CN213899954U

CN213899954U - Practical gate valve

Info

Publication number: CN213899954U
Application number: CN202022763480.0U
Authority: CN
Inventors: 刘冰梅; 王忠炎; 唐仁林; 陈锡红
Original assignee: Zhejiang Shenrui Fluid Control Co ltd
Current assignee: Zhejiang Changgu Metal Manufacturing Co.,Ltd.
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-06
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to a practical gate valve, including the valve body, the both ends of pipeline direction are equipped with import and export respectively in the valve body, are provided with the lift chamber in the valve body, and the lift intracavity slides and goes up and down to be provided with the valve plate, the top is provided with the screw that communicates with the lift chamber in the valve body, and screw department rotates and is provided with the valve rod, and the valve rod lower extreme rotates and is connected with the bearing, and the bearing inner race is fixed at the valve plate top, is connected with the hand wheel after wearing out the lift chamber on the valve rod upper end, and lift intracavity bottom is through lift hole and pipeline intercommunication in the valve body, and the inner bore diameter of lift hole reduces from bottom to top gradually, and the valve plate lower extreme is provided with the control tight subassembly that rises, just is located lift hole below the left and right sides and is provided with and is used for leading the gliding guide assembly of elastic sealing pad in the pipeline in the valve body, and the valve body top is provided with the regulation locking assembly that is used for adjusting the locking valve rod, the utility model provides a leakproofness is good, High and the practical gate valve of the fastening hand wheel of being convenient for operate of stability.

Description

Practical gate valve

Technical Field

The utility model relates to a practical gate valve.

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. The existing gate valve structure generally comprises a valve body, an inlet and an outlet are respectively arranged at two ends of a pipeline in the valve body, a valve plate for controlling the on-off of the pipeline is arranged in the valve body, a valve rod for controlling the lifting of the valve plate is arranged at the top of the valve body, when the gate valve is switched on and off, the valve rod is rotated by operating the hand wheel at the top of the valve rod to drive the valve plate to be switched on and off in a lifting way, on one hand, the sealing performance between the valve plate and an inner pipeline which is continuously lifted and lowered in the using process of the valve plate is also worse and worse due to abrasion, so that the gate valve is easy to leak, on the other hand, the existing hand wheel does not have a locking function, in the process of medium circulation, the valve plate is subjected to larger pressure of the medium, so the phenomenon of valve rod rotation is easily caused, thereby lead to the gate valve to appear the seepage or the phenomenon that the velocity of flow is changed, reduced the stability in use of whole gate valve, the practicality is relatively poor, from this needs to improve.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a leakproofness is good, stability is high and be convenient for operate the practical gate valve of fastening hand wheel.

The technical scheme of the utility model is realized like this: the utility model provides a practical gate valve, includes the valve body, the both ends of pipeline direction are equipped with import and export respectively in the valve body, be provided with the lift chamber in the valve body, the lift intracavity slides and goes up and down to be provided with the valve plate, the top is provided with the screw with lift chamber intercommunication in the valve body, screw department rotates and is provided with the valve rod, the valve rod lower extreme rotates and is connected with the bearing, the bearing inner race is fixed at the valve plate top, be connected with hand wheel, its characterized in that after wearing out the lift chamber on the valve rod upper end: the bottom of 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 control tensioning assembly is arranged at the lower end of the valve plate and comprises an elastic sealing gasket which is arranged at the end part of the lower end of the valve plate and provided with an inclined plane, a tensioning spring used for controlling the transverse tensioning of the elastic sealing gasket is arranged in the middle of the elastic sealing gasket, the tensioning spring is in a compression state when the elastic sealing gasket is positioned in the lifting hole, a sealing groove used for being matched with the elastic sealing gasket for sealing is arranged in the pipeline in the valve body and under the lifting hole, two sides of the sealing groove are matched with the inclined plane of the elastic sealing gasket, guide assemblies used for guiding the elastic sealing gasket to slide are arranged in the pipeline in the valve body and on the left side and the right side below the lifting hole, and an adjusting and locking assembly used for adjusting and locking the valve rod is arranged at the top of the valve body, the adjusting and locking assembly comprises a control seat arranged at the top of the valve body, a transverse moving groove is formed in the control seat towards one end of the valve rod, a sliding block is arranged in the transverse moving groove along transverse sliding, one end, far away from the valve rod, of the sliding block is connected with a control rod, one end, far away from the sliding block, of the control rod transversely penetrates through the control seat and then is connected with a pulling ring, a spring is wound on the side wall of the control rod and is located in the transverse moving groove along the length direction, and a rubber ejector block is arranged at one end, towards the valve rod, of the sliding block.

