Five-plunger pump and high-pressure cleaning machine

Abstract

The utility model discloses a five-plunger pump and a high-pressure cleaning machine. The five-plunger pump comprises an oil cylinder assembly, a plunger assembly, a pump body assembly and a pump cover assembly which are sequentially arranged. Five plunger mechanisms are arranged on the plunger assembly, and one end of each plunger mechanism movably extends into the pump body assembly; the pump body assembly comprises a pump main body, five water inlet cavities and five water outlet cavities are formed in the pump main body at equal intervals, and the five water outlet cavities are communicated with the corresponding water inlet cavities. The water inlet one-way valve mechanisms and the water outlet one-way valve mechanisms are respectively arranged in the five water inlet cavities and the five water outlet cavities; and the water outlet cover body is arranged on the pump main body in a sealing and communicating manner and is communicated and connected with the five water outlet cavities. According to the plunger pump, the five water outlet cavities are formed in the inner sides of the five water inlet cavities and are arranged on the same side face, and then the one-way valve mechanisms are arranged in the water inlet cavities and the water outlet cavities respectively, so that the problems that an existing plunger pump is not compact enough in structure and common in cleaning capacity are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, and in particular to a five-plunger pump and a high-pressure cleaner. Background Technology

[0002] Plunger pumps are the most commonly used pumps in high-pressure washers. Driven by a power unit, the plunger pump pressurizes water from its normal pressure and outputs it to efficiently clean floors, vehicles, and other items. Due to limitations in product size, weight, structure, and cost, current high-pressure washers generally use three-plunger pumps. These pumps result in significant flow pulsation and less stable cleaning. For plunger pumps, the number of plungers, the arrangement of internal flow channels, and the structural design of the flow channels all have a crucial impact on the magnitude of flow pulsation, pressure stability, and manufacturing cost of the high-pressure washer.

[0003] CN217270782U discloses a plunger pump for a high-pressure washer, including a cylinder and a housing. The front end of the cylinder has an inlet and an outlet, with the outlet located above the inlet. The rear end of the cylinder is connected to the housing and has plunger chambers arranged laterally. The lower end of the plunger chambers has a transverse inlet channel that communicates with the inlet. The upper end of the plunger chambers has a transverse outlet channel that communicates with the outlet. A check valve is installed in the outlet. A pressure regulating chamber is located on the cylinder above the outlet and communicates with the outlet. A pressure regulating valve is installed in the pressure regulating chamber. An overflow channel communicating with the inlet is located on the lower side of the pressure regulating chamber. A push rod chamber is located at the rear end of the cylinder and is located behind the outlet. The opening of the push rod chamber faces outward from the circumference of the cylinder. While this technical solution simplifies the setup of the return flow channel and connecting flow channel, and improves the operating space and convenience of installation, it occupies a large space and has limited cleaning capacity. Therefore, a five-plunger pump and a high-pressure cleaner are provided to solve the above problems. Utility Model Content

[0004] One of the objectives of this invention is to provide a five-plunger pump and a high-pressure cleaner, so as to solve the problems that the existing plunger pumps are not compact enough and have limited cleaning capabilities.

[0005] This utility model, a five-plunger pump and a high-pressure cleaner, can be achieved through the following technical solutions:

[0006] This utility model discloses a five-plunger pump applied to a high-pressure washer, comprising a hydraulic cylinder assembly as the transmission body; a plunger assembly including a pump body base fixedly disposed on one side of the hydraulic cylinder assembly, five plunger mechanisms movably penetrating the pump body base and respectively drivingly connected to the hydraulic cylinder assembly; a pump body assembly disposed on the side of the plunger assembly, one end of each of the five plunger mechanisms movably extending into the pump body assembly, the hydraulic cylinder assembly driving each of the five plunger mechanisms to reciprocate within the pump body assembly; and a pump cover assembly sealed and connected to the pump body assembly, the pump cover assembly having an inlet channel and an outlet channel.

[0007] The pump assembly includes a pump body disposed on the side of the pump body base body; five inlet chambers are equidistantly arranged on the outer ring of the pump body, one end of each of the five plunger bodies is movably disposed in the corresponding inlet chamber; five outlet chambers are equidistantly arranged on the inner ring of the pump body, and the five outlet chambers are respectively connected to the corresponding inlet chambers; five inlet check valve mechanisms and five outlet check valve mechanisms are respectively disposed in the corresponding inlet chambers and outlet chambers; and an outlet cover is sealed and connected to the pump body and communicates with the five outlet chambers.

