CN214742013U

CN214742013U - High-pressure plunger pump valve seat and high-pressure plunger pump using same

Info

Publication number: CN214742013U
Application number: CN202023290630.7U
Authority: CN
Inventors: 康永兴; 李江龙; 周至富
Original assignee: Beijing Xietong Innovation Food Technology Co ltd
Current assignee: Beijing Xietong Innovation Food Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-11-16
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a high-pressure plunger pump disk seat and use high-pressure plunger pump of this disk seat. The utility model discloses a disk seat improves traditional whole type disk seat for split type, and the case portion that will easily wear and tear is separately with the disk seat body. When the sealing surface of the valve seat is worn and needs to be replaced, only the valve core part needs to be replaced. In addition, the valve core part can also be processed by adopting wear-resistant materials such as hard alloy or ceramics. The utility model discloses a disk seat design, the cost of maintenance can be changed by greatly reduced to can prolong the life of whole disk seat by a wide margin.

Description

High-pressure plunger pump valve seat and high-pressure plunger pump using same

Technical Field

The utility model belongs to the technical field of the high-pressure pump, especially, high-pressure plunger pump technique.

Background

The high-pressure plunger pump realizes liquid suction and liquid pressing by changing the volume of the sealed working cavity through the reciprocating motion of the plunger in the cylinder body, and has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like. The device is widely applied to working occasions of high pressure, large flow and the like. In high pressure plunger pumps, the valve seat is one of the key core components. The structural design of the valve seat and the use of high-strength materials have important influence on the continuous stable operation of the high-pressure pump.

Traditionally, high pressure plunger pumps are designed for use with media such as clean water, oil, etc. However, under the use condition that the medium contains particles, the abrasion of the sealing surface of the valve seat is intensified, and the service life of the valve seat is greatly shortened. Although this can be mitigated by replacing the stronger alloy material, wear and erosion of the valve seat surface still exists due to the presence of particles in the media, which also increases pressure fluctuations and affects the operational stability of the plunger pump. Therefore, frequent replacement of the new valve seat can significantly increase the cost of use and maintenance of the high pressure plunger pump.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses specific technical scheme as follows:

the utility model provides a high pressure plunger pump disk seat, its characterized in that includes disk seat body 1, case 2, feed liquor hole 3, flowing back passageway 4, case 2 is located disk seat body 1's middle part, and with disk seat body 1 fastening, case 2 is inside to have feed liquor channel 5, feed liquor channel 5 with feed liquor hole 3 intercommunication.

Further, the valve core 2 is fastened with the valve seat body 1 in a threaded manner.

Further, the hardness of the material of the valve element 2 is higher than that of the material of the valve seat body 1.

Further, the valve core 2 is made of one or two of hard alloy and ceramic.

Further, the valve core 2 and the valve seat body 1 are sealed through a sealing ring 6.

Further, the valve core 2 and the valve seat body 1 are sealed through a conical surface structure.

A high pressure plunger pump, the high pressure plunger pump valve seat of any one of the above.

Traditionally, the valve seat adopted by the high-pressure plunger pump is integral, and a plurality of liquid inlet holes are annularly arranged on the top sealing surface of the valve seat body. The medium is sucked in from the side of the valve seat through the liquid inlet channel. The valve plate of the plunger pump is located on the upper portion of the valve seat, the outer diameter of the valve plate is larger than the annular outer diameter formed by the liquid inlet hole, and when the sealing surface of the valve plate and the valve seat is closed, the valve plate can cover all the liquid inlet holes to close the liquid inlet holes.

When the medium contains particles, when the valve plate is closed, particles can remain on the sealing surface between the valve plate and the valve seat, and great pressure is generated on the sealing surface of the valve seat, so that small sunken abrasion is generated on the sealing surface of the valve seat. After wearing and tearing produced, can influence the closed effect of valve plate, lead to in partial liquid backward flow to inlet channel for pressure produces undulantly. Therefore, the valve seat needs to be frequently replaced to achieve stable pressure use, thereby increasing high maintenance costs. Only the surface of the sealing surface on the valve seat is abraded, and the rest parts of the valve seat are intact.

