CN218953543U - High-pressure pump head and plunger structure thereof - Google Patents
High-pressure pump head and plunger structure thereof Download PDFInfo
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- CN218953543U CN218953543U CN202223613493.5U CN202223613493U CN218953543U CN 218953543 U CN218953543 U CN 218953543U CN 202223613493 U CN202223613493 U CN 202223613493U CN 218953543 U CN218953543 U CN 218953543U
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- plunger rod
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- pressure pump
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Abstract
The utility model provides a high-pressure pump head and a plunger structure thereof. The utility model comprises a plunger head and a plunger rod, wherein a mounting cavity for mounting the plunger rod is arranged in the plunger head, a mounting hole for the plunger rod to pass through is also arranged on the plunger head, the mounting hole is in clearance fit with the plunger rod, a rubber gasket is sleeved on the plunger rod, the rubber gasket is in tight fit with the plunger rod, and the outer side of the rubber gasket abuts against the inner wall of the mounting cavity. The plunger rod has certain circumferential elastic displacement allowance, so that abrasion of the plunger rod can be reduced during high-speed movement, and rigid contact breakage of the plunger rod is prevented.
Description
Technical Field
The utility model relates to the field of high-pressure pumps, in particular to a high-pressure pump head and a plunger structure thereof.
Background
The high-pressure pump is widely applied to the field of industrial high-pressure water cleaning and descaling, and can strip and wash away dirt when being matched with the high-pressure water gun, so as to achieve the aim of cleaning the surface of an object. The high-pressure plunger pump and the high-pressure reciprocating pump belong to positive displacement pumps, and the purpose of conveying liquid is achieved by means of the periodical change of the volume in the working cavity. The mechanical energy of the prime mover is directly converted by the pump into pressure energy for delivering the liquid.
As shown in chinese patent publication No. CN2924063Y, it discloses a five-cylinder horizontal piston pump, which is composed of a power end, a hydraulic end and a base, wherein the power end and the hydraulic end are arranged on the base, the power end is composed of a power input shaft, an eccentric wheel assembly, a connecting rod and a cross head, the eccentric wheel assembly is fixed on the power input shaft, one end of the connecting rod is hinged on the eccentric wheel assembly, the other end is hinged with the cross head, and the other end of the cross head is connected with a plunger on the hydraulic end through a push rod. The power end of the high-pressure pump drives the crankshaft to rotate, and the plunger is pushed to do linear reciprocating motion, so that the liquid sucking and discharging purpose is achieved under the opening and closing action of the inlet valve of the pump head.
Also shown in the patent publication CN201255087Y is a plunger high-pressure pump which also realizes suction and discharge of the pump by reciprocating the plunger. In the structure, the plunger rod on the plunger is rigidly assembled in the assembly hole, and the plunger rod and the plunger head are in interference fit. However, due to errors in the production of the device and errors in assembly, the motion precision of the plunger is affected, the matching of the plunger rod and the plunger hole is not always on the same axis, and under the condition that the high-pressure pump runs at a high speed, the motion abrasion of the plunger is serious, and even the plunger is easy to break due to rigid contact.
Disclosure of Invention
In view of the above, a first object of the present utility model is to provide a plunger structure of a high-pressure pump, in which the plunger is less likely to break at high-speed movement and less likely to wear.
In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a high-pressure pump plunger structure, includes plunger head and plunger rod, be equipped with the installation cavity that supplies the plunger rod to install in the plunger head, still be equipped with the mounting hole that supplies the plunger rod to pass on the plunger head, mounting hole and plunger rod clearance fit, the cover is equipped with the rubber packing ring on the plunger rod, rubber packing ring and plunger rod tight fit, the outside of rubber packing ring supports in the inner wall of installation cavity.
Through the technical scheme, a certain gap exists between the mounting hole and the plunger rod, and when a certain deviation exists between the plunger rod and the matched hole, the position can be finely adjusted through the gap; meanwhile, when the plunger rod moves, the rubber gasket can ensure that the plunger rod is positioned at the axial position, so that the movement precision of the plunger rod is ensured; if the plunger rod moves and deflects, the rubber gasket can also deform, so that the position of the plunger rod is adjusted, and the plunger rod is prevented from moving and breaking; meanwhile, the plunger rod is prevented from being in rigid contact with the hole site all the time when moving at a high speed, and abrasion of the plunger rod is reduced.
Preferably, a rubber cushion block is arranged at the bottom of the mounting cavity, and the end part of the plunger rod is propped against the rubber cushion block and connected with the rubber cushion block.
Through the technical scheme, the rubber cushion blocks buffer the plunger rod which tells to move, so that the damage of the plunger rod is reduced.
