Rubber-lined center line double-clip butterfly valve

Abstract

The utility model relates to the technical field of wafer butterfly valves, in particular to a rubber lining center line wafer butterfly valve which comprises a wafer butterfly valve body, a valve plate, a rubber lining and a plate periphery rubber ring, the rubber lining is arranged on the inner periphery of the wafer butterfly valve body and extends out of a wafer butterfly valve body circulation opening, and the valve plate is arranged in the wafer butterfly valve body. Through an assembly composed of a wafer butterfly valve body, a valve plate, a rubber lining, a plate periphery rubber ring and a pressurizing assembly, the rubber lining center line wafer butterfly valve with high sealing performance is provided for a pipeline system, the rubber lining is arranged in the wafer butterfly valve body, and meanwhile the plate periphery rubber ring used for further expanding and sealing with the rubber lining is arranged on the periphery of the valve plate. The pressurizing assembly pressurizes or depressurizes the interior of the plate periphery rubber ring, so that the inner cavity of the plate periphery rubber ring is pressurized or depressurized, the sealing performance between the plate periphery rubber ring and the rubber lining in the closing period is adjusted, the stability of closing and cutoff of a pipeline system is guaranteed, and the device is suitable for being used under various temperature conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of wafer butterfly valves, in particular to a rubber-lined centerline wafer butterfly valve. Background Art

[0002] Wafer butterfly valves are used to control the flow and pressure of media in pipelines and are widely used in the petroleum, chemical, food, medicine, papermaking and other industries. Wafer butterfly valves are often used as key components in fluid transmission, regulation and control systems.

[0003] The valve plate of the existing wafer butterfly valve only relies on the elastic seal between the rubber during sealing, and lacks a further air pressurization sealing mechanism, resulting in limited sealing effect between the inner cavity of the wafer butterfly valve body and the valve plate. It is prone to different thermal expansion and contraction under different temperature conditions, which affects the sealing reliability of the wafer butterfly valve. Therefore, a rubber-lined centerline wafer butterfly valve is proposed. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides a rubber-lined centerline wafer butterfly valve to provide a set of highly sealed rubber-lined centerline wafer butterfly valves for the pipeline system. While a rubber lining is provided in the body of the wafer butterfly valve, a plate-circumferential rubber ring is provided on the outer periphery of the valve plate for further expansion and sealing with the rubber lining. The booster component increases or reduces the pressure in the plate-circumferential rubber ring, so that the inner cavity of the plate-circumferential rubber ring is pressurized or relieved, thereby adjusting the sealing between the plate-circumferential rubber ring and the rubber lining during the closing period, ensuring the stability of the closed flow interruption of the pipeline system of this application, and is suitable for use under various temperature conditions.

[0005] The technical solution adopted by the utility model to solve the technical problem is a rubber-lined centerline wafer butterfly valve, which includes a wafer butterfly valve body, a valve plate, a rubber lining and a rubber ring around the plate. The rubber lining is arranged on the inner periphery of the wafer butterfly valve body and extends out of the flow port of the wafer butterfly valve body. The valve plate is arranged in the wafer butterfly valve body. The rubber ring around the plate is sleeved on the outer periphery of both sides of the valve plate, and the inner side is glued and fixed to the valve plate.

[0006] A boosting assembly is installed on the handle of the wafer butterfly valve body.

[0007] By adopting the above technical solution, a set of high-sealing rubber-lined centerline wafer butterfly valves is provided for the pipeline system through the components consisting of the wafer butterfly valve body, valve plate, rubber lining, plate-surrounding rubber ring and booster component. While the rubber lining is arranged inside the wafer butterfly valve body, a plate-surrounding rubber ring is arranged on the outer periphery of the valve plate for further expansion and sealing with the rubber lining.

[0008] Specifically, a shaft is provided in the wafer butterfly valve body, both ends of the shaft are connected to the handle and valve plate of the wafer butterfly valve body, and an air pipe is provided between the booster assembly and the top end of the shaft.

[0009] Specifically, the inner cavity of the rubber ring around the plate is provided with a cavity for inflation and pressurization, the center of the shaft is provided with an air flow channel, and both ends of the air flow channel are respectively connected to the cavity and the air pipe.

[0010] By adopting the above technical solution and providing the rubber ring around the plate, the sealing between the valve plate and the inner cavity of the wafer butterfly valve body can be increased.

