CN212429940U

CN212429940U - Gate valve convenient to use

Info

Publication number: CN212429940U
Application number: CN202021093606.1U
Authority: CN
Inventors: 田玉华; 方圣学; 张如灵; 叶春根
Original assignee: Zhejiang Qingtian Huadian Machinery Co ltd
Current assignee: Zhejiang Qingtian Huadian Machinery Co ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-01-29
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a gate valve convenient to use, including the valve body, be equipped with the lift chamber in the valve body, lift intracavity bottom is through lift hole and valve body inner pipeline intercommunication, the lift intracavity is equipped with the valve plate, valve body inner top is equipped with the control chamber, control intracavity bottom is fixed with the fixed plate, the spout has been seted up at control intracavity top, two spout insides are connected with the slide bar respectively, the sliding seat has been cup jointed respectively on two slide bars, two sliding seat bottoms are connected with the connecting rod respectively, control intracavity top is inserted and is equipped with the screw rod, the screw rod lower extreme is connected with middle fixed block through the bearing, two connecting rods articulate with middle fixed block both sides respectively, middle fixed block bottom is fixed with the bottom plate, the bottom plate bottom is connected with the lower dead lever, the lower; the valve plate lower extreme is equipped with the control subassembly that rises, the utility model provides a flashboard lift simple operation is high-efficient, open convenient to use's gate valve that convenience and leakproofness are good.

Description

Gate valve convenient to use

Technical Field

The utility model relates to a gate valve, concretely relates to gate valve convenient to use.

Background

Along with the development of the gate valve industry in China, the variety of the gate valve is continuously increased, and the application of the gate valve is more and more extensive. Current gate valve structure generally includes the valve body, the both ends of pipeline direction are equipped with import and export respectively in the valve body, the inside valve plate that is used for controlling the interior pipeline break-make that is provided with of valve body, the valve body top is provided with the valve rod that is used for controlling the valve plate lift, the hand wheel through operating the valve rod top rotates the valve rod when carrying out the break-make, drive valve plate lift break-make, the gate valve of current structure operation control flashboard on the one hand goes up and down high-efficient convenient inadequately, the flashboard receives the pressure of medium in the pipeline when opening and opens inconveniently, on the other hand valve plate constantly goes up and down in the use between its and the interior pipeline leakproofness also can be more and more poor.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a flashboard lift simple operation is high-efficient, open convenient to use's gate valve that convenience and leakproofness are good.

The technical scheme of the utility model is realized like this: the utility model provides a gate valve convenient to use, includes the valve body, the both ends of valve body pipeline direction are equipped with import and export, its characterized in that respectively: a lifting cavity is arranged in the valve body, the bottom in the lifting cavity is communicated with a pipeline in the valve body through a lifting hole, the inner aperture of the lifting hole is gradually reduced from bottom to top, a valve plate is arranged in the lifting cavity in a sliding and lifting manner, a control cavity communicated with the lifting cavity is arranged at the top in the valve body, a fixing plate is fixed at the bottom in the control cavity, sliding grooves are symmetrically formed in the top in the control cavity in the left-right direction, transverse sliding rods are fixedly connected to the inner parts of the two sliding grooves respectively, sliding seats are respectively sleeved on the two sliding rods in a sliding manner, connecting rods are respectively rotatably connected to the bottoms of the two sliding seats, a screw rod is inserted into the top in the control cavity through threaded rotation, the upper end of the screw rod penetrates out of the control cavity and is connected with a hand wheel, the lower, a lower fixing plate is fixed at the bottom of the middle fixing block, a lower fixing rod is connected to the bottom of the lower fixing plate, the lower end of the lower fixing rod penetrates through the fixing plate in a sliding mode and then is connected with the upper end of the valve plate, and a connecting spring is arranged between the fixing plate and the lower fixing plate around the lower fixing rod; the valve plate lower extreme is provided with the control and rises the tight subassembly, the control rises the tight subassembly including setting up the elastic sealing pad that has the inclined plane at valve plate lower extreme tip, the middle part is provided with the compression spring that is used for controlling its horizontal tight that rises in the elastic sealing pad, compression spring is in compression state when the elastic sealing pad is located the lift hole, just be located and be provided with the sealed seal groove that is used for cooperating the elastic sealing pad under the lift hole in the valve body pipeline, the both sides of seal groove agree with mutually with the inclined plane of elastic sealing pad, just be located the lift hole below left and right sides and be provided with and be used for the gliding direction subassembly of direction elastic sealing pad in the valve body pipeline.

