Soft sealing gate valve with elastic sealing function

Abstract

The soft sealing gate valve with the elastic sealing function comprises a valve body, a valve plate is installed in the valve body, a sliding plate and an extrusion plate are installed at the two ends of the valve plate respectively, one side face of the extrusion plate is attached to the edge of a valve port, and when the sliding plate slides, the extrusion plate can be extruded to be tightly extruded with the valve port. Opening and closing operation of the valve body is achieved through vertical sliding of the valve plate, when the pressure in the valve body is too large, the pressure can be applied to the sliding plate and extrudes the sliding plate to slide on the inner side of the valve plate, the pressure can be applied to the extrusion plate in the sliding process of the sliding plate, the extrusion plate and the edge of a valve port in the valve body are tightly extruded, and therefore the valve body can be opened and closed. Therefore, the larger the pressure in the valve body is, the better the sealing performance of the valve plate is, and the situation that a traditional soft sealing gate valve cannot bear large pressure due to the fact that soft sealing is achieved only through a rubber valve plate is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to soft sealing gate valve technical field, concretely is a kind of soft sealing gate valve with elastic sealing function. BACKGROUND

[0002] Soft sealing gate valve is a kind of industrial valve, soft sealing gate valve controls the movement of valve seat and gate by the work of electro-hydraulic reversing valve, to realize opening and closing, when power is on, air pump starts to run, compressed air drives cylinder to make valve seat rise, to promote gate opening, when needing to close, air pump sends compressed air into cylinder, makes valve seat drop, and then closes gate, when operating, it can also be adjusted by manual operation, the opening and closing member of soft sealing gate valve is gate, the movement direction of gate is perpendicular to fluid direction, gate valve can only be fully opened and closed, cannot be adjusted and throttled, gate has two sealing surfaces, generally forms wedge, wedge angle varies with valve parameter, gate can be made into an integral, called rigid gate, can also be made into gate that can produce slight deformation, to improve its workability, make up the deviation of sealing surface angle in processing, this kind of gate is called elastic gate, in addition, the gate of soft sealing gate valve is integrally coated with rubber, rubber and gate are firmly connected, not easy to fall off, and have elastic memory, so that gate and valve seat can be tightly sealed, realize good sealing performance.

[0003] At present, soft sealing gate valve is mainly made into valve plate by rubber material to realize soft sealing effect, but valve plate position is fixed, when the pressure in valve body is larger, the elasticity of valve plate is limited, and leakage can easily occur under larger pressure.

[0004] Therefore, a soft sealing gate valve with elastic sealing function is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] 1. Technical problem to be solved by the utility model

[0006] In view of the defects in the prior art, the utility model aims to provide a soft sealing gate valve with elastic sealing function, to solve the problem that the soft sealing gate valve in the prior art is mainly made into valve plate by rubber material to realize soft sealing effect, but the valve plate position is fixed, when the pressure in valve body is larger, the elasticity of valve plate is limited, and leakage can easily occur under larger pressure.

[0007] 2. Technical scheme

[0008] To achieve the above object, the utility model provides the following technical scheme:

[0009] The utility model provides a soft sealing gate valve with elastic sealing function, including the valve body, the inside installation of valve body is equipped with valve plate, the both ends of valve plate are equipped with slide plate and extrusion plate respectively, one side surface of extrusion plate is in close contact with valve port edge, and the slide plate can extrude extrusion plate and valve port when sliding.

[0010] As the preferred scheme of the utility model, the top cover plate of the valve body is provided with a lead screw, the top of the lead screw is fixedly connected with a hand wheel, the lead screw is threadedly connected with the cover plate, and the hand wheel can drive the lead screw to move up and down when rotating.

[0011] As the preferred scheme of the utility model, the valve plate is installed at the bottom of the lead screw, the top of the valve plate is rotationally connected with the bottom of the lead screw, and the inside of the valve body is provided with a limiting sliding groove which is slidably connected with the valve plate.

[0012] As the preferred scheme of the utility model, the inside of the valve plate is provided with a support frame, a through hole is formed between the two ends of the cylinder at the center of the support frame, a blocking groove is formed at the edge of one end of the valve plate, and the slide plate is slidably installed at the inside of the valve plate and is limited by the blocking groove at one side surface.

