A double control valve

Abstract

The present application relates to the field of valve, especially to a double control valve, including a valve cylinder with a cavity, the top of the valve cylinder is sealed with a top cover, the inner cavity of the valve cylinder is provided with a drainage cavity, the drainage cavity is communicated with a liquid outlet pipe, the bottom of the valve cylinder is communicated with a liquid inlet pipe, the inner wall of the valve cylinder is provided with a spiral valve groove, the gap of the spiral valve groove increases gradually from bottom to top, the top surface of the spiral valve groove is uniformly provided with a plurality of valve holes communicated with the drainage cavity, the spiral valve groove is provided with a spiral valve plate, the spiral valve plate is attached to the top surface of the spiral valve groove, the top cover is provided with a lifting device, the lifting device is used to press the top end of the spiral valve plate, the spiral valve groove with gradually increasing gap from bottom to top is matched with the elastic spiral valve plate, the valve holes on the top wall of the spiral valve groove are opened by pressing the spiral valve plate from the top to shrink, the number of the opened valve holes and the opening range of the valve holes gradually increase due to the pressure of the spiral valve plate, which is used to accurately control the liquid flow.

Description

Technical Field

[0001] The present invention relates to the field of valves, and in particular to a dual-control valve. Background Art

[0002] Valves are widely used in life and industry. Valves used in fluid control systems come in a wide variety of varieties and specifications, from the simplest stop valves to various valves used in extremely complex automatic control systems. Valves used in industrial production require high-precision control of fluid discharge.

[0003] Most traditional industrial fluid control valves have an integral conduction cross-section. By controlling the rotation or offset of the valve core, the blocking area of ​​the valve conduction cross-section is changed to achieve flow rate control. The integral conduction cross-section blocking control accuracy is low, which has disadvantages in the process of industrial fluid conduction control and is not easy to accurately control the flow rate. Summary of the Invention

[0004] The purpose of the present invention is to solve the following problems existing in the prior art: most traditional industrial liquid flow control valves have an integral conduction cross-section, and the flow rate of the liquid flow is controlled by changing the blocking area of ​​the valve conduction cross-section by controlling the rotation or displacement of the valve core. The integral conduction cross-section blocking control accuracy is low, which has disadvantages in the process of industrial liquid flow conduction control and is not easy to accurately control the flow rate.

[0005] In order to solve the problems existing in the prior art, the present invention provides a double-control valve, including a valve cylinder with a cavity, a top cover encapsulated on the top of the valve cylinder, the inner cavity of the valve cylinder has a drainage cavity, the drainage cavity is connected to a liquid outlet pipe, the bottom of the valve cylinder is connected to a liquid inlet pipe, the inner wall of the valve cylinder is provided with a spiral valve groove, the gap of the spiral valve groove increases from bottom to top, and a number of valve holes connected to the drainage cavity are evenly provided on the top surface of the spiral valve groove, a spiral valve plate is provided in the spiral valve groove, the spiral valve plate is fitted with the top surface of the spiral valve groove, and a lifting device is provided in the top cover, and the lifting device is used to press down the top of the spiral valve plate.

[0006] Preferably, the spiral valve plate is made by bending a spring sheet, and the thickness of the spiral valve plate is adapted to the gap at the bottom of the spiral valve slot.

[0007] Preferably, the lifting device includes a torsion body passing through the top cover, a telescopic part is provided inside the valve cylinder, the top of the telescopic part is vertically slidably plugged into the torsion body, a screw is rotated through the top of the torsion body, and the screw is threadedly connected to the telescopic part.

[0008] Preferably, the telescopic part includes a square handle, a lifting groove is provided on the bottom surface of the torsion body, the top of the square handle is adapted to slide in the lifting groove, a square groove is provided at the bottom of the square handle, an extension rod is slidably inserted in the square groove, the extension rod is elastically connected to the square handle through a spring, a fork frame is fixed to the bottom end of the square handle and the bottom end of the extension rod, and ear rods are fixed to the top and middle of the spiral valve plate, and the fork frame is vertically stuck on the outside of the ear rod.

