CN201326811Y - Automatic valve opening and closing device - Google Patents

Abstract

The utility model relates to an automatic valve opening and closing device, which comprises a valve, a sealing surface and a valve motion component, wherein the valve motion component comprises a horizontal connecting rod component and a vertical motion component; the horizontal connecting rod assembly can control the valve to horizontally reciprocate between a rotary opening position and a vertical opening position over the flange opening; the vertical motion assembly may control the valve to reciprocate vertically along its axis between a vertically open position and a closed position. The utility model discloses an automatic valve opening and closing device has that control is convenient, the switch is swift, open no friction, difficult wearing and tearing and can adjust the advantage well automatically, only needs to exert a power on the cylinder just can realize the efficiency that the valve opened or closed, and its application scope is extensive, is particularly useful for among the vacuum valve headstock gear of major diameter.

Description

Automatic opening and closing valve device

technical field

The utility model relates to an automatic opening and closing valve device, in particular to an automatic opening and closing valve device used in the vacuum field.

Background technique

In the modern industrial production process, in many cases, devices such as containers or pipelines need to be sealed, and vacuum equipment is currently the most widely used equipment in the field of industry and scientific research that needs to be sealed. The vacuum equipment is mainly composed of a vacuum chamber and a vacuum device. The vacuum chamber includes a vacuum container, a valve and a pipeline connected with a vacuum device. In the state of vacuum use, the gas pressure inside the vacuum chamber is much lower than the outside gas pressure, and the vacuum chamber is connected to the outside atmosphere through a valve. When evacuating the vacuum chamber, the valve should be closed first, and the vacuum chamber should be evacuated through the vacuum device; when the vacuum chamber needs to return to normal pressure, inflate the interior of the vacuum chamber, and then open the valve.

It can be seen from the above that if the sealing performance of the valve is low, during the process of vacuuming the vacuum chamber, gas will continuously enter the vacuum chamber from the outside, which will not only affect the efficiency of vacuuming, but also cannot ensure that the vacuum chamber is in use. There is sufficient vacuum. It can be seen that the sealing performance of the valve directly affects the vacuum degree of the vacuum chamber. In modern industrial production, the requirements for the vacuum degree of the vacuum chamber are getting higher and higher, which requires not only high-performance vacuuming equipment, but also a well-sealed valve device.

At present, most of the sealing valves commonly used in the vacuum field use disc valves or gate valves. The butterfly valve is convenient and quick to open and close, and can be operated frequently. Under low pressure, it can achieve good sealing. However, its operating pressure and operating temperature range are small, and the seal of the disc valve is easy to wear, and the seal at the rotating shaft is not tight. When automatic control is adopted, the valve will drift due to the uneven force on the seal, which will affect the sealing effect. Gate valves are large in size and complex in structure, and require high precision in parts manufacturing.

Utility model content

The technical problem to be solved by the utility model is to provide an automatic opening and closing valve device which is convenient and quick to open and close, has a simple structure, no friction when opening, the seal is not easy to wear, and can realize the function of automatic alignment.

In order to achieve the purpose of the above invention, the automatic opening and closing valve device of the present utility model includes: a valve body, a sealing surface and a valve movement mechanism, wherein the valve body can move vertically at a closed position and an open position directly above the flange mouth , and horizontal rotation between the open position above the flange opening and the open position fully opening the flange opening.

The valve motion mechanism includes a horizontal connecting rod assembly used to control the valve body to perform horizontal reciprocating rotation between the opening position of the fully opened flange mouth and the opening position above the flange mouth, and a horizontal connecting rod assembly used to control the valve body above the flange mouth. A vertical movement component for vertical reciprocating movement between the open position and the closed position, and a reversing component for realizing the valve body from horizontal rotation to vertical movement.