By adopting the technical scheme, in the actual use process, the pulling ring is pulled towards the direction far away from the valve rod to drive the control rod and the sliding block to slide along the transverse moving groove, the spring is wound on the side wall of the control rod and positioned in the transverse moving groove along the length direction, the spring is compressed and stored in the sliding process, at the moment, the end part of the rubber jacking block stops propping against the outer wall of the control rod, then, the hand wheel is rotated to operate the hand wheel, the hand wheel drives the valve rod and the valve plate to descend, the guide assemblies for guiding the elastic sealing gasket to slide are arranged in the pipeline in the valve body and positioned at the left side and the right side below the lifting hole, the elastic sealing gasket slides downwards along the guide assemblies, the tension spring in the elastic sealing gasket is in a compressed state in the sliding process until the elastic sealing gasket slides into the sealing groove in the pipeline in the valve body and positioned right below the lifting hole, the two sides of the sealing groove are matched with the inclined surface of the elastic sealing gasket, under the restoring action of the tension spring, the elastic sealing gasket rises, and offsets with the valve body in the seal groove, the valve plate descends in the valve body pipeline, its top still is in the lift chamber, thereby form sealedly, accomplish the valve rod and rotate the back, loosen the pulling ring, under the spring answer effect, it thinks the valve rod direction slip to drive control lever and slider, and withstand the valve rod outer wall through the rubber kicking block, lock the valve rod, in order to prevent that pivoted phenomenon from appearing in the valve rod of medium flow process, avoid resulting in the gate valve to appear the seepage or the phenomenon that the velocity of flow is changed, improved the stability in use of whole gate valve, the utility model provides a good, the high and practical gate valve of the fastening hand wheel of being convenient for of leakproofness.

The utility model discloses further set up to: the rubber kicking block is evenly arranged a plurality of vertical grooves along the fore-and-aft direction in proper order towards the one end of valve rod, the transversal triangle-shaped of personally submitting of vertical groove.

Through adopting above-mentioned technical scheme, when withstanding the valve rod outer wall in order to further improve the rubber kicking block, to the locking stability of valve rod, evenly arranged a plurality of vertical grooves along the fore-and-aft direction in proper order at the one end of rubber kicking block orientation valve rod, the transversal triangle-shaped of personally submitting of vertical groove for fully produce extrusion elastic deformation when withstanding the valve rod outer wall, increase and the relative contact surface of valve rod for the required power of valve rod rotation increases.

The utility model discloses further set up to: and a crescent rubber cushion block is arranged on the inner ring wall of one side of the pulling ring away from the control seat.

Through adopting above-mentioned technical scheme, in order to further improve the comfort level of finger portion when pulling the pulling ring, be provided with the rubber cushion who is crescent on the lateral inner ring wall of pulling the ring and keeping away from the control cabinet.

The utility model discloses further set up to: the guide assembly is including setting up the filter screen in the valve body pipeline and being located the lift hole below left and right sides, the relative one side lateral wall of filter screen slides with the left and right sides extrusion contact of elastic sealing pad respectively, the round ring channel has been seted up to valve plate top lateral wall circumference, the inside annular rubber seal ring that is provided with of ring channel.

By adopting the technical scheme, when a pipeline in the valve body needs to be opened, the pulling ring is pulled towards the direction far away from the valve rod to drive the control rod and the slide block to slide along the transverse moving groove, the spring is compressed and stored energy in the sliding process, at the moment, the end part of the rubber top block stops abutting against the outer wall of the control rod, then, the operating hand wheel is rotated to drive the valve rod to rotate and ascend, the valve rod drives the valve plate to ascend and descend upwards, the elastic sealing gasket ascends back to the ascending and descending hole along the filter screens on the left side and the right side, the gate valve is opened, then, the pulling ring is loosened, the control rod and the slide block are driven to slide along the valve rod direction under the return action of the spring, the rubber top block abuts against the outer wall of the valve rod to lock the valve rod, in order to further improve the sealing degree between the outer wall of the valve plate and the inner wall of the ascending and descending cavity in the ascending and descending process of the valve plate, a circle of annular groove is formed in the circumferential direction of the side wall of the top of the valve plate, the annular groove is internally provided with an annular rubber sealing washer for further preventing a medium from entering the top in the lifting cavity from the space between the outer wall of the valve plate and the inner wall of the lifting cavity to cause medium leakage and influence on the whole service life of the gate valve in the lifting process of the valve plate.

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.

