Oil seal plunger head for three-cylinder plunger pump

Abstract

The utility model provides an oil seal plunger head for a three-cylinder plunger pump, belongs to the technical field of plunger head manufacturing, and solves the problems that the conventional oil seal plunger head is narrow in mounting position and general position space, high in fluid flow speed and easy to cause cavitation erosion, the conventional plunger head is more complicated to replace, the cost is low, and the like. And normal operation of the high-pressure plunger pump is easily affected. An oil seal plunger head for a three-cylinder plunger pump comprises a plunger head body and a plunger connecting rod connected with the plunger head body, the plunger head body comprises a connecting hole formed in the top, connecting threads are formed in the hole wall of the top of the connecting hole, one end of the plunger connecting rod is in threaded connection with the connecting threads, and the other end of the plunger connecting rod is in threaded connection with the plunger connecting rod. And a limiting assembly which is in limiting fit with one end of the connecting rod is arranged in the plunger head main body. The plunger has the advantages that the plunger head and the plunger push rod can be quickly disassembled and assembled, the fixed connection state can be further improved when the plunger head and the plunger push rod are fixedly connected, and the connection strength is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of plunger head manufacturing, and relates to an oil seal plunger head, in particular to an oil seal plunger head for a three-cylinder plunger pump. Background Technique

[0002] With the economic development of our country, the high-pressure hydraulic equipment market has been continuously released, and the market demand for high-pressure plunger pumps has increased accordingly. Since the three-cylinder plunger pump belongs to high-end hydraulic equipment, its high price has discouraged many users. As the main pressure-bearing component, the manufacturing cost of the oil seal plunger head accounts for a large part of the plunger pump. However, the installation position of the oil seal plunger head is usually narrow in space and the fluid flow rate is fast, which makes it easier for the plunger head to form cavitation. Moreover, the replacement of the existing plunger head is relatively cumbersome and easily affects the normal operation of the high-pressure plunger pump. Therefore, there is an urgent need for an oil seal plunger head for a three-cylinder plunger pump to solve the above problems. Summary of the Utility Model

[0003] The purpose of the utility model is to address the above problems in the existing technology and propose an oil seal plunger head for a three-cylinder plunger pump. The technical problem to be solved by this utility model is: how to achieve the quick disassembly and assembly ability between the plunger head and the plunger push rod, and when they are fixedly connected, further improve the fixed connection state and enhance the connection strength.

[0004] The purpose of the utility model can be achieved by the following technical solutions:

[0005] An oil seal plunger head for a three-cylinder plunger pump includes a plunger head body and a plunger connecting rod connected to the plunger head body. The plunger head body includes a connection hole opened at the top, and connection threads are provided on the top hole wall of the connection hole. One end of the plunger connecting rod is threadedly connected to the connection threads, and a limiting component for limiting and cooperating with one end of the connecting rod is arranged in the plunger head body.

[0006] The working principle of the utility model is: the plunger connecting rod can be threadedly connected to the plunger head body to achieve the preliminary fixed connection between the two. Then, the fixed state between the two is limited by the limiting component, further improving the stable state of the fixation, enhancing the fixation strength, improving the use effect, and also achieving the ability of quick disassembly and assembly. When the plunger head body is severely worn, the plunger head body can be replaced, thereby increasing the service life of the three-cylinder plunger pump.

[0007] The limiting component includes a plurality of guiding chutes opened in the plunger head body, and guiding sliders slidably connected in the plurality of guiding chutes. A plurality of limiting grooves are opened at one end of the plunger connecting rod, and one end of each of the plurality of guiding sliders is inserted and cooperated with the corresponding limiting groove.

[0008] With the above structure, by moving the guiding slider, the snap-fit state between the guiding slider and the limiting groove can be changed, which facilitates the subsequent components to quickly adjust the limiting state.

[0009] A pair of spring grooves are provided in each of the plurality of guiding chutes, and a pair of pushing blocks are fixed on each of the plurality of guiding sliders. Each pair of pushing blocks is slidably engaged with a corresponding pair of spring grooves, and a return spring is fixed between the bottom of each pair of pushing blocks and the bottom of the corresponding pair of spring grooves.

[0010] With the above structure, the pushing block can be retracted by the return spring, so that the guiding slider is always in a disengaged state from the limiting groove without being affected by the outside world, which facilitates the disassembly of the plunger head body.

[0011] A plurality of pushing blocks are vertically slidably connected in the plunger head body. The bottoms of the plurality of pushing blocks are all in the shape of an inclined triangle, and the other ends of the plurality of guiding sliders are all in the shape of an inclined triangle. The inclined surfaces of the plurality of pushing blocks are mutually attached to the inclined surfaces of the corresponding guiding sliders.

