Horizontal plunger pump capable of preventing eccentric wear of plunger cylinder

Abstract

The utility model relates to a horizontal plunger pump of preventing plunger cylinder eccentric wear, including power end, plunger cylinder, push -and -pull rod, push -and -pull rod sealing assembly, plunger, plunger seal ring, plunger pump front cover, plunger pump rear cover, plunger pump mounting seat, pump machine import valve A, pump machine import valve B, pump machine export valve A and pump machine export valve B are equipped with the anti -falling support for preventing push -and -pull rod from deviating from the center axis of itself, the one end of anti -falling support fixed connection plunger pump mounting seat, the other end of anti -falling support sliding sleeve joint push -and -pull rod, produce support force. The utility model has the advantages of: can effectively inhibit push -and -pull rod deviation, reduce the risk of plunger cylinder eccentric wear, sliding structure can run stably, and the bilateral / upper and lower arrangement enhanced structure has good adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of horizontal plunger pump technology, and particularly relates to a horizontal plunger pump that prevents uneven wear of the plunger cylinder. Background Technology

[0002] In the field of industrial slurry conveying, horizontal plunger pumps are a widely used and typical type of pump equipment. With their high efficiency, high-pressure output, and convenient maintenance, they play a crucial role in industrial production. Compared to similar centrifugal pumps, their efficiency advantage is particularly prominent—their actual operating efficiency is generally about twice that of centrifugal pumps. This characteristic makes them a core conveying equipment in key industries such as non-ferrous smelting, chemicals, fertilizers, and environmental protection.

[0003] However, this type of pump has significant technical shortcomings in actual operation: due to the weight of the plunger itself, it is prone to eccentricity during reciprocating motion, which leads to an imbalance in the stress distribution between the plunger and the inner wall of the plunger cylinder, and in turn causes abnormal wear on one side of the plunger cylinder; at the same time, eccentric motion can also cause abnormal leakage of slurry in the plunger area, which directly affects the stability of pump operation and ultimately leads to a significant reduction in the service life of the equipment.

[0004] It is worth noting that horizontal piston pumps, whether made of metal or ceramic, are currently plagued by the common problem of unilateral wear failure in the piston cylinder. This technological bottleneck has become a major constraint hindering the performance improvement and reliable application of horizontal piston pumps, urgently requiring effective solutions through technological innovation to avoid the risk of unilateral wear in the piston cylinder and ensure the long-term stable operation of the equipment. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a horizontal plunger pump that prevents uneven wear of the plunger cylinder.

[0006] This horizontal plunger pump, designed to prevent uneven wear of the plunger cylinder, includes: a power end, a plunger cylinder, a push-pull rod, a push-pull rod sealing assembly, a plunger, a plunger sealing ring, a plunger pump front cover, a plunger pump rear cover, a plunger pump mounting base, pump inlet valve A, pump inlet valve B, pump outlet valve A, and pump outlet valve B. It is equipped with a fall-prevention bracket to prevent the push-pull rod from deviating from its central axis. One end of the fall-prevention bracket is fixedly connected to the plunger pump mounting base, and the other end of the fall-prevention bracket is slidably sleeved onto the push-pull rod to generate support force.

[0007] As a preferred option, push-pull rod slide rails are provided on both the upper and lower sides of the push-pull rod and at the contact points with the fall arrestor bracket.

[0008] As a preferred embodiment, one end of the fall arrestor is fixed to the wall of the plunger pump mounting base above the push-pull rod, and the other end of the fall arrestor is slidably connected to the push-pull rod.

[0009] As a preferred embodiment, one end of the fall arrestor is fixed to the wall of the plunger pump mounting base below the push-pull rod, and the other end of the fall arrestor is slidably connected to the push-pull rod.

[0010] The beneficial effects of this utility model are:

[0011] It can effectively suppress push-pull rod deviation and reduce the risk of piston cylinder wear: The anti-fall bracket can form radial support force on the push-pull rod, restricting its tendency to deviate from its own central axis, fundamentally avoiding abnormal wear of the piston cylinder caused by push-pull rod wear, and extending the service life of key components (such as piston cylinder and push-pull rod).

[0012] The sliding structure ensures smooth operation: The upper and lower push-pull rod slide rails at the contact point between the push-pull rod and the anti-fall bracket assist the push-pull rod to slide smoothly along the slide rails, reducing frictional resistance and jamming during the sliding process, improving the smoothness and reliability of the pump body's reciprocating motion, and reducing operating vibration and noise.

[0013] The double-sided / top-bottom reinforced structure has excellent adaptability: the anti-fall bracket can be flexibly set on the piston pump mounting wall above or below the push-pull rod (i.e., single-sided or double-sided arrangement). The sliding sleeve connection method adapts to the force requirements under different working conditions, further improving the constraint effect on the push-pull rod and ensuring that it can effectively prevent uneven wear under complex working conditions (such as high pressure and high frequency reciprocating motion). Attached Figure Description

[0014] Figure 1 A schematic diagram of a horizontal plunger pump designed to prevent uneven wear of the plunger cylinder;

[0015] Figure 2 A schematic diagram showing the anti-fall bracket fixed to the wall of the plunger pump mounting base above the push-pull rod while simultaneously slidingly engaging the push-pull rod;

[0016] Figure 3 A schematic diagram showing the anti-fall bracket fixed to the wall of the plunger pump mounting base below the push-pull rod while simultaneously slidingly engaging the push-pull rod.

