CN219975413U

CN219975413U - Gate valve with good sealing performance

Info

Publication number: CN219975413U
Application number: CN202321481538.XU
Authority: CN
Inventors: 周晓塘; 崔相君; 徐延华
Original assignee: Shandong Jintang Electronic Technology Co ltd
Current assignee: Shandong Jintang Electronic Technology Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-11-07
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to the technical field of gate valves and discloses a gate valve with good sealing performance, which comprises a valve body, wherein one side of the valve body is fixedly connected with a flow inlet pipe, one side of the flow inlet pipe is provided with a fixed groove, the bottom of the interior of the valve body is provided with a circulation pipeline, the interior of the circulation pipeline is movably sleeved with a filter screen, one side of the filter screen is movably connected with a pull rod, the other side of the valve body is fixedly connected with a flow outlet pipe, the top of the valve body is fixedly connected with a sealing seat, the top of the sealing seat is fixedly connected with a packing pressing plate, the middle part of the packing pressing plate is movably sleeved with a valve rod, and the top of the valve rod is fixedly and movably sleeved with a hand wheel; according to the utility model, the filter screen is arranged, so that impurities in the fluid are blocked outside the filter screen, only water molecules are in contact with the gate plate through the filter screen, the gate plate is not worn by the impurities, the service life of the gate plate is prolonged, and the maintenance times of the gate valve are reduced.

Description

Gate valve with good sealing performance

Technical Field

The utility model relates to the technical field of gate valves, in particular to a gate valve with good sealing performance.

Background

The gate valve is a gate plate of an opening and closing piece, the moving direction of the gate plate is vertical to the direction of fluid, the gate valve is arranged on the pipeline and used for cutting off the fluid in the pipeline, the fluid is not circulated, the flow of the fluid in the pipeline is controlled by adjusting the opening of the valve according to the working condition or the use requirement, the fluid flows to one direction, the backflow or the backflow is not allowed, the gate valve with good sealing performance can prevent the leakage of the fluid when in use, and the waste of resources is reduced.

The existing sluice valve with good sealing performance has some problems in actual use, and the problems are as follows:

firstly, fluid flows in from one side of the gate valve and flows out from the other side, the fixation and the rising of the gate plate are controlled to realize the flow of the fluid, most of the fluid contains impurities, and the gate plate is contacted with the impurities for a long time to enable the surface of the gate plate to be worn, so that the sealing performance of the gate valve is reduced, the gate plate of the existing gate valve is difficult to replace after being worn, and the normal conveying of a pipeline is affected.

And secondly, after the flashboard of the gate valve is lifted upwards, fluid in the pipeline flows into the auxiliary groove along with the rising of the flashboard, and after the flashboard is closed in a descending manner, the auxiliary groove still has fluid residues, so that the waste of resources is caused, and meanwhile, the fluid in the auxiliary groove is contacted with the flashboard for a long time to continuously erode the flashboard, so that the tightness of the flashboard is reduced.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a gate valve with good sealing performance, so as to solve the problems in the prior art.

The utility model provides the following technical scheme: the utility model provides a gate valve that leakproofness is good, includes the valve body, one side fixedly connected with inflow pipe of valve body, the fixed slot has been seted up to one side of inflow pipe, the circulation pipeline has been seted up to the inside bottom of valve body, the inside activity of circulation pipeline has cup jointed the filter screen, one side swing joint of filter screen has the pull rod, the opposite side fixedly connected with outflow pipe of valve body, the top fixedly connected with seal holder of valve body, the top fixedly connected with packing clamp plate of seal holder, the middle part activity of packing clamp plate has cup jointed the valve rod, the top of valve rod has cup jointed the hand wheel admittedly, the bottom fixedly connected with flashboard of valve rod, the top fixedly connected with movable plate of flashboard, the sealing washer has been cup jointed at the top of movable plate, the movable slot has all been seted up with the back in the front at circulation pipeline middle part, the auxiliary tank has been seted up to the inside first half of valve body.

