A reciprocating pump hydraulic end

Abstract

The utility model discloses a hydraulic end of a reciprocating pump, and relates to the technical field of reciprocating pumps. Its main technical scheme includes a pump body, a boosting mechanism, a first pressure plate and a first connecting piece. A receiving groove is provided on the pump body, and a water inlet joint connected to the receiving groove is provided on the pump body; the boosting mechanism includes a valve body and a plunger arranged in the receiving groove; the liquid inlet of the valve body is connected to the receiving groove, and the valve body is connected to the plunger; when the plunger moves from one end of the receiving groove to the other end of the receiving groove, the liquid inlet of the valve body is opened; when the plunger moves from the other end of the receiving groove to one end of the receiving groove, the liquid outlet of the valve body is opened; the first pressure plate is connected to the receiving groove, and the flow channel on the first pressure plate is connected to the liquid outlet of the valve body; the first connecting piece is connected to the first pressure plate and the pump body. By removing the first connecting piece from the first pressure plate, the first pressure plate and the pump body are separated, so as to facilitate the staff to remove the valve body and the plunger from one end of the groove of the receiving groove to separate the boosting mechanism and the pump body, and improve the replacement efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating pumps, in particular to a hydraulic end of a reciprocating pump. Background Art

[0002] The high-pressure reciprocating pump unit is composed of a prime mover, a coupling, a transmission end, a hydraulic end, and a common base. When it is working, the prime mover drives the crankshaft to rotate through the transmission mechanism, and the crankshaft is connected to the connecting rod, which pushes the connecting rod. The connecting rod is connected to the intermediate rod through the cross head, which pushes the intermediate rod and drives the plunger to make a linear reciprocating motion relative to the high-pressure cylinder sleeve, and the purpose of suction and discharge is achieved under the opening and closing of the hydraulic end pump valve.

[0003] The prior art discloses a hydraulic end of a high-pressure reciprocating pump, including a housing, a water inlet pipe, a water outlet valve block and a plurality of plunger boosting mechanisms; the plunger boosting mechanism includes a plunger, a locking nut, a stuffing box, a high-pressure cylinder, a high-pressure pipe, a pump head, a water suction and drainage combination valve, a combined sealing ring and a clamping ring, the water suction and drainage combination valve is arranged between the high-pressure cylinder and the pump head, one end of the high-pressure cylinder is connected to the pump head, the locking nut is cooperatively embedded in the other end of the high-pressure cylinder, the stuffing box is arranged inside the high-pressure cylinder, the plunger passes through the locking nut and is cooperatively slidably arranged in the stuffing box. When the stuffing box needs to be replaced, the plunger and the water suction and drainage combination valve need to be removed from both ends of the stuffing box, which greatly reduces the replacement efficiency. Utility Model Content

[0004] The utility model aims to provide a hydraulic end of a reciprocating pump, which separates the first pressure plate and the pump body by removing the first connecting piece from the first pressure plate, thereby facilitating the staff to remove the valve body and the plunger from one end of the accommodating groove to separate the boosting mechanism and the pump body and improve the replacement efficiency.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A reciprocating pump hydraulic end, comprising a pump body, a boosting mechanism, a first pressure plate and a first connecting member, wherein a receiving groove is provided on the pump body, and the receiving groove extends from one end of the pump body to the other end of the pump body; a water inlet joint is provided on the side wall of the pump body, and the water inlet joint is communicated with the receiving groove; the boosting mechanism is arranged in the receiving groove, and the boosting mechanism comprises a valve body and a plunger; the plunger is slidably arranged in the receiving groove, and the plunger is sealed and connected to the receiving groove, and the plunger is used to reciprocate from one end of the receiving groove to the other end of the receiving groove; the liquid inlet of the valve body is communicated with the receiving groove, and the valve body is connected to the plunger wherein the valve body is used to open the liquid inlet when the plunger is in a state of moving from one end of the accommodating groove to the other end of the accommodating groove; the valve body is also used to open the liquid outlet when the plunger is in a state of moving from the other end of the accommodating groove to one end of the accommodating groove; the first pressure plate is sealingly connected to an end of the accommodating groove away from the plunger, the first pressure plate is provided with a flow channel, the flow channel extends along a side of the first pressure plate away from the plunger to a side of the first pressure plate close to the plunger, and an end of the flow channel close to the plunger is connected to the liquid outlet of the valve body; the first connecting member is connected to the first pressure plate and the pump body.

