Fluorine-lined butterfly valve with negative-pressure-resistant structure

Abstract

The utility model discloses a fluorine-lined butterfly valve with a negative-pressure-resistant structure, and relates to the field of fluorine-lined butterfly valve devices. The fluorine-lined butterfly valve with the negative-pressure-resistant structure comprises a butterfly valve unit, and the butterfly valve unit comprises a fluorine-lined butterfly valve body and an actuator arranged on the top of the fluorine-lined butterfly valve body; a butterfly-shaped clack is arranged in the fluorine-lined butterfly valve body, and a flow dividing net is arranged on the side wall of the fluorine-lined butterfly valve body and used for protecting the fluorine-lined butterfly valve body. And a rubber ring and a lining ring are arranged on the side wall of the butterfly-shaped valve and are used for increasing the friction force of the butterfly-shaped valve. According to the fluorine-lined butterfly valve with the negative-pressure-resistant structure, the pressure-resistant assembly is arranged on the fluorine-lined butterfly valve body, the impact force generated when fluid flows can be dispersed through a flow dividing net on the pressure-resistant assembly, the situation that the fluid directly impacts butterfly flaps, and consequently the butterfly flaps are abraded is avoided, meanwhile, the tightness of the butterfly flaps can be improved when the butterfly flaps are closed through a rubber ring and a lining ring, and the service life of the butterfly flaps is prolonged. And the pressure resistance of the fluorine-lined butterfly valve main body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fluorine-lined butterfly valves, in particular to a fluorine-lined butterfly valve with a negative pressure-resistant structure. Background Art

[0002] Fluorine-lined butterfly valve is a component used to realize the on-off and flow control of pipeline system. Its sealing form mostly adopts sealing structure. The sealing material is rubber, polytetrafluoroethylene, etc. The valve stem can make the disc-shaped butterfly plate rotate around the axis to control the opening and closing of the valve. It can control the flow in the pipeline and has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc.

[0003] At present, there is a problem that when the current fluorine-lined butterfly valve is closed, the flowing fluid will continuously and rapidly press the butterfly flap, which is easy to cause the butterfly flap to wear and affect the tightness of the fluorine-lined butterfly valve when it is closed;

[0004] The reason for this problem is that the current fluorine-lined butterfly valve is mainly opened and closed by the rotation of its internal butterfly flap. Since the flow rate of the fluid in the pipeline is fast and the impact force is large, the flowing fluid will quickly press the butterfly flap at the moment the butterfly flap closes. After opening and closing the butterfly flap many times, the fluid will continue to press the butterfly flap, which can easily cause wear of the butterfly flap, resulting in a gap between the butterfly flap and the bushing, affecting the tightness of the fluorine-lined butterfly valve when it is closed. In view of the shortcomings of the existing technology, we propose a negative pressure-resistant fluorine-lined disc valve to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a fluorine-lined butterfly valve with a negative pressure-resistant structure, which solves the problem that at the moment of closing, the flowing fluid of the current fluorine-lined butterfly valve will continuously and rapidly press the butterfly flap, easily causing wear of the butterfly flap and affecting the tightness of the fluorine-lined butterfly valve when closing.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: a negative pressure resistant fluorine-lined butterfly valve, including a butterfly valve unit, the butterfly valve unit includes a fluorine-lined butterfly valve body and an actuator arranged on the top of the fluorine-lined butterfly valve body;

[0007] The interior of the fluorine-lined butterfly valve body is provided with a butterfly-shaped flap, and the side wall of the fluorine-lined butterfly valve body is provided with a pressure-resistant component for protecting it, and the pressure-resistant component includes:

[0008] A flow-dividing net is arranged on the side wall of the fluorine-lined butterfly valve body, and the flow-dividing net is used to protect the fluorine-lined butterfly valve body;

[0009] A rubber ring and a lining ring are arranged on the side wall of the butterfly flap, and the rubber ring and the lining ring are used to increase the friction force of the butterfly flap.

[0010] Preferably, a bushing is fixedly connected to the inner side of the fluorine-lined butterfly valve body, the bushing ring is fixedly connected to the inner side of the bushing, and the butterfly flap is rotatably connected to the inside of the bushing.

[0011] Preferably, a valve stem is provided at the bottom of the actuator, the valve stem passes through the top of the fluorine-lined butterfly valve body, and the butterfly flap is provided on the outer peripheral wall of the valve stem.

