CN220910632U - Double-flashboard gate valve - Google Patents

Abstract

The application discloses a double-flashboard gate valve, and belongs to the technical field of gate valves. The valve rod is in threaded connection with the valve body, the valve rod is provided with a lock platform, a flashboard mechanism is slidably mounted on the valve body, the end part of the valve rod is rotationally connected with the flashboard mechanism, the check mechanism is mounted on the valve body and comprises a mounting platform, the mounting platform is fixed on the valve body, a mounting cavity is formed in the mounting platform, the check platform is hinged in the mounting cavity, the check platform is used for limiting the valve rod in cooperation with the lock platform, a spring is fixed between the mounting platform and the check platform and used for limiting the valve rod under the cooperation of the check platform and the lock platform, and the valve rod is limited by being provided with the check mechanism, so that the effect of fixing the position of the valve rod is achieved. The double-flashboard gate valve solves the problem that when fluid impacts a flashboard for a long time, the flashboard drives a valve rod to swing and move upwards.

Description

Double-flashboard gate valve

Technical Field

The application relates to the technical field of gate valves, in particular to a double-flashboard gate valve.

Background

The double-flashboard gate valve is suitable for closed-circuit equipment on pipelines with water and sewage as mediums, and is widely suitable for industries such as petroleum, chemical industry, pharmacy, electric power and the like;

The double-flashboard gate valve is a common valve type and consists of a valve body, a driving mechanism, a valve rod, a valve seat and two groups of flashboards, wherein the driving mechanism, the valve rod, the valve seat and the two groups of flashboards are arranged in the valve body, the two groups of flashboards are generally connected symmetrically through an axial lead, the two groups of flashboards are arranged on two sides of the valve seat, the valve seat is connected with the valve rod, the valve rod is arranged at the output end of the driving mechanism, and the driving mechanism drives the valve rod to move so that the flashboards do reciprocating motion to control the opening and closing of the valve body;

In the use of the double-flashboard gate valve, when the driving mechanism drives the valve rod to move upwards, the valve rod drives the two groups of flashboards to move towards the top of the valve body, so that a channel is formed at the joint of the valve body and the pipeline, fluid can freely pass through the channel, the channel is in an open state, when the driving mechanism drives the valve rod to move downwards, the valve rod drives the two groups of flashboards to move towards the bottom of the valve body, so that the two groups of flashboards cut off and close the channel formed at the joint of the valve body and the pipeline, and the channel is in a closed state;

However, in the long-time use of the double-gate valve, since the gate is closed for a long time, the gate on one side is in contact with the fluid for a long time, and the fluid impacts the gate for a long time, so that the gate receives an upward impact force and drives the valve rod to shake, under the action of the long-time shake of the valve rod, the valve rod is easy to move upwards and drives the valve plate to move, thereby causing the gate to leak, so that it is necessary to provide the double-gate valve to solve the above problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the inventive concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems existing in the prior art, the present application aims to solve the problems: the double-flashboard gate valve solves the problem that when fluid impacts a flashboard for a long time, the flashboard drives a valve rod to swing and move upwards.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a double-flashboard gate valve, includes the valve body, the valve rod, this valve rod threaded connection in the valve body, be provided with the lock platform on the valve rod, flashboard mechanism, this flashboard mechanism slidable mounting in the valve body, the tip of valve rod with rotate between the flashboard mechanism and be connected, check mechanism, this check mechanism install in on the valve body, check mechanism includes the mount table, this mount table is fixed in on the valve body, the mount cavity has been seted up in the mount table, the check platform, this check platform hinge in the mount cavity, the check platform is used for cooperating with the lock platform to the valve rod is spacing, the spring, this spring is fixed in the mount table with between the check platform.

Further, the check mechanism further comprises a shaft rod, the shaft rod penetrates through the mounting table and is fixed with the mounting table, the shaft rod penetrates through the check table and is rotationally connected with the check table, and the check table is suitable for rotating on the mounting table.

Further, a first inclined plane is arranged below the lock platform, and a second inclined plane corresponding to the first inclined plane is arranged on the check platform.

Further, the check mechanism is provided with a fixing part, the fixing part comprises a lock catch and a hasp, the lock catch is fixed at the top of the check table, the hasp is fixed at the top of the installation table, and the hasp is suitable for being hung on the lock catch.

Further, the valve body comprises fixed station, holding platform and connecting pipe from top to bottom, it is provided with the chamber of holding to hold in the platform, hold the chamber with the inner chamber of connecting pipe is linked together, the connecting pipe is used for being connected with fluid delivery pipeline.

Further, the gate plate mechanism is composed of two groups of gate plates and valve seats arranged between the two groups of gate plates, the two groups of gate plates are mutually symmetrical, and the gate plates are used for closing or opening the connecting pipe.

Further, sliding grooves corresponding to the valve seats are formed in two sides of the bottom of the connecting pipe, and the valve seats are suitable for driving the two groups of flashboards to slide up and down in the connecting pipe.