[0007] A further solution is: the hydraulic end of the reciprocating pump also includes a second pressure plate and a second connecting member; the second pressure plate is connected to an end of the accommodating groove away from the first pressure plate, and the second pressure plate is sleeved on the plunger; the second connecting member is connected to the second pressure plate and the pump body.

[0008] A further solution is that the mechanical strength of the first connecting member is greater than the mechanical strength of the second connecting member.

[0009] A further solution is: the hydraulic end of the reciprocating pump also includes a cylinder sleeve; the cylinder sleeve is slidably arranged in the accommodating groove; the cylinder sleeve is sealed and connected to the side wall of the accommodating groove; the cylinder sleeve is sleeved on the plunger; the cylinder sleeve is sealed and connected to the plunger, and the two ends of the cylinder sleeve are respectively abutted against the valve body and the second pressure plate.

[0010] A further solution is: a first mounting groove is opened at one end of the cylinder sleeve close to the second pressure plate; a sealing spring is arranged in the first mounting groove; the sealing spring is sleeved on the plunger; one end of the sealing spring is connected to the plunger; and the other end of the sealing spring abuts against the second pressure plate.

[0011] A further solution is: a second mounting groove is formed at one end of the cylinder sleeve close to the valve body; a water inlet valve spring is arranged in the second mounting groove; and two ends of the water inlet valve spring are respectively connected to the second mounting groove and the valve body.

[0012] A further solution is: the hydraulic end of the reciprocating pump also includes a spring support; the flow channel is opened in the spring support; the spring support is penetrated by the first pressure plate; one end of the spring support abuts against the valve body; the other end of the spring support is opened with a third mounting groove; the bottom of the third mounting groove abuts against the first pressure plate.

[0013] A further solution is: the valve body includes a valve seat body, an inlet valve, a ball valve and an outlet valve spring; the two ends of the valve seat body are respectively abutted against the cylinder sleeve and the spring support; the liquid inlet and the liquid outlet are both arranged in the valve seat body; a pipe connecting the liquid inlet and the liquid outlet is opened in the valve seat body; the inlet valve is arranged at one end of the pipe close to the liquid inlet, and the inlet valve is used to open or close the liquid inlet; and the inlet valve is connected to the plunger and the inlet valve spring; the ball valve is arranged at one end of the pipe close to the liquid outlet, and the ball valve is used to open or close the liquid outlet; the outlet valve spring is arranged in the valve seat body, and the spring abuts against the ball valve.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] By removing the first connecting piece from the first pressure plate to separate the first pressure plate and the pump body, it is convenient for the staff to remove the valve body and the plunger from one end of the accommodating groove to separate the boosting mechanism and the pump body and improve the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of a hydraulic end of a reciprocating pump in this embodiment;

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure at AA in the middle;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 This is a schematic diagram of the bottom view of the hydraulic end of a reciprocating pump in this embodiment.

[0020] Marks and corresponding parts names in the attached drawings:

[0021] 1- pump body; 2- receiving tank; 3- water inlet joint;

[0022] 4-boosting mechanism; 41-valve body; 411-valve seat body; 412-water inlet valve; 413-ball valve; 414-water outlet valve spring; 42-plunger;

[0023] 5-liquid inlet; 6-liquid outlet; 7-first pressure plate; 8-flow channel; 9-first connecting piece; 10-second pressure plate; 11-second connecting piece; 12-cylinder sleeve; 13-first mounting groove; 14-sealing spring; 15-second mounting groove; 16-water inlet valve spring; 17-spring support; 18-third mounting groove; 19-pipeline; 20-front support sleeve; 21-sealing pad; 22-rear support ring; 23-supporting pressure sleeve; 24-connecting elbow; 25-liquid collecting. DETAILED DESCRIPTION

