Starting valve for perfluorohexanone fire extinguishing device

Abstract

The utility model provides a starting valve for a perfluorohexanone fire extinguishing device, which comprises a starting valve body, an anti-backflow component and a gate are sequentially arranged at an inlet end in the starting valve body, and the anti-backflow component comprises a support frame fixedly mounted in an input pipe of the starting valve body. The side, away from the gate, of the supporting frame is connected with a piston plate through a telescopic rod, the telescopic rod is sleeved with a first spring, the two ends of the first spring abut against the piston plate and the supporting frame respectively, and a piston ring in sealing fit with the piston plate is arranged on the inner wall of the input pipe. The anti-backflow assembly utilizes a linkage structure of a telescopic rod, a first spring and a piston plate to realize dynamic response when the system pressure changes: when the fire extinguishing agent flows forwards, the piston plate compresses the spring under the action of pressure and is separated from a piston ring, and when the system pressure drops suddenly or flows backwards, the elastic force of the spring drives the piston plate to reset quickly; zero-leakage sealing is achieved through cooperation with a piston ring, and the reverse flow problem of a traditional valve is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of emergency rescue fire valve technology, and in particular to a starting valve for a perfluorohexanone fire extinguishing device. Background Technology

[0002] Perfluorohexanone, as a highly efficient and clean fire extinguishing agent, is widely used in fire protection systems. Its extinguishing devices typically use high-pressure stored liquid extinguishing agent released through a quick-acting valve to achieve efficient fire suppression. In related technology, utility model patent CN210355744U discloses an activation valve for a perfluorohexanone fire extinguishing device. However, when this device is in use, backflow can easily occur if the system stops working or the extinguishing agent pressure is insufficient, causing the extinguishing agent to flow backwards and affecting the normal operation of the system. Utility Model Content

[0003] The purpose of this invention is to provide a starting valve for a perfluorohexanone fire extinguishing device. By setting an anti-backflow mechanism, when the system stops working or the extinguishing agent pressure is insufficient, backflow may occur, leading to the problem of reverse flow of the extinguishing agent.

[0004] This utility model provides an activation valve for a perfluorohexanone fire extinguishing device, including an activation valve body. An anti-backflow component and a gate are sequentially arranged at the inlet end inside the activation valve body. A transmission component for driving the gate to open is provided inside the activation valve body. The anti-backflow component includes a support frame fixedly installed inside the input pipe of the activation valve body. A piston plate is connected to the side of the support frame away from the gate via a telescopic rod. A first spring is sleeved on the outside of the telescopic rod. The two ends of the first spring abut against the piston plate and the support frame, respectively. A piston ring is provided on the inner wall of the input pipe to seal with the piston plate.

[0005] Furthermore, the outer end of the input pipe is fitted with a sealing ring for connecting with an external connecting pipe, and the two ends of the sealing ring are connected by bolts.

[0006] Furthermore, the start valve body is provided with a support ring inside for supporting the gate.

[0007] Furthermore, the supporting ring has a semi-circular structure.

[0008] Furthermore, the transmission assembly includes a gear and a rack that mesh with each other, the rack being slidably mounted vertically on the inner wall of the start valve body, and the gear being rotatably mounted inside the start valve body.

[0009] Furthermore, a rotating shaft is rotatably mounted inside the start valve body, the gear is fixedly mounted on the rotating shaft, one end of the rotating shaft passes through the start valve body, and a knob for driving the rotating shaft to rotate is provided on the outside of the start valve body.

[0010] Furthermore, the rotating shaft has a rectangular slot along the axial direction at one end of the starting valve body, and a plug rod that mates with the slot is provided at one end of the knob. The knob has a limiting part, and a limiting frame is fixedly installed on the outside of the starting valve body. A second spring abuts against the limiting part and the starting valve body.

[0011] Furthermore, a groove is provided on the inner wall of the start valve body, and the rack is slidably installed in the groove.

[0012] Furthermore, a sealing gasket is provided on the side of the gate near the inner wall of the starting valve body.

[0013] Furthermore, the support frame is a cross-shaped support frame.

[0014] The beneficial effects of this technical solution are as follows: By setting an anti-backflow component at the inlet end of the starting valve and utilizing the linkage structure of the telescopic rod, the first spring, and the piston plate, a dynamic response to changes in system pressure is achieved: when the extinguishing agent flows in the forward direction, the piston plate compresses the spring under pressure and disengages from the piston ring; when the system pressure drops sharply or flows in the reverse direction, the spring force drives the piston plate to quickly reset, achieving zero-leakage sealing through cooperation with the piston ring, effectively solving the backflow problem of traditional valves. Combined with the optimized design of lifting the gate using the transmission component, reliable opening and closing of the fire extinguishing device is ensured across the entire pressure range. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a half-sectional view of the overall structure of this utility model.

[0017] Figure 2 This utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0018] Figure 3 This is a cross-sectional view of the other half of the overall structure of this utility model.

[0019] Figure 4This is an anatomical view of the overall structure of this utility model.

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure at point B.

