Traction Straight-through Deluge Valve Main Valve

Abstract

The present invention discloses a main valve of a traction direct-through shower valve, comprising a valve body, a valve cover, a diaphragm, a traction piston, a diaphragm pressure plate, a traction connecting rod, a valve body connecting rod, a valve plate connecting rod, a rotating cover body and a mounting hole cover. A piston guide is provided on the side of the valve body, and the traction piston is slidably arranged in the piston guide along the left and right directions. The valve cover is flange-connected with the piston guide, the diaphragm pressure plate is fixedly connected with the traction piston, the middle part of the diaphragm is clamped between the diaphragm pressure plate and the traction piston, the edge of the diaphragm is clamped between the valve cover and the piston guide, and threaded through holes are provided on the side wall of the valve body and the valve cover. When the traction piston slides along the piston guide, the rotating cover body can contact or separate with the internal sealing end face. Compared with the prior art, the main valve of the traction direct-through shower valve of the present invention makes the flow passage close to direct after the valve plate is opened, thereby reducing flow loss.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a low-flow-loss, easy-to-process, and more reliable traction straight-through deluge valve main valve for an automatic water sprinkler fire extinguishing system. Background Art

[0002] Deluge valve is a control valve that achieves automatic water supply by controlling the fire water supply pipeline. There are two main types of deluge valves on the market: one is diaphragm type, which plays a role of pressure bearing and sealing, but has the disadvantages of large flow loss, high cost and difficulty in making the diaphragm, and limited use pressure; the other is lever type, which has the disadvantages of only being able to be installed vertically, having many accessories and high processing costs. Summary of the invention

[0003] The purpose of the present invention is to provide a traction direct-acting deluge valve main valve which has low cost, long service life, is convenient for maintenance and can be used in an automatic sprinkler fire extinguishing system with relatively high pressure.

[0004] To achieve the above object, the present invention provides the following solutions:

[0005] The present invention discloses a main valve of a traction direct-through rain shower valve, comprising a valve body, a valve cover, a diaphragm, a traction piston, a diaphragm pressure plate, a traction connecting rod, a valve body connecting rod, a valve plate connecting rod, a rotating cover body and a mounting hole cover, wherein the valve body is connected through from top to bottom to form a flow passage, the lower part of the valve body is a stepped structure and has an internal sealing end face, a piston guide part is arranged on the side of the valve body, the traction piston is slidably arranged in the piston guide part along the left and right directions, the valve cover is flange-connected to the piston guide part, the diaphragm pressure plate is fixedly connected to the traction piston, the middle part of the diaphragm is clamped between the diaphragm pressure plate and the traction piston, the edge of the diaphragm is clamped between the valve cover and the piston guide part, the valve body Threaded through holes are provided on the side wall and the valve cover, and a mounting hole is also provided on the side of the valve body, and the mounting hole cover is sealed and fixed at the mounting hole, the first end of the traction link, the first end of the valve body link and the first end of the valve plate link are rotatably connected, the second end of the traction link is rotatably connected to the side of the traction piston away from the diaphragm, the second end of the valve body link is rotatably connected to the upper inner wall of the valve body, the second end of the valve plate link is rotatably connected to the upper part of the rotating cover body, and one end of the rotating cover body is rotatably connected to the lower inner wall of the valve body, and when the traction piston slides along the piston guide portion, the rotating cover body can contact or separate from the internal sealing end surface.

[0006] Preferably, the rotating cover body includes a valve plate, a sealing rubber plate and a valve plate pressure plate, the valve plate pressure plate is fixedly connected to the valve plate, the sealing rubber plate is clamped between the valve plate pressure plate and the valve plate, the sealing rubber plate is used to seal and contact or separate with the internal sealing end face, and the valve plate is rotatably connected to the lower inner wall of the valve body and the second end of the valve plate connecting rod respectively.

