Double-opening type flap valve

Abstract

The utility model discloses a double-open type flap valve which comprises a valve seat, a first valve plate and a second valve plate are arranged on the two sides of the interior of a pipeline at the front end of the valve seat respectively, the first valve plate and the second valve plate are symmetrical, and a mounting frame is arranged at the top of the front end of the valve seat and corresponds to the top end of the first valve plate and the top end of the second valve plate; the mounting frame comprises an electric telescopic arm which is transversely and fixedly mounted in the tail end of the mounting frame. Through the design that the electric telescopic arm and the driving base are arranged on the mounting frame, the structural design of the two valve plates is adopted, and the combined structure of the connecting base and the push rod is adopted, opening and closing of the flap valve are controlled more accurately and efficiently, the requirement for manual operation is lowered, and the automation level is improved; therefore, the situation that the two valve plates cannot be automatically closed by follow-up external water pressure due to the fact that the two valve plates are attached is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of flap doors, in particular to a double-opening flap door. Background Art

[0002] Double-opening flap door usually refers to a backflow prevention device installed at the end of the drainage pipe, which can prevent external water from backflowing into the drainage system. The design of this flap door can be round or square, and the main materials include stainless steel, cast iron, steel and composite materials. Its working principle is to use the pressure of the water source to open and close the door panel. When the internal water pressure is greater than the external pressure, the flap door will open to let the water flow out; when the external pressure is greater than the internal water pressure, the flap door will close to prevent water from backflowing.

[0003] Structurally, the flap valve consists of a valve seat, a valve plate, a sealing ring, a hinge, etc. This device can be effectively used in water conservancy systems, municipal sewage, urban flood control and drainage, sewage treatment plants, water plants, etc.

[0004] Most of the existing double-opening flap doors are lateral single-opening flap doors. The lateral single-opening flap doors are opened by the water pressure in the valve seat, which pushes the flap doors on both sides outward respectively, and the direction is horizontal. When the double-opening flap door is closed, due to the structural characteristics of the lateral single-opening flap door, the seal may be subjected to a large water pressure, resulting in poor sealing performance and prone to leakage. In addition, during the closing process, the valve is subjected to a large water pressure, which may cause the valve itself or the seal to deform.

[0005] Therefore, it is necessary to invent a double-opening door to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a double-opening flap door to solve the above-mentioned deficiencies in the technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-opening flap door, comprising a valve seat, a first valve plate and a second valve plate are respectively arranged on both sides of the interior of the front end pipeline of the valve seat, the first valve plate and the second valve plate are symmetrical, and a mounting frame is arranged at the front end top of the valve seat and at a position corresponding to the top ends of the first valve plate and the second valve plate;

[0008] The mounting frame comprises:

[0009] The electric telescopic arm is fixedly installed transversely inside the tail end of the mounting frame, a driving seat is arranged inside the front end of the mounting frame, and the tail end of the driving seat is fixedly connected to the output end of the electric telescopic arm;

[0010] A column is vertically fixedly installed in the middle position of the front end pipeline port of the valve seat and located on the outer sides of the first valve plate and the second valve plate.

[0011] As a preferred solution of the utility model, sleeves are fixedly installed on the upper and lower ends of the column, and limiting rods are fixedly installed on the outer walls of both sides of the two sleeves. There is a certain angle between the limiting rods on both sides of the same sleeve, and the limiting rods are made of metal material.

[0012] As a preferred solution of the utility model, a No. 1 shaft sleeve is fixedly installed on the upper and lower ends of the vertical side of the No. 1 valve plate, and a No. 2 shaft sleeve is fixedly installed in the middle position of the vertical side of the No. 2 valve plate. The No. 1 valve plate is spliced ​​with the opposite sides of the No. 2 valve plate, and the upper and lower ends of the No. 2 shaft sleeve are rotatably connected to the opposite ends of the two No. 1 shaft sleeves.

[0013] As a preferred solution of the utility model, a No. 1 connecting seat is fixedly installed on the top end of the No. 1 sleeve at the upper end of the No. 1 valve plate, and a shaft rod is fixedly installed on the upper and lower ends of the No. 2 sleeve, and the upper end of the shaft rod passes through the No. 1 sleeve and the No. 1 connecting seat at the upper end of the No. 1 valve plate, and a No. 2 connecting seat is fixedly installed on the top end of the shaft rod.

[0014] As a preferred solution of the utility model, the structure of the No. 1 connecting seat is the same as that of the No. 2 connecting seat, a protrusion is provided on one side of the No. 1 connecting seat, and the No. 1 connecting seat and the No. 2 connecting seat are symmetrically distributed in the up and down directions. A push rod is fixedly installed on the bottom end of the protrusion of the No. 1 connecting seat, and a push rod is fixedly installed on the top end of the protrusion of the No. 2 connecting seat.

