CN212643628U

CN212643628U - Double-valve-cover vacuum baffle valve

Info

Publication number: CN212643628U
Application number: CN202021221180.3U
Authority: CN
Inventors: 张青帅
Original assignee: Shanghai Changqiao Vacuum System Manufacturing Co ltd
Current assignee: Shanghai Changqiao Vacuum System Manufacturing Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-03-02
Anticipated expiration: 2030-06-28

Abstract

The utility model provides a double-valve-cover vacuum baffle valve belongs to high vacuum baffle valve field. The dual-bonnet vacuum flapper valve includes a valve body and a seal assembly. The lower end of the valve body is provided with a gas outlet, and the side wall of the valve body is provided with a gas inlet. The first valve cover covers the upper end face of the air outlet, the second valve cover is fixedly connected with the movable end of the driving piece, and the first valve cover is fixedly connected with the movable end of the driving piece through a telescopic rod; when the second valve cover is pulled, the air pressure to be overcome is small, and after the air pressures on the two sides of the first valve cover are balanced, the driving piece can pull the first valve cover, so that the air outlet can be opened only by adopting a low-power driving mechanism. The low-power driving mechanism is low in cost and smaller in size, so that the occupied space of the double-valve-cover vacuum baffle valve is reduced, the requirement of the double-valve-cover vacuum baffle valve on the installation position is reduced, and the double-valve-cover vacuum baffle valve is more convenient to install and use.

Description

Double-valve-cover vacuum baffle valve

Technical Field

The utility model relates to a high vacuum flapper valve field particularly, relates to a bivalve lid vacuum flapper valve.

Background

Currently, high vacuum flapper valves are used to turn on or off the flow of air in the vacuum line. Suitable media are pure air and non-corrosive gases. The high vacuum baffle valve can be divided into GD-J type rubber shaft seal and GD-J (b) type bellows shaft seal according to the shaft seal structure. According to the conduction form, GD-J is an angle conduction form, and GD-S is a three-way form with a pre-pumping opening;

the rough vacuum pipeline of most vacuum coating equipment is because of receiving the poor reason of both sides atmospheric pressure, then can produce high-speed air current in the moment of opening to cause the chamber wall rete to drop and attached to by on the plated work piece, the current air flow of coming to reduce earlier stage through the pilot valve, but when having increased equipment volume, also be convenient for install.

SUMMERY OF THE UTILITY MODEL

In order to remedy the above insufficiency, the utility model provides a double-valve-cover vacuum baffle valve, which aims to improve the problem that the high-vacuum baffle valve is opened and can generate high-speed airflow in the twinkling of an eye.

The utility model discloses a realize like this:

the utility model provides a pair of double-valve-cover vacuum baffle valve, including valve body and seal assembly.

The valve body upper end is fixed with the driving piece, the gas outlet has been seted up to the valve body lower extreme, the air inlet has been seted up to the valve body lateral wall.

The sealing assembly comprises a first valve cover and a second valve cover, the first valve cover covers the upper end face of the gas outlet, the second valve cover is connected with the inner wall of the valve body in a sliding mode, the side wall of the valve body is provided with a gas guide through hole, the second valve cover is connected with the port of the gas guide through hole in a sealing mode, the gas guide through hole is connected with the gas outlet through a communicating pipeline, the second valve cover is fixedly connected with the movable end of the driving piece, and the first valve cover is fixedly connected with the movable end of the driving piece through a telescopic rod.

The utility model discloses an in an embodiment, it has the valve rod to slide in the valve body and peg graft, the upper end of valve rod with driving piece expansion end fixed connection, the second valve bonnet lateral wall is fixed with the connecting plate, the one end of connecting plate with valve rod fixed connection, the telescopic link connect in the valve rod lower extreme.

The utility model discloses an in one embodiment, valve rod surface cover has the bellows, the one end of bellows with valve rod fixed surface is sealed, the other end of bellows with valve body inner wall sealing connection.

The utility model discloses an in an embodiment, the spacing groove has been seted up to the valve rod lower extreme, the one end of telescopic link slide peg graft in the spacing inslot, the slip joint has the stopper in the spacing inslot, the one end of telescopic link with stopper fixed connection.

