CN214888848U

CN214888848U - Pump truck main oil cylinder piston rod sealing system

Info

Publication number: CN214888848U
Application number: CN202022965694.6U
Authority: CN
Inventors: 董小红
Original assignee: Weiwan Technology Co ltd
Current assignee: Weiwan Technology Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-11-26
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a pump truck main oil cylinder piston rod sealing system, which comprises a guide sleeve, wherein the inner wall of the guide sleeve is connected with a piston rod body in a sliding way, the utility model discloses a guide sleeve, including the guide sleeve inner wall, the guide sleeve inner wall has set gradually first annular, second annular, third annular, fourth annular, fifth annular, sixth annular, seventh annular, eighth annular from a left side to the right side, the utility model discloses, the buffering sealing washer that sets up can block high temperature operating oil, improves the durability of resistant oily heat-resisting rod sealing washer, and first protection retaining ring can improve the life of buffering sealing washer, and resistant oily heat-resisting rod sealing washer can prevent that operating oil from revealing to the outside, and second protection retaining ring avoids resistant oily heat-resisting rod sealing washer reversal, and waterproof sealing washer can prevent outside water invasion, and dustproof sealing washer is provided with the second skeleton of metal material, third skeleton, prevents outside most silt, the granule invasion, and antifouling sealing washer strikes off the tiny granule through dustproof sealing washer invasion.

Description

Pump truck main oil cylinder piston rod sealing system

Technical Field

The utility model relates to a sealed technical field especially relates to pump truck master cylinder piston rod sealing system.

Background

The sealing system is a material or a part for preventing fluid or solid particles from leaking from adjacent joint surfaces and preventing external impurities such as dust, moisture and the like from invading parts in machine equipment, although a sealing element in the sealing system is small, the sealing element has the function of becoming a basic part and a fitting in the main national economy industries such as national defense, chemical engineering, petroleum, coal, transportation, mechanical manufacturing and the like, and plays a very important role in the development of national economy, the storage room temperature of the sealing element is preferably below 30 ℃, the high-temperature aging of the sealing element is avoided, strong light irradiation is avoided, the corrosion or early aging of the sealing element by ozone in the air is avoided, and various sealing performance influence factors are different, and the influence factors comprise temperature, medium, abrasion, borne pressure and the like.

The pump truck is a machine for continuously conveying material fluid along pipeline by utilizing pressure, and is formed from pump body and conveying pipe, and is characterized by that on the chassis of truck a general pump truck is reformed, and on the chassis a movement and power transmission device, pumping and stirring device, material-distributing device and other auxiliary devices are mounted, and the power of pump truck can be used for transferring the power of engine into hydraulic pump group by means of power transfer box, the hydraulic pump can be used for driving piston to drive pump to work, then the material-distributing rod and conveying pipe on the pump truck can be used for conveying material fluid to a certain height and distance, and the engineering machines of pump truck and excavator, etc. can use oil cylinder, and the working environment of said pump truck and engineering machine can be determined, and the sealing system on the main oil cylinder piston rod used by engineering machines of pump truck, etc. can be different from that of general sealing system, and Chinese patent publication No. CN209671493U provides a buffer sealing component for high-performance engineering machine, the device comprises a sealing element main body, wherein a plurality of sand holes are formed in the surface of the sealing element main body, an outer ring is arranged at one end of the sealing element main body, a sealing ring is arranged at one side of the outer ring, a sealing element is arranged at one side of a baffle plate, a spring is arranged at one side of the sealing element, a piston is arranged at one side of the spring, a steel iron ring is arranged at one side of the piston, a bottom ring is arranged at one side of the steel iron ring, the device is provided with the piston made of an aluminum alloy material, the aluminum alloy material has the advantage of good heat conductivity and has a shockproof effect, the spring is made of a stainless steel material, a stainless steel spring wire can resist fatigue under a high-temperature condition and has high strength, the service life of the sealing element can be prolonged, the sealing ring made of a fluorine rubber material is introduced, and the rubber has the advantages of excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and the like and has very high buffering performance, however, the device does not fully consider the external leakage of hydraulic oil, and does not consider the solution of external silt and water intruding into the hydraulic system.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a pump truck main oil cylinder piston rod sealing system.

In order to achieve the above purpose, the utility model adopts the following technical scheme: pump truck master cylinder piston rod sealing system, including the uide bushing, uide bushing inner wall sliding connection has the piston rod body, the uide bushing inner wall has set gradually first annular, second annular, third annular, fourth annular, fifth annular, sixth annular, seventh annular, eighth annular from a left side to the right side, the first guide ring of the inboard fixedly connected with of first annular, the inboard fixedly connected with second guide ring of third annular, the inboard joint of eighth annular has the snap ring retaining ring, the uide bushing inner wall has buffering sealing washer, resistant oily heat-resisting pole sealing washer, waterproof sealing washer, antifouling sealing washer, dustproof sealing washer from a left side to right fixedly connected with.

