High-pressure plunger pump

Abstract

The utility model provides a high-pressure plunger pump, which belongs to the technical field of plunger pumps and comprises a crankcase, a pump head is arranged in the crankcase, a connecting pump body is arranged on one side of the crankcase, a plurality of plunger channels are distributed in the middle of the connecting pump body, the output end of the pump head is hinged with a plurality of piston plungers, and the piston plungers are movably connected in the plunger channels. A water inlet valve body is arranged on one side of the connecting pump body, upper circulation grooves are formed in the tops of the inner walls of the water inlet valve body, upper corrosion-resistant sealing one-way plugs are arranged at the bottoms of the inner walls of the upper circulation grooves, lower corrosion-resistant sealing one-way plugs are arranged at the bottoms of the inner walls of the water inlet valve body, and lower corrosion-resistant sealing one-way plugs are arranged at the bottoms of the inner walls of the upper circulation grooves. According to the high-pressure plunger pump provided by the utility model, the first reversing valve and the second reversing valve are used for switching liquid to flow to the other filtering cavity for filtering treatment, and the filtering cover after filtering is detached and cleaned under the condition that the flow is not cut off, so that the normal flow speed of the liquid is ensured, and the flowing of the liquid tends to be stable.

Description

Technical Field

[0001] This utility model belongs to the field of plunger pump technology, and specifically relates to a high-pressure plunger pump. Background Technology

[0002] Existing plunger pumps suffer from several drawbacks during operation. Small particles and impurities can mix with the liquid and enter the pump body, causing blockages and affecting liquid transport while increasing maintenance costs. The "small-volume high-pressure plunger pump" disclosed in application number "CN202320682613.2" represents a mature technology. Hydraulic oil enters the inlet through a filter screen, then the first annular groove, and finally enters the pump chamber through the circular holes of the perforated baffles connected by the surrounding semi-circular grooves. However, this device has several drawbacks: replacing the filter screen requires stopping the pump and disassembling it, affecting liquid transport efficiency. Furthermore, some liquids contain corrosive substances that can corrode internal parts, affecting the sealing of the pump plug and valves, leading to leakage and shortening the service life of pump components. Utility Model Content

[0003] The purpose of this utility model is to provide a high-pressure plunger pump, which aims to solve the problems in the prior art where the pump body needs to be stopped and the filter screen needs to be disassembled when the filter screen needs to be replaced, which affects the liquid transportation efficiency. At the same time, some liquids contain corrosive substances that can easily corrode internal parts, affecting the sealing effect of the pump plunger and pump valve, leading to liquid leakage and shortening the service life of pump body parts.

[0004] To achieve the above objectives, this utility model provides the following technical solution: It includes a crankcase, a pump head is provided inside the crankcase, a connecting pump body is provided on one side of the crankcase, a plurality of piston channels are distributed in the middle of the connecting pump body, a plurality of pistons are hinged to the output end of the pump head, the pistons are movably connected within the piston channels, a water inlet valve body is provided on one side of the connecting pump body, an upper flow groove is provided on the top of the inner wall of the water inlet valve body, an upper corrosion-resistant sealing one-way plug is provided on the bottom of the inner wall of the upper flow groove, a lower corrosion-resistant sealing one-way plug is provided on the bottom of the inner wall of the water inlet valve body, and a lower corrosion-resistant sealing one-way plug is provided on the bottom of the inner wall of the upper flow groove.

[0005] In one embodiment of the high-pressure plunger pump of this utility model, a movable sleeve is provided in the middle of the inner wall of the inlet valve body and the top of the inner wall of the upper flow groove. A telescopic rod is movably connected inside the movable sleeve. A spherical closing block is provided at the bottom end of the telescopic rod. A return spring is provided on the outer wall of the telescopic rod. A sealing plate is provided at the bottom of the telescopic rod. The sealing plate is movably connected inside the movable sleeve.

[0006] In this design, when the piston rod moves within the piston channel to perform extraction, the pressure causes two spherical closed blocks in different positions to be pushed open by the upper and lower corrosion-resistant sealing one-way plugs. The sealing plate moves within the movable sleeve and compresses the return spring. After each extraction, the return spring resets, and the sealing plate discharges the liquid from the movable sleeve, keeping it dry and preventing the extracted corrosive liquid from entering the movable sleeve cavity, which could lead to corrosion of the return spring and telescopic rod.