[0021] Explanation of reference numerals in the attached drawings: 1-start valve body, 101-slide groove, 2-gate, 3-rack, 4-gear, 5-support frame, 6-piston plate, 7-telescopic rod, 8-first spring, 9-piston ring, 10-sealing ring, 11-rotating shaft, 1101-slot, 12-insertion rod, 13-limiting part, 14-second spring, 15-knob, 16-limiting frame, 17-supporting ring. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Example 1

[0026] like Figures 1-5 As shown, this utility model provides an activation valve for a perfluorohexanone fire extinguishing device, including an activation valve body 1. An anti-backflow component and a gate 2 are sequentially arranged at the inlet end inside the activation valve body 1. A transmission component for driving the gate 2 to open is provided inside the activation valve body. The transmission component includes a gear 4 and a rack 3 that mesh with each other. A sliding groove 101 is provided on the inner wall of the activation valve body 1. The rack 3 is slidably installed in the sliding groove 101. A rotating shaft 11 is rotatably installed inside the activation valve body 1. The gear 4 is fixedly installed on the rotating shaft 11. One end of the rotating shaft 11 passes through the activation valve body 1. A knob 15 for driving the rotating shaft 11 to rotate is provided on the outer side of the activation valve body.

[0027] Correspondingly, in order to enable the rotating shaft 11 to rotate and drive the gate 2 to rise and then lock its position, a rectangular slot 1101 is provided axially at one end of the rotating shaft 11 that passes through the start valve body 1. One end of the knob 15 is provided with a plug rod 12 that cooperates with the slot 1101. The knob 15 is provided with a limiting part 13. A limiting frame 16 is fixedly installed on the outside of the start valve body 1. A limiting hole is provided on the limiting frame 16 that cooperates with the outside of the limiting part 13. A second spring 14 abuts between the limiting part 13 and the start valve body 1. When it is necessary to raise the gate 2, the knob 15 is pressed axially along the rotating shaft 11 to compress the second spring 14. At this time, the limiting part 13 disengages from the limiting hole on the limiting frame 16, and the rotating shaft 11 can rotate to drive the gate 2 to rise. After the gate 2 is raised to a certain height, the knob 15 is released. Under the action of the second spring 14, the outside of the limiting part 13 re-cooperates with the limiting hole to prevent the rotating shaft 11 from rotating.

[0028] The valve body 1 has a support ring 17 inside to support the gate 2. The support ring 17 has a semi-circular structure. The support ring 17 can hold the gate 2 in place, ensuring a complete seal at the gate 2. To ensure a good seal, a sealing gasket can be placed on the side of the gate 2 closest to the inner wall of the valve body 1. When the gate 2 is closed, since the pressure on both sides of the piston plate 6 is equal, the piston plate 6 will be in a mating state with the piston ring 9.

[0029] The anti-backflow assembly includes a support frame 5 fixedly installed inside the input pipe of the start valve body 1. The support frame 5 is a cross-shaped support frame 5. A piston plate 6 is connected to the side of the support frame 5 away from the gate 2 via a telescopic rod 7. A first spring 8 is sleeved on the outside of the telescopic rod 7. The two ends of the first spring 8 abut against the piston plate 6 and the support frame 5 respectively. A piston ring 9 is provided on the inner wall of the input pipe to seal with the piston plate 6.

[0030] In order to enable the start valve to be connected to an external pipeline, a sealing ring 10 for connecting to an external connection pipe is fitted on the outer end of the input pipe, and the two ends of the sealing ring 10 are connected by bolts.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A starting valve for a perfluorohexanone fire extinguishing device, characterized in that, The device includes a start valve body. Inside the start valve body, an anti-backflow assembly and a gate are sequentially arranged at the inlet end. Inside the start valve body, there is a transmission assembly for driving the gate to open. The anti-backflow assembly includes a support frame fixedly installed inside the input pipe of the start valve body. On the side of the support frame away from the gate, a piston plate is connected via a telescopic rod. A first spring is sleeved on the outside of the telescopic rod. The two ends of the first spring abut against the piston plate and the support frame, respectively. A piston ring is provided on the inner wall of the input pipe to seal with the piston plate.

2. The starting valve for the perfluorohexanone fire extinguishing device according to claim 1, characterized in that, The outer end of the input pipe is fitted with a sealing ring for connection with an external connecting pipe, and the two ends of the sealing ring are connected by bolts.

3. The starting valve for the perfluorohexanone fire extinguishing device according to claim 1, characterized in that, The start valve body is equipped with a support ring inside for supporting the gate.

4. The starting valve for the perfluorohexanone fire extinguishing device according to claim 3, characterized in that, The supporting ring has a semi-circular structure.

5. The starting valve for the perfluorohexanone fire extinguishing device according to claim 1, characterized in that, The transmission assembly includes a gear and a rack that mesh with each other. The rack is slidably mounted vertically on the inner wall of the start valve body, and the gear is rotatably mounted inside the start valve body.

6. The starting valve for the perfluorohexanone fire extinguishing device according to claim 5, characterized in that, The start valve body has a rotating shaft rotatably mounted inside, the gear is fixedly mounted on the rotating shaft, one end of the rotating shaft passes through the start valve body, and a knob is provided on the outside of the start valve body for driving the rotating shaft to rotate.

7. The starting valve for the perfluorohexanone fire extinguishing device according to claim 6, characterized in that, The rotating shaft passes through one end of the start valve body and has a rectangular slot along the axial direction. One end of the knob is provided with a plug that cooperates with the slot. The knob is provided with a limiting part. A limiting frame is fixedly installed on the outside of the start valve body. A second spring abuts between the limiting part and the start valve body.

8. The starting valve for the perfluorohexanone fire extinguishing device according to claim 5, characterized in that, The inner wall of the start valve body is provided with a sliding groove, and the rack is slidably installed in the sliding groove.

9. The starting valve for the perfluorohexanone fire extinguishing device according to claim 1, characterized in that, A sealing gasket is provided on the side of the gate near the inner wall of the starting valve body.

10. The starting valve for the perfluorohexanone fire extinguishing device according to claim 1, characterized in that, The support frame is a cross-shaped support frame.

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