig. 13 is a structural schematic view one of an upper shell of a radial piston pump head according to the first embodiment of the present application;

[0087] Fig. 14 is a structural schematic view two of an upper shell of a radial piston pump head according to the first embodiment of the present application;

[0088] Fig. 15 is a schematic view of the connection structure of an upper shell and a water inlet plug assembly of a radial piston pump head according to the first embodiment of the present application;

[0089] Fig. 16 is an exploded structural schematic view of an upper shell and a piston cylinder body of a radial piston pump head according to the first embodiment of the present application;

[0090] Fig. 17 is an exploded structural schematic view of a lower cover and a lower shell of a radial piston pump head according to the first embodiment of the present application;

[0091] Fig. 18 is a structural schematic view of a lower cover of a radial piston pump head according to the first embodiment of the present application;

[0092] Fig. 19 is a structural schematic diagram of a lower shell of a radial piston pump head according to the first embodiment of the present application;

[0093] Fig. 20 is a structural schematic diagram of a lower shell of a radial piston pump head according to the first embodiment of the present application;

[0094] Fig. 21 is a structural schematic diagram of a connection structure of an eccentric rotating member, a bearing sleeve and a lower shell of a radial piston pump head according to the first embodiment of the present application;

[0095] Fig. 22 is a structural schematic diagram of a connection structure of an eccentric rotating member, a bearing sleeve and an upper shell of a radial piston pump head according to the first embodiment of the present application;

[0096] Fig. 23 is a structural schematic diagram of a connection structure of a piston cylinder mechanism and a driving connecting rod of a radial piston pump head according to the first embodiment of the present application;

[0097] Fig. 24 is an exploded structural schematic diagram of a piston cylinder mechanism of a radial piston pump head according to the first embodiment of the present application;

[0098] Fig. 25 is a structural schematic diagram of a piston cylinder mechanism of a radial piston pump head according to the first embodiment of the present application;

[0099] Fig. 26 is a sectional structural schematic diagram in the direction of BB' in Fig. 25;

[0100] Fig. 27 is a sectional structural schematic diagram in the direction of CC' in Fig. 25;

[0101] Fig. 28 is a structural schematic diagram of a piston cylinder body of a radial piston pump head according to the first embodiment of the present application;

[0102] Fig. 29 is a structural schematic diagram of a piston cylinder body of a radial piston pump head according to the first embodiment of the present application;

[0103] Fig. 30 is a sectional structural schematic diagram in the direction of AA' in Fig. 24;

[0104] Fig. 31 is a sectional structural schematic diagram in the direction of AA' in Fig. 24;

[0105] Fig. 32 is a structural schematic diagram of a transmission assembly of a radial piston pump head according to the second embodiment of the present application;

[0106] Fig. 33 is an exploded structural schematic diagram of a transmission assembly of a radial piston pump head according to the second embodiment of the present application;

[0107] Fig. 34 is a structural schematic diagram of a transmission assembly of a radial piston pump head according to the third embodiment of the present application;

[0108] Fig. 35 is an exploded structural schematic view of a transmission assembly of a pump head of a radial piston pump according to a third embodiment of the present application;

[0109] Fig. 36 is a structural schematic view of a transmission assembly of a pump head of a radial piston pump according to a fourth embodiment of the present application;

[0110] Fig. 37 is an exploded structural schematic view of a transmission assembly of a pump head of a radial piston pump according to the fourth embodiment of the present application;

[0111] Fig. 38 is a structural schematic view of a transmission assembly of a pump head of a radial piston pump according to a fifth embodiment of the present application;

[0112] Fig. 39 is an exploded structural schematic view of a transmission assembly of a pump head of a radial piston pump according to the fifth embodiment of the present application;

[0113] Fig. 40 is a structural schematic view of a radial piston pump according to a sixth embodiment of the present application;

[0114] Fig. 41 is an exploded structural schematic view of a driving mechanism, an upper cover and an upper shell of the radial piston pump according to the sixth embodiment of the present application.

[0115] Explanation of reference signs: 100, pump head of radial piston pump; 200, radial piston pump; 1, shell; 11, transmission assembly; 110, driving link; 1101, collar portion; 1102, connecting handle portion; 1103, spherical portion; 111, eccentric rotating member; 1111, connecting sleeve; 1112, eccentric output rod; 1113, special-shaped opening; 112, abutting collar; 113, bearing; 114, planetary gear; 1141, driving shaft; 115, worm; 116, helical gear; 117, helical gear set; 118, rotating shaft; 119, resonant cam; 1191, helical tooth; 1192, cam; 12, upper cover; 121, water inlet pipe; 122, water inlet coupling; 1221, water inlet groove; 1222, water inlet hole; 123, plug-in member; 124, connecting hole; 125, connecting fastener; 126, fastener through hole; 13, lower cover; 131, water outlet pipe; 132, water outlet coupling; 1321, sealing strip groove; 1322, water outlet groove; 1323, water outlet hole; 14, upper shell; 141, water inlet sealing strip; 142, first water groove; 1421, water inlet hole; 143, water inlet channel; 144, first mounting groove; 145, insertion slot; 146, through opening; 147, limiting groove; 15, lower shell; 151, water outlet sealing strip; 152, water outlet channel; 153, liquid outlet hole; 154, second mounting groove; 155, insertion pipe; 156, rotating groove; 157, protruding shaft; 158, placement groove; 1581, limiting member; 159, second water groove; 2, piston-cylinder mechanism; 21, piston-cylinder body; 211, cylinder water inlet; 212, cylinder water outlet; 213, sealing ring; 214, reinforcing rib; 215, liquid channel; 2151, water inlet channel; 2152, connecting channel; 2153, water outlet channel; 22, water inlet piston assembly; 221, piston sleeve; 222, piston connecting member; 223, moving piston; 23, water outlet piston assembly; 231, water outlet plug member; 2311, water outlet plug portion; 2312, water outlet sleeve portion; 232, second elastic member; 24, water inlet plug assembly; 241, water inlet plug member; 2411, water inlet plug portion; 2412, water inlet sleeve portion; 242, first elastic member; 25, sealing assembly; 251, sealing head; 252, sealing plug; 3, driving mechanism; 31, driving member; 32, speed reducer; 33, driving fastener. DETAILED DESCRIPTION

[0116] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0117] Embodiment one:

[0118] Referring to FIG. 1-3, the first embodiment of the present application discloses a radial piston pump head 100 for delivering various fluid media, such as water, oil, hydraulic oil, etc., comprising at least two piston cylinder mechanisms 2 and a shell 1, the piston cylinder mechanisms 2 are installed in the shell 1, the piston cylinder mechanisms 2 are installed in the shell 1 in a rotationally symmetrical manner, the shell 1 is provided with a liquid flow channel, the piston cylinder mechanisms 2 are connected to the liquid flow channel on the shell 1, the liquid flows in the shell 1 and the piston cylinder mechanisms 2, the pistons or plungers inside the piston cylinder mechanisms 2 can reciprocate in the piston cylinder mechanisms 2 to compress the space in the cylinder and increase the space in the cylinder, increase the liquid output pressure, and increase the liquid output flow.

[0119] Specifically, a plurality of piston cylinder mechanisms 2 are provided in the pump head, the pressure of the liquid with the same flow rate can be uniformly dispersed to each piston cylinder mechanism 2, the pump head can output liquid with high pressure and large flow rate, and the effect of liquid pressure on the pump head is reduced. In addition, the pump head cooperates with the transmission assembly 11 and the piston cylinder mechanisms 2 to make the liquid output from the lower cover 13 have high pressure, and the liquid output from all the piston cylinder mechanisms 2 is combined into the lower cover 13, so that the liquid flow rate output from the lower cover 13 is increased.

[0120] In this embodiment, the number of piston cylinder mechanisms 2 is three, which can be better distributed in the shell 1 and achieve the best effect of pressure increase and flow increase, but the number of piston cylinder mechanisms 2 is not limited to the number in this embodiment, and can be two, four, five or more than six. Specifically, the piston cylinder mechanisms 2 are arranged on the same plane, so that the piston cylinder mechanisms 2 occupy less space in the shell 1.

[0121] As an embodiment, the distances from all the cylinder water inlets 211 to the water inlet holes 1421 of the upper shell 14 are the same, and the distances from all the cylinder water outlets 212 to the liquid outlet holes 153 of the lower cover 13 are the same. It can be understood that the piston cylinder mechanisms 2 are arranged on the same plane, the water inlet path and the water outlet path are consistent, the space occupied by the piston cylinder mechanisms 2 is reduced, and the path length of the liquid flowing through different piston cylinder mechanisms 2 is consistent.

[0122] As an embodiment, all the piston cylinder mechanisms 2 can be divided into at least two groups installed in the accommodation space of the shell 1, and the piston cylinder mechanisms 2 in adjacent different groups are distributed in cross. It can be understood that the piston cylinder mechanisms 2 can be arranged in multiple layers in the shell 1, and the piston cylinder mechanisms 2 in each layer are arranged in a spaced manner, so that there is a space above and below any piston cylinder mechanism 2 in the current layer, or another piston cylinder mechanism 2 is arranged at the same position after being spaced by one layer from any piston cylinder mechanism 2 in the current layer, so that more piston cylinder mechanisms 2 are arranged in the shell 1.

