High-temperature-resistant fire-fighting gate valve body
By designing the lifting block and sliding plate structure in the fire gate valve body, combining the sliding rod and elastic parts, and using the damping device to eliminate the water hammer, the problem of water hammer phenomenon when the fire gate valve is closed is solved and the service life of the valve is improved.
Patent Information
- Application Number
- CN202421028718.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-05-13
AI Technical Summary
Existing fire gate valves are prone to water hammering when closed, resulting in damage to the valve plate and affecting long-term use.
A high-temperature fire-resistant gate valve valve body is designed, adopting a lifting block and sliding plate structure. Through the cooperation of the sliding rod and the elastic member, the water hammer is eliminated by a damping device to prevent the water hammer from hitting the valve plate.
It effectively avoids damage to the valve plate by the water hammer, improves the service life of the valve, and maintains the simplicity of the structure.
Smart Images
Figure CN222823832U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a high-temperature resistant fire-fighting gate valve body. Background Art
[0002] A fire gate valve is a device that controls the flow of water through an opening and closing piece. When controlling the fire gate valve to open or close, the staff can drive the valve stem to move by rotating the handwheel, thereby driving the opening and closing piece to move up or down through the valve stem.
[0003] The existing fire gate valve bodies all use valve body castings. In order to make the valve body castings resistant to high temperatures, a high-temperature resistant gate valve body casting is disclosed on the Chinese Patent Network. Although it can meet the high temperature resistance requirements, when it is used, water hammer will occur inside the gate valve when the gate valve is closed, thereby damaging the valve plate, which is not conducive to the long-term use of the valve.
[0004] In order to solve this problem, the utility model is produced. Utility Model Content
[0005] Therefore, in view of the above problems, the utility model proposes a high temperature resistant fire gate valve body with a simple structure and anti-water hammer function.
[0006] In order to solve the above technical problems, the solution adopted by the utility model is: a high-temperature resistant fire-fighting gate valve body, including a valve body, a water inlet channel and a water outlet channel opened on the valve body, and a lifting block. The upper end of the valve body is provided with a placement chamber, the placement chamber is connected with the water inlet channel, the lifting block is arranged in the placement chamber, a sliding channel is opened on the lifting block, a sliding plate is slidably provided in the sliding channel, a hammer eliminating device for eliminating water hammer is provided in the sliding channel, and a lifting device for driving the lifting block into the water inlet channel is provided in the placement chamber.
[0007] A further improvement is that the hammer elimination device includes a sliding rod, the sliding rod is slidably inserted into the lifting block, the sliding rod is connected to the sliding plate, an elastic member is provided on the sliding rod, and a damping device is provided between the sliding plate and the inner wall of the sliding channel.
[0008] A further improvement is that: the damping device is: the inner wall of the sliding channel is provided with a friction layer, and the sliding plate resists the friction layer.
[0009] A further improvement is that: a first channel for water flow to enter is opened at the front end of the lifting block, and a second channel for water flow to flow out is opened at the rear end of the lifting block.
[0010] A further improvement is that the lifting device includes a screw rod, which is rotatably inserted into the placement chamber, one end of the screw rod is threadedly inserted into the lifting block and is threadedly transmitted with the lifting block, and the other end of the screw rod passes through the placement chamber, and a limit device is provided in the valve body to enable the lifting block to be lifted vertically.
[0011] A further improvement is that: the limit device comprises a limit rod, the limit rod is arranged on the side of the lifting block, a limit channel is provided on the valve body, and the limit rod is slidably arranged in the limit channel.
[0012] A further improvement is that one-way valves are respectively provided in the first channel and the second channel.
[0013] A further improvement is that a hand wheel is provided on the screw rod.
[0014] A further improvement is that: a limit block is provided on the sliding rod, a limit slot is provided on the lifting block, and the limit block is arranged in the limit slot.
[0015] A further improvement is that the elastic member is a spring, which is sleeved on the sliding rod, one end of the spring resists the sliding plate, and the other end of the spring resists the lifting block.
[0016] By adopting the above technical solution, the beneficial effects of the utility model are:
[0017] The structure is simple and has the function of preventing water hammer. The lifting block enters the water inlet channel, and when water hammer occurs, the water hammer acts on the sliding plate to eliminate the water hammer, thereby preventing the water hammer from hitting the valve plate and damaging the valve plate, thereby increasing the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the cutaway structure of a high temperature resistant fire-fighting gate valve body according to an embodiment of the utility model. DETAILED DESCRIPTION
[0019] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.
[0020] refer to Figure 1, the utility model embodiment discloses: A high temperature fire-fighting gate valve body comprises a valve body 1, a water inlet channel 2 and a water outlet channel opened on the valve body 1, a lifting block 4, and a sliding rod 9. The upper end of the valve body 1 is provided with a placement chamber 3, and the placement chamber 3 is communicated with the water inlet channel 2. The lifting block 4 is arranged in the placement chamber 3. A sliding channel 7 is opened on the lifting block 4, and a sliding plate 8 is slidably arranged in the sliding channel 7. The sliding rod 9 is slidably penetrated on the lifting block 4, and the sliding rod 9 is connected with the sliding plate 8. A spring 10 is provided on the sliding rod 9, and the spring 10 is sleeved on the sliding rod 9. One end of the spring 10 resists the sliding plate 8, and the other end of the spring 10 resists the lifting block 4. A friction layer 11 is provided on the inner wall of the sliding channel 7, and the sliding plate 8 resists the friction layer 11. A first channel 6 for water flow to enter is opened at the front end of the lifting block 4, and a second channel 5 for water flow to flow out is opened at the rear end of the lifting block 4. A lifting device for driving the lifting block 4 to enter the water inlet channel 2 is provided in the placement chamber 3.
