CN220268476U

CN220268476U - Throttle gate valve

Info

Publication number: CN220268476U
Application number: CN202321626839.7U
Authority: CN
Inventors: 李军; 陈长青; 刘飞飞; 陈永源; 陈盛亿; 崔远明; 陈盛金
Original assignee: Ticos Technology Group Lishui Fluid Equipment Co ltd
Current assignee: Ticos Technology Group Lishui Fluid Equipment Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-12-29
Anticipated expiration: 2033-06-25

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a throttle gate valve, which comprises a valve body, wherein a flow passage is arranged in the valve body, and a valve rod is arranged on the valve body; the valve plate is connected with the valve rod and can lift and move under the drive of the valve rod, and the valve plate can open or close the flow channel; further comprises: the throttling mechanism is used for controlling the flow rate of the fluid passing through the flow channel; the middle part of the valve plate is a throttling area, the lower part of the valve plate is a starting and closing area, the upper part of the valve plate is a connecting area, and the throttling mechanism is arranged in the middle of the valve plate.

Description

Throttle gate valve

Technical Field

The utility model belongs to the technical field of valves, and particularly relates to a throttle gate valve.

Background

The valve is a pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters (temperature, pressure and flow) of a conveying medium, is a control component in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflow pressure relief and the like, is used for the fluid control system, and has quite various varieties and specifications from the simplest stop valve to various valves used in a very complex automatic control system;

the valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, and is also classified into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard custom valves and the like according to materials;

the gate valve is a common type in the valve, as disclosed in the patent with the application number of CN202223605437.7, and comprises a valve body, wherein the top of the valve body is communicated with a mounting block, the top of the mounting block is provided with a mounting shell, the inside of the mounting shell is provided with a motor, the inside of the mounting block is provided with a flashboard, the top of the flashboard is fixedly provided with a threaded rod, the outer side of the threaded rod is in threaded connection with a threaded cylinder, two sides of the mounting shell are fixedly provided with connecting blocks, bolts are inserted into the connecting blocks, the bottoms of the bolts are connected with the top of the mounting block, and the inside of the mounting shell is provided with a mounting cavity;

the existing gate valve controls the flow through adjusting the gate plate, the accuracy angle of the adjusting method is not suitable for situations requiring accurate throttling, and the gate plate is easy to change in flow caused by misoperation, so that improvement is needed.

Disclosure of Invention

The utility model aims to solve the technical problems and provides a throttle gate valve so as to improve the throttle performance of the gate valve.

In view of this, the present utility model provides a throttle valve comprising,

the valve body is internally provided with a flow channel, and is provided with a valve rod;

the valve plate is connected with the valve rod and can be driven by the valve rod to move up and down, and the valve plate can open or close the flow channel;

further comprises:

a throttle mechanism for controlling the flow of fluid through the flow passage;

the middle part of the valve plate is a throttling area, the lower part of the valve plate is a starting and closing area, the upper part of the valve plate is a connecting area, and the throttling mechanism is arranged in the middle of the valve plate.

In the technical scheme, in the process of using the gate valve, the valve rod drives the valve plate to lift and move, radial opening and closing and approximate flow control are realized through the lower part of the valve plate when the gate valve is used conventionally, and when the flow is required to be controlled accurately, the valve plate is moved down completely so that the middle part of the valve plate is positioned in the flow channel, thereby realizing the accurate control of the flow through the throttle mechanism, and when the valve plate is in misoperation in an allowable range, the throttle mechanism is still positioned in the flow channel range to ensure the throttle effect.

In the above technical solution, further, the throttle mechanism further includes:

the through hole is arranged in the middle of the valve plate and penetrates through the valve plate along the axial direction of the valve plate;

an insert inserted in the through hole;

wherein, the through hole is provided with the ladder groove towards the side of fluid inflow direction, the plug-in components can cooperate with the ladder groove in order to withstand fluid impact.

In the above technical solution, further, the insert further includes:

the annular insertion body is provided with a protruding part, and an inner hole penetrating along the axial direction of the annular insertion body is formed in the annular insertion body;

a tungsten carbide liner disposed on an inner wall of the inner bore;

the throttle ring is arranged on the inner hole and is provided with a throttle hole;

the sealing ring is arranged on the surface of the protruding part and used for sealing the through hole;

wherein, the orifice is arranged along the axial direction of the orifice ring in a penetrating way.

In the above technical solution, further, the seal ring further includes:

the sealing ring comprises a sealing ring main body, wherein a cavity is formed in the sealing ring main body;

the support body is arranged in the cavity;

the sealing bulges are uniformly distributed on the surface of the sealing ring main body.

In the above technical solution, further, the method further includes:

a pressure valve disposed at an inlet of the flow passage and communicating with the flow passage;

the one-way valve is arranged at the outlet of the flow channel and is communicated with the flow channel;

the connecting pipe is arranged between the pressure valve and the one-way valve and is used for communicating the pressure valve with the one-way valve;

wherein the pressure valve can be opened under the pressure of the water hammer.