[0123] Referring to Figs. 1-3, the housing 1 comprises an upper cover 12, an upper shell 14, a lower shell 15, a lower cover 13 and a transmission assembly 11, the upper cover 12 is connected with the upper shell 14, the lower cover 13 is connected with the lower shell 15, the upper shell 14 is connected with the lower shell 15 by buckling, and an accommodation space is formed inside, the piston-cylinder mechanism 2 and the transmission assembly 11 are installed in the accommodation space, and the transmission assembly 11 is connected with the piston-cylinder mechanism 2. Among them, the transmission assembly 11 is used for transmitting the force applied by the driving motor to the piston-cylinder mechanism 2, driving the piston or plunger of the piston-cylinder mechanism 2 to reciprocate, and the upper shell 14 and the lower shell 15 are connected with each other by the buckling members arranged thereon.

[0124] The upper cover 12 is installed on the surface of the upper shell 14 away from the lower shell 15, and the lower cover 13 is installed on the surface of the lower shell 15 away from the upper shell 14. The upper cover 12 and the lower cover 13 are provided with a plug-in part 123, the upper shell 14 and the lower shell 15 are provided with a plug-in groove 145, the plug-in part 123 is matched with the plug-in groove 145, the plug-in part 123 is inserted into the plug-in groove 145, so that the upper cover 12 is fixedly installed on the upper shell 14, and the lower cover 13 is fixedly installed on the lower shell 15.

[0125] In addition, the lower cover 13 is provided with an insertion pipe 155, the upper cover 12, the upper shell 14 and the lower shell 15 are provided with connecting holes 124, the upper cover 12 comprises a connecting fastener 125, the connecting fastener 125 passes through the connecting holes 124, and the connecting fastener 125 passes through the upper shell 14 and the lower shell 15 to connect the insertion pipe 155. Among them, the connecting fastener 125 is a fastening screw, and the inner wall of the insertion pipe 155 is provided with a thread matched with the connecting fastener 125. Specifically, after the upper cover 12, the upper shell 14, the lower shell 15 and the lower cover 13 are installed in sequence, there is a gap between each mechanism due to the connection by plug-in or buckling connection, the connection of the connecting fastener 125 and the insertion pipe 155 can increase the stability of the connection of each structure of the housing 1, reduce the gap between the structures, and ensure the sealing of the inside.

[0126] Referring to Figs. 4-5, the transmission assembly 11 comprises a driving link 110, a bearing sleeve 112 and an eccentric rotating part 111, the eccentric rotating part 111 is coupled with the bearing sleeve 112, and the driving link 110 is coupled with the bearing sleeve 112. The eccentric rotating part 111 is coupled with an external driving device to drive the driving link 110 to move, the driving link 110 is connected with the piston or plunger of the piston-cylinder mechanism 2, thereby providing driving force for the movement of the piston-cylinder mechanism 2 inside, and the bearing sleeve 112 is arranged at the end of the eccentric rotating part 111.

[0127] Specifically, the driving link 110 is connected with the eccentric rotating member 111 at one end and connected with any one of the piston cylinder mechanisms 2 at the other end. The eccentric rotating member 111 comprises an eccentric output rod 1112 and a connecting sleeve 1111. One end of the connecting sleeve 1111 is fixedly connected with the eccentric output rod 1112, and the other end is provided with a special-shaped hole 1113 for connecting with an external driving device. A bearing sleeve 112 is arranged at the end of the eccentric output rod 1112 away from the connecting sleeve 1111, and the bearing sleeve 112 is used for limiting the movement of the driving link 110. All the driving links 110 are arranged between the connecting sleeve 1111 and the bearing sleeve 112 in sequence. The number of the driving links 110 corresponds to the number of the piston cylinder mechanisms 2. One driving link 110 provides driving force for the reciprocating movement of the piston cylinder mechanism 2.

[0128] It can be understood that the driving link 110 directly drives the piston and the plunger to reciprocate, and the gear is omitted. Through the arrangement of multiple piston cylinder mechanisms, the movement of the compression cylinder body is sequentially performed between each piston cylinder mechanism. The pressure in each cylinder body is more stable and uniform, and the pressure in each cylinder body can be distributed, thereby reducing the pressure on each cylinder body and prolonging the service life of the cylinder body. Meanwhile, the liquid enters the piston cylinder mechanism 2 for pressurization, and all the liquid can be pumped out at high pressure, so that the pump body pumps out high-pressure liquid.

[0129] Referring to FIGS. 6-8, the eccentric rotating member 111 is driven by the external driving device to rotate around the output shaft of the external driving device, and traverse all the piston cylinder mechanisms 2, so that all the driving links 110 connected with the eccentric rotating member 111 are sequentially pushed into the piston cylinder mechanisms 2 and pulled out of the piston cylinder mechanisms 2, thereby completing the movement of the compression space in the piston cylinder mechanism 2. After one rotation of the eccentric rotating member 111, all the piston cylinder mechanisms 2 can complete the reciprocating movement of the piston or the plunger.

[0130] In particular, the number of the driving links 110 corresponds to the number of the piston cylinder mechanisms 2. One driving link 110 drives one piston cylinder mechanism 2 to reciprocate the piston or the plunger.

[0131] As an embodiment, the bearing sleeve 112 is made of elastic material, and the inner diameter of the bearing sleeve 112 is less than or equal to the outer diameter of the eccentric rotating member 111. The bearing sleeve 112 is connected with the eccentric rotating member 111 in interference, so as to limit the piston cylinder mechanism 2 installed on the eccentric rotating member 111 from being separated from the side of the bearing sleeve 112. The elastic material facilitates the installation of the bearing sleeve 112, and the self-elasticity of the bearing sleeve 112 makes the installation more secure.

[0132] The eccentric rotating member 111 is integrally formed with the connecting sleeve 1111 and the eccentric output rod 1112. One end of the connecting sleeve 1111 is fixedly connected to the eccentric output rod 1112. Specifically, the connecting sleeve 1111 is provided with a special-shaped hole 1113 at one end to sleevedly connect the output shaft of the external driving device, so that the external driving device is more stably connected to the connecting sleeve 1111, and the connecting sleeve 1111 can ensure synchronous rotation with the output shaft of the external driving device. The driving connecting rod 110 and the abutting sleeve ring 112 are installed on the eccentric output rod 1112. The driving connecting rod 110 can rotate around the eccentric output rod 1112. The abutting sleeve ring 112 is fixedly installed on one end of the eccentric output rod 1112 to limit the driving connecting rod 110, so as to avoid the driving connecting rod 110 from moving out of the range of the eccentric output rod 1112 during operation. The connecting sleeve 1111 has a cylindrical shape. The eccentric output rod 1112 rotates around the central axis of the connecting sleeve 1111, so that the operating tracks of the driving connecting rods 110 are the same, and the forces applied to the piston cylinder mechanism 2 are the same.

[0133] In addition, the outer diameter of the eccentric output rod 1112 is smaller than the outer diameter of the connecting sleeve 1111, and the circumferential side surface of the eccentric output rod 1112 is inscribed in the circumferential side surface of the connecting sleeve 1111. Specifically, the eccentric output rod 1112 is parallel to the output shaft of the external driving device, and the eccentric output rod 1112 is arranged close to the side wall of the connecting sleeve 1111. When the driving member 31 rotates, the connecting sleeve 1111 rotates around the output shaft of the driving member 31, and the eccentric output rod 1112 rotates around the output shaft of the driving member 31, so as to drive the driving connecting rod 110 to reciprocate.

[0134] Referring to FIGS. 9-10, the driving connecting rod 110 includes a sleeve ring part 1101, a connecting handle part 1102, and a spherical part 1103, which are sequentially connected and integrally formed. The sleeve ring part 1101 is arranged in a circular ring shape. The connecting handle part 1102 is arranged in a straight bar shape or a curved shape. The spherical part 1103 has a spherical shape. The sleeve ring part 1101 is sleeved with the eccentric output rod 1112. The spherical part 1103 is inserted into the piston cylinder mechanism 2. The driving member 31 connected by the sleeve ring part 1101 applies a force to drive the sleeve ring part 1101, the connecting handle part 1102, and the spherical part 1103, so as to make the piston structure in the piston cylinder mechanism 2 reciprocate, compress the liquid in the piston cylinder mechanism 2, pump out high-pressure liquid, and achieve the purpose of high-pressure output liquid. In addition, each piston cylinder mechanism 2 is connected with the driving connecting rod 110 through the spherical part 1103, so as to realize rotation of the driving connecting rod 110 in a multi-angle range, reduce the jumping of the driving connecting rod 110 on the output shaft of the driving member 31, and thus reduce the vibration and noise emitted in the pump body.

[0135] Optionally, the inner wall surface of the sleeve part 1101 and the surface of the spherical part 1103 can be coated with lubricating oil, which can reduce the friction between the sleeve part 1101 and the eccentric rotating part 111 and the friction between the spherical part 1103 and the piston cylinder mechanism 2, make the relative sliding between the structures more smooth, and also reduce the noise caused by friction.

[0136] In particular, the outer diameter of the eccentric output rod 1112 is equal to the inner diameter of the sleeve part 1101 of the driving connecting rod 110, the outer surface of the eccentric output rod 1112 matches and contacts the inner surface of the driving connecting rod 110, by reducing the gap at the connection between the eccentric output rod 1112 and the driving connecting rod 110, the collision between the eccentric output rod 1112 and the driving connecting rod 110 can be reduced, the noise emission can be reduced, the vibration between the structures can be reduced, and the service life of the radial piston pump head 100 can be prolonged.

