Adjusting angle valve for sewage discharge

Abstract

The invention relates to the technical field of valves, in particular to an adjusting angle valve for sewage discharge, and adopts the technical scheme that the adjusting angle valve comprises a first valve body, a second valve body and a third valve body, and a control assembly is mounted on the first valve body and used for controlling opening and closing of the first valve body; a sampling valve is mounted on the first valve body and is used for sampling residual sewage in the angular valve; a pressure adjusting assembly is installed on the first valve body and used for relieving the water hammer effect. A first sealing mechanism and a second sealing mechanism are installed on the control assembly and used for opening and closing the angle valve. The device has the advantages of relieving the water hammer effect and ensuring safe and accurate sampling, and effectively solves the problems that parts of a drainage system are damaged due to the water hammer effect, and the sample reliability is affected due to easy injection pollution during high-pressure sewage sampling.

Description

Technical Field

[0001] The invention relates to the technical field of valves, in particular to a regulating angle valve for sewage discharge. Background Art

[0002] In sewage treatment and drainage systems, regulating angle valves are key components for controlling wastewater flow and regulating its direction. These valves are typically installed at right-angle intersections in sewage pipes. By rotating or lifting the disc, they precisely adjust the cross-sectional area of wastewater flow to meet drainage needs under varying operating conditions.

[0003] However, although the regulating angle valve plays an important role in sewage discharge, there are still technical problems that need to be solved in its practical application.

[0004] On the one hand, when a valve is closed quickly, the water flow velocity in the pipe changes suddenly, which can easily trigger a water hammer effect. Furthermore, because sewage discharge pipes typically have long transmission distances and large pipe diameters, the water flow inertia is significant. The shock wave generated when the valve closes can cause a strong pressure shock to the valve body, pipes, and related connecting components. Long-term effects can cause valve sealing structure failure, pipe vibration, or even rupture, seriously affecting the safety and stability of the drainage system.

[0005] On the other hand, when sampling and testing sewage, due to the high pressure in the pipeline when sewage is discharged, directly opening the sampling port will cause the sewage to be violently sprayed under the action of high pressure, which will not only easily cause sample splashing and pollute the environment, but may also pose a threat to the safety of operators. At the same time, it is difficult to accurately collect representative sewage samples under high-pressure spraying conditions, affecting the reliability of the test results.

[0006] Therefore, it is necessary to propose a regulating angle valve for sewage discharge to solve the above problems. Summary of the Invention

[0007] The purpose of the present invention is to provide a regulating angle valve for sewage discharge, which has the advantages of alleviating the water hammer effect and ensuring safe and accurate sampling, and effectively solves the problem of damage to drainage system components caused by the water hammer effect, and the problem of easy injection contamination and affecting sample reliability during high-pressure sewage sampling.

[0008] To achieve the above object, the present invention provides the following technical solution: a regulating angle valve for sewage discharge, comprising a first valve body, a control assembly mounted on the first valve body, the control assembly being used to control the opening and closing of the first valve body; A sampling valve is installed on the first valve body, and the sampling valve is used to sample the residual sewage in the angle valve; A pressure regulating assembly is installed on the first valve body, and the pressure regulating assembly is used to alleviate the water hammer effect; The control assembly is equipped with a first sealing mechanism and a second sealing mechanism, and the first sealing mechanism and the second sealing mechanism are used for opening and closing the angle valve.

[0009] Preferably, the sampling valve includes a second valve body, and the second valve body is provided with a second liquid inlet end and a second liquid outlet end; A valve stem passes through the second valve body, and a sealing member is provided at one end of the valve stem in the second valve body, and the sealing member is used to seal the second liquid outlet end; The valve stem is elastically connected to the second valve body through a first elastic member. A control rod is installed on the second valve body at the end where the valve stem passes through, and the control rod is used to press the valve stem.

