CN214838479U

CN214838479U - Vacuum valve

Info

Publication number: CN214838479U
Application number: CN202120262983.1U
Authority: CN
Inventors: 张娟娟
Original assignee: Baotou Fuhua Oxygen Co ltd
Current assignee: Baotou Fuhua Oxygen Co ltd
Priority date: 2021-01-30
Filing date: 2021-01-30
Publication date: 2021-11-23
Anticipated expiration: 2031-01-30

Abstract

The utility model discloses a vacuum valve, including valve body and fixed cover, the inside lower extreme fixedly connected with supporting shoe of valve body, and the right side of supporting shoe is provided with the export, the lower extreme swing joint of valve body has flange, and flange's lower extreme fixedly connected with contact tube, the inside upper end of case is provided with the case, and the outer wall fixedly connected with of case fills up sealedly, the upper end fixedly connected with connecting block of case, and the upper end fixedly connected with bolster of connecting block, the upper end fixedly connected with valve rod of bolster, and the lower extreme left and right sides of valve rod is provided with the locating piece. This vacuum valve compares with ordinary vacuum valve, and the case setting is circular-arc for the medium can play the effect of buffering at the in-process of conduction, and secondly outside sealed pad has increased the inside leakproofness of valve body, thereby improves the effect of vacuum conduction medium, and the many flange structures of setting are convenient for install and are connected this valve body.

Description

Vacuum valve

Technical Field

The utility model relates to a vacuum valve technical field specifically is a vacuum valve.

Background

The valve is produced along with the production of the fluid pipeline, the valve used by human has been used for about 4000 years, when salt is prepared by absorbing brine from a salt well in ancient China, a wooden plug valve has been used in bamboo pipes, and similar wooden plugs have been used to control the distribution of water flow when ancient egyptian built large-scale water conservancy projects to prevent nile river flooding in 1800 c, these are valve prototypes, and a large number of industrial valves have been used since the steam engine of watt's invention, and valves made of various materials such as cast iron, cast steel, forged steel, stainless steel, chrome molybdenum steel, brass, etc. have appeared in the early twentieth century, and in fluid systems, the vacuum valve is a valve whose working pressure is lower than the standard atmospheric pressure.

The existing vacuum valve is inconvenient to install and detach and maintain in the using process, is generally in an integrated structure, is not provided with a buffer structure in the using process, is easy to suffer from the damage of the inside of the valve body due to the collision of media under the condition that the pressure of an inner cavity is increased, shortens the service life of the valve body, has limited internal sealing effect and limited conduction efficiency, can not well meet the use requirements of people, and carries out technical innovation on the basis of the existing vacuum valve according to the condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vacuum valve to propose current vacuum valve in solving above-mentioned background art, be not convenient for install and dismantle the maintenance at the in-process that uses, generally show formula structure as an organic whole, secondly the in-process that uses is not provided with buffer structure, thereby easily receive the collision of medium and cause the inside damage of valve body under the condition that inner chamber pressure increases, the life of reducing the valve body, and the inside seal effect is limited, conduction efficiency is limited, can not be fine satisfy people's user demand problem.

In order to achieve the above object, the utility model provides a following technical scheme: a vacuum valve comprises a valve body and a fixed sleeve, wherein a supporting block is fixedly connected to the lower end of the interior of the valve body, a guide outlet is formed in the right side of the supporting block, a connecting flange is movably connected to the lower end of the valve body, a guide outlet pipe is fixedly connected to the lower end of the connecting flange, a valve core is arranged at the upper end of the interior of the valve body, a sealing gasket is fixedly connected to the outer wall of the valve core, a connecting block is fixedly connected to the upper end of the valve core, a buffer member is fixedly connected to the upper end of the buffer member, positioning blocks are arranged on the left side and the right side of the lower end of the valve rod, a limiting block is movably connected to the upper end of the valve body, an installation block is arranged above the limiting block, a hand wheel is vertically arranged above the fixed sleeve, the fixed sleeve is located at the upper end of the installation block, a left guide pipe is fixedly connected to the left end of the valve body, and a pipeline connecting block is fixedly connected to the left side of the left guide pipe, the right end of the valve body is fixedly connected with a right guide pipe.