[0015] As a preferred solution of the utility model, a cross-shaped notch is provided on the driving seat, the push rods of the No. 1 connecting seat and the No. 2 connecting seat are respectively in the notches on both sides of the driving seat, a part of the upper end of the shaft rod is located in the middle notch of the driving seat, and the driving seat is located between the No. 1 connecting seat and the No. 2 connecting seat.

[0016] As a preferred solution of the utility model, sliders are fixedly installed on both sides of the driving seat, guide grooves are provided on the inner walls on both sides of the mounting frame, and the driving seat is slidably connected to the guide grooves on the inner walls on both sides of the mounting frame through the sliders on both sides.

[0017] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0018] 1. By setting the design of electric telescopic arm and driving seat on the mounting frame, and the structural design of two valve plates, and through the combined structure of connecting seat and push rod, the opening and closing of flap door can be controlled more accurately and efficiently, which reduces the demand of manual operation and improves the level of automation. The setting of column and limit rod limits the expansion angle of two valve plates, thereby preventing the two valve plates from fitting together, resulting in the inability of subsequent external water pressure to automatically close the two valve plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0021] Figure 2 It is an exploded view from the first perspective of the overall structure of the utility model;

[0022] Figure 3 It is an exploded view from a second perspective of the overall structure of the utility model;

[0023] Figure 4 It is a three-dimensional diagram of the drive seat of the utility model;

[0024] Figure 5 This is a connection diagram of the valve plate of the utility model.

[0025] Description of reference numerals:

[0026] 1. Valve seat; 2. Valve plate No. 1; 21. Bushing No. 1; 22. Connecting seat No. 1; 3. Valve plate No. 2; 31. Bushing No. 2; 32. Connecting seat No. 2; 33. Shaft rod; 4. Push rod; 5. Mounting frame; 51. Electric telescopic arm; 52. Drive seat; 53. Slider; 54. Guide groove; 6. Column; 61. Sleeve; 62. Limit rod. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] The utility model provides Figure 1-5 A double-opening flap door shown in the figure comprises a valve seat 1, which is made of a solid material and can effectively withstand water pressure to ensure the service life of the flap door. A No. 1 valve plate 2 and a No. 2 valve plate 3 are respectively arranged on both sides of the interior of the front end pipeline of the valve seat 1. The No. 1 valve plate 2 and the No. 2 valve plate 3 are symmetrical. The No. 1 valve plate 2 and the No. 2 valve plate 3 are symmetrically designed to effectively prevent external water from flowing back and ensure the normal operation of the drainage system. The No. 1 valve plate 2 and the No. 2 valve plate 3 are made of materials such as stainless steel or cast iron and are manufactured according to the shape and design requirements of the valve seat 1. A mounting frame 5 is arranged at the front end top of the valve seat 1 and at a position corresponding to the top ends of the No. 1 valve plate 2 and the No. 2 valve plate 3;

[0029] The mounting frame 5 comprises:

[0030] The electric telescopic arm 51 controls the opening and closing of the No. 1 valve plate 2 and the No. 2 valve plate 3 by controlling the driving seat 52 through the electric telescopic arm 51. The electric telescopic arm 51 is fixedly installed in the rear end of the mounting frame 5. The driving seat 52 is arranged in the front end of the mounting frame 5. The rear end of the driving seat 52 is fixedly connected to the output end of the electric telescopic arm 51.

[0031] A column 6 is vertically fixedly installed in the middle position of the front end pipeline port of the valve seat 1 and located on the outer side of the No. 1 valve plate 2 and the No. 2 valve plate 3. The column 6 is used to install the sleeve 61, thereby keeping the limit rod 62 on the sleeve 61 at a certain position.

[0032] Furthermore, in the above technical solution, sleeves 61 are fixedly installed on the upper and lower ends of the column 6, and limiting rods 62 are fixedly installed on the outer walls of both sides of the two sleeves 61. The limiting rods 62 limit the expansion angle of the No. 1 valve plate 2 and the No. 2 valve plate 3 to prevent the No. 1 valve plate 2 and the No. 2 valve plate 3 from fitting together. There is a certain angle between the limiting rods 62 on both sides of the same sleeve 61, and the limiting rods 62 are made of metal material.