[0008] In one embodiment, the five water inlet chambers are respectively connected to the corresponding water outlet chambers through connecting holes.

[0009] In one embodiment, a water outlet head is provided on the side of the water outlet cover opposite to the pump cover assembly, and the water outlet head is connected to the pump cover assembly.

[0010] In one embodiment, the cylinder assembly includes a cylinder body, which is a hollow cavity; a drive shaft that is movably disposed through the cylinder body; a drive gear disposed on the outside of the cylinder body and fixedly disposed on the drive shaft; and a swashplate pushing mechanism that is movably disposed in the cylinder body and fixedly disposed on the drive shaft, the swashplate pushing mechanism being in contact and driving connection with the five plunger mechanisms.

[0011] In one embodiment, the plunger mechanism includes a plunger body that extends through the pump body seat body, one end of the plunger body being able to contact and drive the swashplate pushing mechanism, and the other end extending into the pump body assembly; and an elastic member disposed between the inner sides of the plunger body and the pump body seat body.

[0012] In one embodiment, a first oil seal is provided at the connection between the drive shaft and the cylinder body; multiple bearings are rotatably mounted on the drive shaft.

[0013] In one embodiment, a first seal is provided at the connection between the pump body base and the cylinder body.

[0014] In one embodiment, five plunger cavities are provided through the pump body base, and the five plunger cavities are distributed in a regular pentagonal pattern; a second oil seal and a water seal are respectively provided on opposite sides of the plunger cavities, and the plunger mechanism moves through the second oil seal, the pump body base, and the water seal in sequence.

[0015] In one embodiment, the pump cover assembly includes a pump cover body, which is sealed and connected to the side of the pump body. The water inlet channel and the water outlet channel are respectively disposed on the pump cover body. A first water inlet pipe and a second water inlet pipe are integrally formed and connected to the pump cover body, which are vertically connected and respectively connected to the water inlet channel. A water outlet pipe is connected to the pump cover body and is on the same straight line as the first water inlet pipe. It is connected to the water outlet channel, and an overflow valve is provided in the water outlet pipe.

[0016] This utility model discloses a high-pressure cleaner comprising the five-plunger pump described in any of the above-mentioned claims.

[0017] Compared with the prior art, the beneficial effects of this utility model of a five-plunger pump and a high-pressure cleaner are as follows:

[0018] This utility model discloses a five-plunger pump and a high-pressure washer. By arranging five water outlet chambers and five water inlet chambers on the same side, and placing the five water outlet chambers inside the five water inlet chambers, the pump assembly occupies less space, effectively solving the problem of insufficient compactness in existing plunger pump structures. By incorporating one-way valve mechanisms in each of the five water inlet and five water outlet chambers, the liquid in the inlet and outlet chambers can only move in one direction, increasing the water pressure and thus improving the cleaning effect to a certain extent, effectively addressing the issue of limited cleaning capacity in existing plunger pump structures. Furthermore, by setting two mutually perpendicular water inlet pipes, users can select the appropriate inlet pipe according to their actual needs, thereby improving the user experience. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a five-plunger pump according to the present invention;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of a five-plunger pump according to this utility model;

[0022] Figure 3 This is an exploded structural diagram of a five-plunger pump according to the present invention, including a cylinder assembly, a plunger assembly, a pump body assembly, and a pump cover assembly;

[0023] Figure 4 yes Figure 3 The exploded structural diagram of the hydraulic cylinder assembly shown;

[0024] Figure 5 yes Figure 3 A schematic diagram of the exploded structure of the plunger assembly shown.

[0025] Figure 6 yes Figure 3 The exploded structural diagram of the pump assembly shown includes the pump body.

[0026] Figure 7 yes Figure 6 A three-dimensional structural schematic diagram of the pump body shown;

[0027] Figure 8 yes Figure 3 The diagram shows a three-dimensional structure of the pump cover assembly.

