CN219388145U

CN219388145U - Special device for disassembling and assembling plunger

Info

Publication number: CN219388145U
Application number: CN202223207430.XU
Authority: CN
Inventors: 吕国山; 张睿晖; 林芝甫; 吕浩; 缪祥坤
Original assignee: Hongyun Honghe Tobacco Group Co Ltd
Current assignee: Hongyun Honghe Tobacco Group Co Ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-07-21
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a special device for disassembling and assembling a plunger, which comprises: push-pull rod, driving rod, support frame and hand wheel; one end of the push-pull rod enters the plunger and is connected with the plunger, the other end of the push-pull rod is connected with one end of the driving rod, the other end of the driving rod is connected with the supporting frame, and the hand wheel is fixed at the other end of the driving rod; the support frame is contacted with the inner surface and the outer surface of the end cover of the plunger pump. According to the technical content disclosed by the utility model, the plunger is pulled out and loaded by utilizing screw transmission, so that the plunger and a plunger cavity have good coaxiality and straightness, the plunger is uniformly stressed, and the contact surface of the plunger and the plunger cavity is not easy to damage; the same device can realize the pulling-out and loading of the plunger, is convenient for maintenance personnel to maintain quickly, and reduces the complexity of tool use.

Description

Special device for disassembling and assembling plunger

Technical Field

The utility model relates to the technical field of plunger pumps, in particular to a special device for disassembling and assembling a plunger.

Background

The special device for disassembling and assembling the plunger is an auxiliary device in the process of disassembling, assembling and overhauling the plunger of the plunger pump, the inner wall of a plunger cavity can generate scale under the high-temperature and high-pressure working condition of the plunger, the service performance of the plunger is affected, and friction is increased due to the scale when the plunger is replaced, so that the plunger is difficult to pull out.

In order to facilitate maintenance personnel to operate when repairing and replacing the plunger, the existing device for pulling out the plunger by impact is used as an auxiliary tool. However, in the actual use process, the coaxiality of the plunger and the plunger cavity is affected by pulling out the plunger by using the impact device, friction is generated between the plunger and the plunger cavity, the stress of the plunger is uneven due to the change of impact force, and the plunger cavity is damaged in the pulling-out process of the plunger.

Therefore, how to provide a device special for assembling and disassembling a plunger becomes a technical problem to be solved in the field.

Disclosure of Invention

The utility model aims to provide a device special for disassembling and assembling a plunger.

According to the utility model, a special device for disassembling and assembling a plunger is provided, which comprises a push-pull rod, a driving rod, a supporting frame and a hand wheel;

one end of the push-pull rod enters the plunger and is connected with the plunger, the other end of the push-pull rod is connected with one end of the driving rod, the other end of the driving rod is connected with the supporting frame, and the hand wheel is fixed at the other end of the driving rod; the support frame is contacted with the inner surface and the outer surface of the end cover of the plunger pump.

Optionally, the support frame includes: a fixed structure and a contact structure;

the fixing structure is disc-shaped; the other end of the driving rod is connected with the center of the fixed structure; the contact structure is a right-angle structure; the contact structures are four, and one ends of the four contact structures are respectively fixed at the positions of 0 DEG, 90 DEG, 180 DEG and 270 DEG of the fixed structure.

Optionally, the support frame further includes: a movable clamping foot;

the movable clamping pin is arranged at the other end of the contact structure.

Optionally, the movable clamping leg 7 can move within a preset stroke.

Optionally, the connection end of the push-pull rod with the plunger has a first thread of a predefined length, through which it is screwed into the plunger.

Optionally, the apparatus further comprises: the connecting buckle;

the other end of the push-pull rod is connected with one end of the driving rod through the connecting buckle.

Optionally, the other end of the driving rod is provided with a second thread, and the driving rod is connected with the internal thread of the supporting frame through the second thread.

Optionally, the apparatus further comprises: a lock nut;

the hand wheel is fixed at the other end of the driving rod through the locking nut.

According to the technical content disclosed by the utility model, the method has the following beneficial effects: the plunger is pulled out and put in by utilizing screw transmission, so that the plunger and the plunger cavity have good coaxiality and straightness, the plunger is uniformly stressed, and the contact surface of the plunger and the plunger cavity is not easy to damage; the same device can realize the pulling-out and loading of the plunger, is convenient for maintenance personnel to maintain quickly, and reduces the complexity of tool use.

Other features of the present utility model and its advantages will become apparent from the following detailed description of exemplary embodiments of the utility model, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model.

FIG. 1 is an isometric view of a device dedicated to plunger assembly and disassembly according to an embodiment;

FIG. 2 is a front view of a device for attaching and detaching a plunger according to an embodiment;

fig. 3 is a schematic view of a movable clip.

