CN113090776A

CN113090776A - Telescopic gate valve

Info

Publication number: CN113090776A
Application number: CN202110339433.XA
Authority: CN
Inventors: 林哲; 陈晓枭; 王东瑞; 陈德胜; 朱祖超
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-07-09
Anticipated expiration: 2041-03-30
Also published as: CN113090776B

Abstract

The invention discloses a telescopic gate valve, which comprises a valve body, wherein a flow channel is arranged in the valve body, a square valve plate groove vertical to the flow channel is arranged in the middle of the valve body, the valve plate is arranged in the middle of the square valve plate groove and consists of a first valve plate, a second valve plate, a third valve plate and a fourth valve plate in a sliding connection mode, the valve plate is connected with a valve rod, the valve rod consists of a first valve rod, a second valve rod, a third valve rod and a fourth valve rod in a threaded connection mode, most of the valve rod is arranged in the valve body, the valve rod extending out of the valve body is positioned by a valve cover and can be externally connected with a driving mechanism to drive the valve rod to rotate, and the gate valve is; for the traditional gate valve, the volume occupied by the cavity of the valve body is only one fourth of that of the traditional gate valve, the space utilization rate is greatly improved, the gate valve is suitable for being installed in a limited space, meanwhile, due to the design of the telescopic valve plate, the consumption of materials can be reduced, the weight of the gate valve is also reduced, and favorable conditions are created for production and installation.

Description

Telescopic gate valve

Technical Field

The invention belongs to the technical field of gate valves, and particularly relates to a telescopic gate valve.

Background

The gate valve is a valve with a wide application range, the opening and closing part of the gate valve is a flashboard, the movement direction of the flashboard is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate has two sealing surfaces, and the two sealing surfaces of the gate valve in the most common mode form a wedge shape and a wedge angle which are different along with the parameters of the valve.

When the flashboard of present gate valve was in the full-open state, the flashboard can withdraw completely in the upper valve body, at this moment, can occupy great space, can cause the waste of material and the installation difficulty when the space is relatively limited, and these problems all can cause the increase of gate valve cost and the reduction of application range. Therefore, further research and development on the flexibility of the gate valve plate and the space occupied by the entire gate valve are required.

Disclosure of Invention

The invention aims to provide a telescopic gate valve to solve the problems that the conventional gate valve occupies a large space in the using process, wastes materials and is difficult to install when the space is relatively limited in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a telescopic gate valve comprises a valve body, a valve cover, a first valve plate, a second valve plate, a third valve plate, a fourth valve plate, a first valve rod, a second valve rod, a third valve rod and a fourth valve rod; the valve body is internally provided with a flow channel in a through manner, the middle part of the valve body is provided with a square valve plate groove which is vertical to the flow channel, the cross section of the square valve plate groove covers the flow channel, the square valve plate groove is provided with a containing cavity which is higher than the flow channel, the top part of the square valve plate groove is provided with an opening, the opening is sealed with the valve cover, the bottom part of the square valve plate groove is provided with the first valve plate, the front and back surfaces of the upper end and the lower end of the first valve plate are provided with outer edges, the first valve plate is sleeved with the second valve plate and can completely slide into the second valve plate, the bottom end of the inner wall of the second valve plate is provided with an inner edge, the first valve plate is blocked by the inner edge of the second valve plate when just sliding into the second valve plate, the front and back surfaces of the upper end and the lower end of the second valve plate are provided with outer edges, the second valve plate is sleeved with the third, the bottom end of the inner wall of the third valve plate is provided with an inner edge, the second valve plate is blocked by the inner edge of the third valve plate when just sliding into the third valve plate, the front and back surfaces of the upper end and the lower end of the third valve plate are provided with outer edges, the third valve plate is sleeved with the fourth valve plate, the third valve plate can completely slide into the fourth valve plate, the bottom end of the inner wall of the fourth valve plate is provided with an inner edge, the third valve plate is blocked by the inner edge of the fourth valve plate when just sliding into the fourth valve plate, the first valve plate, the second valve plate, the third valve plate and the fourth valve plate can seal the upper part and the transverse section in the square valve plate groove when completely unfolded, the center of the top of the first valve plate is provided with a threaded hole and is in threaded connection with the bottom end of the first valve rod, the first valve rod is of a hollow structure, the inner wall of the first valve rod is provided with threads, and the bottom end, the valve comprises a valve body, a first valve rod, a second valve rod, a third valve rod, a fourth valve rod, a bearing, a third valve rod, a fourth valve rod, a third valve rod and a bearing are sequentially arranged on the outer wall of the top of the second valve rod, the.