Preferably, one end of the plunger rod, which is positioned in the mounting cavity, is also sleeved with a wear-resistant ring, and the wear-resistant ring is positioned on one side, away from the mounting hole, of the rubber gasket.
Through above-mentioned technical scheme, the setting of wear ring can restrict the position of plunger rod tip on the one hand, makes its installation more stable in the installation cavity, and on the other hand reduces its wearing and tearing.
Preferably, the plunger head comprises a plug body and a plug sleeve, the plug sleeve comprises a sleeve cap and a sleeve body, the sleeve body is connected with the plug body in a threaded mode, the mounting cavity is formed in the sleeve body, and the mounting hole is formed in the sleeve cap.
Through the technical scheme, during installation, the plunger rod can be firstly arranged on the plug sleeve, and then the plug sleeve is screwed into the plug body, so that the assembly of the plunger rod and the plunger head is facilitated.
Preferably, the end of the plunger head, which is far away from the plunger rod, is provided with a connecting hole.
Through above-mentioned technical scheme, power part can be connected with the plunger head through the connecting hole.
A second object of the present utility model is to provide a high pressure pump head.
The high-pressure pump head comprises a plunger part and a valve body part, wherein the plunger part comprises a plunger mounting head and the high-pressure pump plunger, a plunger cavity is arranged in the plunger mounting head, a plunger hole for the plunger rod to penetrate is arranged in the plunger cavity, the diameter of the plunger hole is larger than that of the plunger rod,
the valve body part comprises a valve body mounting head, a one-way valve arranged in the valve body mounting head and a liquid inlet valve arranged on the valve body mounting head, wherein the liquid inlet valve is arranged at one end of the one-way valve far away from the valve body mounting head, one end of the liquid inlet valve far away from the one-way valve is butted with the plunger hole, a liquid inlet hole for the plunger rod to penetrate is arranged in the liquid inlet valve, the liquid inlet hole is communicated with the one-way valve, and the liquid inlet hole and the plunger hole are coaxially arranged.
Through the technical scheme, the plunger of the high-pressure pump is arranged in the plunger cavity, the plunger rod passes through the plunger hole to be matched with the liquid inlet hole in the liquid inlet valve, and the plunger rod moves up and down in the liquid inlet hole, so that the volume of the liquid inlet hole is changed; when the plunger rod moves upwards, liquid in the one-way valve flows into the liquid inlet hole, and when the plunger rod moves downwards, the liquid in the liquid inlet hole is rapidly extruded to be discharged from the liquid outlet of the one-way valve; here, the plunger rod has a certain elastic displacement allowance in the circumferential direction, so that the abrasion of the plunger rod can be reduced during high-speed movement, and the rigid contact fracture of the plunger rod is prevented.
Preferably, a Y-shaped sealing ring is arranged in the plunger hole, and an opening of the sealing ring faces the liquid inlet valve.
Through above-mentioned technical scheme, Y type sealing washer plays the effect of stability to the plunger rod is further, simultaneously, can effectively prevent that liquid from getting into the plunger chamber.
Preferably, a guide sleeve is further arranged on the valve body mounting head and located at the plunger cavity, the guide sleeve is communicated with the plunger hole and the liquid inlet, and the plunger rod penetrates through the guide sleeve.
Through the technical scheme, the plunger rod can move more stably due to the arrangement of the guide sleeve.
Preferably, one end of the guide sleeve, which is close to the plunger mounting head, is provided with a graphite ring, one end of the guide sleeve, which is far away from the plunger mounting head, is provided with a water blocking ring, and the plunger rod penetrates through the graphite ring and the water blocking ring.
Through the technical scheme, the friction loss of the plunger rod can be reduced due to the arrangement of the graphite ring, so that the plunger rod moves up and down more smoothly, and noise is reduced; the water blocking ring can prevent liquid from flowing into the guide sleeve.
The technical effects of the utility model are mainly as follows:
1. the plunger rod has a certain circumferential elastic displacement allowance, so that the abrasion of the plunger rod can be reduced during high-speed movement, and the rigid contact fracture of the plunger rod is prevented;
2. when the plunger rod moves at a high speed, the movement is stable, and the noise is low;
3. the plunger rod is convenient to install and replace.
Drawings
FIG. 1 is a schematic diagram of a first embodiment;
FIG. 2 is a schematic cross-sectional view of the first embodiment;
FIG. 3 is a schematic diagram of a second embodiment;
fig. 4 is a schematic cross-sectional structure of the second embodiment.
Reference numerals: 1. a plunger rod; 2. a plunger head; 3. a mounting cavity; 4. a mounting hole; 5. a rubber gasket; 6. a rubber cushion block; 7. a wear ring; 8. a plug body; 9. a plug sleeve; 10. a cap is sleeved; 11. a sleeve body; 12. a connection hole; 13. a plunger portion; 14. a valve body; 15. a plunger mounting head; 16. a high pressure pump plunger; 17. a plunger cavity; 18. a plunger hole; 19. a valve body mounting head; 20. a one-way valve; 21. a liquid inlet valve; 22. a liquid inlet hole; 23. a Y-shaped sealing ring; 24. a guide sleeve; 25. a graphite ring; 26. a water blocking ring; 27. a liquid inlet; 28. and a liquid outlet.
Detailed Description
The following detailed description of the utility model is provided in connection with the accompanying drawings to facilitate understanding and grasping of the technical scheme of the utility model.
In a first embodiment, a high pressure pump plunger 16 structure:
a high pressure pump plunger 16 structure as shown in fig. 1 and 2 comprises a plunger head 2 and a plunger rod 1, wherein a connecting hole 12 is formed at the end of the plunger head 2 away from the plunger rod 1. The plunger head 2 can be connected to the power unit through the connection hole 12. The plunger head 2 comprises a plug body 8 and a plug sleeve 9; the plug sleeve 9 comprises a sleeve cap 10 and a sleeve body 11, and the sleeve body 11 is connected with the plug body 8 in a threaded manner. The sleeve body 11 is provided with a mounting cavity 3, and the sleeve cap 10 is provided with a mounting hole 4. The mounting hole 4 is in clearance fit with the plunger rod 1, the plunger rod 1 is sleeved with a rubber gasket 5, the rubber gasket 5 is in tight fit with the plunger rod 1, and the outer side of the rubber gasket 5 abuts against the inner wall of the mounting cavity 3.
Wherein, the bottom of installation cavity 3 is equipped with rubber cushion 6, and the tip of plunger rod 1 supports in rubber cushion 6 and is connected. The plunger rod 1 is located the one end of installation cavity 3 still overlaps and is equipped with wear ring 7, and wear ring 7 is located the one side of rubber packing ring 5 far away from mounting hole 4.
A certain gap exists between the mounting hole 4 and the plunger rod 1, and when a certain deviation exists between the plunger rod 1 and the matched hole, the position can be finely adjusted through the gap; meanwhile, when the plunger rod 1 moves, the rubber gasket 5 can ensure that the plunger rod 1 is positioned at the axial position, so that the movement precision of the plunger rod 1 is ensured; if the plunger rod 1 moves and deflects, the rubber gasket 5 can also deform, so that the position of the plunger rod 1 is adjusted, and the plunger rod 1 is prevented from moving and breaking; meanwhile, the plunger rod 1 is prevented from being in rigid contact with the hole site all the time when moving at a high speed, and abrasion of the plunger rod 1 is reduced.
In a second embodiment, a high pressure pump head:
the high-pressure pump head shown in fig. 3 and 4 includes a plunger portion 13 and a valve body portion 14, and the plunger portion 13 includes a plunger mounting head 15, and a high-pressure pump plunger 16 in the first embodiment. The plunger mounting head 15 is internally provided with a plunger cavity 17, a plunger hole 18 for the plunger rod 1 to penetrate is arranged in the plunger cavity 17, and the diameter of the plunger hole 18 is larger than that of the plunger rod 1. A Y-shaped sealing ring 23 is arranged in the plunger hole 18, and the opening of the sealing ring faces downwards.
The valve body 14 includes a valve body mounting head 19, a check valve 20 provided in the valve body mounting head 19, and a liquid inlet valve 21 provided on the valve body mounting head 19. The valve body mounting head 19 is provided with a liquid inlet 27 and a liquid outlet 28 which are communicated with the one-way valve 20. The liquid inlet valve 21 is located the one end that the check valve 20 kept away from valve body installation head 19, and the one end that the check valve 20 was kept away from to the liquid inlet valve 21 is butt joint in plunger hole 18, is equipped with the feed liquor hole 22 that supplies plunger rod 1 to wear to establish in the feed liquor valve 21, and feed liquor hole 22 communicates with the check valve 20, and feed liquor hole 22 and plunger hole 18 coaxial setting.
In addition, a guide sleeve 24 is further arranged on the valve body mounting head 19 and located at the plunger cavity 17, the guide sleeve 24 is communicated with the plunger hole 18 and the liquid inlet 22, and the plunger rod 1 is arranged through the guide sleeve 24. Here, the one end that the uide bushing 24 is close to plunger installation head 15 is equipped with graphite ring 25, the one end that the uide bushing 24 is kept away from plunger installation head 15 is equipped with the choke ring 26, plunger rod 1 wears to locate graphite ring 25 and choke ring 26.