[0007] Preferably, a first connecting portion protruding upward is provided in the middle of the valve plate, and a second connecting portion protruding upward is provided at one end of the valve plate. The first connecting portion is rotatably connected to the second end of the valve plate connecting rod through a pin, and the second connecting portion is rotatably connected to the lower inner wall of the valve body through a pin.

[0008] Preferably, the lower surface of the valve plate has a rubber plate groove, and the sealing rubber plate is embedded in the rubber plate groove.

[0009] Preferably, the first end of the traction link, the first end of the valve body link and the first end of the valve plate link are simultaneously penetrated by a pin shaft to achieve rotational connection, the second end of the traction link is rotationally connected to the side of the traction piston away from the diaphragm through a pin shaft, the second end of the valve body link is rotationally connected to the upper inner wall of the valve body through a pin shaft, and the second end of the valve plate link is rotationally connected to the upper part of the rotating cover body through a pin shaft.

[0010] Preferably, the valve cover has a conical inner wall, the cover opening diameter of the valve cover is larger than the cover bottom diameter of the valve cover, and the portion of the valve body opposite to the valve cover is also conical.

[0011] Preferably, a pressure plate groove is provided on the bottom of the valve cover, and the pressure plate groove is used to accommodate the diaphragm pressure plate.

[0012] Preferably, the threaded through hole on the valve cover is located at the bottom center of the pressure plate groove.

[0013] Compared with the prior art, the present invention has achieved the following technical effects:

[0014] The main valve of the traction direct rain shower valve of the present invention makes the flow passage close to direct after the valve plate is opened, reducing the flow loss. In addition, it has a relatively simple structure, low cost, long service life, and convenient maintenance, and can be used in automatic water sprinkler fire extinguishing systems with high pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the traction direct-through deluge valve of this embodiment when the main valve is closed;

[0017] Figure 2 This is a schematic diagram of the structure of the traction direct-through deluge valve of this embodiment when the main valve is opened;

[0018] Explanation of the reference numerals: 1. valve body; 2. valve cover; 3. diaphragm; 4. traction piston; 5. diaphragm pressure plate; 6. traction connecting rod; 7. valve body connecting rod; 8. valve plate connecting rod; 9. valve plate; 10. sealing rubber sheet; 11. valve plate pressure plate; 12. pin shaft; 13. mounting hole cover; 14. threaded through hole; 15. screw. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] The purpose of the present invention is to provide a traction direct-acting deluge valve main valve which has low cost, long service life, is convenient for maintenance and can be used in an automatic sprinkler fire extinguishing system with relatively high pressure.

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-2 As shown, this embodiment provides a traction straight-through rain shower valve main valve, including a valve body 1, a valve cover 2, a diaphragm 3, a traction piston 4, a diaphragm pressure plate 5, a traction connecting rod 6, a valve body connecting rod 7, a valve plate connecting rod 8, a rotating cover body and a mounting hole cover 13.

[0023] The valve body 1 is connected from top to bottom to form a flow passage, which can be opened and closed. A piston guide is provided on the side of the valve body 1, and the traction piston 4 is slidably arranged in the piston guide along the left and right directions. The valve cover 2 is flange-connected to the piston guide, the diaphragm pressure plate 5 is fixedly connected to the traction piston 4, the middle of the diaphragm 3 is clamped between the diaphragm pressure plate 5 and the traction piston 4, and the edge of the diaphragm 3 is clamped between the valve cover 2 and the piston guide. A control chamber is formed between the diaphragm 3 and the valve cover 2, and threaded through holes 14 are provided on the side wall of the valve body 1 and the valve cover 2. A mounting hole is also provided on the side of the valve body 1, and a mounting hole cover 13 is sealed and fixed at the mounting hole. The first end of the traction link 6, the first end of the valve body link 7 and the first end of the valve plate link 8 are rotatably connected, the second end of the traction link 6 is rotatably connected to the side of the traction piston 4 away from the diaphragm 3, the second end of the valve body link 7 is rotatably connected to the upper inner wall of the valve body 1, the second end of the valve plate link 8 is rotatably connected to the upper part of the rotating cover body, and one end of the rotating cover body is rotatably connected to the lower inner wall of the valve body 1. The lower part of the valve body 1 is a stepped structure and has an internal sealing end face. When the traction piston 4 slides along the piston guide, the rotating cover body can contact or separate from the internal sealing end face to achieve the closing or opening of the flow channel. The cavity located at the upper part of the rotating cover body inside the valve body 1 is the upper cavity, and the cavity located at the lower part of the rotating cover body is the lower cavity.