[0011] Specifically, the booster assembly includes a piston sleeve and a piston, one end of the piston sleeve is connected to an internal thread sleeve, the internal thread of the internal thread sleeve is inserted with a screw, and one end of the screw located in the piston sleeve is connected to the piston;

[0012] One end of the piston sleeve away from the internal thread sleeve is connected to one end of the air pipe away from the air flow channel.

[0013] By adopting the above technical solution, the pressure in the rubber ring around the plate is increased or reduced by the boosting component, so that the inner cavity of the rubber ring around the plate is pressurized or reduced, thereby adjusting the sealing between the rubber ring around the plate and the rubber lining during the closing period, and ensuring the stability of the closed flow interruption of the pipeline system in this application.

[0014] Specifically, one end of the screw rod away from the piston is connected with a knob.

[0015] The beneficial effects of the present invention are as follows: through the assembly consisting of a clamped butterfly valve body, a valve plate, a rubber lining, a rubber ring around the plate and a booster assembly, a set of high-sealing rubber-lined centerline clamped butterfly valves is provided for the pipeline system. While a rubber lining is arranged in the clamped butterfly valve body, a rubber ring around the plate is arranged on the outer periphery of the valve plate for further expansion and sealing with the rubber lining. The booster assembly pressurizes or relieves the pressure in the rubber ring around the plate, so that the inner cavity of the rubber ring around the plate is pressurized or relieved, thereby adjusting the sealing performance between the rubber ring around the plate and the rubber lining during the closing period, ensuring the stability of the closing and flow interruption of the pipeline system of this application, and being suitable for use under various temperature conditions. It solves the problem that the valve plate of the existing clamped butterfly valve only relies on the elastic seal between the rubbers during the sealing period, lacks a further air pressurization and sealing mechanism, resulting in limited sealing effect between the inner cavity of the clamped butterfly valve body and the valve plate, and is prone to different thermal expansion and contraction under different temperature conditions, affecting the sealing reliability of the clamped butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 It is an overall schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the main cross-section of the present utility model;

[0019] Figure 3For the utility model Figure 1 A in the middle is an enlarged schematic diagram;

[0020] Figure 4 For the utility model Figure 2 The enlarged schematic diagram of point B in the middle;

[0021] Figure 5 This is a schematic diagram of the booster assembly of the present utility model;

[0022] Figure 6 Schematic diagram of the screw of the present utility model;

[0023] In the figure: wafer butterfly valve body 1, valve plate 2, rubber lining 3, booster assembly 4, piston sleeve 41, internal thread sleeve 42, screw 43, piston 44, knob 45, shaft 5, air flow channel 51, rubber ring around the plate 6, cavity 61, air pipe 7. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1-6 As shown, the rubber-lined centerline wafer butterfly valve described in the present invention includes a wafer butterfly valve body 1, a valve plate 2, a rubber lining 3 and a plate-surrounding rubber ring 6. The rubber lining 3 is arranged on the inner periphery of the wafer butterfly valve body 1 and extends out of the flow port of the wafer butterfly valve body 1. The valve plate 2 is arranged in the wafer butterfly valve body 1. The plate-surrounding rubber ring 6 is sleeved on the outer periphery of both sides of the valve plate 2, and the inner side is glued and fixed to the valve plate 2.

[0026] A booster assembly 4 is installed on the handle of the wafer butterfly valve body 1.

[0027] When in use, the butterfly valve body 1, valve plate 2, rubber lining 3, plate-surrounding rubber ring 6 and booster assembly 4 provide a set of highly sealed rubber-lined centerline butterfly valves for the pipeline system. While the rubber lining 3 is provided in the inner village of the butterfly valve body 1, a plate-surrounding rubber ring 6 is provided on the outer periphery of the valve plate 2 for further expansion and sealing with the rubber lining 3. The booster assembly 4 pressurizes or relieves the pressure in the plate-surrounding rubber ring 6, so that the inner cavity of the plate-surrounding rubber ring 6 is pressurized or relieved, thereby adjusting the sealing between the plate-surrounding rubber ring 6 and the rubber lining 3 during the closing period, thereby ensuring the stability of the closed flow interruption of the pipeline system in this application.

[0028] The utility model also includes that a shaft rod 5 is provided in the wafer butterfly valve body 1, both ends of the shaft rod 5 are connected to the handle and valve plate 2 of the wafer butterfly valve body 1, and an air pipe 7 is provided between the boosting component 4 and the top of the shaft rod 5.