[0024] The utility model will be further described below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] This embodiment provides a reciprocating pump hydraulic end, such as Figure 1-Figure 4 As shown, it includes a pump body 1, a boosting mechanism 4, a first pressure plate 7 and a first connecting member 9, the pump body 1 is provided with a receiving groove 2, and the receiving groove 2 extends from one end of the pump body 1 to the other end of the pump body 1; the side wall of the pump body 1 is provided with a water inlet joint 3, and the water inlet joint 3 is communicated with the receiving groove 2; the boosting mechanism 4 is arranged in the receiving groove 2, and the boosting mechanism 4 includes a valve body 41 and a plunger 42; the plunger 42 is slidably arranged in the receiving groove 2, and the plunger 42 is sealed and connected to the receiving groove 2, and the plunger 42 is used to reciprocate along one end of the receiving groove 2 to the other end of the receiving groove 2; the liquid inlet 5 of the valve body 41 is communicated with the receiving groove 2, and the valve body 41 is connected to the plunger 42; Wherein, the valve body 41 is used to open the liquid inlet 5 when the plunger 42 is in a state of moving from one end of the accommodating groove 2 to the other end of the accommodating groove 2; the valve body 41 is also used to open the liquid outlet 6 when the plunger 42 is in a state of moving from the other end of the accommodating groove 2 to one end of the accommodating groove 2; the first pressure plate 7 is sealingly connected to the end of the accommodating groove 2 away from the plunger 42, and the first pressure plate 7 is provided with a flow channel 8, and the flow channel 8 extends along the side of the first pressure plate 7 away from the plunger 42 to the side of the first pressure plate 7 close to the plunger 42, and the end of the flow channel 8 close to the plunger 42 is connected to the liquid outlet 6 of the valve body 41; the first connecting member 9 is connected to the first pressure plate 7 and the pump body 1.

[0027] For example, in the implementation process, a receiving groove 2 is provided on the pump body 1, and the receiving groove 2 extends from one end of the pump body 1 to the other end of the pump body 1, and a water inlet joint 3 is provided on the side wall of the pump body 1 by welding, screwing, etc., and the water inlet joint 3 is connected with the receiving groove 2. The purpose of facilitating liquids such as water and oil to flow into the receiving groove 2 through the water inlet joint 3 is achieved.

[0028] The boost mechanism 4 is arranged in the receiving groove 2, and the boost mechanism 4 includes a valve body 41 and a plunger 42. Among them, the plunger 42 is slidably arranged in the receiving groove 2, so that the plunger 42 can reciprocate along the direction from one end of the receiving groove 2 to the other end of the receiving groove 2. The outer wall of the plunger 42 is sealed and connected to the groove wall of the receiving groove 2 through a sealing gasket 21, a sealing ring and other structures. The purpose of reducing the risk of liquid leakage from the plunger 42 and the groove wall of the receiving groove 2 during operation is achieved. The valve body 41 is connected to one end of the plunger 42. When the plunger 42 slides along one end of the receiving groove 2 to the other end of the receiving groove 2, the liquid inlet 5 of the valve body 41 is opened. The purpose of sucking the liquid in the receiving groove 2 into the inside of the valve body 41 is achieved. When the plunger 42 slides along the other end of the receiving groove 2 to one end of the receiving groove 2, the liquid outlet 6 of the valve body 41 is opened. The purpose of discharging the liquid in the valve body 41 from the liquid outlet 6 is achieved. At the same time, the reciprocating motion of the plunger 42 is used to achieve the suction and discharge of liquid, thereby achieving the purpose of improving the working efficiency of the reciprocating pump.

[0029] The first connecting member 9 can be a bolt, a pin or other structure. The first connecting member 9 is inserted into the first pressing plate 7 and the pump body 1 along the axial direction of the receiving groove 2 to fix the first pressing plate 7 on the end of the receiving groove 2 away from the plunger 42. When in use, the first connecting member 9 can be removed from the first pressing plate 7 to separate the first pressing plate 7 and the pump body 1, thereby facilitating the staff to remove the valve body 41 and the plunger 42 from one end of the notch of the receiving groove 2 to separate the booster mechanism 4 and the pump body 1 and improve the replacement efficiency. The first pressing plate 7 is sealed and connected to the pump body 1 through a sealing gasket 21, a sealing ring or other structures to reduce the risk of liquid leakage from the gap between the first pressing plate 7 and the pump body 1. A flow channel 8 is provided on the first pressing plate 7, and the flow channel 8 extends from the side of the first pressing plate 7 away from the plunger 42 to the side of the first pressing plate 7 close to the plunger 42, and the flow channel 8 is connected to the liquid outlet 6 of the valve body 41. The purpose is to help guide the liquid flow smoothly, reduce pressure loss and turbulence, and thus improve the efficiency and stability of the reciprocating pump.