The utility model discloses an in one embodiment, the spacing inslot is fixed with the elastic component, the one end of elastic component with stopper fixed connection, the bellows is corrugated metal pipe.

The utility model discloses an in one embodiment, air inlet port department is fixed with first flange, air outlet port department is fixed with the second flange, the driving piece is electric putter, the elastic component is the spring.

In an embodiment of the present invention, a sealing gasket is fixed on the lower surface of the first valve cover, the sealing gasket is connected to the edge of the upper end surface of the gas outlet in a sealing manner, and the sealing gasket is a nitrile rubber gasket.

The utility model discloses an in one embodiment, the air guide through hole terminal surface is provided with the sealing washer with one heart, the sealing washer is fixed valve body inner wall surface, the sealing washer is the fluororubber circle.

The utility model discloses an in the embodiment, the intercommunication pipeline includes first communicating pipe and second communicating pipe, first communicating pipe with the air guide through-hole is connected, the one end of second communicating pipe with the gas outlet intercommunication, first communicating pipe with second communicating pipe intercommunication.

The utility model discloses an in the embodiment, first communicating pipe with second communicating pipe lateral wall is connected, the one end threaded connection of second communicating pipe has the end cap.

The utility model has the advantages that: the utility model discloses a double-valve-cover vacuum flapper valve that above-mentioned design obtained, during the use, adopted the design of first valve gap and second valve gap double valve gap, when the pulling second valve gap, the atmospheric pressure that needs to overcome is less, and need not to consider the atmospheric pressure that first valve gap bore, and after the atmospheric pressure balance of first valve gap both sides, the driving piece just can stimulate first valve gap, so only need adopt the actuating mechanism of miniwatt can open the gas outlet. The low-power driving mechanism is low in cost and smaller in size, so that the occupied space of the double-valve-cover vacuum baffle valve is reduced, the requirement of the double-valve-cover vacuum baffle valve on the installation position is reduced, and the double-valve-cover vacuum baffle valve is more convenient to install and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a valve body provided in an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a valve body according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of an air guide through hole provided by the embodiment of the present invention;

fig. 4 is a schematic view of a telescopic rod structure provided by the embodiment of the present invention.

In the figure: 100-a valve body; 110-a drive member; 111-a telescopic rod; 130-an air inlet; 150-air outlet; 170-air guide through hole; 190-a valve stem; 191-a bellows; 193-limit groove; 195-a stop block; 197-an elastic member; 300-a seal assembly; 310-a first valve cover; 330-a second valve cover; 331-a connecting plate; 333-sealing ring; 350-a communicating pipe; 351-a first communication pipe; 353-a second communicating pipe; 355-plug.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the utility model provides a. Embodiments, all other embodiments obtained by a person skilled in the art without any inventive step are within the scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1 and 4, the present invention provides a technical solution: a dual cap vacuum flapper valve includes a valve body 100 and a seal assembly 300.

The sealing assembly 300 is disposed inside the valve body 100, and the opening and closing of the valve body 100 is controlled by the sealing assembly 300.

Referring to fig. 2-3, a driving member 110 is fixed at the upper end of the valve body 100, an air outlet 150 is formed at the lower end of the valve body 100, an air inlet 130 is formed in the side wall of the valve body 100, a valve rod 190 is inserted and inserted in the valve body 100 in a sliding manner, the upper end of the valve rod 190 is fixedly connected with the movable end of the driving member 110, a connecting plate 331 is fixed at the side wall of the second valve cover 330, one end of the connecting plate 331 is fixedly connected with the valve rod 190, and the telescopic rod 111 is connected to the;

it should be noted that, a corrugated tube 191 is sleeved on the surface of the valve rod 190, one end of the corrugated tube 191 is fixedly sealed with the surface of the valve rod 190, and the other end of the corrugated tube 191 is connected with the inner wall of the valve body 100 in a sealing manner.

