Novel corrugated pipe stop valve

Abstract

The utility model provides a novel corrugated pipe stop valve which comprises a valve body, a feeding port and a discharging port, the feeding port is formed in one side of the bottom of the valve body, the discharging port is formed in the other side of the bottom of the valve body, a valve clack is arranged at the top end of the feeding port, a sealing ring is arranged on the periphery of the valve clack, and a rubber buffer layer is arranged between the sealing ring and the valve clack. A valve rod is arranged in the top end of the valve clack, a fixing plug pin is arranged in the valve clack, a connecting plate is arranged at the top of the valve clack, a welding plate is arranged at the top end of the valve body, a sealing layer is arranged on the periphery of the welding plate, a corrugated pipe is connected to the bottom end of the welding plate in a welded mode, and a valve cover is arranged at the top end of the welding plate. The novel sampling valve is novel in design and simple in structure, the stop valve has a good sealing effect, so that a medium is not prone to leaking in the stop valve, the valve clack can be well protected, the valve clack is not prone to being damaged, the service life of the sampling valve is greatly prolonged, and the novel sampling valve is practical.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a novel bellows stop valve. Background Art

[0002] Bellows stop valve, also called bellows sealed stop valve, forms a metal barrier between the fluid medium and the atmosphere through automatic roll welding, ensuring a zero-leakage design of the valve stem.

[0003] However, the stop valves currently used in the market for industries such as petrochemicals, chemical fiber textiles, plastic textiles, plastic papermaking, electric power steel, printing and dyeing rubber, and food have the following disadvantages: the sealing design is too simple, generally a single-layer seal. Once the seal fails, it will cause material leakage, endangering equipment, personnel, and the environment; the product has a short service life, many maintenance times, and high assembly cost, which can no longer meet people's needs. For this reason, we propose a new type of bellows stop valve. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a new type of bellows stop valve with novel design and simple structure, so that the stop valve has a good sealing effect, so that the medium is not easy to leak inside the stop valve, and the valve disc can be well protected, so that it is not easy to be damaged, which greatly improves the service life of the sampling valve. It is more practical and can solve the problems raised in the above-mentioned background technology.

[0005] The technical problem solved by the utility model is achieved by the following technical solutions:

[0006] A new type of bellows stop valve comprises a valve body, a feed port and a discharge port, wherein the feed port is arranged on one side of the bottom of the valve body, the discharge port is arranged on the other side of the bottom of the valve body, a valve disc is arranged on the top of the feed port, a sealing ring is arranged on the periphery of the valve disc, a rubber buffer layer is arranged between the sealing ring and the valve disc, a valve stem is arranged inside the top of the valve disc, a fixing pin is arranged inside the valve disc, a connecting plate is arranged on the top of the valve disc, a welding plate is arranged on the top of the valve body, a sealing layer is arranged on the periphery of the welding plate, a bellows is welded to the bottom end of the welding plate, a valve cover is arranged on the top of the welding plate, a packing is arranged inside the top of the valve cover, and a packing sleeve is arranged on the top of the packing.

[0007] Furthermore, a support rod is fixedly connected to the top of the valve cover, a support sleeve is arranged at the top of the support rod, and a hand wheel is rotatably connected to the top of the support sleeve.

[0008] Furthermore, a No. 1 fixing screw is arranged on one side of the packing sleeve, and the packing sleeve is fixedly connected to the valve cover through the No. 1 fixing screw, and a No. 2 fixing screw is arranged inside the sealing ring, and the sealing ring is fixedly connected to the valve disc through the No. 2 fixing screw.

[0009] Furthermore, the other end of the fixing pin is located inside the valve stem, and the valve stem is fixedly connected to the valve disc via the fixing pin, the connecting plate is fixedly connected to the valve disc via screws, and the connecting plate is fixedly connected to the valve stem.

[0010] Furthermore, the bottom end of the bellows is fixedly connected to the connecting plate, and the top end of the valve stem is threadedly connected to the hand wheel.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The sealing ring can effectively improve the sealing ability of the valve disc, making it difficult for the medium to leak, which is more practical. The rubber buffer layer has a good buffering effect, so that it is not easy to have impact force when the valve disc contacts the top of the feed inlet, which is convenient for damaging the valve disc, which is more practical.

[0013] 2. Through the combination of the welding plate and the bellows, the medium can be effectively prevented from leaking from the top of the valve cover, and the sealing effect of the sampling valve itself can be further improved. The bellows is corrosion-resistant and impact-resistant, not easy to be damaged, and is more practical. At the same time, through the combination of the bellows and the welding plate, the position of the bellows itself can be well restricted, so that it is not easy to deviate during operation, avoiding affecting its own work. The welding plate is fixedly connected to the valve disc, which can effectively prevent the bellows from rotating, which is more practical.