[0030] Example 2

[0031] like Figure 1 As shown, based on the above-mentioned embodiment 1, in this embodiment, the hydraulic end of the reciprocating pump also includes a second pressure plate 10 and a second connecting member 11; the second pressure plate 10 is connected to the end of the accommodating groove 2 away from the first pressure plate 7, and the second pressure plate 10 is sleeved on the plunger 42; the second connecting member 11 is connected to the second pressure plate 10 and the pump body 1.

[0032] Exemplarily, in the implementation process, the hydraulic end of the reciprocating pump further includes a second pressing plate 10 and a second connecting member 11. The second connecting member 11 can be a bolt, a pin or the like. The second connecting member 11 is arranged in the second pressing plate 10 and the pump body 1 along the axial direction of the receiving groove 2 to fix the second pressing plate 10 on the end of the receiving groove 2 away from the first pressing plate 7. A mounting hole is provided on the second pressing plate 10, and the plunger 42 is arranged in the mounting hole on the second pressing plate 10. The purpose of guiding and supporting the movement of the plunger 42 is achieved.

[0033] When in use, the second pressing plate 10 and the pump body 1 can be separated by removing the second connecting member 11 from the second pressing plate 10. On the one hand, it is convenient for the staff to remove the valve body 41 and the plunger 42 from the other end of the notch of the receiving groove 2 to separate the boosting mechanism 4 and the pump body 1, and improve the replacement efficiency. On the other hand, when it is necessary to replace only the plunger 42, the staff can remove the second connecting member 11 to separate the second pressing plate 10 and the pump body 1, and then remove the plunger 42 from the end of the receiving groove 2 away from the first pressing plate 7, so as to achieve the purpose of not removing the valve body 41 and the plunger 42 at the same time to improve the work efficiency. On the other hand, when it is necessary to replace only the valve body 41, the staff can remove the first connecting member 9 to separate the first pressing plate 7 and the pump body 1, and then remove the valve body 41 from the end of the receiving groove 2 away from the second plate body, so as to achieve the purpose of not removing the valve body 41 and the plunger 42 at the same time to improve the work efficiency.

[0034] Example 3

[0035] On the basis of the above-mentioned embodiment 2, in this embodiment, the mechanical strength of the first connecting member 9 is greater than the mechanical strength of the second connecting member 11 .

[0036] For example, during implementation, the mechanical strength of the first connecting member 9 is higher than that of the second connecting member 11. That is, when subjected to the same external force, the second connecting member 11 is more likely to break than the first connecting member 9.

[0037] When in use, one end of the pump body 1 provided with the first pressing plate 7 is provided with a connecting elbow 24 and a liquid collector 25. Among them, one end of the connecting elbow 24 is connected to the liquid outlet 6 of the valve body 41 through the flow channel 8 on the first pressing plate 7. The liquid collector 25 is connected to the outer wall of the pump body 1 by screwing, welding, etc., and the liquid collector 25 is connected to the other end of the connecting elbow 24. When the hydraulic end of the reciprocating pump is used, in order to facilitate the monitoring and maintenance of the staff. One end of the liquid collector of the pump body 1 is set toward the side where the staff will be active. When the hydraulic end of the reciprocating pump is working, the first pressing plate 7 and the second pressing plate 10 at both ends of the accommodating tank 2 are both subjected to the pressure of the liquid in the accommodating tank 2. At this time, the pressures on the first pressing plate 7 and the second pressing plate 10 are the same, and the pressure on the first pressing plate 7 is transmitted along the direction of the second pressing plate 10 to the first pressing plate 7 and transmitted to the first connecting member 9. The pressure on the second pressing plate 10 is transmitted along the direction of the first pressing plate 7 to the second pressing plate 10 and transmitted to the second connecting member 11. Once the pressure applied to the first pressure plate 7 and the second pressure plate 10 is greater than the pressure corresponding to the mechanical strength of the second connecting member 11, the second connecting member 11 breaks before the first connecting member 9, thereby reducing the risk of the first connecting member 9 breaking and causing injury to the workers in the working area.