[0010] When the above technical solution is adopted, the second valve body is connected to the angle valve sampling chamber by providing a second liquid inlet end and a second liquid outlet end, and the valve stem passing through the second valve body realizes the sealing control of the second liquid outlet end through a sealing member at one end; The valve stem is elastically connected to the second valve body through the first elastic member and has an automatic reset function to maintain the normally closed state of the sampling channel. The control rod at the outlet end of the valve stem adopts a push-type design, which is used by the operator to manually overcome the elastic force of the first elastic member to push the valve stem to move, thereby opening the second liquid outlet end to complete sampling.

[0011] Preferably, the pressure regulating assembly includes a sealing plate, on which mounting bolts are installed, the mounting bolts being used for fixing the sealing plate and the angle valve, the sealing plate being inserted with a base plate through a reserved hole, the bottom of the base plate being installed with a mounting screw, the bottom of the mounting screw passing through the reserved hole and being threadedly installed with a mounting nut; A third sealing plug is installed on the bottom plate through a second elastic member, and a third sealing ring is installed on the third sealing plug.

[0012] When the above technical solution is adopted, the sealing plate is fixedly installed with the angle valve pressure regulating pipe by means of mounting bolts. The reserved hole on the sealing plate adopts a plug-in structure to cooperate with the base plate. The mounting screw at the bottom of the base plate passes through the reserved hole and is fixed by the mounting nut thread, thereby achieving a fixed installation of the base plate on the sealing plate. The bottom plate is elastically connected to the third sealing plug through the second elastic piece. The third sealing ring on the third sealing plug is made of high-pressure resistant rubber material and is in dynamic contact with the inner wall of the pressure-regulating pipe to achieve sealing. When the water hammer pressure exceeds the pre-tightening force of the second elastic piece, the third sealing plug is subjected to force, thereby alleviating the water hammer effect.

[0013] Preferably, the first valve body includes a first liquid inlet end, a pressure regulating pipe and a first liquid outlet end, and a sampling cavity is provided in the first valve body on the side opposite to the pressure regulating pipe and the first liquid outlet end, and the sampling cavity is used to temporarily store the sewage that has not been completely discharged in the angle valve; The bottom of the sampling chamber is opened and connected with a sampling tube, which is connected with the sampling valve; The first liquid inlet end is used for installing the second sealing mechanism, and the inner wall of the first liquid inlet end is provided with limiting grooves on both the front and rear sides, and the limiting grooves are used to guide the movement trajectory of the second sealing mechanism; The pressure regulating pipe is used for installing the pressure regulating assembly. A hole is opened on the pressure regulating pipe and connected to a first connecting pipe, and a pressure gauge is installed on the first connecting pipe. The first liquid outlet is used for installing the first sealing mechanism. A guide frame is installed on the outer side of the first liquid outlet. A guide groove is provided on the guide frame. The guide groove is used to guide the movement trajectory of the control component. A protective cover is installed on the guide frame, and the protective cover is used to shield the exposed mechanical transmission structure in the control component. A mounting frame is installed on the guide frame inside the protective cover.

[0014] When the above technical solution is adopted, the sampling chamber of the first valve body is opened on the side opposite to the pressure regulating pipe and the first liquid outlet end, so as to temporarily store the sewage that has not been completely discharged from the angle valve. The sampling tube at the bottom of the sampling chamber adopts a connecting structure to be connected to the sampling valve, so as to guide the temporarily stored sewage to the sampling valve for external discharge. The limiting grooves on the front and rear sides of the inner wall of the first liquid inlet end adopt a guide groove structure to guide the movement trajectory of the second sealing mechanism; The first connecting pipe on the pressure regulating pipe adopts an open hole connection design and is equipped with a pressure gauge to achieve real-time monitoring of the pressure in the pipeline; The guide groove provided on the guide frame outside the first liquid outlet adopts a linear groove structure, which is used to guide the movement trajectory of the rack in the control component; The protective cover on the guide frame adopts a metal cover structure to shield and protect the exposed mechanical transmission structure of the control component. The mounting frame inside the protective cover adopts a bracket design for the rotation installation of the gear in the first sealing mechanism.

