Sewage discharge stop valve

Abstract

The utility model discloses a blow-down stop valve, and belongs to the technical field of blow-down stop valves. Comprising a main body assembly and a cleaning assembly, the main body assembly comprises a metal shell and a valve rod, the circumferential outer wall of the valve rod is sleeved with a fixing ring, a first rubber ring, a gasket and a second rubber ring, the bottom of the valve rod is connected with a valve plate, the cleaning assembly comprises a pressing rod arranged in the valve rod, and the circumferential outer wall of the pressing rod is sleeved with a fixing piece, a positioning ring, a gasket and a rubber piston; the bottom of the pressing rod is connected with a cleaning head. The first rubber ring, the gasket and the second rubber ring of the main body assembly play a sealing role, the valve plate is pressed downwards on the sewage outlet to play a closure sealing role, the overall structure is simple and effective, and the production cost is reduced; in addition, by pressing the pressing cap, the dirt removing head at the bottom of the pressing rod is driven to be pressed downwards into the inner space of the dirt outlet, dirt blocked in the dirt outlet is poked and struck, the dirt is flushed away in cooperation with water flow, and therefore the dirt in the valve is conveniently removed through the device.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage stop valves, and more particularly to a sewage stop valve. Background Art

[0002] A stop valve is a valve used in a piping system, mainly used to cut off or regulate the flow of fluid. A sewage stop valve is a valve used to discharge impurities and sewage in the pipeline. The sewage stop valve has the characteristics of fast discharge speed, easy operation and wide application range.

[0003] Existing sewage shut-off valves are typically designed with complex structures, which increases the difficulty of production and processing, reduces production efficiency, and increases production costs. Furthermore, sewage shut-off valves are prone to clogging when discharging sewage impurities, making it difficult to clean the dirt inside the valve. In view of this, we propose a sewage shut-off valve. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] The purpose of the utility model is to provide a sewage stop valve to solve the problems of high production cost and difficulty in cleaning stains in the valve proposed in the above background technology.

[0006] 2. Technical solution

[0007] A sewage shut-off valve comprises a main body component and a sewage cleaning component;

[0008] The main assembly includes a metal shell, a valve stem is passed through the metal shell from top to bottom, a handwheel and a threaded body are provided on the circumferential outer wall of the valve stem, a fixing ring, a first rubber ring, a gasket and a second rubber ring are sleeved on the circumferential outer wall of the valve stem, a valve plate is connected to the bottom of the valve stem, a sewage inlet is provided on the side of the valve plate, and a sewage outlet is provided at the bottom of the valve plate;

[0009] The cleaning assembly includes a pressure rod that passes through the valve stem from top to bottom, and the outer circumferential wall of the pressure rod is sleeved with a fixing plate, a positioning ring, a gasket and a rubber piston. The bottom of the fixing plate is connected to a spring, the bottom of the positioning ring is connected to the gasket, and the bottom of the pressure rod is connected to a cleaning head.

[0010] Preferably, the metal shell is made of stainless steel, and the inner wall of the metal shell is provided with an internal thread matching the thread of the threaded body.

[0011] Preferably, the cleaning head is made of stainless steel, the cross-section of the cleaning head is trapezoidal, and a hole matching the shape of the cleaning head is provided at the bottom of the valve stem.

[0012] Preferably, a filler is provided above the fixing ring, and the filler is asbestos sealing material.

[0013] Preferably, a pressure cap is connected to the top of the pressure rod, and the pressure rod and the pressure cap are made of stainless steel.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] The utility model discloses a valve stem is driven by the rubber ring of main body component, gasket and rubber ring to play the sealing role, and the valve stem is driven to move downward by rotating the hand wheel, so that the valve plate is pressed downward on the sewage outlet, which plays the role of intercepting and sealing. The overall structure is simple and effective, which reduces the production cost. With the designed sewage cleaning component, it is only necessary to press the pressure cap to drive the pressure rod to move downward, so that the sewage cleaning head at the bottom of the pressure rod is pressed down into the internal space of the sewage outlet, so as to poke the stains blocking the sewage outlet and evacuate the stains. The poke can be repeated to use water flow to wash away the stains, so that the device is more convenient to clean the stains in the valve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic cross-sectional view of the internal structure of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the cleaning component of the utility model;

