A pressure regulating gate valve

Abstract

The present invention provides a pressure regulating gate valve, which belongs to the technical field of gate valves. It solves the problem that the existing gate valves cannot regulate pressure and are prone to wear and damage. The pressure regulating gate valve includes a valve body with a water inlet and a water outlet, a valve stem, a valve cover, a valve seat and a gate plate, and a valve cavity is provided in the valve body to connect the water inlet and the water outlet, a lower inclined tube is provided in an inclined manner in the lower part of the valve body near the water outlet, an upper inclined tube is provided in an inclined manner in the upper part of the valve body near the water outlet, and the upper inclined tube is coaxially arranged with the lower inclined tube, an inclined adjustment component is provided in the valve body and is used to adjust the flow rate of the liquid and is coaxially arranged with the upper inclined tube, and a pressure detection unit is provided on the outer peripheral wall of the valve body at the water outlet, which is fixedly connected with the valve body and is used to detect the pressure in the valve body. The present invention has the advantages of adjustable pressure in the valve body and reduced wear.

Description

Technical Field

[0001] The invention belongs to the technical field of gate valves and relates to a pressure regulating gate valve. Background Art

[0002] The gate valve is a gate plate of an opening and closing part, and the movement direction of the gate plate is perpendicular to the direction of the fluid. When the existing gate valve is fully opened, the pressure before and after the gate plate is almost the same, but when the gate valve is closed or not fully opened, the pressure before and after the gate plate is not the same. The existence of the pressure difference causes the wear of the parts inside the valve body, which reduces the service life of the valve body and even causes cracks in the valve body, causing damage to the valve body and increasing the replacement cost. The existing gate valve can only block the flow and cannot effectively calculate the flow. In addition, the pressure inside the gate valve cannot be adjusted, which makes it easy to damage the gate valve and endanger personal safety. Summary of the invention

[0003] The purpose of the present invention is to provide a pressure regulating gate valve which is convenient for adjusting the pressure in the valve body and reduces wear in view of the above problems existing in the prior art.

[0004] The objectives of the present invention can be achieved through the following technical solutions: a pressure-regulating gate valve, comprising a valve body with a water inlet and a water outlet, a valve stem, a valve cover, a valve seat and a gate plate, and a valve cavity connecting the water inlet and the water outlet is arranged in the valve body, characterized in that a lower inclined tube is arranged obliquely at the lower part of the valve body near the water outlet, an upper inclined tube is arranged obliquely at the upper part of the valve body near the water outlet, and the upper inclined tube is coaxially arranged with the lower inclined tube, an adjusting component is arranged obliquely and used to adjust the liquid flow rate and is coaxially arranged with the upper inclined tube, and a pressure detection unit is arranged on the outer peripheral wall of the valve body at the water outlet, which is fixedly connected with the valve body and used to detect the pressure in the valve body.

[0005] In the above-mentioned pressure-regulating gate valve, the regulating assembly is composed of a regulating shell, a regulating rod and a sealing sleeve. The regulating shell is hollow, and the two ends of the regulating shell extend into the upper inclined tube and the lower inclined tube respectively. The regulating shell is provided with a water inlet on the outer peripheral wall near the gate plate to facilitate the liquid to enter the regulating shell. The sealing sleeve is arranged in the regulating shell, and the sealing sleeve is also hollow, and the two ends of the sealing sleeve extend out of the regulating shell. The regulating rod is arranged in the sealing sleeve, and the two ends of the regulating rod extend out of the sealing sleeve respectively.

[0006] In the above-mentioned pressure-regulating gate valve, a protrusion that protrudes radially outward and contacts the valve body is provided on the outer peripheral wall of the regulating shell located at the lower inclined tube, and a sealing ring for enhancing the sealing is sleeved on the outer peripheral wall of the regulating shell located at the connection with the protrusion, the outer peripheral wall of the regulating shell located at the upper inclined tube is sealed with the valve body, and a sealing ring for enhancing the sealing is also provided between the regulating shell and the valve body.

