Self-locking device based on flap valve

Abstract

The utility model provides a self-locking device based on a flap valve, which relates to the technical field of water conservancy and hydropower engineering and comprises a frame, a gravity flap valve cover plate is arranged on the front surface of the frame, a base is fixedly connected to the bottom of the frame, and a self-locking component is fixedly connected to the bottom of the base. And the self-locking assembly comprises a fixing seat, the top of the fixing seat is fixedly connected with the bottom of the base, and a rotating arm is arranged on the inner surface of the fixing seat. According to the flap valve, when the flap valve is closed, the closing rod is fixedly connected to the bottom of the gravity flap valve cover plate, and the gravity of the gravity flap valve cover plate drives the closing rod to extrude the rotating arm, so that the rotating arm is stressed to rotate upwards to avoid, and the rotating arm resets under the action of the gravity after the closing rod is embedded into the inner side of the fixed seat, so that the closing rod is clamped; the flap valve is simple in overall structure, self-locking can be achieved without external power driving, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower engineering technology, and in particular to a self-locking device based on a flap gate. Background Technology

[0002] According to the material, the flap gates used in my country can be divided into stainless steel, cast iron, structural steel, PPR composite materials, etc. The main types include suspended flap gates, floating box flap gates, flat plate flap gates, sleeve flap gates, energy-saving side-opening flap gates, etc., which are suitable for media such as river water, sea water, domestic sewage, and industrial wastewater.

[0003] In the existing technology, there are gravity-type and hydraulic-type flap gates in the water conservancy field. They close by their own weight and by hydraulic pressure, and mainly rely on screw-type gate openers to drive the valves for self-locking, which is time-consuming, labor-intensive and costly. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing gravity flap gates mainly rely on screw-driven valves for self-locking, which is time-consuming, labor-intensive, and costly. Therefore, this invention proposes a self-locking device based on flap gates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a self-locking device based on a flap door, comprising: a frame, wherein a gravity flap door cover plate is provided on the front surface of the frame, a base is fixedly connected to the bottom of the frame, and a self-locking component is fixedly connected to the bottom of the base; the self-locking component includes a fixed seat, wherein the top of the fixed seat is fixedly connected to the bottom of the base, a rotating arm is provided on the inner surface of the fixed seat, and a pin is fixedly connected to the inner surface of the rotating arm, wherein the pin is rotatably connected to the fixed seat.

[0006] Preferably, a lifting lug is fixedly connected to the front surface of the gravity flap door cover, and a closing rod is fixedly connected to the bottom of the gravity flap door cover.

[0007] Preferably, the bottom of the rotating arm is arc-shaped, and the closing rod is matched with the rotating arm.

[0008] Preferably, a wedge block is fixedly connected to one side of the inner surface of the fixed base near the front surface, and a wedge plate is fixedly connected to one side of the outer surface of the rotating arm, with the wedge plate and the wedge block being matched.

[0009] Preferably, a stop block is fixedly connected to one side of the inner surface of the fixed base away from the inclined block, and the stop block is matched with the rotating arm.

[0010] Preferably, a top seat is fixedly connected to the top of the frame, and a fixed shaft is fixedly connected to the inner surface of the top seat.

[0011] Preferably, rotating blocks are fixedly connected to the outer surfaces of both sides of the gravity door cover near the top, and the inner surfaces of the two rotating blocks are rotatably connected to the outer surface of the fixed shaft.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, when the flap door is closed, a closing rod is fixedly connected to the bottom of the gravity flap door cover plate. The weight of the gravity flap door cover plate drives the closing rod to squeeze the rotating arm, causing the rotating arm to rotate upward to avoid the closing rod. After the closing rod is embedded in the inner side of the fixed seat, the rotating arm resets under its own weight and locks the closing rod, thereby realizing the self-locking of the flap door. The overall structure is simple, does not require external power to drive the self-locking, and has a low cost.

