CN219062635U

CN219062635U - High vacuum fine tuning valve

Info

Publication number: CN219062635U
Application number: CN202223585388.5U
Authority: CN
Inventors: 盛一冰; 何善良; 姚勇
Original assignee: Ningbo Instrument Valve Factory
Current assignee: Ningbo Instrument Valve Factory
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-23
Anticipated expiration: 2032-12-31

Abstract

The utility model discloses a high vacuum fine tuning valve, which comprises a valve body and a valve head, wherein an air outlet is arranged on the valve head, an air inlet is arranged on the valve body, and a connecting piece is arranged between the valve body and the valve head, so that the valve head can be replaced.

Description

High vacuum fine tuning valve

Technical Field

The utility model relates to the technical field of valves, in particular to a high-vacuum fine tuning valve.

Background

The vacuum fine tuning valve is used for inflating the vacuum system and accurately adjusting the air inflow rate so as to control and adjust the vacuum degree in the system, and applicable working mediums are air without particle dust and non-corrosive gas, and the vacuum fine tuning valve is widely applied to industries such as petroleum, natural gas, nuclear industry, power stations, ships, metallurgy, heavy machinery, scientific research institutes and the like. The vacuum fine tuning valve has a very wide application range and a very wide application range.

The vacuum degree value in the vacuum fine adjustment valve adjusting device in the current market is mostly two modes: the valve needle lifting mechanism is completed by taking a hand rotation adjusting knob as power and driving the valve needle to lift through screw transmission. The medium of the valve is air or a few corrosive gases; the other is to adjust the gap length of the taper needle and the hole by screw transmission, change the valve seat conductance value, be used for inflating into the vacuum system and can accurately adjust the air inflow rate so as to control and adjust the vacuum degree in the system, and the applicable working medium is air without particle dust and non-corrosive gas.

However, during the use process, the valve body is often in fault, such as blockage of a vent hole, poor tightness of the valve body, or fault of the valve head, and the valve body or the valve head needs to be maintained or replaced at the moment.

Disclosure of Invention

The utility model aims to provide a high-vacuum fine tuning valve, which is convenient for replacing a valve head by being provided with a connecting piece.

In order to solve the problems, the utility model provides a high vacuum fine tuning valve which comprises a valve body and a valve head, wherein an air outlet is formed in the valve head, an air inlet is formed in the valve body, and a connecting piece is arranged between the valve body and the valve head, so that the valve head can be replaced. Through setting up the connecting piece between valve body and valve head, when valve head or valve body break down, accessible connecting piece separates valve head and valve body to change, thereby avoid whole valve to change the economic loss that brings, improve the utilization ratio.

Preferably, the connecting piece comprises a fixing seat fixedly arranged on the valve body, a connecting seat is arranged on the valve head, and the fixing seat is detachably connected with the connecting seat. Therefore, the utility model has strong practicability and convenience, simple structure and convenient operation, and the arrangement of the connecting seat and the fixing seat ensures that the valve body can be detached for maintenance or replacement under the condition of not influencing the working condition of the vacuum device when the valve body fails, thereby greatly improving the operability.

Preferably, the connecting seat and the fixing seat are respectively provided with a connecting screw hole, and the fastening screw passes through the connecting seat and the connecting screw holes on the fixing seat and then is in threaded connection with the nuts, so that the fixing seat and the connecting seat are fixed. The detachable fixed connection mode of the connection screw hole and the nut is in threaded connection, so that the purposes of simple structure, reliable connection and convenient assembly and disassembly are realized.

Preferably, a positioning step is arranged at one end, far away from the air outlet, of the valve head, a lapping platform is arranged on the connecting seat, and when the valve head is fixed with the valve body, the positioning step is lapped on the lapping platform. The valve positioning device adopts a mode of positioning the valve by matching the positioning step with the lapping table, so that the fixing efficiency can be further improved, and the positioning accuracy and precision can be improved.

Preferably, a gasket is provided between the valve body and the valve head. The sealing gasket can fill the unevenness of the joint surface of the valve body and the valve head by using the elastic deformation of the sealing gasket, cut off the leakage passage and increase the leakage resistance.

Preferably, seal grooves are formed in the end faces of the valve head and the valve body, and when the valve head and the valve body are fixed, a seal cavity for placing a sealing gasket is formed by the seal grooves in the valve body and the seal grooves in the valve body.

Preferably, sealing rubber is fixedly arranged on the inner side wall of the connecting seat. The sealing rubber not only can seal the gap of the air overflow at the inner side of the connecting seat, but also can prevent the outside air from invading the inside of the connecting seat, thereby ensuring the tightness of the valve.

Preferably, the diameter of the air inlet is equal to the diameter of the air outlet. The diameter of the air inlet is the same as that of the air outlet, and the air inlet is applicable to pipelines with the same size.

Drawings

FIG. 1 is a schematic diagram of a high vacuum trim valve according to the present utility model;

fig. 2 is an enlarged schematic view of fig. 1.