The beneficial effects of the utility model are as follows:

1. the throttle effect of the gate valve is improved through the arrangement of the throttle mechanism;

2. the structural strength of the sealing ring is improved through the arrangement of the supporting body, the sealing performance between the insert and the through hole is ensured, the service life of the sealing ring is prolonged, a plurality of sealing bulges can form a plurality of seals, and the sealing performance between the insert and the through hole is improved;

3. through the arrangement of the pressure valve and the one-way valve, the influence of the water hammer phenomenon on the gate valve is reduced, and the service life of the gate valve is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic structural diagram of an embodiment of the present utility model.

Fig. 2 is a schematic side view of the structure of fig. 1 according to the present utility model.

FIG. 3 is a schematic view of the internal structure of the valve body of the present utility model.

Fig. 4 is a partially enlarged view of the portion a of fig. 3 according to the present utility model.

FIG. 5 is a schematic view of a seal ring according to the present utility model.

The label in the figure is:

1-valve body, 100-runner, 101-valve rod, 2-valve plate, 20-throttling area, 21-opening and closing area, 22-connecting area, 3-throttling mechanism, 30-through hole, 31-insert, 310-annular insertion body, 311-protruding part, 312-inner hole, 313-tungsten carbide lining, 314-throttling ring, 315-sealing ring, 3150-sealing ring body, 3151-supporting body, 3152-sealing protruding part, 4-pressure valve, 5-one-way valve and 6-connecting pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Example 1:

the embodiment of the application provides a throttle gate valve, which comprises a valve body 1, wherein a flow passage 100 is arranged in the valve body 1, and a valve rod 101 is arranged on the valve body 1; the valve plate 2, the valve plate 2 is connected with the valve rod 101 and can be driven by the valve rod 101 to move up and down, and the valve plate 2 can open or close the flow channel 100;

further comprises: a throttle mechanism 3, the throttle mechanism 3 being for controlling the flow of fluid through the flow passage 100;

the middle part of the valve plate 2 is a throttling area 20, the lower part is a starting and closing area 21, the upper part is a connecting area 22, and the throttling mechanism 3 is arranged in the middle part of the valve plate 2.

The throttle mechanism 3 further includes: a through hole 30, the through hole 30 is arranged in the middle of the valve plate 2 and penetrates the valve plate 2 along the axial direction of the valve plate 2; an insert 31, the insert 31 being inserted in the through hole 30;

wherein, the side of the through hole 30 facing the fluid inflow direction is provided with a stepped groove 32, and the insert 31 may be engaged with the stepped groove 32 to withstand the fluid impact.

The insert 31 further comprises: the annular insertion body 310, the annular insertion body 310 is provided with a protruding portion 311, and the annular insertion body 310 is provided with an inner hole 312 penetrating along the axial direction of the annular insertion body 310; a tungsten carbide lining 313, the tungsten carbide lining 313 being disposed on an inner wall of the inner bore 312; a throttle ring 314, the throttle ring 314 is arranged on the inner hole 312, and an orifice is arranged on the throttle ring 314; a sealing ring 315, wherein the sealing ring 315 is arranged on the surface of the protruding part 311 for sealing the through hole 30;

wherein the orifice is disposed axially through the orifice ring 314.

Moreover, the valve body 1 is a conventional gate valve body 1, a flow passage 100 and a valve rod 101 movable cavity are arranged in the valve body 1, a conventional sealing element is arranged at the communication part of the flow passage 100 and the valve rod 101 movable cavity, a valve plate 2 accommodating space is additionally arranged at the bottom of the valve body 1 and used for accommodating the lower part of the valve plate 2 when the valve plate 2 is in a throttling state, a conventional sealing seat is arranged in the valve plate 2 accommodating space and matched with the lower end of the valve plate 2, a hand wheel is arranged at the upper end of the valve rod 101 to drive the valve rod 101, the valve plate 2 and the valve rod 101 are connected in a conventional connection mode in the prior art, the valve rod 101 can also be driven by a motor, the annular insertion main body 310 is detachably arranged in the through hole 30, the boss 311 on the annular insert body 310 mates with the stepped groove on the through bore 30 after the annular insert body 310 is inserted into the through bore 30, and in some embodiments the size of the orifice bore should not be limited, it being understood that an insert 31 having an orifice of a different size may be provided, and a user may obtain a different orifice effect by removing the insert 31 to replace the orifice of a different size or replace the orifice ring 314 to provide an orifice of a different size, the surface of the boss 311 having an annular groove for mounting a sealing ring concentric with the annular insert body 310, the sealing ring being an annular sealing ring, the sealing ring being mounted in the annular groove.

