CN211737440U

CN211737440U - Seal guide assembly of oil-free plunger pump

Info

Publication number: CN211737440U
Application number: CN202020204951.1U
Authority: CN
Inventors: 袁承平
Original assignee: Ningbo Huaxun Cleaning Machinery Co ltd
Current assignee: Ningbo Huaxun Cleaning Machinery Co ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-10-23
Anticipated expiration: 2030-02-25

Abstract

The utility model relates to a plunger pump technical field especially relates to a sealed direction subassembly of oil-free plunger pump. Including installing confession plunger (14) gliding guide body (1) between cylinder body (3) and box (2), just all be provided with sealing washer (4) between the outer wall of guide body (1) and cylinder body (3) and box (2) inner wall, just guide body (1) inner wall upper portion still is equipped with vice water seal, and guide body (1) inner wall lower part is equipped with plunger bushing (8). The sealing guide assembly is good in waterproofness and convenient to disassemble and assemble.

Description

Seal guide assembly of oil-free plunger pump

Technical Field

The utility model relates to a plunger pump technical field especially relates to a sealed direction subassembly of oil-free plunger pump.

Background

In the existing oil-free plunger pump, a plunger penetrates through a self-lubricating plunger sleeve, the self-lubricating plunger sleeve is fixedly arranged in a box body, the self-lubricating plunger sleeve and the box body are in interference fit, the plunger reciprocates in the self-lubricating plunger sleeve, and an outer ring of the plunger and an inner ring of the self-lubricating plunger sleeve are in sliding fit, so that the structure has the following hidden troubles;

1. after the oil-free plunger pump is used for a long time, the phenomenon of water leakage caused by failure of a main water seal of a cylinder body is inevitable, and because the self-lubricating plunger sleeve does not have a waterproof sealing structure, water can enter the box body through the self-lubricating plunger sleeve, so that a bearing in the box body is corroded.

2. Because self-lubricating plunger bushing and box are interference fit, no matter the installation or dismantle such professional equipment of press that all needs, in case self-lubricating plunger bushing damages need to dismantle and install, non-professional equipment and professional can't accomplish, are unfavorable for extremely maintaining maintenance and after-sales service.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the sealing guide assembly of the oil-free plunger pump is good in waterproofness and convenient to disassemble and assemble.

The utility model adopts the technical proposal that: the utility model provides an oilless plunger pump's sealed direction subassembly, is including installing the gliding guide body of confession plunger between cylinder body and box, just all be provided with the sealing washer between the outer wall of guide body and cylinder body and the box inner wall, just guide body inner wall upper portion still is equipped with vice water seal, and guide body inner wall lower part is equipped with the plunger bushing.

Preferably, the auxiliary water seal comprises a first auxiliary water seal and a second auxiliary water seal which are arranged in sequence, and a drainage hole is further formed between the first auxiliary water seal and the second auxiliary water seal.

Preferably, the surface of the inner ring of the plunger sleeve is provided with an oil hole.

Preferably, the oil holes are uniformly formed in the surface of the inner ring of the plunger sleeve.

Preferably, the guide body is made of copper material.

Compared with the prior art in the structure more than adopting, the utility model has the advantages of it is following: set up the outer seal circle externally, just so need not with interference fit between guide body and box or the cylinder body, the dismouting is more convenient like this, has set up vice water seal moreover, with the cooperation of original main water seal, water-proof effects is better.

Make two with vice water seals to set up the wash port between two vice water seals, in case when the main water seal in the oilless plunger pump cylinder body and the first pair water seal of sealed guide assembly front end all became invalid like this, the vice water seal of second can play sealed effect, prevents that the water of leaking further flows into in the self-lubricating plunger cover, lets it flow from the wash port between the vice water seal of first pair water seal and the vice water seal of second, and water-proof effects is better.

Set up the oilhole on plunger bushing surface, lubricating grease can set up in these oilholes like this, when the plunger is reciprocating motion in the self-lubricating plunger bushing in sealed direction subassembly, lubricating grease in the self-lubricating plunger bushing oilhole will be attached to on the plunger, the rethread plunger transmits the vice water seal of second and first pair water seal on, thereby make the plunger, the vice water seal of second and first pair water seal all realize lubricating, ensure plunger outer lane and self-lubricating plunger bushing inner circle, the vice water seal inner circle of second, can long-term work when first pair water seal inner circle rubs.

The oil holes are uniformly arranged, so that lubricating grease from the oil holes can be uniformly distributed on the plunger piston.

The copper-based composite material is made of copper materials, has high structural strength, is not easy to corrode, and has long service life.

Drawings

Fig. 1 is the utility model relates to a structure schematic diagram of the sealed direction subassembly of oil-free plunger pump.

Fig. 2 is a cross-sectional view of the sealing guide assembly of the present invention installed behind the plunger pump.

Fig. 3 is an enlarged schematic view of a point a in fig. 2.