According to a preferred embodiment of the present utility model, the horizontal link assembly includes: a cylinder, one end of which is pivotally arranged on the fixed wall, and a rocker arm, a connecting rod, a cam plate, a swivel seat and a beam that are pivotally connected to each other; wherein , the other end of the cylinder is pivotally connected to the rocker arm; one end of the rocker arm is pivotally arranged on the fixed wall, and the other end is pivotally connected to one end of the connecting rod; the other end of the connecting rod is pivotally arranged on a cam plate; One end of the cam plate is pivotally arranged on the swivel seat, and the swivel seat is fixedly installed beside the flange mouth, and a beam is also pivotally arranged on the swivel seat.

According to yet another preferred embodiment of the present utility model, the reversing assembly includes a wedge, an elastic connector connected to the wedge, and a stopper, and the stopper is used to limit the horizontal movement of the beam.

According to yet another preferred embodiment of the present utility model, the vertical motion assembly includes a central column and a valve body, and the lower end of the central column is connected to the valve.

According to another preferred embodiment of the present utility model, the hinged position of the rocker arm and the cylinder is located on the side of the rocker arm close to its fixed end.

According to another preferred embodiment of the present invention, the beam is provided with a mounting groove, the wedge is mounted in the mounting groove, and the elastic connector is mounted in the mounting groove.

According to another preferred embodiment of the present utility model, a hole is opened on the beam at a position facing the central column, and the central column passes through the hole.

The automatic opening and closing valve device of the utility model has the advantages of convenient control, fast switching, no friction in opening, not easy to wear and can be automatically aligned, and the valve can be opened or closed only by applying a power to the cylinder. Wide range, especially suitable for large diameter vacuum valve opening and closing equipment.

Description of drawings

Fig. 1 is a schematic diagram of an embodiment of the automatic opening and closing valve device according to the present invention.

Detailed ways

Embodiments of the utility model will be further described below in conjunction with the accompanying drawings.

Fig. 1 shows an automatic opening and closing valve device, which includes a valve body 9, a sealing surface and a valve movement mechanism. The valve body 9 can move vertically between a closed position 13 and an open position 14 directly above the flange opening 12; horizontal rotation can be realized between the position 14 and the opening position 15 which fully opens the flange opening;

The valve movement mechanism includes a horizontal link assembly for controlling the horizontal reciprocating rotation of the valve body 9 between positions 14 and 15, and a vertical movement assembly for controlling the vertical reciprocating movement of the valve body 9 between positions 13 and 14. , and a reversing assembly for realizing the valve body 9 from horizontal rotation to vertical movement.

The horizontal link assembly includes: a cylinder 1, one end of which is pivotally arranged on a fixed wall, and a rocker arm 2, a connecting rod 4, a cam plate 5, a swivel seat 3 and a beam 10 which are pivotally connected to each other; wherein, the cylinder 1 The other end is pivotally connected to the rocker arm 2, and its pivot axis is located on the side of the rocker arm 2 close to the fixed end; one end of the rocker arm 2 is pivotally arranged on the fixed wall, and the other end is pivotally connected to one end of the connecting rod 4 The other end of the connecting rod 4 is pivoted on a cam plate 5; one end of the cam plate 5 is pivoted on the swivel seat 3, and the swivel seat 3 is fixedly installed beside the flange mouth 12, and a crossbeam is also pivotally arranged on the swivel seat 3 10. The cam plate 5 and one end of the crossbeam 10 located on the swivel seat 3 are arranged coaxially;

The reversing assembly includes a wedge 6 , a spring 8 connected to the wedge 6 , and a stopper 11 for limiting the horizontal movement of the crossbeam 10 ; the stopper 11 is arranged near the free end of the crossbeam 10 .

The vertical movement assembly includes a central column 7 and a valve body 9 , and the lower end of the central column 7 is connected to the valve body 9 .

The pivoting device connecting the cylinder 1 of the rocker arm 2 is located on the side of the rocker arm 2 close to its fixed end.

The beam 10 is provided with an installation groove, the wedge 6 is installed in the installation groove, and the spring 8 is also installed in the installation groove.

A hole is formed at the position facing the center column 7 on the beam 10, and the center column 7 passes through the hole.

When the cylinder 1 pulls the rocker arm 2 to swing counterclockwise, the connecting rod 4 pushes the beam 10 to rotate clockwise around the swivel seat 3 through the crescent groove on the cam plate 5, and drives the valve body 9 to rotate together. When the beam 10 rotates to the limit stop At block 11, the crossbeam 10 and the valve body 9 stop rotating. At this time, they are in the middle of the flange mouth 12, and the cylinder 1 continues to move to make the connecting rod 4 push the cam plate 5 to rotate, forcing the tail end of the wedge 6 to break away from the cam plate 5. The crescent groove slides along the axial direction, thereby pushing the central column 7 to move downward and pressing down the valve body 9 until the valve body 9 is completely closed, and the cylinder 1 stops moving. When the cylinder 1 pushes the rocker arm 2 to swing clockwise, the connecting rod 4 pulls the cam plate 5 to rotate counterclockwise, the tail of the wedge 6 returns to the crescent groove of the cam plate 5 under the action of the spring 8, and the center column 7 moves upward synchronously , the valve body 9 is released, and the cylinder 1 continues to move to pull the crossbeam 10 to rotate counterclockwise around the revolving seat 3, and drives the valve body 9 to rotate together until the valve body 9 is fully opened, and the cylinder 1 stops moving.

The above disclosures are only preferred embodiments of the present utility model, and certainly cannot be used to limit the protection scope of the present utility model. It can be understood that equivalent changes made according to the essence and scope defined in the appended claims of the present invention still belong to the scope covered by the present invention.

Claims (8)

1. A valve device for automatic opening and closing, comprising a valve body (9), a sealing surface and a valve movement mechanism, wherein, The valve body (9) can move vertically in a closed position (13) and an open position (14) facing directly above the flange mouth (12); (15) Realize horizontal rotation between; The valve movement mechanism includes a horizontal connecting rod assembly used to control the valve body (9) to perform horizontal reciprocating rotation between the position (14) and the position (15), and is used to control the valve body (9) between the position (13) and the position (15). A vertical movement assembly for vertical reciprocating movement between positions (14), and a reversing assembly for realizing the valve body (9) from horizontal rotation to vertical movement. 2. The valve device of automatic opening and closing according to claim 1, characterized in that, The horizontal link assembly includes: a cylinder (1), one end of which is pivotally arranged on a fixed wall, and a rocker arm (2), a connecting rod (4), and a cam plate that are pivotally connected to each other (5), slewing seat (3) and beam (10); wherein, the other end of the cylinder (1) is pivotally connected to the rocker arm (2); one end of the rocker arm (2) is pivotally arranged on a fixed On the wall, the other end is pivotally connected to one end of the connecting rod (4); the other end of the connecting rod (4) is pivotally arranged on a cam plate (5); one end of the cam plate (5) is pivotally It is arranged on the swivel base (3), and the swivel base (3) is fixedly installed beside the flange opening (12), and a beam (10) is also pivotally arranged on the swivel base (3). 3. The valve device of automatic opening and closing according to claim 1 or 2, characterized in that, The reversing assembly includes a wedge (6), an elastic connector (8) connected to the wedge (6) and a stopper (11), and the stopper (11) is used to limit the beam (10) horizontal movement. 4. The automatic opening and closing valve device according to claim 1 or 2, characterized in that, the vertical movement assembly comprises a central column (7) and a valve body (9), and the lower end of the central column (7) is connected to The valve (9). 5. The automatic opening and closing valve device according to claim 2, characterized in that, the hinged position of the rocker arm (2) and the cylinder (1) is located on the rocker arm (2) near its fixed end. side. 6. The automatic opening and closing valve device according to claim 3, characterized in that, The beam (10) is provided with a mounting groove, and the wedge (6) is mounted in the mounting groove. 7. The automatic opening and closing valve device according to claim 3, characterized in that, the elastic connecting piece (8) is installed in the installation groove. 8. The automatic opening and closing valve device according to claim 4, characterized in that, a hole is opened at a position facing the center column (7) on the beam (10), and the center column (7) is opened from the position of the center column (7). through the hole.

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