[0012] With the above structure, by mutually attaching the inclined surface of the pushing block to the inclined surface of the corresponding guiding slider, and then pressing down the pushing block, the pushing block continuously squeezes the guiding slider, so that one end of the guiding slider completes the snap-fit with the corresponding limiting groove, achieving the ability to complete the limiting and fixing state.

[0013] A plurality of screw rods are rotatably connected in the plunger head body. The plurality of screw rods are all threadedly connected to the corresponding pushing blocks, and screw driver slots are provided on the top surfaces of the plurality of screw rods.

[0014] With the above structure, by engaging the screwdriver with the screw driver slot to drive the screw rod to rotate, the pushing block can be moved up and down through the threaded fit with the screw rod, so that the operator can quickly complete the adjustment of the pushing action of the pushing block, further improving the operability of the operator and the overall disassembly and assembly efficiency.

[0015] Compared with the prior art, the oil seal plunger head of the present three-cylinder plunger pump has the following advantages:

[0016] 1. By threadedly connecting the plunger connecting rod with the plunger head body, the pre-fixed connection between the two is realized, and then the fixed state between the two is limited by the limiting component, further improving the stable state of the fixation, enhancing the fixing strength, and improving the use effect.

[0017] 2. By realizing the ability to quickly disassemble and assemble the plunger connecting rod and the plunger head body, when the plunger head body is severely worn, the plunger head body can be replaced, improving the service life of the three-cylinder plunger pump. Description of the Drawings

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram inside the plunger head body of the utility model.

[0020] Figure 3 It is a structural schematic diagram inside the plunger head body from a top-down perspective of the utility model.

[0021] In the figure, 1. plunger head body; 2. plunger connecting rod; 3. connecting hole; 4. connecting thread; 5. guiding chute; 6. guiding slider; 7. limiting groove; 8. spring groove; 9. pushing block; 10. return spring; 11. squeezing block; 12. screw rod; 13. screwdriver blade opening. Detailed implementation manners

[0022] The following are specific embodiments of the utility model and in combination with the attached drawings, the technical solutions of the utility model are further described, but the utility model is not limited to these embodiments.

[0023] As Figures 1-3 shown, an oil seal plunger head for a three-cylinder plunger pump includes a plunger head body 1 and a plunger connecting rod 2 connected to the plunger head body 1. The plunger head body 1 includes a connecting hole 3 opened at the top, and a connecting thread 4 is provided on the top hole wall of the connecting hole 3. One end of the plunger connecting rod 2 is threadedly connected to the connecting thread 4, and a limiting component for limit cooperation with one end of the connecting rod is arranged inside the plunger head body 1.

[0024] The threaded connection between the plunger connecting rod 2 and the plunger head body 1 can be used to achieve the pre-fixed connection between the two. Then, the limiting component is used to limit the fixed state between the two, further improving the stable state of the fixation, enhancing the fixation strength, improving the use effect, and also realizing the ability of quick disassembly and assembly. When the plunger head body 1 is severely worn, the plunger head body 1 can be replaced, improving the service life of the three-cylinder plunger pump.

[0025] The limiting component includes a plurality of guiding chutes 5 opened inside the plunger head body 1, guiding sliders 6 slidably connected in the plurality of guiding chutes 5, and a plurality of limiting grooves 7 are opened at one end of the plunger connecting rod 2. One ends of the plurality of guiding sliders 6 are in snap-fit with the corresponding limiting grooves 7.

[0026] With the above structure, the change of the snap-fit state between the guiding slider 6 and the limiting groove 7 can be realized by the movement of the guiding slider 6, facilitating the ability to quickly adjust the limiting state in cooperation with subsequent components.

[0027] A pair of spring grooves 8 are respectively formed in each of the plurality of guiding sliding grooves 5, and a pair of pushing blocks 9 are respectively fixed on each of the plurality of guiding sliding blocks 6. Each pair of pushing blocks 9 is in sliding fit with the corresponding pair of spring grooves 8, and a return spring 10 is fixed between the bottom of each pair of pushing blocks 9 and the bottom of the corresponding pair of spring grooves 8.

[0028] With the above structure, the pushing block 9 can be retracted by the return spring 10, so that the guiding sliding block 6 is always in a disengaged state from the limiting groove 7 without being affected by the outside world, which can facilitate the disassembly of the plunger head main body 1.

[0029] A plurality of pushing blocks 11 are vertically and slidably connected in the plunger head main body 1. The bottoms of the plurality of pushing blocks 11 are all in the shape of an inclined triangle, and the other ends of the plurality of guiding sliding blocks 6 are all in the shape of an inclined triangle. The inclined surfaces of the plurality of pushing blocks 11 are mutually attached to the inclined surfaces of the corresponding guiding sliding blocks 6.