As shown in the figure: 1. a guide body; 2. a box body; 3. a cylinder body; 4. a seal ring; 5. a first secondary water seal; 6. a second secondary water seal; 7. a drain hole; 8. a plunger sleeve; 9. an oil hole; 10. an outer seal ring groove; 11. a first slot position; 12. a second slot position; 13. a main water seal; 14. and a plunger.

Detailed Description

The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the following specific embodiments.

The utility model provides a sealed direction subassembly of oil-free plunger pump, includes guide body 1, sets up at the outer seal ring groove 10 of 1 outer wall of guide body, sets up at the vice water seal structure on 1 inner wall upper portion of guide body and sets up at the plunger bushing 8 of 1 inner wall lower part of guide body, wherein:

the guide piece body 1 is arranged between a box body 2 and a cylinder body 3 of the plunger pump, the front end of the guide piece body is arranged in the cylinder body 3, the guide piece body is sealed with the cylinder body 3 through a sealing ring 4 arranged in an outer sealing ring groove 10 at the upper part of the outer wall of the guide piece body 1, the rear end of the guide piece body is arranged in the box body 2, the guide piece body is sealed with the box body 2 through a sealing ring 4 arranged in an outer sealing ring groove 10 at the lower part of the outer wall of the guide piece body 1, and;

the auxiliary water seal structure mainly comprises a first groove position 11 and a second groove position 12 which are sequentially arranged on the upper part of the inner wall of the guide piece body 1, a first auxiliary water seal 5 is arranged in the first groove position 11, a second auxiliary water seal 6 is arranged in the second groove position 12, and a circle of drain holes 7 are arranged between the first groove position 11 and the second groove position 12;

the plunger sleeve 8 is a self-lubricating plunger sleeve 8 and is made of stainless steel and polyformaldehyde, oil holes 9 are uniformly formed in the inner wall of the plunger sleeve 8, and lubricating grease is arranged in the oil holes 9;

the advantage of this application is that it is,

1. supporting and guiding

The plunger 14 reciprocates in the self-lubricating plunger sleeve 8 in the sealing guide assembly, and the self-lubricating plunger sleeve 8 plays roles in supporting, guiding and lubricating.

2. Sealing waterproof

There is the vice water seal 6 of second at the 8 front ends of self-lubricating plunger bushing in the sealed direction subassembly, there is first vice water seal 5 the vice water seal 6 front ends of second, in case main water seal 13 in the oilless plunger pump cylinder body 3 and the first vice water seal 5 of sealed direction subassembly front end all lose efficacy, the vice water seal 6 of second can play sealed effect, prevent in the water of leaking further flows into self-lubricating plunger bushing 8, let its wash port 7 from between the vice water seal 5 of first pair and the vice water seal 6 of second flow out.

3. Lubrication of friction members

The key to this design is; when plunger 14 is reciprocating motion in the self-lubricating plunger bushing 8 in the sealed direction subassembly, lubricating grease in the 8 oilholes 9 of self-lubricating plunger bushing will be attached to on plunger 14, the rethread plunger 14 transmits on the vice water seal of second 6 and the first pair water seal 5, thereby make plunger 14, the vice water seal of second 6 and the first pair water seal 5 all realize lubricating, ensure plunger 14 outer lane and the 8 inner circles of self-lubricating plunger bushing, the vice water seal of second 6 inner circles, can long-term work when the first pair water seal 5 inner circles friction, form a complete sealing, direction and lubricating mechanism.

4. Maintenance and service

When the self-lubricating plunger sleeve 8 in the seal guide assembly fails due to abrasion, the seal guide assembly can be manually taken out from the box body 2 and the cylinder body 3 of the oil-free plunger pump or replaced or added with lubricating grease, and the maintenance is very convenient.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides an oilless plunger pump's sealed direction subassembly which characterized in that: including installing confession plunger (14) gliding guide body (1) between cylinder body (3) and box (2), just all be provided with sealing washer (4) between the outer wall of guide body (1) and cylinder body (3) and box (2) inner wall, just guide body (1) inner wall upper portion still is equipped with vice water seal, and guide body (1) inner wall lower part is equipped with plunger bushing (8).

2. An oil-free plunger pump seal guide assembly as claimed in claim 1, wherein: the auxiliary water seal comprises a first auxiliary water seal (5) and a second auxiliary water seal (6) which are sequentially arranged, and a drain hole (7) is further formed between the first auxiliary water seal (5) and the second auxiliary water seal (6).

3. An oil-free plunger pump seal guide assembly as claimed in claim 1, wherein: and an oil hole (9) is formed in the surface of the inner ring of the plunger sleeve (8).

4. An oil-free plunger pump seal guide assembly as claimed in claim 3, wherein: the oil holes (9) are uniformly formed in the surface of the inner ring of the plunger sleeve (8).

5. An oil-free plunger pump seal guide assembly as claimed in claim 1, wherein: the guide piece body (1) is made of a copper material.