[0007] In the above-mentioned pressure-regulating gate valve, a protrusion 1 which protrudes radially outward and whose outer wall contacts the inner wall of the lower inclined tube is provided on the outer peripheral wall of the lower end of the sealing sleeve, a sealing ring which enhances the sealing is also provided between the protrusion 1 and the lower inclined tube, and a sealing unit which is fixedly connected thereto and used to enhance the sealing is provided on the upper end of the sealing sleeve.

[0008] In the above-mentioned pressure regulating gate valve, the sealing unit is composed of a connecting cap and a sealing ring gasket, the sealing ring gasket is in conflict with the regulating housing through the connecting cap, and the outer peripheral wall of the sealing sleeve is provided with a protrusion 2 which protrudes radially outward and conflicts with the sealing ring gasket.

[0009] In the above-mentioned pressure-regulating gate valve, the two ends of the regulating rod extending out of the sealing sleeve extend out of the upper inclined tube and the lower inclined tube respectively, the upper end of the regulating rod is provided with an regulating unit fixedly connected thereto and used to control the movement of the regulating rod, and the lower end of the regulating rod is provided with a resistance unit.

[0010] In the above-mentioned pressure-regulating gate valve, the adjusting unit is composed of a sealing shell, an adjusting cap and a limiting ring. The sealing shell is arranged at the opening of the upper inclined tube and is connected with the upper inclined tube by threading. The outer peripheral wall of the sealing shell is provided with a protrusion three which protrudes radially outward and contacts and fits with the end face of the upper inclined tube. The outer peripheral wall of the sealing shell located at the connection with the protrusion three is also provided with a sealing ring for enhancing the sealing performance. A mounting hole for the adjusting rod to pass through is provided on the upper end face of the sealing shell. A sealing ring for enhancing the sealing performance is also provided between the outer peripheral wall of the adjusting rod and the inner peripheral wall of the sealing shell. The limiting ring is arranged in the mounting hole and is connected with the sealing shell by threading. The adjusting cap is arranged on the sealing shell and cooperates with it.

[0011] In the above-mentioned pressure-regulating gate valve, the resistance unit is composed of a spring and a limiting ring sleeve, the limiting ring sleeve is arranged at the lower end of the adjusting rod and is threadedly connected thereto, the spring sleeve is arranged on the adjusting rod, and the two ends of the spring respectively resist the protrusion and the limiting ring sleeve, and a sealing cover fixedly connected thereto is arranged at the opening of the lower inclined tube.

[0012] In the above-mentioned pressure regulating gate valve, the pressure detection unit is provided with a pressure detection gauge.

[0013] In the above-mentioned pressure regulating gate valve, a connection block connected to the valve body and used to limit the regulating shell and enhance the sealing is arranged on the inner peripheral wall of the valve body at the water outlet.

[0014] Compared with the prior art, this pressure regulating gate valve has the following advantages:

[0015] 1. A lower inclined tube is arranged obliquely at the lower part of the valve body near the water outlet, an upper inclined tube is arranged obliquely at the upper part of the valve body near the water outlet, and the upper inclined tube is coaxially arranged with the lower inclined tube, an adjusting component is arranged in the valve body, and a pressure detection unit is arranged on the outer peripheral wall of the valve body at the water outlet. With the arrangement of the above structure, the pressure in the valve body can be adjusted through the pressure detection unit, thereby reducing the pressure difference in the valve body and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the top view structure of the pressure regulating gate valve.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the pressure regulating gate valve.