[0012] Preferably, the rubber ring is fixedly connected to the outer peripheral wall of the butterfly valve, and the rubber ring is clamped inside the bushing.

[0013] Preferably, the flow diverter net is fixedly connected to the side wall of the circular ring, and the side wall of the circular ring is fixedly connected with a threaded ring.

[0014] Preferably, a thread groove is provided on the side wall of the fluorine-lined butterfly valve body, the thread ring is threadedly connected inside the thread groove, and the thread ring is used to fix the diverter net.

[0015] The utility model discloses a fluorine-lined butterfly valve with a negative pressure-resistant structure, which has the following beneficial effects: the fluorine-lined butterfly valve with a negative pressure-resistant structure is capable of dispersing the impact force during fluid flow by arranging a pressure-resistant component on the fluorine-lined butterfly valve body, and a diverter net that is easy to disassemble and assemble through the pressure-resistant component, thereby avoiding the situation where the fluid directly impacts the butterfly flap, causing the butterfly flap to wear and affecting the sealing performance of the fluorine-lined butterfly valve body. At the same time, the provision of a rubber ring and a lining ring can increase the tightness of the butterfly flap when it is closed, and can further increase the pressure resistance of the fluorine-lined butterfly valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the main body of the fluorine-lined butterfly valve of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the butterfly petal of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rubber ring of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the flow diversion network of the utility model.

[0020] In the figure: 1. Fluorine-lined butterfly valve body; 101. Actuator; 102. Valve stem; 103. Thread groove; 2. Butterfly flap; 201. Rubber ring; 3. Bushing; 301. Bushing; 4. Pressure-resistant component; 401. Diverter net; 402. Thread ring; 403. Ring. DETAILED DESCRIPTION

[0021] 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.

[0022] Please refer to the application embodiment, by providing a fluorine-lined check valve with double-off and double-off functions, centralized filtration and collection of impurities inside the fluorine-lined check valve is achieved.

[0023] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The embodiment of the present application provides a fluorine-lined butterfly valve with a negative pressure-resistant structure, thereby solving the problem that at the moment of closing, the flowing fluid of the current fluorine-lined butterfly valve will continuously and rapidly press the butterfly flap, which may easily cause wear of the butterfly flap and affect the tightness of the fluorine-lined butterfly valve when it is closed.

[0025] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] The utility model embodiment discloses a fluorine-lined butterfly valve with a negative pressure-resistant structure.

[0027] According to the attached Figure 1-4 As shown, the negative pressure resistant fluorine-lined butterfly valve comprises a butterfly valve unit, and the butterfly valve unit comprises a fluorine-lined butterfly valve body 1 and an actuator 101 arranged on the top of the fluorine-lined butterfly valve body 1;

[0028] The specific functions and operations of the fluorine-lined butterfly valve body 1 can refer to the fluorine-lined butterfly valve model D641X-16C.

[0029] A butterfly valve 2 is arranged inside the main body 1 of the fluorine-lined butterfly valve, and a pressure-resistant component 4 for protecting the main body 1 of the fluorine-lined butterfly valve is arranged on the side wall thereof. The pressure-resistant component 4 includes:

[0030] The flow dividing net 401 is arranged on the side wall of the fluorine-lined butterfly valve body 1. The flow dividing net 401 is used to protect the fluorine-lined butterfly valve body 1, and can prevent the fast-flowing fluid from directly impacting the butterfly flap 2, causing the butterfly flap 2 to wear;

[0031] The rubber ring 201 and the lining ring 301 are arranged on the side wall of the butterfly flap 2, and the rubber ring 201 and the lining ring 301 are used to increase the friction and tightness of the butterfly flap 2, so as to avoid the situation that the fluid will impact and rotate the butterfly flap 2 when the butterfly flap 2 is closed.

[0032] The inner side of the fluorine-lined butterfly valve body 1 is fixedly connected with a bushing 3 , the bushing ring 301 is fixedly connected to the inner side of the bushing 3 , and the butterfly flap 2 is rotatably connected to the inside of the bushing 3 .

[0033] A valve stem 102 is disposed at the bottom of the actuator 101 . The valve stem 102 penetrates the top of the fluorine-lined butterfly valve body 1 . The butterfly flap 2 is disposed on the outer peripheral wall of the valve stem 102 .