[0033] Furthermore, in the above technical scheme, a No. 1 shaft sleeve 21 is fixedly installed on the upper and lower ends of a vertical side of the No. 1 valve plate 2, and a No. 2 shaft sleeve 31 is fixedly installed on the middle position of a vertical side of the No. 2 valve plate 3. The No. 1 valve plate 2 and the No. 2 valve plate 3 are spliced ​​on opposite sides, and the upper and lower ends of the No. 2 shaft sleeve 31 are rotatably connected to the opposite ends of the two No. 1 shaft sleeves 21. Through the rotatable connection between the No. 1 shaft sleeve 21 and the No. 2 shaft sleeve 31, the No. 1 valve plate 2 and the No. 2 valve plate 3 are spliced ​​together to form a complete valve plate, thereby being able to achieve sealing of the valve seat 1 pipeline.

[0034] Furthermore, in the above technical solution, a No. 1 connecting seat 22 is fixedly installed on the top of the No. 1 sleeve 21 at the upper end of the No. 1 valve plate 2, and a shaft rod 33 is fixedly installed on the upper and lower ends of the No. 2 sleeve 31. The upper end of the shaft rod 33 passes through the No. 1 sleeve 21 and the No. 1 connecting seat 22 at the upper end of the No. 1 valve plate 2, and a No. 2 connecting seat 32 is fixedly installed on the top of the shaft rod 33. The shaft rod 33 enables the No. 2 sleeve 31 to be rotatably connected with the No. 1 sleeve 21, thereby enabling the No. 1 valve plate 2 and the No. 2 valve plate 3 to rotate synchronously to open or close.

[0035] Furthermore, in the above technical scheme, the structure of the No. 1 connecting seat 22 and the No. 2 connecting seat 32 is the same, a protrusion is provided on one side of the No. 1 connecting seat 22, and the No. 1 connecting seat 22 and the No. 2 connecting seat 32 are symmetrically distributed in the up and down directions. A push rod 4 is fixedly installed at the bottom end of the protrusion of the No. 1 connecting seat 22, and a push rod 4 is fixedly installed at the top end of the protrusion of the No. 2 connecting seat 32. The movement of the driving seat 52 drives the movement of the two push rods 4, thereby driving the rotation of the corresponding No. 1 connecting seat 22 and the No. 2 connecting seat 32, thereby controlling the synchronous rotation of the corresponding No. 1 valve plate 2 and the No. 2 valve plate 3, so that they are expanded or closed.

[0036] Furthermore, in the above technical solution, a cross-shaped notch is provided on the driving seat 52, and the push rods 4 of the No. 1 connecting seat 22 and the No. 2 connecting seat 32 are respectively in the notches on both sides of the driving seat 52, and a part of the upper end of the shaft rod 33 is located in the middle notch of the driving seat 52. The driving seat 52 is located between the No. 1 connecting seat 22 and the No. 2 connecting seat 32. The design of the cross-shaped notch on the driving seat 52 can correspond to the shaft rod 33 and the two push rods 4.

[0037] Furthermore, in the above technical solution, sliders 53 are fixedly installed on both sides of the driving seat 52, and guide grooves 54 are opened on the inner walls on both sides of the mounting frame 5. The driving seat 52 is slidably connected to the guide grooves 54 on the inner walls on both sides of the mounting frame 5 through the sliders 53 on both sides. Through the connection between the guide grooves 54 and the sliders 53, the driving seat 52 is installed in the mounting frame 5 to maintain stable movement of the driving seat 52.

[0038] The double-opening flap door provided by the utility model has the following working process when in use:

[0039] When opening the valve plate of the flap door, if the water pressure in the delivery pipeline is sufficient, the electric telescopic arm 51 is in a power-off state, and the electric telescopic arm 51 can be extended and retracted under the action of external force. Then, under the action of the water pressure inside the pipeline, the No. 1 valve plate 2 and the No. 2 valve plate 3 are affected by the water pressure and automatically rotate to the outside to open. When the No. 1 valve plate 2 and the No. 2 valve plate 3 are unfolded to a certain angle, they are restricted by the limit rod 62 on the column 6, so that the No. 1 valve plate 2 and the No. 2 valve plate 3 are maintained at a certain angle position. In order to prevent the outside of the No. 1 valve plate 2 and the No. 2 valve plate 3 from constantly colliding with the front end of the limit rod 62, causing damage to the valve plate, rubber pads can be installed on the outer walls of the No. 1 valve plate 2 and the No. 2 valve plate 3, and the front end of each limit rod 62, so as to reduce the impact force between the valve plate and the limit rod 62.