[0015] Preferably, the first valve body further comprises a sealing assembly, and the sealing assembly is used to seal the connection between the angle valve and the control assembly.

[0016] When adopting the above technical solution, the sealing assembly adopts a composite structure of multi-layer rubber sealing rings and metal pressure rings to achieve sealing at the connection between the angle valve and the control assembly. The sealing assembly is installed at the connection between the first valve body and the adjusting screw through interference fit, and has the performance of sewage corrosion resistance and high-pressure sealing.

[0017] Preferably, the control assembly includes a hand wheel, a connecting frame is rotatably mounted on the hand wheel, and a limit rod and a rack are mounted on the connecting frame; The limiting rod is in dynamic contact with the guide frame to guide the movement trajectory of the rack; The rack is slidably mounted in the guide groove.

[0018] When the above technical solution is adopted, the hand wheel is rotatably connected to the limit rod and the rack through the connecting frame. The limit rod adopts a cylindrical rod structure and is in dynamic contact with the guide frame to guide the movement trajectory of the rack. The rack adopts a linear rack structure and is slidably installed in the guide groove, meshing with the gear of the first sealing mechanism. The hand wheel is rotated to drive the rack to move linearly, thereby controlling the opening and closing of the first sealing mechanism.

[0019] Preferably, the first sealing mechanism includes a first sealing plug, wherein the front and rear ends of the first sealing plug respectively pass through the first liquid outlet and are fixedly mounted with gears, the gears being rotatably mounted via the mounting frame and the guide frame, and the gears being meshed with the rack; A first sealing ring is installed on the first sealing plug, and the first sealing ring is in dynamic contact with the inner wall of the first liquid outlet end.

[0020] When the above technical solution is adopted, the gears at the front and rear ends of the first sealing plug are rotatably mounted through the mounting frame and the guide frame, and the gears are meshed with the rack to realize the conversion of the linear movement of the rack into the rotational movement of the gear; The first sealing ring on the first sealing plug is made of fluororubber and is in dynamic contact with the inner wall of the first liquid outlet end. It has sewage corrosion resistance and high sealing performance, thereby realizing sealing control of the first liquid outlet end.

[0021] Preferably, the second sealing mechanism comprises a second sealing plug, on which a second sealing ring is mounted, and the second sealing ring is in dynamic contact with the inner wall of the first liquid inlet end; Sealing sleeves and bearings are respectively installed on both sides of the second sealing plug. A liquid inlet hole is opened at the bottom of the sealing sleeve. The liquid inlet hole is used to connect the first liquid inlet end and the pressure regulating pipe after the angle valve is closed.

[0022] When the above technical solution is adopted, the second sealing ring on the second sealing plug is made of nitrile rubber and is in dynamic contact with the inner wall of the first liquid inlet end to achieve sealing between the second sealing plug and the first liquid inlet end; The liquid inlet hole at the bottom of the sealing sleeve on one side of the second sealing plug adopts a circular hole structure, which is used to connect the first liquid inlet end and the pressure regulating pipe after the angle valve is closed, so that high-pressure sewage can enter the pressure regulating pipe through the liquid inlet hole for pressure release; The bearing on the other side of the second sealing plug adopts a deep groove ball bearing structure, which is used for the rotation support of the adjusting screw to reduce the friction resistance when the adjusting screw rotates.

[0023] Preferably, an adjusting screw is installed in the bearing, the adjusting screw is threadedly connected to the sealing assembly, and one end of the adjusting screw passing through the sealing assembly is fixedly connected to the handwheel.

[0024] When adopting the above technical solution, the adjusting screw is installed in the second sealing plug through a bearing, and is threadedly connected to the sealing assembly. One end of the adjusting screw passing through the sealing assembly is fixedly connected to the handwheel, and the adjusting screw is driven to rotate by turning the handwheel. The principle of threaded transmission is used to push the second sealing plug to move linearly along the limit groove, thereby realizing the opening and closing control of the first liquid inlet end.