[0137] Referring to FIG. 11, the center of the upper shell 14 and the upper cover 12 is provided with a through hole 146 which is matched in shape and position; the special-shaped hole 1113 of the connecting sleeve 111 is directed towards the direction of the through hole 146, which can facilitate the connection of the connecting sleeve 111 with the external driving equipment to obtain driving force, so as to drive the internal driving connecting rod 110 to operate. The through hole 146 is arranged to avoid the range of liquid flow in the upper shell 14, so as to prevent the transmitted liquid from leaking out of the hole, and to prevent the driving part 31 from contacting the liquid.

[0138] Referring to FIG. 12, the upper cover 12 comprises a water inlet pipe 121 and a water inlet connecting piece 122, the water inlet pipe 121 is fixedly connected with the water inlet connecting piece 122, and the water inlet connecting piece 122 is installed on the water inlet assembly. The water inlet pipe 121 is installed on one surface of the water inlet connecting piece 122, and the water inlet pipe 121 is used for inputting liquid.

[0139] As an embodiment, the upper shell 14 is provided with a first mounting groove 144 which is matched in shape with the water inlet connecting piece 122, the thickness of the water inlet connecting piece 122 is matched with the depth of the first mounting groove 144, and the upper cover 12 is installed in the first mounting groove 144. Specifically, the first mounting groove 144 is used for installing the upper cover 12, and after the upper cover 12 is placed in the first mounting groove 144, the upper cover 12 is connected through the plug-in structure provided on the upper shell 14. It can be understood that the shape of the water inlet connecting piece 122 is consistent with the shape of the first mounting groove 144, the water inlet connecting piece 122 is installed in the first mounting groove 144, the water inlet pipe 121 is directed away from the water inlet assembly, and the first mounting groove 144 can facilitate the installation of the pump body by the installer, and after the upper cover 12 is installed on the water inlet assembly, the steps between the structures are reduced, the appearance of the pump body is more beautiful, and the like.

[0140] The water inlet connector 122 is provided with a water inlet groove 1221 and a water inlet hole 1222. The water inlet groove 1221 is formed on the side of the upper cover 12 close to the upper shell 14, and the water inlet hole 1222 penetrates the water inlet connector 122 and is in communication with the water inlet groove 1221. Specifically, the water inlet pipe 121 and the water inlet groove 1221 are arranged on two opposite surfaces of the water inlet connector 122, and the water inlet hole 1222 is arranged at the end of the water inlet pipe 121 connected to the water inlet connector 122, that is, the water inlet hole 1222 is installed in the range of the water inlet pipe 121. Liquid is input from the water inlet pipe 121 and then passes through the water inlet hole 1222 and enters the water inlet groove 1221.

[0141] Referring to FIGS. 13-16, the upper shell 14 includes a water inlet sealing strip 141, and a first water groove 142 is arranged on the surface facing the water inlet connector 122. The first water groove 142 has a shape matching that of the water inlet groove 1221, and the cross-sectional area of the water inlet groove 1221 is greater than that of the first water groove 142. The water inlet sealing strip 141 is connected to the first water groove 142 and the water inlet groove 1221, respectively.

[0142] Specifically, a shunt cavity is formed between the water inlet connector 122 and the upper shell 14, and the shunt cavity is formed by the first water groove 142 and the water inlet groove 1221. The water inlet sealing strip 141 is arranged on the inner wall of the shunt cavity.

[0143] The water inlet groove 1221 has a shape corresponding to the water inlet sealing strip 141. The water inlet sealing strip 141 contacts the groove walls of the first water groove 142 and the water inlet groove 1221, respectively. The water inlet groove 1221 covers the first water groove 142, and a liquid flow channel is formed between the water inlet groove 1221 and the first water groove 142. The water inlet sealing strip 141 is arranged between the groove walls of the water inlet groove 1221 and the first water groove 142, and the surface of the water inlet sealing strip 141 tightly contacts the groove walls of both the water inlet groove 1221 and the first water groove 142. Specifically, the arrangement of the water inlet sealing strip 141 can increase the sealing degree between the water inlet component and the water inlet assembly, so as to prevent liquid from leaking out of the gap between the water inlet connector 122 and the first shell 1. In addition, since liquid enters the pump, the pump is in a high-pressure environment. By adding the water inlet sealing strip 141, the contact between the inside and the outside of the pump can be reduced, the high-pressure environment in the pump can be better created, the upper limit of the pressure can be increased, the sealing degree of the internal environment can be further increased, the transmission of internal noise to the outside can be reduced, and the sound emitted by the pump body is smaller.

[0144] A plurality of water inlet holes 1421 are formed in the first water groove 142. One water inlet hole 1421 corresponds to the water inlet of one piston-cylinder mechanism 2, and the position of the water inlet hole 1421 corresponds to the position of the piston-cylinder mechanism 2.

[0145] Specifically, the first water tank 142 and the water inlet groove 1221 constitute a distribution cavity, which is distributed at the water inlet hole 1421 and enters the piston cylinder mechanism 2 corresponding to the position of the water inlet hole 1421. The first shell 1 is provided with a plurality of water inlet channels 143 corresponding to the position of the water inlet hole 1421, the water inlet channel 143 is in communication with the water inlet hole 1421, one water inlet channel 143 is arranged corresponding to one piston cylinder mechanism 2, and one water inlet channel 143 is arranged corresponding to one water inlet hole 1421 of the water inlet connecting piece 122.

[0146] The shapes of the water inlet groove 1221 and the first water tank 142 are radial, extending from one water inlet hole 1222 to a plurality of water inlet holes 1421. Through the arrangement of the holes and channels on the first shell 1 and the water inlet connecting piece 122, the single liquid channel 215 is distributed to meet the requirement that the liquid flows into a plurality of piston cylinder mechanisms 2 for pressurization treatment.

[0147] In addition, the upper shell 14 includes a plurality of water inlet channels 143, which are in communication with the water inlet holes 1421, one water inlet channel 143 is arranged corresponding to one piston cylinder mechanism 2, and one water inlet channel 143 is arranged corresponding to one water inlet hole 1421. The water inlet channel 143 is arranged on the side of the upper shell 14 away from the upper cover 12, the water inlet channel 143 is in communication with the piston cylinder mechanism 2, the liquid enters the water inlet channel 143 from the water inlet hole 1421, and then enters the inside of the piston cylinder mechanism 2 through the water inlet channel 143.

[0148] Specifically, the water inlet hole 1421 and the water inlet hole 1222 are in communication through the distribution cavity, that is, when the liquid of the water inlet pipe 121 enters the distribution cavity through the water inlet hole 1222, the liquid is respectively distributed from different water inlet holes 1421, and then enters the piston cylinder mechanism 2 through the water inlet channel 143 corresponding to the water inlet hole 1421, thereby completing the liquid input process.

[0149] Referring to FIGS. 17-18, the lower cover 13 includes a water outlet pipe 131 and a water outlet connecting piece 132, the water outlet pipe 131 and the water outlet connecting piece 132 are fixedly connected, and the inner diameter of the water outlet pipe 131 is greater than the inner diameter of the water inlet pipe 121.

[0150] The water outlet connecting piece 132 is provided with a sealing strip groove 1321, a water outlet groove 1322 and a water outlet hole 1323, the water outlet hole 1323 is in communication with the water outlet pipe 131, the sealing strip groove 1321 surrounds the water outlet groove 1322; the water outlet groove 1322 and the sealing strip groove 1321 are arranged on the side close to the lower shell 15, the water outlet hole 1323 is arranged within the range of the water outlet groove 1322, the water outlet hole 1323 penetrates through the body of the water outlet connecting piece 132, and the water outlet hole 1323 is in communication with the water outlet pipe 131.

[0151] Referring to Figs. 19-22, the lower shell 15 is provided with a second mounting groove 154, which is matched with the shape of the water outlet coupling member 132, and the thickness of the water outlet coupling member 132 is matched with the depth of the second mounting groove 154, and the lower cover 13 is mounted in the second mounting groove 154. It can be understood that the water outlet coupling member 132 is matched with the shape of the second mounting groove 154, and the water outlet coupling member 132 is mounted in the second mounting groove 154, and the water outlet pipe 131 is directed away from the lower shell 15, and the second mounting groove 154 is provided, which can facilitate the installation of the pump body by the installer, and at the same time, the lower cover 13 can be installed after the lower shell 15, the steps between the structures are reduced, and the appearance of the pump head is more beautiful.

[0152] The lower shell 15 is provided with a rotating groove 156 and a protruding shaft 157, the protruding shaft 157 is arranged at the center position of the rotating groove 156, all the piston cylinder mechanisms 2 are rotationally symmetrical about the central axis of the protruding shaft 157, the rotating groove 156 is coaxially arranged with the eccentric rotating member 111, and the rotating groove 156 and the eccentric rotating member 111 can rotate about the central axis of the protruding shaft 157. The abutting ring 112 is tangent to the protruding shaft 157 and inscribed in the rotating groove 156, the abutting ring 112 is in contact with the bottom of the rotating groove 156, and the end of the eccentric output rod 1112 is in contact with the bottom of the rotating groove 156.