[0014] 2. In this utility model, when the flap gate is running, that is, when the external power pulls the lifting lugs and self-locking is not required, the rotating arm is rotated until the stop block, where the inclined plate and the inclined block interlock and lock together, so that the rotating arm is always open and the flap gate can operate normally, which is highly practical. Attached Figure Description

[0015] Figure 1 A side view of a self-locking device based on a flap gate is provided for this utility model;

[0016] Figure 2 This utility model presents a schematic diagram of the self-locking component structure of a self-locking device based on a flap door.

[0017] Legend: 1. Frame; 2. Top seat; 3. Fixed shaft; 4. Rotating block; 5. Gravity flap door cover; 6. Lifting lug; 7. Closing rod; 8. Base; 9. Self-locking assembly; 901. Fixed seat; 902. Stop block; 903. Inclined block; 904. Pin shaft; 905. Rotating arm; 906. Inclined plate. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1: As Figures 1-2As shown, this utility model provides a self-locking device based on a door flap, including: a frame 1, a gravity door flap cover 5 disposed on the front surface of the frame 1, a base 8 fixedly connected to the bottom of the frame 1, and a self-locking component 9 fixedly connected to the bottom of the base 8; the self-locking component 9 includes a fixed seat 901, the top of the fixed seat 901 fixedly connected to the bottom of the base 8, a rotating arm 905 disposed on the inner surface of the fixed seat 901, a pin 904 fixedly connected to the inner surface of the rotating arm 905, the pin 904 being rotatably connected to the fixed seat 901, and a lifting lug 6 fixedly connected to the front surface of the gravity door flap cover 5. A closing rod 7 is fixedly connected to the bottom of the rotating arm 905. The bottom of the rotating arm 905 is arc-shaped. The closing rod 7 and the rotating arm 905 are matched. A wedge block 903 is fixedly connected to one side of the inner surface of the fixed seat 901 near the front surface. A wedge plate 906 is fixedly connected to one side of the outer surface of the rotating arm 905. The wedge plate 906 and the wedge block 903 are matched. A top seat 2 is fixedly connected to the top of the frame 1. A fixed shaft 3 is fixedly connected to the inner surface of the top seat 2. Rotating blocks 4 are fixedly connected to the outer surfaces of both sides of the gravity door cover 5 near the top. The inner surfaces of the two rotating blocks 4 are rotatably connected to the outer surface of the fixed shaft 3.

[0021] The overall effect of Embodiment 1 is that, when the door-locking device is in use, a top seat 2 is fixedly connected to the top of the frame 1, and a fixed shaft 3 is fixedly connected to its inner surface. The fixed shaft 3 extends to both sides, and rotating blocks 4 are fixedly connected to both sides of the gravity door-locking cover 5 near the top. When the gravity door-locking cover 5 moves downward under its own weight, it will rotate around the fixed shaft 3 and fit against the front surface of the frame 1. Since a fixed seat 901 is fixedly connected to the bottom slope of the frame 1, and a rotating arm 905 is provided inside it, the rotating arm 905... 05 is rotatably connected within the fixed base 901 via a pin 904. When the gravity-operated door cover 5 closes, the closing rod 7, welded and fixed to the gravity-operated door cover 5, closes along with it and presses against the rotating arm 905, causing the rotating arm 905 to rotate upwards to avoid it. When the rotating arm 905 rotates to the point where the closing rod 7 is embedded inside the fixed base 901, the rotating arm 905, under its own weight, locks the closing rod 7, thus achieving self-locking of the door. The overall structure is simple, requires no external power to drive the self-locking, and has a low cost.

[0022] Example 2: As Figures 1-2 As shown, a stop block 902 is fixedly connected to one side of the inner surface of the fixed base 901 away from the inclined block 903. The stop block 902 is matched with the rotating arm 905.