[0025] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a pressure-regulating component on the first valve body. When the valve is closed quickly, causing a water hammer effect and resulting in a sudden increase in pressure in the pipeline, the pressure-regulating component can release part of the high-pressure water flow, effectively alleviating the pressure impact of the water hammer shock wave on the valve body and the pipeline, thereby achieving the effect of protecting the drainage system components and improving safety and stability.

[0026] The present invention provides a sampling valve on the first valve body. When sampling, the opening of the sampling valve is controlled so that the sewage remaining in the angle valve is slowly discharged through the sampling valve, thereby avoiding sample splashing and environmental pollution caused by direct injection of high-pressure sewage. In the non-sampling state, the sampling valve remains closed, maintaining the closed state of the sampling channel, thereby ensuring sampling safety and improving the accuracy and reliability of sample collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a viewing angle of the present invention; Figure 2 It is another perspective structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 Schematic diagram of the cross-sectional structure of the first valve body of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the sampling valve of the present invention; Figure 6 Schematic diagram of the cross-sectional connection structure between the control assembly and the second sealing mechanism of the present invention; Figure 7 This is a schematic structural diagram of the first sealing mechanism of the present invention; Figure 8 This is a schematic diagram of the explosion structure of the voltage regulating assembly of the present invention.

[0028] In the figure: 1. First valve body; 11. Protective cover; 12. First liquid inlet; 121. Limiting groove; 13. Pressure regulating pipe; 131. First connecting pipe; 14. Sampling chamber; 141. Sampling tube; 15. Guide frame; 151. Guide groove; 152. Mounting frame; 16. First liquid outlet; 17. Sealing assembly; 2. Sampling valve; 21. Second valve body; 22. Second liquid outlet; 23. Control rod; 24. Valve stem; 241. Sealing member; 25. Second liquid inlet; 26. First elastic member; 3. Control assembly; 31. Hand wheel; 32. Connecting frame; 321. Limit rod; 322, rack; 4, first sealing mechanism; 41, first sealing plug; 411, first sealing ring; 42, gear; 5, second sealing mechanism; 51, second sealing plug; 511, second sealing ring; 52, sealing sleeve; 521, liquid inlet hole; 53, bearing; 54, adjusting screw; 6, pressure gauge; 7, pressure regulating assembly; 71, sealing plate; 711, mounting bolt; 712, reserved hole; 713, mounting nut; 72, bottom plate; 721, mounting screw; 73, second elastic member; 74, third sealing plug; 741, third sealing ring. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0030] Example 1: Figures 1 to 8 As shown, an embodiment of the present invention provides: a regulating angle valve for sewage discharge, comprising a first valve body 1, on which a control component 3 is mounted, the control component 3 being used for opening and closing control of the first valve body 1; A sampling valve 2 is installed on the first valve body 1, and the sampling valve 2 is used to sample the residual sewage in the angle valve; A pressure regulating assembly 7 is installed on the first valve body 1, and the pressure regulating assembly 7 is used to alleviate the water hammer effect; A first sealing mechanism 4 and a second sealing mechanism 5 are installed on the control assembly 3 , and the first sealing mechanism 4 and the second sealing mechanism 5 are used for opening and closing the angle valve.

[0031] Specifically, by arranging a pressure-regulating component 7 on the first valve body 1, when the valve is closed quickly to cause a water hammer effect and a sudden increase in pressure in the pipeline, the pressure-regulating component 7 can release part of the high-pressure water flow, effectively alleviating the pressure impact of the water hammer shock wave on the valve body and the pipeline, thereby achieving the effect of protecting the drainage system components and improving safety and stability.

[0032] By setting a sampling valve 2 on the first valve body 1, the opening of the sampling valve 2 is controlled during sampling, so that the sewage remaining in the angle valve is slowly discharged through the sampling valve 2, thereby avoiding sample splashing and environmental pollution caused by direct injection of high-pressure sewage; In the non-sampling state, the sampling valve 2 remains closed, maintaining the closed state of the sampling channel, thereby ensuring the safety of sampling and improving the accuracy and reliability of sample collection.