[0020] Figure 4 This is a schematic diagram of the cross-sectional structure of the cleaning component of the present utility model;

[0021] Explanation of the numbers in the figure: 1. Main assembly; 2. Cleaning assembly; 101. Valve stem; 102. Handwheel; 103. Fixed ring; 104. Rubber ring 1; 105. Threaded body; 106. Washer; 107. Rubber ring 2; 108. Valve plate; 109. Sewage outlet; 110. Sewage inlet; 111. Metal shell; 112. Packing; 201. Pressure rod; 202. Pressure cap; 203. Fixed plate; 204. Spring; 205. Positioning ring; 206. Washer; 207. Rubber piston; 208. Cleaning head. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0024] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0025] See also Figure 1-4 ,The utility model provides a technical solution:

[0026] A sewage stop valve comprises a main body component 1 and a sewage cleaning component 2;

[0027] Specifically, the main body component 1 includes a metal shell 111, and the metal shell 111 passes through the valve stem 101 from top to bottom. The outer wall of the valve stem 101 is welded with a hand wheel 102 and a threaded body 105. The threaded body 105 is provided with an external thread to facilitate the rotation of the valve stem 101. The outer wall of the valve stem 101 is sleeved with a fixed ring 103, a rubber ring 104, a gasket 106 and a rubber ring 2 107. The fixed ring 103 is welded to the inner wall of the metal shell 111, and the rubber ring 104 is adhesively bonded to the bottom surface of the fixed ring 103. The valve stem 101 can move freely up and down through the holes of the fixed ring 103 and the rubber ring 104. The circumferential side walls of the gasket 106 and the rubber ring 2 107 are adhesively bonded to the inner wall of the metal shell 111. The valve stem 101 can The valve stem 101 is welded with a valve plate 108 at the bottom. The valve plate 108 is circular and has a sewage inlet 110 on the side. The sewage outlet 109 is provided at the bottom of the valve plate 108. The main body assembly 1 plays a sealing role through the rubber ring 104, the gasket 106 and the rubber ring 2 107. The valve stem 101 is driven downward by the rotation of the hand wheel 102, so that the valve plate 108 is pressed downward on the sewage outlet 109 to play a role of intercepting and sealing. The overall structure is simple and effective, which reduces the production cost.

[0028] Furthermore, the cleaning component 2 includes a pressure rod 201 that passes through the valve stem 101 from top to bottom, and the outer wall of the pressure rod 201 is sleeved with a fixing plate 203, a positioning ring 205, a gasket 206 and a rubber piston 207. The fixing plate 203 is welded to the circumferential side wall of the pressure rod 201, and a spring 204 is welded to the bottom of the fixing plate 203. The fixing plate 203 is acted upon by the elastic force of the spring 204 to drive the pressure rod 201 to be tightened upward, so that the cleaning head at the bottom of the pressure rod is hidden in the hole, and the bottom of the positioning ring 205 is adhesively bonded to the gasket 206. The gasket 206 is made of polytetrafluoroethylene, which has excellent corrosion resistance, excellent heat resistance, low friction coefficient and excellent sealing performance. The low friction coefficient can reduce the wear caused by friction. The positioning ring 205 is welded to the inner wall of the circumference of the valve stem 101, and the pressure rod 201 can move up and down in the holes of the positioning ring 205 and the gasket 206. The rubber piston 207 is bonded to the circumferential side wall of the pressure rod 201, and the rubber piston 207 moves up and down along the circumferential inner wall of the valve stem 101 with the pressure rod 201. The rubber piston 207 is made of cylindrical rubber material and has good sealing performance, which can prevent sewage from entering the interior of the valve stem 101. The bottom of the pressure rod 201 is connected to a cleaning head 208. By pressing the pressure cap 202, the pressure rod 201 is driven to move downward, and the cleaning head 208 at the bottom of the pressure rod 201 is further pressed down into the internal space of the sewage outlet 109, poking the stains blocked inside the sewage outlet 109 and evacuating the stains. When the downward pressure applied to the pressure cap 202 is released, the upward elastic force of the spring 204 causes the pressure rod 201 to move upward, and the cleaning head 208 returns to the hole in the valve stem 101. The operation can be repeated to poke the stains blocked inside the sewage outlet 109 and use the water flow to flush away the stains, making the device convenient to clean.