[0153] Specifically, the protruding shaft 157 and the rotating groove 156 combine to form an annular groove, the diameter of the abutting ring 112 corresponds to the width of the groove, when the eccentric rotating member 111 rotates, the eccentric output rod 1112 and the abutting ring 112 rotate around the protruding shaft 157, through the groove formed by the protruding shaft 157 and the rotating groove 156, the rotation range of the eccentric rotating member 111 can be limited, avoiding the eccentric output rod 1112 and the abutting ring 112 running out of the predetermined trajectory, in addition, the eccentric output rod 1112 is in contact with the bottom of the rotating groove 156, and the abutting ring 112 moves in the annular groove, which can prevent the abutting ring 112 from separating from the eccentric output rod 1112, and ensure the stability of the internal mechanism.

[0154] In particular, the abutting ring 112 adopts a circular ring shape, through the arrangement of the shape, the outer surface of the abutting ring 112 can be in contact with the groove wall of the rotating groove 156 at all times, which can avoid the vibration caused by the operation of the abutting ring 112 with other shapes, and at the same time, make the rotation of the eccentric rotating member 111 drive each driving link 110 more stable and smooth, and avoid the noise caused by the operation of other shapes.

[0155] The lower shell 15 includes a water outlet sealing strip 151, and the surface of the lower shell 15 directed to the water outlet coupling member 132 is provided with a second water groove 159, which is matched with the shape of the water outlet groove 1322, the water outlet sealing strip 151 is mounted in the sealing strip groove 1321, and the water outlet sealing strip 151 is in contact with the inner wall of the second water groove 159.

[0156] The water outlet sealing strip 151 is installed in the sealing strip groove 1321 which is arranged around the outer edge of the water outlet groove 1322, the water outlet sealing strip 151 surrounds the edge of the water outlet groove 1322, the size of the water outlet sealing strip 151 matches the sealing strip groove 1321, or the cross section of the water outlet sealing strip 151 contains a range greater than the cross section of the sealing strip groove 1321, one surface of the water outlet sealing strip 151 is in contact with the edge of the second water groove 159, that is, the height of the water outlet sealing strip 151 is greater than the depth of the sealing strip groove 1321, the water outlet connector 132 is connected with the upper shell 14, the water outlet sealing strip 151 is abutted against the edge of the second water groove 159 and the groove wall, and the other side is clamped into the sealing strip groove 1321, so that the second water groove 159 and the water outlet groove 1322 are limited by the water outlet sealing strip 151, preventing liquid from overflowing, and at the same time, ensuring that the pressure inside the pump head is stable, preventing pressure relief from this position.

[0157] The lower shell 15 is provided with a water passage 152 and a liquid outlet hole 153, the liquid outlet hole 153 is arranged at one end of the water passage 152 close to the lower cover 13, and one water passage 152 corresponds to one piston cylinder mechanism 2. That is, the liquid outlet hole 153 is a port of the water passage 152, the liquid outlet hole 153 is arranged in the range of the second water groove 159, the number of the liquid outlet hole 153 is the same as the number of the piston cylinder mechanism 2, and one water passage 152 corresponds to one piston cylinder mechanism 2.

[0158] Specifically, the liquid is output from the piston cylinder mechanism 2, enters the second water groove 159 and the water outlet groove 1322 from the water passage 152, and enters the second water groove 159 and the water outlet groove 1322 from the liquid outlet hole 153, and flows together at the water outlet hole 1323 of the second water groove 159 and the water outlet groove 1322, and the water outlet pipe 131 outputs the liquid flowing together, so that the liquid is output from the water outlet pipe 131 after being pressurized in the piston cylinder mechanism 2, thereby achieving the purpose of high-pressure and large-flow output of liquid.

[0159] It can be understood that the second water groove 159 and the water outlet groove 1322 are edge-fitted, the water outlet sealing strip 151 in the sealing strip groove 1321 is fitted with the second water groove 159 and the water outlet groove 1322, a flow collection cavity is formed by the second water groove 159 and the water outlet groove 1322 through the snap-fitting, the liquid enters the flow collection cavity from the water passage 152 and the liquid outlet hole 153, the flow collection cavity has a radial shape, the flow collection cavity flows together all the liquids entering from the liquid outlet hole 153, and outputs the liquid through the water outlet hole 1323 to pump out of the pump.

[0160] Referring to FIGS. 23-31, the piston cylinder mechanism 2 includes a water inlet piston assembly 22, a water outlet piston assembly 23, and a piston cylinder body 21, the water inlet piston assembly 22 and the water outlet piston assembly 23 are arranged in the piston cylinder body 21 respectively, and the water inlet piston assembly 22 is connected with the transmission assembly 11.

[0161] Specifically, the piston cylinder 21 contains liquid, the water inlet piston assembly 22 is used to compress the piston cylinder 21 space, the water outlet piston assembly 23 is used to block the outlet of the piston cylinder 21, the water inlet piston assembly 22 provides driving force through the driving connecting rod 110, and the pressure in the piston cylinder 21 can be changed due to the operation of the water inlet piston assembly 22. The water outlet piston assembly 23 can move, open or block the outlet of the piston cylinder 21 under the condition of pressure change.

[0162] The piston cylinder 21 is provided with a reinforcing rib 214, the upper shell 14 is provided with a limiting groove 147, the limiting groove 147 is matched with the shape of the reinforcing rib 214, the lower shell 15 is provided with a placing groove 158, the piston cylinder 21 is installed in the placing groove 158, and the placing groove 158 is provided with a limiting piece 1581 matched with the reinforcing rib 214. It can be understood that the matching of the reinforcing rib 214 and the limiting groove 147 can stably install the piston cylinder 21 in the containing space in the upper shell 14 and the lower shell 15, the limiting piece 1581 can prevent the piston cylinder 21 from being separated from the installation position, the upper shell 14 and the lower shell 15 are provided with openings corresponding to the position of the piston cylinder 21, and the piston cylinder 21 is placed corresponding to the openings, which can facilitate the installation of the pump body, that is, part of the surface of the piston cylinder 21 is exposed.

[0163] In particular, the piston cylinder 21 is made of metal material, which can improve the strength of the piston cylinder 21 itself and can withstand stronger pressure. By using metal material, the structure of the reinforcing rib 214 on the surface of the piston cylinder 21 can be used as a heat dissipation structure, which can diffuse the heat energy generated in the piston cylinder 21 when the water inlet piston assembly 22 reciprocates.

[0164] Referring to FIGS. 23-31, the piston cylinder 21 includes a cylinder water inlet 211 and a cylinder water outlet 212, the cylinder water inlet 211 is connected with the water inlet hole 1421 of the upper shell 14, and the cylinder water outlet 212 is connected with the water outlet of the lower cover 13; the cylinder water inlet 211 and the cylinder water outlet 212 are arranged on two opposite surfaces of the piston cylinder 21. Specifically, the cylinder water inlet 211 and the cylinder water outlet 212 are arranged on two surfaces of the piston cylinder 21 respectively, liquid enters the cylinder water inlet 211 from the water inlet hole 1421 and is output to the water outlet from the cylinder water outlet 212.

[0165] Optionally, the distance between all the cylinder water inlets 211 and the water inlet hole 1421 of the water inlet piece is the same, and the distance between all the cylinder water outlets 212 and the liquid outlet hole 153 of the water outlet piece is the same. It can be understood that each piston cylinder 21 is uniformly arranged, the piston cylinder 21 is arranged around the output shaft of the driving piece 31, and each piston cylinder 21 is installed in a star shape.

[0166] Referring to Figs. 23-31, the piston cylinder 21 is internally provided with a liquid passage 215, through which liquid enters the cylinder inlet 211 and is outputted from the cylinder outlet 212. The liquid passage 215 comprises an inlet passage 2151, a connecting passage 2152 and an outlet passage 2153, the connecting passage 2152 connecting the inlet passage 2151 and the outlet passage 2153 respectively, the inlet piston assembly 22 is installed in the inlet passage 2151, the outlet piston assembly 23 is arranged in the outlet passage 2153, the cylinder inlet 211 is communicated with the connecting position of the inlet passage 2151 and the connecting passage 2152, the cylinder outlet 212 is communicated with the outlet passage 2153, the opening of one end of the inlet passage 2151 and the opening of one end of the outlet passage 2153 are arranged on the same surface of the piston cylinder 21, and the surface is adjacent to the surface on which the cylinder inlet 211 is arranged, the opening of one end of the connecting passage 2152 away from the inlet passage 2151 is arranged on a surface of the piston cylinder 21, and the cylinder outlet 212 is arranged close to the connecting position of the outlet passage 2153 and the connecting passage 2152. Specifically, the liquid passage 215 is arranged in a work type, the connecting passage 2152 is provided with a first passage communicated with the inlet passage 2151 and a second passage communicated with the outlet passage 2153, the first passage is arranged at the end of the connecting passage 2152, and the second passage is arranged at one end, the other end of the outlet passage 2153 is not connected with the outlet passage 2153, which is used for cleaning the inside and pouring out the residual liquid. In addition, the inner diameter of the inlet passage 2151 and the outlet passage 2153 is increased, so that the liquid entering the liquid passage 215 can be temporarily stored in the liquid passage 215, and when the liquid needs to be pumped out, the temporarily stored liquid can be pumped out, thereby increasing the output flow of the liquid.

[0167] In particular, the piston cylinder 21 is made by casting process, the pipeline and the opening are predetermined during the manufacturing, and the opening of the connecting passage 2152 is prepared for the casting process, so that the demolding and other treatments during the manufacturing are more convenient and fast.

[0168] Referring to Figs. 23-31, the piston cylinder mechanism 2 comprises a sealing assembly 25, which comprises a sealing head 251 and a sealing plug 252, the sealing head 251 is arranged on the opening of the connecting passage 2152 arranged on the surface of the piston cylinder 21, and the sealing plug 252 is connected with the outlet passage 2153 in an interference fit.

