Gate valve sealing seat

Abstract

The utility model relates to the technical field of gate valves, in particular to a gate valve sealing seat which comprises a transverse flow channel, flange plates are fixedly installed at the left end and the right end of the outer side surface of the transverse flow channel, a valve body is arranged in the middle of the transverse flow channel, and a gate plate is arranged in the middle of the interior of the transverse flow channel. And sealing seats are arranged in the transverse flow channels on the left side and the right side of the gate plate correspondingly, and auxiliary mechanisms are arranged at the positions, at the lower end of the valve body, on the left side and the right side of the gate plate correspondingly. In the utility model, along with the lifting movement process of the flashboard, the lifting plate is always clung to the two sides of the flow guide hole in the flashboard, water in the transverse flow channel is prevented from entering the lower side of the valve body through the flow guide hole, the lifting plate is clung to the flashboard and moves after the flashboard moves for a certain distance, and the friction distance between the lifting plate and the flashboard is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a gate valve sealing seat. Background Art

[0002] The gate valve is an opening and closing component, the movement direction of the gate is perpendicular to the direction of the fluid. The current gate valve sealing form for the gate is composed of a sealing seat and a sealing ring on the sealing seat. Although this form can seal and open the pipeline, due to the high pressure of the medium in the pipeline, frequently opening the gate will cause the sealing ring on the pressure side of the gate to be easily worn and damaged (due to the medium pressure acting on the gate).

[0003] The utility model patent with authorization announcement number CN218408576U discloses a movable sealing seat flat gate valve. The utility model includes a valve body, a transverse flow channel, a gate plate mounted on the valve body, sealing seats on the left and right sides of the gate plate, a first O-ring mounted on each sealing seat, a sealing ring mounted on the opposing surface of each sealing seat, a rubber triangular sealing ring mounted on the opposing surface of each sealing seat, compression springs mounted on the sides of each sealing seat, a transverse flow guide hole at the bottom of the gate plate, dovetail slots on the left and right sides of the gate plate, dovetail blocks fixed to each sealing seat, a second O-ring mounted on each dovetail block, and a valve stem mounted on the valve body to drive the gate plate up and down. The utility model has an ingenious and reasonable structural design, can improve the sealing performance of the flat gate valve, increase the corrosion resistance of the elastic member, increase the bending resistance of the gate plate, increase the service life of the flat gate valve, and reduce the cost of use, and is worthy of promotion and application.

[0004] While the aforementioned utility model can extend the service life of a flat gate valve, during the vertical movement of the flat gate, half of the diversion hole on the gate plate may be located within the transverse flow channel, while the other half is located within the lower connecting cavity. During this period, the liquid in the transverse flow channel flows through the diversion hole into the lower connecting cavity, causing the components in the lower connecting cavity to rust more rapidly upon contact with water, thus reducing the service life of the components. In view of this, a gate valve sealing seat is proposed. Utility Model Content

[0005] The utility model provides a gate valve sealing seat to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A gate valve sealing seat, comprising a transverse flow channel, wherein flanges are fixedly mounted on both left and right ends of the outer surface of the transverse flow channel, and a valve body is arranged in the middle of the transverse flow channel;

[0008] A gate plate is provided in the middle of the transverse flow channel, sealing seats are provided in the transverse flow channels on the left and right sides of the gate plate, and auxiliary mechanisms are provided at the lower ends of the valve body on the left and right sides of the gate plate.

[0009] As a preferred technical solution, the sealing seat is fixedly installed inside the transverse flow channel, and a lifting groove is provided at the lower end of the side surface of the sealing seat.

[0010] As a preferred technical solution, a guide hole is provided at the lower end of the side surface of the gate plate, and auxiliary grooves are provided at both left and right ends of the lower surface inside the guide hole.

[0011] As a preferred technical solution, the auxiliary mechanism includes a fixed plate, a lifting plate arranged close to the fixed plate, a connecting groove opened at the upper end of the lifting plate, and an auxiliary plate welded to the right side of the lower surface of the connecting groove.