[0018] In the figure, 1, valve body; 2, lower inclined tube; 3, upper inclined tube; 4, adjustment component; 5, pressure detection unit; 6, adjustment shell; 7, adjustment rod; 8, sealing sleeve; 9, protrusion; 10, sealing ring; 11, protrusion one; 12, sealing unit; 13, connecting cap; 14, sealing ring gasket; 15, protrusion two; 16, adjustment unit; 17, resistance unit; 18, sealing shell; 19, adjustment cap; 20, limit ring; 21, protrusion three; 22, mounting hole; 23, spring; 24, limit ring sleeve; 25, sealing cover; 26, connecting block. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] like Figure 1 , Figure 2As shown, the pressure regulating gate valve comprises a valve body 1 with a water inlet and a water outlet, a valve stem, a valve cover, a valve seat and a gate plate, and a valve cavity for connecting the water inlet and the water outlet is arranged in the valve body 1, a lower inclined tube 2 which is arranged obliquely and connected to the inside of the valve body 1 and is hollow is arranged at the lower part of the valve body 1 near the water outlet, an upper inclined tube 3 which is arranged obliquely and connected to the inside of the valve body 1 and is hollow is arranged at the upper part of the valve body 1 near the water outlet, and the upper inclined tube 3 is arranged coaxially with the lower inclined tube 2, an adjusting component 4 which is arranged obliquely and is used to adjust the flow rate of the liquid and is arranged coaxially with the upper inclined tube 3 is arranged in the valve body 1, and a valve which is fixedly connected to the valve body 1 and partially extends into the valve body 1 and is used to detect the pressure in the valve body 1 is arranged on the outer peripheral wall of the valve body 1 at the water outlet. The pressure detection unit 5 is a pressure detection unit 5, the adjustment component 4 is composed of an adjustment shell 6, an adjustment rod 7 and a sealing sleeve 8 that fits the inner wall of the valve body 1. The adjustment shell 6 is hollow, and the two ends of the adjustment shell 6 extend into the upper inclined tube 3 and the lower inclined tube 2 respectively. The outer peripheral wall of the adjustment shell 6 located near the gate is provided with a water inlet for liquid to enter the adjustment shell 6. The sealing sleeve 8 is arranged in the adjustment shell 6, and the sealing sleeve 8 is also hollow, and the two ends of the sealing sleeve 8 extend out of the adjustment shell 6. The adjustment rod 7 is arranged in the sealing sleeve 8, and the two ends of the adjustment rod 7 extend out of the sealing sleeve 8 respectively. The pressure detection unit 5 is a pressure detection gauge with a detection rod, and the detection rod of the detection gauge extends into the valve body 1 and is located on the right side of the adjustment shell 6.

