Fire-fighting signal gate valve
By adopting a telescopic pipe and limiting rod design in the fire signal gate valve, water flow is prevented from entering the upper chamber, and combined with a one-way drainage channel and filter net, the problem of water flow not being discharged after the valve plate is closed is solved, preventing rust, and improving the valve Service life.
Patent Information
- Application Number
- CN202420999356.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-10
AI Technical Summary
After the valve plate is closed, the fluid in the upper chamber cannot be discharged, resulting in long-term soaking of the valve stem and the inner wall of the upper chamber, which can easily lead to rust and reduce the service life of the valve.
A fire signal gate valve including valve body, valve cover, water inlet passage, water outlet passage, valve seat, valve plate, connecting block, valve stem and isolation device is designed. Through the cooperation of the telescopic pipe and limit rod, water flow is prevented from entering. In the upper chamber, a one-way drainage channel and a filter screen are provided to remove the water flow.
Effectively prevent rust from the valve stem and the inner wall of the upper chamber, extend the service life of the valve, and prevent water from entering the upper chamber through the sealing effect of the telescopic tube, ensuring that the valve stem and the inner wall are not subject to long-term immersion of water.
Smart Images
Figure CN222277527U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valves, in particular to a fire signal gate valve. Background Art
[0002] Fire signal butterfly valve refers to the valve body with fewer connecting bolts under high pressure and large diameter conditions, which can enhance the reliability of the valve and overcome the influence of the system's deadweight on the normal operation of the valve. Fire-fighting special signal butterfly valve can clearly display the valve switch status, and has the function of intuitively, clearly and reliably reflecting the working status of the fire protection system, so it is widely and widely used in fire protection systems.
[0003] The existing fire signal butterfly valve can meet the demand, but when the valve plate moves up to the upper cavity of the valve body, the upper cavity is connected to the fluid channel of the valve body, so that water flows into the upper cavity. When the valve plate is closed and moved down, the fluid in the upper cavity cannot be discharged, so that the section of the valve stem in the upper valve cavity is always immersed in the fluid in the upper valve cavity, which easily causes the surface of the valve stem to rust. At the same time, the inner wall of the upper cavity is always immersed and is prone to rust, which greatly reduces the service life 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 fire signal gate valve which has a simple structure, can prevent valve stem corrosion and has a long service life.
[0006] In order to solve the above technical problems, the solution adopted by the utility model is: a fire signal gate valve, including a valve body, a valve cover arranged on the valve body, a water inlet channel and a water outlet channel opened on the valve body, a valve seat arranged between the water inlet channel and the water outlet channel, a valve plate for sealing the valve seat, and a connecting block. A valve stem is rotatably arranged in the valve body, one end of the valve stem is connected to the valve plate, and the other end of the valve stem passes through the valve cover. The connecting block is sleeved on the valve stem, and the connecting block and the valve stem are threadedly driven. A limiting device for making the connecting block move linearly is arranged in the valve body, and an isolation device is also arranged between the connecting block and the valve body to separate the water flow and prevent the connecting block from entering the inner wall of the upper cavity when it is raised and lowered.
[0007] A further improvement is that the isolation device is a stretchable telescopic tube, one end of which is sleeved on the connecting block and the other end of which is arranged on the valve seat.
[0008] A further improvement is that the limiting device comprises a limiting rod, the limiting rod is arranged on the connecting block, the inner wall of the upper cavity of the valve body is provided with a limiting channel, and the limiting rod is arranged in the limiting channel.
[0009] A further improvement is that a drainage channel is provided on the valve seat for draining the water in the upper cavity after the valve plate seals the valve seat.
[0010] A further improvement is that a one-way valve is provided in the drainage channel.
[0011] A further improvement is that a first filter screen and a second filter screen are provided at both ends of the drainage channel to prevent clogging of the one-way valve.
[0012] By adopting the above technical solution, the beneficial effects of the utility model are:
[0013] The structure is simple, can prevent the valve stem from rusting, and has a long service life. Through the sealing effect of the telescopic tube, water will not flow into the upper chamber, thereby preventing the valve stem and the inner wall of the upper chamber from being soaked in water for a long time, which may easily lead to rust of the valve stem and the inner wall of the upper chamber, which is beneficial to improving the service life of the valve. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the cutaway structure of a fire signal gate valve according to an embodiment of the utility model.