By adopting the technical scheme, when in use, the hand wheel positioned at the top of the valve body is operated and rotated to drive the screw rod to rotate, the lower end of the screw rod is rotatably connected with the bearing, the outer ring of the bearing is fixedly connected with the middle fixed block, the lower ends of the two connecting rods are respectively hinged with the left side and the right side of the middle fixed block, the upper ends of the two connecting rods are respectively rotatably connected with the bottoms of the two sliding seats, so that the middle fixed block and the lower fixed rod are driven to lift downwards in the downward rotating process of the screw rod, the two sliding seats are relatively close to slide on the two sliding rods, the lower fixed rod slides to penetrate through the fixed plate to compress the compression spring positioned between the lower fixed plate and the fixed plate, the valve plate is driven to descend, the elastic sealing gasket with an inclined plane at the lower end part, until sliding to the valve body inner pipeline and in the seal groove under the lifting hole, the two sides of the seal groove are matched with the inclined plane of the elastic sealing gasket, under the return action of the compression spring, the elastic sealing gasket expands and is abutted against the valve body in the seal groove, the valve plate descends to the valve body inner pipeline, the top of the valve plate is still in the lifting cavity, so as to form seal, when the valve body inner pipeline needs to be opened, the hand wheel is rotated to drive the screw rod to rotate, the screw rod drives the middle fixing block to ascend and descend, the middle fixing block can enable the included angle between the two connecting rods to be enlarged, the two connecting rods push the two sliding seats to move on the two sliding rods, the connecting spring is previously compressed, when the middle fixing block is far away from the fixing plate, the connecting spring needs to restore the original state, the connecting spring pushes the lower fixing rod to slide upwards to drive the flashboard to ascend, compared with the prior art, the control is opened pipeline easy operation in the valve body is convenient, sets up the seal groove in the pipeline in the valve body to adopt the sealed cooperation compression spring of elastic sealing to realize sealed, improved sealed effect, when needs are opened, the contra-rotation hand wheel can, the utility model provides a flashboard lift simple operation is high-efficient, open convenient and the good gate valve of convenient to use of leakproofness.

The utility model discloses further set up to: the guide assembly comprises filter screens which are arranged in the pipeline in the valve body and located on the left side and the right side below the lifting hole, and the side wall, opposite to the filter screens, of one side slides in extrusion contact with the left side and the right side of the elastic sealing gasket respectively.

Through adopting above-mentioned technical scheme, have the filtration pore on the filter screen on the one hand, can supply the medium to pass through when opening valve body inner tube way, on the other hand can also intercept the impurity in the medium to at valve plate lift in-process, supply the relative one side lateral wall of elastic sealing gasket left and right sides along two filter screens and provide the guide effect when sliding.

The utility model discloses further set up to: a circle of annular groove is formed in the circumferential direction of the side wall of the top of the valve plate, and an annular sealing gasket is arranged inside the annular groove.

By adopting the technical scheme, in order to further improve the valve plate in the lifting process, the sealing degree between the outer wall of the valve plate and the inner wall of the lifting cavity is improved, a circle of annular groove is formed in the circumferential direction of the side wall of the top of the valve plate, and an annular sealing gasket is arranged inside the annular groove and used for further preventing a medium from entering the top of the lifting cavity and eroding internal parts of the control cavity from the position between the outer wall of the valve plate and the inner wall of the lifting cavity to influence the whole service life of the gate valve in the lifting process.

The utility model discloses further set up to: the annular sealing washer is made of rubber.