[0009] Preferably, the inner wall of the valve cylinder is provided with an extension groove which is spirally adapted to the spiral valve plate, the extension groove is connected to the top end of the spiral valve groove, a spiral opening is vertically passed through the center position of the top cover, the torsion body is threadedly connected to the spiral opening, and a through opening which passes through the discharge cavity is provided at the bottom of the spiral valve groove.

[0010] Preferably, the side wall of the torsion body is provided with a swing groove that passes through the lifting groove, and the inner wall of the spiral mouth is provided with a limiting groove corresponding to the swing groove. An angle handle is elastically rotated in the swing groove by a torsion spring, one end of the angle handle is placed above the square handle, and the other end of the angle handle is placed in the limiting groove.

[0011] Preferably, torsion plates are elastically rotated on both sides of the top of the torsion body through torsion springs, and a downwardly inclined slot is provided on the surface of the top cover, and the torsion plates are tilted downwardly and inserted into the slot.

[0012] Preferably, a guide groove is vertically opened on the side of the torsion body, an adjustment frame slides vertically in the guide groove, the adjustment frame is threadedly connected to the screw, a scale mark is set on the side of the guide groove, and a pointer of the alignment scale mark is fixed at the bottom end of the adjustment frame.

[0013] Preferably, the top cover is fixed to the valve cylinder by screws, and the top end of the extension groove passes through the top of the valve cylinder.

[0014] Compared with related technologies, the dual-control valve provided by the present invention has the following beneficial effects:

[0015] 1. The present invention uses a spiral valve groove with a gap that gradually increases from bottom to top and is adapted to a flexible spiral valve plate. By pressing the spiral valve plate from the top and contracting it, the valve holes on the top wall of the spiral valve groove are opened to conduct liquid flow. As the spiral valve plate is pressurized, the number of valve holes opened and the amplitude of the valve holes gradually increase, thereby accurately controlling the liquid flow rate.

[0016] 2. The present invention adopts a spiral spiral valve plate adapted to the spiral valve groove to block the valve hole, and an extension groove is extended on the top of the spiral valve groove to spirally conduct the spiral valve groove upward to open the bottom opening, so that the valve has two switching control modes, increasing the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Fig. 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Fig. 2 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0019] Fig. 3 Schematic diagram of the valve hole distribution structure of the present invention;

[0020] Fig. 4 This is a schematic diagram of the connection structure between the telescopic member and the spiral valve plate of the present invention;

[0021] Fig. 5 This is a schematic diagram of the corner handle installation structure of the present invention;

[0022] Fig. 6 This is a schematic diagram of the pointer installation structure of the present invention.

[0023] Numbers in the figure: 1. Valve cylinder; 2. Top cover; 3. Liquid inlet pipe; 4. Liquid outlet pipe; 5. Torsion body; 6. Telescopic member; 61. Square handle; 62. Square groove; 63. Extension rod; 7. Spiral valve plate; 8. Ear rod; 9. Fork frame; 10. Spiral valve groove; 11. Discharge chamber; 12. Extension groove; 13. Valve hole; 14. Through port; 15. Screw; 16. Swing groove; 17. Angle handle; 18. Limit groove; 19. Card slot; 20. Torsion plate; 21. Adjustment frame; 22. Guide groove; 23. Pointer. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0026] Example 1

[0027] like Figs. 1-6 As shown, a double-control valve comprises a cylindrical valve cylinder 1 as a main body, with a cylindrical cavity inside the valve cylinder 1. The top of the valve cylinder 1 passes through the interior of the valve cylinder 1. A top cover 2 is used to encapsulate the top of the valve cylinder 1. An annular discharge cavity 11 is provided in the wall of the valve cylinder 1. A liquid outlet pipe 4 passes through the discharge cavity 11 from the side wall of the valve cylinder 1. A liquid inlet pipe 3 is fixed to the bottom surface of the valve cylinder 1 and passes through the cavity.