[0024] The working principle of the main valve of the traction direct rain shower valve is as follows: when the liquid enters the control chamber from the threaded through hole 14 on the valve cover 2, the pressure in the control chamber gradually increases. When it increases to a certain value, it pushes the diaphragm 3 to drive the traction piston 4 to move, and the rotating cover body rotates clockwise around its left end through the traction connecting rod 6, the valve body connecting rod 7 and the valve plate connecting rod 8, so that the rotating cover body and the internal sealing end face of the valve body 1 are in contact and sealed. When the pressure in the control chamber decreases to a certain value, the liquid pressure in the lower chamber pushes the rotating cover body to rotate counterclockwise around its left end, so that the rotating cover body is separated from the internal sealing end face of the valve body 1, so that the flow passage is close to straight through, reducing flow loss.

[0025] As for the specific structure of the rotating cover body, those skilled in the art can select it according to actual needs, as long as it can be in contact and seal with the internal sealing end face of the valve body 1. In this embodiment, the rotating cover body includes a valve plate 9, a sealing rubber plate 10 and a valve plate pressing plate 11, the valve plate pressing plate 11 is fixedly connected to the valve plate 9, the sealing rubber plate 10 is clamped between the valve plate pressing plate 11 and the valve plate 9, and the valve plate 9 is respectively rotatably connected to the lower inner wall of the valve body 1 and the second end of the valve plate connecting rod 8. The sealing rubber plate 10 has good sealing performance and is used for sealing contact or separation with the internal sealing end face.

[0026] To facilitate connection, this embodiment provides a first connecting portion protruding upward in the middle of the valve plate 9, and a second connecting portion protruding upward is provided at one end of the valve plate 9. The first connecting portion is rotatably connected to the second end of the valve plate connecting rod 8 through a pin shaft 12, and the second connecting portion is rotatably connected to the lower inner wall of the valve body 1 through the pin shaft 12.

[0027] In order to prevent the sealing rubber sheet 10 from sliding, in this embodiment, a rubber sheet groove is provided on the lower surface of the valve plate 9, and the sealing rubber sheet 10 is embedded in the rubber sheet groove.

[0028] There are many ways of rotational connection. In this embodiment, the first end of the traction link 6, the first end of the valve body link 7 and the first end of the valve plate link 8 are simultaneously penetrated by a pin shaft 12 to achieve rotational connection. The second end of the traction link 6 is rotationally connected to the side of the traction piston 4 away from the diaphragm 3 through a pin shaft 12, the second end of the valve body link 7 is rotationally connected to the upper inner wall of the valve body 1 through a pin shaft 12, and the second end of the valve plate link 8 is rotationally connected to the upper part of the rotating cover body through a pin shaft 12.

[0029] When the piston 4 is pulled to move left and right, in order to prevent the diaphragm 3 from being damaged due to frequent friction with the valve cover 2 and the piston guide, the inner wall of the valve cover 2 is set to be conical in this embodiment, and the cover diameter of the valve cover 2 is larger than the cover bottom diameter of the valve cover 2. The part of the valve body 1 opposite to the valve cover 2 is also conical, so the connection part between the valve cover 2 and the piston guide expands outward to accommodate the diaphragm 3, so as to avoid excessive squeezing of the diaphragm 3 and causing its damage.

