Fire-fighting gate valve convenient to open

Abstract

The utility model relates to the related field of fire-fighting gate valves, in particular to a fire-fighting gate valve convenient to open, which comprises a gate valve body, a valve plate, a valve rod, a handle, an opening, a protective cover, a sealing plate, a sliding frame, a sliding plate, a lubricating sponge, a first spring, a butterfly bolt, a convex plate, an expansion groove, a second spring, a bolt and a threaded hole. According to the gate valve, the lubricating sponge is arranged, lubricating oil is adsorbed in the lubricating sponge, when the valve rod rubs with the lubricating sponge during rotation, the lubricating oil in the lubricating sponge adheres to the valve rod to prevent the valve rod from rusting, and the valve rod is coated with the lubricating oil so that the valve rod can rapidly rotate in the gate valve body; the fire-fighting gate valve can be opened conveniently while the valve rod is rotated conveniently, the situation that fire-fighting time is delayed due to the fact that the valve rod is difficult to rotate is avoided, and practicability of the fire-fighting gate valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of fire-fighting gate valves, in particular to a fire-fighting gate valve which is easy to open. Background Art

[0002] The fire gate valve is a special valve specially designed for use in fire protection systems. Its main function is to quickly and reliably open or close the water flow when needed to control and isolate the fire water supply pipeline to ensure that the fire extinguishing water source can be supplied quickly and effectively when a fire occurs.

[0003] The valve stem of the existing fire gate valve may rust after long-term use. When the valve stem is rusted, it is not conducive to the smooth rotation of the valve stem, which is easy to affect the opening of the gate valve. It may even delay the fire fighting time because the gate valve cannot be opened quickly, reducing the practicality of the fire gate valve. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a fire gate valve that is easy to open to solve the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fire gate valve that is easy to open, comprising a gate valve body, a valve plate slidably installed in the gate valve body, and a valve stem rotatably installed on the top of the valve plate, the valve stem is threadedly matched with the top of the inner side of the gate valve body, and the valve stem passes through the inner side of the gate valve body and is connected to the handle above the gate valve body, the side surface of the gate valve body is provided with an opening, and the side surface of the gate valve body is provided with a protective cover that penetrates the inner side of the opening;

[0006] A sliding frame capable of sliding forward and backward is arranged in the opening, and a sealing plate is detachably installed in the opening;

[0007] The protective cover is provided with a butterfly bolt inside;

[0008] The sliding frame is an open structure at one end close to the valve stem, and a slide plate is movably installed in the sliding frame, the slide plate is connected to the inner side of the sliding frame through a first spring, and a lubricating sponge that fits the valve stem is pasted on the outer surface of the slide plate, and the lubricating sponge absorbs lubricating oil to lubricate the valve stem;

[0009] The butterfly bolt is matched with the inner circle thread of the threaded hole opened on the outer surface of the sealing plate, and the butterfly bolt is rotatably connected with the sliding frame after passing through the threaded hole.

[0010] Preferably, the protective cover is in the shape of a U-shaped shell with two ends penetrated, and the inner bottom end surface of the protective cover extends upwardly and obliquely toward the gate valve body.

[0011] Preferably, an arc-shaped groove is formed at one end of the lubricating sponge close to the valve stem.

[0012] Preferably, a convex plate is provided at the edges of the upper and lower ends of the sealing plate, and the convex plate is fixed to the inner side of the expansion groove provided at the outer end of the opening by bolt locking.

[0013] Preferably, a second spring is installed in the expansion groove, the second spring is tightly attached to the side surface of the convex plate, and the second spring is movably sleeved on the bolt.

[0014] Preferably, the sealing plate and the convex plate are flush with the outer surface of the gate valve body.

[0015] Beneficial effects of the utility model:

[0016] The utility model is provided with a lubricating sponge, in which lubricating oil is absorbed. When the valve stem rotates, friction occurs with the lubricating sponge, and the lubricating oil in the lubricating sponge adheres to the valve stem to prevent the valve stem from rusting. In addition, coating the lubricating oil on the valve stem helps the valve stem to rotate quickly in the gate valve body, making it easier to rotate the valve stem and also easier to open the fire gate valve, thereby avoiding delays in firefighting time due to difficulty in rotating the valve stem and improving the practicability of the fire gate valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall side cross-sectional structure of the fire gate valve of the utility model;

[0018] Figure 2 It is a schematic diagram of the side cross-sectional connection structure of the sealing plate of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the lubricating sponge of the utility model from a top view;

[0020] Figure 4 It is a rear structural schematic diagram of the fire-fighting gate valve of the utility model.

