Radial vertical confluence piston pump

Abstract

The invention relates to a radial vertical confluence piston pump which comprises a pump base, a liquid inlet cavity, a liquid outlet cavity and a plurality of piston channels are arranged, the liquid inlet cavity and the liquid outlet cavity are located at the same end of the pump base, and the liquid inlet cavity and the liquid outlet cavity are not provided with a leap-type communication structure formed by mutual avoidance. The piston channel is communicated with the liquid inlet cavity and the liquid outlet cavity; the liquid inlet one-way valve is arranged at the communication part of the piston channel and the liquid inlet cavity; the liquid outlet one-way valve is arranged at the communication part of the piston channel and the liquid outlet cavity; one end of the piston rod is hermetically and slidably arranged in the piston channel, and the other end is positioned on one side, away from the liquid inlet cavity and the liquid outlet cavity, of the piston channel; the piston driving assembly is connected with the ends, located outside the piston channels, of the piston rods and used for driving the multiple piston rods to do asynchronous reciprocating linear motion. The pump has the advantages of being high in water pumping precision, long in service life, simple in confluence, simple in structure, easy to assemble and small in size.

Description

Technical Field

[0001] The present application relates to the field of pumps, and in particular to a radial vertical converging piston pump. Background Art

[0002] A pump is a machine that transports fluids or pressurizes fluids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. Pumps are mainly used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids.

[0003] In the related technology, such as publication number CN209261779U, the double-head diaphragm pump works on the reciprocating motion of an elastic diaphragm, and achieves the suction and discharge of liquid by alternately applying positive and negative pressures. However, during long-term operation, the diaphragm will be repeatedly bent and ruptured. At the same time, the deformation of the diaphragm is random, which makes it difficult to control the pumping accuracy of the water pump.

[0004] For example, publication number CN1233929C discloses an axial distribution radial piston pump, whose working principle is that during the rotation of the rotor, the plunger extends outward under the action of low-pressure oil or centrifugal force and is pressed against the inner wall of the stator. The closed working volume gradually increases, generating a local vacuum, and sucking oil from the hydraulic oil tank through the oil suction chamber on the distribution shaft. When the plunger rotates to another half circle, it is pushed inward by the inner surface of the stator, and the closed working volume gradually decreases, discharging the high-pressure oil through the oil pressure chamber of the distribution shaft. The disadvantage of this structure is that during the rotation of the plunger, there is sliding friction between the plunger and the stator, and due to the action of the oil pressure, the sliding friction is large, so the service life will be shortened. In addition, a dynamic sealing ring is needed at the confluence to separate the oil suction and oil discharge. The dynamic sealing ring must not only prevent leakage but also be friction-resistant, so the working requirements of the dynamic sealing ring are very high and it is also prone to failure, so its service life will be shortened.

[0005] For example, publication number CN101457747A, a vertical single-eccentric radially uniformly distributed multi-joint reciprocating pump, works on the principle that the central eccentric wheel will separate different plungers or pistons to slide close to or away from the center of the eccentric wheel during rotation to achieve suction and discharge. The disadvantage of this structure is that each plunger or piston corresponds to a liquid inlet channel and a liquid outlet channel, and an additional confluence module is required to connect multiple liquid inlet channels and multiple liquid outlet channels in series respectively, and the series structure between multiple liquid inlet channels and multiple liquid outlet channels needs to rely on different heights to complete the avoidance in spatial position, which makes the confluence of the pump cumbersome, the structure cumbersome, the assembly cumbersome and the volume bulky. Summary of the invention

[0006] In order to achieve high water pumping accuracy, long service life, simple confluence, simple structure, simple assembly and small size of the pump, the present application provides a radial vertical confluence piston pump.

[0007] The radial vertical converging piston pump provided in this application adopts the following technical solution: A radial vertical converging piston pump, comprising: A pump seat is provided with a liquid inlet cavity, a liquid outlet cavity and a plurality of piston channels, wherein the liquid inlet cavity and the liquid outlet cavity are located on the same end of the pump seat, the liquid inlet cavity and the liquid outlet cavity have no leaping connection structure formed by mutual avoidance, and the piston channel is connected with the liquid inlet cavity and the liquid outlet cavity; A liquid inlet one-way valve, arranged at the connection point between the piston channel and the liquid inlet chamber; A liquid outlet one-way valve, arranged at the connection point between the piston channel and the liquid outlet chamber; A piston rod, one end of which is sealingly and slidably disposed in the piston channel, and the other end of which is located on a side of the piston channel away from the liquid inlet chamber and the liquid outlet chamber; A piston drive assembly is connected to one end of the piston rod outside the piston channel and is used to drive the multiple piston rods to perform asynchronous reciprocating linear motion.

