CN219472770U - Two-way sealing knife valve - Google Patents

Abstract

The utility model relates to the technical field of bidirectional valves, in particular to a bidirectional sealing knife valve, which comprises a valve main body, wherein the inside of the valve main body is rectangular, a movable gate is arranged in the middle of the inside of the valve main body, the movable gate is rectangular, the bottom end of the inside of the valve main body is provided with a lifting device, the bottom end of the valve main body is provided with a miniature telescopic cylinder, the execution end of the miniature telescopic cylinder and the bottom end of the inside of the valve main body are respectively provided with a first rubber pad, a plurality of springs are arranged between the two first rubber pads, the first rubber pads positioned at the bottom end of the inside of the valve main body are fixedly connected with the valve main body, the execution end is started to move upwards through the miniature telescopic cylinder to drive the first rubber pads to move upwards, a bulge is formed in the inside of the valve main body, and when the inside of the valve main body is communicated with water flow, the water flow scours the retentate on the first rubber pads to scour, so that the retentate at the bottom end of the inside of the valve main body is prevented from accumulating, the valve body is corroded, the practicability of the device is improved, and the service life is prolonged.

Description

Two-way sealing knife valve

Technical Field

The utility model relates to the technical field of bidirectional valves, in particular to a bidirectional sealing knife valve.

Background

The knife gate valve is also called knife gate valve, the knife slurry valve is characterized in that the opening and closing piece of the knife gate valve is a gate plate, the moving direction of the gate plate is vertical to the fluid direction, the knife edge-shaped gate plate capable of cutting fiber materials is used for cutting off media, a chamber does not exist in the valve body actually, the gate plate is lifted in a side guide groove and is tightly pressed on a valve seat by lugs at the bottom, and sealing strips are arranged in the side guide groove and tightly attached to the end face of the gate plate to form a seal, so that the tightness of the knife gate valve is ensured.

Through searching, chinese patent number CN207406809U discloses a bidirectional sealing knife valve, including last valve body, lower valve body and valve pocket, connecting screw bottom fixed mounting has the valve clack, valve rod recess has been seted up to the valve clack inside, connecting screw top has cup jointed the mount, mount one side fixed mounting has the slider, the spout has been seted up to one side of valve pocket inner wall, the inlet has been seted up to lower valve body one side, the liquid outlet has been seted up to the other side of lower valve body, the flange dish has been installed to the both sides symmetry fixed mounting of lower valve body outer wall, the inboard fixed mounting of inlet and liquid outlet has the bellying, rubber seal layer has evenly been glued to the bellying surface, wedge is inlayed to the inside of lower valve body, wedge includes unable adjustment base, reset spring and sealing washer, this bidirectional sealing knife valve has reduced the friction with the valve body through valve clack and rubber seal layer contact, has improved the leakproofness of valve through valve clack bottom and wedge contact.

The sealing performance of the valve is improved, the return spring and the rubber elastic layer rebound together, the sealing gasket is reset, liquid is prevented from corroding the valve body, a groove corresponding to the valve plate is formed in the bottom of the valve body, a certain of retention matters are remained in the groove when the valve is used, a certain of retention matters are remained in the groove, the valve body is corroded for a long time, and the service life of the valve body is shortened.

Disclosure of Invention

The utility model aims to provide a bidirectional sealing knife valve, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a two-way sealing knife valve, includes the valve main part, the inside rectangle setting that is of valve main part, be equipped with movable gate in the middle of the valve main part is inside, movable gate is the rectangle setting, the inside bottom of valve main part just is located movable gate corresponds position department and is equipped with elevating gear, elevating gear includes miniature telescopic cylinder, first rubber pad and spring, valve main part bottom is equipped with miniature telescopic cylinder, miniature telescopic cylinder's execution end and the inside bottom of valve main part all is equipped with first rubber pad, two be equipped with a plurality of springs between the first rubber pad, be located the inside bottom of valve main part first rubber pad with valve main part fixed connection.

As a preferable scheme of the utility model, the valve body is arranged in a circular shape, a connecting column is arranged at the top end of the valve body, a screw rod is arranged in the connecting column, a rotary switch is arranged at the top end of the screw rod, a limiting block is arranged at the bottom end of the screw rod, and the limiting block is connected with the movable gate.

As a preferable scheme of the utility model, the top end of the movable gate is provided with a limiting rod, and the limiting block is positioned in the limiting rod.

As a preferable scheme of the utility model, the size of the limiting block is larger than that of the screw rod, and the size of the opening at the top end of the limiting rod is larger than that of the screw rod and smaller than that of the limiting block.