[0028] The diagram indicates: 10, five-plunger pump; 11, cylinder assembly; 111, cylinder body; 1111, fixing hole; 112, drive shaft; 1121, first oil seal; 1122, bearing; 113, drive gear; 114, swashplate push mechanism; 12, plunger assembly; 121, pump body seat; 1211, plunger cavity; 1212, through hole; 1213, fixing hole; 122, plunger mechanism; 1221, plunger body; 1222, elastic element; 123, first fastening screw; 124, first seal; 1 3. Pump body assembly; 131. Pump body; 1311. Inlet chamber; 1312. Outlet chamber; 1313. Connecting hole; 1314. Spacing; 132. Inlet check valve mechanism; 133. Outlet check valve mechanism; 134. Outlet cover; 1341. Outlet head; 1342. Second seal; 1343. Third seal; 14. Pump cover assembly; 141. Pump cover body; 1411. Inlet channel; 1412. Outlet channel; 142. First inlet pipe; 143. Second inlet pipe; 144. Outlet pipe. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0031] Please see Figures 1-3 As shown, the present invention discloses a five-plunger pump 10, which is mainly used in high-pressure cleaners. It includes a cylinder assembly 11, a plunger assembly 12, a pump body assembly 13, and a pump cover assembly 14. The cylinder assembly 11 is the transmission body, which is meshed and connected to the drive assembly. The plunger assembly 12 is installed on the cylinder assembly 11 and extends into the pump body assembly 13. The cylinder assembly 11 drives the plunger assembly 12 to reciprocate in the pump body assembly 13, thereby pressurizing and conveying the liquid entering the pump body assembly 13. The pump cover assembly 14 is sealed and connected to the pump body assembly 13, and water inlet and pressurized water outlet operations are performed through the pump cover assembly 14.

[0032] Please see Figures 1-4 As shown, in this embodiment, the cylinder assembly 11 includes a cylinder body 111, a drive shaft 112, a drive gear 113, and a swashplate pushing mechanism 114. The cylinder body 111 is a hollow cavity containing lubricating oil. The drive shaft 112 is movably and sealed within the cylinder body 11. The drive gear 113 is located on the outside of the cylinder body 111 and fixedly mounted on the drive shaft 112. It meshes with and is connected to the drive assembly, which drives the drive shaft 112 to rotate within the cylinder body 111 via the drive gear 113. The swashplate pushing mechanism 114 is movably mounted within the cylinder body 111 and fixedly mounted on the drive shaft 112. It rotates along with the drive shaft 112. The swashplate pushing mechanism 114 is in contact with and connected to the plunger assembly 12, thereby driving the plunger assembly 12 to reciprocate within the pump body assembly 13.

[0033] Please see Figure 4As shown, specifically, the outer side of the cylinder body 111 is provided with multiple fixing holes 1111 for fixing and installation operations; the connection between the drive shaft 112 and the cylinder body 111 is provided with a first oil seal 1121 to prevent lubricating oil in the cylinder body 111 from leaking out through the connection between the drive shaft 112 and the cylinder body 111; multiple bearings 1122 are rotatably provided on the drive shaft 112 to enable the drive shaft 112 to rotate relative to the cylinder body 111.

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in this embodiment, the plunger assembly 12 includes a pump body seat 121 and five plunger mechanisms 122. The pump body seat 121 is fixedly mounted on one side of the cylinder body 111 by multiple first fastening screws 123. The five plunger mechanisms 122 respectively movably penetrate the pump body seat 121. One end of the plunger mechanism 122 can be contacted and driven by the swashplate pushing mechanism 114, and the other end can be movably extended into the pump assembly 13. The swashplate pushing mechanism 114 drives the plunger mechanism 122 to reciprocate in the pump assembly 13, thereby pressurizing and conveying the liquid entering the pump assembly 13. In order to enhance the sealing performance of the connection between the pump body seat 121 and the cylinder body 112, a first sealing element 124 is provided on the connection between the pump body seat 121 and the cylinder body 112.

