Clamping plate structure of double-clack check valve

Abstract

The utility model discloses a clamping plate structure of a double-clack check valve, and relates to the field of check valves. The double-clack check valve clamping plate structure comprises a positioning plate body, a cavity and a liquid inlet are formed in a valve body, the positioning plate body is fixedly connected to the inner wall of the cavity, and a positioning seat is fixedly arranged in the liquid inlet; a valve rod is inserted into the positioning plate body, valve clacks are rotationally arranged on the two sides of the valve rod, the side faces of the valve clacks abut against the positioning base and the inner wall of the cavity, and an elastic reset assembly is arranged between the valve rod and the valve clacks. According to the double-clack check valve clamping plate structure, the positioning plate body, the valve rod and the elastic reset assembly are all arranged between the valve clacks on the two sides, the shape is long and narrow, then the valve clacks on the two sides can rotate to the maximum degree, and fluid can conveniently flow in the double-clack check valve clamping plate structure.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a double-flap check valve clamping plate structure. Background Art

[0002] As the name suggests, a double-flap check valve has two sealing surfaces. This type of valve is similar in structure to a globe valve, but it opens and closes via the rotation of two flaps. When the fluid flows in the forward direction, the flaps rotate upward, opening the valve and allowing the fluid to flow freely. When the fluid flows in the reverse direction, the flaps, reacting to the fluid's reaction force, rotate downward, closing the valve and preventing backflow.

[0003] In the past, double-flap check valves would have a fixed seat between the two flaps, and then the two flaps would be rotatably connected to the two sides of the fixed seat respectively. In order to enable the flaps to rebound quickly and automatically, an elastic member would be provided between the flaps and the side faces of the fixed seat. However, this would cause the fixed seat and the elastic member to occupy a larger space inside the valve body, which would affect the flow of the internal fluid inside the valve body. Therefore, this application proposes a double-flap check valve clamping structure. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a double-flap check valve clamping plate structure, which solves the problem that in order to enable the flap to rebound quickly and automatically, an elastic part is provided between the flap and the side of the fixed seat, but this will cause the fixed seat and the elastic part to occupy a larger space inside the valve body, which will affect the flow of the fluid inside the valve body.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a double-flap check valve card plate structure, including a positioning plate body, the positioning plate body is fixedly arranged inside the valve body, the interior of the valve body is provided with a cavity and a liquid inlet, the positioning plate body is fixedly connected to the inner wall of the cavity, and a positioning seat is fixedly provided inside the liquid inlet;

[0006] A valve stem is inserted into the interior of the positioning plate body, and valve flaps are rotatably provided on both sides of the valve stem. The side surfaces of the valve flaps are against the positioning seat and the inner wall of the cavity, and an elastic reset component is provided between the valve stem and the valve flaps.

[0007] Preferably, a fixing plate is fixedly arranged between the top of the positioning plate body and the inner wall of the cavity.

[0008] Preferably, the fixing plate is fixedly connected to the valve body by bolts.

[0009] Preferably, a limit strip is fixedly provided on the side of the valve flap.

[0010] Preferably, the elastic reset assembly includes a shaft sleeve and a torsion spring, and the shaft sleeve and the torsion spring are both sleeved on the outside of the valve stem, and the two ends of the torsion spring are respectively connected to the shaft sleeve and the valve disc.

[0011] The utility model discloses a double-flap check valve clamping plate structure, which has the following beneficial effects:

[0012] During use, the double-flap check valve clamping structure utilizes the provided positioning plate body to effectively install the valve stem. The side surface of the valve disc abuts against the positioning seat and the inner wall of the cavity. When the fluid flows toward one side of the valve disc, the valve discs on both sides can rotate relative to the valve stem, while the valve disc cannot rotate to the other side, thereby achieving a check effect. At the same time, the positioning plate body, the valve stem and the elastic reset assembly are all arranged between the valve discs on both sides, and are relatively narrow and long, so that the valve discs on both sides can rotate to the greatest extent, facilitating the flow of fluid therein.

[0013] The double-flap check valve clamp structure is provided with a shaft sleeve and a torsion spring. Since the two ends of the torsion spring are respectively connected to the shaft sleeve and the valve disc, the valve disc will be quickly reset under the action of the torsion spring in the absence of external force. At the same time, the size of the occupied space is reduced by the connection between the shaft sleeve and the torsion spring and the valve disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a cross-sectional view of the structure of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the utility model.