[0013] As the preferred scheme of the utility model, a connecting rod is fixedly installed at the center of one side surface of the extrusion plate, a spring is sleeved and installed on the outer ring surface of the connecting rod, and the length of the spring is half of the length of the connecting rod.

[0014] As the preferred scheme of the utility model, one end of the connecting rod is fixedly connected with the center of one side surface of the slide plate through the inside of the through hole, the connecting rod is slidably connected with the through hole, and the spring is in close contact with the blocking groove and one end of the valve plate at one side surface of the extrusion plate when the slide plate is in the initial state.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The utility model realizes the opening and closing operation of the valve body through the up-down sliding of the valve plate, when the pressure in the valve body is too large, the pressure is applied to the slide plate and extrudes the slide plate to slide at the inside of the valve plate, the extrusion plate is pressed in the process of the sliding of the slide plate, the extrusion plate is tightly extruded with the valve port edge in the valve body, the sealing performance of the valve plate is better when the pressure in the valve body is larger, the utility model effectively improves the situation that the traditional soft sealing gate valve only realizes soft sealing through the rubber valve plate and is difficult to bear larger pressure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model a soft sealing gate valve with elastic sealing function;

[0019] Figure 2 It is the valve body internal structure schematic view of the soft sealing gate valve with elastic sealing function of the utility model;

[0020] Figure 3 It is the valve plate unfolding structure schematic view of the soft sealing gate valve with elastic sealing function of the utility model.

[0021] In the drawing: 1, valve body; 11, limiting sliding groove; 2, screw rod; 3, hand wheel; 4, valve plate; 41, sliding plate; 42, extrusion plate; 43, connecting rod; 44, spring; 45, support frame; 46, through hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1-3 The embodiment provides a soft sealing gate valve with elastic sealing function, which comprises a valve body 1, a valve plate 4 is arranged in the valve body 1, sliding plates 41 and extrusion plates 42 are arranged at the two ends of the valve plate 4 respectively, one side surface of the extrusion plate 42 is attached to the valve port edge, and the sliding plate 41 can extrude the extrusion plate 42 and the valve port when sliding. When the valve plate 4 is used, the opening and closing operation of the valve body 1 is realized by the up-down sliding of the valve plate 4. When the pressure in the valve body 1 is too large, the pressure is applied to the sliding plate 41 and the sliding plate 41 slides in the inner side of the valve plate 4. In the sliding process of the sliding plate 41, the pressure can be applied to the extrusion plate 42, so that the extrusion plate 42 is tightly extruded with the valve port edge in the valve body 1. Therefore, the larger the pressure in the valve body 1 is, the better the sealing performance of the valve plate 4 is, and the situation that the traditional soft sealing gate valve can hardly bear large pressure by only realizing soft sealing through the rubber valve plate is effectively improved.

[0025] In the embodiment, as Figure 1 and Figure 2As shown, the top cover plate of the valve body 1 is provided with a screw rod 2, the top of the screw rod 2 is fixedly connected with a hand wheel 3, the screw rod 2 is in threaded connection with the cover plate, the hand wheel 3 can drive the screw rod 2 to move up and down when rotating, the valve plate 4 is installed at the bottom of the screw rod 2, the top of the valve plate 4 is in rotary connection with the bottom of the screw rod 2, the inside of the valve body 1 is provided with a limiting sliding groove 11 in sliding connection with the valve plate 4, thus when the screw rod 2 is rotated by the hand wheel 3, the screw rod 2 will drive the valve plate 4 to slide up and down on the inside of the limiting sliding groove 11.

[0026] In the embodiment, as shown in Figure 2 and Figure 3 As shown, the inside of the valve plate 4 is provided with a supporting frame 45, the center of the supporting frame 45 is provided with a through hole 46 between the two ends of the cylinder, one end of the valve plate 4 is provided with a blocking groove, the sliding plate 41 is in sliding connection with the inside of the valve plate 4 and is limited by the blocking groove on one side, thus the sliding plate 41 will not slide out of the inside of the valve plate 4.

