A valve with remote fusing control

Abstract

The present invention relates to a valve with remote fusing control, which has a valve body. An inclined valve plate is hinged on the valve body. A left connecting rod body and a right connecting rod body are respectively arranged on the outer walls on the left and right sides of the valve body; a tension spring is installed on a tension spring clip, and the lower end of the tension spring is connected to a two-link rod; a connecting rod pressing plate is further arranged on a connecting rod seat plate, and the connecting rod pressing plate is connected to the middle part of the two-link rod through a fusing pin pin shaft. The end of the two-link rod is connected to the front end of the steel cable through a cable clip. The tails of the two steel cables on the left and right connecting rod bodies are both connected to a push rod motor assembly at the same time; this valve is an improved solution based on the technical solution of the existing application and is also a brand-new solution. Although the improvement is relatively simple, it can greatly improve the response sensitivity and reliability during a fire, so that the fire prevention performance of this valve is further essentially improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fume purification equipment, and in particular to a valve with remote fusing control. Background Art

[0002] In the current market, especially in hotel and restaurant kitchens where there are many stoves or other industrial systems involving multiple fume exhausts, the current fire-proof regulating air valves in use are general air valves, and there is no special air valve installed inside the fume hood. For the air valves on the current market, the valve body is mostly square. At present, there is no fume hood with an inclined air valve installed inside the fume hood on the market. Most of the fume exhaust hoods on the market are controlled by one fan for multiple fume hoods. When cooking with one stove, the fan also needs to be fully loaded, which is extremely wasteful of electric energy and the energy-saving situation is extremely unsatisfactory. Moreover, such a fume exhaust system also has an unsatisfactory fume exhaust effect on a single fume exhaust area in the system.

[0003] Of course, there are also currently technical solutions related to the fire-proof fume hood air valve structure. For example, the technical solutions described in the patent applications with application numbers 201910489289.0 and 201910489301.8, that is, once a fire occurs below the fume hood, when the temperature reaches a certain fusing value, the temperature sensor thereon will feedback the temperature situation to the electric actuator, and the inclined valve plate can be pulled back and closed for fire prevention through the action of the electric actuator. At the same time, there is also an operating mechanism using a tension spring to help reset. However, the above mechanisms all have deficiencies at the same time, that is, once the actuator has a problem or the electronic control mechanism fails, the fire-proof function cannot be realized, which will leave a huge fire hazard. Moreover, due to the extremely harsh working environment of the fume purification equipment itself, as the usage time increases, the probability of these mechanisms failing will greatly increase, thereby increasing the safety hazard of fire occurrence. Summary of the Invention

[0004] The purpose of the present invention is to provide a valve with remote fusing control in view of the above situation. This valve is an improved solution based on the technical solutions of the existing applications and is also a brand-new solution. Although the improvement is relatively simple, it can greatly improve the response sensitivity and reliability during a fire, so that the fire-proof performance of the valve is further essentially improved.

[0005] The specific solution of the present invention is as follows: A valve with remote fusing control, which has a valve body. An inclined valve plate is hinged on the valve body. The bottom end of the inclined valve plate is hinged to the valve body, and a pulling handle is installed at the upper end of the inclined valve plate. On the outer walls of the left and right sides of the valve body, a left connecting rod body and a right connecting rod body are respectively provided. Both the left connecting rod body and the right connecting rod body include a connecting rod seat plate. A pipe orifice clamp and a spring clamp are provided on the connecting rod seat plate. A pipe orifice screw pipe is clamped on the pipe orifice clamp, and a steel cable is threaded through the pipe orifice screw pipe; a spring is installed on the spring clamp, and the lower end of the spring is connected to a two-link rod. The front end of the two-link rod is hinged to the middle part of the inclined valve plate; a connecting rod pressure plate is also provided on the connecting rod seat plate, and the connecting rod pressure plate is connected to the middle part of the two-link rod through a fusing pin pin shaft. The end of the two-link rod is connected to the front end of the steel cable through a cable clip. The tails of the two steel cables on the left and right connecting rod bodies are both connected to a push rod motor assembly at the same time, and the push rod motor assembly is arranged outside the valve body.

[0006] Further, in the present invention, the cross-section of the connecting rod pressure plate is a Z-shaped plate, and the connecting rod pressure plate surrounds the two-link rod therein.

[0007] Further, in the present invention, the fusing pin is composed of an internal and external thread nut, a nut pipe, a compression spring, a fusing piece, and a pin rod. One end side of the pin rod is connected and welded to the fusing piece, and the other end of the pin rod sequentially passes through the compression spring, the nut pipe, and the internal and external thread nut and is inserted into the pin shaft connection hole on the corresponding two-link rod.

[0008] Further, in the present invention, the push rod motor assembly includes a push rod motor mounting seat plate, a push rod motor, and a synchronous clamping plate. The synchronous clamping plate is arranged on the front end head of the output end of the push rod motor. The push rod motor is installed on the push rod motor mounting seat plate. Pipe orifice clamps are respectively provided at both ends of the push rod motor mounting seat plate. A pipe orifice screw pipe is arranged on each pipe orifice clamp. The two steel cables on both sides pass through the corresponding pipe orifice screw pipes and are connected together through the synchronous clamping plate at the front part to form a synchronous action.

