A new type of flange spherical check valve structure for water supply equipment

Abstract

The present invention discloses a new type of flange spherical check valve structure specially used for water supply equipment, which belongs to the technical field of hydraulic control check valves. It includes a valve body, which includes a shell, a sphere, an orifice plate, a connecting flange, a three-leaf swivel flap, a sealing layer, a water inlet and a water outlet. The top of the shell is fixedly installed with the three-leaf swivel flap through a connecting flange, the water inlet is opened at the bottom of the shell, and the water outlet is opened at the top of the shell. The present invention adds a sealing layer inside the valve body, and the stainless steel sphere is in contact with the inside of the stainless steel valve body, that is, the hard contact is changed to the soft contact between the stainless steel sphere and the sealing side layer, thereby reducing the damage of the sphere inside the valve body, and also reducing the degree of damage to the same place of the plate type or flap type, thereby increasing the stability of the valve body; and the structure is simple, reducing the risk of leakage in the valve body and the cost of maintenance.

Description

Technical Field

[0001] The invention relates to a novel flange spherical check valve structure specially used for water supply equipment, belonging to the technical field of hydraulic control check valves. Background Art

[0002] When the pressurized water supply equipment is in operation, the check valve is pushed to continuously supply water for a long time. When the equipment is shut down or the water pump is rotated, the current water pump is stopped and the high-pressure water in the pipe will flow toward the water pump. The plate or flap in the check valve will become uneven or the flap bearing will shift due to the high-pressure impact (i.e. water hammer). The tiny gap will cause water leakage, resulting in internal circulation between the water supply pumps when the equipment is running. Not only will the equipment not supply water to the outside, but the internal circulation will also increase the water temperature, causing the risk of burning the motor or machine seal, resulting in unstable equipment operation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a new type of flange spherical check valve structure for water supply equipment, which solves the problems of large water hammer noise, internal leakage and low stability generated when the flat plate and flap type structures are checked.

[0004] The technical problem to be solved by the present invention is achieved by adopting the following technical solutions:

[0005] A new type of flange spherical check valve structure specially used for water supply equipment comprises a valve body, the valve body comprises a shell, a sphere, an orifice plate, a connecting flange, a three-leaf swivel flap, a sealing layer, a water inlet and a water outlet, the top of the shell is fixedly mounted with the three-leaf swivel flap through a connecting flange, the water inlet is arranged at the bottom of the shell, the water outlet is arranged at the top of the shell, the connecting flange is mounted on the water outlet, and the interior of the connecting flange is coaxial with the water outlet, the orifice plate is fixedly mounted on the three-leaf swivel flap, the sphere is arranged inside the shell, the sealing layer is fully sealed and fixedly mounted on the inner wall of the shell, and when there is no pressure inside the shell, the sphere contacts the sealing layer under the action of gravity, and when there is pressure at the water inlet, that is, water flows into the shell, under the action of water pressure, the sphere is lifted to the orifice plate, the orifice plate blocks the sphere to prevent blocking the water outlet, and the water passing through the water inlet flows out through the shell and the water outlet in sequence.

[0006] As a preferred example, the connecting flange is fixedly mounted on the top of the shell, the three-leaf rotary vane is fixedly mounted on the connecting flange, and the three-leaf rotary vane is located at a place where the interior of the shell communicates with the interior of the connecting flange.

[0007] As a preferred example, the orifice plate is welded and fixed on the three-leaf rotary vane.

[0008] As a preferred example, the sphere does not contact the inner wall of the shell.

[0009] As a preferred example, the sealing layer is a sealing gasket.

[0010] As a preferred example, the shell and the sphere are both made of stainless steel.

[0011] As a preferred example, the valve body is a plate-type valve body and / or a flap-type valve body.

[0012] The beneficial effects of the present invention are as follows: the present invention adds a sealing layer inside the valve body, and makes the stainless steel ball contact with the inside of the stainless steel valve body, that is, the hard contact is changed to the soft contact between the stainless steel ball and the sealing side layer, thereby reducing the damage of the ball inside the valve body, and also reducing the degree of damage borne by the same force at the same place of the plate type or flap type, thereby increasing the stability of the valve body operation; and the structure is simple, reducing the risk of leakage inside the valve body and the cost of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention;

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of part A.