[0029] It is worth noting that in order for the inner wall of the metal shell 111 to cooperate with the rotation of the threaded body 105 , the metal shell 111 is made of stainless steel, and the inner wall of the metal shell 111 is provided with an internal thread matching the thread of the threaded body 105 .

[0030] It is worth noting that in order to ensure that the cleaning head 208 fits with the bottom of the valve stem 101, the cleaning head 208 is made of stainless steel, the cross-section of the cleaning head 208 is trapezoidal, and a hole matching the shape of the cleaning head 208 is opened at the bottom of the valve stem 101.

[0031] In addition, in order to enhance the sealing performance of the device, a filler 112 is provided above the fixing ring 103. The filler 112 is an asbestos sealing material. Asbestos has good high temperature resistance, corrosion resistance and sealing effect.

[0032] Finally, in order to facilitate the rotation of the pressure rod 201, a pressure cap 202 is welded to the top of the pressure rod 201. The pressure rod 201 and the pressure cap 202 are made of stainless steel.

[0033] When the pressure on the pressure cap 202 is released, the upward elastic force of the spring 204 causes the pressure rod 201 to move upward, and the cleaning head 208 returns to the hole in the valve stem 101. The operation can be repeated to poke the stains blocked in the sewage outlet 109 and flush away the stains with water.

[0034] 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 preferred examples of the present invention and are not intended to limit 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, and such changes and improvements 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 sewage stop valve, characterized in that: It comprises a main body component (1) and a cleaning component (2); A main body component (1), the main body component (1) comprising a metal shell (111), the metal shell (111) having a valve stem (101) passing through it from top to bottom, the outer circumferential wall of the valve stem (101) being provided with a hand wheel (102) and a threaded body (105), the outer circumferential wall of the valve stem (101) being sleeved with a fixing ring (103), a first rubber ring (104), a gasket (106) and a second rubber ring (107), the bottom of the valve stem (101) being connected to a valve plate (108), a sewage inlet (110) being provided on the side of the valve plate (108), and a sewage outlet (109) being provided at the bottom of the valve plate (108); A cleaning component (2), the cleaning component (2) comprising a pressure rod (201) extending from top to bottom through the interior of the valve stem (101), the circumferential outer wall of the pressure rod (201) being sleeved with a fixing plate (203), a positioning ring (205), a gasket (206) and a rubber piston (207), the bottom of the fixing plate (203) being connected to a spring (204), the bottom of the positioning ring (205) being connected to the gasket (206), and the bottom of the pressure rod (201) being connected to a cleaning head (208).

2. The sewage shut-off valve according to claim 1, characterized in that: The metal shell (111) is made of stainless steel, and the circumferential inner wall of the metal shell (111) is provided with an internal thread matching the thread of the threaded body (105).

3. The sewage stop valve according to claim 2, characterized in that: The cleaning head (208) is made of stainless steel, the cross-section of the cleaning head (208) is trapezoidal, and a hole matching the shape of the cleaning head (208) is provided at the bottom of the valve stem (101).

4. The sewage stop valve according to claim 3, characterized in that: A filler (112) is arranged above the fixing ring (103), and the filler (112) is an asbestos sealing material.

5. The sewage shut-off valve according to claim 4, characterized in that: The top of the pressure rod (201) is connected to a pressure cap (202), and the pressure rod (201) and the pressure cap (202) are made of stainless steel.

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