In this embodiment, during the process of using the gate valve, the valve rod 101 drives the valve plate 2 to move up and down, during normal use, the lower portion of the valve plate 2 is used for radial opening and closing of the flow passage 100 and general flow control, when the flow is required to be precisely controlled, the valve plate 2 is completely moved down so that the middle portion of the valve plate 2 is located in the flow passage 100, thereby precisely controlling the flow through the throttle mechanism 3, and when the valve plate 2 is in misoperation in an allowable range, the throttle mechanism 3 is still located in the range of the flow passage 100 to ensure the throttle effect.

Example 2:

the present embodiment provides a throttle gate valve, which has the following technical features in addition to the technical scheme of the above embodiment, and the sealing ring 315 further includes: the sealing ring comprises a sealing ring main body 3150, wherein a cavity is formed in the sealing ring main body 3150; a support 3151, the support 3151 being disposed in the cavity; the sealing protrusions 3152, the sealing protrusions 3152 are uniformly distributed on the surface of the sealing ring main body 3150.

Further, the support 3151 may be a material having a higher strength than the seal ring main body 3150, such as plastic.

In this embodiment, the structural strength of the sealing ring is improved through the arrangement of the supporting body 3151, the tightness between the insert 31 and the through hole 30 is ensured, the service life of the sealing ring is prolonged, and the sealing protrusions 3152 can form multiple seals, so that the tightness between the insert 31 and the through hole 30 is improved.

Example 3:

the present embodiment provides a throttle gate valve, which has the following technical features in addition to the technical scheme of the above embodiment, and further includes: a pressure valve 4, the pressure valve 4 being provided at an inlet of the flow passage 100 and communicating with the flow passage 100; the one-way valve 5 is arranged at the outlet of the flow channel and is communicated with the flow channel; a connection pipe 6, the connection pipe 6 being provided between the pressure valve 4 and the check valve 5 and communicating the pressure valve 4 and the check valve 5;

wherein the pressure valve 4 can be opened under the pressure of the water hammer.

In this embodiment, when the water hammer occurs, the pressure valve 4 can be opened under high pressure and fluid is poured into the connecting pipe 6, and finally poured into the other side of the valve plate 2 through the one-way valve 5 to reduce the influence of the water hammer on the gate valve, thereby prolonging the service life of the gate valve.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A throttle gate valve comprises a throttle valve body,

the valve comprises a valve body (1), wherein a flow channel (100) is arranged in the valve body (1), and a valve rod (101) is arranged on the valve body (1);

the valve plate (2) is connected with the valve rod (101) and can be driven by the valve rod (101) to move up and down, and the valve plate (2) can open or close the flow channel (100);

characterized by further comprising:

-a throttle mechanism (3), the throttle mechanism (3) being for controlling a fluid flow through the flow passage (100);

the middle part of the valve plate (2) is a throttling area (20), the lower part of the valve plate is an opening and closing area (21), the upper part of the valve plate is a connecting area (22), and the throttling mechanism (3) is arranged in the middle of the valve plate (2);

the throttle mechanism (3) further includes:

the through hole (30) is arranged in the middle of the valve plate (2) and penetrates through the valve plate (2) along the axial direction of the valve plate (2);

an insert (31), the insert (31) being inserted in the through hole (30);

wherein, a side of the through hole (30) facing the fluid inflow direction is provided with a stepped groove (32), and the insert (31) can be matched with the stepped groove (32) to resist fluid impact.

2. A throttle gate valve according to claim 1, characterized in that the insert (31) further comprises:

the annular insertion body (310), wherein a protruding part (311) is arranged on the annular insertion body (310), and an inner hole (312) which axially penetrates through the annular insertion body (310) is arranged on the annular insertion body (310);

a tungsten carbide liner (313), the tungsten carbide liner (313) being disposed on an inner wall of the inner bore (312);

a throttle ring (314), wherein the throttle ring (314) is arranged on the inner hole (312), and an orifice is arranged on the throttle ring (314);

the sealing ring (315) is arranged on the surface of the protruding part (311) and used for sealing the through hole (30);

wherein the throttle hole is arranged along the axial direction of the throttle ring (314).

3. A throttle gate valve according to claim 2, wherein the sealing ring (315) further comprises:

a sealing ring main body (3150), wherein a cavity is formed in the sealing ring main body (3150);

a support body (3151), the support body (3151) being disposed in the cavity;

and the sealing bulges (3152) are uniformly distributed on the surface of the sealing ring main body (3150).

4. A throttle gate valve as defined in claim 1, further comprising:

a pressure valve (4), the pressure valve (4) being arranged at the inlet of the flow channel (100) and being in communication with the flow channel (100);

a one-way valve (5) arranged at the outlet of the flow passage and communicated with the flow passage;

a connecting pipe (6), wherein the connecting pipe (6) is arranged between the pressure valve (4) and the one-way valve (5) and communicates the pressure valve (4) with the one-way valve (5);

wherein the pressure valve (4) can be opened under the pressure of the water hammer.