As a further description of the above technical solution:

buffering sealing washer fixed connection is at second ring groove inner wall, the first protection retaining ring of buffering sealing washer inner wall fixedly connected with, buffering sealing washer material is heat-resisting polyurethane.

As a further description of the above technical solution:

the oil-resistant and heat-resistant rod sealing ring is fixedly connected to the inner wall of the fourth ring groove, a second protection retainer ring is fixedly connected to the side wall of the oil-resistant and heat-resistant rod sealing ring, and the oil-resistant and heat-resistant rod sealing ring is made of polyurethane.

As a further description of the above technical solution:

waterproof sealing washer fixed connection is at fifth ring inslot wall, the first skeleton of waterproof sealing washer inner wall fixedly connected with, waterproof sealing washer material is self-lubricating polyurethane.

As a further description of the above technical solution:

antifouling sealing washer fixed connection is at sixth annular inner wall, antifouling sealing washer cross sectional shape is right trapezoid, antifouling sealing washer material is for filling the PTFE material.

As a further description of the above technical solution:

dustproof sealing washer fixed connection is at seventh annular inner wall, the inside fixedly connected with second skeleton, the third skeleton of dustproof sealing washer, the dustproof sealing washer material is general type polyurethane, second skeleton, third skeleton material are the metal.

The utility model discloses following beneficial effect has:

compared with the prior art, the pump truck main oil cylinder piston rod sealing system has the advantages that the buffer sealing ring can buffer impact pressure or pressure change during high load, high-temperature working oil is blocked from flowing to the oil-resistant heat-resistant rod sealing ring, the durability of the oil-resistant heat-resistant rod sealing ring is improved, the service life of the buffer sealing ring can be prolonged due to the first protection retaining ring, the oil-resistant heat-resistant rod sealing ring can prevent working oil from leaking to the outside, the oil-resistant heat-resistant rod sealing ring can effectively avoid the reversion of the oil-resistant heat-resistant rod sealing ring, the waterproof sealing ring can prevent external water from invading, the dustproof sealing ring is provided with the second framework and the third framework which are made of metal materials, most of external silt and particles are effectively prevented from invading, and then the antifouling sealing ring which is designed into a right trapezoid shape is used for scraping fine particles invaded through the dustproof sealing ring, so that the external leakage of hydraulic oil is prevented, and external silt and fine particles are prevented, Particles and water invade the hydraulic system.

Drawings

Fig. 1 is a sectional view of the overall structure of the main cylinder piston rod sealing system of the pump truck of the present invention;

fig. 2 is a sectional view of a guide sleeve structure of a main cylinder piston rod sealing system of the pump truck of the present invention;

fig. 3 is the utility model provides a pump truck master cylinder piston rod sealing system's dustproof sealing ring schematic diagram.

Illustration of the drawings:

1. a guide sleeve; 2. a piston rod body; 3. a first guide ring; 4. a buffer sealing ring; 5. a second guide ring; 6. an oil-resistant and heat-resistant rod sealing ring; 7. a waterproof sealing ring; 8. an antifouling seal ring; 9. a dustproof sealing ring; 10. a first protective retainer ring; 11. a second protective retainer ring; 12. a first skeleton; 13. a second skeleton; 14. a snap ring retainer ring; 15. a third skeleton; 16. a first ring groove; 17. a second ring groove; 18. a third ring groove; 19. a fourth ring groove; 20. a fifth ring groove; 21. a sixth ring groove; 22. a seventh ring groove; 23. and an eighth ring groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the utility model provides a pump truck master cylinder piston rod sealing system: including uide bushing 1, 1 inner wall sliding connection of uide bushing has piston rod body 2, 1 inner wall of uide bushing has set gradually first annular 16 from a left side to the right side, second annular 17, third annular 18, fourth annular 19, fifth annular 20, sixth annular 21, seventh annular 22, eighth annular 23, the inboard fixedly connected with first guide ring 3 of first annular 16, the inboard fixedly connected with second guide ring 5 of third annular 18, the inboard joint of eighth annular 23 has snap ring retaining ring 14, 1 inner wall of uide bushing has buffering sealing washer 4 from a left side to the right fixedly connected with, resistant oily heat-resisting pole sealing washer 6, waterproof sealing washer 7, antifouling sealing washer 8, dustproof sealing washer 9.

