CN219344942U

CN219344942U - Plunger rod adjusting component and plunger pump

Info

Publication number: CN219344942U
Application number: CN202320351655.8U
Authority: CN
Inventors: 齐彬; 商伟伟
Original assignee: Tianjin Tongjie High Pressure Pump Co ltd
Current assignee: Tianjin Tongjie High Pressure Pump Co ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-07-14
Anticipated expiration: 2033-03-01

Abstract

The utility model belongs to the technical field of plunger pumps, and discloses a plunger rod adjusting assembly and a plunger pump.

Description

Plunger rod adjusting component and plunger pump

Technical Field

The utility model relates to the technical field of plunger pumps, in particular to a plunger rod adjusting assembly and a plunger pump.

Background

The plunger pump generally comprises a driving element, a driving rod, a connecting disc, a plunger rod, a cylinder body and other parts, wherein the driving end of the driving element is connected with the driving rod, the driving rod is connected with the plunger rod through the connecting disc, and the plunger rod moves back and forth in the cylinder body under the driving action of the driving element so as to realize the pressurization of liquid.

In the prior art, the plunger rod and the connecting disc are fixedly connected in a hot melting mode and the like, so that the plunger rod can only realize axial reciprocating movement, radial movement cannot be realized, and in the reciprocating movement process of the plunger rod, if the coaxiality of the plunger rod and the cylinder body is low, the problem of abrasion easily occurs, the service life of the plunger rod is further shortened, and the normal use of the plunger pump is influenced.

Accordingly, there is a need for a plunger rod adjustment assembly and a plunger pump that solve the above-mentioned problems.

Disclosure of Invention

An object of the present utility model is to provide a plunger rod adjusting assembly, which can realize radial movement of a plunger rod, and further achieve the effect of self-adjusting coaxiality of the plunger rod and a cylinder body.

To achieve the purpose, the utility model adopts the following technical scheme:

a plunger rod adjustment assembly comprising:

a connecting disc;

the connecting piece is connected with the connecting disc, the connecting piece is provided with a containing groove, the connecting disc is plugged in a notch of the containing groove, and a through hole is formed in the bottom of the containing groove;

the clamping ring is clamped between the bottom of the accommodating groove and the connecting disc, and a first protruding part is arranged on the inner wall of the clamping ring;

the plunger rod penetrates through the through hole and the compression ring, a second protruding part is arranged on the side wall of the plunger rod, the second protruding part is positioned between the first protruding part and the connecting disc, and the second protruding part is respectively abutted with the inner wall of the compression ring and the first protruding part;

along the radial direction of the plunger rod, a first gap is reserved between the outer wall of the compression ring and the inner wall of the containing groove, and a second gap is reserved between the side wall of the plunger rod and the hole wall of the through hole.

Optionally, the plunger rod adjusting assembly further comprises a gasket, the plunger rod penetrates through the gasket, and the gasket is clamped between the compression ring and the bottom of the accommodating groove.

Optionally, a fixing groove is formed on one side of the compression ring facing the bottom of the accommodating groove, and the gasket is arranged in the fixing groove.

Optionally, the gasket is a rubber ring.

Optionally, the second protruding portion is a snap spring, an annular groove is formed in the side wall of the plunger rod, and the snap spring is clamped in the annular groove.

Optionally, the second protrusion extends in a closed loop along the circumference of the plunger rod;

or, the number of the second protruding parts is a plurality, and the plurality of the second protruding parts are uniformly distributed along the circumferential direction of the plunger rod.

Optionally, the first protruding part extends along the circumferential direction of the compression ring to form a closed loop structure;

or, the number of the first protruding parts is a plurality of, and the plurality of the first protruding parts are uniformly distributed along the circumferential direction of the compression ring.

Optionally, the plunger rod adjustment assembly further comprises a fastener by which the connecting element is detachably connected to the connecting disc.

Optionally, the number of fasteners is plural, and the plural fasteners are uniformly distributed along the circumference of the connecting member.

Another object of the present utility model is to provide a plunger pump, which has the effect of self-adjusting the coaxiality of the plunger rod and the cylinder.

the plunger pump comprises a driving piece, a driving rod and the plunger rod adjusting assembly, one end of the driving rod is connected with the driving end of the driving piece, and the other end of the driving rod is connected with the connecting disc.

The beneficial effects are that:

the utility model provides a plunger rod adjusting component, which is provided with a connecting piece with a containing groove, wherein a connecting disc is connected with the connecting piece and seals a notch of the containing groove, a compression ring is clamped between the groove bottom of the containing groove and the connecting disc, a first bulge is arranged on the inner wall of the compression ring, a through hole is formed in the groove bottom of the containing groove, so that a plunger rod passes through the through hole and the compression ring, a second bulge is arranged on the side wall of the plunger rod, and the second bulge is positioned between the first bulge and the connecting disc, thereby realizing movable connection of the plunger rod and the connecting disc.

According to the plunger pump provided by the utility model, the plunger rod adjusting assembly is adopted, and in the operation process of the plunger pump, the plunger rod can reciprocate linearly in the axial direction and can also displace in the radial direction, so that the effect of automatically adjusting the coaxiality of the plunger rod and the cylinder body is realized, the abrasion probability of the plunger rod is reduced, and the operation reliability of the plunger pump is effectively improved.

Drawings

Fig. 1 is a schematic view of the structure of the plunger rod adjustment assembly provided in this embodiment;

fig. 2 is a schematic cross-sectional view of a plunger rod adjustment assembly provided in accordance with the present embodiment;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a schematic cross-sectional structure of the connector according to the present embodiment.

In the figure:

10. a driving rod;

100. a connecting disc; 200. a connecting piece; 210. a receiving groove; 211. a through hole; 300. a compression ring; 310. a first projection; 320. a fixing groove; 400. a plunger rod; 410. a second projection; 510. a first gap; 520. a second gap; 600. a gasket; 700. a fastener;

d1, a first direction; d2, the second direction.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The embodiment provides a plunger rod adjusting part, can realize the radial movement of plunger rod, and then reaches the effect of plunger rod self-adjustment and cylinder body axiality.

Specifically, as shown in fig. 1 to 4, the adjusting bracket assembly of the plunger rod 400 comprises a connecting disc 100, a connecting element 200, a pressing ring 300 and the plunger rod 400, wherein the connecting element 200 is connected with the connecting disc 100, the connecting element 200 is provided with an accommodating groove 210, the connecting disc 100 is plugged in a notch of the accommodating groove 210, a through hole 211 is arranged at the bottom of the accommodating groove 210, the pressing ring 300 is clamped between the bottom of the accommodating groove 210 and the connecting disc 100, a first protruding part 310 is arranged on the inner wall of the pressing ring 300, the plunger rod 400 penetrates through the through hole 211 and the pressing ring 300, a second protruding part 410 is arranged on the side wall of the plunger rod 400, the second protruding part 410 is positioned between the first protruding part 310 and the connecting disc 100, the second protruding part 410 is respectively abutted with the inner wall of the pressing ring 300 and the first protruding part 310, a first gap 510 is reserved between the outer wall of the pressing ring 300 and the inner wall of the accommodating groove 210 along the radial direction of the plunger rod 400, and a second gap 520 is reserved between the side wall of the plunger rod 400 and the wall of the through hole 211.