As a preferable scheme of the utility model, threads are arranged in the connecting column and close to the screw rod, and second rubber pads are arranged in the valve main body and positioned on two sides of the movable gate.

As a preferable scheme of the utility model, two ends of the outer part of the valve main body are respectively provided with a connecting port.

Compared with the prior art, the utility model has the beneficial effects that: to can generally in the bottom card of valve body and have the recess that corresponds complex with the valve plate among the prior art, but can remain some retentions in the recess during the use, can remain some retentions in the recess, can corrode the valve body for a long time, reduced the life of valve body, the telescopic assembly has been adopted in this application, send the signal of telecommunication to elevating gear through the controller, miniature telescopic cylinder starts the execution end and reciprocates, drive first rubber pad and reciprocate, form the arch in the valve main part inside, when the inside rivers intercommunication of valve main part, rivers wash can wash the retentions on the first rubber pad, avoid the inside bottom retentions of valve main part to pile up, corrode the valve body, improve the practicality of device, increase life.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional elevation view of the overall structure of the present utility model;

FIG. 3 is an enlarged view of the stop lever structure of the present utility model;

FIG. 4 is a side cross-sectional view of the overall structure of the present utility model;

fig. 5 is an enlarged view of the structure of the lifting device of the present utility model.

In the figure: 1. a valve body; 101. a connecting column; 102. a rotary switch; 103. a screw rod; 104. a limiting block; 105. a connection port; 106. a thread; 107. a second rubber pad; 2. a movable gate; 202. a limit rod; 3. a lifting device; 301. a miniature telescopic cylinder; 302. a first rubber pad; 303. and (3) a spring.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a two-way sealing knife valve, includes valve body 1, valve body 1 inside is the rectangle setting, be equipped with movable gate 2 in the middle of the valve body 1 inside, movable gate 2 is the rectangle setting, valve body 1 inside bottom just is located movable gate 2 corresponds position department and is equipped with elevating gear 3, elevating gear 3 includes miniature telescopic cylinder 301, first rubber pad 302 and spring 303, valve body 1 bottom is equipped with miniature telescopic cylinder 301, miniature telescopic cylinder 301's execution end and valve body 1 inside bottom all is equipped with first rubber pad 302, two be equipped with a plurality of springs 303 between the first rubber pad 302, be located valve body 1 inside bottom first rubber pad 302 with valve body 1 fixed connection.

It should be noted that, in this embodiment, when the valve body 1 of the bi-directional sealing knife valve is closed by the rotary switch 102, the movable gate 2 descends, the bottom end of the movable gate 2 butts against the first rubber pad 302, the first rubber pad 302 will be pressed down by the bottom end of the movable gate 2 due to the plasticity of the first rubber pad 302 and the internal spring 303, the sealing performance at the inner connection position of the movable gate 2 and the valve body 1 is stronger due to the first rubber pad 302, so as to avoid the water flow communication at the two ends of the movable gate 2, when the valve is opened, the movable gate 2 ascends, the first rubber pad 302 is pressed by the movable gate 2 and is sunken downwards, although the first rubber pad 302 returns to the original position under the reset of the spring 303, the surface still has the sunken structure, the accumulation of the object exists, the electric signal is sent to the micro telescopic cylinder 301 of the lifting device 3 by the controller, the actuating end of the micro telescopic cylinder 301 will be pushed up, the spring 303 and the first rubber pad 302 at this moment will be pressed up by the actuating end of the first rubber pad 302, so that the first rubber pad 302 at the inner bottom end of the valve body 1 is raised, when the water flow passes through the surface of the movable gate 2, the first rubber pad 302 will be detained, so that the inner object is carried away by the valve body and the accumulated object is avoided.

Referring to fig. 1-5, the valve body 1 is circularly configured, a connecting column 101 is disposed at the top end of the valve body 1, a screw rod 103 is disposed in the connecting column 101, a rotary switch 102 is disposed at the top end of the screw rod 103, a limiting block 104 is disposed at the bottom end of the screw rod 103, the limiting block 104 is connected with the movable gate 2, a limiting rod 202 is disposed at the top end of the movable gate 2, the limiting block 104 is disposed in the limiting rod 202, the size of the limiting block 104 is larger than that of the screw rod 103, the size of an opening at the top end of the limiting rod 202 is larger than that of the screw rod 103 and smaller than that of the limiting block 104, threads 106 are disposed in the connecting column 101 and close to the screw rod 103, second rubber pads 107 are disposed at two sides of the inside of the valve body 1 and on two sides of the movable gate 2, and connectors 105 are disposed at two ends outside the valve body 1.