[0021] To elaborate further, in order to improve the sealing performance of the regulating assembly 4 after assembly, a protrusion 9 is provided on the outer peripheral wall of the regulating shell 6 located at the lower inclined tube 2, which protrudes radially outward and conflicts with the outer peripheral wall of the valve body 1 located at the lower inclined tube 2; a sealing ring 10 for enhancing the sealing performance is sleeved on the outer peripheral wall of the regulating shell 6 located at the connection with the protrusion 9; the sealing ring 10 is arranged above the protrusion 9; the outer peripheral wall of the regulating shell 6 located at the upper inclined tube 3 fits and seals with the inner wall of the valve body 1; and a sealing ring 10 for enhancing the sealing performance is also arranged between the regulating shell 6 and the valve body 1; a protrusion 11 is provided on the outer peripheral wall of the lower end of the sealing sleeve 8 located in the lower inclined tube 2, which protrudes radially outward and the outer wall conflicts with the inner wall of the lower inclined tube 2; the outer peripheral wall of the protrusion 11 A sealing ring 10 for enhancing sealing is also provided between the peripheral wall and the inner peripheral wall of the lower inclined tube 2. The upper end of the sealing sleeve 8 located in the upper inclined tube 3 is provided with a sealing unit 12 which is fixedly connected thereto and is used to enhance sealing. The sealing unit 12 is composed of a connecting cap 13 and a sealing ring gasket 14. The sealing ring gasket 14 is in conflict with the adjusting housing 6 through the connecting cap 13. A protrusion 15 which protrudes radially outward and conflicts with the sealing ring gasket 14 is provided on the outer peripheral wall of the sealing sleeve 8. The two ends of the adjusting rod 7 extending out of the sealing sleeve 8 extend out of the upper inclined tube 3 and the lower inclined tube 2 respectively. The upper end of the adjusting rod 7 located at the upper inclined tube 3 is provided with an adjusting unit 16 which is fixedly connected thereto and is used to control the movement of the adjusting rod 7. The lower end of the adjusting rod 7 located at the lower inclined tube 2 is provided with a conflicting unit Element 17, the adjustment unit 16 is composed of a sealing shell 18, an adjusting cap 19 and a limiting ring 20. The sealing shell 18 is arranged at the opening of the upper inclined tube 3 and is connected with its thread. The outer peripheral wall of the sealing shell 18 located above the external thread is provided with a protrusion 3 21 which protrudes radially outward and contacts and fits with the end face of the upper inclined tube 3. The sealing shell 18 is also sleeved with a sealing ring 10 for enhancing sealing performance on the outer peripheral wall of the connection with the protrusion 3 21. The sealing ring 10 is arranged below the protrusion 3 21. A mounting hole 22 for the adjusting rod 7 to pass through is opened on the upper end surface of the sealing shell 18. The cross section of the mounting hole 22 is in the shape of three steps. The outer peripheral wall of the adjusting rod 7 located at the mounting hole 22 and the inner peripheral wall of the sealing shell 18 are also provided. A sealing ring 10 for enhancing sealing performance is provided, a limiting ring 20 is provided in the mounting hole 22 and is connected to the sealing housing 18 by threaded cooperation, and the limiting ring 20 prevents the adjusting rod 7 from being separated from the sealing housing 18, an adjusting cap 19 is provided on the sealing housing 18 and is linked with it, and the adjusting cap 19 is connected to the sealing housing 18 by threaded cooperation, the resistance unit 17 is composed of a spring 23 and a limiting ring sleeve 24, the limiting ring sleeve 24 is provided at the lower end of the adjusting rod 7 and is threadedly connected thereto, the spring 23 is sleeved on the adjusting rod 7, and the two ends of the spring 23 are respectively in conflict with the protrusion 11 and the limiting ring sleeve 24, and a sealing cover 25 fixedly connected thereto and wrapping the adjusting rod 7 is provided at the opening of the lower inclined tube 2.

[0022] To elaborate further, in order to facilitate the loading and unloading of the adjustment shell 6 and ensure the sealing of the connection, a connecting block 26 connected to the valve body 1 is provided on the inner wall at the water outlet and is used to limit the adjustment shell 6 and enhance the sealing. The connecting block 26 is connected to the valve body 1 by threaded cooperation, and a detection hole is provided on the connecting block 26 for the detection rod to extend into.