[0035] Please see Figure 5As shown, specifically, five plunger cavities 1211 and multiple through holes 1212 are respectively provided on the pump body base 121; the five plunger cavities 1211 are distributed in a regular pentagonal pattern, and a second oil seal (not shown) and a water seal (not shown) are respectively provided on opposite sides of the plunger cavities 1211. The plunger mechanism 122 moves sequentially through the second oil seal (not shown), the pump body base 121 and the water seal (not shown), and prevents the lubricating oil in the cylinder body 111 from passing through the plunger through the second oil seal (not shown). The plug cavity 1211 seeps into the pump body assembly 13, and the water seal (not shown) prevents the liquid in the pump body assembly 13 from seeping into the cylinder body 111; multiple first fastening screws 123 pass through the corresponding through holes 1212 and are fastened to the cylinder body 111 with threaded connections; multiple fixing holes 1213 are also provided on the pump body base body 121, and the pump body assembly 13 and the pump cover assembly 14 are installed on one side of the pump body base body 121 in sequence through the multiple fixing holes 1213. Specifically, the plunger mechanism 122 includes a plunger body 1221 and an elastic element 1222. The plunger body 1221 passes through the pump body seat body 121 via the plunger cavity 1211. One end of the plunger body 1221 can be connected to the swashplate pushing mechanism 114 for transmission, and the other end extends into the pump body assembly 13. One end of the elastic element 1222 is connected to the plunger body 1221, and the other end is connected to the inner side of the pump body seat body 121. It provides a restoring force to the plunger body 1221, so that the plunger body 1221 returns to its initial position.

[0036] Please see Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, in this embodiment, the pump body assembly 13 includes a pump body 131, five inlet check valve mechanisms 132, five outlet check valve mechanisms 133, and an outlet cover 134. The pump body 131 is disposed on the side of the pump body base body 121, and five inlet chambers 1311 are equidistantly arranged on its outer ring. One end of each of the five plunger bodies 1221 is movably disposed in the corresponding inlet chamber 1311. Five outlet chambers 1312 are equidistantly arranged on the inner ring of the pump body 131, and the five outlet chambers 1312 are respectively connected to the corresponding inlet chambers 1311. The five inlet check valve mechanisms 132 are respectively disposed in the corresponding inlet chambers 1311. The five outlet check valve mechanisms 133 are respectively disposed in the corresponding outlet chambers 1312. The outlet cover 134 is sealed and connected to the pump body 131 and is connected to the five outlet chambers 1312. Specifically, the inlet check valve mechanism 132 and the outlet check valve mechanism 133 adopt existing technology, so their specific working process and structure will not be described in detail here, as long as they meet the requirements of this application.

[0037] Please see Figure 6 and Figure 7As shown, specifically, the five inlet chambers 1311 are respectively connected to the corresponding outlet chambers 1312 through the connecting holes 1313; a gap 1314 is provided between two adjacent inlet chambers 1311. This design helps to reduce the weight of the pump body 131 and also facilitates the fastening connection between the pump cover assembly 14 and the pump body base 121. Specifically, an outlet head 1341 is provided on the side of the outlet cover 134 opposite to the pump cover assembly 14, and is connected to the pump cover assembly 14 through the outlet head 1341; in order to enhance the sealing performance of the connection between the outlet cover 134 and the pump body 131 and the pump cover assembly 14, a second sealing element 1342 and a third sealing element 1343 are respectively provided at the connection between the outlet cover 134 and the pump body 131 and the pump cover assembly 14.

[0038] Please see Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, in this embodiment, the pump cover assembly 14 includes a pump cover body 141, a first inlet pipe 142, a second inlet pipe 143, and an outlet pipe 144. The pump cover body 141 is sealed and connected to the side of the pump body 131. The first inlet pipe 142 and the second inlet pipe 143 are integrally formed and connected to the pump cover body 141, and the two are vertically connected. The user can choose the first inlet pipe 142 or the second inlet pipe 143 for water intake operation according to actual needs. The outlet pipe 144 is connected to the pump cover body 141 and is on the same straight line as the first inlet pipe 142. Specifically, the pump cover body 141 is provided with an inlet channel 1411 and an outlet channel 1412. One end of the inlet channel 1411 is connected to the first inlet pipe 142 and the second inlet pipe 143, and the other end is connected to the five inlet chambers 1311. One end of the outlet channel 1412 is connected to the outlet head 1341, and the other end is connected to the outlet pipe 144. Preferably, an overflow valve (not shown) is provided in the outlet pipe 144 to adjust the water pressure.

[0039] This utility model discloses a high-pressure cleaner comprising the five-plunger pump 10 described above.

