CN215059629U

CN215059629U - Improved gate valve

Info

Publication number: CN215059629U
Application number: CN202120919523.1U
Authority: CN
Inventors: 吕荣贵; 林英廉
Original assignee: Fujian Zhibang Valve Co ltd
Current assignee: Fujian Zhibang Valve Co ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-12-07
Anticipated expiration: 2031-04-29

Abstract

The utility model provides an improved gate valve with simple structure, abrasion resistance and good sealing performance, which comprises a gate valve body, a valve cover arranged above the gate valve body, a threaded hole arranged on the valve cover, a water inlet channel and a water outlet channel which are radially arranged along the gate valve body, and a valve plate arranged between the water inlet channel and the water outlet channel and used for controlling the opening and closing of fluid, wherein a valve rod is arranged above the valve plate and positioned inside the gate valve body, a first channel is arranged above the valve rod, the lower end part of the valve rod is connected with the valve plate through a linkage device, the upper end part of the valve rod penetrates out of the first channel, a first sealing device is arranged in the first channel of the gate valve body, a first sealing block for preventing the abrasion of the valve plate is arranged in a second channel of the gate valve body, a first groove is arranged at the bottom of the gate valve body, and the valve plate is arranged in the first groove, and a first anti-abrasion device for preventing the valve plate from being abraded is arranged between the valve plate and the first groove.

Description

Improved gate valve

Technical Field

The utility model relates to the technical field of valves, a special design improved generation gate valve.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, so that the purpose of opening and closing the gate valve is achieved, the gate valve can only be opened and closed completely and cannot be adjusted and throttled, the shutter is provided with two sealing surfaces, and the two sealing surfaces of the most common mode gate valve form a wedge shape and a wedge angle which are different along with the parameters of the gate valve. However, after the valve plate of the gate valve is used for a long time, the valve plate is easy to damage, and the sealing effect is further influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide a simple structure, stand wear and tear, the good improved generation gate valve of leakproofness.

In order to achieve the above object, the technical solution of the present invention is to provide an improved gate valve, which comprises a gate valve body, a valve cover disposed above the gate valve body, a threaded hole disposed on the valve cover, a water inlet channel and a water outlet channel radially disposed along the gate valve body, and a valve plate disposed between the water inlet channel and the water outlet channel for controlling opening and closing of fluid, wherein a valve rod is disposed above the valve plate and inside the gate valve body, a first channel is disposed above the valve rod, a lower end of the valve rod is connected to the valve plate via a linkage device, an upper end of the valve rod penetrates out of the first channel, a first sealing device is disposed inside the first channel, a first sealing block for preventing abrasion of the valve plate is disposed inside the second channel, a first groove is disposed at the bottom of the gate valve body, and the valve plate is disposed in the first groove, and a first anti-abrasion device for preventing the valve plate from being abraded is arranged between the valve plate and the first groove.

The further improvement is that: the first abrasion prevention device is: the opening part of the first groove is provided with an arc-shaped chamfer, the bottom of the first groove is provided with an elastic first anti-abrasion block, and the first anti-abrasion block can be resisted with the valve plate.

The further improvement is that: still include the connecting block, set up on the gate valve body with the clearance passageway that first recess is linked together, first abrasionproof decreases the piece and fixes locating on the connecting block, the diameter that first abrasionproof decreases the piece is greater than first recess, the diameter that first abrasionproof decreases the piece is less than the connecting block, the connecting block passes through connecting device and locates in the clearance passageway, be equipped with second sealing device between connecting block and the gate valve body.

The further improvement is that: the connecting device is as follows: the connecting block is in threaded connection with the gate valve body.

The further improvement is that: and a rotating hand wheel is fixedly arranged on the connecting block.

The further improvement is that: and a limiting device for preventing the valve plate from being excessively pressed down is arranged between the valve rod and the first gate valve body.

The further improvement is that: the limiting device comprises a limiting disc, the limiting disc is fixedly sleeved on the valve rod and is located in the first channel, a limiting block for preventing the valve rod from moving downwards is fixedly arranged in the first channel of the gate valve body, and the limiting disc can be abutted to the limiting block.

The further improvement is that: and the valve plate is fixedly provided with a wear-resistant layer.

The further improvement is that: the gate valve body is provided with an observation port.

The further improvement is that: the gate valve body is located fixed overhead gage and the lower baffle of being equipped with of inhalant canal, overhead gage and lower baffle setting of staggering.

The further improvement is that: the linkage device comprises a fixed block, the fixed block is fixedly arranged at the upper end part of the valve plate, the fixed block is abutted to the sealing block, a second groove is formed in the fixed block, the valve rod penetrates through the second groove, a linkage block is fixedly arranged in the second groove and can be abutted to the inner wall of the upper end part of the second groove.