[0028] A spiral valve groove 10 is formed on the inner wall of the valve cylinder 1 from bottom to top. The cross section of the spiral valve groove 10 is rectangular. The gap size of the spiral valve groove 10 increases from bottom to top. The gap size at the top of the spiral valve groove 10 is more than twice the gap size at the bottom. A plurality of valve holes 13 are formed at equal intervals on the upper surface of the spiral valve groove 10. The valve holes 13 pass through the discharge cavity 11.

[0029] The spiral valve plate 7 made of a spring sheet is placed in the spiral valve groove 10. The spiral valve plate 7 is in a compressed state. The spiral valve plate 7 is tightly attached to the upper surface of the spiral valve groove 10 to block the valve hole 13. The thickness of the spiral valve plate 7 is adapted to the gap at the bottom of the spiral valve groove 10. The cross-section of the spiral valve plate 7 is square, and the inner edge of the spiral valve plate 7 protrudes from the inner side of the spiral valve groove 10.

[0030] A spiral opening is vertically passed through the center of the top cover 2, and the torsion body 5 is spirally fixed in the spiral opening. A square lifting groove is provided on the bottom surface of the torsion body. The telescopic member 6 includes a square handle 61. The top of the square handle 61 is vertically inserted into the lifting groove. The screw 15 is rotatably connected to the torsion body 5 through a bearing. The bottom end of the screw 15 penetrates into the lifting groove and is threadedly connected to the top of the square handle 61. A square groove 62 is provided at the bottom of the square handle 61. An extension rod 63 is slidably inserted into the square groove 62. The extension rod 63 is elastically connected to the square handle 61 through a spring. A fork frame 9 is fixed to the bottom end of the square handle 61 and the bottom end of the extension rod 63. Ear rods 8 are fixed to the inner side of the top and the inner side of the middle of the spiral valve plate 7. The fork frame 9 is an inverted U-shape, and the fork frame 9 is vertically stuck on the outer side of the ear rod 8;

[0031] The liquid inlet pipe 3 is connected to the water inlet end, and the liquid outlet pipe 4 is connected to the water outlet end. The spiral valve plate 7 is stably fitted with the upper surface of the spiral valve groove 10 by the elastic force, and the high-pressure liquid introduced by the liquid inlet pipe 3 causes the spiral valve plate 7 to stably seal the valve hole 13. When opening the valve, the screw 15 is rotated, and the square handle 61 moves downward under the push of the thread. The ear rod 8 is pressed down by the fork frame 9, so that the top of the spiral valve plate 7 is pressed downward and retracted. The top of the spiral valve plate 7 gradually moves downward and breaks away from the fit with the upper surface of the spiral valve groove 10, and the valve hole 13 is opened. The liquid introduced by the liquid inlet pipe 3 is introduced into the discharge chamber 11 through the valve hole 13 and then discharged from the liquid outlet pipe 4;

[0032] The downward pressure of the fork frame 9 on the ear rod 8 gradually increases, so that the contraction amount of the spiral valve plate 7 and the contraction distance from the top to the bottom gradually increase, so that the number of opened valve holes 13 and the opening range of the valve holes 13 gradually increase, and the liquid conduction area gradually increases, which is used to control the liquid flow;

[0033] The elastic force of the spring acts on the extension rod 63, causing the extension rod 63 to gradually move downward. The fork frame 9 at the end of the extension rod 63 applies pressure to the ear rod 8 in the middle of the spiral valve plate 7, promoting uniform compression and deformation of the spiral valve plate 7, thereby improving the sensitivity of the diversion adjustment.