[0040] It should be noted that the specific working process of the five-plunger pump and high-pressure cleaner of this utility model is as follows: the user selects the first inlet pipe 142 or the second inlet pipe 143 as the water inlet according to actual needs, and then blocks the other inlet pipe; the drive assembly drives the transmission gear 113 to rotate, thereby driving the transmission shaft 112 and the swashplate push mechanism 114 to rotate in sequence. The swashplate push mechanism 114 drives the five plunger mechanisms 122 to reciprocate in the corresponding water inlet chambers 1311, thereby pressurizing and transporting the liquid entering the first inlet pipe 142 or the second inlet pipe 143 through the water inlet channel 1411, the water inlet chamber 1311, the water outlet chamber 1312, the water outlet head 1341, and the water outlet channel 1412 to the water outlet pipe 144 for spraying, thereby completing the high-pressure cleaning operation.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A five-plunger pump, used in a high-pressure washer, characterized in that, include: The hydraulic cylinder assembly serves as the main transmission component; A plunger assembly includes a pump body seat body, which is fixedly mounted on one side of the cylinder assembly, and five plunger mechanisms that movably pass through the pump body seat body and are respectively drivenly connected to the cylinder assembly. A pump body assembly is disposed on the side of the plunger assembly, and one end of each of the five plunger mechanisms extends movably into the pump body assembly. The hydraulic cylinder assembly drives the five plunger mechanisms to reciprocate within the pump body assembly. A pump cover assembly is sealed and connected to the pump body assembly, and the pump cover assembly is provided with an inlet channel and an outlet channel. The pump assembly includes a pump body disposed on the side of the pump body base body; five inlet chambers are equidistantly arranged on the outer ring of the pump body, one end of each of the five plunger bodies is movably disposed in the corresponding inlet chamber; five outlet chambers are equidistantly arranged on the inner ring of the pump body, and the five outlet chambers are respectively connected to the corresponding inlet chambers; five inlet check valve mechanisms and five outlet check valve mechanisms are respectively disposed in the corresponding inlet chambers and outlet chambers; and an outlet cover is sealed and connected to the pump body and communicates with the five outlet chambers.

2. A five-plunger pump according to claim 1, characterized in that, The five water inlet chambers are respectively connected to the corresponding water outlet chambers through connecting holes.

3. A five-plunger pump according to claim 1, characterized in that, A water outlet head is provided on the side of the water outlet cover opposite to the pump cover assembly, and the water outlet head is connected to the pump cover assembly.

4. A five-plunger pump according to claim 1, characterized in that, The cylinder assembly includes a cylinder body, which is a hollow cavity; a drive shaft that is movably disposed through the cylinder body; a drive gear disposed on the outside of the cylinder body and fixedly disposed on the drive shaft; and a swashplate pushing mechanism that is movably disposed in the cylinder body and fixedly disposed on the drive shaft, the swashplate pushing mechanism being in contact and driving connection with the five plunger mechanisms.

5. A five-plunger pump according to claim 4, characterized in that, The plunger mechanism includes a plunger body that extends through the pump body seat body. One end of the plunger body can be connected to the swashplate push mechanism for transmission, and the other end extends into the pump body assembly. An elastic member is disposed between the inner sides of the plunger body and the pump body seat body.

6. A five-plunger pump according to claim 4, characterized in that, A first oil seal is provided at the connection between the drive shaft and the cylinder body; multiple bearings are rotatably mounted on the drive shaft.

7. A five-plunger pump according to claim 4, characterized in that, A first sealing element is provided at the connection between the pump body base and the cylinder body.

8. A five-plunger pump according to claim 1, characterized in that, Five plunger cavities are provided through the main body of the pump body, and the five plunger cavities are distributed in a regular pentagonal pattern. A second oil seal and a water seal are respectively provided on opposite sides of the plunger cavities. The plunger mechanism moves through the second oil seal, the main body of the pump body, and the water seal in sequence.

9. A five-plunger pump according to claim 1, characterized in that, The pump cover assembly includes a pump cover body, which is sealed and connected to the side of the pump body. The water inlet channel and the water outlet channel are respectively provided on the pump cover body. A first water inlet pipe and a second water inlet pipe are integrally formed and connected to the pump cover body, which are vertically connected and respectively connected to the water inlet channel. A water outlet pipe is connected to the pump cover body and is on the same straight line as the first water inlet pipe. It is connected to the water outlet channel and is provided with an overflow valve in the water outlet pipe.

10. A high-pressure cleaner, characterized in that, Includes the five-plunger pump as described in any one of claims 1-9.

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