In the figure: a valve body 100; a valve head 101; an air outlet 102; an air inlet 103; a holder 104; a connection base 105; positioning step 106; a landing 107; a gasket 108; a seal groove 109; and a sealing rubber 110.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

As shown in fig. 1 and 2, the present utility model provides a high vacuum fine tuning valve, which comprises a valve body 100 and a valve head 101, wherein an air outlet 102 is arranged on the valve head 101, an air inlet 103 is arranged on the valve body 100, and a connecting piece is arranged between the valve body 100 and the valve head 101, so that the valve head 101 can be replaced. Through setting up the connecting piece between valve body 100 and valve head 101, when needle or valve body 100 break down, accessible connecting piece separates valve head 101 and valve body 100 to change, thereby avoid the economic loss that whole valve changed and bring, improve the utilization ratio.

In this embodiment, the connecting piece includes a fixed seat 104 fixedly disposed on the valve body 100, a connecting seat 105 is disposed on the valve head 101, the fixed seat 104 is detachably connected with the connecting seat 105, the connecting piece includes the fixed seat 104 and the connecting seat 105 which are detachably connected, and can be conveniently detached and replaced, and the connecting seat 105 and the fixed seat 104 are both provided with connecting screw holes, the fastening screw passes through the connecting screw holes on the connecting seat 105 and the fixed seat 104 and then is in threaded connection with the nut, the fixed seat 104 and the connecting seat 105 are fixed, and the purposes of simple structure, reliable connection and convenient assembly and disassembly are realized by a detachable fixed connection mode of the connecting screw hole and the nut.

In this embodiment, a positioning step 106 is provided at one end of the valve head 101 away from the air outlet 102, a landing 107 is provided on the connection seat 105, and when the valve head 101 is fixed to the valve body 100, the positioning step 106 is caught on the landing 107. The utility model adopts the mode of positioning the valve by matching the positioning step 106 with the lapping table 107, thereby further improving the fixing efficiency, improving the positioning accuracy and precision, arranging the sealing gasket 108 between the valve body 100 and the valve head 101, filling the unevenness at the joint surface of the valve body 100 and the valve head 101 by the elastic deformation of the sealing gasket 108, cutting off the leakage passage and increasing the leakage resistance.

In this embodiment, seal grooves 109 are formed on the end surfaces of the valve head 101 and the valve body 100, and when the valve head 101 and the valve body 100 are fixed, the seal grooves 109 on the valve body 100 and the seal grooves 109 on the valve body 100 enclose a seal cavity for placing a seal gasket 108, and a seal rubber 110 is fixedly arranged on the inner side wall of the connecting seat 105. The sealing rubber 110 not only can close the gap of the inside air overflow of the connecting seat 105, but also can prevent the outside air from invading the inside of the connecting seat 105, thereby ensuring the sealing performance of the valve.

In this embodiment, the diameter of the air inlet 103 is the same as the diameter of the air outlet 102, and can be applied to pipes of the same size.

In summary, the utility model has the following advantages: through being provided with the connecting piece, have very strong practicality and convenience, simple structure and convenient operation, and the setting of connecting seat and fixing base for the valve body when breaking down, can be under the working condition that does not influence vacuum apparatus, can lift off maintenance or change, great improvement maneuverability.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. The utility model provides a high vacuum fine setting valve, its characterized in that includes valve body (100) and valve head (101), be provided with gas outlet (102) on valve head (101), be provided with air inlet (103) on valve body (100), valve body (100) with be provided with the connecting piece between valve head (101) for valve head (101) are removable.

2. The high vacuum fine tuning valve according to claim 1, wherein the connecting piece comprises a fixing seat (104) fixedly arranged on the valve body (100), a connecting seat (105) is arranged on the valve head (101), and the fixing seat (104) is detachably connected with the connecting seat (105).

3. The high vacuum fine tuning valve according to claim 2, wherein the connecting seat (105) and the fixing seat (104) are respectively provided with a connecting screw hole, and the fastening screw passes through the connecting screw holes on the connecting seat (105) and the fixing seat (104) and then is screwed with a nut, so that the fixing seat (104) and the connecting seat (105) are fixed.

4. The high vacuum fine tuning valve according to claim 1, wherein a positioning step (106) is provided at an end of the valve head (101) away from the air outlet (102), a landing (107) is provided on the connection base (105), and the positioning step (106) is caught on the landing (107) when the valve head (101) is fixed with the valve body (100).

5. A high vacuum trim valve as claimed in claim 1, wherein a gasket (108) is provided between the valve body (100) and the valve head (101).

6. The high vacuum fine tuning valve according to claim 1, wherein sealing grooves (109) are formed on end surfaces of the valve head (101) and the valve body (100), and when the valve head (101) and the valve body (100) are fixed, the sealing grooves (109) on the valve body (100) and the sealing grooves (109) on the valve body (100) enclose a sealing cavity in which a sealing gasket (108) is placed.

7. The high vacuum fine tuning valve as claimed in claim 1, wherein the inner side wall of the connection base (105) is fixedly provided with a sealing rubber (110).

8. A high vacuum trim valve as defined in claim 1, wherein the diameter of the air inlet (103) is equal to the diameter of the air outlet (102).