[0008] By adopting the above technical scheme, firstly, the piston rod itself will not be deformed, and water pumping is achieved by the reciprocating motion of the piston rod, so the water pumping accuracy is high; secondly, the piston rod only has reciprocating motion, so the service life of the piston rod is relatively high, and the seal between the liquid inlet chamber and the liquid outlet chamber is only a simple static seal, so the service life of the pump is relatively high; thirdly, there is only one liquid inlet chamber and liquid outlet chamber, and at the same time, the liquid inlet chamber and the liquid outlet chamber do not have a leap-forward connecting structure formed to avoid each other, so the pump has simple flow confluence, simple structure, simple assembly and small size; fourthly, the piston drive assembly is connected to the end of the piston rod outside the piston channel, and the end of the piston rod outside the piston channel is also far away from the side where the liquid inlet chamber and the liquid outlet chamber are located, which can not only reduce the volume of the pump in the diameter direction, but also enable the piston drive assembly to be quickly assembled and disassembled from the other end of the pump seat, so that the pump can be assembled more simply and the volume can be smaller.

[0009] Preferably, the liquid inlet cavity is annular, and the liquid outlet cavity is located inside the liquid inlet cavity.

[0010] By adopting the above technical solution, compared with the method in which the liquid inlet chamber and the liquid outlet chamber are arranged adjacent to each other on the left and right, this design method, firstly, the volume of the pump seat can be reduced when the volume of the liquid inlet chamber and the liquid outlet chamber remains unchanged; secondly, the piston channels can be evenly distributed around the circumference of the center line of the pump seat, so that the mutual interference between the piston channels can be smaller, making the movement of water in the pump more stable, and the wall thickness between the piston channels can be larger, thereby reducing the difficulty of manufacturing the pump seat.

[0011] Preferably, the pump seat is integrally formed with a connecting joint, and the connecting joint is connected to the liquid inlet cavity or the liquid outlet cavity.

[0012] By adopting the above technical solution, the pump can be more easily matched with the external pipeline, thereby improving the practicality of the pump.

[0013] Preferably, the liquid inlet one-way valve and the liquid outlet one-way valve are silicone umbrella valves, the liquid inlet one-way valve penetrates the connecting point between the liquid inlet chamber and the piston channel, the liquid outlet one-way valve is arranged in the liquid outlet chamber, and the liquid outlet one-way valve blocks the connecting point between the piston channel and the liquid outlet chamber in an undeformed state.

[0014] By adopting the above technical solution, firstly, the one-way valve selects a silicone umbrella valve, which can further make the pump structure simpler, easier to assemble and smaller in size; secondly, the special structure of the liquid outlet one-way valve utilizes the larger volume of the liquid outlet cavity, and makes the channel between the piston channel and the liquid outlet cavity smaller, so the volume of the pump can also be made smaller.

[0015] Preferably, the piston channel is extended along the diameter direction of the pump seat, and a connecting liquid channel is provided between the piston channel and the liquid inlet chamber and the liquid outlet chamber. The side of the connecting liquid channel close to the connecting joint is connected to the liquid inlet chamber and the liquid outlet chamber, and the side of the connecting liquid channel away from the connecting joint is connected to the piston channel. The connecting point between the connecting liquid channel and the piston channel is farther from the center of the pump seat than the connecting point between the connecting liquid channel and the liquid inlet chamber and the liquid outlet chamber.

[0016] By adopting the above technical solution, the liquid connecting channel and the piston channel extend in the radial direction, and the connecting point between the liquid connecting channel and the piston channel is located at the farthest position from the center of the pump seat, so the stroke of the piston rod can occupy a larger proportion of the length of the piston channel, thereby greatly reducing the axial size of the pump and slightly reducing the radial size of the pump, while also improving the water pumping efficiency.

[0017] Preferably, the flow area of ​​the liquid connecting channel on the side close to the liquid inlet chamber is larger than the flow area on the side close to the liquid outlet chamber.

[0018] By adopting the above technical solution, the size of the liquid connecting channel in the radial direction can be reduced while maintaining sufficient volume of the liquid connecting channel, thereby further reducing the volume of the pump.

[0019] Preferably, the pump seat has a connecting end cover, a valve bracket, a piston cylinder and a pump base in sequence along the axial direction, the connecting end cover is provided for the connection joint, and a liquid inlet storage tank and a liquid outlet storage tank are provided on the side of the connecting end cover away from the connection joint; the valve bracket is connected to the end face of the connecting end cover away from the connection joint, and the liquid inlet storage tank and the liquid outlet storage tank are also provided on the side of the valve bracket close to the connecting end cover, the two liquid inlet storage tanks are combined to form a liquid inlet cavity, the two liquid outlet storage tanks are combined to form a liquid outlet cavity, and the end face of the valve bracket away from the connecting end cover is provided for the liquid connecting channel; the piston cylinder is connected to the end face of the valve bracket away from the connecting end cover, one piston cylinder is provided for one piston channel, and a plurality of piston cylinders are arranged in a circular closed splicing around the axis of the pump seat; the pump base is connected to the end face of the piston cylinder away from the valve bracket, and the pump base is provided for the piston drive assembly.