Preferably, the support blocks are symmetrical with respect to a central axis of the valve body, and the central axis of the outlet port coincides with the central axis of the valve body.

Preferably, the upper surface of the delivery pipe is tightly attached to the upper surface of the connecting flange, and the central axis of the connecting flange coincides with the central axis of the delivery pipe.

Preferably, the inner surface of the sealing gasket is tightly attached to the outer surface of the valve core, and the central axis of the valve core coincides with the central axis of the valve rod.

Preferably, the valve rod passes through to constitute elastic construction between bolster and the connecting block, and closely laminates between the lower surface of connecting block and the upper surface of case.

Preferably, the valve rod penetrates through the inner part of the fixing sleeve, and the upper surface of the valve rod is tightly attached to the lower surface of the hand wheel.

Preferably, the right guide pipe and the left guide pipe are symmetrical about a central axis of the delivery pipe, and the central axis of the right guide pipe and the central axis of the pipeline connecting block coincide with each other.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a valve body, the supporting shoe, the export, the setting of derivation pipe box case, make in the in-process of using the valve body be connected with outside vacuum pump, make the air compression in the pump chamber discharge outside the pump again, make the pump chamber in produce the negative pressure, auxiliary medium conduction, when the installation utilize flange and valve body installation fixed with the delivery tube, all be provided with check valve between delivery tube and the right pipe, thereby guarantee can not appear palirrhea condition in the constitution of circulation, according to the demand of using and satisfy the multi-pipe connection, thereby improve the efficiency of medium conduction;

2. the utility model discloses a case, sealed the pad, the connecting block, the bolster, the setting of valve rod and installation piece, make rotate the top hand wheel in operation process, the hand wheel drives the valve rod and rotates in fixed cover inside and realize the upper and lower control to the case, left side pipe also is provided with check valve, the case is laminated with the supporting shoe completely when inside is vacuum state, and increased inside gas tightness under the supplementary effect of sealed pad, the case moves upwards under the circumstances that the case was rotated to the external force, in-process and air inlet contact of removal, the internal pressure reduces after the outside air got into, when pressure reaches the state equal with external atmospheric pressure, sensor auxiliary vacuum pump sucks the air once more, realize that the case descends and forms the separation, thereby realize the state of air suction, realize quick medium conduction;

3. the utility model discloses a stopper, the locating piece, fixed cover, the hand wheel, flange, left pipe, the setting of pipe connection piece and right pipe, make stopper and locating piece play supplementary spacing function at the in-process of valve rod activity, guarantee the effectual drive case activity of valve rod, guarantee the inside higher gas tightness of during operation valve body, thereby guarantee the effect of efficient vacuum suction, the pipe connection piece can be with left pipe, right pipe and valve body bolt fastening with in proper order, detachable construction convenient to use person between them carries out quick installation and dismantlement.

Drawings

Fig. 1 is a schematic view of a front perspective structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic view of the external structure of the present invention;

fig. 4 is a schematic top view of the present invention.

In the figure: 1. a valve body; 2. a support block; 3. a lead-out port; 4. a delivery pipe; 5. a valve core; 6. a gasket; 7. connecting blocks; 8. a buffer member; 9. a valve stem; 10. mounting blocks; 11. a limiting block; 12. positioning blocks; 13. fixing a sleeve; 14. a hand wheel; 15. a connecting flange; 16. a left catheter; 17. a pipeline connecting block; 18. and a right duct.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a vacuum valve comprises a valve body 1 and a fixed sleeve 13, wherein the lower end inside the valve body 1 is fixedly connected with a supporting block 2, the right side of the supporting block 2 is provided with a guide outlet 3, the lower end of the valve body 1 is movably connected with a connecting flange 15, the lower end of the connecting flange 15 is fixedly connected with a guide outlet pipe 4, the upper end inside the valve body 1 is provided with a valve core 5, the outer wall of the valve core 5 is fixedly connected with a sealing gasket 6, the upper end of the valve core 5 is fixedly connected with a connecting block 7, the upper end of the connecting block 7 is fixedly connected with a buffer member 8, the upper end of the buffer member 8 is fixedly connected with a valve rod 9, the left side and the right side of the lower end of the valve rod 9 are provided with positioning blocks 12, the upper end of the valve body 1 is movably connected with a limiting block 11, an installation block 10 is arranged above the limiting block 11, a hand wheel 14 is vertically arranged above the fixed sleeve 13, the fixed sleeve 13 is positioned at the upper end of the installation block 10, and the left end of the valve body 1 is fixedly connected with a left guide pipe 16, and the left side of the left conduit 16 is fixedly connected with a pipeline connecting block 17, and the right end of the valve body 1 is fixedly connected with a right conduit 18.

