CN214889050U

CN214889050U - Pilot valve

Info

Publication number: CN214889050U
Application number: CN202121440370.9U
Authority: CN
Inventors: 徐兆锁; 原成昆; 原凯伦
Original assignee: Yingkou Chengyuan Machinery Equipment Co ltd
Current assignee: Yingkou Chengyuan Machinery Equipment Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-11-26
Anticipated expiration: 2031-06-28

Abstract

The utility model discloses a pilot valve, which comprises a valve body, the last lateral wall fixed mounting of valve body has the cylinder, the piston department fixed mounting of cylinder has the valve rod, the lateral wall of valve rod has seted up K1 hole, K2 hole, K3 hole and K4 hole from top to bottom, K1 hole and K2 hole intercommunication, and K3 hole and K4 hole intercommunication, the even embedding of inside wall of valve body installs the valve barrel, the inside wall of going up the valve barrel has seted up high-pressure chamber, the inside wall of middle part valve barrel has seted up drainage chamber, the inside wall of valve body has seted up upper control chamber, the inside wall of lower side valve barrel has seted up lower control chamber, the utility model discloses a slidingtype structure that cylinder and valve rod constitute, and K1 hole, K2 hole, K3 hole, K4 hole and high-pressure chamber, drainage chamber, the cooperation of upper control chamber and lower control chamber, can effectively realize the work of pilot valve, and greatly reduce the wearing and tearing of aquatic miscellaneous pair part, do not have the design of disk seat simultaneously, the manufacturing cost of the device is lower, and the service life of the valve is finally prolonged.

Description

Pilot valve

Technical Field

The utility model belongs to the technical field of the pilot valve, a pilot valve is provided very much.

Background

In order to improve the surface quality of steel, a high-pressure water descaling process is carried out before rolling steel billets in the production of hot rolled strip steel and hot rolled medium plates, namely, oxide scales generated on the surfaces of the steel billets due to heating are removed completely by high-pressure water, a device for removing the oxide scales on the surfaces of the steel billets by using the high-pressure water is called as a high-pressure water descaling system, the descaling of the hot rolled strip steel and the hot rolled medium plates has large water consumption, so that gas-liquid contact type energy accumulators are adopted in the high-pressure water descaling system, and minimum liquid level valves are arranged at water inlets and water outlets (which are the same interface) of the energy accumulators.

At present, as the supporting pilot valve that uses of minimum liquid level valve, sealed face all is the hard seal that adopts the conical surface between its case and disk seat, this kind of structure will be higher to quality of water, the wearing and tearing of sealing member will appear to impurity slightly, thereby appear leaking, influence the life of whole valve, the processing degree of difficulty of conical surface hard seal is higher in addition, cause the manufacturing cost of valve to increase, if can design a no valve seat, and adopt the pilot valve of slidingtype structural operation reduction wearing and tearing, just can solve this type of problem, for this reason, we propose the pilot valve.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a pilot valve.

In order to achieve the above object, the utility model adopts the following technical scheme: the pilot valve, including the valve body, the last lateral wall fixed mounting of valve body has the cylinder, the piston department fixed mounting of cylinder has the valve rod, K1 holes, K2 holes, K3 holes and K4 holes have been seted up downwards from the top to the lateral wall of valve rod, K1 holes and K2 hole intercommunication, and K3 holes and K4 hole intercommunication, the valve barrel is installed in the even embedding of inside wall of valve body, and the valve rod runs through the valve barrel, the upside the high-pressure chamber has been seted up to the inside wall of valve barrel, the middle part drainage chamber has been seted up to the inside wall of valve barrel, the control chamber has been seted up to the inside wall of valve body, the downside the control chamber has been seted up down to the inside wall of valve barrel, and the control chamber is linked together with last control chamber down.

Further, the upper control cavity is fixedly communicated with a control port through a pipeline, the high-pressure cavity is fixedly communicated with a high-pressure water inlet through a pipeline, and the drainage cavity is fixedly communicated with a drainage outlet through a pipeline.

Further, the K1 hole is always positioned in the high-pressure cavity, and the K4 hole is always positioned in the lower control cavity.

Furthermore, the inner side wall of the valve sleeve is uniformly provided with a sealing ring.

Use the utility model discloses a beneficial effect is: the utility model discloses a slidingtype structure that cylinder and valve rod are constituteed, and K1 holes, K2 holes, K3 holes, K4 holes and high-pressure chamber, drainage chamber, go up the cooperation in control chamber and lower control chamber, can effectively realize the work of pilot valve, and greatly reduced aquatic impurity is to the wearing and tearing of part, does not have the design of disk seat simultaneously, makes the manufacturing cost of this device lower, has finally improved the life of valve.

Drawings

Fig. 1 is a front sectional view of the present invention.

The reference numerals include: 1. the valve comprises a valve body, a cylinder, a valve rod, 4 and K1 holes, 5 and K2 holes, 6 and K3 holes, 7 and K4 holes, 8 and a valve sleeve, 9 and a high-pressure cavity, 10 and a drainage cavity, 11 and an upper control cavity, 12 and a lower control cavity, 13 and a control port, 14 and a high-pressure water inlet, 15 and a drainage port.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