Further, a handle is arranged at the top of the valve rod, the handle is fixedly connected with the valve rod, and the handle is convenient to rotate the valve rod.

The beneficial effects of the application are as follows: according to the double-flashboard gate valve provided by the application, the check mechanism is arranged, the valve rod is limited under the cooperation of the check table and the lock table, the effect of fixing the position of the valve rod is realized, and the problem that the flashboard drives the valve rod to shake and move upwards under the condition that fluid impacts the flashboard for a long time is solved.

In addition to the objects, features and advantages described above, the present application has other objects, features and advantages. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

FIG. 1 is an overall schematic of a dual gate valve of the present application;

FIG. 2 is an enlarged schematic view of FIG. 1 at A;

FIG. 3 is a schematic view of an explosion mechanism of the valve body of FIG. 1;

FIG. 4 is an enlarged schematic view at B in FIG. 3;

FIG. 5 is a schematic view of the stop-back mechanism of FIG. 4 in semi-section;

Wherein, each reference sign in the figure:

1. A valve body; 11. a connecting pipe; 111. a chute; 12. a receiving table; 13. a fixed table; 2. a driving mechanism; 21. a valve stem; 211. locking a platform; 212. a first inclined surface; 22. a handle; 3. a non-return mechanism; 31. a mounting table; 311. a notch; 32. a spring; 33. a check table; 331. a second inclined surface; 34. a shaft lever; 35. locking; 36. a hasp; 4. a flashboard mechanism.

Detailed Description

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.

As shown in fig. 1 and 3, the present application provides a dual-gate valve, comprising a valve body 1 and a driving mechanism 2 installed in the valve body 1, wherein the valve body 1 is composed of a fixed table 13, a containing table 12 and a connecting pipe 11 from top to bottom, all the components of the valve body 1 are in flange connection, a containing cavity is arranged in the containing table 12, the containing cavity is communicated with an inner cavity of the connecting pipe 11, and the connecting pipe 11 is used for connecting with a fluid conveying pipeline;

The driving mechanism 2 comprises a valve rod 21 and a handle 22 arranged at one end of the valve rod 21, the valve rod 21 is in threaded connection with the fixed table 13, and the handle 22 is convenient for rotating the valve rod 21;

The other end of the valve rod 21 is connected with a gate plate mechanism 4, the gate plate mechanism 4 is used for opening or closing the connecting pipe 11, the gate plate mechanism 4 consists of two groups of gate plates and valve seats arranged between the two groups of gate plates, the two groups of gate plates are mutually symmetrical, the gate plate mechanism 4 is in the prior art, and specific reference is made to the prior art, and redundant description is not made here;

simultaneously, sliding grooves 111 (shown in fig. 3) corresponding to valve seats are arranged on two sides in the connecting pipe 11, so that the valve seats are suitable for driving two groups of shutters to move up and down in the inner cavity of the connecting pipe 11, the end part of the valve rod 21 is connected with the valve seats through bearings, and when the valve rod 21 rotates, the end part of the valve rod 21 moves, so that the shutter mechanism 4 is driven to reciprocate in the inner cavity of the connecting pipe 11 to close or open the connecting pipe 11;

The above is a main operation component of the double-gate valve, and the double-gate valve is in the prior art, please refer to the prior art specifically, and is not limited in this way, and meanwhile, the driving mechanism 2 drives the gate mechanism 4 to move, wherein the driving mechanism 2 may also be a worm transmission mechanism, or may also be an electric, pneumatic or hydraulic driving executing mechanism, and is not limited in this way;

Two groups of check mechanisms 3 are arranged on the fixed table 13 and positioned on two sides of the valve rod 21, the check mechanisms 3 are fixedly arranged on the fixed table 13, and the check mechanisms 3 are used for locking the valve rod 21 when the valve rod 21 drives the flashboard to be in a closed state so as to prevent the valve rod 21 from being upwards moved by upward impact force due to a certain clearance easily generated between the two groups of flashboard under long-time impact of fluid;

As shown in fig. 2 and fig. 4-5, a lock stand 211 is provided on the valve rod 21, the check mechanism 3 includes a mounting stand 31 and a check stand 33 provided on the mounting stand 31, a mounting cavity is provided on the mounting stand 31, and the check stand 33 is provided in the mounting cavity;

A shaft lever 34 is fixedly penetrated in the mounting cavity, the shaft lever 34 penetrates through the check table 33, and the check table 33 is in rotary connection with the shaft lever 34, so that the check table 33 is suitable for rotating in the mounting table 31, a notch 311 is formed in the bottom of the mounting cavity, and the notch 311 corresponds to the bottom of the check table 33, so that the check table 33 is abducted;