In this embodiment, a limit groove 193 is formed at the lower end of the valve rod 190, one end of the telescopic rod 111 is inserted into the limit groove 193 in a sliding manner, a limit block 195 is connected to the limit groove 193 in a sliding manner in a clamping manner, one end of the telescopic rod 111 is fixedly connected with the limit block 195, an elastic member 197 is fixed in the limit groove 193, one end of the elastic member 197 is fixedly connected with the limit block 195, and the corrugated pipe 191 is a metal corrugated pipe.

It should be noted that a first flange is fixed to a port of the air inlet 130, a second flange is fixed to a port of the air outlet 150, the driving member 110 is an electric push rod, and the elastic member 197 is a spring.

Referring to fig. 1-4, the sealing assembly 300 includes a first valve cover 310 and a second valve cover 330, the first valve cover 310 covers the upper end surface of the air outlet 150, the second valve cover 330 is slidably connected to the inner wall of the valve body 100, wherein the inner wall of the valve body 100 is provided with a sliding slot, the second valve cover 330 is slidably clamped in the sliding slot, the side wall of the valve body 100 is provided with an air guide through hole 170, the second valve cover 330 is hermetically connected to an end of the air guide through hole 170, the air guide through hole 170 is connected to the air outlet 150 through a communicating pipe 350, the second valve cover 330 is fixedly connected to the movable end of the driving element 110, the first valve cover 310 is fixedly connected to the movable end of the driving element 110 through a telescopic rod 111, a sealing gasket is fixed to the lower surface of the first valve cover 310, the sealing gasket is hermetically connected to an edge of the upper, the end surface of the air guide through hole 170 is concentrically provided with a sealing ring 333, the sealing ring 333 is fixed on the inner wall surface of the valve body 100, and the sealing ring 333 is a fluororubber ring, so that the sealing property and the wear resistance are improved, and the second valve cover 330 is in sealing contact with the port of the air guide through hole 170.

In this embodiment, the communication pipe 350 includes a first communication pipe 351 and a second communication pipe 353, the first communication pipe 351 is connected to the air guide through hole 170, one end of the second communication pipe 353 is communicated with the air outlet 150, the first communication pipe 351 is communicated with the second communication pipe 353, the first communication pipe 351 is connected to a side wall of the second communication pipe 353, one end of the second communication pipe 353 is connected to a plug 355 in a threaded manner, and the plug 355 in the threaded manner is convenient to detach and can be used as an inspection opening.

The working principle of the double-valve-cover vacuum baffle valve is as follows: when the air outlet 150 is used, the first valve cover 310 covers the air outlet 150 to be in a closed state, meanwhile, the second valve cover 330 is attached to the surface of the port of the air guide through hole 170 to block the communication between the air inlet 130 and the air outlet 150, and the first valve cover 310 and the second valve cover 330 are pulled upwards through the driving part 110 to move upwards, wherein the first valve cover 310 is connected with the telescopic rod 111, due to the action of air pressure and the self weight of the first valve cover 310, the second valve cover 330 can move upwards firstly to separate the second valve cover 330 from the surface of the port of the air guide through hole 170, so that the air guide through hole 170 is opened, the air inlet 130 is communicated with the air outlet 150 through the communicating pipeline 350, and the high-air pressure area on the upper side of the first valve cover 310 inflates air to the low-pressure area in the air outlet 150, so that the pressure; the sliding opening and closing of the second valve cover 330 is slightly influenced by the internal pressure and is convenient to control, when the air pressure on the two sides of the first valve cover 310 tends to be balanced, the upper stretching shrinkage rod 111 continues to drive the first valve cover 310 to open the air outlet 150, the air outlet 150 is convenient to be completely opened, a large amount of high-speed air flow does not flow into or out of the valve body 100 through the air outlet 150 under the air pressure balanced state, due to the fact that the communicating pipeline 350 is additionally arranged, the air pressure on the two sides of the first valve cover 310 is balanced, the pressure caused by the air pressure difference is not overcome when the first valve cover 310 is pulled by; by adopting the design of the double valve covers of the first valve cover 310 and the second valve cover 330, when the second valve cover 330 is pulled, the air pressure to be overcome is smaller, the air pressure born by the first valve cover 310 does not need to be considered, and after the air pressures on the two sides of the first valve cover 310 are balanced, the driving part can pull the first valve cover 310, so that the air outlet 150 can be opened only by adopting a low-power driving mechanism. The low-power driving mechanism is low in cost and smaller in size, so that the occupied space of the double-valve-cover vacuum baffle valve is reduced, the requirement of the double-valve-cover vacuum baffle valve on the installation position is reduced, and the double-valve-cover vacuum baffle valve is more convenient to install and use.

