Wet alarm valve with protection device

Abstract

The utility model discloses a wet-type alarm valve with a protection device, which comprises a valve body, a connecting pipe is arranged on the left side of the valve body, a delayer is arranged at one end, far away from the valve body, of the connecting pipe, an alarm bell is arranged at the top of the delayer, and the left side of the valve body is movably connected with a left shell. By arranging the valve body, the connecting pipe, the delayer, the alarm bell, the left shell, the right shell, the fixing frame and the fastening rod, the wet-type alarm valve is firstly installed on a designated pipeline, then the left shell and the right shell are sequentially clamped on the left side and the right side of the valve body, and the plug pin is inserted into the inserting hole in the surface of the fixing piece. The fastening rod is rotated to a threaded rod at the bottom of the fastening rod to penetrate through the fixing frame and then is screwed into an inner cavity in the top of the valve body, the valve clack is opened and closed by means of lowering or rising of water pressure on the side of a pipe network system, and in a servo state, when water supply pressure slightly fluctuates, the upper water pressure and the lower water pressure of the valve clack are balanced under the action of the bypass balance pipe; the valve clack cannot be opened to generate false alarm.

Description

Technical Field

[0001] This utility model relates to the field of wet alarm valve technology, specifically a wet alarm valve equipped with a protection device. Background Art

[0002] A wet alarm valve is a one-way valve that allows water to flow in only one direction and triggers an alarm at a certain flow rate. The water pressure before and after the wet alarm valve is balanced. When the pressure is unbalanced, the wet alarm valve supplies water to the pipe network while issuing an alarm signal and starting the fire pump. Currently, existing wet alarm valves are generally exposed to the outside, which makes them vulnerable to damage caused by impact.

[0003] For example, a published utility model provides a "wet alarm valve with a protective device," with publication number CN208295244U. This patent includes a wet alarm valve and two protective shells sleeved on the outside of the wet alarm valve. Two opposing side walls of the wet alarm valve are connected to water pipes. The side walls of the two protective shells are slidably connected to a plurality of transversely arranged sliding rods through through holes, which can effectively prevent damage to the wet alarm valve caused by impact and effectively protect the wet alarm valve.

[0004] However, this patent uses bolts to install and fix the protective shell, which is inconvenient both during installation and disassembly, and no leakage detection mechanism is provided. When leakage occurs at the connection between the wet alarm valve and the pipeline, the technicians cannot discover it in time. Therefore, the purpose of this utility model is to improve the practicality of the wet alarm valve by providing a convenient disassembly and assembly structure and a leakage detection mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide a wet alarm valve with a protective device, which has the advantage of high practicality and solves the problem that the existing wet alarm valve is installed and fixed to the protective shell by bolts, which is inconvenient during installation and disassembly, and no leakage detection mechanism is provided. When leakage occurs at the connection between the wet alarm valve and the pipeline, the technicians cannot discover the problem in time.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a wet alarm valve with a protective device, comprising a valve body, a connecting pipe is provided on the left side of the valve body, a delay device is provided at the end of the connecting pipe away from the valve body, an alarm bell is provided on the top of the delay device, the left side of the valve body is movably connected to a left shell, and the right side of the left shell is provided, the tops of the opposite sides of the left shell and the right shell are fixedly connected to a fixing frame, the surface of the fixing frame is penetrated by a fastening rod, the bottom of the fastening rod is fixedly connected to a threaded rod, the surface of the threaded rod is threadedly connected to the inner cavity of the top of the valve body, both sides of the top of the valve body base are fixedly connected to a clamping frame, the bottoms of the opposite sides of the left shell and the right shell are fixedly connected to a clamping frame, one side of the clamping frame is in contact with the surface of the clamping frame, and the front and rear sides of the inner cavity of the right shell are fixedly connected to water immersion sensors.

[0007] Preferably, the top of the fastening rod is fixedly connected to an adjusting disk, and the surface of the adjusting disk is covered with an anti-slip sleeve.

[0008] Preferably, a clamping slot is provided on opposite sides of the clamping frame, an inner cavity of the clamping slot is movably connected to a clamping block, and one side of the clamping block is fixedly connected to the surface of the clamping frame.

[0009] Preferably, a reinforcing sheet is fixedly connected to each other on one side of the top of the left shell and the top of the right shell, and a plug hole is provided on the surface of the reinforcing sheet.

[0010] Preferably, an annular groove is provided at the bottom of the valve body base, and a sealing ring is provided in the inner cavity of the annular groove.