[0014] 3. The packing has good sealing performance, which can effectively prevent the medium from leaking from the top of the valve cover when the bellows is damaged, further improving the sealing ability of the sampling valve itself, which is more practical, and the packing can be well pressed by the packing sleeve, making it not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the valve disc structure of the utility model. DETAILED DESCRIPTION

[0017] In order to make the technical means for realizing the utility model, creative features, objectives and effects easy to understand, the utility model is further explained below with reference to specific illustrations.

[0018] like Figures 1-2As shown, the valve body 1 is conveniently connected to the external connecting pipe through the feed port 2 and the discharge port 3, so that the stop valve can be operated. When the sampling valve is operating, the hand wheel 18 can drive the valve disc 4 to move through the valve stem 7, so that the valve disc 4 can be separated from the top of the feed port 2, so as to facilitate the flow of the medium inside the valve body 1. When the sampling valve needs to be closed, the hand wheel 18 can be turned again to move the valve stem 7 with the valve disc 4, so that the valve disc 4 is combined with the top of the feed port 2, so that the sampling valve can stop working. Among them, a sealing ring 5 is arranged on the periphery of the valve disc 4, which can effectively improve the sealing ability of the valve disc 4, so that the medium is not easy to leak, which is more practical, and the rubber buffer layer 6 has a good buffering effect, so that the valve disc 4 is not easy to have an impact force when it contacts the top of the feed port 2, which is convenient to damage the valve disc 4, which is more practical. The valve disc 4 is conveniently fixed by the No. 2 fixing screw 20, so as to enhance the stability of the valve disc 4, and the combination of the welding plate 10 and the bellows 12 can effectively Prevent the medium from leaking from the top of the valve cover 13, further improve the sealing effect of the sampling valve itself, and the bellows 12 is corrosion-resistant, impact-resistant, not easy to be damaged, and is more practical. At the same time, through the combination of the bellows 12 and the connecting plate 9, the position of the bellows 12 itself can be well restricted, so that it is not easy to deviate during operation, so as to avoid affecting its own work, and the connecting plate 9 is fixedly connected to the valve disc 4, which can effectively prevent the bellows 12 from rotating, which is more practical. At the same time, the sealing effect of the welding plate 10 can be further increased by the sealing layer 11. Secondly, the packing 14 has good sealing performance, which can effectively prevent the bellows 12 from leaking from the top of the valve cover 13 when it is damaged, further improve the sealing ability of the sampling valve itself, which is more practical, and the packing can be well pressed by the packing sleeve 15, so that it is not easy to loosen. At the same time, the packing sleeve 15 is fixed by the No. 1 fixing screw 19, so that the packing sleeve 15 can work stably, which is more practical.

[0019] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel bellows stop valve, comprising a valve body (1), a feed inlet (2) and a discharge port (3), wherein the feed inlet (2) is arranged on one side of the bottom of the valve body (1), and the discharge port (3) is arranged on the other side of the bottom of the valve body (1), characterized in that: A valve flap (4) is arranged at the top of the feed inlet (2). A sealing ring (5) is arranged on the periphery of the valve body (4), a rubber buffer layer (6) is arranged between the sealing ring (5) and the valve disc (4), a valve stem (7) is arranged inside the top end of the valve disc (4), a fixing pin (8) is arranged inside the valve disc (4), a connecting plate (9) is arranged on the top of the valve disc (4), a welding plate (10) is arranged on the top end of the valve body (1), a sealing layer (11) is arranged on the periphery of the welding plate (10), a bellows (12) is welded to the bottom end of the welding plate (10), a valve cover (13) is arranged on the top end of the welding plate (10), a packing (14) is arranged inside the top end of the valve cover (13), and a packing sleeve (15) is arranged on the top end of the packing (14).

2. According to claim 1, a novel bellows stop valve is characterized in that: The valve cover (13) The top end is fixedly connected to a support rod (16), and the top end of the support rod (16) is provided with a support sleeve. (17), the top end of the support sleeve (17) is rotatably connected to a hand wheel (18).

3. According to claim 2, the novel bellows stop valve is characterized in that: A No. 1 fixing screw (19) is arranged on one side of the packing gland (15), and the packing gland (15) is fixedly connected to the valve cover (13) via the No. 1 fixing screw (19), and a No. 2 fixing screw is arranged inside the sealing ring (5). (20), and the sealing ring (5) is fixedly connected to the valve disc (4) by a No. 2 fixing screw (20).

4. According to claim 1, the novel bellows stop valve is characterized in that: The other end of the fixed latch (8) is located inside the valve stem (7), and the valve stem (7) is connected to the valve disc via the fixed latch (8). (4) fixed connection, the connecting plate (9) is fixedly connected to the valve disc (4) by screws, and the connecting plate (9) is fixedly connected to the valve stem (7).

5. According to claim 1, the novel bellows stop valve is characterized in that: The bottom end of the bellows (12) is fixedly connected to the connecting plate (9), and the top end of the valve stem (7) is threadedly connected to the hand wheel (18).

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