[0169] The sealing head 251 is used to plug the opening of the connecting passage 2152, and the sealing plug 252 is used to plug the opening of the outlet passage 2153, the sealing assembly 25 is arranged to keep the liquid passage 215 sealed and ensure the output position of the liquid to avoid exposure from other positions.

[0170] The piston cylinder 21 is a hexahedron structure, including six surfaces, namely a first surface, a second surface, a third surface, a fourth surface, a fifth surface, and a sixth surface. The first surface is opposite to the fourth surface, the second surface is opposite to the sixth surface, and the third surface is opposite to the fourth surface. The first surface is adjacent to the second surface and the third surface, and the fourth surface is adjacent to the fifth surface and the sixth surface. The cylinder water inlet 211 is arranged on the first surface, the cylinder water outlet 212 is arranged on the second surface, the opening of the water inlet channel 2151 and the opening of the water outlet channel 2153 are arranged on the fifth surface, and the opening of the connecting channel 2152 is arranged on the sixth surface.

[0171] Specifically, the sealing head 251 is installed at the port of the connecting channel 2152. The sealing head 251 is installed on the opening on the sixth surface of the piston cylinder 21, which is left for the convenience of manufacturing. The sealing head 251 blocks the opening, so as to prevent the liquid in the piston cylinder 21 from flowing out of the opening, and maintain the sealing degree of the piston cylinder 21. The sealing plug 252 blocks the water outlet channel 2153, so as to prevent the liquid from leaking out of the water outlet channel 2153. The water outlet channel 2153 is used to allow more liquid to enter the piston cylinder 21. At the same time, when the liquid is output, the liquid has a certain space to stay, so as to avoid that the pressure borne by the cylinder is too large when the liquid is output. That is, the piston cylinder 21 has a buffering capacity. When the liquid with high pressure enters the piston cylinder 21, it will be stored in the water outlet channel 2153 or the water inlet channel 2151, so as to buffer the impact force when it enters. At the same time, the liquid is pumped out of the piston cylinder 21 under the action of pressure, so as to prolong the service life of the piston cylinder 21 and the pump body under the effect of high-pressure output.

[0172] Referring to FIGS. 23-31, the piston cylinder mechanism 2 includes a water inlet blocking assembly 24 arranged in the water inlet channel 143 of the upper shell 14. Specifically, the water inlet blocking assembly 24 can block the connecting hole 124 of the water inlet channel 2151 to the cylinder water inlet, so as to block the liquid from entering the water inlet channel 2151.

[0173] Referring to FIGS. 23-31, the water inlet blocking assembly 24 includes a water inlet blocking piece 241 and a first elastic piece 242. The water inlet blocking piece 241 is connected with the first elastic piece 242. The water inlet blocking piece 241 is installed in the water inlet channel 143, and the first elastic piece 242 abuts the water inlet blocking piece 241 at one end of the water inlet channel 143 close to the water inlet hole 1421.

[0174] Specifically, the water inlet blocking member 241 can abut against the water inlet hole 1421, the water inlet blocking member 241 can move in the water inlet channel 143, the first elastic member 242 can abut against the water inlet blocking member 241, the driving link 110 drives the water inlet piston assembly 22 to compress in the water inlet channel 2151, the liquid can push the water inlet blocking member 241 to move, the first elastic member 242 deforms, the water inlet hole 1421 is communicated with the water inlet channel 143 and the water inlet channel 2151, the liquid enters the piston cylinder 21, and when the driving link 110 drives the water inlet piston assembly 22 to extend out of the water inlet channel 2151, the water inlet blocking member 241 abuts against the water inlet hole 1421 to block the water inlet hole 1421.

[0175] In addition, the elastic force generated by the elastic action of the first elastic member 242 can keep the water inlet piston member abutting against the water inlet hole 1421, and can prevent the water inlet blocking member 241 from blocking the cylinder water inlet 211, so that the water inlet piston member cannot block the liquid from entering the piston cylinder 21 from the cylinder water inlet 211. That is, the elastic deformation of the first elastic member 242 caused by the compression force has a certain limit, the water inlet piston member abuts against the water inlet hole 1421 and can move in the water inlet channel 143, but has a certain moving distance, so as to avoid the abutting water inlet piston member from contacting the cylinder water inlet at the other end.

[0176] Referring to FIGS. 23-31, the water inlet blocking member 241 is divided into a water inlet blocking part 2411 and a water inlet sleeve part 2412, the water inlet blocking part 2411 and the water inlet sleeve part 2412 are integrally formed, the first elastic member 242 is sleeved on the water inlet sleeve part 2412, the length of the first elastic member 242 is greater than the length of the water inlet sleeve part 2412, the outer diameter of the first elastic member 242 is greater than the outer diameter of the water inlet sleeve part 2412, the outer diameter of the water inlet blocking part 2411 is less than the inner diameter of the water inlet channel 143, and the outer diameter of the water inlet blocking part 2411 is greater than the inner diameter of the water inlet hole 1421. Specifically, the water inlet blocking part 2411 is arranged close to the water inlet hole 1421 and is used for abutting against and blocking the water inlet hole 1421, the water inlet sleeve part 2412 is used for mounting the first elastic member 242, the two ends of the first elastic member 242 respectively contact the water inlet blocking part 2411 and the cylinder water inlet 211, when the pressure inside the piston cylinder 21 increases, the water inlet blocking part 2411 blocks the water inlet hole 1421 to prevent the liquid from entering the piston cylinder 21 at this time, and also prevents the liquid from flowing back from the piston cylinder 21 into the water inlet channel 143, so that the liquid is output in a predetermined flow direction. In particular, the first elastic member 242 in the embodiment is a spring.

[0177] Referring to FIG. 23-31, the piston cylinder 21 comprises a sealing ring 213, which is arranged at the cylinder water inlet 211 and the cylinder water outlet 212. Specifically, the sealing ring 213 is divided into a water inlet sealing ring 213 and a water outlet sealing ring 213. The inner diameter of the cylinder water inlet 211 is the same as that of the water inlet channel 143, and the inner diameter of the cylinder water outlet 212 is the same as that of the water channel 152. The water inlet sealing ring 213 contacts the water inlet channel 143 and the cylinder water inlet 211, respectively, and the water outlet sealing ring 213 contacts the water channel 152 of the water outlet assembly and the cylinder water outlet 212, respectively.

[0178] Specifically, the thickness of the water inlet sealing ring 213 is smaller than the distance between the port of the water inlet channel 143 and the cylinder water inlet 211, and the thickness of the water outlet sealing ring 213 is smaller than the distance between the port of the water channel 152 and the cylinder water outlet 212. The water inlet channel 143 and the cylinder water inlet 211 are blocked by the water inlet sealing ring 213, and the water channel 152 and the cylinder water outlet 212 are blocked by the water outlet sealing ring 213. The water inlet sealing ring 213 and the water outlet sealing ring 213 allow the liquid in the piston cylinder 21 to seep out from the two positions, thereby ensuring the sealing of the inside of the pump body. Therefore, the water inlet channel 143 is in a sealed state, the water inlet blocking piece 241 and the first elastic piece 242 are arranged in the water inlet channel 143, and the water inlet blocking piece 241 moves in the water inlet channel 143.

[0179] Referring to FIG. 23-31, the water inlet piston assembly 22 comprises a piston sleeve 221, a piston connecting piece 222, and a moving piston 223. The piston connecting piece 222 is connected to the transmission assembly 11 and the moving piston 223 at both ends, respectively. The moving piston 223 is interference-connected with the piston sleeve 221, and the piston sleeve 221 is fixedly installed in the water inlet channel 2151.

[0180] Specifically, the internal shape of the piston sleeve 221 corresponds to the external shape of the piston connecting piece 222 and the external shape of the moving piston 223. The piston connecting piece 222 and the moving piston 223 can move in the piston sleeve 221, that is, the outer diameter of the piston sleeve 221 matches the inner diameter of the water inlet channel 2151, and the piston sleeve 221 is interference-fitted with the water inlet channel 2151. The piston connecting piece 222 and the moving piston 223 reciprocate in the piston sleeve 221. By reciprocating the moving piston 223 in the piston sleeve 221, the pressure in the piston cylinder 21 can be changed, thereby forming a high-pressure environment or a low-pressure environment in the piston cylinder 21, so that the liquid is drawn into the piston cylinder 21 or output from the piston cylinder 21.

[0181] Referring to FIGS. 23-31, the position where the piston connecting piece 222 connects the driving link 110 is set as a spherical groove corresponding to the spherical part 1103 of the driving link 110, the spherical part 1103 is installed into the spherical groove, the driving link 110 can rotate relative to the piston connecting piece 222, at the same time, because the width of the groove of the spherical groove is greater than the inner diameter of the opening of the spherical groove, the movement of the driving link 110 can drive the piston connecting piece to move, through the setting of the spherical part 1103 and the spherical groove, the connection stability between the piston connecting piece 222 and the moving piston 223 can be increased, at the same time, the spherical part 1103 can rotate in the spherical groove, the driving link 110 can rotate at multiple angles, the jumping situation of the driving link 110 on the eccentric output rod 1112 is reduced, the vibration of the driving link 110 is reduced, and the noise is reduced.