[0030] Furthermore, in this embodiment, the bottom of the valve cover 2 is provided with a pressure plate groove, which is used to accommodate the diaphragm pressure plate 5, and the threaded through hole 14 on the valve cover 2 is located at the bottom center of the pressure plate groove. The valve cover 2 and the piston guide, the valve plate pressure plate 11 and the valve plate 9, and the mounting hole cover 13 and the valve body 1 are fixedly connected by screws 15.

[0031] The present specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A traction straight-through deluge valve main valve, characterized in that: The utility model comprises a valve body, a valve cover, a diaphragm, a traction piston, a diaphragm pressure plate, a traction connecting rod, a valve body connecting rod, a valve plate connecting rod, a rotating cover body and a mounting hole cover. The valve body is connected from top to bottom to form a flow passage. The lower part of the valve body is a stepped structure and has an internal sealing end face. The side of the valve body is provided with a piston guide part. The traction piston is slidably arranged in the piston guide part along the left and right directions. The valve cover is flange-connected with the piston guide part. The diaphragm pressure plate is fixedly connected with the traction piston. The middle part of the diaphragm is clamped between the diaphragm pressure plate and the traction piston. The edge of the diaphragm is clamped between the valve cover and the piston guide part. The side wall of the valve body and the valve cover are A threaded through hole is provided, and a mounting hole is also provided on the side of the valve body, and the mounting hole cover is sealed and fixed at the mounting hole, the first end of the traction link, the first end of the valve body link and the first end of the valve plate link are rotatably connected, the second end of the traction link is rotatably connected to the side of the traction piston away from the diaphragm, the second end of the valve body link is rotatably connected to the upper inner wall of the valve body, the second end of the valve plate link is rotatably connected to the upper part of the rotating cover body, and one end of the rotating cover body is rotatably connected to the lower inner wall of the valve body, and when the traction piston slides along the piston guide part, the rotating cover body can contact or separate from the internal sealing end surface; The first end of the traction link, the first end of the valve body link and the first end of the valve plate link are simultaneously penetrated by a pin shaft to achieve rotational connection, the second end of the traction link is rotationally connected to the side of the traction piston away from the diaphragm through a pin shaft, the second end of the valve body link is rotationally connected to the upper inner wall of the valve body through a pin shaft, and the second end of the valve plate link is rotationally connected to the upper part of the rotating cover body through a pin shaft; The bottom of the valve cover is provided with a pressing plate groove, and the pressing plate groove is used to accommodate the diaphragm pressing plate; The threaded through hole on the valve cover is located at the bottom center of the pressure plate groove.

2. The traction direct-through deluge valve main valve according to claim 1 is characterized in that: The rotating cover body includes a valve plate, a sealing rubber plate and a valve plate pressure plate. The valve plate pressure plate is fixedly connected to the valve plate. The sealing rubber plate is clamped between the valve plate pressure plate and the valve plate. The sealing rubber plate is used to seal in contact with or separate from the internal sealing end face. The valve plate is rotatably connected to the lower inner wall of the valve body and the second end of the valve plate connecting rod respectively.

3. The traction direct-through deluge valve main valve according to claim 2 is characterized in that: A first connecting portion protruding upward is provided in the middle of the valve plate, and a second connecting portion protruding upward is provided at one end of the valve plate. The first connecting portion is rotatably connected to the second end of the valve plate connecting rod through a pin shaft, and the second connecting portion is rotatably connected to the lower inner wall of the valve body through a pin shaft.

4. The traction direct-through deluge valve main valve according to claim 3 is characterized in that: The lower surface of the valve plate is provided with a rubber plate groove, and the sealing rubber plate is embedded in the rubber plate groove.

5. The traction direct-through deluge valve main valve according to claim 1 is characterized in that: The valve cover has a conical inner wall, the cover opening diameter of the valve cover is larger than the cover bottom diameter of the valve cover, and the portion of the valve body opposite to the valve cover is also conical.

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