CN111271473A

CN111271473A - Intelligent pneumatic bellows cut-off valve

Info

Publication number: CN111271473A
Application number: CN202010241957.0A
Authority: CN
Inventors: 毛春龙; 毛金根; 陈善俊
Original assignee: Jiangsu Jinshengyuan Special Valve Co ltd
Current assignee: Jiangsu Jinshengyuan Special Valve Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-06-12

Abstract

The invention discloses an intelligent pneumatic bellows cut-off valve which comprises a valve body, a valve seat and a valve rod, wherein the valve seat is fixedly arranged in the middle of the valve body, a valve clack is fixedly arranged above the valve seat, the valve rod is vertically arranged on the valve clack, a valve clack cover is arranged at the joint of the valve rod and the valve clack, a valve cover is also arranged above the valve body, a sealing gasket is arranged between the valve body and the valve cover, a bellows assembly is arranged between the valve rod and the valve cover, a filler bin is arranged above the bellows assembly, a filler layer is arranged in the filler bin, a filler gland is arranged above the filler bin, and the filler gland and the valve cover are locked and connected through a locking bolt.

Description

Intelligent pneumatic bellows cut-off valve

Technical Field

The invention relates to the technical field of cut-off valves, in particular to an intelligent pneumatic corrugated pipe cut-off valve.

Background

The cut-off valve is one of the pneumatic actuators in the automatic system, is composed of a multi-spring pneumatic film pneumatic actuator or a floating piston pneumatic actuator and a regulating valve, receives the signal of a regulating instrument and controls the cut-off, the connection or the switching of the fluid in the process pipeline. The device has the characteristics of simple structure, sensitive response, reliable action and the like. Can be widely applied to industrial production departments such as petroleum, chemical industry, metallurgy and the like. The source of the pneumatic shut-off valve requires filtered compressed air and the media flowing through the valve body should be contaminant-free and particle-free liquids and gases. According to the allowable differential pressure condition, medium characteristics and process pipeline requirements, a single seat, a sleeve and a three-way cut-off valve can be selected.

The reliability of the operation of the shut-off valve depends to a large extent on the correct choice of the material of construction and of the material that is perfectly suitable for its operating conditions, and on the operating conditions. If the cut-off valve can only work under two states, fully open or fully closed. When the flap is in the middle position in the valve seat, a large flow velocity is generated due to a large pressure drop, which creates a cavitation condition, causing erosion, damaging the sealing surfaces of the flap and the valve seat, with the result that the tightness of the closure member is lost, and the initially small leak quickly becomes a large leak under the action of the leakage medium on the metal.

The pneumatic cut-off valve, also called as a pneumatic cut-off valve, is one of the executing mechanisms in the automatic system, consists of a multi-spring pneumatic film executing mechanism or a floating piston executing mechanism and a regulating valve, receives the signal of a regulating instrument and controls the cut-off, the connection or the switching of fluid in a process pipeline. The device has the characteristics of simple structure, sensitive response, reliable action and the like. Can be widely applied to industrial production departments such as petroleum, chemical industry, metallurgy and the like. The source of the pneumatic shut-off valve requires filtered compressed air and the media flowing through the valve body should be contaminant-free and particle-free liquids and gases. The current electric cut-off valve for the corrugated pipe has certain automation performance, but has low control efficiency, so the improvement is needed.

Disclosure of Invention

The invention aims to provide an intelligent pneumatic bellows cut-off valve to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: an intelligent pneumatic bellows cut-off valve comprises a valve body, a valve seat and a valve rod, wherein the valve seat is fixedly installed in the middle of the valve body, a valve clack is fixedly installed above the valve seat, the valve rod is vertically arranged on the valve clack, a valve clack cover is installed at the joint of the valve rod and the valve clack, a valve cover is also installed above the valve body, a sealing gasket is installed between the valve body and the valve cover, a bellows assembly is installed between the valve rod and the valve cover, a filler bin is arranged above the bellows assembly, a filler layer is arranged in the filler bin, a filler gland is installed above the filler bin, and the filler gland and the valve cover are; the valve cover is characterized in that a supporting plate is installed on one side of the valve cover, an upright post is vertically installed on the supporting plate, and the upright post is fixedly connected with the supporting plate through a bolt.

Preferably, a guide connecting block is further installed between the upright post and the valve rod.

Preferably, the pneumatic actuator is arranged at the end part of the upright post and the valve rod and controls the up-and-down movement of the valve rod.

Preferably, seal gasket includes the gasket body, gasket body both sides are equipped with protruding edge, are the hunch-up structure between two protruding edges, protruding edge surface equipartition has a plurality of hemispheric archs, the gasket body adopts the rubber material to make.

Preferably, the using method comprises the following steps:

A. when the corrugated pipe needs to be closed, firstly, an external controller sends a closing instruction to a pneumatic actuating mechanism;

B. the pneumatic actuating mechanism controls the valve rod to work, and the valve rod moves downwards along the upright post through the guide connecting block;

C. the valve rod drives the valve clack below to move downwards, and when the valve clack is contacted with the valve seat, the pneumatic actuating mechanism stops working to shut off the corrugated pipe;

D. similarly, if the valve needs to be opened, the external controller sends an opening instruction to the pneumatic actuating mechanism, the pneumatic actuating mechanism controls the valve rod to work, and the valve rod moves upwards along the upright post through the guide connecting block;

E. the valve rod drives the valve clack below to move upwards, and when the valve clack is separated from the valve seat, the pneumatic actuating mechanism stops working to open the corrugated pipe.