Reference numerals illustrate: the device comprises a push-pull rod, a 2-connecting buckle, a 3-driving rod, a 4-supporting frame, a 41-fixing structure, a 42-contact structure, a 5-locking nut, a 6-hand wheel and a 7-movable clamping foot.

Detailed Description

Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

According to the utility model, as shown in fig. 1 and 2, a special device for disassembling and assembling a plunger is provided, which comprises a push-pull rod 1, a driving rod 3, a supporting frame 4 and a hand wheel 6;

one end of the push-pull rod 1 enters the plunger and is connected with the plunger, the other end of the push-pull rod 1 is connected with one end of the driving rod 3, the other end of the driving rod 3 is connected with the supporting frame 4, and the hand wheel 6 is fixed at the other end of the driving rod 3; the supporting frame 4 is contacted with the inner surface and the outer surface of the end cover of the plunger pump to form a stress frame.

In some embodiments, the support stand 4 comprises: a fixing structure 41 and a contact structure 42;

the fixing structure 41 is disc-shaped; the other end of the driving rod 3 is connected with the center of the fixed structure 41; the contact structure 42 is a right-angle structure; the contact structures 42 have four, and one ends of the four contact structures 42 are fixed at positions of 0 °, 90 °, 180 °, and 270 ° of the fixing structure 41, respectively.

The support frame 4 further comprises: a movable clamping foot 7;

the movable pin 7 is disposed at the other end of the contact structure 42.

As shown in fig. 3, the movable clamping pin 7 can move in a preset stroke, so that the lower clamping pin of the supporting frame 4 can enter the end cover hole of the plunger pump to be in contact with the inner surface, and the plunger is stressed when pulled out.

In some embodiments, the connection end of the push-pull rod 1 with the plunger has a first thread of predefined length, through which it is screwed into the plunger.

The apparatus further comprises: a connecting buckle 2;

the other end of the push-pull rod 1 is connected with one end of the driving rod 3 through the connecting buckle 2, and the connecting buckle 2 enables the push-pull rod 1 and the driving rod 3 not to be affected when rotating and can be synchronous when being stressed.

The other end of the driving rod 3 is provided with a second thread, and the driving rod is connected with the internal thread of the supporting frame 4 through the second thread.

The apparatus further comprises: a lock nut 5;

the hand wheel 6 is fixed at the other end of the driving rod 3 through the locking nut 5.

The specific working principle is as follows: the support frame 4 is in contact with the inner surface and the outer surface of the end cover of the plunger pump to form a stress frame, limited threads of the driving rod 3 are in spiral transmission with the support frame 4 by the hand wheel 6, the driving rod 3 transmits push-pull force required by the push-pull rod 1, limited threads on the surface of the push-pull rod 1 are screwed into the plunger, and the connecting buckle 2 enables the push-pull rod 1 and the driving rod 3 not to be affected when rotating and can be synchronous when stressed; the movable clamping pin 7 can move in a limited stroke, so that the lower clamping pin of the supporting frame 4 can enter the end cover hole of the plunger pump to be contacted with the inner surface, and the plunger is stressed when pulled out.

In summary, the technical content disclosed by the utility model is that the plunger is pulled out and put in by utilizing screw transmission, so that the plunger and a plunger cavity have good coaxiality and straightness, the plunger is uniformly stressed, and the contact surface of the plunger and the plunger cavity is not easy to damage; the same device can realize the pulling-out and loading of the plunger, is convenient for maintenance personnel to maintain quickly, and reduces the complexity of tool use.

While certain specific embodiments of the utility model have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the utility model. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims

1. A plunger disassembly and assembly specific device, comprising: push-pull rod, driving rod, support frame and hand wheel;

2. The plunger assembling and disassembling dedicated apparatus as set forth in claim 1, wherein the supporting frame includes: a fixed structure and a contact structure;

3. The plunger assembly and disassembly specific apparatus as set forth in claim 2, wherein the support frame further comprises: a movable clamping foot;

the movable clamping pin is arranged at the other end of the contact structure.

4. A plunger assembly and disassembly special device according to claim 3, wherein the movable catch is movable within a predetermined travel.

5. The plunger assembly and disassembly device according to claim 4, wherein the connecting end of the push-pull rod and the plunger has a first thread of a predefined length, which is screwed into the plunger through the first thread.

6. The plunger assembly and disassembly specific apparatus as set forth in claim 5, further comprising: the connecting buckle;

7. The plunger assembling and disassembling dedicated apparatus according to claim 6, wherein the other end of the driving rod is provided with a second screw thread, which is coupled with the internal screw thread of the supporting frame through the second screw thread.

8. The plunger assembly and disassembly specific apparatus as set forth in claim 7, further comprising: a lock nut;