[0027] In the embodiment, as shown in Figure 3 As shown, one end of the connecting rod 43 is fixedly connected with the center of one side of the sliding plate 41 through the inside of the through hole 46, the connecting rod 43 is in sliding connection with the through hole 46, the spring 44 is in close contact with the blocking groove and the side of the pressing plate 42 in the initial state, and the side of the pressing plate 42 is in close contact with one end of the valve plate 4, thus when the pressure inside the valve body 1 is normal, the sliding plate 41 and the pressing plate 42 will not slide, when the pressure inside the valve body 1 is too large, the pressing plate 42 will automatically slide and tightly press the valve port inside the valve body 1, and the larger the pressure, the better the sealing performance.

[0028] Working principle: the soft sealing gate valve with elastic sealing function is used, first, the screw rod 2 will drive the valve plate 4 to slide up and down on the inside of the limiting sliding groove 11 when the screw rod 2 is rotated by the hand wheel 3, the opening and closing operation of the valve body 1 is realized, when the pressure inside the valve body 1 is too large, the pressure will be applied to the sliding plate 41 and the sliding plate 41 will slide on the inside of the valve plate 4, the sliding plate 41 will slide in the through hole 46 through the pressing connecting rod 43 to press the pressing plate 42, the pressing plate 42 will tightly press the valve port edge inside the valve body 1, when the pressure is reduced, the pressing plate 42 will return to the original position under the action of the spring 44, thus the larger the pressure inside the valve body 1, the better the sealing performance of the valve plate 4, which effectively improves the situation that the traditional soft sealing gate valve can only realize soft sealing by the rubber valve plate and is difficult to withstand large pressure.

[0029] All the technical features in the embodiment can be freely combined according to actual needs.

[0030] The above embodiment is a preferred implementation scheme of the utility model, in addition to this, the utility model can be realized in other ways, any obvious replacement without departing from the technical scheme concept is within the protection scope of the utility model.

Claims

1. A soft seal gate valve having elastic sealing function, comprising a valve body (1), characterized in that: The valve body (1) is internally provided with a valve plate (4), both ends of the valve plate (4) are respectively provided with a sliding plate (41) and a pressing plate (42), one side of the pressing plate (42) is in contact with the edge of the valve port, and the sliding plate (41) can press the pressing plate (42) to tightly press the valve port when sliding.

2. A soft seal gate valve having a resilient sealing function according to claim 1, characterized in that: The top cover plate of the valve body (1) is provided with a lead screw (2), the top of the lead screw (2) is fixedly connected with a hand wheel (3), the lead screw (2) is in threaded connection with the cover plate, and the hand wheel (3) can drive the lead screw (2) to move up and down when rotating.

3. A soft seal gate valve with elastic sealing function according to claim 1, characterized in that: The valve plate (4) is installed at the bottom of the lead screw (2), the top of the valve plate (4) is in rotary connection with the bottom of the lead screw (2), and the two side surfaces of the valve body (1) are internally provided with limiting sliding grooves (11) in sliding connection with the valve plate (4).

4. The soft seal gate valve with elastic sealing function according to claim 1, characterized in that: The inner side surface of the valve plate (4) is provided with a support frame (45), a through hole (46) is formed between the two ends of the cylinder at the center of the support frame (45), a blocking edge groove is formed at one end edge of the valve plate (4), and the sliding plate (41) is slidingly installed at the inner side of the valve plate (4) and is limited by the blocking edge groove on one side surface.

5. The soft seal gate valve having a resilient sealing function according to claim 1, characterized in that: One side surface at the center of the pressing plate (42) is fixedly provided with a connecting rod (43), the outer ring surface of the connecting rod (43) is sleeved with a spring (44), and the length of the spring (44) is half of the length of the connecting rod (43).

6. A soft seal gate valve having a resilient sealing function according to claim 5, characterized in that: One end of the connecting rod (43) penetrates through the inner side of the through hole (46) and is fixedly connected with the center of one side surface of the sliding plate (41), the connecting rod (43) is in sliding connection with the through hole (46), and the spring (44) is in close contact with the blocking edge groove and one side surface of the pressing plate (42) in the initial state.

Images