[0015] In the figure: shell 1, sphere 2, orifice plate 3, connecting flange 4, three-leaf rotary vane 5, sealing layer 6, water inlet 7, water outlet 8. DETAILED DESCRIPTION

[0016] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0017] like Figure 1-2 As shown, a new type of flange spherical check valve structure for water supply equipment includes a valve body, wherein the valve body includes a shell 1, a sphere 2, an orifice plate 3, a connecting flange 4, a three-leaf swivel flap 5, a sealing layer 6, a water inlet 7 and a water outlet 8. The top of the shell 1 is fixedly installed with the three-leaf swivel flap 5 through the connecting flange 4, the water inlet 7 is opened at the bottom of the shell 1, the water outlet 8 is opened at the top of the shell 1, the connecting flange 4 is installed on the water outlet 8, and the interior of the connecting flange 4 is coaxial with the water outlet 8. The orifice plate 3 is fixedly mounted on the three-leaf rotary vane 5, the ball 2 is arranged inside the shell 1, and the sealing layer 6 is fully sealed and fixedly mounted on the inner wall of the shell 1. When there is no pressure inside the shell 1, the ball 2 contacts with the sealing layer 6 under the action of gravity. When there is pressure at the water inlet 7, that is, water flows into the shell 1, the ball 2 is lifted up to the orifice plate 3 under the action of water pressure, and the orifice plate 3 blocks the ball 2 to prevent blocking the water outlet 8. The water passing through the water inlet 7 flows out through the shell 1 and the water outlet 8 in sequence.

[0018] The connecting flange 4 is fixedly mounted on the top of the shell 1 , and the three-leaf swirl flap 5 is fixedly mounted on the connecting flange 4 , and the three-leaf swirl flap 5 is located at a position where the inside of the shell 1 communicates with the inside of the connecting flange 4 .

[0019] The orifice plate 3 is welded and fixed on the three-leaf rotary vane 5 .

[0020] The sphere 2 does not contact the inner wall of the shell 1 .

[0021] The sealing layer 6 is a sealing gasket, and the sealing gasket is fixed on the inner wall of the housing 1 by vulcanization.

[0022] The shell 1 and the sphere 2 are both made of stainless steel.

[0023] The working principle of this device mainly includes the starting process and the non-return process, which are introduced in turn as follows:

[0024] Initial process: the ball 2 and the sealing layer 6 are the main parts of the valve body. The ball 2 is lifted from the sealing layer 6 to the orifice plate 3 fixed on the three-leaf rotary flap 5 by the liquid passing through the water inlet 7, which plays the role of opening the water inlet. Since the orifice plate 3 blocks the ball 2 from continuing to rise, the liquid flowing through the orifice plate 3 and the three-leaf rotary flap 5 flows out from the water outlet 8;

[0025] Check process: When no liquid flows into the water inlet 7 or the liquid introduced in the reverse direction from the water outlet 8 impacts the ball 2, the ball 2 quickly falls back to the sealing layer 6 due to its own weight and the impact. Since the ball 2 is a spherical surface, the force is evenly applied, and all repeated impacts have different surfaces contacting the sealing layer 6, which is less damaging than the plate type or flap type valve at the same point, and the seal is round without any internal leakage, ensuring the safe operation of the valve body.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A new type of flange spherical check valve structure for water supply equipment, including a valve body, characterized in that: The valve body comprises a shell (1), a sphere (2), an orifice plate (3), a connecting flange (4), a three-leaf swivel flap (5), a sealing layer (6), a water inlet (7) and a water outlet (8); the top of the shell (1) is fixedly mounted on the three-leaf swivel flap (5) via the connecting flange (4); the water inlet (7) is provided at the bottom of the shell (1); the water outlet (8) is provided at the top of the shell (1); the connecting flange (4) is mounted on the water outlet (8); the interior of the connecting flange (4) is coaxial with the water outlet (8); the orifice plate (3) is fixedly mounted on the three-leaf swivel flap (5); On the vane (5), the ball (2) is arranged inside the shell (1), and the sealing layer (6) is fully sealed and fixedly installed on the inner wall of the shell (1), and when there is no pressure inside the shell (1), the ball (2) contacts the sealing layer (6) under the action of gravity, and when there is pressure at the water inlet (7), that is, when water flows into the shell (1), under the action of water pressure, the ball (2) is lifted to the orifice plate (3), and the orifice plate (3) blocks the ball (2) to prevent blocking the water outlet (8), and the water passing through the water inlet (7) flows out through the inside of the shell (1) and the water outlet (8) in sequence; The connecting flange (4) is fixedly mounted on the top of the shell (1); the three-leaf swirl flap (5) is fixedly mounted on the connecting flange (4); and the three-leaf swirl flap (5) is located at a position where the inside of the shell (1) communicates with the inside of the connecting flange (4); the orifice plate (3) is welded and fixed on the three-leaf swirl flap (5); The sphere (2) does not contact the inner wall of the shell (1); and the sealing layer (6) is a sealing gasket.

2. According to claim 1, a new type of flange spherical check valve structure for water supply equipment is characterized by: The shell (1) and the sphere (2) are both made of stainless steel.

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