In view of the above problem, the utility model discloses the structure to the valve seat is improved, improves integral valve seat for split type structure. The valve core part with the sealing surface is separated from the valve seat body, when the sealing surface of the valve seat is abraded, only the valve core part with the sealing surface needs to be replaced, and the valve seat body does not need to be replaced, so that the maintenance cost of the valve seat is greatly reduced. On the other hand, through split type structural design, can utilize the higher material of hardness to process the valve core part, for example carbide material or ceramic material etc. can improve the life of valve seat greatly. Meanwhile, the usage amount of the high-hardness material is relatively low, and the production cost can be greatly reduced.

Drawings

Fig. 1 is a sectional view of a valve seat designed in embodiment 1 of the present invention. Wherein, 1 is the disk seat body, 2 is the case, 3 is the feed liquor hole, 4 is the drainage channel, 5 is the feed liquor channel, 6 is the sealing washer, 7 is the valve plate.

Fig. 2 is a sectional view of a valve seat designed in embodiment 2 of the present invention. Wherein 201 is the valve seat body, 202 is the case, 203 is the feed liquor hole, 204 is the drainage channel, 205 is the feed liquor channel, 207 is the valve plate, 208 is the conical surface structure.

Detailed Description

Example 1

A valve seat of a high-pressure plunger pump is shown in figure 1 and comprises a valve seat body 1, a valve core 2, a liquid inlet hole 3, a liquid discharge channel 4, a liquid inlet channel 5 and a sealing ring 6. The valve core 2 is fastened with the valve seat body 1 in a thread mode, and the liquid drainage channel 4 and the liquid inlet channel 5 are sealed through the sealing ring 6. The valve core 2 is made of zirconia ceramic material, when the sealing surface of the valve core is seriously worn and needs to be replaced, the old valve core is detached from the valve seat body 1, and a new valve core is replaced.

Example 2

A valve seat of a high-pressure plunger pump is shown in figure 2 and comprises a valve seat body 201, a valve core 202, a liquid inlet hole 203, a liquid discharge channel 204, a liquid inlet channel 205 and a conical surface structure 208. The valve core 202 is fastened with the valve seat body 201 in a threaded mode, and sealing between the liquid discharge channel 204 and the liquid inlet channel 205 is achieved through the conical surface structure 208. The valve element 202 is made of cobalt-based hard alloy material, and when the sealing surface of the valve element is seriously worn and needs to be replaced, the old valve element is detached from the valve seat body 201, and a new valve element is replaced.

The embodiments of the present invention have been described in detail, but the embodiments are merely examples for easy understanding and explanation, and should not be construed as limitations of the present invention. Any person skilled in the art can implement the preferred embodiments according to the technical solution of the present invention, but all such modifications belong to the scope of the claims of the present invention.

Claims

1. The utility model provides a high pressure plunger pump disk seat, its characterized in that includes disk seat body (1), case (2), feed liquor hole (3), drainage channel (4), case (2) are located the middle part of disk seat body (1), and with disk seat body (1) fastening, case (2) inside has feed liquor channel (5), feed liquor channel (5) with feed liquor hole (3) intercommunication.

2. The high pressure plunger pump valve seat according to claim 1, wherein: the valve core (2) and the valve seat body (1) are fastened in a threaded mode.

3. The high pressure plunger pump valve seat according to claim 1, wherein: the hardness of the material of the valve core (2) is higher than that of the material of the valve seat body (1).

4. The high pressure plunger pump valve seat according to claim 1, wherein: the valve core (2) is made of one or two of hard alloy or ceramic.

5. The high pressure plunger pump valve seat according to claim 1, wherein: the valve core (2) and the valve seat body (1) are sealed through a sealing ring (6).

6. The high pressure plunger pump valve seat according to claim 1, wherein: the valve core (2) and the valve seat body (1) are sealed through a conical surface structure.

7. A high pressure plunger pump, characterized by: the high-pressure plunger pump valve seat according to any one of claims 1 to 6 is adopted.