[0021] Among them: gate valve body-1, valve plate-2, valve stem-3, handle-4, opening-5, protective cover-6, sealing plate-7, sliding frame-8, slide plate-9, lubricating sponge-10, first spring-11, butterfly bolt-12, convex plate-13, expansion groove-14, second spring-15, bolt-16, threaded hole-17. DETAILED DESCRIPTION

[0022] In order to further explain the technical solution of the present utility model, it is described in detail through specific embodiments below.

[0023] like Figure 1As shown, the utility model provides a fire gate valve that is easy to open, including a gate valve body 1, a valve plate 2 slidably installed in the gate valve body 1, and a valve stem 3 rotatably installed on the top of the valve plate 2. The valve stem 3 is threadedly matched with the top inner side of the gate valve body 1. The valve stem 3 can rotate horizontally on the top of the valve plate 2, and the valve stem 3 cooperates with the screw hole in the gate valve body 1 to drive the valve plate 3 to move vertically, so as to realize the opening and closing of the fire gate valve, and the valve stem 3 passes through the inner side of the gate valve body 1 and is connected to the handle 4 above the gate valve body 1, so that the valve stem 3 can be driven to rotate quickly by rotating the handle 4;

[0024] When in use, the water inlet and outlet of the gate valve body 1 are respectively connected to the external fire-fighting pipe. When a fire occurs and a fire-fighting water source is needed, the valve stem 3 can be driven to rotate by rotating the handle 4. When the valve stem 3 rotates, it drives the valve plate 2 to move upward, thereby opening the fire-fighting gate valve. At this time, the fire-fighting water can be transported through the gate valve body 1 to extinguish the fire.

[0025] like Figures 2 to 4 As shown, in this embodiment, an opening 5 is vertically opened on the rear end surface of the gate valve body 1, and a protective cover 6 which is connected to the inner side of the opening 5 is installed on the side surface of the gate valve body 1. The protective cover 6 covers the inner side of the opening 5, so that the components in the opening 5 are protected by the protective cover 6;

[0026] A sliding frame 8 capable of sliding forward and backward is provided in the opening 5, and a sealing plate 7 is detachably installed at the rear end of the inner side of the opening 5;

[0027] The protective cover 6 is provided with a butterfly bolt 12;

[0028] The front end of the sliding frame 8 is an open structure, and a sliding plate 9 is movably installed in the sliding frame 8. The sliding plate 9 is connected to the inner side of the sliding frame 8 through a first spring 11. The sliding plate 9 can move forward and backward along the inner side of the sliding frame 8 to drive the lubricating sponge 10 to be closely attached to the outer surface of the valve stem 3. The outer surface of the sliding plate 9 is pasted with a lubricating sponge 10 that fits the valve stem 3. The lubricating sponge 10 absorbs lubricating oil to lubricate the valve stem 3.

[0029] The butterfly bolt 12 is matched with the inner circle thread of the threaded hole 17 opened on the rear end surface of the sealing plate 7, and the butterfly bolt 12 is rotatably connected with the sliding frame 8 after passing through the threaded hole 17, so that the butterfly bolt 12 cooperates with the threaded hole 17 to drive the sliding frame 8 to move horizontally in the opening 5, so that the sliding frame 8 drives the lubricating sponge 10 to fit the valve stem 3;

[0030] The protective cover 6 is a mouth-shaped shape with two ends through, and the inner bottom end surface of the protective cover 6 extends upwardly and tilted toward the gate valve body 1. When there is rainwater in the protective cover 6, the rainwater can slide outward at the inner bottom of the protective cover 6 to reduce the accumulation of rainwater in the protective cover 6.