[0011] Preferably, the front and back sides of the left shell and the right shell are both fixedly connected with baffles, and the front side of the baffles is fixedly connected with a connecting piece.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The utility model is provided with a valve body, a connecting pipe, a delay device, an alarm bell, a left shell, a right shell, a fixing frame and a fastening rod. First, the wet alarm valve is installed on the designated pipeline. Then the left shell and the right shell are clamped on the left and right sides of the valve body in turn. The pin is inserted into the socket on the surface of the fixing plate. The fastening rod is rotated until the threaded rod at its bottom passes through the fixing frame and is screwed into the inner cavity at the top of the valve body. The valve disc is opened and closed by relying on the decrease or increase of the water pressure on the pipe network system side. In the servo state, when the water supply pressure fluctuates slightly, the bypass balancing pipe balances the water pressure above and below the valve disc. The upper pressure-bearing surface of the valve disc is greater than the lower pressure-bearing surface, and the valve disc will not open to cause a false alarm. If water leaks at the connection between the valve body and the external pipeline, water flows to the water immersion sensor, and the water immersion sensor sends a signal to the control mechanism, which controls the alarm bell to sound an alarm.

[0014] 2. This utility model features an adjustment disc, allowing installers of the wet alarm valve to easily hold and rotate it, thereby rotating the fastening rod at the bottom of the adjustment disc. This allows the threaded rod at the bottom of the fastening rod to be screwed into the inner cavity at the top of the valve body. The inclusion of a slot and a locking block enhances the tightness of the engagement between the locking bracket and the surface of the clamping bracket, thus improving the stability of the left and right shells on both sides of the valve body. A reinforcing plate reinforces the connection between the tops of the left and right shells, further strengthening the protective structure they form. A sealing ring improves the sealing between the bottom of the valve body and the external pipe connection. The baffle and its connecting plate not only increase the protective performance of the left and right shells but also enhance the connection strength between them. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the structure of the utility model;

[0017] Figure 3 A three-dimensional diagram of the fastening rod of the utility model;

[0018] Figure 4 For this utility model Figure 2 A local enlarged schematic diagram of point A in the middle.

[0019] In the figure: 1. Valve body; 2. Connecting pipe; 3. Delay device; 4. Alarm; 5. Left shell; 6. Right shell; 7. Fixing bracket; 8. Fastening rod; 9. Threaded rod; 10. Clamping bracket; 11. Clamping bracket; 12. Water immersion sensor; 13. Adjusting disk; 14. Sealing ring; 15. Baffle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The components of the present invention are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0022] See also Figure 1-4A wet alarm valve with a protective device includes a valve body 1, a connecting pipe 2 is provided on the left side of the valve body 1, a delay device 3 is provided at the end of the connecting pipe 2 away from the valve body 1, an alarm bell 4 is provided on the top of the delay device 3, a left shell 5 is movably connected to the left side of the valve body 1, a right shell 6 is provided on the right side of the left shell 5, and the tops of the opposite sides of the left shell 5 and the right shell 6 are fixedly connected to a fixing frame 7, and a fastening rod 8 is passed through the surface of the fixing frame 7, and a threaded rod 9 is fixedly connected to the bottom of the fastening rod 8, and the surface of the threaded rod 9 is threadedly connected to the inner cavity of the top of the valve body 1, and clamping frames 10 are fixedly connected on both sides of the top of the base of the valve body 1, and a clamping frame 11 is fixedly connected to the bottom of the opposite side of the left shell 5 and the right shell 6. One side of the clamping frame 11 contacts the surface of the clamping frame 10, and a water immersion sensor 12 is fixedly connected to the front and rear sides of the inner cavity of the right shell 6.

[0023] The top of the fastening rod 8 is fixedly connected with an adjusting disk 13 , and the surface of the adjusting disk 13 is covered with an anti-slip sleeve.

[0024] Through the above technical solution, by setting the adjusting disk 13, it is convenient for the wet alarm valve installer to hold the adjusting disk 13 with his hand and rotate it, thereby driving the fastening rod 8 at the bottom of the adjusting disk 13 to rotate, so that the threaded rod 9 at the bottom of the fastening rod 8 can be screwed into the inner cavity at the top of the valve body 1.

[0025] Each side of the clamping frame 10 has a slot, and a block is movably connected to the inner cavity of the slot. One side of the block is fixedly connected to the surface of the clamping frame 11.