[0038] Example 4

[0039] like Figure 3 As shown, on the basis of the above-mentioned embodiment 2, in this embodiment, the hydraulic end of the reciprocating pump also includes a cylinder sleeve 12; the cylinder sleeve 12 is slidably arranged in the accommodating groove 2; the cylinder sleeve 12 is sealed and connected to the side wall of the accommodating groove 2; the cylinder sleeve 12 is sleeved on the plunger 42; the cylinder sleeve 12 is sealed and connected to the plunger 42, and the two ends of the cylinder sleeve 12 are respectively abutted against the valve body 41 and the second pressure plate 10.

[0040] Exemplarily, in the implementation process, the hydraulic end of the reciprocating pump further includes a cylinder sleeve 12, which is slidably disposed inside the receiving tank 2 and can reciprocate from one end of the receiving tank 2 to the other end of the receiving tank 2. The cylinder sleeve 12 is sleeved on the plunger 42, and the cylinder sleeve 12 and the side wall of the receiving tank 2, and the cylinder sleeve 12 and the plunger 42 are sealed. The purpose is to reduce the risk of leakage of the liquid in the receiving tank 2 from the gap between the plunger 42 and the cylinder sleeve 12, and between the cylinder sleeve 12 and the receiving tank 2 when the plunger 42 reciprocates.

[0041] Furthermore, the two ends of the cylinder sleeve 12 are respectively close to the valve body 41 and the second pressure plate 10. In the process of the reciprocating motion of the plunger 42, an additional support point is provided for the plunger 42, which helps to reduce the vibration of the plunger 42 in high-speed motion, thereby improving the operation stability of the reciprocating pump.

[0042] Preferably, a sealing ring is provided at the position where the cylinder sleeve 12, the side wall of the receiving groove 2 and the second pressing plate 10 are connected, so as to achieve the purpose of sealing connection between the cylinder sleeve 12 and the groove wall of the receiving groove 2, between the cylinder sleeve 12 and the second pressing plate 10, and between the groove wall of the receiving groove 2 and the second pressing plate 10 at the same time.

[0043] Example 5

[0044] like Figure 3 As shown, on the basis of the above-mentioned embodiment 4, in this embodiment, a first mounting groove 13 is opened at one end of the cylinder sleeve 12 close to the second pressure plate 10; a sealing spring 14 is arranged in the first mounting groove 13; the sealing spring 14 is sleeved on the plunger 42; one end of the sealing spring 14 is connected to the plunger 42; and the other end of the sealing spring 14 abuts against the second pressure plate 10.

[0045] For example, in the implementation process, a first installation groove 13 is provided at one end of the cylinder sleeve 12 close to the second pressure plate 10, and the sealing spring 14 is installed in the first installation groove 13. The sealing spring 14 is sleeved on the plunger 42, and one end of the sealing spring 14 is fixedly connected to the plunger 42 by welding, screwing, etc., and the other end of the sealing spring 14 abuts against the side of the second pressure plate 10 close to the first pressure plate 7. The sealing spring 14 can provide a pre-tightening force for the sealing pair and compensate for the wear of the seal.

[0046] Preferably, a front support sleeve 20, a sealing gasket 21, a rear support ring 22, and a support sleeve 23 are also provided in the first installation groove 13. The front support sleeve 20, the sealing gasket 21, the rear support ring 22, and the support sleeve 23 are all sleeved on the plunger 42. The front support sleeve 20, the sealing gasket 21, the rear support ring 22, and the support sleeve 23 are sequentially arranged along the direction of the sealing spring 14 toward the second pressing plate 10. Among them, a connecting groove is provided in a section of the support sleeve 23 close to the second pressing plate 10, and the bottom of the connecting groove is clamped between the shaft sleeve and the second pressing plate 10, and the front support sleeve 20 is connected to the sealing spring 14. The side of the shaft sleeve away from the connecting groove abuts against the second pressing plate 10. The purpose of ensuring the sealing between the shaft sleeve and the plunger 42 is achieved.

[0047] Example 6

[0048] like Figure 3 As shown, based on the above-mentioned embodiment 5, in this embodiment, a second mounting groove 15 is opened at one end of the cylinder sleeve 12 close to the valve body 41; a water inlet valve spring 16 is arranged in the second mounting groove 15; and both ends of the water inlet valve spring 16 are respectively connected to the second mounting groove 15 and the valve body 41.

