Cast steel gate valve

Abstract

The utility model relates to the technical field of cast steel sluice valves, and discloses a cast steel sluice valve which comprises a cut-off mechanism, a connecting mechanism and a main body mechanism, the cut-off mechanism is located on the side wall of the main body mechanism, the connecting mechanism is located at the top end of the cut-off mechanism, the cut-off mechanism comprises a runner pipe, and the inner wall of the runner pipe is in sliding connection with a movable plate. The back of the movable plate is fixedly connected with a connecting rod, and the tail end of the connecting rod is fixedly connected with a sealing gasket. The circulating pipe is slidably connected with the movable plate, the movable plate is fixedly connected with the connecting rod, the connecting rod is fixedly connected with the sealing gaskets, and the sealing gaskets are arranged at the two ends of the circulating pipe, so that the circulating pipe can be sealed through the sealing gaskets, and the situation that foreign matter enters the device to cause blockage before communication can be effectively avoided; and therefore, the smoothness of the device after communication can be improved.

Description

Technical Field

[0001] This utility model relates to the field of cast steel gate valve technology, and in particular to a cast steel gate valve. Background Technology

[0002] Cast steel gate valves are an important type of valve. They are primarily made of cast steel, a material that gives them excellent strength and durability. The working principle of a cast steel gate valve is to control the flow of fluid by raising and lowering a gate. Fluid resistance is low when fully open or fully closed. Its structure is relatively simple. It is widely used in industrial fields, such as pipeline systems in the petroleum, chemical, and water conservancy industries, effectively cutting off or guiding the flow of fluid media, playing a crucial role in controlling the flow rate of media within pipelines. Furthermore, the cast steel material makes it suitable for various working environments, including some corrosive or high-pressure conditions.

[0003] In industrial fluid transport pipeline systems, gate valves are a commonly used type of valve used to control the flow of fluid. During the movement and storage of traditional gate valves, foreign objects may enter the valve body, which may cause blockages inside the valve body and affect the flow performance after installation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a cast steel gate valve.

[0005] This utility model is achieved by the following technical solution: a cast steel gate valve, including a flow-stopping mechanism, a connecting mechanism and a main body mechanism, wherein the flow-stopping mechanism is located on the side wall of the main body mechanism and the connecting mechanism is located at the top of the flow-stopping mechanism;

[0006] The flow-stopping mechanism includes a flow tube, a movable plate is slidably connected to the inner wall of the flow tube, a connecting rod is fixedly connected to the back of the movable plate, and a sealing gasket is fixedly connected to the end of the connecting rod.

[0007] Through the above technical solution, the flow tube is slidably connected to the movable plate, the movable plate is fixedly connected to the connecting rod, and the connecting rod is fixedly connected to the sealing gasket. By setting sealing gaskets at both ends of the flow tube, the flow tube can be sealed by the sealing gaskets, which can effectively prevent foreign objects from entering the device and causing blockage before connection, thereby increasing the smoothness of the device after connection.

[0008] As a further improvement to the above solution, a spring is fitted onto the outer wall of the connecting rod.

[0009] The above technical solution involves a connecting rod and spring. When the flow pipe and connecting pipe are connected, the extension pipe presses against the movable plate, causing it to move backward. As the movable plate moves backward, it presses against the spring. Simultaneously, the connecting rod drives the sealing gasket to move synchronously, creating a gap between the sealing gasket and the stop block, allowing liquid to pass through smoothly. When the flow pipe and connecting pipe are disassembled, the extension pipe separates from the movable plate, and the spring releases its elastic potential energy, causing the movable plate, connecting rod, and sealing gasket to reset. Once the sealing gasket resets, it seals the flow pipe, ensuring that the liquid inside the flow pipe will not leak and cause environmental pollution.

[0010] As a further improvement to the above solution, a stop block is fixedly connected to the inner wall of the flow tube, and a limit block is fixedly connected to the inner wall of the flow tube.

[0011] Through the above technical solution, the flow pipe is fixedly connected to the stop block and the limiting block. By setting the stop block, the spring can be supported, increasing the stability of the device structure. By setting the limiting block at the front end of the movable plate, the movement range of the movable plate can be limited by the limiting block, preventing it from falling off during movement.

[0012] As a further improvement to the above solution, the connecting mechanism includes a connecting tube, a buckle fixedly connected to the top end of the connecting tube, a locking block fixedly connected to the top end of the connecting tube, and an extension tube fixedly connected to the top end of the connecting tube.

[0013] Through the above technical solution, the connecting pipe is fixedly connected with buckles and blocks. By setting buckles and blocks at the top of both the connecting pipe and the flow pipe, and with the buckles and blocks corresponding to each other, the buckles and blocks can be pre-fixed when the flow pipe and the connecting pipe are connected through their cooperation, thereby increasing the flexibility in the connection process.

[0014] As a further improvement to the above solution, a fixing flange is fixedly connected to the outer wall of the connecting pipe, and fixing bolts are fixedly connected to the outer wall of the fixing flange.