Compared with the prior art, the invention has the beneficial effects that:

(1) the corrugated pipe cutting device is novel in structural design and convenient to operate, can quickly control cutting operation, and improves the cutting efficiency of the corrugated pipe; the valve rod is electrically controlled to move up and down through the pneumatic actuating mechanism, and the control efficiency is effectively improved.

(2) The sealing gasket adopted by the invention has good toughness and is not easy to deform, and the sealing performance after the valve body is connected with the valve cover can be improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the gasket seal of the present invention.

In the figure: the pneumatic valve comprises a valve body 1, a valve seat 2, a valve clack 3, a valve clack cover 4, a sealing gasket 5, a valve cover 6, a corrugated pipe assembly 7, a packing layer 8, a packing gland 9, a valve rod 10, a stand column 11, a guide connecting block 12, a pneumatic actuating mechanism 13, a gasket body 14, a convex edge 15, an arch structure 16 and a hemispherical bulge 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: the utility model provides a pneumatic bellows trip valve of intelligence, includes valve body 1, disk seat 2 and valve rod 10, middle part fixed mounting disk seat 2 is gone up to valve body 1, disk seat 2 top fixed mounting has valve clack 3, valve rod 10 locates valve clack 3 immediately,

valve rod

10 and 3 junctions of valve clack are installed valve clack lid 4, valve body 6 is still installed to 1 top, just install seal gasket 5 between valve body 1 and the valve bonnet 6, install bellows subassembly 7 between valve rod 10 and the valve bonnet 6, just bellows subassembly 7 top sets up the filler storehouse, set up packing layer 8 in the filler storehouse, gland 9 is installed to the filler storehouse top, be connected through the locking bolt locking between gland 9 and the valve bonnet 6.

According to the invention, a supporting plate is arranged on one side of a valve cover 6, an upright post 11 is vertically arranged on the supporting plate, and the upright post 11 is fixedly connected with the supporting plate through a bolt; a guide connecting block 12 is also arranged between the upright post 11 and the valve rod 10. The guide connecting block can ensure that the valve rod moves vertically.

The invention further comprises a pneumatic actuator 13, wherein the pneumatic actuator 13 is installed at the end parts of the upright post 11 and the valve rod 10, and the pneumatic actuator 13 controls the valve rod 10 to move up and down. The pneumatic cut-off valve has the function of quick cut-off and has the characteristics of simple structure, sensitive response, reliable action and the like. Can be widely applied to industrial production departments such as petroleum, chemical industry, metallurgy and the like. The source of the pneumatic shut-off valve requires filtered compressed air and the media flowing through the valve body should be contaminant-free and particle-free liquids and gases. The pneumatic cut-off valves are classified into a common pneumatic cut-off valve and a quick emergency pneumatic cut-off valve.

In addition, in the invention, the sealing gasket 5 comprises a gasket body 14, convex edges 15 are arranged on two sides of the gasket body 14, an arch structure 16 is arranged between the two convex edges 15, a plurality of hemispherical bulges 17 are uniformly distributed on the surfaces of the convex edges 15, and the gasket body 14 is made of rubber materials. The sealing gasket adopted by the invention has good toughness and is not easy to deform, and the sealing performance after the valve body is connected with the valve cover can be improved.

The working principle is as follows: the using method of the invention comprises the following steps:

In conclusion, the corrugated pipe cutting device is novel in structural design and convenient to operate, can quickly control cutting operation, and improves the cutting efficiency of the corrugated pipe; the valve rod is electrically controlled to move up and down through the pneumatic actuating mechanism, and the control efficiency is effectively improved.

The invention is not described in detail, but is well known to those skilled in the art.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a pneumatic bellows trip valve of intelligence, includes valve body (1), disk seat (2) and valve rod (10), its characterized in that: the valve comprises a valve body (1), a valve seat (2) is fixedly installed in the middle of the valve body (1), a valve clack (3) is fixedly installed above the valve seat (2), a valve rod (10) is vertically arranged on the valve clack (3), a valve clack cover (4) is installed at the joint of the valve rod (10) and the valve clack (3), a valve cover (6) is further installed above the valve body (1), a sealing gasket (5) is installed between the valve body (1) and the valve cover (6), a corrugated pipe assembly (7) is installed between the valve rod (10) and the valve cover (6), a filling bin is arranged above the corrugated pipe assembly (7), a filling layer (8) is arranged in the filling bin, a filling gland (9) is installed above the filling bin, and the filling gland (9) and the valve cover; the valve cover is characterized in that a supporting plate is installed on one side of the valve cover (6), an upright post (11) is vertically installed on the supporting plate, and the upright post (11) is fixedly connected with the supporting plate through a bolt.

2. An intelligent pneumatic bellows trip valve according to claim 1, characterized in that: and a guide connecting block (12) is also arranged between the upright post (11) and the valve rod (10).

3. An intelligent pneumatic bellows trip valve according to claim 1, characterized in that: the pneumatic control valve further comprises a pneumatic actuating mechanism (13), wherein the pneumatic actuating mechanism (13) is installed at the end parts of the upright post (11) and the valve rod (10), and the pneumatic actuating mechanism (13) controls the valve rod (10) to move up and down.

4. An intelligent pneumatic bellows trip valve according to claim 1, characterized in that: seal gasket (5) are including gasket body (14), gasket body (14) both sides are equipped with protruding edge (15), are arch structure (16) between two protruding edges (15), protruding edge (15) surface equipartition has a plurality of hemispheric protrudingly (17), gasket body (14) adopt the rubber material to make.

5. The use method of the intelligent pneumatic bellows cut-off valve in the claim 1 is realized, and is characterized in that: the using method comprises the following steps: