CN213236120U

CN213236120U - Non-rising stem gate valve

Info

Publication number: CN213236120U
Application number: CN202021535203.8U
Authority: CN
Inventors: 裴凡; 杨林鹏; 王学军
Original assignee: Zhengzhou Zhongli Pump & Valve Manufacturing Co ltd
Current assignee: Zhengzhou Zhongli Pump & Valve Manufacturing Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-05-18
Anticipated expiration: 2030-07-29

Abstract

The utility model provides a non-rising stem gate valve, including valve body and valve gap, the valve body includes that fluid passage and fluid passage are equipped with the flashboard groove in, leave the flashboard chamber between valve gap and the valve body and state to rotate on the valve gap and install the bull stick, be fixed with the rotation handle on the bull stick, be fixed with a screw thread section of thick bamboo on the bull stick, be equipped with the flashboard in the valve body, be equipped with the flashboard hole on the valve body, the flashboard is fixed with the threaded rod, it has the slider to be equipped with slide and slide sliding fit in the fluid passage, the flashboard is kept away from one of threaded rod and is served to be fixed with protruding and. The vibrations that can reduce the flashboard and produce to reduce the damage degree of valve, improve the life of valve, reduce the damage that the remaining fluid of flashboard intracavity led to the fact the sealing member, further improvement valve's life.

Description

Non-rising stem gate valve

Technical Field

The utility model relates to a pipeline valve equipment technical field especially relates to a non-rising stem gate valve.

Background

The non-rising stem gate valve has opening and closing part of gate plate with motion direction perpendicular to the fluid direction for regulation and throttling. The non-rising stem gate valve is also called a rotating stem gate valve (also called a non-rising stem wedge gate valve). The valve rod nut is arranged on the gate plate, the hand wheel rotates to drive the valve rod to rotate, so that the gate plate is lifted, generally, trapezoidal threads are arranged at the bottom end of the valve rod, and rotary motion is changed into linear motion through the threads at the bottom end of the valve and the guide grooves in the valve clack, namely, operation torque is changed into operation thrust. Direct contact between flashboard and the fluid when using, when the pressure of fluid is great, thrust to the flashboard is just big, opens the flashboard this moment, can make the flashboard produce vibrations to the valve rod with flashboard fixed connection, cause the harm to the leakproofness of whole valve, thereby reduced the life of valve. And the valve is when using, all is equipped with the cavity between valve gap and the valve body to the lift of valve clack, but after the valve was closed, the inside circulation of cavity can't be derived, probably causes the corruption to the leakproofness between valve rod and the valve gap after long-time, thereby reduces the life of valve.

SUMMERY OF THE UTILITY MODEL

To the circumstances, for overcoming prior art's defect, the utility model aims at providing a dark pole gate valve, can reduce the valve plate and produce the condition of vibrations when opening, improve the life of valve to close the inside fluid of back cavity to the valve plate and derive, reduce the harm to the valve.

The non-rising stem gate valve comprises a valve body and a valve cover, wherein the valve body comprises a fluid passage and a gate plate groove arranged in the fluid passage, the valve cover is connected with the valve body through a flange, a gate plate cavity is reserved between the valve cover and the valve body, a rotating rod is rotatably arranged on the valve cover, the axis of the rotating rod is perpendicular to the axis of the fluid passage, one end of the rotating rod, far away from the valve body, extends out of the gate plate cavity is fixedly provided with a rotating handle, one end of the rotating rod, far away from the rotating handle, is fixedly provided with a threaded cylinder, the threaded cylinder and the rotating rod are fixed coaxially, a gate plate is arranged in the valve body, the gate plate is positioned above the gate plate groove, a gate plate hole is arranged on the valve body, a threaded rod is fixedly arranged at one end, far away from the gate plate groove, a, keep away from in the fluid passage one of flashboard groove serve and be equipped with slide and slide sliding fit have the slider, the flashboard is kept away from one of threaded rod and is served and be fixed with protruding and protruding upward rotation and install the roof, the roof is kept away from and is rotated between bellied one end and the slider and be connected, fluid passage's side is located rectangle and roof and flashboard all with the rectangle.

Preferably, a sealing plate is fixed at one end, far away from the flashboard groove, of the flashboard, a sealing groove is formed in the flashboard hole, and a sealing block is fixed on the sealing plate.

Preferably, the valve body is provided with a through hole which enables the fluid passage to be communicated with the gate plate cavity.

Preferably, be equipped with the stopper on the through-hole and be fixed with the connecting rod on the stopper, threaded fit has the bolt in being equipped with air vent and the air vent on the valve gap, the bolt stretches into fixed connection between the one end in flashboard chamber and the connecting rod.

Preferably, the top plate is provided with a wavy reinforcing plate, and the reinforcing plate is positioned on one surface departing from the flashboard.