Preferably, the fourth valve plate is the same height as the square valve plate groove accommodating chamber.

Preferably, the fourth valve plate is in seamless sliding connection with the cavity of the square valve plate groove.

Preferably, the first valve plate, the second valve plate, the third valve plate and the fourth valve plate have the same height.

Preferably, the first valve plate, the second valve plate, the third valve plate and the fourth valve plate are all in seamless sliding connection.

Compared with the prior art, the invention has the beneficial effects that:

1. compared with the traditional gate valve, the size of the cavity of the valve body is greatly reduced by the telescopic valve plate, the valve plate is not a whole but is reasonably divided into four sections, and the valve plate can be sequentially put into the cavity of the valve body; the valve rod is also divided into four sections, and the required space is reduced to a certain extent except for the effect of driving the valve plate to contract.

2. The three valve plates and the three valve rods are all designed to be hollow, so that the material is saved.

3. The required volume of retractable gate valve reduces, when the material reduces, also can lighten valve weight, and convenient transportation and installation have also reduced the cost of each link to a certain extent, and at batch production's in-process, this advantage will be embodied more obviously.

4. The telescopic gate valve requires less installation space, and when the valve needs to be installed in a narrow space, the telescopic gate valve can provide a better choice than the traditional gate valve.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of a fully closed structure of the gate valve of the present invention;

FIG. 3 is a schematic view of a fully open configuration of the gate valve of the present invention;

FIG. 4 is a schematic view of the structure of a valve body, a flow passage and a square valve plate groove of the present invention;

FIG. 5 is an exploded view of the first, second, third and fourth valve plates of the present invention;

FIG. 6 is an exploded view of the first, second, third and fourth valve stems of the present invention;

FIG. 7 is a schematic top view of the valve body, bonnet, fourth stem, and bearing of the present invention;

fig. 8 is a schematic view of the structure of the valve cover and the bearing of the invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a first valve plate; 4. a second valve plate; 5. a third valve plate; 6. a fourth valve plate; 7. a first valve stem; 8. a second valve stem; 9. a third valve stem; 10. a fourth valve stem; 11. a flow channel; 12. a square valve plate groove; 13. and a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a technical solution: a telescopic gate valve comprises a valve body 1, a valve cover 2, a first valve plate 3, a second valve plate 4, a third valve plate 5, a fourth valve plate 6, a first valve rod 7, a second valve rod 8, a third valve rod 9 and a fourth valve rod 10; the valve comprises a valve body 1, a flow channel 11 is arranged in the valve body 1 in a through mode, a square valve plate groove 12 perpendicular to the flow channel 11 is arranged in the middle of the valve body 1, the flow channel 11 is covered by the cross section of the square valve plate groove 12, a containing cavity higher than the flow channel 11 is formed in the square valve plate groove 12, an opening is formed in the top of the square valve plate groove 12, the valve cover 2 is sealed at the opening, the first valve plate 3 is installed at the bottom in the square valve plate groove 12, outer edges are arranged on the front surface and the rear surface of the upper end and the lower end of the first valve plate 3, the second valve plate 4 is sleeved on the first valve plate 3, the first valve plate 3 can completely slide into the second valve plate 4, an inner edge is arranged at the bottom end of the inner wall of the second valve plate 4, the first valve plate 3 is blocked by the inner edge of the second valve plate 4 when just sliding into the second valve plate 4, outer edges are, the third valve plate 5 is sleeved on the second valve plate 4, the second valve plate 4 can completely slide into the third valve plate 5, the bottom end of the inner wall of the third valve plate 5 is provided with an inner edge, the second valve plate 4 is blocked by the inner edge of the third valve plate 5 when just sliding into the third valve plate 5, the front and back surfaces of the upper end and the lower end of the third valve plate 5 are provided with outer edges, the fourth valve plate 6 is sleeved on the third valve plate 5, the third valve plate 5 can completely slide into the fourth valve plate 6, the bottom end of the inner wall of the fourth valve plate 6 is provided with an inner edge, the third valve plate 5 is blocked by the inner edge of the fourth valve plate 6 when just sliding into the fourth valve plate 6, the first valve plate 3, the second valve plate 4, the third valve plate 5 and the fourth valve plate 6 are completely unfolded to seal the upper part and the transverse section in the square valve plate groove 12, the center threaded hole in the top of the first valve plate 3 is provided with a thread and connected with the bottom end of the first valve rod 7, first valve rod 7 is hollow structure and inner wall and is equipped with the screw thread, 7 internal thread connection of first valve rod 8 bottom of second valve rod, 8 top outer walls of second valve rod are equipped with screw thread and threaded connection third valve rod 9, first valve rod 7 with 9 equal size of third valve rod, 9 top outer walls of third valve rod are equipped with screw thread and threaded connection fourth valve rod 10, first valve rod 7 second valve rod 8 third valve rod 9 move with screw drive's mode between the fourth valve rod 10, bearing 13 is equipped with at valve gap 2 top, bearing 13 fixed cover is in the outer wall of fourth valve rod 10.