Referring to fig. 1, the pilot valve includes a valve body 1, an air cylinder 2 is fixedly installed on an upper side wall of the valve body 1, an electromagnetic valve is fixedly installed on a left side of the air cylinder 2 and used for controlling a flow direction of air flowing into the air cylinder 2, so as to control movement of a piston in the air cylinder 2, a valve rod 3 is fixedly installed at a piston position of the air cylinder 2, the movement of the piston in the air cylinder 2 can drive the valve rod 3 to move together, a K1 hole 4, a K2 hole 5, a K3 hole 6 and a K4 hole 7 are formed in an outer side wall of the valve rod 3 from top to bottom, the K1 hole 4 is communicated with the K2 hole 5, and the K3 hole 6 is communicated with the K4 hole 7, as shown in fig. 1, at this time, the K1 hole 4 and the K2 hole 5 are located at a high pressure chamber 9, the K3 hole 6 is located at a water discharge chamber 10, the K4 hole is located at a lower control chamber 12, communication between the water discharge chamber 10 and the lower control chamber 12 is realized, water cut-off of the main valve control pipeline is realized, after the piston in the air cylinder 2 drives the valve rod 3 to move down, the K1 hole is located at the high pressure chamber 9, make K2 hole 5 be located control chamber 11 department, make K3 hole 6 and K4 hole 7 be located control chamber 12 department down, realize the intercommunication of high-pressure chamber 9 and last control chamber 11, realize the water supply of main valve control pipeline, valve housing 8 is installed in the even embedding of the inside wall of valve body 1, and valve rod 3 runs through valve housing 8, high-pressure chamber 9 has been seted up to the inside wall of upside valve housing 8, high-pressure chamber 9 finally connects the system high pressure water pipe way, drainage chamber 10 has been seted up to the inside wall of middle part valve housing 8, drainage chamber 10 finally connects the system drainage pipe way, upper control chamber 11 has been seted up to the inside wall of valve body 1, upper control chamber 11 is located the position between the surplus drainage chamber 10 of high-pressure chamber 9, lower control chamber 12 has been seted up to the inside wall of downside valve housing 8, and lower control chamber 12 is linked together with upper control chamber 11, upper control chamber 11 and lower control chamber 12 finally connect the main valve control pipeline.

Specifically, the upper control chamber 11 is fixedly communicated with a control port 13 through a pipeline, and is communicated with a main valve control pipeline through the control port 13, the high pressure chamber 9 is fixedly communicated with a high pressure water inlet 14 through a pipeline, and is communicated with a system high pressure water pipeline through the high pressure water inlet 14, and the drainage chamber 10 is fixedly communicated with a drainage port 15 through a pipeline, and is communicated with a system drainage pipeline through the drainage port 15.

Specifically, the hole 4K 1 is always positioned in the high-pressure cavity 9, and the hole 7K 4 is always positioned in the lower control cavity 12, so that the smooth operation of water supply and water cut-off of the main valve control pipeline is ensured.

Particularly, the inside wall of valve barrel 8 evenly is provided with the sealing ring, realizes sealed effect, avoids appearing leaking.

The working principle is as follows: when the main valve control pipeline needs to supply water, the electromagnetic valve is electrified to compress air to enter an inner upper cavity of the cylinder 2 to push the piston and the valve rod 3 to move downwards, when the piston and the valve rod are moved to the lowest side position, a K1 hole 4 on the valve rod 3 is positioned at a high-pressure cavity, a K2 hole 5 is moved downwards to an upper control cavity 11, and meanwhile, a K3 hole 6 and a K4 hole 7 are positioned at a lower control cavity 12, and as the K1 hole 4 is communicated with the K2 hole 5, high-pressure water in the high-pressure cavity 9 can flow to the main valve control pipeline through the upper control cavity 11; when the main valve control pipeline needs to cut off water, the solenoid valve is electrified to compress air to enter the lower cavity in the cylinder 2 to push the piston and the valve rod 3 to move upwards, when the piston and the valve rod are moved to the uppermost position, the K4 hole 7 on the valve rod 3 is positioned at the lower control cavity 12, the K3 hole 6 is moved upwards to the drainage cavity 10, meanwhile, the K1 hole 4 and the K2 hole 5 are positioned at the high-pressure cavity 9, and as the K3 hole 6 is communicated with the K4 hole 7, high-pressure water in the control cavity flows to a system drainage pipeline through the drainage cavity 10.

The above description is only a preferred embodiment of the present invention, and many changes can be made in the detailed description and the application scope according to the idea of the present invention for those skilled in the art, which all belong to the protection scope of the present invention as long as the changes do not depart from the concept of the present invention.

Claims

1. Pilot valve, including valve body (1), its characterized in that: an air cylinder (2) is fixedly arranged on the upper side wall of the valve body (1), a valve rod (3) is fixedly arranged at the piston of the air cylinder (2), the outer side wall of the valve rod (3) is provided with a K1 hole (4), a K2 hole (5), a K3 hole (6) and a K4 hole (7) from top to bottom, the K1 hole (4) is communicated with a K2 hole (5), and the K3 hole (6) is communicated with the K4 hole (7), the inner side wall of the valve body (1) is evenly embedded with a valve sleeve (8), the valve rod (3) penetrates through the valve sleeve (8), the inner side wall of the valve sleeve (8) at the upper side is provided with a high-pressure cavity (9), the inner side wall of the valve sleeve (8) at the middle part is provided with a drainage cavity (10), an upper control cavity (11) is formed in the inner side wall of the valve body (1), a lower control cavity (12) is formed in the inner side wall of the valve sleeve (8) on the lower side, and the lower control cavity (12) is communicated with the upper control cavity (11).

2. A pilot valve as claimed in claim 1, wherein: the upper control cavity (11) is fixedly communicated with a control port (13) through a pipeline, the high-pressure cavity (9) is fixedly communicated with a high-pressure water inlet (14) through a pipeline, and the drainage cavity (10) is fixedly communicated with a drainage port (15) through a pipeline.

3. A pilot valve as claimed in claim 1, wherein: the K1 hole (4) is always positioned in the high-pressure cavity (9), and the K4 hole (7) is always positioned in the lower control cavity (12).

4. A pilot valve as claimed in claim 1, wherein: and the inner side wall of the valve sleeve (8) is uniformly provided with a sealing ring.