Fish releasing swing valve capable of being quickly opened and closed

Abstract

The utility model discloses a fish releasing swing valve capable of being rapidly opened and closed. The fish releasing swing valve comprises a valve body, a valve plate and an oil cylinder. According to the utility model, the split type valve plate is matched with the scissor type hinged linkage mechanism, and the opening and closing stroke of the valve plate is obviously shortened by utilizing the synchronous reverse swinging of the symmetrical swing arms under the driving of the oil cylinder, so that the quick opening and closing are realized; the problem of response lag caused by long-stroke movement of a single valve plate of a traditional swing valve is solved, and the swing valve is particularly suitable for fish migration channel valve scenes with high requirements for opening and closing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a quick-opening and closing fish release valve. Background Technology

[0002] In hydraulic engineering, the swing valve used for releasing fish upstream is a specially designed fluid control device, mainly used to regulate water flow and control the release speed in fish migration channels (such as fish lift systems). Existing technologies typically employ swing valve drive devices including hydraulic cylinders, electric actuators, and servo motors. These drive devices drive the valve plate to swing, precisely controlling the swing speed and angle. For example, a swing valve actuator disclosed in existing technology includes a housing containing a motor and a rotating shaft arranged side-by-side. The outer wall of the rotating shaft has an annular protrusion, and the housing has a groove to support and limit the fall of the annular protrusion. The top of the rotating shaft is equipped with... The device has a fan-shaped plate, with the bottom end of the rotating shaft protruding out of the housing and connected to an external connecting rod. The end of the fan-shaped plate is connected to the rotating shaft. The arc-shaped side of the fan-shaped plate is provided with several vertically extending and equally spaced toothed grooves. A gear that meshes with the toothed grooves is provided on the drive shaft of the motor. A circuit board is provided above the motor. The circuit board is fixed to the top surface inside the housing and electrically connected to the motor. A stroke sensor is provided on the swing path of the fan-shaped plate in the housing. The stroke sensor is electrically connected to the circuit board. This disclosed technology drives the rotating shaft to rotate by rotating the gear that meshes with the toothed grooves on the fan-shaped plate through the motor, so that the swing position of the externally connected valve disc is accurate and the angle is adjustable.

[0003] However, when existing swing valves, including the aforementioned disclosed technologies, are applied to fish migration channels, the opening and closing speed of their valve plates still needs to be further improved. Therefore, it is necessary to optimize and improve the structure of the swing valve. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick-opening and closing fish-releasing swing valve.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a quick-opening fish-releasing swing valve, comprising a valve body, a valve plate, and a hydraulic cylinder. The valve body has a valve cavity on its inner wall. A front cover and a rear cover are fixedly connected to the front and rear side walls of the valve body, respectively. The inner walls of the front and rear covers are respectively provided with a front opening and a rear opening that are through-type. The valve plate consists of a first valve disc and a second valve disc distributed left and right. A second pivot pin is fixedly connected to the opposite side of the front and rear covers and above the front and rear openings. The second pivot pin is rotatably connected to a first lower swing arm and a second lower swing arm along its outer wall. The lower end of the lower swing arm is fixedly connected to the upper end of the first valve disc and the upper end of the second valve disc, respectively. The oil cylinder is fixedly connected to the upper wall of the valve body. The end of the oil cylinder extension shaft passes through the upper wall of the valve body and extends into the valve cavity. The end of the oil cylinder extension shaft that extends into the valve cavity is rotatably connected to the first upper swing arm and the second upper swing arm. The end of the first upper swing arm away from the oil cylinder extension shaft is rotatably connected to the upper end of the first lower swing arm through the first connecting pin. The end of the second upper swing arm away from the oil cylinder extension shaft is rotatably connected to the upper end of the second lower swing arm through the second connecting pin. The first lower swing arm, the second lower swing arm and the second pivot pin constitute a scissor-type hinge linkage mechanism.

[0006] As a further description of the above technical solution:

[0007] The first valve disc and the second valve disc are respectively provided with a plug-in block and a plug-in groove on opposite sides, and the outer dimensions of the plug-in block are adapted to the inner cavity of the plug-in groove.

[0008] As a further description of the above technical solution:

[0009] The inner wall of the insertion slot is provided with a second sealing element, and when the first valve disc and the second valve disc are combined, the insertion block and the insertion slot are sealed by the second sealing element.