[0007] In one embodiment of the high-pressure plunger pump of this utility model, one end of the piston plunger is provided with an acid-resistant ceramic shell.

[0008] In this design, the piston rod is protected by an acid-resistant ceramic shell as it moves, preventing corrosion and subsequent liquid leakage.

[0009] In one embodiment of the high-pressure plunger pump of this utility model, the bottom of the inlet valve body is provided with a mounting base, the bottom of the mounting base is provided with a filter shell, a first reversing valve is provided on one side of the filter shell, a second reversing valve is provided on the other side of the filter shell, filter chambers are opened on both sides of the inner wall of the filter shell, and slots are opened on both sides of the filter shell, and a filter cover is slidably connected in the slots.

[0010] In this solution, the first reversing valve switches the inlet end, allowing the liquid to enter different filter chambers. At this time, the filter cover of the flowing liquid filters impurities in the liquid. The second reversing valve switches the flow end, and the filtered liquid flows into the inlet valve body. When it is necessary to clean the dirty filter cover, the first and second reversing valves switch the liquid flow to another filter chamber for filtration. The filtered filter cover is then disassembled and cleaned. Cleaning is carried out without interrupting the flow to ensure the normal flow rate of the liquid.

[0011] In one embodiment of the high-pressure plunger pump of this utility model, a first positioning hole is provided at the four corners of the slot, and a second positioning hole is provided at the four corners of the filter cover. The first positioning hole and the second positioning hole are connected by screw threads.

[0012] In this solution, when cleaning the filter cover, the screws in the first and second positioning holes are removed, and the filter cover is removed from the slot.

[0013] In one embodiment of the high-pressure plunger pump of this utility model, the inner wall of the slot is provided with a corrosion-resistant sealing ring.

[0014] In this solution, after the filter cover is installed, the corrosion-resistant sealing ring seals the connection between the slot and the filter cover to prevent liquid leakage.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1) When the sealing plate moves inside the movable sleeve, it squeezes the return spring. After each suction, the return spring returns to its original position, and the sealing plate discharges the liquid inside the movable sleeve, keeping the movable sleeve dry and preventing the suctioned corrosive liquid from entering the movable sleeve cavity, which would cause corrosion of the return spring and telescopic rod. When the piston moves, the acid-resistant ceramic shell protects the piston to prevent corrosion inside the piston from causing liquid leakage and improve the service life of the equipment.

[0017] 2) By switching the inlet end through the first reversing valve, the liquid enters different filter chambers. At this time, the filter cover of the flowing liquid filters impurities in the liquid. The second reversing valve switches the flow end, and the filtered liquid flows into the inlet valve body. When it is necessary to clean the dirty filter cover, the first reversing valve and the second reversing valve switch the liquid flow to another filter chamber for filtration. The filtered filter cover is disassembled and cleaned. The cleaning is carried out without interrupting the flow to ensure the normal flow rate of the liquid and make the liquid flow tend to be stable. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the water inlet valve body structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the filter shell structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the movable sleeve structure of this utility model.

[0023] In the diagram: 1. Crankcase; 2. Pump head; 3. Connecting pump body; 4. Piston plunger channel; 5. Piston plunger; 6. Inlet valve body; 7. Upper flow groove; 8. Upper corrosion-resistant sealing one-way plug; 9. Lower corrosion-resistant sealing one-way plug; 10. Movable sleeve; 11. Telescopic rod; 12. Spherical closing block; 13. Return spring; 14. Sealing plate; 15. Acid-resistant ceramic shell; 16. Mounting base; 17. Filter shell; 18. First reversing valve; 19. Second reversing valve; 20. Filter chamber; 21. Slot; 22. Filter cover; 23. First positioning hole; 24. Second positioning hole; 25. Corrosion-resistant sealing ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4 The present invention provides the following technical solution: a high-pressure plunger pump, including a crankcase 1, a pump head 2 inside the crankcase 1, a connecting pump body 3 on one side of the crankcase 1, a plurality of plunger channels 4 distributed in the middle of the connecting pump body 3, a plurality of piston plungers 5 hinged to the output end of the pump head 2, the piston plungers 5 being movably connected in the plunger channels 4, an inlet valve body 6 on one side of the connecting pump body 3, an upper flow groove 7 being opened on the top of the inner wall of the inlet valve body 6, an upper corrosion-resistant sealing one-way plug 8 being provided on the bottom of the inner wall of the upper flow groove 7, a lower corrosion-resistant sealing one-way plug 9 being provided on the bottom of the inner wall of the inlet valve body 6, and a lower corrosion-resistant sealing one-way plug 9 being provided on the bottom of the inner wall of the upper flow groove 7.