[0040] When the valve plate needs to be closed, that is, when the external water pressure of the No. 1 valve plate 2 and the No. 2 valve plate 3 is greater than the internal water pressure, the No. 1 valve plate 2 and the No. 2 valve plate 3 rotate inwardly under the action of the external water pressure, and then the No. 1 valve plate 2 and the No. 2 valve plate 3 are closed. If the flap door cannot be automatically opened by the water pressure, the electric telescopic arm 51 is started, and the electric telescopic arm 51 controls the driving seat 52 to move toward the tail end of the mounting frame 5. When the driving seat 52 moves toward the tail end of the mounting frame 5, it drives the No. 1 connecting seat 22 and the No. 2 connecting seat 32 connected by the two push rods 4 to rotate, thereby controlling the No. 1 valve plate 2 and the No. 2 valve plate 3 to rotate and open. When the valve plate needs to be closed, the electric telescopic arm 51 controls the driving seat 52 to move toward the front end of the mounting frame 5, and then the two push rods 4 control the No. 1 connecting seat 22 and the No. 2 connecting seat 32 to drive the No. 1 valve plate 2 and the No. 2 valve plate 3 to rotate and close, thereby avoiding the situation where the valve plate is subjected to excessive pressure when the valve plate cannot open and close automatically normally, resulting in damage to the valve plate.

[0041] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A double-opening flap door, comprising a valve seat (1), characterized in that: A first valve plate (2) and a second valve plate (3) are respectively arranged on both sides of the interior of the front end pipeline of the valve seat (1), the first valve plate (2) and the second valve plate (3) are symmetrical, and a mounting frame (5) is arranged at the top of the front end of the valve seat (1) and at a position corresponding to the top ends of the first valve plate (2) and the second valve plate (3); The mounting frame (5) comprises: The electric telescopic arm (51) is fixedly installed transversely inside the rear end of the mounting frame (5), and a driving seat (52) is arranged inside the front end of the mounting frame (5), and the rear end of the driving seat (52) is fixedly connected to the output end of the electric telescopic arm (51); A column (6) is vertically fixedly installed in the middle of the front end pipeline port of the valve seat (1) and located outside the first valve plate (2) and the second valve plate (3).

2. A double-opening flap door according to claim 1, characterized in that: The upper and lower ends of the column (6) are both fixedly mounted with sleeves (61), and the outer walls on both sides of the two sleeves (61) are both fixedly mounted with limit rods (62), and the limit rods (62) on both sides of the same sleeve (61) have a certain angle between them, and the limit rods (62) are made of metal material.

3. The double-opening flap door according to claim 1, characterized in that: A No. 1 shaft sleeve (21) is fixedly mounted on the upper and lower ends of one vertical side of the No. 1 valve plate (2), and a No. 2 shaft sleeve (31) is fixedly mounted on the middle position of one vertical side of the No. 2 valve plate (3). The No. 1 valve plate (2) and the No. 2 valve plate (3) are spliced ​​at opposite sides, and the upper and lower ends of the No. 2 shaft sleeve (31) are rotatably connected to the opposite ends of the two No. 1 shaft sleeves (21).

4. A double-opening flap door according to claim 3, characterized in that: A No. 1 connecting seat (22) is fixedly mounted on the top end of the No. 1 shaft sleeve (21) at the upper end of the No. 1 valve plate (2), and a shaft rod (33) is fixedly mounted on the upper and lower ends of the No. 2 shaft sleeve (31). The upper end of the shaft rod (33) passes through the No. 1 shaft sleeve (21) and the No. 1 connecting seat (22) at the upper end of the No. 1 valve plate (2), and the No. 2 connecting seat (32) is fixedly mounted on the top end of the shaft rod (33).

5. The double-opening flap door according to claim 3, characterized in that: The structure of the No. 1 connecting seat (22) is the same as that of the No. 2 connecting seat (32). A protrusion is provided on one side of the No. 1 connecting seat (22). The No. 1 connecting seat (22) and the No. 2 connecting seat (32) are symmetrically distributed in the up-down direction. A push rod (4) is fixedly installed at the bottom end of the protrusion of the No. 1 connecting seat (22), and a push rod (4) is fixedly installed at the top end of the protrusion of the No. 2 connecting seat (32).

6. The double-opening flap door according to claim 4, characterized in that: The driving seat (52) is provided with a cross-shaped notch, the push rods (4) of the No. 1 connecting seat (22) and the No. 2 connecting seat (32) are respectively in the notches on both sides of the driving seat (52), a part of the upper end of the shaft rod (33) is located in the middle notch of the driving seat (52), and the driving seat (52) is located between the No. 1 connecting seat (22) and the No. 2 connecting seat (32).

7. The double-opening flap door according to claim 1, characterized in that: Slide blocks (53) are fixedly mounted on both sides of the driving seat (52), guide grooves (54) are provided on the inner walls on both sides of the mounting frame (5), and the driving seat (52) is slidably connected to the guide grooves (54) on the inner walls on both sides of the mounting frame (5) via the slide blocks (53) on both sides.

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