[0010] As a further description of the above technical solution:

[0011] One end of the oil cylinder that extends into the valve chamber is fixedly connected to a connector. The inner wall of the connector is provided with a first pivot pin that runs through the front and back. The end of the first upper swing arm that is away from the first lower swing arm is rotatably connected to the front end of the first pivot pin. The end of the second upper swing arm that is away from the second lower swing arm is rotatably connected to the rear end of the first pivot pin.

[0012] As a further description of the above technical solution:

[0013] A first sealing element is provided between the front cover and the valve body, between the rear cover and the valve body, between the valve body and the cylinder extension shaft, between the valve plate and the front cover, and between the valve plate and the rear cover.

[0014] As a further description of the above technical solution:

[0015] The front cover and valve body, as well as the rear cover and valve body, are secured together by multiple sets of locking screws.

[0016] As a further description of the above technical solution:

[0017] A mounting base is fixedly connected to the upper wall of the valve body, and the oil cylinder is fixedly connected to the upper wall of the mounting base. The oil cylinder is fixedly connected to the valve body through the mounting base.

[0018] This utility model has the following beneficial effects:

[0019] Compared with existing technologies, this fast-switching fish release swing valve, through a split valve plate and a scissor-type hinge linkage mechanism, utilizes the synchronous reverse swing of symmetrical swing arms under the drive of a hydraulic cylinder to significantly shorten the opening and closing stroke of the valve plate, thereby achieving rapid opening and closing. It solves the response lag problem caused by the long stroke movement of a single valve plate in traditional swing valves, and is especially suitable for fish migration channel valve scenarios where high switching efficiency is required. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of a quick-opening fish-releasing swing valve proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the back of the overall structure of a quick-opening fish-releasing swing valve proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of a quick-opening fish-releasing swing valve proposed in this utility model.

[0023] Figure 4 This is a partial cross-sectional view of the internal structure of the second valve disc of a quick-opening fish-releasing swing valve proposed in this utility model.

[0024] Legend:

[0025] 1. Valve body; 101. Valve chamber; 2. Front cover; 201. Front opening; 3. Rear cover; 301. Rear opening; 4. Valve plate; 401. First valve disc; 4011. Insertion block; 402. Second valve disc; 4021. Insertion groove; 5. Locking screw; 6. Hydraulic cylinder; 7. Mounting base; 8. Connector; 9. First pivot pin; 10. Second pivot pin; 11. First upper swing arm; 12. First connecting pin; 13. First lower swing arm; 14. Second upper swing arm; 15. Second connecting pin; 16. Second lower swing arm; 17. First seal; 18. Second seal. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1 to 4 The present invention provides a quick-opening fish release valve, comprising a valve body 1, a valve plate 4, and a hydraulic cylinder 6. The valve body 1 has a valve cavity 101 on its inner wall. The front and rear side walls of the valve body 1 are respectively fixedly connected to a front cover 2 and a rear cover 3. The inner walls of the front cover 2 and the rear cover 3 are respectively provided with a front opening 201 and a rear opening 301 that are through the front and rear. The front cover 2 and the valve body 1, as well as the rear cover 3 and the valve body 1, are locked together by multiple sets of locking screws 5.

[0028] In order to shorten the opening and closing stroke of the valve plate 4 and improve the opening and closing speed, the valve plate 4 is composed of a first valve disc 401 and a second valve disc 402 distributed on the left and right. The first valve disc 401 and the second valve disc 402 are respectively provided with a plug block 4011 and a plug groove 4021 on opposite sides. The outer dimensions of the plug block 4011 are adapted to the inner cavity of the plug groove 4021. A second sealing element 18 is provided on the inner side wall of the plug groove 4021. When the first valve disc 401 and the second valve disc 402 are combined, the plug block 4011 and the plug groove 4021 are sealed by the second sealing element 18.

[0029] When the cylinder 6 drives the first valve disc 401 and the second valve disc 402 to move towards each other, the plug block 4011 is inserted in a straight line along the short path of the plug groove 4021, reducing the time spent on the long stroke swing of the traditional single valve disc. At the same time, the second seal 18 is deformed under pressure to fill the plug gap, preventing fluid from leaking from the middle of the valve plate 4.