The plunger rod adjusting assembly provided in this embodiment is provided with the connector 200 with the accommodating groove 210, the connecting disc 100 is connected with the connector 200 and seals the notch of the accommodating groove 210, the pressing ring 300 is clamped between the groove bottom of the accommodating groove 210 and the connecting disc 100, the first protruding portion 310 is provided on the inner wall of the pressing ring 300, the through hole 211 is provided at the groove bottom of the accommodating groove 210, the plunger rod 400 penetrates through the through hole 211 and the pressing ring 300, and the second protruding portion 410 is provided on the side wall of the plunger rod 400, so that the second protruding portion 410 is located between the first protruding portion 310 and the connecting disc 100, the movable connection between the plunger rod 400 and the connecting disc 100 is realized, in addition, a first gap 510 is reserved between the outer wall of the pressing ring 300 and the inner wall of the accommodating groove 210, a second gap 520 is reserved between the side wall of the plunger rod 400 and the wall of the through hole 211, the first gap 510 and the second gap 520 jointly form a radial adjusting gap of the plunger rod 400, if the coaxiality between the plunger rod 400 and the cylinder body is lower, the plunger rod 400 can displace in the axial reciprocating motion in the passing, and the radial direction, and further the self-adjusting of the plunger rod 400 and the cylinder body can automatically adjust the coaxiality, the wear of the plunger rod 400 is guaranteed, the normal service life of the plunger rod 400 is guaranteed, and the normal service life is guaranteed.

Alternatively, as shown in fig. 1 to 4, the end surface of the plunger rod 400 near one side of the connection disc 100 contacts with the connection disc 100, so that the overall structure of the plunger rod adjusting assembly is compact, and the overall volume of the plunger pump is reduced. The end surface of the plunger rod 400 may be in contact with the connection disc 100, or may be in contact with the connection disc 100.

Optionally, as shown in fig. 1 to 4, the plunger rod adjusting assembly further includes a fastener 700, and the connecting member 200 is detachably connected to the connecting disc 100 by the fastener 700, so that the connecting disc 100 and the connecting member 200 can be easily disassembled and assembled, thereby simplifying maintenance operations of the plunger rod adjusting assembly and assembly operations of the plunger rod adjusting assembly. In this embodiment, the fastening member 700 is a bolt, and in other embodiments, the fastening member 700 may be a buckle or the like, so long as the detachable connection between the connector 200 and the connection pad 100 can be achieved, which is not described here.

Preferably, as shown in fig. 1 to 4, the number of the fasteners 700 is plural, and the fasteners 700 may be three, four, five, etc. by way of example, the plurality of fasteners 700 are uniformly distributed along the circumferential direction of the connection member 200 to improve the reliability and uniformity of the connection member 200 to the connection disc 100.

Optionally, the connecting piece 200 is a flange, and the flange is a standard piece commonly used in the art, so that the flange is convenient to purchase, and the central groove and the central hole of the flange can be directly used as the accommodating groove 210 and the through hole 211, so that the groove milling process and the hole opening process are omitted, and the production efficiency is improved and the production cost is reduced.

Optionally, as shown in fig. 1 to 4, the plunger rod adjusting assembly further includes a gasket 600, the plunger rod 400 passes through the gasket 600, the gasket 600 is sandwiched between the pressing ring 300 and the bottom of the accommodating groove 210, when the plunger rod 400 moves radially, due to the abutting of the second protruding portion 410 and the inner wall of the pressing ring 300, the pressing ring 300 moves radially along with the plunger rod 400, a certain friction force is provided between the pressing ring 300 and the gasket 600, when the pressing ring 300 moves radially, the friction force can play a certain role in blocking the radial movement of the pressing ring 300, so as to reduce the radial movement range of the pressing ring 300, prevent the pressing ring 300 from moving in a too large range in the radial direction, avoid the problem that the outer wall of the pressing ring 300 collides with the inner wall of the accommodating groove 210, and protect the pressing ring 300.

Further, as shown in fig. 1 to 4, a fixing groove 320 is provided at a side of the pressing ring 300 facing the bottom of the receiving groove 210, the gasket 600 is disposed in the fixing groove 320, and the thickness of the gasket 600 is greater than the groove depth of the fixing groove 320, so as to achieve a radial limiting effect on the gasket 600.