Further, the diameter of the fixing groove is the same as the diameter of the periphery of one side of the filter screen, the diameter of the periphery of the right part of the filter screen is the same as the diameter of the circulating pipeline, the filter screen can only pass through water molecules, and the pull rod is positioned in the range of the fixing groove.

Further, the flashboard and the movable plate are both composed of carbon steel, and rubber is wrapped outside the flashboard and the movable plate.

Further, the peripheral size of the sealing ring is the same as the plane size of the auxiliary groove, the joint of the sealing ring and the auxiliary groove is in a sealing state, and the sealing ring is made of rubber.

Further, the size that the movable groove was offered supplies the movable plate to pass through, the area of movable groove top plane is less than the area of auxiliary tank bottom plane 2 square meters, part and the laminating of flashboard between auxiliary tank and the circulation pipeline.

Further, the height of the auxiliary groove is two centimeters greater than the height of the whole flashboard and the movable plate.

Further, when the bottom of flashboard and the bottom of circulation pipeline are laminated, the bottom of sealing washer and the bottom laminating of auxiliary tank.

The utility model has the technical effects and advantages that:

1. according to the utility model, the filter screen is arranged, so that impurities in the fluid are blocked outside the filter screen, only water molecules are in contact with the gate plate through the filter screen, the gate plate is not worn by the impurities, the service life of the gate plate is prolonged, and the maintenance times of the gate valve are reduced.

2. When the filter screen is required to be replaced, the pull rod is rotated and pulled outwards, so that the filter screen is taken out of the gate valve, and the filter screen is more convenient to replace.

3. According to the utility model, the rubber ring is fixed on the moving plate, so that a sealed space is formed in the auxiliary groove above the rubber ring, and the sealing ring drives fluid in the auxiliary groove to be extruded into the circulation pipeline along with downward movement of the flashboard, thereby reducing resource waste and being beneficial to protecting the flashboard.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic side view of the present utility model.

Fig. 3 is a schematic diagram of a filter screen according to the present utility model.

Fig. 4 is a schematic view of a shutter structure according to the present utility model.

Fig. 5 is a schematic view of the ascending structure of the shutter according to the present utility model.

The reference numerals are: 1. a valve body; 101. a flow line; 102. a secondary groove; 103. a moving groove; 2. a flow inlet pipe; 201. a fixing groove; 3. a outflow pipe; 4. a filter screen; 401. a pull rod; 5. a sealing seat; 6. a packing pressing plate; 7. a valve stem; 8. a hand wheel; 9. a flashboard; 901. a moving plate; 902. and (3) sealing rings.

Detailed Description

The embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the present utility model, and the configurations of the structures described in the following embodiments are merely examples, and the gate valve with good sealing properties according to the present utility model is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person skilled in the art without making any creative effort are within the scope of the present utility model.

Referring to fig. 1-5, the utility model provides a gate valve with good sealing performance, which comprises a valve body 1, one side of the valve body 1 is fixedly connected with a flow inlet pipe 2, one side of the flow inlet pipe 2 is provided with a fixed groove 201, the bottom of the interior of the valve body 1 is provided with a circulation pipeline 101, the interior of the circulation pipeline 101 is movably sleeved with a filter screen 4, one side of the filter screen 4 is movably connected with a pull rod 401, the other side of the valve body 1 is fixedly connected with a flow outlet pipe 3, the top of the valve body 1 is fixedly connected with a sealing seat 5, the top of the sealing seat 5 is fixedly connected with a packing pressing plate 6, the middle part of the packing pressing plate 6 is movably sleeved with a valve rod 7, the top of the valve rod 7 is fixedly sleeved with a hand wheel 8, the bottom of the valve rod 7 is fixedly connected with a gate 9, the top of the gate 9 is fixedly connected with a movable plate 901, the top of the movable plate 901 is fixedly sleeved with a sealing ring 902, the front and the back of the middle of the circulation pipeline 101 are provided with a movable groove 103, the upper part of the interior of the valve body 1 is provided with a sub-groove 102, the gate valve opening and closing member is the gate 9, the moving direction of the gate valve is perpendicular to the fluid direction, the gate valve can only be fully opened and closed, and can not be adjusted and forced to be closed, when the two sealing surfaces are closed, the sealing surfaces are sealed, and the sealing performance of the gate valve 9 can be guaranteed.