[0017] In the figure: 1. valve body; 11. cavity; 12. liquid inlet; 13. positioning seat; 2. positioning plate body; 21. fixing plate; 3. valve stem; 4. valve disc; 41. limit strip; 5. elastic reset assembly; 51. shaft sleeve; 52. torsion spring. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] The present embodiment provides a double-flap check valve retaining plate structure, resolving the problem of disposing an elastic member between the flap and the side of the fixing seat to enable the flap to rebound quickly and automatically. However, this causes the fixing seat and the elastic member to occupy a large space inside the valve body, thereby affecting the flow of the fluid inside the valve body. The positioning plate body 2, valve stem 3, and elastic reset assembly 5 are all disposed between the valve flaps 4 on both sides, and are relatively narrow and long, thereby enabling the valve flaps 4 on both sides to rotate to the greatest extent possible, facilitating the flow of fluid therein.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] The utility model discloses a double-flap check valve clamping plate structure according to the attached Figure 1-2 As shown, it includes a positioning plate body 2, which is fixedly arranged inside the valve body 1. The interior of the valve body 1 is provided with a cavity 11 and a liquid inlet 12. The positioning plate body 2 is fixedly connected to the inner wall of the cavity 11, and a positioning seat 13 is fixedly provided inside the liquid inlet 12.

[0022] A valve stem 3 is inserted into the interior of the positioning plate body 2, and valve flaps 4 are rotatably provided on both sides of the valve stem 3. The side surfaces of the valve flap 4 are in contact with the positioning seat 13 and the inner wall of the cavity 11, and an elastic reset component 5 is provided between the valve stem 3 and the valve flap 4.

[0023] During use, the positioning plate body 2 set can effectively install the valve stem 3, and the side of the valve flap 4 is against the positioning seat 13 and the inner wall of the cavity 11. When the fluid flows toward one side of the valve flap 4, the valve flaps 4 on both sides can rotate relative to the valve stem 3, while the valve flap 4 cannot rotate to the other side, thereby achieving a check effect. At the same time, the positioning plate body 2 and the valve stem 3 and the elastic reset assembly 5 are all arranged between the valve flaps 4 on both sides, and are relatively narrow and long, so that the valve flaps 4 on both sides can rotate to the greatest extent, making it convenient for the fluid to flow inside them.

[0024] Furthermore, a fixing plate 21 is fixedly provided between the top of the positioning plate body 2 and the inner wall of the cavity 11 .

[0025] Furthermore, the fixing plate 21 is fixedly connected to the valve body 1 by bolts.

[0026] Furthermore, a limit strip 41 is fixedly provided on the side of the valve flap 4 .

[0027] Specifically disclosed, the elastic reset assembly 5 includes a sleeve 51 and a torsion spring 52 , both of which are sleeved on the outside of the valve stem 3 , and two ends of the torsion spring 52 are connected to the sleeve 51 and the valve disc 4 respectively.

[0028] By setting the shaft sleeve 51 and the torsion spring 52, since the two ends of the torsion spring 52 are respectively connected to the shaft sleeve 51 and the valve flap 4, the valve flap 4 will be quickly reset under the action of the torsion spring 52 in the absence of external force. At the same time, the size of the occupied space is reduced by the connection between the shaft sleeve 51 and the torsion spring 52 and the valve flap 4.

[0029] During use, the positioning plate body 2 set can effectively install the valve stem 3, and the side of the valve flap 4 is against the positioning seat 13 and the inner wall of the cavity 11. When the fluid flows toward one side of the valve flap 4, the valve flaps 4 on both sides can rotate relative to the valve stem 3, while the valve flap 4 cannot rotate to the other side, thereby achieving a check effect. At the same time, the positioning plate body 2 and the valve stem 3 and the elastic reset assembly 5 are all arranged between the valve flaps 4 on both sides, and are relatively narrow and long, so that the valve flaps 4 on both sides can rotate to the greatest extent, making it convenient for the fluid to flow inside them.

[0030] 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 illustrative of the principles of 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. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A double-flap check valve clamping plate structure, comprising a positioning plate body (2), wherein the positioning plate body (2) is fixedly arranged inside a valve body (1), and is characterized in that: The valve body (1) is provided with a cavity (11) and a liquid inlet (12) inside, the positioning plate body (2) is fixedly connected to the inner wall of the cavity (11), and a positioning seat (13) is fixedly provided inside the liquid inlet (12); A valve stem (3) is inserted into the interior of the positioning plate body (2), and valve flaps (4) are rotatably provided on both sides of the valve stem (3), the side surfaces of the valve flaps (4) are in contact with the positioning seat (13) and the inner wall of the cavity (11), and an elastic reset component (5) is provided between the valve stem (3) and the valve flap (4).

2. The double-flap check valve clamping plate structure according to claim 1, characterized in that: A fixing plate (21) is fixedly arranged between the top of the positioning plate body (2) and the inner wall of the cavity (11).

3. The double-flap check valve clamping plate structure according to claim 2, characterized in that: The fixing plate (21) is fixedly connected to the valve body (1) via bolts.

4. The double-flap check valve clamping plate structure according to claim 1, characterized in that: A limiting strip (41) is fixedly provided on the side of the valve flap (4).

5. The double-flap check valve clamping plate structure according to claim 1, characterized in that: The elastic reset assembly (5) comprises a shaft sleeve (51) and a torsion spring (52), wherein the shaft sleeve (51) and the torsion spring (52) are both sleeved on the outside of the valve stem (3), and the two ends of the torsion spring (52) are respectively connected to the shaft sleeve (51) and the valve disc (4).

Images