Preferably, the gasket 600 is a rubber ring, and the rubber ring has good elastic properties, so that the rubber ring is selected as the gasket 600, which not only can provide friction force for the compression ring 300, but also can play a role in buffering the compression ring 300, so as to prevent the compression ring 300 from colliding with the gasket 600 or the bottom of the accommodating groove 210 when the plunger rod 400 axially reciprocates, and thus, the compression ring 300 and the connecting piece 200 are well protected.

Optionally, the first protruding portion 310 extends in a closed loop along the circumferential direction of the compression ring 300, so as to ensure reliability and stability of the abutment of the first protruding portion 310 with the second protruding portion 410.

In one embodiment, the number of the first protruding parts 310 is plural, and the plurality of the first protruding parts 310 are uniformly distributed along the circumferential direction of the pressing ring 300, so that the effect of improving the reliability and stability of the abutting of the first protruding parts 310 with the second protruding parts 410 can be achieved.

Optionally, the second protruding portion 410 is a snap spring, an annular groove is formed in the side wall of the plunger rod 400, the snap spring is clamped in the annular groove, the disassembly and assembly operation of the snap spring is simple, and the snap spring is selected as the second protruding portion 410, so that disassembly and assembly of the plunger rod 400, the connecting piece 200 and the compression ring 300 are facilitated, and the assembly and disassembly operation of the plunger rod adjusting assembly is simplified.

In one embodiment, the second protruding portion 410 is a boss structure protruding from the side wall of the plunger rod 400, and the second protruding portion 410 extends along the circumferential direction of the plunger rod 400 to form a closed loop structure, or the number of the second protruding portions 410 is plural, and the plurality of second protruding portions 410 are uniformly distributed along the circumferential direction of the plunger rod 400, so long as the second protruding portions 410 can respectively abut against the inner wall of the pressing ring 300 and the first protruding portion 310.

As shown in fig. 1 to 4, a threaded hole is formed in a driving rod 10 of a plunger pump, an external thread is formed in a connecting disc 100, the threaded hole is in threaded fit with the external thread to realize connection of the driving rod 10 and the connecting disc 100, meanwhile, the other end of the driving rod 10 is connected with a driving end of a driving element (not shown in the figure), under the driving action of the driving element, the driving rod 10 and the connecting disc 100 axially reciprocate, meanwhile, a plunger rod 400 axially reciprocates in a movable cavity of a cylinder body under the driving of the connecting disc 100 to realize pumping and water delivery of the plunger pump, and when the plunger pump pumps water, the plunger rod 400 moves towards a first direction D1, and when the plunger pump pumps water, the plunger rod 400 moves towards a second direction D2.

When the plunger pumps water, the connection disc 100 moves toward the first direction D1, and at the same time, the connection disc 100 pushes the plunger rod 400 to move toward the first direction D1; when the plunger pump pumps water, the connecting disc 100 moves towards the second direction D2, and the connecting disc 100 drives the connecting piece 200 to move towards the second direction D2 together, the connecting piece 200 applies a force towards the second direction D2 to the pressing ring 300 while moving, the pressing ring 300 applies the force to the second protruding part 410 through the first protruding part 310, and the second protruding part 410 applies the force to the plunger rod 400, so that the plunger rod 400 moves towards the second direction D2, and the effect that the plunger rod 400 moves along with the connecting disc 100 towards the second direction D2 is achieved through the interaction of the connecting piece 200, the pressing ring 300, the first protruding part 310 and the second protruding part 410.

In the process that the plunger rod 400 moves towards the first direction D1 and the process that the plunger rod 400 moves towards the second direction D2, if the coaxiality of the plunger rod 400 and the cylinder is lower, the side wall of the plunger rod 400 contacts with the inner wall of the movable cavity of the cylinder, so that the plunger rod 400 is radially displaced, the effect of automatically adjusting the coaxiality of the cylinder is achieved, the problem of hard impact between the plunger rod 400 and the inner wall of the movable cavity is avoided, and the probability of abrasion problem of the plunger rod 400 is further reduced.