In a preferred embodiment, the diameter of the fixing groove 201 is the same as the diameter of the periphery of one side of the filter screen 4, the diameter of the periphery of the right part of the filter screen 4 is the same as the diameter of the circulation pipeline 101, a small part of the filter screen 4 is fixed in the fixing groove 201, the rest part of the filter screen 4 is positioned in the circulation pipeline 101, the filter screen 4 can only pass through water molecules, impurities in fluid are blocked outside by the filter screen 4, the pull rod 401 is positioned in the range of the fixing groove 201, and the pull rod 401 cannot block the connection of the inflow pipe 2.

In a preferred embodiment, the shutter 9 and the moving plate 901 are both made of carbon steel, and the shutter 9 made of carbon steel is covered with rubber, so that the service life is longer, and the rubber is beneficial to improving the sealing performance of the gate valve.

In a preferred embodiment, the size of the periphery of the sealing ring 902 is the same as the size of the plane of the auxiliary groove 102, the joint of the sealing ring 902 and the auxiliary groove 102 is in a sealing state, the sealing ring 902 is made of rubber, and the combination of the sealing ring 902 and the moving plate 901 makes the upper part of the sealing ring 902 in the auxiliary groove 102 be a sealing space, so that fluid is prevented from flowing into the auxiliary groove 102 through the sealing ring 902.

In a preferred embodiment, the movable groove 103 is opened to a size through which the movable plate 901 passes, the movable plate 901 moves in the movable groove 103, abrasion of the shutter 9 is reduced, the area of the top plane of the movable groove 103 is 2 square meters smaller than the area of the bottom plane of the auxiliary groove 102, when the shutter 9 moves into the auxiliary groove 102, friction force applied to the shutter 9 is reduced, and a part between the auxiliary groove 102 and the circulation pipeline 101 is attached to the surface of the shutter 9, so that the moving range of the shutter 9 is limited.

In a preferred embodiment, the height of the sub-tank 102 is two cm greater than the height of the shutter 9 and the moving plate 901, and when the valve rod 7 drives the shutter 9 to move into the sub-tank 102, the height of the sub-tank 102 positions the shutter 9 above the range of the circulation pipeline 101, so that the fluid flow range is increased.

In a preferred embodiment, when the bottom of the shutter 9 is attached to the bottom of the flow channel 101, the bottom of the seal 902 is attached to the bottom of the sub-tank 102, the height of the moving plate 901 is determined to penetrate the flow channel 101 and the sub-tank 102, and when the shutter 9 separates the flow channel 101, the seal 902 promotes no fluid to remain in the sub-tank 102.

The working principle of the utility model is as follows: the gate valve is connected to the pipeline, the inflow pipe 2 is connected with the inflow port, the outflow pipe 3 is connected with the outflow port, the gate plate 9 is fixed in the circulation pipeline 101 when fluid does not need to flow, the circulation pipeline 101 is divided into two parts, when fluid needs to flow, the hand wheel 8 is rotated, the valve rod 7 rises along with the rotation of the hand wheel 8, the gate plate 9 is driven to rise, the circulation pipeline 101 is formed into a communicated whole, fluid flows into the inflow pipe 2 and flows out of the outflow pipe 3 through the circulation pipeline 101, impurities in the fluid are blocked outside by the filter screen 4 before the fluid flows into the circulation pipeline 101 through the filtration of the filter screen 4, and the fluid passing through the circulation pipeline 101 enters the auxiliary groove 102 along with the gap between the auxiliary groove 102 and the gate plate 9 along with the upward movement of the gate plate 9;