[0020] By adopting the above technical solution, firstly, each individual component only needs to be processed by simple grooving or drilling, and can be spliced ​​in sequence along the axial direction during assembly, so the structure of the pump is simple and the assembly is simple; secondly, pumps with different numbers of piston rods can be made by simply replacing connecting end covers and valve brackets of different specifications and configuring different numbers of piston cylinders, thereby making it easier to manufacture pumps of different specifications.

[0021] Preferably, an axial step splicing portion is provided between the connecting end cover and the valve bracket and between the valve bracket and the piston cylinder, the axial step splicing portion is exposed on the circumferential side of the pump seat, the axial step splicing portion is in a structure in which a protrusion and a groove are embedded, and the axial step splicing portion is provided for bolts to pass through and fix; a circumferential step splicing portion is provided between the piston cylinders, the circumferential step splicing portion is exposed on the circumferential side of the pump seat, the circumferential step splicing portion is in a structure in which protrusions are embedded up and down, and the circumferential step splicing portion is provided for bolts to pass through and fix.

[0022] By adopting the above technical solution, the axial stepped splicing part can realize accurate splicing between the connecting end cover, the valve bracket and the piston cylinder, and the circumferential stepped splicing part can realize accurate splicing between multiple piston cylinders, thereby improving the sealing of the liquid inlet chamber, the liquid outlet chamber, the liquid connecting channel and the piston channel while achieving simple assembly.

[0023] Preferably, a chamber sealing ring is provided between the valve bracket and the connecting end cover, and the chamber sealing ring is divided into an outer sealing part, an inner sealing part and an intermediate connecting part, the outer sealing part is embedded outside the peripheral side of the liquid inlet chamber, the inner sealing part is located between the liquid inlet chamber and the liquid outlet chamber, and the two ends of the intermediate connecting part are respectively connected to the outer sealing part and the inner sealing part; the side wall of the liquid inlet storage tank is provided with supporting ribs, one of the intermediate connecting parts cooperates with two spaced-apart supporting ribs, and one of the supporting ribs supports one end of the intermediate connecting part close to the outer sealing part or the inner sealing part.

[0024] By adopting the above technical solution and using a sealing ring, the outer sealing of the connecting end cover and the valve bracket and the inner sealing between the liquid inlet chamber and the liquid outlet chamber can be achieved. At the same time, the supporting ribs can support the middle connecting part to prevent the inner sealing part from shifting when assembling the connecting end cover and the valve bracket, thereby realizing rapid assembly of the connecting structure and the sealing structure between the connecting end cover and the valve bracket.

[0025] Preferably, the piston drive assembly includes a drive motor and an eccentric wheel, the housing of the drive motor is connected to a side of the pump base away from the piston cylinder, and the output shaft of the drive motor extends between the pump base and the piston cylinder; the eccentric wheel is arranged between the pump base and the piston cylinder, the eccentric wheel is coaxially connected to the output shaft of the drive motor, and a guide ring groove is arranged on the end face of the eccentric wheel close to the piston cylinder, the guide ring groove is for embedding one end of the piston rod outside the piston channel, and the guide ring groove and the eccentric wheel are non-coaxially arranged.

[0026] By adopting the above technical solution, the piston rod can enter and exit the guide ring groove along the axial direction of the pump seat, thereby realizing asynchronous reciprocating linear motion of multiple piston rods and making the assembly and disassembly between the piston rod and the eccentric wheel simpler. At the same time, the pump base can be directly removed from the other end of the pump, so that different types of drive motors can be more easily replaced according to different needs.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. First, the piston rod itself will not be deformed, and water pumping is achieved through the reciprocating motion of the piston rod, so the water pumping accuracy is high; second, the piston rod only reciprocates, so the service life of the piston rod is relatively long, and the seal between the liquid inlet chamber and the liquid outlet chamber is only a simple static seal, so the service life of the pump is relatively long; third, there is only one liquid inlet chamber and liquid outlet chamber, and at the same time, the liquid inlet chamber and the liquid outlet chamber do not have a leap-forward connection structure formed to avoid each other, so the pump has simple flow confluence, simple structure, simple assembly and small size; fourth, the piston drive assembly is connected to the end of the piston rod outside the piston channel, and the end of the piston rod outside the piston channel is also far away from the side where the liquid inlet chamber and the liquid outlet chamber are located, which can not only reduce the volume of the pump in the diameter direction, but also enable the piston drive assembly to be quickly assembled and disassembled from the other end of the pump seat, so that the pump can be assembled more simply and the volume is smaller; 2. Compared with the method that the inlet cavity and the outlet cavity are arranged adjacent to each other on the left and right, this design method, firstly, the volume of the pump seat can be reduced when the volume of the inlet cavity and the outlet cavity remains unchanged; secondly, the piston channels can be evenly distributed around the center line of the pump seat, so that the mutual interference between the piston channels can be reduced, making the movement of water in the pump more stable, and the wall thickness between the piston channels can be larger, thereby reducing the difficulty of manufacturing the pump seat; 3. The liquid connecting channel and the piston channel extend in the radial direction, and the connection point between the liquid connecting channel and the piston channel is located at the farthest position from the center of the pump seat, so the stroke of the piston rod can occupy a larger proportion of the length of the piston channel, thereby greatly reducing the axial size of the pump and slightly reducing the radial size of the pump, while also improving the water pumping efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional structural diagram of the piston pump in the embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the liquid path in the embodiment of the present application to reflect the liquid absorption and discharge states.