[0026] The above technical solution, by setting the slot and the block, is used to improve the tightness of the engagement between one side of the locking frame 11 and the surface of the clamping frame 10, thereby improving the stability of the left shell 5 and the right shell 6 on both sides of the valve body 1.

[0027] The top of the left shell 5 and the right shell 6 are both fixedly connected to each other on the side that are close to each other, and the surface of the reinforcing plate has an insertion hole.

[0028] The above technical solution uses reinforcing plates to strengthen the connection between the top of the left shell 5 and the right shell 6, thereby further improving the strength of the protective structure formed by the two shells.

[0029] An annular groove is provided at the bottom of the valve body 1 base, and a sealing ring 14 is provided in the inner cavity of the annular groove.

[0030] Through the above technical solution, the sealing ring 14 is provided to improve the sealing between the bottom of the valve body 1 and the external pipeline connection port.

[0031] The front and back surfaces of the left shell 5 and the right shell 6 are both fixedly connected with baffles 15 , and the front surface of the baffles 15 is fixedly connected with a connecting piece.

[0032] Through the above technical solution, by providing the baffle 15 and the connecting piece on its surface, not only the protection performance of the left shell 5 and the right shell 6 can be increased, but the connecting piece can also improve the connection strength of the left shell 5 and the right shell 6.

[0033] When in use, first install the wet alarm valve on the designated pipeline, then clamp the left shell 5 and the right shell 6 on the left and right sides of the valve body 1 in turn, insert the pin into the socket on the surface of the fixing plate, rotate the fastening rod 8 until the threaded rod 9 at its bottom passes through the fixing frame 7 and is screwed into the inner cavity at the top of the valve body 1, and rely on the decrease or increase of the water pressure on the pipe network system side to open and close the valve disc. In the servo state, when the water supply pressure fluctuates slightly, the bypass balancing pipe balances the upper and lower water pressures of the valve disc, and the upper pressure-bearing surface of the valve disc is larger than the lower pressure-bearing surface. The valve disc will not open and cause a false alarm. When the protective device needs to be disassembled, unplug the pins in the socket and the inner cavity of the connecting plate, twist the fastening rod 8 until the threaded rod 9 at its bottom is disengaged from the inner cavity at the top of the valve body 1, and then the left shell 5 and the right shell 6 can be removed.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wet alarm valve with a protective device, comprising a valve body (1), characterized in that: A connecting pipe (2) is provided on the left side of the valve body (1), a delay device (3) is provided at one end of the connecting pipe (2) away from the valve body (1), an alarm bell (4) is provided on the top of the delay device (3), a left shell (5) is movably connected to the left side of the valve body (1), a right shell (6) is provided on the right side of the left shell (5), a fixing frame (7) is fixedly connected to the top of the opposite side of the left shell (5) and the right shell (6), a fastening rod (8) is penetrated and connected to the surface of the fixing frame (7), and the A threaded rod (9) is fixedly connected to the bottom of the fastening rod (8), the surface of the threaded rod (9) is threadedly connected to the inner cavity of the top of the valve body (1), both sides of the top of the base of the valve body (1) are fixedly connected to clamping frames (10), the bottoms of the opposite sides of the left shell (5) and the right shell (6) are fixedly connected to snap-fit ​​frames (11), one side of the snap-fit ​​frame (11) is in contact with the surface of the clamping frame (10), and the front and rear sides of the inner cavity of the right shell (6) are fixedly connected to water immersion sensors (12).

2. A wet alarm valve with a protective device according to claim 1, characterized in that: The top of the fastening rod (8) is fixedly connected to an adjustment disk (13), and the surface of the adjustment disk (13) is covered with an anti-slip cover.

3. A wet alarm valve with a protective device according to claim 1, characterized in that: A clamping slot is provided on the opposite side of the clamping frame (10), the inner cavity of the clamping slot is movably connected to a clamping block, and one side of the clamping block is fixedly connected to the surface of the clamping frame (11).

4. A wet alarm valve with a protective device according to claim 1, characterized in that: A reinforcing sheet is fixedly connected to the top sides of the left shell (5) and the right shell (6) that are close to each other, and a plug hole is provided on the surface of the reinforcing sheet.

5. A wet alarm valve with a protective device according to claim 1, characterized in that: An annular groove is provided at the bottom of the base of the valve body (1), and a sealing ring (14) is provided in the inner cavity of the annular groove.

6. A wet alarm valve with a protective device according to claim 1, characterized in that: The front and back sides of the left shell (5) and the right shell (6) are both fixedly connected to baffles (15), and the front side of the baffles (15) is fixedly connected to a connecting piece.

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