when fluid is required to be intercepted and does not flow any more, the hand wheel 8 is rotated in the opposite direction, the valve rod 7 drives the flashboard 9 to move downwards, the movable plate 901 moves in the movable groove 103 along with the flashboard 9, the sealing ring 902 is driven to move downwards when the flashboard 9 moves downwards due to the fact that the top of the movable plate 901 is fixedly connected with the sealing ring 902, the sealing ring 902 and the auxiliary groove 102 are connected into a sealing state, when the sealing ring 902 moves downwards along with the movable plate 901, fluid in the auxiliary groove 102 is extruded downwards, when the bottom of the sealing ring 902 is attached to the bottom of the auxiliary groove 102, the fluid in the auxiliary groove 102 is completely extruded into the circulation pipeline 101 by the sealing ring 902, meanwhile, the bottom of the flashboard 9 is attached to the bottom of the circulation pipeline 101, and the circulation pipeline 101 is separated into two spaces, so that the fluid stops flowing;

when more impurities are adhered to the longer service life surface of the filter screen 4, the inflow pipe 2 is separated from the inflow port, the pull rod 401 is rotated and pulled out, so that the filter screen 4 is taken out of the circulation pipeline 101, and the impurities adhered to the filter screen 4 are cleaned and then put into the circulation pipeline 101 again, and the fluid is conveyed continuously.

Claims

1. The utility model provides a gate valve that leakproofness is good, includes valve body (1), its characterized in that: one side fixedly connected with inflow pipe (2) of valve body (1), fixed slot (201) have been seted up to one side of inflow pipe (2), circulation pipeline (101) have been seted up to the inside bottom of valve body (1), inside activity of circulation pipeline (101) has cup jointed filter screen (4), one side swing joint of filter screen (4) has pull rod (401), opposite side fixedly connected with play flow tube (3) of valve body (1), the top fixedly connected with seal holder (5) of valve body (1), the top fixedly connected with packing clamp plate (6) of seal holder (5), valve rod (7) have been cup jointed in the middle part activity of packing clamp plate (6), hand wheel (8) have been cup jointed in the top activity of valve rod (7), the bottom fixedly connected with flashboard (9) of flashboard (9), movable plate (901) are fixed on the top of movable plate (901), movable slot (103) have all been seted up with the back in the front at the middle part of circulation pipeline (101), sub-slot (102) have been seted up in the inside half.

2. The gate valve with good sealing performance according to claim 1, wherein: the diameter of the fixing groove (201) is the same as the diameter of the periphery of one side of the filter screen (4), the diameter of the periphery of the right part of the filter screen (4) is the same as the diameter of the circulating pipeline (101), the filter screen (4) can only pass through water molecules, and the pull rod (401) is positioned in the range of the fixing groove (201).

3. The gate valve with good sealing performance according to claim 1, wherein: the flashboard (9) and the movable plate (901) are both made of carbon steel, and rubber is wrapped outside the flashboard.

4. The gate valve with good sealing performance according to claim 1, wherein: the size of the periphery of the sealing ring (902) is the same as the size of the plane of the auxiliary groove (102), the joint of the sealing ring (902) and the auxiliary groove (102) is in a sealing state, and the sealing ring (902) is made of rubber.

5. The gate valve with good sealing performance according to claim 1, wherein: the size that movable groove (103) offered supplies movable plate (901) to pass through, the area of movable groove (103) top plane is less than the area of auxiliary tank (102) bottom plane 2 square meters, part and flashboard (9) surface laminating between auxiliary tank (102) and circulation pipeline (101).

6. The gate valve with good sealing performance according to claim 1, wherein: the height of the auxiliary groove (102) is two centimeters greater than the height of the whole flashboard (9) and the moving plate (901).

7. The gate valve with good sealing performance according to claim 1, wherein: when the bottom of the flashboard (9) is attached to the bottom of the circulation pipeline (101), the bottom of the sealing ring (902) is attached to the bottom of the auxiliary groove (102).