[0030] Figure 3 It is a schematic diagram made to illustrate the assembly structure between various components in the pump base in the embodiment of the present application.

[0031] Figure 4 It is a schematic diagram made to illustrate the matching structure between the chamber sealing ring and the valve bracket in the embodiment of the present application.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Pump seat; 11. Liquid inlet chamber; 12. Liquid outlet chamber; 13. Piston channel; 14. Connecting joint; 15. Liquid connecting channel; 2. Liquid inlet check valve; 21. Liquid outlet check valve; 3. Piston rod; 4. Piston drive assembly; 41. Drive motor; 42. Eccentric wheel; 421. Guide ring groove; 5. Connecting end cover; 51. Valve bracket; 52. Piston cylinder; 53. Pump base; 6. Liquid inlet storage tank; 61. Liquid outlet storage tank; 7. Axial stepped joint; 71. Circumferential stepped joint; 8. Chamber sealing ring; 81. Outer sealing part; 82. Inner sealing part; 83. Middle connecting part; 9. Support ribs. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 This application is described in further detail.

[0034] The embodiment of the present application discloses a radial vertical converging piston pump.

[0035] Reference Figure 1 and Figure 2 The radial vertical converging piston pump includes a pump seat 1, a liquid inlet check valve 2, a liquid outlet check valve 21, a piston rod 3 and a piston drive assembly 4. Specifically, the pump seat 1 is provided with a liquid inlet chamber 11, a liquid outlet chamber 12 and a plurality of piston channels 13. The liquid inlet chamber 11 and the liquid outlet chamber 12 are located on the same end of the pump seat 1. The liquid inlet chamber 11 and the liquid outlet chamber 12 have no leaping connection structure formed by avoiding each other, that is, each part of the liquid inlet chamber 11 and the liquid outlet chamber 12 are at the same height in the axial direction of the pump seat 1. The piston channel 13 is connected with the liquid inlet chamber 11 and the liquid outlet chamber 12, so as to form a liquid path structure in the pump.

[0036] Reference Figure 1 and Figure 2 The liquid inlet one-way valve 2 is arranged at the connection between the piston channel 13 and the liquid inlet chamber 11, so that water can only flow into the piston channel 13 from the liquid inlet chamber 11; the liquid outlet one-way valve 21 is arranged at the connection between the piston channel 13 and the liquid outlet chamber 12, so that water can only enter the liquid outlet chamber 12 from the piston channel 13; one end of the piston rod 3 is sealed and slidably arranged in the piston channel 13, and the other end is located on the side of the piston channel 13 away from the liquid inlet chamber 11 and the liquid outlet chamber 12; the piston drive assembly 4 is connected to the end of the piston rod 3 outside the piston channel 13, and the piston drive assembly 4 will drive multiple piston rods 3 to perform asynchronous reciprocating linear motion.

[0037] Reference Figure 1 and Figure 2The structure of the present application has the following advantages: first, the piston rod 3 itself will not be deformed, and water pumping is achieved by the reciprocating motion of the piston rod 3, so the water pumping accuracy is high; second, the piston rod 3 only reciprocates, so the service life of the piston rod 3 is relatively high, and the seal between the liquid inlet chamber 11 and the liquid outlet chamber 12 is only a simple static seal, so the service life of the pump is relatively high; third, there is only one liquid inlet chamber 11 and liquid outlet chamber 12, and at the same time, the liquid inlet chamber 11 and the liquid outlet chamber 12 do not have a leap-type connecting structure formed to avoid each other, so the pump has simple flow confluence, simple structure, simple assembly and small size; fourth, the piston drive assembly 4 is connected to the end of the piston rod 3 outside the piston channel 13, and the end of the piston rod 3 outside the piston channel 13 is also far away from the side where the liquid inlet chamber 11 and the liquid outlet chamber 12 are located, which can not only reduce the volume of the pump in the diameter direction, but also enable the piston drive assembly 4 to be quickly assembled and disassembled from the other end of the pump seat 1, so that the pump can be assembled more simply and the volume is smaller.