[0012] As a preferred technical solution, the height of the lifting groove is less than half of the outer diameter of the sealing seat, and the lifting groove is an overall U-shaped structure.

[0013] As a preferred technical solution, the sealing seat is annular, and the size of the inner ring is consistent with the size of the guide hole.

[0014] As a preferred technical solution, the size of the auxiliary piece is consistent with the size of the auxiliary groove, and the size of the lifting plate is larger than the size of the guide hole.

[0015] As a preferred technical solution, a sealing rubber pad is attached to the right side surface of the lifting plate, and a non-slip rubber pad is attached to the left side wall surface of the lifting plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. As the gate plate moves up and down, the lifting plate is always in close contact with both sides of the diversion hole on the gate plate to prevent the water in the transverse flow channel from entering the lower side of the valve body through the diversion hole.

[0018] 2. The lifting plate is placed close to the gate plate. The lifting plate moves after the gate plate moves a certain distance to reduce the friction distance between the lifting plate and the gate plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure inside the transverse flow channel of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the lifting tank in the utility model;

[0022] Figure 4 This is a structural diagram of the gate plate in the utility model;

[0023] Figure 5 It is a structural diagram of the auxiliary mechanism in the utility model;

[0024] The meaning of each number in the figure is:

[0025] 1. Horizontal flow channel; 11. Sealing seat; 111. Lifting groove; 12. Gate; 121. Guide hole; 122. Auxiliary groove; 13. Auxiliary mechanism; 131. Fixed plate; 132. Lifting plate; 133. Auxiliary plate; 134. Connecting groove; 2. Flange; 3. Valve body. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 5 , this embodiment provides a technical solution:

[0028] A gate valve sealing seat comprises a transverse flow channel 1, flanges 2 are fixedly mounted on both ends of the left and right outer surfaces of the transverse flow channel 1, a valve body 3 is arranged in the middle position of the transverse flow channel 1, a gate plate 12 is arranged in the middle position inside the transverse flow channel 1, sealing seats 11 are arranged in the transverse flow channel 1 on the left and right sides of the gate plate 12, and auxiliary mechanisms 13 are arranged at the lower ends of the valve body 3 on the left and right sides of the gate plate 12. Through the above-mentioned mechanism, liquid can be prevented from leaving the transverse flow channel 1 and entering the valve body 3 during the lifting and lowering of the gate plate 12, thereby preventing the parts in the valve body 3 from rusting faster and shortening the service life of the parts.

[0029] Furthermore, the sealing seat 11 is fixedly installed inside the transverse flow channel 1 , and a lifting groove 111 is opened at the lower end of the side surface of the sealing seat 11 , and the lifting groove 111 is used for sliding connection of the lifting plate 132 .

[0030] Furthermore, a guide hole 121 is opened at the lower end of the side surface of the gate plate 12 , and auxiliary grooves 122 are opened at the left and right ends of the lower surface inside the guide hole 121 . The auxiliary grooves 122 on both sides correspond to the positions of the auxiliary pieces 133 .

[0031] In this embodiment, the auxiliary mechanism 13 includes a fixed plate 131, a lifting plate 132 arranged close to the fixed plate 131, a connecting groove 134 opened at the upper end of the lifting plate 132, and an auxiliary plate 133 welded to the right side of the lower surface of the connecting groove 134. Through the auxiliary plate 133, the lifting plate 132 moves to a certain extent as the gate plate 12 moves.

[0032] In this embodiment, the height of the lifting groove 111 is less than half of the outer diameter of the sealing seat 11 , and the lifting groove 111 is in a U-shaped structure as a whole, for the installation and connection of the lifting plate 132 .

[0033] In this embodiment, the sealing seat 11 is annular, and the size of the inner ring is consistent with the size of the guide hole 121 to prevent the liquid from being affected in passing through the guide hole 121 .

[0034] In this embodiment, the size of the auxiliary piece 133 is consistent with that of the auxiliary groove 122 , and the size of the lifting plate 132 is larger than that of the guide hole 121 , ensuring that the lifting plate 132 can cover the guide hole to a certain extent.