[0034] The rubber ring 201 is fixedly connected to the outer wall of the butterfly flap 2, and the rubber ring 201 is clamped in the inside of the bushing 3. The rubber ring 201 and the bushing 301 can increase the tightness between the butterfly flap 2 and the bushing 3 when closed, and can increase the pressure resistance of the butterfly flap 2.

[0035] The flow dividing net 401 is fixedly connected to the side wall of the circular ring 403 , and the side wall of the circular ring 403 is fixedly connected with a threaded ring 402 .

[0036] A thread groove 103 is provided on the side wall of the fluorine-lined butterfly valve body 1, and a thread ring 402 is threadedly connected inside the thread groove 103. The thread ring 402 is used to fix the diverter net 401. By rotating the circular ring 403, the thread ring 402 can be threadedly connected to the thread groove 103 on the side wall of the fluorine-lined butterfly valve body 1. At this time, the diverter net 401 can disperse the inflowing fluid, thereby preventing the fluid from directly impacting the butterfly flap 2 and causing damage to the butterfly flap 2.

[0037] When the utility model is in use, the annular member 403 is first rotated to thread the threaded ring 402 into the threaded groove 103 on the side wall of the fluorine-lined butterfly valve body 1, and then the fluorine-lined butterfly valve body 1 is installed on the pipeline. Secondly, the actuator 101 can drive the valve stem 102 and the butterfly flap 2 to rotate, so as to open and close the valve and control the flow of the fluid.

[0038] In summary, compared with the prior art, the present invention has the following beneficial effects: by arranging a pressure-resistant component 4 on the fluorine-lined butterfly valve body 1 and a diverter net 401 that is easy to disassemble and assemble through the pressure-resistant component 4, the impact force during fluid flow can be dispersed, thereby avoiding the fluid directly impacting the butterfly flap 2, causing the butterfly flap 2 to wear and affecting the sealing of the fluorine-lined butterfly valve body 1. At the same time, arranging the rubber ring 201 and the lining ring 301 can increase the tightness of the butterfly flap 2 when it is closed, and can further increase the pressure resistance of the fluorine-lined butterfly valve body 1.

[0039] 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 claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A negative pressure resistant fluorine-lined butterfly valve, comprising a butterfly valve unit, wherein the butterfly valve unit comprises a fluorine-lined butterfly valve body (1) and an actuator (101) arranged on the top of the fluorine-lined butterfly valve body (1); It is characterized in that The fluorine-lined butterfly valve body (1) is provided with a butterfly flap (2) inside, and the side wall of the fluorine-lined butterfly valve body (1) is provided with a pressure-resistant component (4) for protecting the butterfly valve body, and the pressure-resistant component (4) comprises: A flow dividing net (401) is arranged on the side wall of the fluorine-lined butterfly valve body (1), and the flow dividing net (401) is used to protect the fluorine-lined butterfly valve body (1); A rubber ring (201) and a lining ring (301), wherein the rubber ring (201) and the lining ring (301) are arranged on the side wall of the butterfly flap (2), and the rubber ring (201) and the lining ring (301) are used to increase the friction force of the butterfly flap (2).

2. The negative pressure resistant fluorine lined butterfly valve according to claim 1 is characterized by: A bushing (3) is fixedly connected to the inner side of the fluorine-lined butterfly valve body (1), the bushing ring (301) is fixedly connected to the inner side of the bushing (3), and the butterfly flap (2) is rotatably connected to the inside of the bushing (3).

3. The negative pressure resistant fluorine lined butterfly valve according to claim 1 is characterized by: A valve stem (102) is arranged at the bottom of the actuator (101), the valve stem (102) passes through the top of the fluorine-lined butterfly valve body (1), and the butterfly flap (2) is arranged on the outer peripheral wall of the valve stem (102).

4. The negative pressure resistant fluorine lined butterfly valve according to claim 1 is characterized in that: The rubber ring (201) is fixedly connected to the outer peripheral wall of the butterfly flap (2), and the rubber ring (201) is clamped inside the bushing (3).

5. The negative pressure resistant fluorine lined butterfly valve according to claim 1 is characterized in that: The flow dividing net (401) is fixedly connected to the side wall of the circular ring (403), and the side wall of the circular ring (403) is fixedly connected with a threaded ring (402).

6. The negative pressure resistant fluorine lined butterfly valve according to claim 5 is characterized by: A thread groove (103) is provided on the side wall of the fluorine-lined butterfly valve body (1), and the thread ring (402) is threadedly connected inside the thread groove (103). The thread ring (402) is used to fix the flow distribution network (401).

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