[0038] In addition, in the present embodiment, considering that the pump also needs to be connected to an external pipeline, the pump seat 1 is integrally formed with a connecting joint 14 , and there are two connecting joints 14 , one of which is connected to the liquid inlet chamber 11 , and the other connecting joint 14 is connected to the liquid outlet chamber 12 .

[0039] Reference Figure 1 and Figure 2 In order to reduce the volume of the pump, the layout between the liquid inlet chamber 11 and the liquid outlet chamber 12 can be considered. Specifically, the liquid inlet chamber 11 is annular, and the liquid outlet chamber 12 is located on the inner side of the liquid inlet chamber 11. Therefore, when the circumferential length of the pump base 1 is the same, the end surface area of ​​the pump base 1 can be larger, thereby taking into account both the demand for a small pump volume and the demand for large volumes of the liquid inlet chamber 11 and the liquid outlet chamber 12. In addition, the piston channels 13 can be evenly distributed around the circumference of the center line of the pump base 1, which can reduce the mutual interference between the piston channels 13 and make the movement of water in the pump more stable. The wall thickness between the piston channels 13 can also be increased, thereby reducing the manufacturing difficulty of the pump base 1.

[0040] Reference Figure 1 and Figure 2In order to reduce the volume of the pump, the structure of the liquid inlet check valve 2 and the liquid outlet check valve 21 can be considered. Specifically, the liquid inlet check valve 2 and the liquid outlet check valve 21 are silicone umbrella valves. The liquid inlet check valve 2 penetrates the connection between the liquid inlet chamber 11 and the piston channel 13, and the liquid outlet check valve 21 is arranged in the liquid outlet chamber 12. The liquid outlet check valve 21 blocks the connection between the piston channel 13 and the liquid outlet chamber 12 in an undeformed state. The above structure has the following advantages. First, with the help of the characteristics of the silicone umbrella valve, the structure of the pump can be further simpler, the assembly can be simpler, and the volume can be smaller. Second, the special structure of the liquid outlet check valve 21 utilizes the larger volume of the liquid outlet chamber 12, and the channel between the piston channel 13 and the liquid outlet chamber 12 can be smaller. The smaller here refers to the smaller size of the channel in the axial direction, so the volume of the pump can also be smaller.

[0041] Reference Figure 1 and Figure 2 In order to reduce the volume of the pump, the matching structure between the piston channel 13 and the liquid inlet chamber 11 and the liquid outlet chamber 12 can also be considered. Specifically, the piston channel 13 is extended along the diameter direction of the pump seat 1, and a connecting liquid channel 15 is provided between the piston channel 13 and the liquid inlet chamber 11 and the liquid outlet chamber 12. The connecting liquid channel 15 is extended along the radial direction. The side of the connecting liquid channel 15 close to the connecting joint 14 is connected to the liquid inlet chamber 11 and the liquid outlet chamber 12, and the side of the connecting liquid channel 15 far from the connecting joint 14 is connected to the piston channel 13. The connecting point between the connecting liquid channel 15 and the piston channel 13 is farther from the center of the pump seat 1 than the connecting point between the connecting liquid channel 15 and the liquid inlet chamber 11 and the liquid outlet chamber 12, that is, the connecting point between the connecting liquid channel 15 and the piston channel 13 is farther from the center of the pump seat 1, so the stroke of the piston rod 3 can occupy a larger proportion of the length of the piston channel 13, thereby greatly reducing the axial size of the pump, slightly reducing the radial size of the pump, and at the same time improving the water pumping efficiency.

[0042] Reference Figure 1 and Figure 3 The liquid connecting channel 15 requires a relatively large volume, but in order to keep the volume of the pump as small as possible, the flow area of ​​the liquid connecting channel 15 close to the liquid inlet chamber 11 is larger than the flow area close to the liquid outlet chamber 12. While maintaining sufficient volume of the liquid connecting channel 15, the size of the liquid connecting channel 15 in the radial direction can be reduced, thereby further reducing the volume of the pump.