[0017] Explanation of reference numerals in the attached drawings: 1. Power end; 2. Push-pull rod; 3. Push-pull rod sealing assembly; 4. Plunger pump rear cover; 5. Pump outlet valve A; 6. Plunger; 7. Plunger sealing ring; 8. Plunger cylinder; 9. Pump outlet valve B; 10. Plunger pump front cover; 11. Pump inlet valve A; 12. Pump inlet valve B; 13. Plunger pump mounting base; 14. Anti-fall bracket; 14. Push-pull rod slide rail; 14.6. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments. The description of the embodiments below is only for the purpose of helping to understand the present invention. It should be noted that, for those skilled in the art, several modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0019] Example 1

[0020] A horizontal piston pump to prevent uneven wear of the piston cylinder, such as Figure 1 As shown, it includes: a power end 1, a plunger cylinder 8, a push-pull rod 2, a push-pull rod sealing assembly 3, a plunger 6, a plunger sealing ring 7, a plunger pump front cover 10, a plunger pump rear cover 4, a plunger pump mounting base 13, a pump inlet valve A11, a pump inlet valve B12, a pump outlet valve A5, and a pump outlet valve B9. It is equipped with a fall arrestor 14 to prevent the push-pull rod 2 from deviating from its own central axis; one end of the fall arrestor 14 is fixedly connected to the plunger pump mounting base 13, and the other end of the fall arrestor 14 is slidably sleeved on the push-pull rod 2 to generate a supporting force.

[0021] Push-pull rod slide rails 14.6 are provided on both the upper and lower sides of the push-pull rod 2 and at the contact points with the fall arrestor 14; such as Figure 2 As shown, one end of the fall arrestor bracket 14 is fixed to the wall of the plunger pump mounting base 13 above the push-pull rod 2, and the other end of the fall arrestor bracket 14 is slidably sleeved onto the push-pull rod 2.

[0022] Example 2

[0023] A horizontal piston pump to prevent uneven wear of the piston cylinder, such as Figure 1 As shown, it includes: a power end 1, a plunger cylinder 8, a push-pull rod 2, a push-pull rod sealing assembly 3, a plunger 6, a plunger sealing ring 7, a plunger pump front cover 10, a plunger pump rear cover 4, a plunger pump mounting base 13, a pump inlet valve A11, a pump inlet valve B12, a pump outlet valve A5, and a pump outlet valve B9. It is equipped with a fall arrestor 14 to prevent the push-pull rod 2 from deviating from its own central axis; one end of the fall arrestor 14 is fixedly connected to the plunger pump mounting base 13, and the other end of the fall arrestor 14 is slidably sleeved on the push-pull rod 2 to generate a supporting force.

[0024] Push-pull rod slide rails 14.6 are provided on both the upper and lower sides of the push-pull rod 2 and at the contact points with the fall arrestor 14; such as Figure 3 As shown, one end of the fall arrestor bracket 14 is fixed to the wall of the plunger pump mounting base 13 below the push-pull rod 2, and the other end of the fall arrestor bracket 14 is slidably sleeved onto the push-pull rod 2.

Claims

1. A horizontal plunger pump for preventing uneven wear of the plunger cylinder, comprising: The pump assembly comprises a power end (1), a plunger cylinder (8), a push-pull rod (2), a push-pull rod sealing assembly (3), a plunger (6), a plunger sealing ring (7), a plunger pump front cover (10), a plunger pump rear cover (4), a plunger pump mounting base (13), a pump inlet valve A (11), a pump inlet valve B (12), a pump outlet valve A (5), and a pump outlet valve B (9), characterized in that: a fall-prevention bracket (14) is provided to prevent the push-pull rod (2) from deviating from its own central axis; one end of the fall-prevention bracket (14) is fixedly connected to the plunger pump mounting base (13), and the other end of the fall-prevention bracket (14) is slidably sleeved on the push-pull rod (2).

2. The horizontal plunger pump for preventing uneven wear of the plunger cylinder according to claim 1, characterized in that: Push-pull rod (2) is provided with push-pull rod slide rails (14.6) on both the upper and lower sides and at the contact points with the fall arrester (14).

3. The horizontal plunger pump for preventing uneven wear of the plunger cylinder according to claim 2, characterized in that: One end of the fall arrestor (14) is fixed to the wall of the plunger pump mounting seat (13) above the push-pull rod (2), and the other end of the fall arrestor (14) is slidably sleeved on the push-pull rod (2).

4. The horizontal plunger pump for preventing uneven wear of the plunger cylinder according to claim 2, characterized in that: One end of the fall arrestor (14) is fixed to the wall of the plunger pump mounting seat (13) below the push-pull rod (2), and the other end of the fall arrestor (14) is slidably sleeved on the push-pull rod (2).

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