[0030] In order to achieve synchronous and reverse movement of the two valve discs, a second pivot pin 10 is fixedly connected to the opposite side of the front cover 2 and the rear cover 3 and above the front opening 201 and the rear opening 301. The second pivot pin 10 is rotatably connected to the outer wall of the axis of the first lower swing arm 13 and the second lower swing arm 16. The lower ends of the first lower swing arm 13 and the second lower swing arm 16 are fixedly connected to the upper end of the first valve disc 401 and the upper end of the second valve disc 402, respectively. The first lower swing arm 13, the second lower swing arm 16 and the second pivot pin 10 constitute a scissor-type hinge linkage mechanism.

[0031] When the cylinder 6 pushes the first upper swing arm 11 and the second upper swing arm 14 to rotate around the first pivot pin 9, the first lower swing arm 13 and the second lower swing arm 16 swing in opposite directions with the second pivot pin 10 as the fulcrum, driving the first valve disc 401 and the second valve disc 402 to open and close symmetrically, eliminating the motion lag caused by the unidirectional swing of the traditional swing valve.

[0032] To ensure efficient transmission of the driving force of the hydraulic cylinder 6 to the valve plate 4, the hydraulic cylinder 6 is fixedly connected to the upper wall of the valve body 1. A mounting base 7 is fixedly connected to the upper wall of the valve body 1, and the hydraulic cylinder 6 is fixedly connected to the upper wall of the mounting base 7. The hydraulic cylinder 6 is fixedly connected to the valve body 1 via the mounting base 7. The end of the hydraulic cylinder 6's extension shaft passes through the upper wall of the valve body 1 and extends into the valve cavity 101. A first upper swing arm 11 and a second upper swing arm 14 are rotatably connected to one end of the hydraulic cylinder 6's extension shaft that extends into the valve cavity 101. The end of the first upper swing arm 11 away from the hydraulic cylinder 6's extension shaft is connected via a first connecting arm... The pin 12 is rotatably connected to the upper end of the first lower swing arm 13. The end of the second upper swing arm 14 away from the extension shaft of the cylinder 6 is rotatably connected to the upper end of the second lower swing arm 16 through the second connecting pin 15. The end of the cylinder 6 that extends into the valve chamber 101 is fixedly connected to the connector 8. The inner wall of the connector 8 is provided with a first pivot pin 9 that runs through the front and back. The end of the first upper swing arm 11 away from the first lower swing arm 13 is rotatably connected to the front end of the first pivot pin 9. The end of the second upper swing arm 14 away from the second lower swing arm 16 is rotatably connected to the rear end of the first pivot pin 9.

[0033] When the cylinder 6 extends and retracts, the first upper swing arm 11 and the second upper swing arm 14 rotate synchronously around the first pivot pin 9, and transmit the driving force to the scissor-type hinge linkage mechanism through the first connecting pin 12 and the second connecting pin 15, ensuring that the movement trajectory of the double valve disc is precise and controllable.

[0034] To prevent fluid from leaking through the assembly gap, a first sealing element 17 is provided between the front cover 2 and the valve body 1, between the rear cover 3 and the valve body 1, between the valve body 1 and the extension shaft of the oil cylinder 6, between the valve plate 4 and the front cover 2, and between the valve plate 4 and the rear cover 3.

[0035] When the valve body 1 is subjected to water pressure, multiple sets of first seals 17 form a static sealing barrier between the valve body 1 and the front cover 2 and the rear cover 3, and at the same time form a dynamic seal on the sliding contact surface between the valve plate 4 and the front cover 2 and the rear cover 3, so as to achieve full-circumference anti-leakage of the valve.