[0043] Reference Figure 1 and Figure 3In order to improve the convenience of pump assembly, the pump seat 1 has a connecting end cover 5, a valve bracket 51, a piston cylinder 52 and a pump base 53 in sequence along the axial direction. The connecting end cover 5 is provided with a connecting joint 14, and a liquid inlet storage tank 6 and a liquid outlet storage tank 61 are provided on the side of the connecting end cover 5 away from the connecting joint 14; the valve bracket 51 is connected to the end face of the connecting end cover 5 away from the connecting joint 14, and a liquid inlet storage tank 6 and a liquid outlet storage tank 61 are also provided on the side of the valve bracket 51 close to the connecting end cover 5. The two liquid inlet storage tanks 6 are combined to form a liquid inlet cavity 11, and the two liquid outlet storage tanks 6 are combined to form a liquid inlet cavity 11. The grooves 61 are combined to form a liquid outlet cavity 12, and the end surface of the valve bracket 51 away from the connection end cover 5 is provided for the setting of the liquid connecting channel 15; the piston cylinder 52 is connected to the end surface of the valve bracket 51 away from the connection end cover 5, and one piston cylinder 52 is provided for the setting of a piston channel 13. Multiple piston cylinders 52 are arranged in a closed circular pattern around the axis of the pump base 1, that is, multiple piston cylinders 52 will completely occupy the non-passing position of the circumferential direction of the pump base 1 after splicing; the pump base 53 is connected to the end surface of the piston cylinder 52 away from the valve bracket 51, and the pump base 53 is provided for the setting of the piston drive assembly 4.

[0044] Reference Figure 1 and Figure 3 The assembly structure of the pump base 53 has the following advantages. First, each individual component only needs to be processed by simple grooving or drilling, and can be spliced ​​in sequence along the axial direction during assembly, so the structure and assembly of the pump are simple. Second, only different specifications of the connecting end cover 5 and the valve bracket 51 need to be replaced, and different numbers of piston cylinders 52 are configured to make pumps with different numbers of piston rods 3, thereby making it easier to manufacture pumps of different specifications.

[0045] Reference Figure 1 and Figure 3 In order to accurately realize the splicing between the various components in the pump base 53, the following settings are correspondingly arranged: an axial step splicing portion 7 is arranged between the connecting end cover 5 and the valve bracket 51 and between the valve bracket 51 and the piston cylinder 52. The axial step splicing portion 7 is exposed on the peripheral side of the pump base 1. The axial step splicing portion 7 is a structure in which a convex block and a groove are embedded, that is, one of the components has a convex block and the other component has a groove. The axial step splicing portion 7 is for bolts to penetrate and fix; a circumferential step splicing portion 71 is arranged between the piston cylinder 52, and the circumferential step splicing portion 71 is exposed on the circumferential side of the pump base 1. On the circumferential side, the circumferential stepped joint 71 is in the form of a structure in which protrusions are embedded up and down, that is, two adjacent components have protrusions, one protrusion is on the top and the other protrusion is on the bottom, and then the two protrusions are embedded up and down, and the circumferential stepped joint 71 is for bolts to pass through and fix. In summary, the axial stepped joint 7 realizes accurate splicing between the connecting end cover 5, the valve bracket 51 and the piston cylinder 52, and the circumferential stepped joint 71 realizes accurate splicing between multiple piston cylinders 52, thereby improving the sealing of the liquid inlet chamber 11, the liquid outlet chamber 12, the liquid connecting channel 15 and the piston channel 13 while realizing simple assembly.

[0046] Reference Figure 1 and Figure 4 In order to more easily realize the sealing assembly between the connecting end cover 5 and the valve bracket 51, a chamber sealing ring 8 is arranged between the valve bracket 51 and the connecting end cover 5. The chamber sealing ring 8 is divided into an outer sealing part 81, an inner sealing part 82 and an intermediate connecting part 83. The outer sealing part 81 is embedded outside the peripheral side of the liquid inlet chamber 11. Specifically, a groove is provided on the end face of the valve bracket 51 close to the connecting end cover 5, and the outer peripheral side of the outer sealing part 81 abuts against the side wall of the groove to fix the installation position of the outer sealing part 81. The inner sealing part 82 is located between the liquid inlet chamber 11 and the liquid outlet chamber 12. The two ends of the intermediate connecting part 83 are respectively connected to the outer sealing part 81 and the inner sealing part 82. At the same time, the side wall of the liquid inlet storage tank 6 is integrally formed with a supporting rib 9. An intermediate connecting part 83 cooperates with two support ribs 9 arranged at intervals, and one support rib 9 supports one end of the intermediate connecting part 83 close to the outer sealing part 81 or the inner sealing part 82.

[0047] Reference Figure 1 and Figure 4 According to the matching structure between the connecting end cover 5 and the valve bracket 51, it can be known that only one sealing ring is used to achieve the outer sealing of the connecting end cover 5 and the valve bracket 51, as well as the inner sealing between the liquid inlet chamber 11 and the liquid outlet chamber 12. At the same time, the supporting ribs 9 can support the middle connecting part 83 to prevent the inner sealing part 82 from shifting when the connecting end cover 5 and the valve bracket 51 are assembled, thereby realizing the rapid assembly of the connecting structure and the sealing structure between the connecting end cover 5 and the valve bracket 51.