[0033] Example 2: In order to achieve safe sampling of residual sewage in the angle valve, avoid high-pressure sewage injection pollution and improve sample collection accuracy, Figure 4 and Figure 5 As shown, in this embodiment, the sampling valve 2 includes a second valve body 21, which is provided with a second liquid inlet end 25 and a second liquid outlet end 22; a valve stem 24 passes through the second valve body 21, and one end of the valve stem 24 in the second valve body 21 is provided with a sealing member 241, which is used to close the second liquid outlet end 22; the valve stem 24 is elastically connected to the second valve body 21 through a first elastic member 26, and a control rod 23 is installed on the second valve body 21 at the end where the valve stem 24 passes through, and the control rod 23 is used to press the valve stem 24.

[0034] The first valve body 1 includes a first liquid inlet end 12, a pressure regulating tube 13 and a first liquid outlet end 16. A sampling chamber 14 is provided in the first valve body 1 on the side opposite to the pressure regulating tube 13 and the first liquid outlet end 16. The sampling chamber 14 is used to temporarily store sewage that has not been completely discharged from the angle valve; the bottom of the sampling chamber 14 is opened and connected to a sampling tube 141 installed therein. The sampling tube 141 is used to be connected and installed with the sampling valve 2.

[0035] The seal 241 is a conical rubber sealing head, the angle of its cone surface matches the angle of the inner cone surface of the second liquid outlet end 22, forming a linear sealing structure; the first elastic member 26 is a compression spring, one end of the first elastic member 26 abuts the seal 241, and the other end of the first elastic member 26 abuts the inner wall step surface of the second valve body 21, so that the seal 241 maintains the seal on the second liquid outlet end 22 in a natural state.

[0036] The control rod 23 is connected to the protruding end of the valve stem 24 through a threaded nut, and the pressing portion of the control rod 23 is aligned with the protruding end of the valve stem 24, and an anti-slip pattern is provided at this position.

[0037] The sampling tube 141 is connected to the second liquid inlet end 25 of the sampling valve 2 through a quick connector, and a sealing ring is provided inside the quick connector; the inner wall of the sampling cavity 14 is coated with a polytetrafluoroethylene anti-corrosion coating, and the volume of the sampling cavity 14 is designed to be 50-100 ml according to the nominal diameter of the angle valve.

[0038] Example 3: In order to effectively alleviate the high-pressure impact caused by the water hammer effect when the valve is closed and protect the valve body and pipeline safety, Figure 4 and Figure 8 As shown, in this embodiment, the pressure regulating assembly 7 includes a sealing plate 71, on which a mounting bolt 711 is installed. The mounting bolt 711 is used for fixing the sealing plate 71 and the angle valve. A base plate 72 is inserted through a reserved hole 712 on the sealing plate 71, and a mounting screw 721 is installed at the bottom of the base plate 72. The bottom of the mounting screw 721 passes through the reserved hole 712 and is threadedly installed with a mounting nut 713; a third sealing plug 74 is installed on the base plate 72 through a second elastic member 73, and a third sealing ring 741 is installed on the third sealing plug 74.

[0039] In the first valve body 1 , the pressure regulating pipe 13 is used for installing the pressure regulating assembly 7 . The pressure regulating pipe 13 has a hole and is connected to a first connecting pipe 131 . The pressure gauge 6 is installed on the first connecting pipe 131 .

[0040] The second elastic member 73 is distributed between the base plate 72 and the third sealing plug 74, and its pre-tightening force is set to 0.5-1.0 MPa according to the working pressure of the angle valve; the third sealing plug 74 is a metal plug with a wear-resistant chrome layer plated on the outer surface, and the third sealing ring 741 is embedded in the annular groove of the third sealing plug 74 and has an interference fit with the inner wall of the pressure regulating tube 13.