[0182] Referring to FIGS. 23-31, one end of the moving piston 223 is provided with a groove with an inner diameter greater than the inner diameter of the opening, the piston connecting piece 222 is provided with an insertion part matched with the shape of the groove, the piston connecting piece 222 is inserted into the groove of the moving piston 223 through the insertion part, so that the piston connecting piece and the moving piston 223 are stably connected, so that the driving link 110, the moving piston 223 and the piston connecting piece 222 move synchronously, the other end of the moving piston 223 has an outer diameter greater than or equal to the inner diameter of the piston sleeve 221, so that the moving piston 223 and the piston sleeve 221 are in interference fit, the piston cylinder 21 can be kept sealed, and liquid is prevented from overflowing between the moving piston 223 and the piston sleeve 221.

[0183] The driving link 110 can drive the moving piston 223 to move, so that the space in the water inlet channel 2151 becomes larger or smaller, because the piston cylinder 21 is in a sealed state, under the action of atmospheric pressure, the inside of the piston cylinder 21 will also change, in order to keep the balance of the pressure inside the piston cylinder 21, the piston structure installed in the water inlet channel 143 and the water outlet channel 2153 will move, through the setting, liquid can be pumped into the piston cylinder 21 and pumped out of the piston cylinder 21, so that the pump body outputs high-pressure liquid.

[0184] In particular, the piston sleeve 221, the piston connecting piece 222 and the moving piston 223 are made of elastic material.

[0185] Optionally, the piston sleeve 221 is provided with a sealing ring 213 near the opening of the water inlet channel 2151 at one end, the sealing ring 213 is arranged between the water inlet channel 2151 and the piston sleeve 221, used to fill and block the gap between the piston sleeve 221 and the piston cylinder 21, so as to ensure the sealing of the piston cylinder 21, and at the same time, the connection stability between the piston sleeve 221 and the piston cylinder 21 is enhanced, so as to avoid that the piston sleeve 221 moves out of the water inlet channel 2151 of the piston cylinder 21 along with the driving link 110.

[0186] Referring to FIG. 23-31, the water outlet piston assembly 23 is installed at one end of the water outlet passage 2153, and one end of the water outlet piston assembly 23 abuts against the connection between the water outlet passage 2153 and the connection passage 2152, and the other end abuts against the sealing plug 252, which blocks one end of the water outlet passage 2153, so that the liquid from the connection passage 2152 enters the water outlet passage 2153, and the liquid can be stored, and when the driving link 110 pushes the moving piston 223 into the piston sleeve 221, the liquid pushes the water outlet piston assembly 23 to move, so that the liquid enters the water outlet passage 2153 and is output from the piston cylinder 21 through the cylinder water outlet 212.

[0187] Referring to FIG. 23-31, the water outlet piston assembly 23 includes a water outlet blocking piece 231 and a second elastic piece 232, one end of the water outlet blocking piece 231 abuts against the outlet of the water outlet passage 2153, and the other end is sleeved with the second elastic piece 232. Specifically, the water outlet blocking piece 231 is used to block the connection opening between the connection passage 2152 and the water outlet passage 2153, and block the connection opening at the corresponding time, so that the liquid is prevented from flowing back to the piston cylinder 21 when the pressure of the liquid in the piston cylinder 21 decreases, and the second elastic piece 232 is used to abut against the water outlet blocking piece 231, and the water outlet blocking piece 231 is abutted against the connection opening between the water outlet passage 2153 and the connection passage 2152 by the elastic force of the second elastic piece 232 itself, and when the driving link 110 pushes the moving piston 223 into the water inlet passage 2151, the liquid pushes the water outlet blocking piece 231 to move, at this time, the force exerted by the external liquid on the water outlet blocking piece 231 is greater than the force exerted by the second elastic piece 232, and the water outlet blocking piece 231 moves towards the sealing plug 252, so that the connection opening between the connection passage 2152 and the water outlet passage 2153 is opened, the liquid enters the water outlet passage 2153, and the space inside the water outlet passage 2153 can accommodate the liquid, which can provide part of the buffering function when the liquid is output, avoid the liquid being directly output from the connection passage 2152 to the cylinder water outlet 212, reserve the buffering space for the piston cylinder 21 to output the liquid, make the radial piston pump head 100 have the buffering capacity, reduce the vibration inside the pump body, make the piston cylinder 21 bear smaller pressure, avoid the wall surface of the piston cylinder 21 being broken due to directly bearing too large force, and prolong the service life of the pump body.

[0188] In particular, the second elastic piece 232 in the embodiment adopts a spring.

[0189] Referring to FIG. 23-31, the water outlet blocking piece 231 includes a water outlet blocking part 2311 and a water outlet sleeving part 2312, the water outlet blocking part 2311 and the water outlet sleeving part 2312 are integrally formed, the second elastic piece 232 is sleeved on the water outlet sleeving part 2312, and the length of the water outlet sleeving part 2312 is smaller than the length of the second elastic piece 232.

[0190] Specifically, the outer diameter of the water outlet blocking part 2311 is greater than the opening inner diameter of the water outlet channel 2153, the outer diameter of the water outlet blocking part 2311 is smaller than the inner diameter of the water outlet channel 2153, the water outlet blocking part 2311 and the water outlet sleeve part 2312 are both set in a cylindrical shape, the water outlet blocking part 2311 can block the opening at the connection between the water outlet channel 2153 and the connection channel 2152, and can temporarily block the liquid from flowing from the connection channel 2152 into the water outlet channel 2153, the water outlet sleeve part 2312 is held by the second elastic member 232, one end of the second elastic member 232 abuts against the surface of the water outlet blocking part 2311, the water outlet blocking part 2311 exerts a force on the second elastic member 232, causing the second elastic member 232 to elastically deform and generate an elastic force, thereby blocking the water outlet blocking part 231 from moving closer to the sealing plug 252, when the pressure in the piston cylinder 21 decreases, the second elastic member 232 pushes the water outlet blocking part 2311 to move, re-blocking the opening at the connection between the water outlet channel 2153 and the connection channel 2152, and blocking the liquid from flowing back from the water outlet channel 2153 into the connection channel 2152 under the action of pressure, thereby ensuring that the water outlet pipe 131 of the pump body is in output liquid state and preventing liquid from being sucked back.

[0191] It can be understood that driving the connecting rod 110 to move the piston connecting part 222 and the moving piston 223 in the piston sleeve 221 will change the pressure in the piston cylinder 21, causing the liquid to be sucked into the piston cylinder 21 and pressed out of the piston cylinder 21, thereby making the output piston cylinder 21 have the characteristic of high pressure, and the specific process is as follows:

[0192] Driving the connecting rod 110 to move the moving piston 223 into the piston sleeve 221 compresses the internal space of the piston cylinder 21, and the liquid is pushed by the moving piston 223 to increase the pressure in the piston cylinder 21, and the liquid continuously flows into the water outlet channel 2153, the water inlet channel 143 and the connection channel 2152. Due to the increase in the pressure in the piston cylinder 21, the liquid continuously exerts pressure on other positions, causing the water inlet blocking part 241 to move closer to the water inlet hole 1421 of the first housing 1 to block the liquid from entering the piston cylinder 21, and in the water outlet channel 2153, the water outlet blocking part 231 is pushed by the liquid in the piston cylinder 21 to compress the second elastic member 232, the connection opening between the connection channel 2152 and the water outlet channel 2153 is opened, and the liquid is output from the cylinder water outlet 212. At this time, the liquid has high pressure and increased flow rate.

[0193] When the driving link 110 drives the moving piston 223 to move outwards from the piston sleeve 221, the pressure in the piston cylinder 21 decreases gradually, and the liquid in the piston cylinder 21 outside the piston cylinder 21 pushes the water inlet plug 241 into the cylinder water inlet 211 and compresses the first elastic member 242. Due to the elasticity of the first elastic member 242, the cylinder water inlet 211 is not completely blocked, and the liquid enters the piston cylinder 21 from the cylinder water inlet 211 and quickly fills the space-increased water inlet channel 2151. Since the pressure in the piston cylinder 21 decreases, the pressure pushing the water outlet plug 231 to compress the second elastic member 232 in the water outlet channel 2153 decreases, causing the water outlet plug 231 to be pushed by the liquid and abut against the opening between the connecting channel 2152 and the water outlet channel 2153, blocking the opening of the water outlet channel 2153 to the liquid, preventing the liquid from being sucked into the piston cylinder 21 from the cylinder water outlet 212, and keeping the piston cylinder 21 to suck liquid from the cylinder water inlet 211 and output liquid from the cylinder water outlet 212.

[0194] Embodiment two:

[0195] Referring to FIGS. 32-33, the second embodiment of the present application discloses a radial plunger pump head 100. The difference between this embodiment and the first embodiment is that the transmission assembly 11a includes a bearing 113a, a planetary gear 114a, and a resonance cam 119a. The bearing 113a is connected to the resonance cam 119a, and the planetary gear 114a is connected to the bearing 113a. The outer ring of the bearing 113a is connected to the planetary gear 114a, and the inner ring is connected to the cam 1192a of the resonance cam 119a. The resonance cam 119a rotates around the external driving device. The resonance cam 119a is provided with a connecting hole 124a connected to the output shaft of the external driving device to obtain driving force. The connecting hole 124a is inscribed in the cam 1192a of the resonance cam 119a, and the cam 1192a of the resonance cam 119a is inscribed in the outer shaft side of the resonance cam 119a. The planetary gear 114a rotates coaxially with the cam 1192a of the resonance cam 119a.