[0031] The lubricating sponge 10 is provided with an arc-shaped groove at one end close to the valve stem 3, so that the lubricating sponge 10 can be stably attached to the outer surface of the valve stem 3;

[0032] In this embodiment, the rear ends of the upper and lower end surfaces of the sealing plate 7 are each provided with a convex plate 13, and the convex plate 13 is locked and fixed to the inner side of the expansion groove 14 provided at the outer end of the opening 5 by a bolt 16, and the sealing plate 7 can be driven to be fixed and installed synchronously by the convex plate 13;

[0033] In this embodiment, a second spring 15 is installed in the expansion groove 14, the second spring 15 is closely attached to the side surface of the convex plate 13, and the second spring 15 is movably sleeved on the bolt 16, so that the second spring 15 applies elastic force to the convex plate 13, so that the convex plate 13 is driven by the elastic force to quickly discharge the sealing plate 7 outward;

[0034] Among them, the sealing plate 7 and the convex plate 13 are flush with the outer surface of the gate valve body 1, which improves the aesthetics of the connection between the sealing plate 7 and the convex plate 13 and the gate valve body 1;

[0035] When in use, the butterfly bolt 12 can be rotated to drive the sliding frame 8 to move forward along the inner side of the opening 5, and the sliding frame 8 drives the sliding plate 9 and the lubricating sponges 10 to move forward synchronously. When the lubricating sponge 10 contacts the valve stem 3, the butterfly bolt 12 is continuously rotated. The lubricating sponge 10 is elastically compressed by the pressure of the valve stem 3. The pressure of the lubricating sponge 10 on the valve stem 3 can be judged by the rotation angle and position of the butterfly bolt 12. When the lubricating sponge 10 moves forward to the appropriate position, the butterfly bolt 12 is stopped from rotating.

[0036] When the valve stem 3 is rotated, the valve stem 3 rubs against the lubricating sponge 10, and the lubricating oil pre-absorbed in the lubricating sponge 10 is smeared on the valve stem 3. After the valve stem 3 is smeared with the lubricating oil, it can rotate faster and can also reduce the rust of the valve stem 3. The rapid rotation of the valve stem 3 drives the valve plate 2 to move vertically quickly, so as to open the fire gate valve and to facilitate the timely delivery of fire water to extinguish the fire.

[0037] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fire gate valve that is easy to open, comprising a gate valve body, a valve plate slidably mounted in the gate valve body, and a valve stem rotatably mounted on the top of the valve plate, the valve stem being threadedly matched with the top inner side of the gate valve body, and the valve stem passing through the inner side of the gate valve body and connected to a handle above the gate valve body; It is characterized in that An opening is formed on the side surface of the gate valve body, and a protective cover which is in communication with the inner side of the opening is installed on the side surface of the gate valve body; A sliding frame capable of sliding forward and backward is arranged in the opening, and a sealing plate is detachably installed in the opening; The protective cover is provided with a butterfly bolt inside; The sliding frame is an open structure at one end close to the valve stem, and a slide plate is movably installed in the sliding frame, the slide plate is connected to the inner side of the sliding frame through a first spring, and a lubricating sponge that fits the valve stem is pasted on the outer surface of the slide plate, and the lubricating sponge absorbs lubricating oil to lubricate the valve stem; The butterfly bolt is matched with the inner circle thread of the threaded hole opened on the outer surface of the sealing plate, and the butterfly bolt is rotatably connected with the sliding frame after passing through the threaded hole.

2. A fire-fighting gate valve that is easy to open according to claim 1, characterized in that: The protective cover is in the shape of a square with two ends penetrated, and the inner bottom end surface of the protective cover extends upwardly and obliquely toward the gate valve body.

3. A fire-fighting gate valve that is easy to open according to claim 1, characterized in that: An arc-shaped groove is formed at one end of the lubricating sponge close to the valve stem.

4. The fire gate valve that is easy to open according to claim 1 is characterized in that: A convex plate is respectively arranged at the edges of the upper and lower ends of the sealing plate, and the convex plate is locked and fixed to the inner side of the expansion groove opened at the outer end of the opening by bolts.

5. A fire-fighting gate valve that is easy to open according to claim 4, characterized in that: A second spring is installed in the expansion groove, the second spring is tightly attached to the side surface of the convex plate, and the second spring is movably sleeved on the bolt.

6. A fire-fighting gate valve that is easy to open according to claim 4, characterized in that: The sealing plate and the convex plate are both flush with the outer surface of the gate valve body.

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