By adopting the technical scheme, the annular sealing washer made of the rubber material has good elasticity on one hand and is sealed in place, and on the other hand, the use cost is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in figure 1, the utility model discloses a gate valve convenient to use, which comprises a valve body 1, wherein the two ends of the pipeline direction in the valve body 1 are respectively provided with an inlet 3 and an outlet 4, in the embodiment of the utility model, a lifting cavity 5 is arranged in the valve body 1, the bottom in the lifting cavity 5 is communicated with the pipeline in the valve body 1 through a lifting hole 2, the inner aperture of the lifting hole 2 is gradually reduced from bottom to top, a valve plate 6 is arranged in the lifting cavity 5 in a sliding and lifting way, a control cavity 21 communicated with the lifting cavity 5 is arranged at the top in the valve body 1, a fixed plate 22 is fixed at the bottom in the control cavity 21, chutes 23 are symmetrically arranged at the top in the control cavity 21, transverse sliding rods 24 are respectively and fixedly connected in the two chutes 23, sliding seats 25 are respectively and slidably sleeved on the two sliding rods 24, connecting rods 26 are respectively and rotatably connected at the bottoms, a screw 27 is inserted into the top of the control cavity 21 through screw rotation, a hand wheel 28 is connected to the upper end of the screw 27 after penetrating out of the control cavity 21, a bearing is rotatably connected to the lower end of the screw 27, a middle fixing block 29 is fixedly connected to the outer ring of the bearing, the lower ends of two connecting rods 26 are respectively hinged to the left side and the right side of the middle fixing block 29, a lower fixing plate 30 is fixed to the bottom of the middle fixing block 29, a lower fixing rod 31 is connected to the bottom of the lower fixing plate 30, the lower end of the lower fixing rod 31 is connected to the upper end of the valve plate 6 after penetrating through the fixing plate 22 in a sliding manner, and a connecting; 6 lower extreme of valve plate is provided with the control and rises the tight subassembly, the control rises the tight subassembly including setting up the elastic sealing pad 11 that has the inclined plane at 6 lower extreme tip of valve plate, the middle part is provided with the compression spring 12 that is used for controlling its horizontal rising that rises in the elastic sealing pad 11, compression spring 12 is in compression state when elastic sealing pad 11 is located lift hole 2, just be provided with under lift hole 2 in the pipeline of valve body 1 and be used for cooperating the sealed seal groove 13 of elastic sealing pad 11, the both sides of seal groove 13 agree with mutually with the inclined plane of elastic sealing pad 11, just be located the lift hole 2 below left and right sides and be provided with the gliding direction subassembly that is used for direction elastic sealing pad 11 in the pipeline of valve body 1.

By adopting the technical scheme, when in use, the hand wheel 28 positioned at the top of the valve body 1 is operated and rotated to drive the screw 27 to rotate, the lower end of the screw 27 is rotatably connected with the bearing, the outer ring of the bearing is fixedly connected with the middle fixed block 29, the lower ends of the two connecting rods 26 are respectively hinged with the left side and the right side of the middle fixed block 29, the upper ends of the two connecting rods 26 are respectively rotatably connected with the bottoms of the two sliding seats 25, so that the middle fixed block 29 and the lower fixed rod 31 are driven to move downwards in the downward rotating process of the screw 27, the two sliding seats 25 slide on the two sliding rods 24 in a relatively close manner, the lower fixed rod 31 slides to penetrate through the fixed plate 22, the compression spring 12 positioned between the lower fixed plate 30 and the fixed plate 22 is compressed to drive the valve plate 6 to move downwards, the elastic sealing gasket 11 with an inclined, the compression spring 12 in the elastic sealing gasket 11 is in a compression state until sliding into the pipeline in the valve body 1 and being positioned in the sealing groove 13 right below the lifting hole 2, two sides of the sealing groove 13 are matched with the inclined plane of the elastic sealing gasket 11, under the restoring action of the compression spring 12, the elastic sealing gasket 11 is expanded and is abutted against the valve body 1 in the sealing groove 13, the valve plate 6 is lowered into the pipeline in the valve body 1, the top of the valve plate is also positioned in the lifting cavity 5, so as to form sealing, when the pipeline in the valve body 1 needs to be opened, the hand wheel 28 is rotated to drive the screw 27 to rotate, the screw 27 drives the middle fixing block 29 to lift upwards, the included angle between the two connecting rods 26 can be increased by the middle fixing block 29, the two connecting rods 26 push the two sliding seats 25 to move on the two sliding rods 24, the connecting spring 32 is compressed previously, and when the, connecting spring 32 will resume original state, and connecting spring 32 promotes down the dead lever 31 and goes up the sliding motion, drives the 6 ascending removal of flashboard, and elastic sealing pad 11 is ascending in the same direction as the guide assembly and is getting back to in the lift hole 2 afterwards, and for prior art, the control is opened 1 interior pipeline of valve body easy operation conveniently, sets up the seal groove in 1 pipeline of valve body to adopt the sealed cooperation compression spring of elastic sealing to realize sealing, improved sealed effect, when needs are opened, the contra-rotation hand wheel can, the utility model provides a flashboard lift simple operation is high-efficient, open convenient and the good gate valve of convenient to use of leakproofness.

The utility model discloses in the embodiment, the direction subassembly includes and sets up filter screen 14 in the valve body 1 interior pipeline and be located the 2 below left and right sides in lift hole, one side lateral wall that filter screen 14 is relative slides with the 11 left and right sides extrusion contact of elastic sealing pad respectively.