The further improvement is that: the valve rod is fixedly provided with a rotating wheel positioned outside the gate valve body.

The utility model has the advantages and the beneficial effects that:

1. simple structure, first sealed piece not only can improve the leakproofness of gate valve body, and can avoid the valve plate upwards slide in getting into first passageway in with the hard friction of the inner wall of gate valve body, reduce the wearing and tearing of valve plate, improve valve plate life, the valve plate can directly penetrate in the first recess and resist with first abrasionproof decreases the piece mutually, the leakproofness of gate valve has been improved, and arc chamfer and first abrasionproof decreases the piece and can reduce the wearing and tearing with the gate valve body when tip penetrates first recess under the valve plate, further improvement valve plate life, further improved sealed effect.

2. The valve plate is driven to move up and down through the linkage block, and compared with the traditional valve rod and valve plate which are driven to lift through threads, the valve plate cannot be damaged, and the service life of the valve plate is prolonged.

3. The clearance passageway cooperates with the connecting block, can avoid the impurity in the fluid passage to adhere to in first recess, block up first recess to produce wearing and tearing to the tip under the valve plate, further improvement the valve plate to the sealed effect of gate valve and the wearing and tearing that reduce the valve plate.

4. Stop device can avoid the valve rod to excessively push down the valve plate when downward, causes the damage to the valve plate, has improved the life of valve plate.

Drawings

Fig. 1 is the utility model discloses an improved generation gate valve part structure sketch map of cutting open.

Fig. 2 is an enlarged schematic structural diagram of embodiment a of the present invention.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1-2, an improved gate valve comprises a gate valve body 1, a valve cover 2 disposed above the gate valve body 1, a threaded hole 2 disposed on the valve cover 2, a water inlet channel 3 and a water outlet channel 4 radially disposed along the gate valve body 1, and a valve plate 5 disposed between the water inlet channel 3 and the water outlet channel 4 for controlling opening and closing of fluid, wherein a valve rod 6 is disposed above the valve plate 5 and inside the gate valve body 1, a first channel is disposed above the valve rod 6, a fixing block 18 is fixedly disposed at an upper end of the valve plate 5, a second groove 19 is disposed on the fixing block 18, a lower end of the valve rod 6 penetrates through the second groove 19, a linkage block 20 is fixedly disposed inside the second groove 19, the linkage block 20 can abut against an inner wall of an upper end of the second groove 19, and an upper end of the valve rod 6 penetrates through the first channel, the gate valve body 1 is positioned in the first channel and is provided with a first sealing ring 7 for preventing fluid leakage, the gate valve body 1 is positioned in the second channel and is provided with a first sealing block 12 for preventing the valve plate 5 from being worn, the fixed block 18 is opposite to the first sealing block 12, the first sealing block 12 can not only improve the sealing performance of the gate valve body 1, but also can avoid hard friction with the inner wall of the gate valve body 1 when the valve plate 5 slides upwards and enters the first channel, reduce the abrasion of the valve plate 5, prolong the service life of the valve plate 5, a first groove 21 is formed at the bottom of the gate valve body 1, the valve plate 5 is arranged in the first groove 21 in a penetrating way, an arc-shaped chamfer 22 is formed at the opening of the first groove 21, an elastic first anti-abrasion block 23 is arranged at the bottom of the first groove 21, and the first anti-abrasion block 23 can resist against the valve plate 5. When the gate valve is used, the valve plate 5 can directly penetrate into the first groove 21 to be resisted with the first anti-abrasion block 23, the sealing performance of the gate valve is improved, and the arc-shaped chamfer 22 and the first anti-abrasion block 23 can reduce abrasion between the lower end part of the valve plate 5 and the gate valve body 1 when penetrating into the first groove 21.

In order to avoid the impurity in the fluid passage to adhere to in first recess 21, block up first recess 21 to produce wearing and tearing to valve plate 5 lower tip, still include connecting block 26, seted up on gate valve body 1 with the clearance passageway that first recess 21 is linked together, first abrasionproof decreases piece 23 and fixes and locate on the connecting block 26, connecting block 26 locates through threaded connection in the clearance passageway, the diameter of first abrasionproof decreases piece 23 is greater than first recess 21, the diameter of first abrasionproof decreases piece 23 is less than connecting block 26, and first abrasionproof decreases piece 23 diameter is less than connecting block 26 and avoids being destroyed by the screw thread in the clearance passageway, be equipped with between connecting block 26 and the gate valve body 1 and prevent that the fluid from leaking second sealing washer 25.