It should be noted that, in this embodiment, when in use, the rotary switch 102 is rotated to drive the screw rod 103 to move on the thread 106 inside the connecting post 101, at this time, the limiting block 104 rotates in the limiting rod 202 along with the rotation of the screw rod 103, and presses the movable gate 2 downward to move or lift the movable gate 2 downward, and the second rubber pad 107 enhances the tightness between the movable gate 2 and the valve body 1, so as to avoid water leakage on both sides.

The working flow of the utility model is as follows: the model of the controller is as follows: "GTC-40A".

When the valve body 1 of the bidirectional sealing knife valve is closed through the rotary switch 102 in use, the movable gate 2 descends, the bottom end of the movable gate 2 butts against the first rubber pad 302, the first rubber pad 302 is pressed downwards due to the plasticity of the first rubber pad 302 and the internal spring 303, the sealing performance of the inner joint of the movable gate 2 and the valve body 1 is stronger due to the first rubber pad 302, the water flow communication at the two ends of the movable gate 2 is avoided, when the valve is opened, the movable gate 2 ascends, the first rubber pad 302 is pressed by the movable gate 2 and is sunken downwards, the first rubber pad 302 returns to the original position under the reset of the spring 303, but the surface is sunken, the accumulation of detained matters exists, an electric signal is sent to the miniature telescopic cylinder 301 of the lifting device 3 through the controller, the actuating end of the miniature telescopic cylinder 301 is started to move upwards, the actuating end of the telescopic cylinder at the moment can upwards prop up the spring 303 and the first rubber pad 302, so that the first rubber pad 302 positioned at the bottom end inside the valve body 1 is protruded, water flow can wash the surface of the first rubber pad 302 when water flow passes through, a retentate is taken away, corrosion inside the valve body 1 caused by accumulation of the retentate is avoided, when the miniature telescopic cylinder is used, the rotary switch 102 is rotated, the screw rod 103 is driven to move on the threads 106 inside the connecting column 101, at the moment, the limiting block 104 rotates in the limiting rod 202 along with rotation of the screw rod 103, the movable gate 2 is extruded downwards, the movable gate 2 is moved downwards or lifted, and the second rubber pad 107 enhances sealing performance inside the movable gate 2 and the valve body 1, so that water flow leakage on two sides is avoided.

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

Claims (6)

1. The utility model provides a two-way sealing knife valve, includes valve main part (1), its characterized in that: the valve is characterized in that the valve body (1) is arranged in a rectangular mode, a movable gate (2) is arranged in the middle of the interior of the valve body (1), the movable gate (2) is arranged in a rectangular mode, lifting devices (3) are arranged at the positions, corresponding to the movable gate (2), of the bottom end of the interior of the valve body (1), each lifting device (3) comprises a miniature telescopic cylinder (301), a first rubber pad (302) and a spring (303), the miniature telescopic cylinders (301) are arranged at the bottom end of the valve body (1), the first rubber pads (302) are arranged at the execution ends of the miniature telescopic cylinders (301) and the bottom end of the interior of the valve body (1), a plurality of springs (303) are arranged between the first rubber pads (302) and are located at the bottom end of the interior of the valve body (1).

2. The bi-directional sealing knife valve of claim 1 wherein: the valve is characterized in that the valve body (1) is arranged in a circular shape, a connecting column (101) is arranged at the top end of the valve body (1), a screw rod (103) is arranged in the connecting column (101), a rotary switch (102) is arranged at the top end of the screw rod (103), a limiting block (104) is arranged at the bottom end of the screw rod (103), and the limiting block (104) is connected with the movable gate (2).

3. A bi-directional sealing knife valve as claimed in claim 2, wherein: the top of the movable gate (2) is provided with a limiting rod (202), and the limiting block (104) is positioned in the limiting rod (202).

4. A bi-directional sealing knife valve as claimed in claim 3, wherein: the size of the limiting block (104) is larger than that of the screw rod (103), and the size of an opening at the top end of the limiting rod (202) is larger than that of the screw rod (103) and smaller than that of the limiting block (104).

5. A bi-directional sealing knife valve as claimed in claim 2, wherein: screw threads (106) are arranged in the connecting column (101) and close to the screw rod (103), and second rubber pads (107) are arranged on two sides of the movable gate (2) and in the valve body (1).

6. The bi-directional sealing knife valve of claim 1 wherein: and connecting ports (105) are formed at two external ends of the valve body (1).