[0049] For example, in the implementation process, a second installation groove 15 is provided at one end of the cylinder sleeve 12 close to the valve body 41, and a water inlet valve spring 16 is installed in the second installation groove 15, and two ends of the water inlet valve spring 16 are respectively connected to the bottom of the second installation groove 15 and the valve body 41. The water inlet valve spring 16 can be elastically deformed with the reciprocating motion of the plunger 42, so as to achieve the purpose of allowing the liquid in the accommodating groove 2 to flow into the valve body 41.

[0050] Example 7

[0051] like Figure 1 As shown, on the basis of the above-mentioned embodiment 6, in this embodiment, the hydraulic end of the reciprocating pump also includes a spring support 17; the flow channel 8 is opened in the spring support 17; the spring support 17 is penetrated by the first pressure plate 7; one end of the spring support 17 abuts against the valve body 41; the other end of the spring support 17 is opened with a third mounting groove 18; the bottom of the third mounting groove 18 abuts against the first pressure plate 7.

[0052] Exemplarily, in the implementation process, the hydraulic end of the reciprocating pump further includes a spring support 17, and the flow channel 8 is opened on the spring support 17. A third mounting groove 18 is opened at one end of the spring support 17, and a mounting hole is opened on the first pressure plate 7.

[0053] The spring support 17 is inserted into the mounting hole of the first pressure plate 7, and the groove wall of the third mounting groove 18 is in contact with the hole wall of the mounting hole, and the groove bottom of the third mounting groove 18 is in contact with the side of the first pressure plate 7 close to the valve body 41. The other end of the spring support 17 is in contact with the valve body 41. The purpose of stabilizing the valve body 41 in the accommodating groove 2 is achieved through the spring support 17 and the cylinder sleeve 12.

[0054] Preferably, a sealing gasket 21 is provided between the spring support 17 and the side wall of the receiving groove 2 to reduce the risk of liquid leakage from the spring support 17 and the side wall of the receiving groove 2 .

[0055] Example 8

[0056] like Figure 3As shown, on the basis of the above-mentioned embodiment 7, in this embodiment, the valve body 41 includes a valve seat body 411, a water inlet valve 412, a ball valve 413 and a water outlet valve spring 414; the two ends of the valve seat body 411 are respectively abutted against the cylinder sleeve 12 and the spring support 17; the liquid inlet 5 and the liquid outlet 6 are both arranged on the valve seat body 411; a pipe 19 connecting the liquid inlet 5 and the liquid outlet 6 is opened in the valve seat body 411; the water inlet valve 412 is provided Placed at one end of the pipeline 19 close to the liquid inlet 5, the water inlet valve 412 is used to open or close the liquid inlet 5; and the water inlet valve 412 is connected to the plunger 42 and the water inlet valve spring 16; the ball valve 413 is arranged at one end of the pipeline 19 close to the liquid outlet 6, and the ball valve 413 is used to open or close the liquid outlet 6; the water outlet valve spring 414 is arranged in the valve seat body 411, and the spring abuts against the ball valve 413.

[0057] Exemplarily, in the implementation process, the valve body 41 includes a valve seat body 411, a water inlet valve 412, a ball valve 413 and a water outlet valve spring 414. The two ends of the valve seat body 411 are tightly fitted on the cylinder sleeve 12 and the spring support 17, respectively, to enhance the stability of the valve seat body 411 and enhance the sealing of the reciprocating pump under high-pressure working environment, thereby reducing liquid leakage and improving work efficiency and safety. Among them, the valve seat body 411 is provided with a liquid inlet 5 connected to the receiving groove 2, and a liquid outlet 6 connected to the flow channel 8. A pipeline 19 is provided inside the valve seat body 411, and its two ends are connected to the liquid inlet 5 and the liquid outlet 6 respectively. The water inlet valve 412 is located at one end of the pipeline 19 close to the liquid inlet 5, and the water inlet valve 412 is connected to the plunger 42 and the water inlet valve spring 16. When the plunger 42 moves from the first pressing plate 7 to the second pressing plate 10, the water inlet valve spring 16 is compressed to connect the pipeline 19 with the liquid inlet 5. When the plunger 42 moves along the second pressing plate 10 toward the first pressing plate 7, the water inlet valve spring 16 stretches to block the water inlet valve 412 on the pipe 19, thereby disconnecting the pipe 19 from the liquid inlet 5. The ball valve 413 is arranged at one end of the pipe 19 close to the liquid outlet 6, and the water outlet valve spring 414 is arranged in the valve seat body 411, and the water outlet valve spring 414 is connected to the ball valve 413. When the plunger 42 moves along the first pressing plate 7 toward the second pressing plate 10, the water outlet valve spring 414 stretches to abut the ball valve 413 on the pipe 19, thereby disconnecting the pipe 19 from the liquid outlet 6. When the plunger 42 moves along the second pressing plate 10 toward the first pressing plate 7, the water outlet valve spring 414 contracts, and the ball valve 413 is separated from the pipe 19, thereby connecting the pipe 19 to the liquid outlet 6.