In order to excessively press the valve plate 5 downwards when the valve rod 6 is downwards and damage the valve plate 5, a limiting device for preventing the valve plate 5 from being excessively pressed downwards is arranged between the valve rod 6 and the first gate valve body 1, the limiting device comprises a limiting disc 10, the limiting disc 10 is fixedly sleeved on the valve rod 6, the limiting disc 10 is located in the first channel, a limiting block 11 for preventing the valve rod 6 from downwards is fixedly arranged in the first channel of the gate valve body 1, and the limiting disc 10 can be abutted against the limiting block 11.

In order to further improve the wear resistance of the valve plate 5, a wear resistant layer 17 is fixedly arranged on the valve plate 5.

In order to facilitate the cleaning of the impurities attached to the first groove 21 by the worker at any time, the gate valve body 1 is provided with an observation port 14.

In order to prevent the damage of the water hammer to the valve plate 5, the gate valve body 1 is located the fixed upper baffle 15 and the lower baffle 16 that are arranged on the water inlet channel 3, and the upper baffle 15 and the lower baffle 16 are staggered.

In order to facilitate the rotation of the valve rod 6, a rotating wheel 9 is fixedly arranged on the valve rod 6 outside the gate valve body 1.

In order to rotate the connecting block 26 conveniently, a rotating hand wheel 27 is fixedly arranged on the connecting block 26.

Having shown and described the basic principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the present invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but is susceptible to various changes and modifications without departing from the spirit and scope of the invention, all of which are intended to be covered by the appended claims and their equivalents.

Claims

1. The utility model provides an improved generation gate valve, includes the gate valve body, its characterized in that: a valve cover arranged above the gate valve body, a threaded hole arranged on the valve cover, a water inlet channel and a water outlet channel which are arranged along the radial direction of the gate valve body, and a valve plate arranged between the water inlet channel and the water outlet channel and used for controlling the opening and closing of fluid, a valve rod is arranged above the valve plate and inside the gate valve body, a first channel is arranged above the valve rod, the lower end part of the valve rod is connected with the valve plate through a linkage device, the upper end part of the valve rod penetrates out of the first channel, the gate valve body is positioned in the first channel and is internally provided with a first sealing device, the gate valve body is positioned in the second channel and is internally provided with a first sealing block for preventing the valve plate from being abraded, a first groove is formed in the bottom of the gate valve body, the valve plate penetrates through the first groove, and a first abrasion-proof device for preventing the valve plate from being abraded is arranged between the valve plate and the first groove.

2. An improved gate valve as defined in claim 1, wherein: the first abrasion prevention device is: the opening part of the first groove is provided with an arc-shaped chamfer, the bottom of the first groove is provided with an elastic first anti-abrasion block, and the first anti-abrasion block can be resisted with the valve plate.

3. An improved gate valve as defined in claim 2, wherein: still include the connecting block, set up on the gate valve body with the clearance passageway that first recess is linked together, first abrasionproof decreases the piece and fixes locating on the connecting block, the diameter that first abrasionproof decreases the piece is greater than first recess, the diameter that first abrasionproof decreases the piece is less than the connecting block, the connecting block passes through connecting device and locates in the clearance passageway, be equipped with second sealing device between connecting block and the gate valve body.

4. An improved gate valve as defined in claim 3, wherein: the connecting device is as follows: the connecting block is in threaded connection with the gate valve body.

5. An improved gate valve as defined in claim 4, wherein: and a rotating hand wheel is fixedly arranged on the connecting block.

6. An improved gate valve as defined in claim 1, wherein: and a limiting device for preventing the valve plate from being excessively pressed down is arranged between the valve rod and the first gate valve body.

7. An improved gate valve as defined in claim 6, wherein: the limiting device comprises a limiting disc, the limiting disc is fixedly sleeved on the valve rod and is located in the first channel, a limiting block for preventing the valve rod from moving downwards is fixedly arranged in the first channel of the gate valve body, and the limiting disc can be abutted to the limiting block.

8. An improved gate valve as defined in claim 1, wherein: and the valve plate is fixedly provided with a wear-resistant layer.

9. An improved gate valve as defined in claim 1, wherein: the gate valve body is provided with an observation port.

10. An improved gate valve as defined in claim 1, wherein: the gate valve body is located fixed overhead gage and the lower baffle of being equipped with of inhalant canal, overhead gage and lower baffle setting of staggering.

11. An improved gate valve as defined in claim 1, wherein: the linkage device comprises a fixed block, the fixed block is fixedly arranged at the upper end part of the valve plate, the fixed block is abutted to the sealing block, a second groove is formed in the fixed block, the valve rod penetrates through the second groove, a linkage block is fixedly arranged in the second groove and positioned in the second groove, and the linkage block can be abutted to the inner wall of the upper end part of the second groove.

12. An improved gate valve as defined in claim 1, wherein: the valve rod is fixedly provided with a rotating wheel positioned outside the gate valve body.