[0196] The planetary gear 114a is provided with a drive shaft 1141a, the number of which is matched with the number of the piston cylinder mechanism, the drive shaft 1141a is sleeved with the sleeve part 1101a of the drive connecting rod 110a, and the drive shaft 1141a is connected with the drive connecting rod 110a. By rotating the planetary gear 114a around the output shaft of the external driving device, the drive shaft 1141a connected with the drive connecting rod 110a can be driven to move, the drive connecting rod 110a is connected with the piston cylinder mechanism, so that the drive connecting rod 110a drives the piston connecting part of the piston cylinder mechanism and the moving piston to move in the piston sleeve, thereby increasing the pressure of the liquid pumped out of the piston cylinder mechanism, and the flow rate of the liquid output is increased.

[0197] In addition, the planetary gear 114a is matched with the resonant cam 119a, and a bearing 113a is arranged between the planetary gear 114a and the resonant cam 119a. By using the rolling friction mode, the friction loss in the movement process of the mechanism can be reduced, the service life of the movement mechanism is prolonged, and the noise generated in the movement of the mechanism is reduced.

[0198] Embodiment three:

[0199] Referring to FIGS. 34-35, the third embodiment of the present application discloses a radial piston pump head 100. The difference between this embodiment and the first embodiment is that the transmission assembly 11b includes a rotating shaft 118b, a worm 115b, a bevel gear 116b and an eccentric rotating part 111b. The worm 115b is connected with the bevel gear 116b in meshing connection, and the eccentric rotating part 111b is connected with the bevel gear 116b.

[0200] Specifically, the worm 115b is connected with an external driving device, the worm 115b drives the bevel gear 116b to operate, the bevel gear 116b and the eccentric rotating part 111b rotate coaxially around the rotating shaft 118b, the eccentric rotating part 111b includes a connecting sleeve 1111b and an eccentric output rod 1112b, the outer periphery of the eccentric output rod 1112b intersects with the outer periphery of the connecting sleeve 1111b, the eccentric output rod 1112b is connected with the drive connecting rod 110b, and the sleeve part 1101b of the drive connecting rod 110b is sleeved on the eccentric output rod 1112b.

[0201] It can be understood that the external driving device provides driving force for the worm 115b to drive the bevel gear 116b to rotate, so that the drive connecting rod 110b is driven by the eccentric rotating part 111 to drive the moving piston and the piston connecting part to reciprocate in the piston sleeve. By using the cooperation of the worm 115b, the bevel gear 116b and the eccentric rotating part 111b, a larger speed reduction ratio is achieved, and the purpose of large torque output is achieved. In addition, the worm 115b, the eccentric rotating part 111b and the bevel gear 116b have small volume and occupy small space in the shell, so that the overall structure space is more compact.

[0202] Particularly, eccentric rotating member 111b is integrally formed with helical gear 116b, eccentric rotating member 111b and helical gear 116b rotate coaxially around rotating shaft 118b, so that helical gear 116b can directly transmit driving force to driving link 110b, increase compactness inside the device, reduce the number of mechanism settings, avoid friction between mechanisms, and reduce noise emission.

[0203] Embodiment four:

[0204] Referring to FIGS. 36-37, the fourth embodiment of the present application discloses a radial piston pump head 100, which is different from the first embodiment in that it comprises a helical gear set 117c, which comprises at least two helical gears, and any two helical gears are connected with each other in meshing or coaxial connection.

[0205] Specifically, the helical gear set 117c is connected with the external driving device and the eccentric rotating member 111c respectively, the helical gears are connected in meshing or coaxial transmission, the eccentric rotating member 111c is connected with the driving link 110c, so that the external driving device directly drives the eccentric rotating member 111c to rotate, and drives the driving link 110c to move the moving piston in the piston sleeve to reciprocate, changes the space in the piston sleeve, and increases the liquid pressure pumped by the piston cylinder mechanism. In addition, the helical gear set 117c is coaxially transmitted by helical gears with different outer diameters, and then drives the eccentric rotating member 111c to rotate by different gears, realizes a two-stage speed reduction mechanism, increases the stability when bearing weight, and reduces the noise emitted by the device.

[0206] Embodiment five:

[0207] Referring to FIGS. 38-39, the fifth embodiment of the present application discloses a radial piston pump head 100, which is different from the first embodiment in that it comprises a helical gear set 117d, a resonant cam 119d, a rotating shaft 118d, a bearing 113d, and a planetary gear 114d. The helical gear set 117d is connected with the external driving device and the resonant cam 119d respectively, the bearing 113d is connected with the resonant cam 119d and the planetary gear 114d respectively, the rotating shaft 118d is connected with the resonant cam 119d, and the resonant cam 119d rotates around the rotating shaft 118d as the center axis,

[0208] Specifically, the resonance cam 119d is provided with a bevel gear 1191d and a cam 1192d, the bearing 113d is sleeved with the cam 1192d, the planetary gear 114d is connected with the bearing 113d in a clamping manner, the driving shaft 1141d is arranged on the planetary gear 114d, and the driving shaft 1141d is connected with the sleeve ring part 1101d of the driving connecting rod 110d. The rotating shaft 118d is inscribed in the cam 1192d, the cam 1192d is inscribed in the bevel gear 1191d of the resonance cam 119d, the resonance cam 119d rotates to drive the planetary gear 114d to rotate, so that the driving connecting rod 110d is sequentially close to and away from the piston cylinder mechanism, and the reciprocating motion is sequentially completed.

[0209] The bevel gear set 117d is provided with at least two bevel gears which are connected through meshing connection or coaxial connection or the like. In the embodiment, two bevel gears are adopted, which are a first bevel gear and a second bevel gear. The first bevel gear is coaxially connected with the second bevel gear, wherein the first bevel gear is connected with the bevel gear 1191d of the resonance cam 119d in a meshing manner, and the second bevel gear is connected with an external driving device. An output shaft of the external driving device is provided with a driving bevel gear which is connected with the second bevel gear in a meshing manner. The bevel gears 1191 of the bevel gear set 117d, the resonance cam 119d and the driving bevel gear are matched, the connection between the mechanisms is more stable, the friction loss in the movement process of the mechanism is reduced, and the service life of the mechanism inside the pump head is prolonged. In addition, the internal noise can also be reduced.

[0210] Embodiment six:

[0211] Referring to FIGS. 40-41, the sixth embodiment of the present application discloses a radial piston pump 200, which comprises the radial piston pump head 100 and the driving mechanism 3 disclosed in the above embodiments. The driving mechanism 3 is connected with the radial piston pump head 100, and any one of the piston cylinder mechanisms 2 is arranged vertically with the driving mechanism 3.

[0212] The driving mechanism 3 comprises a driving part 31 and a speed reducer 32. The driving part 31 is connected with the speed reducer 32, and the speed reducer 32 is connected with the transmission assembly 11. The driving part 31 adopts a high-speed motor. Since the high-speed motor provides small torque, the speed reducer 32 needs to be installed between the driving part 31 and the pump head. The speed reducer 32 can convert the high speed of the driving part 31 into large torque, so as to drive the plurality of piston cylinder mechanisms 2 in the pump head. Through the cooperation of the driving part 31 and the speed reducer 32, the driving mechanism 3 can output large torque to drive the pump head, so that the piston cylinder mechanisms 2 inside the pump body can obtain better driving force, and the service life of the driving mechanism 3 and other mechanisms of the pump body can be prolonged. In addition, the internal structure is compact, the volume of the whole pump body can be reduced, and the purpose of small volume is achieved.

[0213] It can be understood that the driving mechanism 3 drives the plurality of piston cylinder mechanisms 2 to reciprocate, and through the plurality of cylinder body settings, the same flow liquid pressure is uniformly dispersed to each piston cylinder mechanism 2, so that the pump body can output high-pressure and large-flow liquid, and the effect of liquid pressure on the pump body is reduced, so that the service life of the pump body is prolonged.

[0214] Further, through the driving of the driving link 110 of the driving mechanism 3, the piston and the plunger are directly driven to reciprocate, and the gear setting is omitted, and through the plurality of piston cylinder settings, the compression cylinder movements of each piston cylinder are sequentially performed, the pressure received in each cylinder is more stable and uniform, and the pressure in each cylinder can be distributed, thereby reducing the pressure received by each cylinder and prolonging the service life of the cylinder. In addition, a single driving mechanism 3 drives a plurality of piston cylinder mechanisms 2 to operate, and under the same liquid flow output, the overall input energy consumption is reduced.

[0215] As an embodiment, the driving mechanism 3 includes a driving fastener 33, the driving fastener 33 passes through the upper cover 12 and the upper shell 14 to connect the speed reducer 32. Specifically, the upper cover 12 and the upper shell 14 are provided with fastener through holes 126 around the through hole 146, the driving fastener 33 adopts a fastening screw, the outer diameter of the nut of the fastening screw is larger than that of the screw rod, and the driving fastener 33 is inserted into the fastener through hole 126 from the water inlet groove 1221 to connect the speed reducer 32, so that the speed reducer 32 and the driving piece 31 are fixed on the upper cover 12.

[0216] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0217] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0218] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "plurality" is two or more, unless otherwise specifically limited.

[0219] In the present application, unless specifically defined otherwise, the terms "mounting", "connected", "connecting", "fixed", "fixedly connected" and the like are to be construed in a broad sense, for example, they can be connected, or detachably connected, or integrated; they can be mechanical connection, or electrical connection; they can be directly connected, or indirectly connected through an intermediate medium; they can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0220] In the present application, unless specifically defined otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0221] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0222] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, any modifications and variations of the present application, which are within the scope of the claims of the present application and their equivalent technologies, are intended to be included in the present application.