[0036] Working principle: When the hydraulic cylinder 6 drives the first valve disc 401 and the second valve disc 402 to move towards each other, the insertion block 4011 is inserted linearly along the short path of the insertion groove 4021, reducing the long stroke swing time of the traditional swing valve. At the same time, the second seal 18 is deformed under pressure to fill the insertion gap, preventing fluid leakage from the middle of the valve plate 4. When the hydraulic cylinder 6 pushes the first upper swing arm 11 and the second upper swing arm 14 to rotate around the first pivot pin 9, the first lower swing arm 13 and the second lower swing arm 16 swing in opposite directions with the second pivot pin 10 as the fulcrum, driving the first valve disc 401 and the second valve disc 402 to open and close symmetrically. This eliminates the motion lag caused by the unidirectional swing of traditional swing valves; when the cylinder 6 extends and retracts, the first upper swing arm 11 and the second upper swing arm 14 rotate synchronously around the first pivot pin 9, and transmit the driving force to the scissor-type hinge linkage mechanism through the first connecting pin 12 and the second connecting pin 15, ensuring that the movement trajectory of the double valve discs is precise and controllable; when the valve body 1 is subjected to water pressure, the first sealing element 17 forms a static sealing barrier between the valve body 1 and the front cover 2 and the rear cover 3, and at the same time forms a dynamic seal on the sliding contact surface between the valve plate 4 and the front cover 2 and the rear cover 3, realizing full-circumference anti-leakage of the valve.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-opening and closing fish-releasing swing valve, characterized in that: The valve body (1), valve plate (4), and cylinder (6) are included. The valve body (1) has a valve cavity (101) on its inner wall. The front and rear side walls of the valve body (1) are fixedly connected to a front cover (2) and a rear cover (3). The inner walls of the front cover (2) and the rear cover (3) are respectively provided with a front opening (201) and a rear opening (301) that are through the front and rear. The valve plate (4) is composed of a first valve disc (401) and a second valve disc (402) that are distributed left and right. A second pivot pin (10) is fixedly connected to the front cover (2) and the rear cover (3) on the opposite side and above the front opening (201) and the rear opening (301). The second pivot pin (10) is rotatably connected to a first lower swing arm (13) and a second lower swing arm (16) on its outer wall. The lower ends of the first lower swing arm (13) and the second lower swing arm (16) are respectively connected to the first valve disc (401) and the second lower swing arm (6). The upper end of the first upper arm (401) and the upper end of the second valve disc (402) are fixedly connected. The oil cylinder (6) is fixedly connected to the upper wall of the valve body (1). The end of the extension shaft of the oil cylinder (6) passes through the upper wall of the valve body (1) and extends into the valve cavity (101). The end of the extension shaft of the oil cylinder (6) extending into the valve cavity (101) is rotatably connected to the first upper swing arm (11) and the second upper swing arm (14). The end of the first upper swing arm (11) away from the extension shaft of the oil cylinder (6) is rotatably connected to the upper end of the first lower swing arm (13) through the first connecting pin (12). The end of the second upper swing arm (14) away from the extension shaft of the oil cylinder (6) is rotatably connected to the upper end of the second lower swing arm (16) through the second connecting pin (15). The first lower swing arm (13), the second lower swing arm (16) and the second pivot pin (10) constitute a scissor-type hinge linkage mechanism.

2. The quick-opening and closing fish-releasing valve according to claim 1, characterized in that: The first valve disc (401) and the second valve disc (402) are respectively provided with a plug block (4011) and a plug groove (4021) on opposite sides, and the external dimensions of the plug block (4011) are adapted to the inner cavity of the plug groove (4021).

3. The quick-opening and closing fish-releasing valve according to claim 2, characterized in that: The inner wall of the insertion groove (4021) is provided with a second sealing element (18). When the first valve disc (401) and the second valve disc (402) are combined, the insertion block (4011) and the insertion groove (4021) are sealed by the second sealing element (18).

4. The quick-opening and closing fish-releasing valve according to claim 1, characterized in that: One end of the oil cylinder (6) that extends into the valve chamber (101) is fixedly connected to a connector (8). The inner wall of the connector (8) is provided with a first pivot pin (9) that runs through the front and back. The end of the first upper swing arm (11) that is away from the first lower swing arm (13) is rotatably connected to the front end of the first pivot pin (9). The end of the second upper swing arm (14) that is away from the second lower swing arm (16) is rotatably connected to the rear end of the first pivot pin (9).

5. A quick-opening fish-releasing swing valve according to claim 1, characterized in that: A first sealing element (17) is provided between the front cover (2) and the valve body (1), between the rear cover (3) and the valve body (1), between the valve body (1) and the extension shaft of the oil cylinder (6), between the valve plate (4) and the front cover (2), and between the valve plate (4) and the rear cover (3).

6. A quick-opening fish-releasing swing valve according to claim 1, characterized in that: The front cover (2) and valve body (1) and the rear cover (3) and valve body (1) are locked together by multiple sets of locking screws (5).

7. A quick-opening fish-releasing swing valve according to claim 1, characterized in that: The valve body (1) is fixedly connected to the upper wall of the mounting base (7), and the oil cylinder (6) is fixedly connected to the upper wall of the mounting base (7). The oil cylinder (6) is fixedly connected to the valve body (1) through the mounting base (7).

Images