The utility model has the advantages that: the impact of impulsive force generated when fluid flows through the flashboard can be reduced, so that the vibration of the flashboard is reduced, and the service life of the valve is prolonged. And the threaded barrel is matched with the threaded rod, so that the damage of fluid to the valve control assembly is reduced. The sealing performance of the valve when being completely closed is improved, when the valve is completely closed, fluid in the gate plate cavity can be completely discharged, damage to the sealing piece is reduced, and the service life of the valve is further prolonged.

Drawings

Fig. 1 is a schematic structural view of the whole front of the present invention.

Fig. 2 is a schematic structural view of the whole side of the present invention.

Fig. 3 is a schematic structural diagram of the slide block shaft side of the present invention.

Fig. 4 is a schematic structural view of the protruding shaft side of the present invention.

Fig. 5 is a schematic structural view of the back of the reinforcing plate of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Given by figures 1, 2, 3, 4 and 5, a non-rising stem gate valve comprises a valve body 1 and a valve cover 2, and is characterized in that the valve body 1 comprises a fluid passage 11 and a gate plate groove 17 arranged in the fluid passage 11, a gate plate cavity 3 is left between the valve cover 2 and the valve body 1 and between the valve cover 2 and the valve body 1, a rotating rod 4 is rotatably arranged on the valve cover 2, the axis of the rotating rod 4 is perpendicular to the axis of the fluid passage 11, one end of the rotating rod 4 far away from the valve body 1 extends out of the gate plate cavity 3, one end of the rotating rod 4 far away from the gate plate cavity 3 is fixedly provided with a rotating handle 5, one end of the rotating rod 4 far away from the rotating handle 5 is fixedly provided with a threaded cylinder 6 and between the threaded cylinder 6 and the rotating rod 4, a gate plate 16 and a gate plate 16 arranged above the gate plate groove 17 are arranged in the valve body 1, a gate plate hole 10 and a gate plate 16 are arranged in the gate plate hole 10 in a sliding way, one of flashboard 16 deviates from flashboard groove 17 serves and is fixed with threaded rod 7, coaxial line setting and screw thread fit between screw thread section of thick bamboo 6 and the threaded rod 7, it has slider 13 to keep away from one of flashboard groove 17 in fluid passage 11 and serve and be equipped with slide 12 and slide 12 sliding fit in one, flashboard 16 keeps away from one of threaded rod 7 and serves and be fixed with protruding 22 and rotate and install roof 14, roof 14 keeps away from and rotates between protruding 22's one end and the slider 13 to be connected, fluid passage 11's side is located rectangle and roof 14 and flashboard 16 all with the rectangle.

When the device is used, the device is firstly installed on a required pipeline, the valve is in a closed state at the moment, when the valve is required to be opened, the rotating handle 5 is rotated to drive the rotating rod 4 to rotate, the rotating rod 4 is fixedly provided with the threaded cylinder 6, the threaded rod 7 is installed on the threaded cylinder 4 in a threaded matching manner, as the threaded rod 7 is fixedly connected with the flashboard 16, the flashboard 16 can only slide up and down, the threaded rod 7 cannot be driven to rotate when the threaded cylinder 6 rotates, the threaded rod 7 can move up and down through the threaded matching between the threaded cylinder 6 and the threaded rod 7, so that the flashboard 16 can move up and down, at the moment, the rotating handle 5 is rotated to drive the flashboard 16 to move towards the flashboard cavity 3, so as to open the fluid channel 11, at the moment, the top plate 14 installed on the flashboard 16 rotates to move upwards when the flashboard 16, the valve is driven to move upwards, the top plate 14 moves upwards, the sliding block 13 slides in the slide rail 12, the top plate 14 is arranged in an inclined mode, pressure of fluid on the gate plate 16 is reduced, vibration of the gate plate 16 caused by the pressure of the fluid is reduced, damage to the valve is reduced, and the service life of the valve is prolonged. The side of the fluid passage 11 is located in the rectangle, and the top plate 14 and the gate plate 16 are both rectangular, so that after the gate plate 16 is completely opened, the top plate 14 cannot be affected by the valve body 1, the using effect of the device is improved, and meanwhile, the square top plate 14 and the gate plate 16 enable the top plate 14 to completely shield the gate plate 16, so that the damage of the valve is further reduced, and the service life of the valve is prolonged. The top plate 14 moves along with the gate plate 16, the gate plate 16 can be protected all the time, and the service life of the valve is further prolonged.

And a sealing plate 8 is fixed at one end of the gate plate 16, which is far away from the gate plate groove 17, and a sealing groove is arranged at the position of the gate plate hole 10, and a sealing block 9 is fixed on the sealing plate 8.

In order to ensure the sealing performance of the shutter 16 when the shutter 16 is closed, a sealing groove is arranged at the position of the shutter hole 10, a sealing plate 8 is fixed on the shutter 16, when the shutter 16 is completely closed, the sealing plate 8 is positioned in the sealing groove, so that the sealing effect is further improved, and the sealing performance in use is further improved by adding a sealing block 9 on the sealing plate 8.