[0030] With the above structure, the inclined surfaces of the pushing blocks 11 can be mutually attached to the inclined surfaces of the corresponding guiding sliding blocks 6, and then by pressing down the pushing blocks 11, the pushing blocks 11 continuously press the guiding sliding blocks 6, so that one end of the guiding sliding block 6 completes the snap - fit with the corresponding limiting groove 7, achieving the ability to complete the limited fixed state.

[0031] A plurality of screw rods 12 are rotatably connected in the plunger head main body 1. The plurality of screw rods 12 are all in threaded connection with the corresponding pushing blocks 11, and screw driver slots 13 are formed on the top surfaces of the plurality of screw rods 12.

[0032] With the above structure, by engaging a screwdriver with the screw driver slot 13, the screw rod 12 can be driven to rotate, so that the pushing block 11 moves up and down through the threaded fit with the screw rod 12, enabling the personnel to quickly complete the adjustment of the pushing action of the pushing block 11, further improving the operability of the personnel and the overall disassembly and assembly efficiency.

[0033] The working principle of the present utility model: The plunger connecting rod 2 is threadedly connected with the connecting hole 3 to realize the pre - fixed connection between the plunger connecting rod 2 and the plunger head main body 1. By the personnel using a screwdriver to engage the screw driver slot 13, the screw rod 12 is driven to rotate, so that the pushing block 11 moves downward through the threaded fit with the screw rod 12. The inclined surfaces of the pushing block 11 are mutually attached to the inclined surfaces of the corresponding guiding sliding blocks 6, and then by pressing down the pushing block 11, the pushing block 11 continuously presses the guiding sliding blocks 6, so that one end of the guiding sliding block 6 completes the snap - fit with the corresponding limiting groove 7, limiting the fixed state between the plunger connecting rod 2 and the plunger head main body 1, further improving the stable state of the fixation, enhancing the fixing strength, improving the use effect, and also realizing the ability of quick disassembly and assembly. When the plunger head main body 1 is severely worn, the plunger head main body 1 can be replaced, improving the service life of the three - cylinder plunger pump.

[0034] In summary, by threadedly connecting the plunger connecting rod 2 and the plunger head body 1, the pre-fixed connection between the two is achieved. Then, the fixed state between the two is limited by the limiting component, further improving the stable state of the fixation, enhancing the fixing strength, improving the use effect, and also realizing the ability of quick disassembly and assembly. When the plunger head body 1 is severely worn, the plunger head body 1 can be replaced, thereby improving the service life of the three-cylinder plunger pump.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art of the present utility model can make various modifications or supplements to the described specific embodiments or use similar ways to substitute them, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. An oil seal plunger head for a three-cylinder plunger pump, comprising a plunger head body (1) and a plunger connecting rod (2) connected to the plunger head body (1), characterized in that, The plunger head body (1) includes a connection hole (3) opened at the top, and a connection thread (4) is provided on the top hole wall of the connection hole (3). One end of the plunger connecting rod (2) is threadedly connected to the connection thread (4), and a limiting component for limiting cooperation with one end of the connecting rod is arranged in the plunger head body (1).

2. The oil seal plunger head for a three-cylinder plunger pump according to claim 1, characterized in that, The limiting component includes a plurality of guiding chutes (5) opened in the plunger head body (1), and guiding sliders (6) slidably connected in the plurality of guiding chutes (5). A plurality of limiting grooves (7) are opened at one end of the plunger connecting rod (2), and one end of each of the plurality of guiding sliders (6) is in snap-fit with the corresponding limiting groove (7).

3. The oil seal plunger head for a three-cylinder plunger pump according to claim 2, characterized in that, A pair of spring grooves (8) are opened in each of the plurality of guiding chutes (5), a pair of pushing blocks (9) are fixed on each of the plurality of guiding sliders (6), each pair of pushing blocks (9) is slidably engaged with the corresponding pair of spring grooves (8), and a return spring (10) is fixed between the bottom of each pair of pushing blocks (9) and the bottom of the corresponding pair of spring grooves (8).

4. The oil seal plunger head for a three-cylinder plunger pump according to claim 2, characterized in that, A plurality of pushing blocks (11) are vertically slidably connected in the plunger head body (1). The bottoms of the plurality of pushing blocks (11) are all in the shape of an inclined triangle, and the other ends of the plurality of guiding sliders (6) are all in the shape of an inclined triangle. The inclined surfaces of the plurality of pushing blocks (11) are mutually attached to the inclined surfaces of the corresponding guiding sliders (6).

5. A gland plunger head for a three-cylinder plunger pump according to claim 4, characterized in that, A plurality of screw rods (12) are rotatably connected in the plunger head body (1). The plurality of screw rods (12) are all threadedly connected to the corresponding pushing blocks (11), and screw driver slots (13) are opened on the top surfaces of the plurality of screw rods (12).

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