[0021] Specifically, the lifting device includes a screw 12 and a limit rod (not shown in the figure), the screw 12 is rotatably arranged on the placement chamber 3, one end of the screw 12 is threadedly arranged on the lifting block 4 and is threadedly driven with the lifting block 4, the other end of the screw 12 passes through the placement chamber 3, the limit rod is arranged on the side of the lifting block 4, a limit channel 13 is provided on the valve body 1, and the limit rod is slidably arranged in the limit channel 13. In use, when the valve is to be closed, the screw 12 is rotated, the screw 12 is threadedly driven with the lifting block 4, and the lifting block 4 is driven to descend from the placement chamber 3 into the water inlet channel 2, and then the valve is closed, at this time, the water hammer enters the water inlet channel 2, and then pushes the sliding plate 8, the sliding plate 8 slides, thereby compressing the spring 10, and the water hammer energy is dissipated under the action of the spring 10. At the same time, the sliding plate 8 slides and rubs against the friction layer 11, thereby further dissipating the hammer, and at the same time, the sliding plate 8 squeezes out the water in the sliding channel 7, further dissipating the water hammer energy. Thus, the water hammer is blocked and the damage to the sliding plate 8 caused by the water hammer is reduced, and the valve plate is prevented from being easily damaged by the water hammer. When the valve is used, the screw rod 12 is reversed to allow the lifting block 4 to enter the placement chamber 3, thereby preventing the lifting block 4 from affecting the water flow.
[0022] In order to facilitate water to flow into and out of the sliding channel 7 , one-way valves are respectively provided in the first channel 6 and the second channel 5 .
[0023] In order to facilitate the rotation of the screw rod 12 , a hand wheel 14 is provided on the screw rod 12 .
[0024] In order to prevent the sliding rod 9 from falling off, a limit block 15 is provided on the sliding rod 9, and a limit groove is provided on the lifting block 4, and the limit block 15 is arranged in the limit groove.
[0025] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.
Claims
1. A high temperature resistant fire gate valve body, comprising a valve body, a water inlet channel and a water outlet channel opened on the valve body, characterized in that: It also includes a lifting block, a placement chamber is provided on the upper end of the valve body, the placement chamber is communicated with the water inlet channel, the lifting block is arranged in the placement chamber, a sliding channel is opened on the lifting block, a sliding plate is slidably provided in the sliding channel, a hammer eliminating device for eliminating water hammer is provided in the sliding channel, and a lifting device for driving the lifting block to enter the water inlet channel is provided in the placement chamber.
2. A high temperature resistant fire gate valve body according to claim 1, characterized in that: The hammer elimination device comprises a sliding rod, which is slidably arranged on the lifting block, connected to a sliding plate, an elastic member is arranged on the sliding rod, and a damping device is arranged between the sliding plate and the inner wall of the sliding channel.
3. A high temperature resistant fire gate valve body according to claim 2, characterized in that: The damping device is as follows: a friction layer is provided on the inner wall of the sliding channel, and the sliding plate resists the friction layer.
4. A high temperature resistant fire gate valve body according to claim 2, characterized in that: The front end of the lifting block is provided with a first channel for water flow to enter, and the rear end of the lifting block is provided with a second channel for water flow to flow out.
5. The high temperature resistant fire gate valve body according to claim 1, characterized in that: The lifting device includes a screw rod, which is rotatably installed in the placement chamber, one end of the screw rod is threadedly installed in the lifting block and is threadedly transmitted with the lifting block, and the other end of the screw rod passes through the placement chamber. A limit device is provided in the valve body to enable the lifting block to lift vertically.
6. A high temperature resistant fire gate valve body according to claim 5, characterized in that: The limiting device comprises a limiting rod, the limiting rod is arranged on the side of the lifting block, a limiting channel is provided on the valve body, and the limiting rod is slidably arranged in the limiting channel.
7. A high temperature resistant fire gate valve body according to claim 4, characterized in that: One-way valves are respectively disposed in the first channel and the second channel.
8. The high temperature resistant fire gate valve body according to claim 5, characterized in that: A hand wheel is arranged on the screw rod.
9. A high temperature resistant fire gate valve body according to claim 2, characterized in that: The sliding rod is provided with a limit block, the lifting block is provided with a limit slot, and the limit block is arranged in the limit slot.
10. A high temperature resistant fire gate valve body according to claim 2, characterized in that: The elastic member is a spring, which is sleeved on the sliding rod, one end of the spring resists the sliding plate, and the other end of the spring resists the lifting block.