[0035] In this embodiment, a sealing rubber pad is attached to the right surface of the lifting plate 132, and an anti-slip rubber pad is attached to the left wall surface of the lifting plate 132. The friction between the lifting plate 132 and the fixed plate 131 is greater than the friction between the lifting plate 132 and the gate plate 12.

[0036] It is worth mentioning that the structure and working principle of the flange 2 involved in this embodiment are well known to those skilled in the art and will not be elaborated here.

[0037] During the specific use of the gate valve sealing seat of this embodiment, when the gate is closed, the gate plate 12 is located at the lower end of the valve body 3, and the guide hole 121 is located on the lower side of the transverse flow channel 1 as a whole. When the valve needs to be opened, the gate plate 12 is controlled to move upward. During the movement, the guide hole 121 first moves upward with the gate plate 12. When the guide hole 121 enters the transverse flow channel 1, the lifting plates 132 on both sides of the guide hole 121 block it, so that the liquid cannot enter the lower end of the valve body 3 through the guide hole 121. As the gate plate 12 rises, until the auxiliary piece 133 contacts the auxiliary groove 122, the lifting plate 132 is driven by the auxiliary piece 133 to rise to a certain extent along with the gate plate 12 until the guide hole 121 completely enters the transverse flow channel 1. At this time, the lifting plate 132 also completely enters the lifting groove 111.

[0038] When the valve is closed, the guide hole 121 is first controlled to move downward by the gate plate 12. As the guide hole 121 moves downward, part of the guide hole 121 enters the lower side of the valve body 3, and part of the guide hole 121 remains inside the transverse flow channel 1. At this time, the lifting plate 132 located in the lifting groove 111 can effectively prevent the liquid from entering the lower side of the valve body 3 until the guide hole 121 completely enters the lower side of the valve body 3. The inner upper surface of the guide hole 121 first contacts the auxiliary piece 133, which will cause the lifting plate 132 to move downward with the guide hole 121 until it enters the lower side of the valve body 3 and returns to its original position.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate valve sealing seat, comprising a transverse flow channel (1), characterized in that: Flanges (2) are fixedly mounted on both left and right ends of the outer surface of the transverse flow channel (1), and a valve body (3) is provided in the middle of the transverse flow channel (1); A gate plate (12) is provided in the middle of the transverse flow channel (1), sealing seats (11) are provided in the transverse flow channel (1) on both sides of the gate plate (12), and auxiliary mechanisms (13) are provided at the lower ends of the valve body (3) on both sides of the gate plate (12).

2. The gate valve sealing seat according to claim 1, characterized in that: The sealing seat (11) is fixedly installed inside the transverse flow channel (1), and a lifting groove (111) is provided at the lower end of the side surface of the sealing seat (11).

3. The gate valve sealing seat according to claim 2, characterized in that: A guide hole (121) is provided at the lower end of the side surface of the gate plate (12), and auxiliary grooves (122) are provided at both left and right ends of the lower surface inside the guide hole (121).

4. The gate valve sealing seat according to claim 3, characterized in that: The auxiliary mechanism (13) comprises a fixed plate (131), a lifting plate (132) arranged close to the fixed plate (131), a connecting groove (134) opened at the upper end of the lifting plate (132), and an auxiliary piece (133) welded to the right side of the lower surface of the connecting groove (134).

5. The gate valve sealing seat according to claim 2, characterized in that: The height of the lifting groove (111) is less than half of the outer diameter of the sealing seat (11), and the lifting groove (111) is in a U-shaped structure as a whole.

6. The gate valve sealing seat according to claim 3, characterized in that: The sealing seat (11) is annular, and the size of the inner ring is consistent with the size of the guide hole (121).

7. The gate valve sealing seat according to claim 4, characterized in that: The size of the auxiliary piece (133) is consistent with the size of the auxiliary groove (122), and the size of the lifting plate (132) is larger than the size of the guide hole (121).

8. The gate valve sealing seat according to claim 4, characterized in that: A sealing rubber pad is attached to the right side surface of the lifting plate (132), and an anti-slip rubber pad is attached to the left side wall surface of the lifting plate (132).

Images