[0058] An installation method of the hydraulic end of the reciprocating pump provided in this embodiment during use is as follows:

[0059] Place the second pressing plate 10 at one end of the receiving groove 2, and make the mounting hole on the second pressing plate 10 coaxial with the receiving groove 2. Connect the second pressing plate 10 to the pump body 1 through the second connecting member 11. Insert the plunger 42 into the receiving groove 2 from the other end of the receiving groove 2 to the direction of one end of the receiving groove 2, and make the plunger 42 penetrate into the mounting hole of the second pressing plate 10. Put the supporting sleeve 23, the rear supporting ring 22, the sealing gasket 21, the front supporting sleeve 20, the sealing spring 14, and the shaft sleeve into the receiving groove 2 in sequence, and make the supporting sleeve 23, the rear supporting ring 22, the sealing gasket 21, the front supporting sleeve 20, the sealing spring 14, and the shaft sleeve all penetrate into the plunger 42. And install the supporting sleeve 23, the rear supporting ring 22, the sealing gasket 21, the front supporting sleeve 20, and the sealing spring 14 in the first mounting groove 13 of the shaft sleeve, and make the shaft sleeve fit with the second pressing plate 10. Install the water inlet valve spring 16 in the second mounting groove 15 of the shaft sleeve. Put the water inlet valve 412 of the valve body 41 into the receiving groove 2, and connect the water inlet valve 412 of the valve body 41 with the plunger 42. Put the valve seat body 411 of the valve body 41 into the receiving groove 2, so that the valve seat body 411 fits the notch of the second mounting groove 15 of the shaft sleeve, and the water inlet valve 412 closes the liquid inlet 5 on the valve seat body 411. Put the spring support 17 into the receiving groove 2, and make the spring support 17 fit with the end of the valve seat body 411 away from the plunger 42. Put the first pressing plate 7 on the end of the spring support 17 away from the plunger 42, and connect the first pressing plate 7 to the pump body 1 through the first connecting member 9, and make the first pressing plate 7 give the spring support 17 pressure in the direction of the plunger 42, so that the first pressing plate 7 and the spring support 17, the spring support 17 and the valve seat body 411, the valve seat body 411 and the shaft sleeve, and the shaft sleeve and the second pressing plate 10 are all in contact.

[0060] Another installation method of the hydraulic end of the reciprocating pump provided in this embodiment during use is as follows:

[0061] In this installation method, each component is installed in sequence from the first pressing plate 7 to the second pressing plate 10. The installation method is similar to that in the first installation method, and will not be described in detail here.