The utility model discloses in: the supporting blocks 2 are symmetrical about the central axis of the valve body 1, and the central axis of the lead-out port 3 is coincident with the central axis of the valve body 1; in the using process, the valve body 1 is connected with an external vacuum pump, so that air in the pump cavity is compressed and then discharged out of the pump, negative pressure is generated in the pump cavity, and the auxiliary medium is conducted.

The utility model discloses in: the upper surface of the delivery pipe 4 is tightly attached to the upper surface of the connecting flange 15, and the central axis of the connecting flange 15 is coincided with the central axis of the delivery pipe 4; when installation, the delivery pipe 4 is fixedly installed with the valve body 1 by utilizing the connecting flange 15, and a one-way valve is arranged between the delivery pipe 4 and the right guide pipe 18, so that the backflow condition can not occur in the circulating structure, the multi-pipeline connection is met according to the use requirement, and the medium conduction efficiency is improved.

The utility model discloses in: the inner surface of the sealing gasket 6 is tightly attached to the outer surface of the valve core 5, and the central axis of the valve core 5 is superposed with the central axis of the valve rod 9; the upper hand wheel 14 is rotated in the operation process, the hand wheel 14 drives the valve rod 9 to rotate in the fixed sleeve 13 to realize the up-and-down control of the valve core 5, the left guide pipe 16 is also provided with a one-way valve, the valve core 5 is completely attached to the supporting block 2 when the inside is in a vacuum state, and the air tightness of the inside is increased under the auxiliary action of the sealing gasket 6.

The utility model discloses in: the valve rod 9 forms an elastic structure with the connecting block 7 through the buffer piece 8, and the lower surface of the connecting block 7 is tightly attached to the upper surface of the valve core 5; the case 5 moves upwards under the condition that case 5 is rotated to external force, and the in-process of removal contacts with the air inlet, and the internal pressure reduces after the outside air gets into, and when pressure reached the state equal with external atmospheric pressure, the sensor assisted vacuum pump again suction air, realizes that case 5 descends and forms the separation to realize the state of air suction, realize quick medium conduction.

The utility model discloses in: the valve rod 9 penetrates through the inner part of the fixed sleeve 13, and the upper surface of the valve rod 9 is tightly attached to the lower surface of the hand wheel 14; the limiting block 11 and the positioning block 12 play a role in auxiliary limiting in the moving process of the valve rod 9, and ensure that the valve rod 9 effectively drives the valve core 5 to move.

The utility model discloses in: the right conduit 18 and the left conduit 16 are symmetrical about the central axis of the delivery pipe 4, and the central axis of the right conduit 18 coincides with the central axis of the pipeline connecting block 17; guarantee the inside higher gas tightness of during operation valve body 1 to guarantee the effect of efficient vacuum suction, pipe connection block 17 can carry out quick installation and dismantlement with left pipe 16, right pipe 18 and valve body 1 with the bolt fastening in proper order, detachable construction convenient to use person between them.