The high-pressure pump plunger 16 is arranged in the plunger cavity 17, the plunger rod 1 passes through the plunger hole 18 to be matched with the liquid inlet hole 22 in the liquid inlet valve 21, and the plunger rod 1 moves up and down in the liquid inlet hole 22, so that the volume of the liquid inlet hole 22 is changed; when the plunger rod 1 moves upwards, the liquid in the liquid inlet 27 flows into the liquid inlet hole 22 from the one-way valve 20, and when the plunger rod 1 moves downwards, the liquid in the liquid inlet hole 22 is rapidly extruded from the one-way valve 20 and discharged through the liquid outlet 28.
Of course, the above is only a typical example of the utility model, and other embodiments of the utility model are also possible, and all technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of the utility model claimed.
Claims (9)
1. The utility model provides a high-pressure pump plunger structure, includes plunger head (2) and plunger rod (1), be equipped with in plunger head (2) and supply installation cavity (3) of plunger rod (1) installation, still be equipped with on plunger head (2) and supply mounting hole (4) that plunger rod (1) passed, characterized by: the mounting hole (4) is in clearance fit with the plunger rod (1), a rubber gasket (5) is sleeved on the plunger rod (1), the rubber gasket (5) is in tight fit with the plunger rod (1), and the outer side of the rubber gasket (5) abuts against the inner wall of the mounting cavity (3).
2. The high pressure pump plunger structure according to claim 1, characterized in that: the bottom of the installation cavity (3) is provided with a rubber cushion block (6), and the end part of the plunger rod (1) is propped against the rubber cushion block (6) and connected.
3. The high pressure pump plunger structure according to claim 1, characterized in that: one end of the plunger rod (1) positioned in the mounting cavity (3) is further sleeved with a wear-resistant ring (7), and the wear-resistant ring (7) is positioned on one side of the rubber gasket (5) away from the mounting hole (4).
4. A high pressure pump plunger structure as claimed in claim 3, wherein: plunger head (2) are including cock body (8) and cock sleeve (9), cock sleeve (9) are including cover cap (10) and cover body (11), cover body (11) threaded connection is in cock body (8), install cavity (3) and locate on cover body (11), install hole (4) and locate on cover cap (10).
5. The high pressure pump plunger structure according to claim 1, characterized in that: one end of the plunger head (2) far away from the plunger rod (1) is provided with a connecting hole (12).
6. A high pressure pump head comprising a plunger portion (13) and a valve body portion (14), characterized in that: the plunger part (13) comprises a plunger mounting head (15) and the high-pressure pump plunger according to any one of claims 1-5, a plunger cavity (17) is arranged in the plunger mounting head (15), a plunger hole (18) for the plunger rod (1) to penetrate is arranged in the plunger cavity (17), the diameter of the plunger hole (18) is larger than that of the plunger rod (1),
the valve body part (14) comprises a valve body mounting head (19), a one-way valve (20) arranged in the valve body mounting head (19) and a liquid inlet valve (21) arranged on the valve body mounting head (19), wherein the liquid inlet valve (21) is positioned at one end of the one-way valve (20) far away from the valve body mounting head (19), one end of the liquid inlet valve (21) far away from the one-way valve (20) is abutted to the plunger hole (18), a liquid inlet hole (22) for the plunger rod (1) to penetrate is arranged in the liquid inlet valve (21), the liquid inlet hole (22) is communicated with the one-way valve (20), and the liquid inlet hole (22) and the plunger hole (18) are coaxially arranged.
7. The high pressure pump head of claim 6, wherein: a Y-shaped sealing ring (23) is arranged in the plunger hole (18), and the opening of the sealing ring faces to the liquid inlet valve (21).
8. The high pressure pump head of claim 6, wherein: the valve body mounting head (19) is further provided with a guide sleeve (24) positioned at the plunger cavity (17), the guide sleeve (24) is communicated with the plunger hole (18) and the liquid inlet (22), and the plunger rod (1) penetrates through the guide sleeve (24).
9. The high pressure pump head of claim 8, wherein: one end of the guide sleeve (24) close to the plunger mounting head (15) is provided with a graphite ring (25), one end of the guide sleeve (24) far away from the plunger mounting head (15) is provided with a water blocking ring (26), and the plunger rod (1) penetrates through the graphite ring (25) and the water blocking ring (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223613493.5U CN218953543U (en) | 2022-12-31 | 2022-12-31 | High-pressure pump head and plunger structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223613493.5U CN218953543U (en) | 2022-12-31 | 2022-12-31 | High-pressure pump head and plunger structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218953543U true CN218953543U (en) | 2023-05-02 |
Family
ID=86134711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223613493.5U Active CN218953543U (en) | 2022-12-31 | 2022-12-31 | High-pressure pump head and plunger structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218953543U (en) |
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2022
- 2022-12-31 CN CN202223613493.5U patent/CN218953543U/en active Active
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