It should be noted that the specific model specifications of the electric push rod and the valve body 100 need to be determined by model selection according to the actual specifications of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.

The power supply of the power putter and its principle will be clear to a person skilled in the art and will not be described in detail here.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-cover vacuum flapper valve is characterized by comprising

The valve comprises a valve body (100), wherein a driving piece (110) is fixed at the upper end of the valve body (100), an air outlet (150) is formed in the lower end of the valve body (100), and an air inlet (130) is formed in the side wall of the valve body (100);

sealing assembly (300), sealing assembly (300) includes first valve gap (310) and second valve gap (330), first valve gap (310) cover in gas outlet (150) up end, second valve gap (330) with valve body (100) inner wall sliding connection, air guide through-hole (170) have been seted up to valve body (100) lateral wall, second valve gap (330) with air guide through-hole (170) port sealing connection, air guide through-hole (170) with gas outlet (150) are connected through intercommunication pipeline (350), second valve gap (330) with driving piece (110) expansion end fixed connection, first valve gap (310) through telescopic link (111) with driving piece (110) activity end fixed connection.

2. The double-cover vacuum flapper valve as claimed in claim 1, wherein a valve stem (190) is slidably inserted into the valve body (100), an upper end of the valve stem (190) is fixedly connected with a movable end of the driving member (110), a connecting plate (331) is fixed to a side wall of the second valve cover (330), one end of the connecting plate (331) is fixedly connected with the valve stem (190), and the telescopic rod (111) is connected to a lower end of the valve stem (190).

3. The double-cover vacuum flapper valve as claimed in claim 2, wherein the valve stem (190) is covered with a bellows (191), one end of the bellows (191) is fixedly sealed with the surface of the valve stem (190), and the other end of the bellows (191) is connected with the inner wall of the valve body (100) in a sealing manner.

4. The double-valve-cover vacuum flapper valve of claim 3, wherein a limit groove (193) is formed at the lower end of the valve rod (190), one end of the telescopic rod (111) is inserted into the limit groove (193) in a sliding manner, a limit block (195) is clamped in the limit groove (193) in the sliding manner, and one end of the telescopic rod (111) is fixedly connected with the limit block (195).

5. The double-cover vacuum flapper valve as claimed in claim 4 wherein a resilient member (197) is fixed in the limit groove (193), one end of the resilient member (197) is fixedly connected to the limit block (195), and the bellows (191) is a metal bellows.

6. The double-deck vacuum flapper valve of claim 5 wherein a first flange is secured to a port of the inlet port (130), a second flange is secured to a port of the outlet port (150), the actuator (110) is a power-driven push rod, and the resilient member (197) is a spring.

7. The double-bonnet vacuum flapper valve as recited in claim 1, wherein a gasket is fixed to a lower surface of the first bonnet (310), the gasket is hermetically connected to an upper end edge of the air outlet (150), and the gasket is a nitrile rubber gasket.

8. The double-bonnet vacuum flapper valve as claimed in claim 1, wherein the end surface of the air guide through hole (170) is concentrically provided with a sealing ring (333), the sealing ring (333) is fixed on the inner wall surface of the valve body (100), and the sealing ring (333) is a fluoro-rubber ring.

9. A double-cap vacuum flapper valve as claimed in claim 1 wherein the communication pipe (350) includes a first communication pipe (351) and a second communication pipe (353), the first communication pipe (351) being connected with the air guide through hole (170), one end of the second communication pipe (353) being communicated with the air outlet (150), the first communication pipe (351) being communicated with the second communication pipe (353).

10. A double-cap vacuum flapper valve as claimed in claim 9 wherein the first communicating tube (351) is connected to a side wall of the second communicating tube (353), and a plug (355) is threadedly connected to one end of the second communicating tube (353).