In the embodiment, the valve plate and the valve rod are designed to be telescopic, the valve rod extending out of the valve body 1 is externally connected with a driving mechanism to drive the valve rod to rotate, and the valve rod is telescopic to drive the gate valve to be closed and opened; for the traditional gate valve, the volume occupied by the cavity of the valve body 1 is only one fourth of that of the traditional gate valve, the space utilization rate is greatly improved, the gate valve is suitable for being installed in a limited space, meanwhile, due to the design of the telescopic valve plate, the consumption of materials can be reduced, the weight of the gate valve is also reduced, and favorable conditions are created for production and installation.

Specifically, the fourth valve plate 6 and the square valve plate groove 12 have the same accommodating cavity height.

In this embodiment, when all the valve rods are retracted to the right position, the first valve plate 3, the second valve plate 4, the third valve plate 5 and the fourth valve plate 6 are just retracted completely into the accommodating cavity of the valve body 1, so that the space is further optimized.

Specifically, the fourth valve plate 6 is in seamless sliding connection with the cavity of the square valve plate groove 12.

In the present embodiment, the upper portion of the square valve plate groove 12 is sealed by the fourth valve plate 6.

Specifically, the first valve plate 3, the second valve plate 4, the third valve plate 5, and the fourth valve plate 6 have the same height.

In this embodiment, can overlap completely when making the valve plate shrink, further reduce valve plate occupation space.

Specifically, the first valve plate 3, the second valve plate 4, the third valve plate 5 and the fourth valve plate 6 are all in seamless sliding connection.

In the present embodiment, fluid is prevented from leaking out from the gaps between the first valve plate 3, the second valve plate 4, the third valve plate 5, and the fourth valve plate 6.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