[0015] Figure 2 It is a schematic diagram of the enlarged structure of A in the embodiment of the present utility model. DETAILED DESCRIPTION
[0016] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.
[0017] refer to Figure 1-2 , the utility model embodiment discloses: a fire signal gate valve, comprising a valve body 1, a valve cover arranged on the valve body 1, a water inlet channel 2 and a water outlet channel 3 opened on the valve body 1, a valve seat 5 arranged between the water inlet channel 2 and the water outlet channel 3, a valve plate 4 for sealing the valve seat 5, and a connecting block 7, a valve stem 6 is rotatably arranged in the valve body 1, one end of the valve stem 6 is connected to the valve plate 4, and the other end of the valve stem 6 passes through the valve cover, the connecting block 7 is sleeved on the valve stem 6, the connecting block 7 and the valve stem 6 are threadedly driven, a limiting rod 8 is transversely arranged on the connecting block 7, the valve body 1 is located on the inner wall of the upper cavity to open a limiting channel, the limiting rod 8 is arranged in the limiting channel, and an isolation device is also provided between the connecting block 7 and the valve body 1 to separate the water flow and prevent the connecting block 7 from entering the inner wall of the upper cavity when it is raised and lowered.
[0018] Preferably, the isolation device is a stretchable telescopic tube 9 , one end of which is sleeved on the connecting block 7 , and the other end of which is disposed on the valve seat 5 .
[0019] When the gate valve is opened during use, the valve stem 6 is rotated, and the valve stem 6 drives the valve plate 4 to rise. At the same time, the valve stem 6 and the connecting block 7 are threadedly driven, so that the connecting block 7 is upward, and the connecting block 7 pulls the telescopic tube 9 upward. At this time, the water flow of the water inlet channel 2 flows into the upper cavity from the valve seat 5. Due to the sealing effect of the telescopic tube 9, the water flow will not flow into the upper cavity, thereby preventing the valve stem 6 and the inner wall of the upper cavity from being soaked in water for a long time, which may easily cause the valve stem 6 and the inner wall of the upper cavity to rust, which is beneficial to improving the service life of the valve.
[0020] In order to drain the water in the upper cavity after closing the valve and further prevent rust, a drainage channel 10 is provided on the valve seat 5 for draining the water in the upper cavity after the valve plate 4 seals the valve seat 5 .
[0021] In order to allow water to be discharged only into the drainage channel 10 , a one-way valve 11 is provided in the drainage channel 10 .
[0022] In order to prevent the one-way valve 11 from being blocked, a first filter screen 12 and a second filter screen 13 are provided at both ends of the drainage channel 10 to prevent the one-way valve 11 from being blocked.
[0023] 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 fire signal gate valve, comprising a valve body, a valve cover arranged on the valve body, a water inlet channel and a water outlet channel opened on the valve body, a valve seat arranged between the water inlet channel and the water outlet channel, and a valve plate for sealing the valve seat, wherein a valve stem is rotatably arranged in the valve body, one end of the valve stem is connected to the valve plate, and the other end of the valve stem passes through the valve cover, characterized in that: It also includes a connecting block, which is sleeved on the valve stem. The connecting block and the valve stem are threadedly driven. A limiting device is provided in the valve body to enable the connecting block to move linearly. An isolation device is also provided between the connecting block and the valve body to separate the water flow and prevent the connecting block from entering the inner wall of the upper cavity when it is raised and lowered.
2. A fire signal gate valve according to claim 1, characterized in that: The isolation device is a stretchable telescopic tube, one end of which is sleeved on the connecting block, and the other end of which is arranged on the valve seat.
3. A fire signal gate valve according to claim 1, characterized in that: The limiting device comprises a limiting rod, which is arranged on the connecting block. The inner wall of the upper cavity of the valve body is provided with a limiting channel, and the limiting rod is arranged in the limiting channel.
4. A fire signal gate valve according to claim 1, characterized in that: The valve seat is provided with a drainage channel for draining the water in the upper cavity after the valve plate seals the valve seat.
5. A fire signal gate valve according to claim 4, characterized in that: A one-way valve is arranged in the drainage channel.
6. A fire signal gate valve according to claim 5, characterized in that: The two ends of the drainage channel are provided with a first filter screen and a second filter screen to prevent the one-way valve from being blocked.