Fig. 2 is a schematic structural view of a rubber top block in the 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 figures 1-2, the utility model discloses a practical gate valve, 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 and an outlet, a lifting cavity 5 is arranged in the valve body 1, a valve plate 6 is arranged in the lifting cavity 5 in a sliding and lifting way, the top part in the valve body 1 is provided with a screw hole 7 communicated with the lifting cavity 5, the screw hole 7 is rotatably provided with a valve rod 8, the lower end of the valve rod 8 is rotatably connected with a bearing, the outer ring of the bearing is fixed on the top part of the valve plate 6, the upper end of the valve rod 8 penetrates out of the lifting cavity 5 and is connected with a hand wheel 9, in the embodiment of the utility model, the bottom part 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, the lower end of the valve plate 6 is provided with a control tension component, the control tension component comprises an elastic sealing gasket 11 with an inclined plane at the lower end part of the valve plate 6, the middle part in the elastic sealing gasket 11 is provided with a tension spring 12 for controlling the transverse tension of the elastic sealing gasket 11, the tension spring 12 is in a compression state when the elastic sealing gasket 11 is positioned in the lifting hole 2, a sealing groove 13 for matching the elastic sealing gasket 11 to seal is arranged in the pipeline in the valve body 1 and under the lifting hole 2, two sides of the sealing groove 13 are matched with the inclined plane of the elastic sealing gasket 11, guide assemblies for guiding the elastic sealing gasket 11 to slide are arranged in the pipeline in the valve body 1 and on the left and right sides below the lifting hole 2, an adjusting and locking assembly for adjusting and locking the valve rod 8 is arranged at the top of the valve body 1, the adjusting and locking assembly comprises a control seat 21 arranged at the top of the valve body 1, a transverse moving groove 22 is arranged at one end of the control seat 21 facing the valve rod 8, and a sliding block 23 is arranged in the transverse moving, one end of the sliding block 23, which is far away from the valve rod 8, is connected with a control rod 24, one end of the control rod 24, which is far away from the sliding block 23, transversely penetrates out of the control seat 21 and is connected with a pulling ring 25, a spring 26 is wound on the side wall of the control rod 24 and is positioned in the transverse moving groove 22 along the length direction, and one end of the sliding block 23, which faces towards the valve rod 8, is provided with a rubber top block 27.

By adopting the technical scheme, in the actual use process, the ring 25 is pulled and pulled in the direction far away from the valve rod 8 to drive the control rod 24 and the slide block 23 to slide along the transverse moving groove 22, the spring 26 is wound on the side wall of the control rod 24 and positioned in the transverse moving groove 22 along the length direction, the spring 26 is compressed and stored energy in the sliding process, at the moment, the end part of the rubber top block 27 stops propping against the outer wall of the control rod 24, then, the hand wheel 9 is rotated to operate the hand wheel 9, the valve rod 8 and the valve plate 6 are driven to descend by the hand wheel 9, the guide assemblies for guiding the elastic sealing gasket 11 to slide are arranged in the pipeline in the valve body 1 and positioned at the left side and the right side below the lifting hole 2, the elastic sealing gasket 11 slides downwards along the guide assemblies, in the sliding process, the tensioning spring 12 in the elastic sealing gasket 11 is in a compression state until sliding to the sealing groove 13 in the pipeline in the valve body 1 and positioned right below the lifting hole 2, the both sides of seal groove 13 agree with the inclined plane of elastic sealing pad 11 mutually, under the answer effect of tight spring 12 that rises, elastic sealing pad 11 rises, and offset with valve body 1 in seal groove 13, valve plate 6 descends in the pipeline in the valve body 1, its top still is in lift chamber 5, thereby form sealedly, accomplish the valve rod 8 and rotate the back, loosen and stimulate ring 25, under spring 26 answer effect, it thinks that valve rod 8 direction is slided to drive control lever 24 and slider 23, and withstand valve rod 8 outer wall through rubber kicking block 27, lock valve rod 8, in order to prevent that the pivoted phenomenon from appearing in-process valve rod 8 at the medium flow, avoid resulting in the gate valve to appear the seepage or the phenomenon that the velocity of flow is changed, the stability in use of whole gate valve has been improved, the utility model provides a good, high and the practical gate valve of the operation fastening hand wheel of being convenient for of leakproofness.

In the embodiment of the present invention, the rubber top block 27 has a plurality of vertical grooves 28 uniformly arranged in sequence along the front-back direction toward one end of the valve rod 8, and the cross section of the vertical groove 28 is triangular.

Through adopting above-mentioned technical scheme, when withstanding the outer wall of valve rod 8 in order to further improve rubber kicking block 27, to the locking stability of valve rod 8, evenly having arranged a plurality of vertical grooves 28 along the fore-and-aft direction in proper order at rubber kicking block 27 one end towards valve rod 8, the transversal triangle-shaped of personally submitting of vertical groove 28 for fully produce extrusion elastic deformation when withstanding valve rod 8 outer wall, increase and valve rod 8 the relative contact surface, make the required power of valve rod 8 rotation increase.

In the embodiment of the present invention, a crescent rubber pad 29 is disposed on an inner annular wall of one side of the pulling ring 25 away from the control seat 21.