The working principle is as follows: with the external motor of fourth valve rod 10, when first valve plate 3, second valve plate 4, third valve plate 5, fourth valve plate 6 expand completely, the gate valve is in the state of closing entirely, when needing to open, drives fourth valve rod 10 through the motor and rotates, and first valve plate 3 begins to contract towards the direction of first valve rod 7. At this time, the buckling position of the upper end of the first valve plate 3 and the lower end of the second valve plate 4 begins to separate, when the first valve plate 3 is completely contracted into the second valve plate 4, the lower end of the second valve plate 4 is buckled with the lower end of the first valve plate 3, and the first valve rod 7 completely enters the threaded hole of the first valve plate 3, but the position of the first valve rod relative to other valve rods is not changed; at the moment, the valve rod continues to contract, the first valve plate 3 and the second valve plate 4 are also driven to continue to contract, when the second valve rod 8 contracts into the whole first valve rod 7, the lower ends of the first valve plate 3 and the second valve plate 4 are buckled with the third valve plate 5 and completely contract into the third valve plate 5, and the lower ends of the three valve plates are on the same plane; with the continuous extension and contraction of the valve rod, the first valve plate 3, the second valve plate 4 and the third valve plate 5 are driven to contract towards the inside of the fourth valve plate 6, when the second valve rod 8 contracts into the whole third valve rod 9, the first valve plate 3, the second valve plate 4 and the third valve plate 5 completely contract into the fourth valve plate 6, and the lower ends of the four valve plates are on the same plane; at this moment, first valve rod 7, second valve rod 8, third valve rod 9 continues to move in the fourth valve rod 10, when all valve rods shrink when targetting in place, first valve plate 3, second valve plate 4, third valve plate 5, fourth valve plate 6 will shrink completely to the intracavity that holds of valve body 1, and the lower extreme of four valve plates is on the coplanar, the gate valve is in full open state this moment, to traditional gate valve, the shared volume of 1 cavity of valve body only has the fourth of traditional gate valve, space utilization has been improved greatly, be fit for installing this type of gate valve in the limited department of space, telescopic valve plate design can reduce the consumption of material simultaneously, the weight of this gate valve has also been alleviateed, favorable conditions has all been created for production and installation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a retractable gate valve which characterized in that: the valve comprises a valve body (1), a valve cover (2), a first valve plate (3), a second valve plate (4), a third valve plate (5), a fourth valve plate (6), a first valve rod (7), a second valve rod (8), a third valve rod (9) and a fourth valve rod (10); the valve body (1) is internally provided with a flow channel (11) in a through mode, the middle of the valve body (1) is provided with a square valve plate groove (12) perpendicular to the flow channel (11), the cross section of the square valve plate groove (12) covers the flow channel (11), the square valve plate groove (12) is provided with a containing cavity higher than the flow channel (11), the top of the square valve plate groove (12) is provided with an opening, the opening is sealed with the valve cover (2), the bottom of the square valve plate groove (12) is provided with the first valve plate (3), the front and back surfaces of the upper end and the lower end of the first valve plate (3) are respectively provided with an outer edge, the first valve plate (3) is sleeved with the second valve plate (4) and the first valve plate (3) can completely slide into the second valve plate (4), the bottom end of the inner wall of the second valve plate (4) is provided with an inner edge, and the first valve plate (3) just slides into the second valve plate (4) and is blocked by the inner edge of the second valve plate (4, the front and back of both ends all are equipped with outer edge about second valve plate (4), the cover has on second valve plate (4) third valve plate (5) just second valve plate (4) can slide into completely in third valve plate (5), third valve plate (5) inner wall bottom be equipped with interior edge just second valve plate (4) just when sliding into in third valve plate (5) by interior edge blockking in third valve plate (5), the front and back at both ends all are equipped with outer edge about third valve plate (5), the cover has on third valve plate (5) fourth valve plate (6) just third valve plate (5) can slide into completely in fourth valve plate (6), fourth valve plate (6) inner wall bottom be equipped with interior edge just third valve plate (5) just slide into in fourth valve plate (6) by interior edge blockking in fourth valve plate (6), first valve plate (3), Second valve plate (4) third valve plate (5) fourth valve plate (6) expand completely can with upper portion and transverse section are sealed in square valve plate groove (12), first valve plate (3) top central authorities threaded hole and with first valve rod (7) bottom threaded connection, first valve rod (7) are hollow structure and inner wall are equipped with the screw thread, first valve rod (7) internal thread connection second valve rod (8) bottom, second valve rod (8) top outer wall is equipped with screw thread and threaded connection third valve rod (9), first valve rod (7) with third valve rod (9) size is all the same, third valve rod (9) top outer wall is equipped with screw thread and threaded connection fourth valve rod (10), first valve rod (7) second valve rod (8) third valve rod (9), The fourth valve rod (10) moves in a threaded transmission mode, a bearing (13) is installed at the top of the valve cover (2), and the bearing (13) is fixedly sleeved on the outer wall of the fourth valve rod (10).

2. A retractable gate valve as claimed in claim 1, wherein: the fourth valve plate (6) and the square valve plate groove (12) are the same in accommodating cavity height.

3. A retractable gate valve as claimed in claim 1, wherein: the fourth valve plate (6) is in seamless sliding connection with the cavity of the square valve plate groove (12).

4. A retractable gate valve as claimed in claim 1, wherein: the first valve plate (3), the second valve plate (4), the third valve plate (5) and the fourth valve plate (6) are identical in height.

5. A retractable gate valve as claimed in claim 1, wherein: the first valve plate (3), the second valve plate (4), the third valve plate (5) and the fourth valve plate (6) are connected in a seamless sliding mode.