[0023] The effect achieved by the entire embodiment 2 is that when the flap door is running, that is, when the external power pulls the lifting lug 6 and self-locking is not required, the rotating arm 905 is rotated until the stop block 902, and the inclined plate 906 and the inclined block 903 are engaged and locked together, so as to realize the constant opening of the rotating arm 905 and realize the normal operation of the flap door, which is highly practical.

[0024] Working principle: When the door flapping self-locking device is in use, a top seat 2 is fixedly connected to the top of the frame 1, and a fixed shaft 3 is fixedly connected to its inner surface. The fixed shaft 3 extends to both sides, and rotating blocks 4 are fixedly connected to both sides of the gravity door flapping cover 5 near the top. When the gravity door flapping cover 5 moves downward under its own weight, it will rotate around the fixed shaft 3 and fit against the front surface of the frame 1. Since a fixed seat 901 is fixedly connected to the bottom inclined surface of the frame 1, a rotating arm 905 is set inside it. The rotating arm 905 is rotatably connected to the fixed seat 901 through a pin 904. When the gravity door flapping cover 5 is closed, the closing rod 7, which is welded and fixed to the gravity door flapping cover 5, is engaged. The door flap cover 5 closes due to gravity and is pressed against the rotating arm 905, causing the rotating arm 905 to rotate upwards to avoid it. When the rotating arm 905 rotates to the point where the closing rod 7 is embedded inside the fixed seat 901, the rotating arm 905, under its own weight, locks the closing rod 7, thus achieving self-locking of the door flap. The overall structure is simple, requiring no external power to drive the self-locking, and has a low cost. When the door flap is running, i.e., when external power is used to pull the lifting lug 6 and self-locking is not required, the rotating arm 905 is rotated until it reaches the stop block 902, where the inclined plate 906 and the inclined block 903 engage and lock it, achieving the normal opening of the rotating arm 905 and enabling the door flap to operate normally, making it highly practical.

[0025] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A self-locking device based on a flap door, characterized in that, include: A frame (1) is provided with a gravity door cover plate (5) on the front surface of the frame (1), and a base (8) is fixedly connected to the bottom of the frame (1), and a self-locking component (9) is fixedly connected to the bottom of the base (8). The self-locking assembly (9) includes a fixed base (901), the top of which is fixedly connected to the bottom of the base (8), and a rotating arm (905) is provided on the inner surface of the fixed base (901). A pin (904) is fixedly connected to the inner surface of the rotating arm (905), and the pin (904) is rotatably connected to the fixed base (901).

2. The self-locking device based on a flap gate according to claim 1, characterized in that: The front surface of the gravity flap door cover (5) is fixedly connected with a lifting lug (6), and the bottom of the gravity flap door cover (5) is fixedly connected with a closing rod (7).

3. The self-locking device based on a flap gate according to claim 2, characterized in that: The bottom of the rotating arm (905) is arc-shaped, and the closing rod (7) is matched with the rotating arm (905).

4. The self-locking device based on a flap gate according to claim 3, characterized in that: An inclined block (903) is fixedly connected to one side of the inner surface of the fixed base (901) near the front surface, and an inclined plate (906) is fixedly connected to one side of the outer surface of the rotating arm (905). The inclined plate (906) and the inclined block (903) are matched.

5. The self-locking device based on a flap gate according to claim 4, characterized in that: A stop (902) is fixedly connected to one side of the inner surface of the fixed base (901) away from the inclined block (903), and the stop (902) is matched with the rotating arm (905).

6. The self-locking device based on a flap gate according to claim 5, characterized in that: The top of the frame (1) is fixedly connected to a top seat (2), and the inner surface of the top seat (2) is fixedly connected to a fixed shaft (3).

7. The self-locking device based on a flap gate according to claim 6, characterized in that: Rotating blocks (4) are fixedly connected to the outer surfaces of the gravity door cover (5) near the top, and the inner surfaces of the two rotating blocks (4) are rotatably connected to the outer surface of the fixed shaft (3).

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