[0015] Through the above technical solution, the connecting pipe is fixedly connected to the fixed flange, and the fixed flange is fixedly connected to the fixed bolt. By providing fixed flanges on the outer walls of both the flow pipe and the connecting pipe, the connection between the flow pipe and the connecting pipe can be further strengthened by the fixed flanges and fixed bolts.

[0016] As a further improvement to the above solution, the main structure includes a valve gate body, a valve cover is fixedly connected to the upper surface of the valve gate body, and a bracket is fixedly connected to the upper surface of the valve cover.

[0017] Through the above technical solution, the valve cover is fixedly connected to the valve gate body, and the valve cover is fixedly connected to the bracket. The valve cover can protect the inside of the valve gate body, and the bracket can provide support for the installation of the valve stem.

[0018] As a further improvement to the above solution, a valve stem is threadedly connected to the inner wall of the bracket, a valve body is rotatably connected to the bottom of the valve stem, a handwheel is threadedly connected to the outer wall of the valve stem, and a limit plate is fixedly connected to the top of the valve stem.

[0019] With the above technical solution, the bracket is threadedly connected to the valve stem, the valve stem is rotatably connected to the valve body, and a handwheel is provided for threaded connection of the valve stem. When the valve gate body is closed, the opening and closing of the valve body can be controlled by rotating the handwheel. By setting a limit plate at the top of the valve stem, the stroke of the valve stem can be limited by the limit plate, thereby preventing the valve stem from rising or falling excessively during operation and ensuring the normal operation of the entire valve structure.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] This invention utilizes a sliding connection between a flow tube and a movable plate, with the movable plate fixedly connected to a connecting rod, and the connecting rod fixedly connected to a sealing gasket. Sealing gaskets at both ends of the flow tube ensure a seal. A connecting rod is fitted with a spring. When the flow tube connects to the connecting tube, the extension tube presses against the movable plate, causing it to move backward. This backward movement of the movable plate compresses the spring, and simultaneously, the connecting rod moves the sealing gasket synchronously, creating a gap between the sealing gasket and the stop block, allowing liquid to pass through smoothly. When the flow tube and connecting tube are disassembled, the extension tube separates from the movable plate, and the spring releases its elastic potential energy, causing the movable plate, connecting rod, and sealing gasket to reset. Once the sealing gasket resets, it seals the flow tube, effectively preventing foreign objects from entering the device and causing blockages when the connection is broken. It also prevents leakage of residual liquid inside the device. A limiting block at the front end of the movable plate restricts its movement range and prevents it from falling off.

[0022] This utility model features a connecting pipe with a fixing buckle and a locking block. Both the connecting pipe and the flow pipe have buckles and locking blocks at their top ends, with their positions corresponding to each other. This mutual cooperation of the buckles and locking blocks allows for pre-fixation during the connection process, increasing flexibility. Furthermore, the presence of fixing flanges on the outer walls of both the flow pipe and the connecting pipe, along with fixing bolts, further enhances the robustness of the connection between them. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0024] Figure 2 This is an exploded view of the overall structure of this utility model;

[0025] Figure 3 This is a schematic diagram of the interception mechanism of this utility model.

[0026] Figure 4 This is a schematic diagram of the main structure of the present invention.

[0027] Figure 5 This is a schematic diagram of the connection mechanism of this utility model.

[0028] Explanation of key symbols:

[0029] 1. Flow control mechanism; 101. Flow pipe; 102. Movable plate; 103. Connecting rod; 104. Sealing gasket; 105. Spring; 106. Stop block; 107. Limiting block; 2. Connecting mechanism; 201. Connecting pipe; 202. Buckle; 203. Locking block; 204. Extension pipe; 205. Fixed flange; 206. Fixed bolt; 3. Main body mechanism; 301. Valve gate body; 302. Valve cover; 303. Bracket; 304. Valve stem; 305. Valve body; 306. Handwheel; 307. Limiting plate. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0031] Example:

[0032] Please combine Figure 1-5 A cast steel gate valve according to this embodiment includes a flow-stopping mechanism 1, a connecting mechanism 2, and a main body mechanism 3. The flow-stopping mechanism 1 is located on the side wall of the main body mechanism 3, and the connecting mechanism 2 is located at the top of the flow-stopping mechanism 1.

[0033] The flow interception mechanism 1 includes a flow tube 101, a movable plate 102 is slidably connected to the inner wall of the flow tube 101, a connecting rod 103 is fixedly connected to the back of the movable plate 102, and a sealing gasket 104 is fixedly connected to the end of the connecting rod 103.

[0034] A spring 105 is sleeved on the outer wall of the connecting rod 103.

[0035] A stop block 106 is fixedly connected to the inner wall of the flow tube 101, and a limit block 107 is fixedly connected to the inner wall of the flow tube 101.

[0036] The connecting mechanism 2 includes a connecting tube 201, a buckle 202 fixedly connected to the top end of the connecting tube 201, a locking block 203 fixedly connected to the top end of the connecting tube 201, and an extension tube 204 fixedly connected to the top end of the connecting tube 201.