[0062] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to modifications and improvements to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A reciprocating pump hydraulic end, characterized in that: include: A pump body (1), wherein a receiving groove (2) is provided on the pump body (1), and the receiving groove (2) extends from one end of the pump body (1) toward the other end of the pump body (1); a water inlet joint (3) is provided on the side wall of the pump body (1), and the water inlet joint (3) is communicated with the receiving groove (2); A pressure boosting mechanism (4), the pressure boosting mechanism (4) being arranged in the receiving groove (2), the pressure boosting mechanism (4) comprising a valve body (41) and a plunger (42); the plunger (42) being slidably arranged in the receiving groove (2), and the plunger (42) being sealedly connected to the receiving groove (2), and the plunger (42) being used for reciprocating along one end of the receiving groove (2) toward the other end of the receiving groove (2); the liquid inlet (5) of the valve body (41) The valve body (41) is connected to the plunger (42), wherein the valve body (41) is used to open the liquid inlet (5) when the plunger (42) is in a state of moving from one end of the accommodating groove (2) to the other end of the accommodating groove (2); the valve body (41) is also used to open the liquid outlet (6) when the plunger (42) is in a state of moving from the other end of the accommodating groove (2) to one end of the accommodating groove (2); a first pressing plate (7), the first pressing plate (7) being sealed and connected to an end of the accommodating groove (2) away from the plunger (42), the first pressing plate (7) being provided with a flow channel (8), the flow channel (8) extending from a side of the first pressing plate (7) away from the plunger (42) to a side of the first pressing plate (7) close to the plunger (42), and an end of the flow channel (8) close to the plunger (42) being communicated with a liquid outlet (6) of the valve body (41); A first connecting member (9), wherein the first connecting member (9) is connected to the first pressing plate (7) and the pump body (1).

2. The reciprocating pump hydraulic end according to claim 1, characterized in that: It also includes a second pressing plate (10) and a second connecting member (11); The second pressing plate (10) is connected to an end of the accommodating groove (2) away from the first pressing plate (7), and the second pressing plate (10) is sleeved on the plunger (42); The second connecting member (11) is connected to the second pressing plate (10) and the pump body (1).

3. The reciprocating pump hydraulic end according to claim 2, characterized in that: The mechanical strength of the first connecting member (9) is greater than the mechanical strength of the second connecting member (11).

4. The reciprocating pump hydraulic end according to claim 2, characterized in that: Also includes a cylinder liner (12); The cylinder sleeve (12) is slidably disposed in the accommodating groove (2); The cylinder sleeve (12) is sealedly connected to the side wall of the accommodating groove (2); The cylinder sleeve (12) is sleeved on the plunger (42); The cylinder sleeve (12) is sealedly connected to the plunger (42), and two ends of the cylinder sleeve (12) are respectively in contact with the valve body (41) and the second pressure plate (10).

5. The reciprocating pump hydraulic end according to claim 4, characterized in that: A first mounting groove (13) is formed at one end of the cylinder sleeve (12) close to the second pressing plate (10); A sealing spring (14) is arranged in the first installation groove (13); The sealing spring (14) is sleeved on the plunger (42); One end of the sealing spring (14) is connected to the plunger (42); The other end of the sealing spring (14) abuts against the second pressing plate (10).

6. The reciprocating pump hydraulic end according to claim 5, characterized in that: A second mounting groove (15) is formed at one end of the cylinder sleeve (12) close to the valve body (41); A water inlet valve spring (16) is arranged in the second installation groove (15); Two ends of the water inlet valve spring (16) are respectively connected to the second mounting groove (15) and the valve body (41).

7. The reciprocating pump hydraulic end according to claim 6, characterized in that: Also includes a spring support (17); The flow channel (8) is opened on the spring support (17); The spring support (17) is disposed through the first pressing plate (7); One end of the spring support (17) abuts against the valve body (41); The other end of the spring support (17) is provided with a third mounting groove (18); The bottom of the third mounting groove (18) abuts against the first pressing plate (7).

8. The reciprocating pump hydraulic end according to claim 7, characterized in that: The valve body (41) comprises a valve seat body (411), a water inlet valve (412), a ball valve (413) and a water outlet valve spring (414); Two ends of the valve seat body (411) are respectively in contact with the cylinder sleeve (12) and the spring support (17); The liquid inlet (5) and the liquid outlet (6) are both arranged on the valve seat body (411); A pipe (19) is provided in the valve seat body (411) and is connected to the liquid inlet (5) and the liquid outlet (6); The water inlet valve (412) is arranged at one end of the pipeline (19) close to the liquid inlet (5), and the water inlet valve (412) is used to open or close the liquid inlet (5); and the water inlet valve (412) is connected to the plunger (42) and the water inlet valve spring (16); The ball valve (413) is arranged at one end of the pipeline (19) close to the liquid outlet (6), and the ball valve (413) is used to open or close the liquid outlet (6); The water outlet valve spring (414) is disposed in the valve seat body (411), and the spring abuts against the ball valve (413).

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