[0029] The present invention also includes that the inner cavity of the plate-surrounding rubber ring 6 is provided with a cavity 61 for inflation and pressurization, the center of the shaft 5 is provided with an air flow channel 51, and the two ends of the air flow channel 51 are respectively connected to the cavity 61 and the air pipe 7.

[0030] When in use, the provision of the rubber ring 6 around the plate can enhance the sealing between the valve plate 2 and the inner cavity of the wafer butterfly valve body 1 .

[0031] The present invention also includes that the booster assembly 4 includes a piston sleeve 41 and a piston 44, one end of the piston sleeve 41 is connected to an internal thread sleeve 42, the internal thread sleeve 42 is internally threaded with a screw 43, and one end of the screw 43 located in the piston sleeve 41 is connected to the piston 44;

[0032] One end of the piston sleeve 41 away from the internal threaded sleeve 42 is connected to one end of the air pipe 7 away from the air flow channel 51 .

[0033] When in use, the pressurizing component 4 is used to pressurize or relieve the pressure in the plate-circumferential rubber ring 6, so that the inner cavity of the plate-circumferential rubber ring 6 is pressurized or relieved, thereby adjusting the sealing between the plate-circumferential rubber ring 6 and the rubber lining 3 during the closing period.

[0034] The present invention further includes that one end of the screw rod 43 away from the piston 44 is connected to a knob 45 .

[0035] When the present invention is in use, the butterfly valve body 1 is placed between the two sections of pipes to be connected, and the butterfly valve body 1 is clamped between the flanges of the two sections of pipes by arranging flanges on the pipes. Based on the arrangement of the rubber lining 3, the clamping sealing performance between the butterfly valve body 1 and the pipe can be improved. The shaft rod 5 is driven by the handle of the butterfly valve body 1 to rotate, so that the shaft rod 5 drives the valve plate 2 to rotate in the butterfly valve body 1 to realize the opening and closing of the valve. When it is necessary to further improve the sealing performance of the closure between the butterfly valve body 1 and the valve plate 2, the screw 43 is moved in the internal threaded sleeve 42 by rotating the knob 45, so that the piston 44 is pushed in the piston sleeve 41, so that the air in the piston sleeve 41 is pushed into the cavity 61 of the rubber ring 6 around the plate, so that the rubber ring 6 around the plate expands and further squeezes the rubber lining 3, thereby further improving the sealing performance of the butterfly valve body 1 and the valve plate 2, and improving the accuracy of the closure of the overall butterfly valve to the pipeline system.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A rubber lined centerline wafer butterfly valve, characterized in that: It comprises a wafer butterfly valve body (1), a valve plate (2), a rubber lining (3) and a plate-surrounding rubber ring (6), wherein the rubber lining (3) is arranged on the inner periphery of the wafer butterfly valve body (1) and extends out of the flow port of the wafer butterfly valve body (1), the valve plate (2) is arranged in the wafer butterfly valve body (1), and the plate-surrounding rubber ring (6) is sleeved on the outer periphery of both sides of the valve plate (2), and the inner side is glued and fixed to the valve plate (2); A booster assembly (4) is installed on the handle of the wafer butterfly valve body (1); A shaft (5) is provided in the wafer butterfly valve body (1), and both ends of the shaft (5) are connected to the handle and valve plate (2) of the wafer butterfly valve body (1), and an air pipe (7) is provided between the booster assembly (4) and the top end of the shaft (5); The inner cavity of the plate-surrounding rubber ring (6) is provided with a cavity (61) for inflation and pressurization, and the center of the shaft (5) is provided with an air flow channel (51), and the two ends of the air flow channel (51) are respectively connected to the cavity (61) and the air pipe (7).

2. The rubber lined centerline wafer butterfly valve according to claim 1 is characterized in that: The booster assembly (4) includes a piston sleeve (41) and a piston (44); one end of the piston sleeve (41) is connected to an internal thread sleeve (42); a screw (43) is inserted into the internal thread of the internal thread sleeve (42); one end of the screw (43) located in the piston sleeve (41) is connected to the piston (44); One end of the piston sleeve (41) away from the internal thread sleeve (42) is connected to one end of the air pipe (7) away from the air flow channel (51).

3. The rubber lined centerline wafer butterfly valve according to claim 2 is characterized in that: One end of the screw rod (43) away from the piston (44) is connected to a knob (45).

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