[0037] A fixing flange 205 is fixedly connected to the outer wall of the connecting pipe 201, and a fixing bolt 206 is fixedly connected to the outer wall of the fixing flange 205.

[0038] The main body 3 includes a valve gate body 301, a valve cover 302 is fixedly connected to the upper surface of the valve gate body 301, and a bracket 303 is fixedly connected to the upper surface of the valve cover 302.

[0039] The inner wall of the bracket 303 is threaded with a valve stem 304, the bottom of the valve stem 304 is rotatably connected to a valve body 305, the outer wall of the valve stem 304 is threaded with a handwheel 306, and the top of the valve stem 304 is fixedly connected to a limit plate 307.

[0040] The implementation principle of a cast steel gate valve in this embodiment is as follows: The movable plate 102 is slidably connected to the flow pipe 101. The movable plate 102 is fixedly connected to the connecting rod 103, and the connecting rod 103 is fixedly connected to the sealing gasket 104. By providing sealing gaskets 104 at both ends of the flow pipe 101, the flow pipe 101 can be sealed by the sealing gaskets 104. A spring 105 is sleeved on the connecting rod 103. When the flow pipe 101 is connected to the connecting pipe 201, the extension pipe 204 extends to the movable plate... 102 is squeezed to move it backward. When the movable plate 102 moves backward, it squeezes the spring 105. At the same time, the connecting rod 103 drives the sealing gasket 104 to move synchronously, creating a gap between the sealing gasket 104 and the stop block 106, so that the liquid can pass through smoothly. When the flow pipe 101 and the connecting pipe 201 are disassembled, the extension pipe 204 separates from the movable plate 102. The spring 105 releases its elastic potential energy to drive the movable plate 102, the connecting rod 103 and the sealing gasket 104 to return to their original positions. After the sealing gasket 104 is reset, it can seal the flow pipe 101, effectively preventing foreign objects from entering the device and causing blockage when it is not connected. It can also prevent leakage of residual liquid inside the device. By setting a limiting block 107 at the front end of the movable plate 102, the movement range of the movable plate 102 can be limited by the limiting block 107 to prevent it from falling off. The connecting pipe 201 is used to fix the connecting buckle 202 and the locking block 203. By setting a locking block 203 at the top end of both the connecting pipe 201 and the flow pipe 101, There are clips 202 and clips 203, and the positions of clips 202 and clips 203 correspond to each other. Through the cooperation of clips 202 and clips 203, pre-fixing can be performed when connecting the flow pipe 101 and the connecting pipe 201, thereby increasing the flexibility in the connection process. By providing fixing flanges 205 on the outer walls of both the flow pipe 101 and the connecting pipe 201, the connection between the fixing flanges 205 and the fixing bolts 206 further enhances the firmness of the connection between the flow pipe 101 and the connecting pipe 201.

[0041] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cast steel gate valve characterized by: Including intercepting mechanism (1), connecting mechanism (2) and main body mechanism (3), the intercepting mechanism (1) is located in the side wall of main body mechanism (3), the connecting mechanism (2) is located in the top of intercepting mechanism (1); The inner wall of the flow pipe (101) is slidably connected with the movable plate (102), the back of the movable plate (102) is fixedly connected with the connecting rod (103), and the end of the connecting rod (103) is fixedly connected with the sealing pad (104).

2. A cast steel gate valve as defined in claim 1, wherein: The outer wall of the connecting rod (103) is sleeved with a spring (105).

3. A cast steel gate valve as defined in claim 1 wherein: The inner wall of the flow pipe (101) is fixedly connected with a stop block (106), and the inner wall of the flow pipe (101) is fixedly connected with a limiting block (107).

4. A cast steel gate valve as defined in claim 1 wherein: The connecting mechanism (2) includes a connecting pipe (201), the top of the connecting pipe (201) is fixedly connected with a buckle (202), the top of the connecting pipe (201) is fixedly connected with a clamping block (203), and the top of the connecting pipe (201) is fixedly connected with an extension pipe (204).

5. A cast steel gate valve as defined in claim 4 wherein: The outer wall of the connecting pipe (201) is fixedly connected with a fixed flange (205), and the outer wall of the fixed flange (205) is fixedly connected with a fixed bolt (206).

6. A cast steel gate valve as defined in claim 1 wherein: The main body mechanism (3) includes a valve gate main body (301), the upper surface of the valve gate main body (301) is fixedly connected with a valve cover (302), and the upper surface of the valve cover (302) is fixedly connected with a support (303).

7. A cast steel gate valve as defined in claim 6 wherein: The inner wall of the support (303) is threadedly connected with a valve rod (304), the bottom of the valve rod (304) is rotatably connected with a valve body (305), the outer wall of the valve rod (304) is threadedly connected with a hand wheel (306), and the top of the valve rod (304) is fixedly connected with a limiting plate (307).

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