Through adopting above-mentioned technical scheme, on the one hand have the filtration pore on the filter screen 14, can supply the medium to pass through when opening valve body 1 inner tube way, on the other hand, can also intercept the impurity in the medium to at valve plate 6 lift in-process, supply that the relative one side lateral wall of elastic sealing gasket 11 left and right sides along two filter screens 14 provides the guide effect when sliding.

In the embodiment of the utility model, round ring channel 15 has been seted up to 6 top lateral walls circumference of valve plate, ring channel 15 is inside to be provided with ring seal ring 16.

Through adopting above-mentioned technical scheme, in order to further improve valve plate 6 at the lift in-process, improve the leakproofness between 6 outer walls of valve plate and the 5 inner walls in lift chamber, seted up round ring channel 15 at 6 top lateral wall circumference of valve plate, ring channel 15 is inside to be provided with ring seal ring 16 for further prevent at valve plate 6 at the lift in-process, the medium enters into lift chamber 5 interior top and erodees the whole life-span of gate valve from between 6 outer walls of valve plate and the 5 inner walls in lift chamber 21 internals.

In the embodiment of the present invention, the annular sealing washer 16 is made of rubber.

By adopting the technical scheme, the annular sealing gasket 16 made of rubber has good elasticity and can be sealed in place on one hand, and the use cost is low on the other hand.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a gate valve convenient to use, includes valve body (1), the both ends of pipeline direction are equipped with import (3) and export (4) respectively in valve body (1), its characterized in that: the improved valve is characterized in that a lifting cavity (5) is arranged in the valve body (1), the bottom in the lifting cavity (5) is communicated with a pipeline in the valve body (1) through a lifting hole (2), the inner aperture of the lifting hole (2) is gradually reduced from bottom to top, a valve plate (6) is arranged in the lifting cavity (5) in a sliding and lifting mode, a control cavity (21) communicated with the lifting cavity (5) is arranged at the top in the valve body (1), a fixing plate (22) is fixed at the bottom in the control cavity (21), sliding grooves (23) are symmetrically formed in the top in the control cavity (21) in a left-right mode, transverse sliding rods (24) are fixedly connected to the inner portions of the two sliding grooves (23) respectively, sliding seats (25) are sleeved on the two sliding rods (24) in a sliding mode respectively, connecting rods (26) are rotatably connected to the bottoms of the two sliding seats (25) respectively, and, the upper end of the screw rod (27) penetrates out of the control cavity (21) and then is connected with a hand wheel (28), the lower end of the screw rod (27) is rotatably connected with a bearing, the outer ring of the bearing is fixedly connected with a middle fixing block (29), the lower ends of two connecting rods (26) are respectively hinged with the left side and the right side of the middle fixing block (29), a lower fixing plate (30) is fixed at the bottom of the middle fixing block (29), a lower fixing rod (31) is connected at the bottom of the lower fixing plate (30), the lower end of the lower fixing rod (31) penetrates through the fixing plate (22) in a sliding mode and then is connected with the upper end of the valve plate (6), and a connecting spring (32) is; valve plate (6) lower extreme is provided with the control and rises the tight subassembly, the control rises the tight subassembly including setting up elastic sealing pad (11) that have the inclined plane at valve plate (6) lower extreme tip, the middle part is provided with compression spring (12) that are used for controlling its horizontal tight that rises in elastic sealing pad (11), compression spring (12) are in compression state when elastic sealing pad (11) are located lift hole (2), just be located lift hole (2) in valve body (1) inner tube way and be provided with seal groove (13) that are used for cooperating elastic sealing pad (11) to seal, the both sides of seal groove (13) agree with mutually with the inclined plane of elastic sealing pad (11), just be located lift hole (2) below left and right sides in valve body (1) inner tube way and be provided with and be used for the gliding direction subassembly of direction elastic sealing pad (11).

2. A gate valve for convenient use according to claim 1, wherein: the guide assembly comprises a filter screen (14) which is arranged in the pipeline in the valve body (1) and is positioned on the left side and the right side below the lifting hole (2), and one side wall, opposite to the filter screen (14), slides in extrusion contact with the left side and the right side of the elastic sealing gasket (11) respectively.

3. A gate valve for convenient use according to claim 1 or 2, wherein: a circle of annular groove (15) is circumferentially formed in the side wall of the top of the valve plate (6), and an annular sealing gasket (16) is arranged inside the annular groove (15).

4. A gate valve for convenient use according to claim 3, wherein: the annular sealing washer (16) is made of rubber.