The present embodiment also provides a plunger pump, which has the effect of automatically adjusting the coaxiality of the plunger rod 400 and the cylinder.

Specifically, the plunger pump comprises a driving element, a driving rod 10 and the plunger rod adjusting assembly, wherein one end of the driving rod 10 is connected with the driving end of the driving element, and the other end of the driving rod 10 is connected with a connecting disc 100.

The plunger pump adopts the plunger rod adjusting assembly, and in the running process of the plunger pump, the plunger rod 400 can reciprocate linearly in the axial direction and can also displace in the radial direction, so that the effect of automatically adjusting the coaxiality of the plunger rod 400 and the cylinder body is realized, the wearing probability of the plunger rod 400 is reduced, and the running reliability of the plunger pump is effectively improved.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A plunger rod adjustment assembly comprising:

a connection disc (100);

the connecting piece (200), the connecting piece (200) is connected with the connecting disc (100), the connecting piece (200) is provided with a containing groove (210), the connecting disc (100) is plugged in a notch of the containing groove (210), and a through hole (211) is formed in the bottom of the containing groove (210);

the clamping ring (300) is clamped between the bottom of the accommodating groove (210) and the connecting disc (100), and a first protruding part (310) is arranged on the inner wall of the clamping ring (300);

the plunger rod (400) penetrates through the through hole (211) and the pressing ring (300), a second protruding part (410) is arranged on the side wall of the plunger rod (400), the second protruding part (410) is positioned between the first protruding part (310) and the connecting disc (100), and the second protruding part (410) is respectively abutted with the inner wall of the pressing ring (300) and the first protruding part (310);

along the radial direction of the plunger rod (400), a first gap (510) is reserved between the outer wall of the compression ring (300) and the inner wall of the accommodating groove (210), and a second gap (520) is reserved between the side wall of the plunger rod (400) and the hole wall of the through hole (211).

2. The plunger rod adjustment assembly according to claim 1, further comprising a washer (600), said plunger rod (400) being threaded through said washer (600), said washer (600) being sandwiched between said compression ring (300) and the bottom of said receiving groove (210).

3. Plunger rod adjustment assembly according to claim 2, wherein the side of the pressure ring (300) facing the bottom of the receiving groove (210) is provided with a fixation groove (320), the gasket (600) being arranged in the fixation groove (320).

4. The plunger rod adjustment assembly according to claim 2, wherein the washer (600) is a rubber ring.

5. The plunger rod adjustment assembly according to any one of claims 1-4, wherein the second protrusion (410) is a snap spring, an annular groove being provided in the side wall of the plunger rod (400), the snap spring being snapped into the annular groove.

6. The plunger rod adjustment assembly according to any one of claims 1-4, wherein the second protrusion (410) extends in a closed loop configuration along the circumference of the plunger rod (400);

or, the number of the second protruding parts (410) is a plurality, and the plurality of the second protruding parts (410) are uniformly distributed along the circumferential direction of the plunger rod (400).

7. The plunger rod adjustment assembly according to any one of claims 1-4, wherein the first protrusion (310) extends in a closed loop configuration along the circumference of the compression ring (300);

or, the number of the first protruding parts (310) is a plurality, and the plurality of the first protruding parts (310) are uniformly distributed along the circumferential direction of the compression ring (300).

8. The plunger rod adjustment assembly according to any one of claims 1-4, further comprising a fastener (700), wherein the connecting element (200) is detachably connected to the connecting disc (100) by means of the fastener (700).

9. The plunger rod adjustment assembly according to claim 8, wherein the number of fasteners (700) is plural, and wherein the plurality of fasteners (700) are evenly distributed along the circumference of the connecting element (200).

10. Plunger pump, characterized in that it comprises a driving element, a driving rod (10) and a plunger rod adjusting assembly according to any of claims 1-9, wherein one end of the driving rod (10) is connected to the driving end of the driving element, and the other end of the driving rod (10) is connected to the connecting disc (100).