CN210770573U

CN210770573U - Liquid medium switch valve

Info

Publication number: CN210770573U
Application number: CN201921954483.3U
Authority: CN
Inventors: 吴德伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-06-16
Anticipated expiration: 2029-11-13

Abstract

The utility model provides a liquid medium switch valve, includes pneumatic valve, case and top cap, and the case setting is equipped with the apical axis in the pneumatic valve between pneumatic valve and top cap, is connected with the thimble on the apical axis, is equipped with sealing device between thimble and the apical axis, is equipped with liquid medium entry and valve clack on the case, and the break-make of liquid medium in thimble and the valve clack cooperation control valve core is equipped with the liquid medium export on the top cap. The pneumatic valve has the advantages that liquid media are effectively prevented from entering the pneumatic valve in the circulation process, and the service life and the service frequency of the liquid medium switch valve are prolonged.

Description

Liquid medium switch valve

Technical Field

The utility model relates to a valve especially relates to a liquid medium ooff valve.

Background

At present, in the field of building devices, footwear and other industrial fields, glue spraying, water spraying or other liquid medium spraying is often used for adhering to the surface of a processed object. Aiming at different products, the spraying attachment area, the thickness of the attachment medium and the spraying frequency are all different, so that a liquid medium switch valve is required to control.

However, the liquid spraying frequency is high, so that the requirements on the service life, the fatigue test performance and the like of the liquid medium switch valve are extremely high, and the frequent damage of the liquid medium switch valve is avoided, so that the liquid medium switch valve needs to be replaced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the liquid medium switch valve is specially made, so that the service life is effectively prolonged, and the use frequency is increased.

In order to achieve the above object, the present invention provides the following solutions: the utility model provides a liquid medium switch valve, includes pneumatic valve, case and top cap, and the case setting is equipped with the apical axis in the pneumatic valve between pneumatic valve and top cap, is connected with the thimble on the apical axis, is equipped with sealing device between thimble and the apical axis, is equipped with liquid medium entry and valve clack on the case, and the break-make of liquid medium in thimble and the valve clack cooperation control valve core is equipped with the liquid medium export on the top cap.

Further, the sealing device comprises a sealing sheet, the lower end of the ejector pin is of a threaded column structure, a corresponding threaded hole is formed in the middle of the ejector shaft, a sealing sheet mounting through hole is formed in the middle of the sealing sheet, and the sealing sheet is sleeved on the threaded column through the sealing sheet mounting through hole.

Further, sealing device still includes the protection gasket, and protection gasket installation through-hole is equipped with in the middle part of the protection gasket, and the protection gasket passes through protection gasket installation through-hole cover to be established on the screw thread post, and the protection gasket is located the gasket below.

Furthermore, the middle part of the valve core is a medium channel which is communicated up and down, a first step is arranged below the medium channel, and a sealing rubber ring is arranged on the first step.

Furthermore, the middle part of the valve clack is a flow passage through hole matched with the thimble, a boss is arranged on the valve clack, a second step is arranged above the medium channel, the diameter of the boss is smaller than that of the flow passage through hole, and the diameter of the valve clack is smaller than that of the second step.

Furthermore, one side of the thimble close to the valve core is of a taper structure.

Furthermore, the material of the sealing sheet is polytetrafluoroethylene.

Furthermore, the material of the protection gasket is polytetrafluoroethylene.

Furthermore, a first air inlet for controlling the extension and contraction of the top shaft and a second air inlet for preventing the elastic failure of the top shaft are arranged on the pneumatic valve.

The utility model discloses an useful part lies in:

adopt the utility model provides a pair of liquid medium switch valve, the fore-set passes through threaded connection with the thimble, install protection gasket and gasket between fore-set and the thimble, the diameter of protection gasket is greater than the diameter of fore-set slightly, the gasket sets up the top at protection gasket, when the first air inlet of pneumatic valve admits air, then the fore-set contracts to the pneumatic valve in, drive protection gasket simultaneously, gasket and thimble move to the pneumatic valve direction, remove the certain distance after, gasket and pneumatic valve plane contact, and cover the clearance between fore-set and the pneumatic valve completely, thereby avoid in the liquid medium gets into the pneumatic valve, cause the damage to the pneumatic valve.

When the pneumatic valve is not ventilated, the ejector pin is pushed upwards to be matched with the flow channel through hole in the middle of the valve clack, the flow channel through hole is completely sealed by the ejector pin, the whole liquid medium switch valve is in a sealed state, after the pneumatic valve is ventilated, the ejector pin contracts downwards, the flow channel through hole is opened, liquid medium can flow in the flow channel through hole, the valve clack and the valve core are in clearance fit, and the valve clack can move relatively in the valve core, so that when the ejector pin is pushed upwards, the flow channel through hole can be self-positioned with the ejector pin, and the complete sealing of the flow channel through hole is ensured.

Drawings

Fig. 1 is a schematic structural diagram of the liquid medium switching valve of the present invention.

Fig. 2 is a schematic structural diagram of the pneumatic valve in the liquid medium switch valve of the present invention.

Fig. 3 is a schematic structural diagram of a valve clack and a valve core in the liquid medium switch valve of the present invention.

Fig. 4 is a schematic structural diagram of a valve clack and a valve core in the liquid medium switch valve of the present invention.