[0026] In a specific embodiment of a high-pressure plunger pump, please refer to Figure 4 The inner wall of the inlet valve body 6 is provided with a movable sleeve 10 at the middle and the top of the inner wall of the upper flow groove 7. A telescopic rod 11 is movably connected inside the movable sleeve 10. A spherical closing block 12 is provided at the bottom of the telescopic rod 11. A return spring 13 is provided on the outer wall of the telescopic rod 11. A sealing plate 14 is provided at the bottom of the telescopic rod 11. The sealing plate 14 is movably connected inside the movable sleeve 10.

[0027] Please see Figure 4 When the piston rod 5 is in the piston channel, it performs the extraction activity. At this time, due to the pressure, the two spherical closing blocks 12 in different positions are pushed open by the upper corrosion-resistant sealing one-way plug 8 and the lower corrosion-resistant sealing one-way plug 9. The sealing plate 14 moves in the movable sleeve 10 and squeezes the return spring 13. After each extraction, the return spring 13 returns to its original position. The sealing plate 14 discharges the liquid in the movable sleeve 10, keeping the movable sleeve 10 dry and preventing the extracted corrosive liquid from entering the cavity of the movable sleeve 10, which would cause the return spring 13 and the telescopic rod 11 to be corroded.

[0028] In a specific embodiment of a high-pressure plunger pump, please refer to Figure 1 The piston plunger 5 has an acid-resistant ceramic shell 15 at one end.

[0029] Please see Figure 1 When the piston plunger 5 moves, the acid-resistant ceramic shell 15 protects the piston plunger 5 to prevent it from being corroded and causing liquid leakage.

[0030] In a specific embodiment of a high-pressure plunger pump, please refer to Figure 1 Figure 3 The bottom of the inlet valve body 6 is provided with a mounting base 16, the bottom of the mounting base 16 is provided with a filter shell 17, a first reversing valve 18 is provided on one side of the filter shell 17, a second reversing valve 19 is provided on the other side of the filter shell 17, filter chambers 20 are opened on both sides of the inner wall of the filter shell 17, and slots 21 are opened on both sides of the filter shell 17, and a filter cover 22 is slidably connected in the slots 21.

[0031] Please see Figure 1 Figure 3 The first reversing valve 18 switches the inlet end, allowing the liquid to enter different filter chambers 20. At this time, the filter cover 22 of the flowing liquid filters impurities in the liquid. The second reversing valve 19 switches the flow end, and the filtered liquid flows into the inlet valve body 6. When it is necessary to clean the dirty filter cover 22, the first reversing valve 18 and the second reversing valve 19 switch the liquid flow to another filter chamber 20 for filtration. The filtered filter cover 22 is disassembled and cleaned while the flow is continuous to ensure the normal flow rate of the liquid.

[0032] In a specific embodiment of a high-pressure plunger pump, please refer to Figure 1 Figure 3 The slot 21 has a first positioning hole 23 at each of its four corners, and the filter cover 22 has a second positioning hole 24 at each of its four corners. The first positioning hole 23 and the second positioning hole 24 are connected by screw threads.

[0033] Please see Figure 1 Figure 3 When cleaning the filter cover 22, remove the screws in the first positioning hole 23 and the second positioning hole 24, and remove the filter cover 22 from the slot 21.

[0034] In a specific embodiment of a high-pressure plunger pump, please refer to Figure 3 The inner wall of the groove 21 is provided with a corrosion-resistant sealing ring 25.