Meanwhile, a spring 32 is fixedly connected between the check table 33 and the mounting table 31, and when the check table 33 approaches to the inner side of the mounting table 31, the check table 33 compresses the spring 32, so that the spring 32 has elastic force to the check table 33, and the check table 33 is suitable for returning to the initial position;

A first inclined surface 212 is arranged on the lower surface of the lock base 211, and a second inclined surface 331 which is matched with the first inclined surface 212 in the direction is arranged at one side end part of the check base 33;

When the valve rod 21 rotates and drives the flashboard mechanism 4 to close the connecting pipe 11 (as shown in fig. 2), the lock platform 211 is driven to move downwards, so that a first inclined surface 212 on the lock platform 211 contacts with a second inclined surface 331 on the check platform 33, and under the drive of the lock platform 211, the first inclined surface 212 starts to rotate the upper end of the check platform 33 towards the inner side of the mounting platform 31, when the lock platform 211 moves to the lower part of the check platform 33, under the elastic force of the spring 32 on the check platform 33, the check platform 33 returns to the original position and limits the lock platform 211, thereby realizing the purpose of self-locking of the valve rod 21 by the check mechanism 3 and limiting the position of the valve rod 21;

In summary, by arranging the check mechanism 3 and limiting the valve rod 21 under the cooperation of the check table 33 and the lock table 211, the effect of fixing the position of the valve rod 21 is achieved, and the problem that the valve rod 21 is driven by the flashboard to shake and move upwards under the condition that fluid impacts the flashboard for a long time is solved;

In order to enable the lock base 211 to move upwards to open the shutter mechanism 4 after being locked by the check mechanism 3, the check mechanism 3 further comprises a fixing part, wherein the fixing part is a snap lock in the prior art, the fixing part comprises a lock catch 35 and a lock catch 36, the lock catch 35 is fixed on the top of the check base 33, the lock catch 36 is fixed on the top of the mounting base 31, the lock catch 36 is suitable for being hung on the lock catch 35, so that the check base 33 is always in a state of being close to the mounting base 31 (as shown in fig. 4), and the valve rod 21 can drive the lock base 211 to move upwards without obstruction so as to open the shutter mechanism 4.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. A dual gate valve comprising:

A valve body (1);

A valve rod (21), wherein the valve rod (21) is in threaded connection with the valve body (1), and a lock table (211) is arranged on the valve rod (21);

A shutter mechanism (4), wherein the shutter mechanism (4) is slidably mounted on the valve body (1), and the end part of the valve rod (21) is rotatably connected with the shutter mechanism (4);

Check mechanism (3), this check mechanism (3) install in on valve body (1), its characterized in that: the non-return mechanism (3) comprises:

the mounting table (31), the mounting table (31) is fixed on the valve body (1), and a mounting cavity is formed in the mounting table (31);

a check table (33), wherein the check table (33) is hinged in the mounting cavity, and the check table (33) is used for limiting the valve rod (21) in cooperation with a lock table (211);

And a spring (32), wherein the spring (32) is fixed between the mounting table (31) and the check table (33).

2. A dual gate valve as defined in claim 1, wherein: the check mechanism (3) further comprises a shaft lever (34), the shaft lever (34) penetrates through the mounting table (31) and is fixed with the mounting table (31), the shaft lever (34) penetrates through the check table (33) and is rotationally connected with the check table (33), and the check table (33) is suitable for rotating on the mounting table (31).

3. A dual gate valve as defined in claim 1, wherein: a first inclined surface (212) is arranged below the lock table (211), and a second inclined surface (331) corresponding to the first inclined surface (212) is arranged on the check table (33).

4. A dual gate valve as defined in claim 2, wherein: the check mechanism (3) is provided with a fixing part, the fixing part comprises a lock catch (35) and a hasp (36), the lock catch (35) is fixed at the top of the check table (33), the hasp (36) is fixed at the top of the mounting table (31), and the hasp (36) is suitable for hanging the bolt on the lock catch (35).

5. A dual gate valve as defined in claim 1, wherein: the valve body (1) comprises a fixed table (13), a containing table (12) and a connecting pipe (11) from top to bottom, a containing cavity is arranged in the containing table (12), the containing cavity is communicated with an inner cavity of the connecting pipe (11), and the connecting pipe (11) is used for being connected with a fluid conveying pipeline.

6. The dual gate valve of claim 5, wherein: the flashboard mechanism (4) consists of two groups of flashboard and valve seats arranged between the two groups of flashboard, the two groups of flashboard are symmetrical to each other, and the flashboard is used for closing or opening the connecting pipe (11).

7. The dual gate valve of claim 6, wherein: two sides of the bottom of the connecting pipe (11) are provided with sliding grooves (111) corresponding to the valve seats, and the valve seats are suitable for driving two groups of flashboards to slide up and down in the connecting pipe (11).

8. A dual gate valve as defined in claim 1, wherein: the top of valve rod (21) is provided with handle (22), handle (22) with fixed connection between valve rod (21), handle (22) are in order to rotate valve rod (21).