[0223] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements are intended to be included in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A radial piston pump head, characterized in that The utility model relates to a kind of water pump, including, At least two piston cylinder mechanisms; Shell, including transmission assembly, upper cover, lower cover, upper shell and lower shell, the upper shell is connected with the lower shell, and an accommodation space is formed inside, the piston cylinder mechanism is installed in the accommodation space in a rotationally symmetric manner, the transmission assembly is arranged in the accommodation space, and the transmission assembly is connected with the piston cylinder mechanism; The upper cover is connected with the upper shell, and the lower cover is connected with the lower shell, the upper cover is communicated with the water inlet of all the piston cylinder mechanisms, and the lower cover is communicated with the water outlet of all the piston cylinder mechanisms.

2. The radial piston pump head of claim 1, wherein, The transmission assembly includes a bearing, a planetary gear and a resonant cam, the bearing is connected with the resonant cam, and the planetary gear is connected with the bearing. The planetary gear is provided with a drive shaft, and the number of the drive shaft is matched with the number of the piston cylinder mechanisms.

3. The radial piston pump head of claim 1, wherein, The transmission assembly includes a worm, a helical gear and an eccentric rotating member, the worm is connected with the helical gear, and the eccentric rotating member is connected with the helical gear.

4. The radial piston pump head of claim 1, wherein, The utility model includes a helical gear set, the helical gear set includes at least two helical gears, and any two helical gears are connected with each other or coaxially connected.

5. The radial piston pump head of claim 1, wherein, The transmission assembly includes an eccentric rotating member, the eccentric rotating member is arranged in the accommodation space, and the eccentric rotating member drives the piston cylinder mechanism.

6. The radial piston pump head of claim 5, wherein, The eccentric rotating member includes a connecting sleeve and an eccentric output rod, one end of the connecting sleeve is fixedly connected with the eccentric output rod, and the other end is provided with a special-shaped opening; The outer diameter of the eccentric output rod is smaller than the outer diameter of the connecting sleeve, and the circumferential side surface of the eccentric output rod is inscribed in the circumferential side surface of the connecting sleeve.

7. The radial piston pump head of claim 6, wherein, The upper shell and the upper cover are provided with through holes at the center positions, and the shapes of the through holes are matched. The special-shaped opening is directed to the direction of the through hole.

8. The radial piston pump head of claim 6, wherein, The transmission assembly includes a bearing, a planetary gear and a resonant cam, the bearing is connected with the resonant cam, and the planetary gear is connected with the bearing.

9. The radial piston pump head of claim 8, wherein, The lower shell is provided with a rotating groove and a protruding shaft, the protruding shaft is arranged at the center position of the rotating groove, and all the piston cylinder mechanisms are rotationally symmetric about the central axis of the protruding shaft. The rotating groove and the eccentric rotating member are coaxially arranged, and the rotating groove and the eccentric rotating member can rotate about the central axis of the protruding shaft.

10. The radial piston pump head of claim 8, wherein, The transmission assembly includes a drive link, and the number of the drive link is corresponding to the number of the piston cylinder mechanisms. The drive link includes a sleeve part, a connecting handle part and a spherical part, which are sequentially connected and integrally formed. The sleeve part is sleeved with the eccentric output rod, the spherical part is inserted into the piston cylinder mechanism, and the connecting handle part is provided in a straight bar shape or a curved shape.

11. The radial piston pump head of claim 10, wherein, All the drive links are sequentially arranged between the connecting sleeve and the bearing.

12. The radial piston pump head of claim 1, wherein, The upper cover includes a water inlet pipe and a water inlet coupling, and the water inlet pipe is fixedly connected with the water inlet coupling. The water inlet coupling is mounted on the water inlet assembly.

13. The radial piston pump head of claim 12, wherein, The upper shell includes a water inlet sealing strip, a shunt cavity is formed between the water inlet coupling and the upper shell, and the water inlet sealing strip is arranged on the inner wall of the shunt cavity.

14. The radial piston pump head of claim 13, wherein, The water inlet connector is provided with a water inlet groove and a water inlet hole, the water inlet groove is arranged on the side close to the water inlet assembly, and the water inlet hole penetrates the body of the water inlet connector.

15. The radial piston pump head of claim 13, wherein, The surface of the upper shell towards the water inlet connector is provided with a first water groove, and the shape of the first water groove matches the shape of the water inlet groove. A plurality of water inlet holes are arranged in the first water groove, one water inlet hole corresponds to the water inlet of one piston cylinder mechanism, and the position of the water inlet hole corresponds to the position of the piston cylinder mechanism.

16. The radial piston pump head of claim 15, wherein, The upper shell includes a plurality of water inlet channels, and the water inlet channels communicate with the water inlet holes. One water inlet channel corresponds to one water inlet hole.

17. The radial piston pump head of claim 12, wherein, The upper shell is provided with a first mounting groove, the shape of the first mounting groove matches the shape of the water inlet connector, the thickness of the water inlet connector matches the depth of the first mounting groove, and the water inlet connector is mounted in the first mounting groove.

18. The radial piston pump head of claim 1, wherein, The lower cover includes a water outlet pipe and a water outlet connector, and the water outlet pipe is fixedly connected with the water outlet connector.

19. The radial piston pump head of claim 1, wherein, The water outlet connector is provided with a sealing strip groove, a water outlet groove and a water outlet hole, and the sealing strip groove surrounds the water outlet groove. The water outlet groove and the sealing strip groove are arranged on the side close to the lower shell, and the water outlet hole is arranged in the range of the water outlet groove. The lower shell includes a water outlet sealing strip. The surface of the lower shell towards the water outlet connector is provided with a second water groove, and the shape of the second water groove matches the shape of the water outlet groove.

20. The radial piston pump head of claim 1, wherein, The lower shell is provided with a water channel and a liquid outlet hole, and the liquid outlet hole is arranged at one end of the water channel close to the lower cover. One water channel corresponds to one piston cylinder mechanism.

21. The radial piston pump head of claim 1, wherein, The lower cover is provided with an insertion pipe, and the upper cover, the upper shell and the lower shell are all provided with connecting holes. The upper cover includes a connecting fastener, and the connecting fastener penetrates the connecting holes. The connecting fastener penetrates the upper shell and the lower shell to connect the insertion pipe.

22. The radial piston pump head of claim 1, wherein, The piston cylinder mechanism includes a water inlet piston assembly, a water outlet piston assembly and a piston cylinder body. The water inlet piston assembly and the water outlet piston assembly are arranged in the piston cylinder body respectively, and the water inlet piston assembly is connected with the transmission assembly.

23. The radial piston pump head of claim 22, wherein, The piston cylinder body includes a sealing ring. The sealing ring is arranged at the water inlet port and the water outlet port of the cylinder body.

24. The radial piston pump head of claim 22, wherein, The piston cylinder mechanism includes a water inlet plug assembly, and the water inlet plug assembly is arranged in the water inlet channel of the upper shell.

25. The radial piston pump head of claim 22, wherein, The water inlet plug assembly includes a water inlet plug and a first elastic member, the water inlet plug is connected with the first elastic member, and the water inlet plug is arranged in the water inlet channel. The first elastic member abuts the water inlet plug at one end of the water inlet channel close to the water inlet hole.

26. The radial piston pump head of claim 22, wherein, The piston cylinder body is internally provided with a liquid channel. The liquid channel includes a water inlet channel, a connecting channel and a water outlet channel, and the connecting channel connects the water inlet channel and the water outlet channel respectively. The cylinder water inlet is communicated with the water inlet channel and the connecting channel.

27. The radial piston pump head of claim 26, wherein, The cylinder water outlet is arranged close to the connecting position of the water outlet channel and the connecting channel.

28. The radial piston pump head of claim 26, wherein, The water inlet piston assembly is installed in the water inlet channel. The water inlet piston assembly comprises a piston sleeve, a piston connecting piece and a moving piston.

29. The radial piston pump head of claim 26, wherein, The moving piston is connected with the piston sleeve by interference fit.

30. The radial piston pump head of claim 29, wherein, The water outlet piston assembly comprises a water outlet plug and a second elastic piece.

31. The radial piston pump head of claim 26, wherein, The water outlet plug comprises a water outlet plug part and a water outlet sleeve part. The water outlet plug part and the water outlet sleeve part are integrally formed.

32. The radial piston pump head of claim 31, wherein, The piston cylinder mechanism comprises a sealing assembly.

33. A radial piston pump characterized by, The sealing assembly comprises a sealing head and a sealing plug.

34. The radial piston pump of claim 33, wherein, The sealing head is arranged on the opening of the connecting channel on the surface of the piston cylinder.

35. The radial piston pump of claim 34, wherein, The sealing plug is connected with the water outlet channel by interference fit. The water outlet piston assembly is arranged in the water outlet channel. One end of the water outlet piston assembly abuts against the connecting position of the water outlet channel and the connecting channel. The other end of the water outlet piston assembly abuts against the sealing plug. The radial piston pump head according to any one of claims 1-32. The radial piston pump head comprises a driving piece and a speed reducer. The driving piece is connected with the speed reducer. The speed reducer is connected with the transmission assembly. The driving fastener is connected with the speed reducer through the upper cover.

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