[0035] Please see Figure 3 After the filter cover 22 is installed, the corrosion-resistant sealing ring 25 seals the connection between the slot 21 and the filter cover 22 to prevent liquid leakage.

[0036] This utility model provides a high-pressure plunger pump, specifically used as follows: The motor inside the pump head 2 rotates the deflector rod, driving the piston plunger 5 in the piston channel, causing piston movement. The resulting suction force pushes open the two spherical closed blocks 12 at different positions from the upper corrosion-resistant sealing one-way plug 8 and the lower corrosion-resistant sealing one-way plug 9. The sealing plate 14 moves within the movable sleeve 10 and presses the return spring 13. After each suction, the return spring 13 returns to its original position, and the sealing plate 14 discharges liquid from the movable sleeve 10, keeping the movable sleeve 10 dry and preventing corrosive liquid from entering the cavity of the movable sleeve 10, which could lead to corrosion of the return spring 13 and the telescopic rod 11. At this time, the piston plunger 5 is protected by the acid-resistant ceramic shell 15 to prevent corrosion inside the piston plunger 5 from causing liquid leakage. The first reversing valve 18 switches the water inlet end so that the liquid enters different filter chambers 20. At this time, the filter cover 22 of the flowing liquid filters impurities in the liquid. The second reversing valve 19 switches the flow end, and the filtered liquid flows into the water inlet valve body 6. When it is necessary to clean the dirty filter cover 22, the first reversing valve 18 and the second reversing valve 19 switch the liquid flow to another filter chamber 20 for filtration. The filtered filter cover 22 is disassembled and cleaned. The cleaning is carried out without interrupting the flow to ensure the normal flow rate of the liquid and make the liquid flow tend to be stable.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A high-pressure plunger pump, comprising a crankcase (1), characterized in that: The crankcase (1) is equipped with a pump head (2), and a connecting pump body (3) is provided on one side of the crankcase (1). Several piston channels (4) are partially arranged in the middle of the connecting pump body (3). Several pistons (5) are hinged to the output end of the pump head (2). The pistons (5) are movably connected in the piston channels (4). A water inlet valve body (6) is provided on one side of the connecting pump body (3). An upper flow groove (7) is provided on the top of the inner wall of the water inlet valve body (6). An upper corrosion-resistant sealing one-way plug (8) is provided on the bottom of the inner wall of the upper flow groove (7). A lower corrosion-resistant sealing one-way plug (9) is provided on the bottom of the inner wall of the water inlet valve body (6). A lower corrosion-resistant sealing one-way plug (9) is provided on the bottom of the inner wall of the upper flow groove (7).

2. The high-pressure plunger pump according to claim 1, characterized in that: The middle of the inner wall of the inlet valve body (6) and the top of the inner wall of the upper flow groove (7) are provided with a movable sleeve (10). A telescopic rod (11) is movably connected inside the movable sleeve (10). A spherical closing block (12) is provided at the bottom of the telescopic rod (11). A return spring (13) is provided on the outer wall of the telescopic rod (11). A sealing plate (14) is provided at the bottom of the telescopic rod (11). The sealing plate (14) is movably connected inside the movable sleeve (10).

3. A high-pressure plunger pump according to claim 1, characterized in that: One end of the piston rod (5) is provided with an acid-resistant ceramic shell (15).

4. A high-pressure plunger pump according to claim 1, characterized in that: The bottom of the water inlet valve body (6) is provided with a mounting base (16), the bottom of the mounting base (16) is provided with a filter shell (17), a first reversing valve (18) is provided on one side of the filter shell (17), a second reversing valve (19) is provided on the other side of the filter shell (17), filter chambers (20) are opened on both sides of the inner wall of the filter shell (17), and slots (21) are opened on both sides of the filter shell (17), and a filter cover (22) is slidably connected in the slots (21).

5. A high-pressure plunger pump according to claim 4, characterized in that: The slot (21) has a first positioning hole (23) at each of its four corners, and the filter cover (22) has a second positioning hole (24) at each of its four corners. The first positioning hole (23) and the second positioning hole (24) are connected by screw threads.

6. A high-pressure plunger pump according to claim 4, characterized in that: The inner wall of the slot (21) is provided with a corrosion-resistant sealing ring (25).

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