[0048] Reference Figure 1If you want the pump to have different functional effects, for example, to be able to control the flow rate, or to be able to control the accuracy, or to obtain the effect of large flow and large pressure, you usually need to replace a different type of power source. In order to facilitate the replacement of the power source, the following settings are correspondingly made: the piston drive assembly 4 includes a drive motor 41 and an eccentric wheel 42. The housing of the drive motor 41 is connected to the side of the pump base 53 away from the piston cylinder 52, and the output shaft of the drive motor 41 extends between the pump base 53 and the piston cylinder 52; the eccentric wheel 42 is arranged between the pump base 53 and the piston cylinder 52, and the eccentric wheel 42 is coaxially connected to the output shaft of the drive motor 41. The eccentric wheel 42 is close to the piston cylinder 52. A guide ring groove 421 is provided on the end surface near the piston cylinder 52, and the guide ring groove 421 is embedded in the end of the piston rod 3 outside the piston channel 13. The guide ring groove 421 and the eccentric wheel 42 are non-coaxially arranged. According to the matching structure between the eccentric wheel 42 and the piston rod 3, the piston rod 3 can enter and exit the guide ring groove 421 along the axial direction of the pump seat 1. This makes the assembly and disassembly between the piston rod 3 and the eccentric wheel 42 simpler while realizing asynchronous reciprocating linear motion of multiple piston rods 3. At the same time, the pump base 53 can be directly removed from the other end of the pump, so that different types of drive motors 41 can be more easily replaced according to different needs.

[0049] The implementation principle of a radial vertical confluence piston pump in the embodiment of the present application is as follows: first, the piston rod 3 itself will not be deformed, and water pumping is achieved by the reciprocating motion of the piston rod 3, so the water pumping accuracy is high; second, the piston rod 3 only has reciprocating motion, so the service life of the piston rod 3 is relatively high, and the seal between the liquid inlet chamber 11 and the liquid outlet chamber 12 is only a simple static seal, so the service life of the pump is relatively high; third, there is only one liquid inlet chamber 11 and liquid outlet chamber 12, and at the same time, the liquid inlet chamber 11 and the liquid outlet chamber 12 do not have a leap-type connecting structure formed to avoid each other, so the pump confluence is simple, the structure is simple, the assembly is simple, and the volume is small; fourth, the piston drive assembly 4 is connected to the end of the piston rod 3 outside the piston channel 13, and the end of the piston rod 3 outside the piston channel 13 is also far away from the side where the liquid inlet chamber 11 and the liquid outlet chamber 12 are located, which can not only reduce the volume of the pump in the diameter direction, but also enable the piston drive assembly 4 to be quickly assembled and disassembled from the other end of the pump seat 1, so that the pump can be assembled more simply and the volume is smaller.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A radial vertical converging piston pump, characterized in that: include: A pump seat (1) is provided with a liquid inlet chamber (11), a liquid outlet chamber (12) and a plurality of piston channels (13); the liquid inlet chamber (11) and the liquid outlet chamber (12) are located on the same end of the pump seat (1); the liquid inlet chamber (11) and the liquid outlet chamber (12) have no leaping connection structure formed by mutual avoidance; and the piston channel (13) is connected to the liquid inlet chamber (11) and the liquid outlet chamber (12); A liquid inlet one-way valve (2) is arranged at the connection point between the piston channel (13) and the liquid inlet chamber (11); a liquid outlet one-way valve (21), arranged at the connection point between the piston channel (13) and the liquid outlet chamber (12); A piston rod (3), one end of which is sealingly slidably disposed in the piston channel (13), and the other end of which is located on a side of the piston channel (13) away from the liquid inlet chamber (11) and the liquid outlet chamber (12); A piston drive assembly (4) is connected to one end of the piston rod (3) outside the piston channel (13) and is used to drive the plurality of piston rods (3) to perform asynchronous reciprocating linear motion.

2. The radial vertical converging piston pump according to claim 1, characterized in that: The liquid inlet cavity (11) is annular, and the liquid outlet cavity (12) is located inside the liquid inlet cavity (11).

3. The radial vertical converging piston pump according to claim 2, characterized in that: The pump seat (1) is integrally formed with a connecting joint (14), and the connecting joint (14) is connected to the liquid inlet cavity (11) or the liquid outlet cavity (12).

4. The radial vertical converging piston pump according to claim 2, characterized in that: The liquid inlet check valve (2) and the liquid outlet check valve (21) are silicone umbrella valves. The liquid inlet check valve (2) is arranged through the connection point between the liquid inlet chamber (11) and the piston channel (13), and the liquid outlet check valve (21) is arranged in the liquid outlet chamber (12). In an undeformed state, the liquid outlet check valve (21) blocks the connection point between the piston channel (13) and the liquid outlet chamber (12).