Buffer seal 4 fixed connection is at 17 inner walls of second ring groove, the first protection retaining ring 10 of 4 inner wall fixedly connected with of buffer seal, buffer seal 4 material is heat-resisting polyurethane, impulse pressure or pressure variation when the buffer seal 4 that sets up can cushion the high load, block high temperature working oil to resistant oily heat-resisting rod sealing washer 6, improve the durability of resistant oily heat-resisting rod sealing washer 6, first protection retaining ring 10 can improve buffer seal 4's life, when the sealing material that heat-resisting polyurethane shaping article formed was used as the buffer seal of pole sealing system, can prolong the rebound and weaken the leakage life who leads to, heat-resisting limit temperature has been improved.

The oil-resistant and heat-resistant rod sealing ring 6 is fixedly connected to the inner wall of the fourth annular groove 19, a second protection retainer ring 11 is fixedly connected to the side wall of the oil-resistant and heat-resistant rod sealing ring 6, the oil-resistant and heat-resistant rod sealing ring 6 is made of polyurethane, the set oil-resistant and heat-resistant rod sealing ring 6 can prevent working oil from leaking to the outside, and the second protection retainer ring 11 can effectively avoid the reversion of the oil-resistant and heat-resistant rod sealing ring 6.

Waterproof sealing washer 7 fixed connection is at fifth ring groove 20 inner walls, the first skeleton 12 of 7 inner wall fixedly connected with of waterproof sealing washer, and 7 materials of waterproof sealing washer are self-lubricating polyurethane, and waterproof sealing washer 7 adopts to compel tight type seal structure and can prevent that outside water from invading.

Antifouling sealing washer 8 fixed connection is in sixth annular 21 inner wall, and antifouling sealing washer 8 cross sectional shape is right trapezoid, and antifouling sealing washer 8 material is for filling the PTFE material, and the shape design can strike off the tiny granule through dustproof sealing washer 9 invasion for right trapezoid's antifouling sealing washer 8.

Dustproof sealing ring 9 fixed connection is at seventh annular 22 inner wall, and the inside fixedly connected with second skeleton 13 of dustproof sealing ring 9, third skeleton 15, and dustproof sealing ring 9 material is general type polyurethane, and second skeleton 13, the 15 material of third skeleton are the metal, and dustproof sealing ring 9 is provided with second skeleton 13, the third skeleton 15 of metal material, prevents effectively that outside most silt, granule from invading.

The working principle is as follows: impact pressure or pressure change during high load can be buffered through the buffering seal ring 4, high-temperature working oil is blocked from flowing to the oil-resistant and heat-resistant rod seal ring 6, the durability of the oil-resistant and heat-resistant rod seal ring 6 is improved, the service life of the buffering seal ring 4 can be prolonged through the first protection retainer ring 10, the arranged oil-resistant and heat-resistant rod seal ring 6 can prevent working oil from leaking to the outside, the second protection retainer ring 11 can effectively prevent the oil-resistant and heat-resistant rod seal ring 6 from reversing, the waterproof seal ring 7 can prevent external water from invading, the dustproof seal ring 9 is provided with the second framework 13 and the third framework 15 which are made of metal materials, most of silt and particles in the outside are effectively prevented from invading, fine particles invaded through the dustproof seal ring 9 are scraped through the antifouling seal ring 8 with the right trapezoid shape, so that the external leakage of hydraulic oil and the external silt can be prevented, particles and water invade the hydraulic system.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Pump truck master cylinder piston rod sealing system, including uide bushing (1), its characterized in that: guide sleeve (1) inner wall sliding connection has piston rod body (2), guide sleeve (1) inner wall has set gradually first annular (16), second annular (17), third annular (18), fourth annular (19), fifth annular (20), sixth annular (21), seventh annular (22), eighth annular (23) from a left side to the right side, first guide ring (3) of inboard fixedly connected with of first annular (16), inboard fixedly connected with second guide ring (5) of third annular (18), the inboard joint of eighth annular (23) has snap ring retaining ring (14), guide sleeve (1) inner wall has buffering sealing washer (4), resistant oily heat-resisting pole sealing washer (6), waterproof sealing washer (7), antifouling sealing washer (8), dustproof sealing washer (9) from a left side to right fixedly connected with.

2. The pump truck master cylinder piston rod sealing system of claim 1, characterized in that: and the oil-resistant and heat-resistant rod sealing ring (6) is fixedly connected to the inner wall of the fourth annular groove (19).

3. The pump truck master cylinder piston rod sealing system of claim 1, characterized in that: and the side wall of the oil-resistant and heat-resistant rod sealing ring (6) is fixedly connected with a second protective check ring (11).

4. The pump truck master cylinder piston rod sealing system of claim 1, characterized in that: the oil-resistant and heat-resistant rod sealing ring (6) is made of polyurethane.

5. The pump truck master cylinder piston rod sealing system of claim 1, characterized in that: waterproof sealing washer (7) fixed connection is in fifth annular (20) inner wall, first skeleton (12) of waterproof sealing washer (7) inner wall fixedly connected with, waterproof sealing washer (7) material is self-lubricating polyurethane.