[0034] A guide groove 22 is vertically opened on the side of the torsion body 5, and an adjustment frame 21 slides vertically in the guide groove 22. The adjustment frame 21 is threadedly connected to the screw 15. A scale mark is set on the side of the guide groove 22, and a pointer 23 for the alignment scale mark is fixed at the bottom end of the adjustment frame 21;

[0035] The screw 15 is rotated to adjust the height of the square handle 61 while controlling the adjustment frame 21 to rise and fall synchronously along the guide groove 22. The pointer 23 at the bottom of the adjustment frame 21 is aligned with the scale mark to intuitively display the opening and closing degree of the valve.

[0036] Example 2

[0037] like Figs. 1-6 As shown, an extension groove 12 is formed on the top of the inner wall of the valve cylinder 1. The extension groove 12 is spirally adapted to the spiral valve plate 7, and the bottom end of the extension groove 12 passes through the top of the spiral valve groove 10. The gap thickness of the extension groove 12 is the same as the thickness of the spiral valve plate 7, and the upper surface of the extension groove 12 is aligned with the upper surface of the spiral valve groove 10 to form a spiral coherent channel. A through port 14 is formed at the bottom end of the spiral valve groove 10 to pass through the discharge chamber 11.

[0038] The torsion plates 20 are elastically rotated on both sides of the top of the torsion body 5 by torsion springs. A downwardly inclined slot 19 is provided on the surface of the top cover 2, and the torsion plates 20 are tilted downwardly and inserted into the slot 19.

[0039] When the valve is opened and closed in the manner of the first embodiment, the torsion plate 20 is engaged with the slot 19 to prevent the torsion body 5 from rotating when the screw 15 is rotated. When the valve is opened and closed in the manner of the present embodiment, the screw 15 needs to be rotated so that the telescopic member 6 is at the top, so that the spiral valve plate 7 is in close contact with the upper wall of the spiral valve slot 10.

[0040] Overcome the elastic force and pull the torsion plate 20 out of the slot 19. Hold the torsion plate 20 and rotate the torsion body 5, so that the torsion body drives the telescopic member 6 to rotate and move upward. The fork frame 9 twists the ear rod 8 laterally, so that the spiral valve plate 7 spirals up along the spiral valve groove 10 and penetrates the extension groove 12. The bottom end of the spiral valve plate 7 clears the bottom of the spiral valve groove 10, and the through port 14 is opened. The liquid introduced by the liquid inlet pipe 3 is introduced into the discharge chamber 11 through the through port 14 and then discharged from the liquid outlet pipe 4.

[0041] The top cover 2 is fixed to the valve cylinder 1 by screws. The top of the extension groove 12 passes through the top of the valve cylinder 1. The screws are removed to open the top cover 2. The spiral valve plate 7 can be rotatably taken out from the top of the extension groove 12, which is convenient for maintenance of the spiral valve groove 10 and the spiral valve plate 7.

[0042] Example 3

[0043] like Figs. 5-6 As shown, the side wall of the torsion body 5 is provided with a swing groove 16 that passes through the lifting groove, and the inner wall of the spiral mouth is provided with a limiting groove 18 that is aligned with the swing groove 16. An angle handle 17 is elastically rotated in the swing groove 16 by a torsion spring. One end of the angle handle 17 is placed above the square handle 61, and the other end of the angle handle 17 is placed in the limiting groove 18.

[0044] When the valve is opened or closed in the manner of the first embodiment, the square handle 61 moves downward and does not contact the angle handle 17. The outer end of the angle handle 17 is engaged in the limiting groove 18 under the action of elastic force, so that the torsion body 5 and the top cover 2 remain integral in the rotation direction, and the effective surface torsion body 5 is twisted.

[0045] When the valve is opened and closed using the method of embodiment 2, it is necessary to rotate the screw 15 so that the top end of the square handle 61 moves to the top of the lifting groove to squeeze the angle handle 17. The angle handle 17 is pressed so that its outer end swings down and hides in the swing groove 16, releasing the engagement between the angle handle 17 and the limit groove 18. At this time, the torsion body 5 can be rotated independently to control the opening and closing of the valve.