[0023] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pressure regulating gate valve, comprising a valve body (1) with a water inlet and a water outlet, a valve stem, a valve cover, a valve seat and a gate plate, wherein a valve cavity is provided in the valve body (1) to connect the water inlet and the water outlet, and characterized in that: The valve body (1) is provided with an inclined lower inclined tube (2) at the lower part near the water outlet, the valve body (1) is provided with an inclined upper inclined tube (3) at the upper part near the water outlet, and the upper inclined tube (3) is coaxially arranged with the lower inclined tube (2), the valve body (1) is provided with an inclined regulating component (4) for regulating the flow rate of liquid and coaxially arranged with the upper inclined tube (3), the outer peripheral wall of the valve body (1) at the water outlet is provided with a pressure detection unit (5) fixedly connected thereto and used for detecting the pressure in the valve body (1), and the regulating component (4) is composed of a regulating shell (6) The regulating housing (6) is hollow, and the two ends of the regulating housing (6) extend into the upper inclined tube (3) and the lower inclined tube (2) respectively. The regulating housing (6) is provided with a water inlet on the outer peripheral wall near the gate plate for facilitating the entry of liquid into the regulating housing (6). The sealing sleeve (8) is arranged in the regulating housing (6), and the sealing sleeve (8) is also hollow, and the two ends of the sealing sleeve (8) extend out of the regulating housing (6). The regulating rod (7) is arranged in the sealing sleeve (8), and the two ends of the regulating rod (7) extend out of the sealing sleeve (8). Outside the sealing sleeve (8), the outer peripheral wall of the regulating shell (6) located at the lower inclined tube (2) is provided with a protrusion (9) that protrudes radially outward and contacts the valve body (1), and the outer peripheral wall of the regulating shell (6) located at the connection with the protrusion (9) is sleeved with a sealing ring (10) for enhancing the sealing performance. The outer peripheral wall of the regulating shell (6) located at the upper inclined tube (3) is in close contact with the valve body (1), and a sealing ring (10) for enhancing the sealing performance is also provided between the regulating shell (6) and the valve body (1). The outer peripheral wall of the lower end of the sealing sleeve (8) is provided with a protrusion that protrudes radially outward and contacts the outer wall. A protrusion (11) abuts against the inner wall of the lower inclined tube (2); a sealing ring (10) is also provided between the protrusion (11) and the lower inclined tube (2) to enhance the sealing performance; a sealing unit (12) is provided at the upper end of the sealing sleeve (8) to be fixedly connected thereto and used to enhance the sealing performance; the sealing unit (12) is composed of a connecting cap (13) and a sealing ring gasket (14); the sealing ring gasket (14) abuts against the adjusting housing (6) through the connecting cap (13); and a protrusion (15) is provided on the outer peripheral wall of the sealing sleeve (8) to protrude radially outward and abut against the sealing ring gasket (14).

2. A pressure regulating gate valve according to claim 1, characterized in that: The two ends of the adjusting rod (7) extending out of the sealing sleeve (8) extend out of the upper inclined tube (3) and the lower inclined tube (2) respectively; the upper end of the adjusting rod (7) is provided with an adjusting unit (16) fixedly connected thereto and used for controlling the movement of the adjusting rod (7); and the lower end of the adjusting rod (7) is provided with a resistance unit (17).

3. A pressure regulating gate valve according to claim 2, characterized in that: The adjustment unit (16) is composed of a sealing shell (18), an adjustment cap (19) and a limit ring (20). The sealing shell (18) is arranged at the opening of the upper inclined tube (3) and is threadedly connected thereto. The outer peripheral wall of the sealing shell (18) is provided with a protrusion (21) which protrudes radially outward and contacts and fits with the end surface of the upper inclined tube (3). The outer peripheral wall of the sealing shell (18) at the connection with the protrusion (21) is also provided with a sealing member to enhance the sealing performance. A sealing ring (10), a mounting hole (22) for the adjusting rod (7) to pass through is opened on the upper end surface of the sealing shell (18), a sealing ring (10) for enhancing the sealing performance is also arranged between the outer peripheral wall of the adjusting rod (7) and the inner peripheral wall of the sealing shell (18), the limiting ring (20) is arranged in the mounting hole (22) and is connected to the sealing shell (18) by threaded engagement, and the adjusting cap (19) is arranged on the sealing shell (18) and is linked to the sealing shell (18).

4. A pressure regulating gate valve according to claim 3, characterized in that: The abutment unit (17) is composed of a spring (23) and a limiting ring (24). The limiting ring (24) is arranged at the lower end of the adjusting rod (7) and is threadedly connected thereto. The spring (23) is sleeved on the adjusting rod (7), and the two ends of the spring (23) are respectively in abutment with the protrusion 1 (11) and the limiting ring (24). A sealing cover (25) is provided at the opening of the lower inclined tube (2) and is fixedly connected thereto.

5. The pressure regulating gate valve according to claim 1, characterized in that: The pressure detection unit (5) is provided with a pressure detection gauge.

6. A pressure regulating gate valve according to claim 1, characterized in that: The valve body (1) is provided with a connection block (26) on its inner peripheral wall at the water outlet, which is connected to the valve body (1) and is used to limit the regulating housing (6) and enhance the sealing performance.

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