[0041] The first connecting pipe 131 is vertically connected to the pressure regulating pipe 13 , and the pressure gauge 6 is installed on the end of the first connecting pipe 131 through threads, and the range of the pressure gauge 6 covers 1.5 times the working pressure of the angle valve.

[0042] Example 4: In order to achieve precise opening and closing control and high-pressure sealing of the angle valve, the pressure regulation and sampling functions are linked at the same time, such as Figure 1 、 Figure 4 、 Figure 6 and Figure 7 As shown, in this embodiment, the control component 3 includes a handwheel 31, on which a connecting frame 32 is rotatably mounted, and a limiting rod 321 and a rack 322 are mounted on the connecting frame 32; the limiting rod 321 is in dynamic contact with the guide frame 15 to guide the moving trajectory of the rack 322; the rack 322 is slidably mounted in the guide groove 151, and the guide groove 151 is opened on the guide frame 15 outside the first liquid outlet end 16.

[0043] The first sealing mechanism 4 includes a first sealing plug 41, and the front and rear ends of the first sealing plug 41 respectively pass through the first liquid outlet 16 and are fixedly installed with gears 42. The gear 42 is rotatably installed with the guide frame 15 through the mounting frame 152, and the gear 42 is meshed with the rack 322; a first sealing ring 411 is installed on the first sealing plug 41, and the first sealing ring 411 is in dynamic contact with the inner wall of the first liquid outlet 16.

[0044] The second sealing mechanism 5 includes a second sealing plug 51, on which a second sealing ring 511 is installed, and the second sealing ring 511 is in dynamic contact with the inner wall of the first liquid inlet end 12; a sealing sleeve 52 and a bearing 53 are respectively installed on both sides of the second sealing plug 51, and a liquid inlet hole 521 is opened at the bottom of the sealing sleeve 52, and the liquid inlet hole 521 is used to connect the first liquid inlet end 12 and the pressure regulating pipe 13 after the angle valve is closed; an adjusting screw 54 is installed in the bearing 53, and the adjusting screw 54 is threadedly connected to the sealing assembly 17, and one end of the adjusting screw 54 passing through the sealing assembly 17 is fixedly connected to the handwheel 31, and the sealing assembly 17 is used to seal the connection between the angle valve and the control assembly 3.

[0045] In the first valve body 1, limit grooves 121 are respectively provided on the front and rear sides of the inner wall of the first liquid inlet end 12, and the limit grooves 121 are used to guide the movement trajectory of the second sealing mechanism 5; a guide groove 151 is provided on the guide frame 15 installed on the outside of the first liquid outlet end 16, for guiding the movement trajectory of the control component 3; a protective cover 11 is installed on the guide frame 15, and the protective cover 11 is used to cover the exposed mechanical transmission structure in the control component 3, and a mounting frame 152 is installed on the guide frame 15 inside the protective cover 11.

[0046] The hand wheel 31 and the connecting frame 32 are rotatably connected via a rotating ring. The inner ring of the rotating ring is rotatably mounted on the hand wheel 31 , and the rotating ring is fixedly connected to the connecting frame 32 .

[0047] The limiting rod 321 is a semicircular pin, the upper end surface of the limiting rod 321 is flat and slides with the bottom of the guide frame 15, the guide groove 151 is a T-slot, and the tail of the rack 322 is provided with a slider matching the T-slot.

[0048] The number of teeth z and module m of gear 42 meet the design requirements of the maximum stroke L of rack 322: When the gear 42 rotates 90 °, the rack 322 moves a distance equal to its maximum stroke, forming a synchronous transmission relationship between the 90 ° rotation of the gear 42 and the full stroke of the rack 322, and the shaft end of the gear 42 is rotatably mounted on the mounting bracket 152.