Claims

1. A double-control valve, comprising a valve cylinder (1) having a cavity, wherein a top cover (2) is encapsulated on the top of the valve cylinder (1), characterized in that: The inner cavity of the valve cylinder (1) has a drainage cavity (11), the drainage cavity (11) is connected to a liquid outlet pipe (4), the bottom of the valve cylinder (1) is connected to a liquid inlet pipe (3), the inner wall of the valve cylinder (1) is provided with a spiral valve groove (10), the gap of the spiral valve groove (10) increases from bottom to top, the top surface of the spiral valve groove (10) is evenly provided with a plurality of valve holes (13) connected to the drainage cavity (11), the spiral valve groove (10) is provided with an elastic spiral valve plate (7), the spiral valve plate (7) is fitted with the top surface of the spiral valve groove (10), and the top cover (2) is provided with a lifting device, the lifting device is used to press down the top of the spiral valve plate (7); The lifting device comprises a torsion body (5) penetrating the top cover (2), a telescopic member (6) is provided inside the valve cylinder (1), the top of the telescopic member (6) is vertically slidably plugged into the torsion body (5), a screw (15) is rotatably passed through the top of the torsion body (5), and the screw (15) is threadedly connected to the telescopic member (6); The telescopic member (6) includes a square handle (61), a lifting groove is provided on the bottom surface of the twisting body (5), the top of the square handle (61) is adapted to slide in the lifting groove, a square groove (62) is provided on the bottom of the square handle (61), an extension rod (63) is slidably inserted in the square groove (62), the extension rod (63) is elastically connected to the square handle (61) through a spring, a fork frame (9) is fixed to the bottom end of the square handle (61) and the bottom end of the extension rod (63), an ear rod (8) is fixed to the top and middle of the spiral valve plate (7), and the fork frame (9) is vertically clamped on the outside of the ear rod (8); The inner wall of the valve cylinder (1) is provided with an extension groove (12) that is spirally adapted to the spiral valve plate (7), and the extension groove (12) is connected to the top end of the spiral valve groove (10). A spiral opening is vertically passed through the center position of the top cover (2), and the torsion body (5) is threadedly connected to the spiral opening. The bottom of the spiral valve groove (10) is provided with a through opening (14) that passes through the discharge chamber (11).

2. The dual-control valve according to claim 1, characterized in that: The spiral valve plate (7) is made by bending a spring sheet, and the thickness of the spiral valve plate (7) is adapted to the gap at the bottom of the spiral valve slot (10).

3. The dual-control valve according to claim 1, characterized in that: The side wall of the torsion body (5) is provided with a swing groove (16) penetrating the lifting groove, and the inner wall of the spiral mouth is provided with a limiting groove (18) aligned with the swing groove (16). An angle handle (17) is elastically rotated in the swing groove (16) by a torsion spring, one end of the angle handle (17) is placed above the square handle (61), and the other end of the angle handle (17) is placed in the limiting groove (18).

4. The dual-control valve according to claim 2, characterized in that: Torsion plates (20) are elastically rotated on both sides of the top of the torsion body (5) by a torsion spring, and a downwardly inclined slot (19) is provided on the surface of the top cover (2), and the torsion plates (20) are tilted downwardly and inserted into the slot (19).

5. The dual-control valve according to claim 4, characterized in that: A guide groove (22) is vertically provided on the side of the torsion body (5), an adjustment frame (21) is vertically slidable in the guide groove (22), the adjustment frame (21) is threadedly connected to the screw rod (15), a scale mark is provided on the side of the guide groove (22), and a pointer (23) for aligning the scale mark is fixed at the bottom end of the adjustment frame (21).

6. The dual-control valve according to claim 5, characterized in that: The top cover (2) and the valve cylinder (1) are fixed by screws, and the top end of the extension groove (12) passes through the top of the valve cylinder (1).

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