The working principle of the vacuum valve is as follows: firstly, connecting the valve body 1 with an external vacuum pump to compress air in a pump cavity and discharge the air out of the pump, so that negative pressure is generated in the pump cavity and auxiliary media are conducted;

secondly, the delivery pipe 4 is fixedly installed with the valve body 1 by using the connecting flange 15 during installation, and one-way valves are arranged between the delivery pipe 4 and the right guide pipe 18, so that the backflow condition can not occur in the circulation composition; secondly, the upper hand wheel 14 is rotated in the operation process, the hand wheel 14 drives the valve rod 9 to rotate in the fixed sleeve 13 to realize the up-and-down control of the valve core 5, the left guide pipe 16 is also provided with a one-way valve, the valve core 5 is completely attached to the supporting block 2 when the interior is in a vacuum state, and the air tightness of the interior is increased under the auxiliary action of the sealing gasket 6; then the valve core 5 moves upwards under the condition that the valve core 5 is rotated by external force, the valve core 5 is contacted with the air inlet in the moving process, the internal pressure is reduced after external air enters, when the pressure reaches the state equal to the external air pressure, the sensor assists the vacuum pump to suck air again, the valve core 5 descends to form obstruction, and the air sucking state is realized;

finally, the left guide pipe 16, the right guide pipe 18 and the valve body 1 can be sequentially fixed by bolts through the pipeline connecting block 17, and the limiting block 11 and the positioning block 12 play a role in auxiliary limiting in the moving process of the valve rod 9, so that the valve rod 9 can effectively drive the valve core 5 to move, and high air tightness inside the valve body 1 during working can be guaranteed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum valve, includes valve body (1) and fixed cover (13), its characterized in that: the lower end of the interior of the valve body (1) is fixedly connected with a supporting block (2), the right side of the supporting block (2) is provided with a guide outlet (3), the lower end of the valve body (1) is movably connected with a connecting flange (15), the lower end of the connecting flange (15) is fixedly connected with a guide outlet pipe (4), the upper end of the interior of the valve body (1) is provided with a valve core (5), the outer wall of the valve core (5) is fixedly connected with a sealing gasket (6), the upper end of the valve core (5) is fixedly connected with a connecting block (7), the upper end of the connecting block (7) is fixedly connected with a buffer piece (8), the upper end of the buffer piece (8) is fixedly connected with a valve rod (9), the left side and the right side of the lower end of the valve rod (9) are provided with positioning blocks (12), the upper end of the valve body (1) is movably connected with a limiting block (11), and an installation block (10) is arranged above the limiting block (11), the hand wheel (14) have been installed perpendicularly to the top of fixed cover (13), and fixed cover (13) are located the upper end of installation piece (10), the left end fixedly connected with left pipe (16) of valve body (1), and the left side fixedly connected with pipe connection piece (17) of left pipe (16), the right-hand member fixedly connected with right pipe (18) of valve body (1).

2. A vacuum valve according to claim 1, wherein: the supporting blocks (2) are symmetrical about the central axis of the valve body (1), and the central axis of the outlet (3) is coincident with the central axis of the valve body (1).

3. A vacuum valve according to claim 1, wherein: the upper surface of the delivery pipe (4) is tightly attached to the upper surface of the connecting flange (15), and the central axis of the connecting flange (15) coincides with the central axis of the delivery pipe (4).

4. A vacuum valve according to claim 1, wherein: the inner surface of the sealing gasket (6) is tightly attached to the outer surface of the valve core (5), and the central axis of the valve core (5) is coincided with the central axis of the valve rod (9).

5. A vacuum valve according to claim 1, wherein: the valve rod (9) forms an elastic structure with the connecting block (7) through the buffer piece (8), and the lower surface of the connecting block (7) is tightly attached to the upper surface of the valve core (5).

6. A vacuum valve according to claim 1, wherein: the valve rod (9) penetrates through the inner part of the fixing sleeve (13), and the upper surface of the valve rod (9) is tightly attached to the lower surface of the hand wheel (14).

7. A vacuum valve according to claim 1, wherein: the right guide pipe (18) and the left guide pipe (16) are symmetrical about the central axis of the delivery pipe (4), and the central axis of the right guide pipe (18) and the central axis of the pipeline connecting block (17) are coincided with each other.