[0049] The outer wall of the sealing sleeve 52 is provided with a ridge matching the limiting groove 121 to limit the radial rotation of the sealing sleeve 52 in the first liquid inlet end 12 . At the same time, the outer diameter of the sealing sleeve 52 is smaller than the outer diameter of the second sealing ring 511 .

[0050] A double-lip skeleton oil seal is provided between the adjusting screw 54 and the sealing assembly 17. The sealing assembly 17 includes a sealing cover and an O-ring, which is fixed to the valve body end face of the angle valve by bolts; the protective cover 11 is a detachable sheet metal structure, which is connected to the guide frame 15 by a snap buckle, and an anti-interference boss is provided on the inside.

[0051] When using the present invention, rotating the handwheel 31 counterclockwise rotates the handwheel 31 and the connecting frame 32, thereby driving the adjustment screw 54 to rotate. The adjustment screw 54 threadedly engages with the sealing assembly 17, pushing the second sealing plug 51 along the retaining groove 121 on the inner wall of the first liquid inlet end 12, away from the liquid inlet end, thereby opening the first liquid inlet end 12. Simultaneously, the rack 322 on the connecting frame 32 linearly moves along the guide groove 151 of the guide frame 15, engaging and driving the gear 42 of the first sealing mechanism 4 to rotate. Gear 42 drives the first sealing plug 41 to rotate, opening the first liquid outlet end 16, allowing sewage to flow into the first liquid inlet end 12 and be discharged through the first liquid outlet end 16.

[0052] Rotate the handwheel 31 clockwise, and the adjusting screw 54 drives the second sealing plug 51 to move toward the first liquid inlet end 12 until the second sealing plug 51 completely seals the first liquid inlet end 12 through the second sealing ring 511; at the same time, the rack 322 drives the gear 42 to reset, and the first sealing plug 41 seals the first liquid outlet end 16, cutting off the sewage passage.

[0053] If water hammer pressure is generated at the moment of closing, the third sealing plug 74 of the pressure regulating assembly 7 overcomes the pre-tightening force of the second elastic member 73 under high pressure, thereby releasing the shock wave and protecting the valve and pipeline.

[0054] When performing the sampling operation, it is necessary to ensure that the angle valve is closed. At this time, the control rod 23 of the sampling valve 2 is pressed to overcome the elastic force of the first elastic member 26, push the valve stem 24 to move, and make the sealing member 241 separate from the second liquid outlet end 22, thereby opening the sampling channel; the residual sewage temporarily stored in the sampling chamber 14 in the angle valve is slowly discharged from the second liquid outlet end 22 through the sampling tube 141 and the second liquid inlet end 25; after the sampling is completed, the control rod 23 is released, the first elastic member 26 is reset, and the sealing member 241 re-seals the second liquid outlet end 22, thereby restoring the normally closed state of the sampling valve 2.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0056] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A regulating angle valve for sewage discharge, comprising a first valve body (1), a control assembly (3) mounted on the first valve body (1), the control assembly (3) being used for opening and closing control of the first valve body (1), characterized in that: A sampling valve (2) is installed on the first valve body (1), and the sampling valve (2) is used for sampling residual sewage in the angle valve; A pressure regulating assembly (7) is installed on the first valve body (1), and the pressure regulating assembly (7) is used to alleviate the water hammer effect; A first sealing mechanism (4) and a second sealing mechanism (5) are installed on the control assembly (3), and the first sealing mechanism (4) and the second sealing mechanism (5) are used for opening and closing the angle valve.

2. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The sampling valve (2) comprises a second valve body (21), and the second valve body (21) is provided with a second liquid inlet end (25) and a second liquid outlet end (22); A valve stem (24) passes through the second valve body (21), and a sealing member (241) is provided at one end of the valve stem (24) in the second valve body (21). The sealing member (241) is used to seal the second liquid outlet (22); The valve stem (24) is elastically connected to the second valve body (21) via a first elastic member (26). A control rod (23) is mounted on the second valve body (21) at the end where the valve stem (24) passes through. The control rod (23) is used to press the valve stem (24).

3. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The pressure regulating assembly (7) includes a sealing plate (71), a mounting bolt (711) is installed on the sealing plate (71), and the mounting bolt (711) is used for fixing the sealing plate (71) and the angle valve. A bottom plate (72) is inserted into the sealing plate (71) through a reserved hole (712), and a mounting screw (721) is installed at the bottom of the bottom plate (72), and the bottom of the mounting screw (721) passes through the reserved hole (712) and is threadedly mounted with a mounting nut (713); A third sealing plug (74) is installed on the bottom plate (72) via a second elastic member (73), and a third sealing ring (741) is installed on the third sealing plug (74).

4. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The first valve body (1) comprises a first liquid inlet end (12), a pressure regulating tube (13) and a first liquid outlet end (16); a sampling cavity (14) is provided in the first valve body (1) on a side opposite to the pressure regulating tube (13) and the first liquid outlet end (16); the sampling cavity (14) is used to temporarily store sewage that has not been completely discharged from the angle valve; The bottom of the sampling cavity (14) is opened and connected to a sampling tube (141), and the sampling tube (141) is connected to the sampling valve (2). The first liquid inlet end (12) is used for installing the second sealing mechanism (5), and limiting grooves (121) are respectively provided on the front and rear sides of the inner wall of the first liquid inlet end (12), and the limiting grooves (121) are used to guide the movement of the second sealing mechanism (5); The pressure regulating pipe (13) is used for installing the pressure regulating assembly (7); a hole is opened on the pressure regulating pipe (13) and a first connecting pipe (131) is installed in communication therewith; a pressure gauge (6) is installed on the first connecting pipe (131); The first liquid outlet end (16) is used for installing the first sealing mechanism (4). A guide frame (15) is installed outside the first liquid outlet end (16). A guide groove (151) is provided on the guide frame (15). The guide groove (151) is used to guide the movement trajectory of the control component (3). A protective cover (11) is mounted on the guide frame (15), and a mounting frame (152) is mounted on the guide frame (15) inside the protective cover (11).

5. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The first valve body (1) further comprises a sealing assembly (17), and the sealing assembly (17) is used to seal the connection between the angle valve and the control assembly (3).

6. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The control assembly (3) includes a hand wheel (31), a connecting frame (32) is rotatably mounted on the hand wheel (31), and a limit rod (321) and a rack (322) are mounted on the connecting frame (32); The limiting rod (321) is in dynamic contact with the guide frame (15) and is used to guide the movement trajectory of the rack (322); The rack (322) is slidably mounted in the guide groove (151).

7. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The first sealing mechanism (4) includes a first sealing plug (41), wherein the first liquid outlet (16) is passed through the front and rear ends of the first sealing plug (41) and a gear (42) is fixedly installed therein. The gear (42) is rotatably installed with the guide frame (15) via the mounting frame (152), and the gear (42) is meshedly connected with the rack (322). A first sealing ring (411) is mounted on the first sealing plug (41), and the first sealing ring (411) is in dynamic contact with the inner wall of the first liquid outlet end (16).

8. The regulating angle valve for sewage discharge according to claim 1, characterized in that: The second sealing mechanism (5) comprises a second sealing plug (51), a second sealing ring (511) is mounted on the second sealing plug (51), and the second sealing ring (511) is in dynamic contact with the inner wall of the first liquid inlet end (12); A sealing sleeve (52) and a bearing (53) are respectively installed on both sides of the second sealing plug (51). A liquid inlet hole (521) is provided at the bottom of the sealing sleeve (52). The liquid inlet hole (521) is used to connect the first liquid inlet end (12) and the pressure regulating pipe (13) after the angle valve is closed.

9. The regulating angle valve for sewage discharge according to claim 8, characterized in that: An adjusting screw (54) is installed in the bearing (53), the adjusting screw (54) is threadedly connected to the sealing assembly (17), and one end of the adjusting screw (54) passing through the sealing assembly (17) is fixedly connected to the handwheel (31).

Images