By adopting the technical scheme, in order to further improve the comfort of the fingers when the pulling ring 25 is pulled, the inner ring wall of one side of the pulling ring 25, which is far away from the control seat 21, is provided with the crescent-shaped rubber cushion block 29.

The utility model discloses in the embodiment, the direction subassembly is including setting up filter screen 14 in 1 interior pipeline of valve body and being 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, round ring channel 15 has been seted up to 6 top lateral wall circumference of valve plate, ring channel 15 is inside to be provided with annular rubber seal ring 16.

By adopting the technical scheme, when a pipeline in the valve body 1 needs to be opened, the pulling ring 25 is pulled in the direction away from the valve rod 8, the control rod 24 and the sliding block 23 are driven to slide along the transverse moving groove 22, the spring 26 is compressed and stored in the sliding process, at the moment, the end part of the rubber ejecting block 27 stops ejecting the outer wall of the control rod 24, then, the hand wheel 9 is rotated to drive the valve rod 8 to rotate and rise, the valve rod 8 drives the valve plate 6 to lift upwards, the elastic sealing gasket 11 rises back to the lifting hole 2 along the filter screens 14 on the left side and the right side, the gate valve is opened, then, the pulling ring 25 is loosened, under the return action of the spring 26, the control rod 24 and the sliding block 23 are driven to slide in the direction of the valve rod 8, the rubber ejecting block 27 ejects the outer wall of the valve rod 8, the valve rod 8 is locked, and in order to further improve the sealing degree between the outer wall of the valve plate 6 and the inner wall of the lifting cavity 5 in the lifting process, a circle of annular groove 15 has been seted up to lateral wall circumference at 6 tops of valve plate, and annular groove 15 is inside to be provided with annular rubber seal 16 for further prevent at 6 in-process lifts of valve plate, the medium enters into lift chamber 5 interior top from between 6 outer walls of valve plate and the 5 inner walls of lift chamber and causes the medium to reveal and influence the whole life-span of gate valve.

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 practical gate valve, includes valve body (1), the both ends of pipeline direction are equipped with import and export respectively in valve body (1), be provided with lift chamber (5) in valve body (1), it is provided with valve plate (6) to slide in lift chamber (5), the top is provided with screw (7) with lift chamber (5) intercommunication in valve body (1), screw (7) department rotates and is provided with valve rod (8), valve rod (8) lower extreme rotates and is connected with the bearing, the bearing inner race is fixed at valve plate (6) top, be connected with hand wheel (9) its characterized in that after lift chamber (5) is worn out to valve rod (8) upper end: pipeline intercommunication in bottom through lift hole (2) and valve body (1) in lift chamber (5), the inner aperture of lift hole (2) reduces from bottom to top gradually, valve plate (6) lower extreme is provided with the control tight subassembly that rises, the control tight subassembly that rises is including setting up elastic sealing pad (11) that have the inclined plane at valve plate (6) lower extreme tip, middle part is provided with tight spring (12) that rises that is used for controlling its horizontal rising in elastic sealing pad (11), tight spring (12) are in compression state when elastic sealing pad (11) are arranged in lift hole (2), just be arranged in 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 arranged in lift hole (2) below in valve body (1) inner tube way and be provided with and be used for direction elasticity(s), (2) 11) The valve body (1) top is provided with the regulation locking Assembly who is used for adjusting locking valve rod (8), adjust locking Assembly including setting up control seat (21) at valve body (1) top, sideslip groove (22) have been seted up towards the one end of valve rod (8) in control seat (21), sideslip groove (22) are inside to be provided with slider (23) along sideslip, the one end that valve rod (8) were kept away from in slider (23) is connected with control lever (24), the one end that slider (23) were kept away from in control lever (24) is connected with pulling ring (25) along transversely running through control seat (21) after, on control lever (24) lateral wall and be located sideslip groove (22) along length direction winding spring (26), slider (23) are provided with rubber kicking block (27) towards the one end of valve rod (8).

2. A utility gate valve according to claim 1, wherein: rubber kicking block (27) are evenly arranged a plurality of vertical grooves (28) along the fore-and-aft direction in proper order towards the one end of valve rod (8), the transversal triangle-shaped of personally submitting of vertical groove (28).

3. A utility gate valve according to claim 1, wherein: an inner ring wall of one side of the pulling ring (25) far away from the control seat (21) is provided with a crescent rubber cushion block (29).

4. A utility gate valve according to claim 1, 2 or 3, wherein: the direction subassembly is including setting up filter screen (14) in valve body (1) interior pipeline and being located lift hole (2) below left and right sides, one side lateral wall that filter screen (14) is relative slides with the extrusion contact of the elastic sealing pad (11) left and right sides respectively, round ring channel (15) have been seted up to valve plate (6) top lateral wall circumference, ring channel (15) inside is provided with annular rubber seal ring (16).