Reference numerals: the air-operated valve comprises an air-operated valve 1, a valve core 2, a top cover 3, a protective gasket 4, a sealing sheet 5, a sealing rubber ring 6, an ejector pin 7, a valve clack 8, an ejector column 9, a first step 10, a second step 11, a first air inlet 101, a second air inlet 102, a liquid medium inlet 201, a medium channel 202 and a flow passage through hole 801.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-4 of the 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.

The utility model provides a liquid medium switch valve, includes pneumatic valve, case and top cap, and the case setting is equipped with the apical axis in the pneumatic valve between pneumatic valve and top cap, is connected with the thimble on the apical axis, is equipped with sealing device between thimble and the apical axis, is equipped with liquid medium entry and valve clack on the case, and the break-make of liquid medium in thimble and the valve clack cooperation control valve core is equipped with the liquid medium export on the top cap.

The pneumatic valve, the valve core and the top cover are connected through a screw rod, a liquid medium flows through the interior of the valve core, and the on-off of the liquid medium is controlled through the control of the pneumatic valve.

The pneumatic valve mainly controls the telescopic state of a jack-prop in the pneumatic valve through the gas on-off of a first air inlet, a threaded hole is formed in the jack-prop, the jack-prop is connected with the jack-prop through the threaded hole, a protective gasket and a sealing sheet are further arranged between the jack-prop and the jack-prop, the protective gasket is arranged below the sealing sheet, and the jack-prop, the protective gasket and the sealing sheet also stretch up and down along with the jack-prop along with the stretching of the jack-prop. For clearance fit between fore-set and the pneumatic valve, there is the clearance, and the gasket mainly plays when the fore-set moves down, can play sealed effect with the complete closing cap in clearance, avoids in liquid medium gets into the pneumatic valve, damages the pneumatic valve. If the gasket reciprocates in-process and fore-set edge direct contact, then back in a long time, the gasket can damage, consequently, has still set up the protection gasket in the gasket below, can play the effect to the gasket protection.

The valve core is provided with a liquid medium inlet, the upper end and the lower end of the valve core are respectively provided with a first step and a second step, a sealing rubber ring made of nylon is placed in the first step, the sealing rubber ring can further compress the outline of the sealing sheet, the sealing effect is improved, a valve clack made of polytetrafluoroethylene is placed in the second step, the valve clack and the valve core are in clearance fit, the valve clack can move in the valve core in a small range, a flow passage through hole is formed in the middle of the valve clack, liquid medium enters from the liquid medium inlet and firstly enters a medium passage in the valve core, the medium passage penetrates through the upper end and the lower end of the valve core, and then the opening and. Because the valve clack and the valve core are in clearance fit, when the thimble moves upwards, the flow passage through hole on the valve clack can be self-positioned with the thimble, and the situation of untight closing is avoided.

The top cover is provided with a liquid medium outlet, and after the flow passage through hole of the valve clack is separated from the thimble, the liquid medium enters the top cover through the valve core and flows out through the liquid medium outlet.

Pneumatic valve 1 is last to be equipped with first air inlet 101 and second air inlet 102, and first air inlet 101 mainly used controls the fore-set and rises or descend, and second air inlet 102 is as reserve air inlet, because under normal conditions, the fore-set passes through spring pressure and rises, does not avoid long-term the back of using, and spring pressure is invalid, and then accessible second air inlet 102 is intake, will push the fore-set and promote to rise.

It is obvious to a person skilled in the art that the invention is not limited to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention, and that the embodiments are therefore to be considered in all respects as exemplary 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.

Claims

1. The utility model provides a liquid medium switch valve, its characterized in that, includes pneumatic valve, case and top cap, and the case setting is equipped with the apical axis in the pneumatic valve between pneumatic valve and top cap, is connected with the thimble on the apical axis, is equipped with sealing device between thimble and the apical axis, is equipped with liquid medium entry and valve clack on the case, and the break-make of liquid medium in thimble and the valve clack cooperation control valve core is equipped with the liquid medium export on the top cap.

2. The liquid medium switching valve according to claim 1, wherein the sealing means comprises a sealing piece, the lower end of the thimble is of a threaded column structure, a corresponding threaded hole is formed in the middle of the thimble, a sealing piece mounting through hole is formed in the middle of the sealing piece, and the sealing piece is sleeved on the threaded column through the sealing piece mounting through hole.

3. The liquid medium switching valve according to claim 2, wherein the sealing device further comprises a protective gasket, a protective gasket mounting through hole is formed in the middle of the protective gasket, the protective gasket is sleeved on the threaded column through the protective gasket mounting through hole, and the protective gasket is located below the sealing sheet.

4. The liquid medium switch valve according to claim 3, wherein the middle of the valve core is a medium passage which is through from top to bottom, a first step is arranged below the medium passage, and a sealing rubber ring is arranged on the first step.

5. A liquid medium switching valve according to claim 4, wherein the valve flap has a flow passage through hole at a central portion thereof for engagement with the thimble, a boss is provided on the valve flap, a second step is provided above the medium passage, the boss has a diameter smaller than that of the flow passage through hole, and the valve flap has a diameter smaller than that of the second step.

6. The liquid medium switching valve according to claim 5, wherein a side of the needle adjacent to the spool is tapered.

7. A liquid medium switching valve according to claim 2, wherein the sealing plate is made of teflon.

8. A liquid medium switching valve according to claim 3, wherein the protective gasket is made of teflon.

9. A liquid medium switching valve according to any one of claims 1 to 8, wherein the pneumatic valve is provided with a first air inlet port for controlling extension and contraction of the head shaft and a second air inlet port for preventing elastic failure of the head shaft.