The valve body 1 is provided with a through hole 18, and the through hole 18 enables communication between the fluid passage 11 and the shutter plate cavity 3.

The through hole 18 which enables the fluid channel 11 to be communicated with the flashboard cavity 3 is formed in the valve body 1, so that when the flashboard 16 is completely closed, fluid in the flashboard cavity 3 can be discharged through the through hole 18, corrosion to the interior of the valve caused by the fluid is reduced, and the service life of the valve is further prolonged.

The through hole 18 is provided with a plug 23, a connecting rod 21 is fixed on the plug 23, the valve cover 2 is provided with a vent hole 20, a bolt 19 is matched with the vent hole 20 through threads, and one end of the bolt 19 extending into the gate plate cavity 3 is fixedly connected with the connecting rod 21.

When the valve is completely closed, an outlet of the rear through hole 18 of the gate plate cavity 3 is formed, in order to avoid the situation that fluid cannot be completely discharged, the vent hole 20 is formed in the valve cover 2 and is sealed through the bolt 19, the situation that the fluid leaks from the vent hole 20 is avoided in use, the bolt 19 is rotated in use, the bolt 19 is separated from the valve cover 2, the connecting rod 21 moves upwards under the driving of the bolt 19, the plug 23 is separated from the through hole 18, the fluid can be discharged through the through hole 18, the pressure inside the gate plate cavity 3 is guaranteed under the action of the vent hole 20, the fluid can be completely discharged out of the gate plate cavity 3, and the service life of the valve is further prolonged.

The top plate 14 is provided with a wavy reinforcing plate 15, and the reinforcing plate 15 is positioned on the surface departing from the flashboard 16.

The top plate 14 is provided with a wave-shaped reinforcing plate 15, so that the using effect of the top plate 14 is improved. The wavy reinforcing plate 15 is arranged along the axial direction of the rotating rod 4, so that the reinforcing plate 15 can not only avoid influencing the flow of fluid when in use, but also further reduce the impulsive force generated by the fluid when in flow, reduce the stress of the flashboard 16 and further prolong the service life of the valve.

The above-mentioned embodiments are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design concept of the present invention should be included in the protection scope defined by the claims of the present invention.

Claims

1. The utility model provides a non-rising stem gate valve, includes valve body (1) and valve gap (2), its characterized in that, valve body (1) is equipped with flashboard groove (17) including fluid passage (11) and fluid passage (11), flange joint and leave flashboard chamber (3) between valve gap (2) and the valve body (1), the axis that rotates on valve gap (2) and install bull stick (4) and bull stick (4) sets up with the axis of fluid passage (11) is perpendicular, the one end that valve body (1) was kept away from in bull stick (4) is stretched out flashboard chamber (3) and bull stick (4) and is stretched out one of flashboard chamber (3) and is served and be fixed with rotation handle (5), bull stick (4) keep away from to rotate and be fixed with a screw thread section of thick bamboo (6) and be fixed with the coaxial line between the bull stick (4) on one end of handle (5), be equipped with flashboard (16) and flashboard (16) in valve body (1) and be located the top of flashboard groove (17), the valve body (1) is provided with a flashboard hole (10) and the flashboard (16) is arranged in the flashboard hole (10) in a sliding way, a threaded rod (7) is fixed on one end of the flashboard (16) departing from the flashboard groove (17), the threaded cylinder (6) and the threaded rod (7) are coaxially arranged and the threaded cylinder (6) and the threaded rod (7) are in threaded fit, a slide way (12) is arranged at one end of the fluid channel (11) far away from the flashboard groove (17), a slide block (13) is matched in the slide way (12) in a sliding way, a bulge (22) is fixed on one end of the flashboard (16) far away from the threaded rod (7), a top plate (14) is rotatably arranged on the bulge (22), one end of the top plate (14) far away from the bulge (22) is rotationally connected with the sliding block (13), the side of the fluid channel (11) is rectangular and the top plate (14) and the gate plate (16) are both rectangular.

2. A non-rising stem gate valve according to claim 1, wherein a sealing plate (8) is fixed to the end of the gate plate (16) remote from the gate plate slot (17), a sealing groove is provided in the gate plate hole (10), and a sealing block (9) is fixed to the sealing plate (8).

3. A non-rising stem gate valve according to claim 1, wherein the valve body (1) is provided with a through hole (18) and the through hole (18) provides communication between the fluid channel (11) and the gate chamber (3).

4. A non-rising stem gate valve according to claim 3, wherein a plug (23) is provided on the through hole (18) and a connecting rod (21) is fixed on the plug (23), a vent hole (20) is provided on the valve cover (2) and a bolt (19) is screw-fitted in the vent hole (20), and one end of the bolt (19) extending into the gate plate cavity (3) is fixedly connected with the connecting rod (21).

5. A dark stem gate valve according to claim 4, characterized in, that the top plate (14) is provided with a wave shaped reinforcement plate (15) and that the reinforcement plate (15) is located at the side facing away from the gate plate (16).