[0009] Further, in the present invention, the two-link rod is composed of a link rod A and a link rod B, and the two are hinged. The link rod A is connected to the spring, the fusing pin, and the cable clip, and the link rod B is hinged to the inclined valve plate.

[0010] The present invention has the following beneficial effects:

[0011] 1. By adopting a connection structure of a fuse pin and a tension spring for the two-link rod, once a fire occurs in the oil fume hood system or a situation where local high temperature in the oil fume purification system may cause a fire appears, the fuse piece in the fuse pin will immediately melt, and the compression spring therein will eject the pin rod. In this way, the tension spring will immediately pull up and retract the inclined valve plate, closing the entire valve, and the fire will not spread into the hood and the entire oil fume purification system. This structure is much safer and more reliable than the action mode relying on sensors and electric actuators in the prior art, and its stability and safety level have been greatly improved. This is the biggest difference between the solution of the present invention and the prior art solution.

[0012] 2. In the present invention, the steel cable ropes on both sides for opening or closing the inclined valve plate are driven by a single push rod motor assembly simultaneously and act synchronously, which is beneficial to the timely closing or opening of the inclined valve plate. At the same time, the push rod motor assembly is arranged outside the valve body. Once a failure occurs in the valve body itself and other components, the push rod motor, as the driving actuator, can still continue to act to achieve remote control and will not affect the closing or opening of the inclined valve plate, greatly enhancing the reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the open state of the inclined valve plate in the present invention;

[0014] Figure 2 is a schematic diagram of the state when the inclined valve plate is closed in the present invention;

[0015] Figure 3 is a schematic diagram of the structure of the remaining components after removing the valve body in the present invention;

[0016] Figure 4 is a schematic diagram of the structures of the various components connected to the left link body in the present invention;

[0017] Figure 5 is Figure 4 an exploded view of the various components in

[0018] Figure 6 is a schematic diagram of the installation and use state of the valve of the present invention in the oil fume purification system.

[0019] In the figure: 1 - valve body, 2 - left connecting rod body, 3 - pipe bayonet, 4 - connecting rod pressing plate, 5 - steel cable, 6 - tension spring, 7 - two-link rod, 8 - inclined valve plate, 9 - pulling handle, 10 - push rod motor, 11 - right connecting rod body, 12 - fuse pin, 13 - push rod motor mounting seat plate, 14 - synchronous clamping plate, 15 - pipe orifice screw pipe, 16 - tension spring clamp, 17 - cable clip, 18 - internal and external thread nut, 19 - nut pipe, 20 - compression spring, 21 - fuse piece, 22 - pin rod, 23 - oil fume purification unit, 24 - smoke hood, 25 - connecting rod A, 26 - connecting rod B. Specific implementation manner

[0020] See Figures 1-5 , the present invention is a valve with remote fuse control, having a valve body 1, an inclined valve plate 8 is hinged on the valve body, the bottom end of the inclined valve plate is hinged to the valve body, the upper end of the inclined valve plate is equipped with a pulling handle 9, on the outer walls of the left and right sides of the valve body are respectively provided with a left connecting rod body 2 and a right connecting rod body 11, both the left connecting rod body and the right connecting rod body include connecting rod seat plates, on the connecting rod seat plates are provided with pipe orifice clamps 3 and tension spring clamps 16, a pipe orifice screw pipe 15 is clamped on the pipe orifice clamp, a steel cable 5 is passed through the pipe orifice screw pipe; a tension spring 6 is installed on the tension spring clamp, the lower end of the tension spring is connected to a two-link rod 7, the front end of the two-link rod is hinged to the middle part of the inclined valve plate; a connecting rod pressing plate 4 is also provided on the connecting rod seat plate, the connecting rod pressing plate is pin-connected to the middle part of the two-link rod through a fuse pin 12, the end of the two-link rod is connected to the front end of the steel cable through a cable clip 17, the tails of the two steel cables on the left and right connecting rod bodies are both connected to a push rod motor assembly at the same time, and the push rod motor assembly is arranged outside the valve body.

[0021] Further, in this embodiment, the cross-section of the connecting rod pressing plate 4 is a Z-shaped plate, and the connecting rod pressing plate surrounds the two-link rod therein.

[0022] Further, in this embodiment, the fuse pin is composed of an internal and external thread nut 18, a nut pipe 19, a compression spring 20, a fuse piece 21 and a pin rod 22, wherein one end side of the pin rod is connected and welded to the fuse piece, and the other end of the pin rod sequentially passes through the compression spring, the nut pipe and the internal and external thread nut and is inserted into the pin connection hole on the corresponding two-link rod.