5. The radial vertical converging piston pump according to claim 3, characterized in that: The piston channel (13) is arranged to extend along the diameter direction of the pump seat (1); a liquid connecting channel (15) is arranged between the piston channel (13) and the liquid inlet chamber (11) and the liquid outlet chamber (12); the side of the liquid connecting channel (15) close to the connecting joint (14) is connected to the liquid inlet chamber (11) and the liquid outlet chamber (12); the side of the liquid connecting channel (15) far from the connecting joint (14) is connected to the piston channel (13); the connecting point of the liquid connecting channel (15) and the piston channel (13) is farther from the center of the pump seat (1) than the connecting point of the liquid connecting channel (15) and the liquid inlet chamber (11) and the liquid outlet chamber (12).

6. The radial vertical converging piston pump according to claim 5, characterized in that: The flow area of ​​the liquid connecting channel (15) on the side close to the liquid inlet chamber (11) is larger than the flow area on the side close to the liquid outlet chamber (12).

7. The radial vertical converging piston pump according to claim 5, characterized in that: The pump seat (1) has a connecting end cover (5), a valve support (51), a piston cylinder (52) and a pump base (53) in sequence along the axial direction; the connecting end cover (5) is provided for the connecting joint (14); a side of the connecting end cover (5) away from the connecting joint (14) is provided with a liquid inlet storage tank (6) and a liquid outlet storage tank (61); the valve support (51) is connected to the end surface of the connecting end cover (5) away from the connecting joint (14); a side of the valve support (51) close to the connecting end cover (5) is also provided with the liquid inlet storage tank (6) and the liquid outlet storage tank (61); the two liquid inlet storage tanks (6) are combined to form a liquid inlet cavity ( 11), the two liquid outlet storage tanks (61) are combined to form a liquid outlet cavity (12), the end surface of the valve bracket (51) away from the connecting end cover (5) is provided for the setting of the liquid connecting channel (15); the piston cylinder (52) is connected to the end surface of the valve bracket (51) away from the connecting end cover (5), one piston cylinder (52) is provided for the setting of one piston channel (13), and a plurality of piston cylinders (52) are arranged in a closed circle around the axis of the pump seat (1); the pump base (53) is connected to the end surface of the piston cylinder (52) away from the valve bracket (51), and the pump base (53) is provided for the setting of the piston drive assembly (4).

8. The radial vertical converging piston pump according to claim 7, characterized in that: An axial step joint (7) is provided between the connecting end cover (5) and the valve support (51) and between the valve support (51) and the piston cylinder (52). The axial step joint (7) is exposed on the circumferential side of the pump seat (1). The axial step joint (7) is in the form of a structure in which a protrusion and a groove are embedded. The axial step joint (7) is provided for bolts to pass through and fix. A circumferential step joint (71) is provided between the piston cylinder (52). The circumferential step joint (71) is exposed on the circumferential side of the pump seat (1). The circumferential step joint (71) is in the form of a structure in which a protrusion is embedded up and down. The circumferential step joint (71) is provided for bolts to pass through and fix.

9. The radial vertical converging piston pump according to claim 7, characterized in that: A chamber sealing ring (8) is provided between the valve bracket (51) and the connecting end cover (5), and the chamber sealing ring (8) is divided into an outer sealing part (81), an inner sealing part (82) and an intermediate connecting part (83). The outer sealing part (81) is embedded outside the peripheral side of the liquid inlet chamber (11), and the inner sealing part (82) is located between the liquid inlet chamber (11) and the liquid outlet chamber (12). The two ends of the intermediate connecting part (83) are respectively connected to the outer sealing part (81) and the inner sealing part (82); the side wall of the liquid inlet storage tank (6) is provided with supporting ribs (9), one of the intermediate connecting parts (83) cooperates with two spaced supporting ribs (9), and one of the supporting ribs (9) supports one end of the intermediate connecting part (83) close to the outer sealing part (81) or the inner sealing part (82).

10. The radial vertical converging piston pump according to claim 7, characterized in that: The piston drive assembly (4) comprises a drive motor (41) and an eccentric wheel (42); the housing of the drive motor (41) is connected to a side of the pump base (53) away from the piston cylinder (52); the output shaft of the drive motor (41) extends between the pump base (53) and the piston cylinder (52); the eccentric wheel (42) is arranged between the pump base (53) and the piston cylinder (52); the eccentric wheel (42) is coaxially connected to the output shaft of the drive motor (41); the end surface of the eccentric wheel (42) close to the piston cylinder (52) is provided with a guide ring groove (421); the guide ring groove (421) is embedded in one end of the piston rod (3) outside the piston channel (13); the guide ring groove (421) and the eccentric wheel (42) are non-coaxially arranged.

Images