[0023] Further, in this embodiment, the push rod motor assembly includes a push rod motor mounting seat plate 13, a push rod motor 10 and a synchronous clamping plate 14, wherein the synchronous clamping plate is arranged on the front end head of the output end of the push rod motor, the push rod motor is installed on the push rod motor mounting seat plate, pipe orifice clamps 3 are respectively provided at both ends of the push rod motor mounting seat plate, a pipe orifice screw pipe is arranged on each pipe orifice clamp, and the two steel cables on both sides respectively pass through the corresponding pipe orifice screw pipes and are connected together through the front synchronous clamping plate to form synchronous action.

[0024] Further, in this embodiment, the two-link is composed of link A23 and link B26, which are hinged. Link A is connected to the tension spring, the fuse pin and the cable clip, and link B is hinged to the inclined valve plate.

[0025] The valve of the present invention is used in cooperation with the oil fume purification unit and the smoke hood involved in the patent applications with application numbers 201910489289.0 and 201910489301.8, mainly used in the smoke hood of the oil fume removal system.

[0026] During use, since the two-link in the present invention adopts the connection structure of the fuse pin and the tension spring, once a fire occurs in the oil fume hood 24 system or there is a situation where local high temperature in the oil fume purification system may cause a fire, the fuse piece in the fuse pin will immediately melt, and the compression spring in it will eject the pin rod. In this way, the tension spring will immediately pull up and retract the inclined valve plate, closing the entire valve, and the fire will not spread to the inside of the smoke hood and the entire oil fume purification system. This structure is much safer and more reliable than the action mode relying on sensors and electric actuators in the prior art, and its stability and safety level have been greatly improved. This is the biggest difference between the solution of the present invention and the prior art solution.

[0027] Conversely, when there is no high-temperature fire, by the extension of the push rod motor, the steel cable will pull the end of the two-link, so that the inclined valve plate opens, and at this time, the oil fume can be normally sucked out by the oil fume purification unit 23 from the opening of the inclined valve plate.

[0028] In the present invention, the steel cables for opening or closing the inclined valve plate on both sides are driven by a single push rod motor assembly at the same time and move synchronously, which is beneficial to the timely closing or opening of the inclined valve plate. At the same time, the push rod motor assembly is arranged outside the valve body. Once a failure occurs in the valve body itself or other components, the push rod motor, as the driving actuator, can still continue to operate to achieve remote control and will not affect the closing or opening of the inclined valve plate, greatly enhancing the reliability.

[0029] In this embodiment, the push rod motor assembly part is separately arranged from the valve body, which can achieve remote control, and the failure rate of the push rod motor assembly caused by environmental influence will also be greatly reduced.

Claims

1. A valve with remote fusing control, having a valve body, on which an inclined valve plate is hinged. The bottom end of the inclined valve plate is hinged to the valve body, and a pulling handle is installed at the upper end of the inclined valve plate. It is characterized in that: On the outer walls on the left and right sides of the valve body, a left connecting rod body and a right connecting rod body are respectively provided. Both the left connecting rod body and the right connecting rod body include connecting rod seat plates. On the connecting rod seat plates, pipe orifice clamps and tension spring clamps are provided. A pipe orifice screw pipe is clamped on the pipe orifice clamp, and a steel cable is threaded through the pipe orifice screw pipe; a tension spring is installed on the tension spring clamp, and the lower end of the tension spring is connected to a two-link rod. The front end of the two-link rod is hingedly connected to the middle part of the inclined valve plate; a connecting rod pressure plate is also provided on the connecting rod seat plate. The connecting rod pressure plate is connected to the middle part of the two-link rod through a fuse pin pin shaft. The end of the two-link rod is connected to the front end of the steel cable. The tails of the two steel cables on the left and right connecting rod bodies are both connected to a push rod motor assembly at the same time. The push rod motor assembly is arranged outside the valve body; the fuse pin is composed of an internal and external thread nut, a nut pipe, a compression spring, a fuse piece and a pin rod. One end side of the pin rod is connected and welded to the fuse piece, and the other end of the pin rod sequentially passes through the compression spring, the nut pipe and the internal and external thread nut and is inserted into the pin shaft connection hole on the corresponding two-link rod; the push rod motor assembly includes a push rod motor mounting seat plate, a push rod motor and a synchronous clamping plate. The synchronous clamping plate is arranged on the front end head of the output end of the push rod motor. The push rod motor is installed on the push rod motor mounting seat plate. Pipe orifice clamps are respectively provided at both ends of the push rod motor mounting seat plate. A pipe orifice screw pipe is arranged on each pipe orifice clamp. The steel cables on both sides pass through the corresponding pipe orifice screw pipes and are connected together through the synchronous clamping plate at the front to form a synchronous action; the two-link rod is composed of a link A and a link B, and the two are hingedly connected. The link A is connected to the tension spring, the fuse pin and the cable clip, and the link B is hingedly connected to the inclined valve plate.

2. The valve with remote fusing control according to claim 1, wherein: The cross section of the connecting rod pressure plate is a Z-shaped plate, and the connecting rod pressure plate surrounds the two-link rod therein.

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