Electric ball valve based on pressure balance

Abstract

The utility model discloses an electric ball valve based on pressure balance, which relates to the technical field of electric ball valves and comprises a ball valve body, a control box is fixedly mounted at the top of the ball valve body, a manual opening and closing component is movably connected to the bottom of the right side of the control box, and the left portion of the manual opening and closing component is movably connected with the top of the outer wall of a valve rod. A cleaning and collecting assembly is fixedly installed on the left portion of the ball valve body. According to the electric ball valve based on pressure balance, media close to the interior of the electric ball valve can be filtered and intercepted through the cleaning and collecting assembly, the fan blades and the rotating shaft are driven to rotate through impact force generated when fluid passes through the cleaning and collecting assembly, and then the inner wall of the liquid inlet pipe and the filter screen are cleaned. The ball valve can be manually opened and closed through the manual opening and closing assembly when power cannot be supplied to the ball valve body, the second bevel gear cannot drive the first bevel gear to rotate through the meshing relation when the adjusting screw is not rotated, and therefore adjustment of the valve rod is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of electric ball valves, in particular to an electric ball valve based on pressure balance. Background Art

[0002] The electric ball valve is a reversing valve composed of a valve core controlled by an electromagnet or motor and sealed by a wire. It relies on a spherical or conical seal to close the oil circuit. It is a seat valve structure with good sealing and no internal leakage. It also has fast response speed and sensitive action. Because the valve core is a steel ball or a conical plunger, there is no axial sealing length, and there will be no jamming phenomenon like a sliding valve when changing direction. It can adapt to high pressure requirements and has high operating pressure. The electric ball valve has strong anti-pollution ability and can adapt to various working media.

[0003] Chinese patent document CN218000581U discloses an electric ball valve, which has a fixing frame arranged on both sides of the middle part of the electric ball valve, and a spring seat is connected to the inner wall of the fixing frame, and an extrusion ring is connected to the inner wall end of the spring seat, and the bottom end of the fixing frame is connected to a support frame; the bottom end of the support assembly is connected to a base; the bottom end of the base is provided with a protective assembly, and the inner diameter of the connecting cover can be reduced by installing the assembly through the installation assembly installed inside the connecting cover, which can be used to connect small pipes, and the user can adjust the caliber size of the connecting cover according to their own needs.

[0004] The existing technology has the following problems: when the electric ball valve allows the medium to pass through, the inner wall of the liquid inlet pipe is prone to accumulate dirt, and the medium usually contains a certain amount of impurities. The impurities and particles are easy to hinder the normal operation of the valve core, which poses certain safety hazards. At the same time, the control part of the electric ball valve is designed based on the existing technology. When the electric ball valve is not powered, the operator generally manually turns the hand wheel to open and close the ball valve, but the hand wheel has no restrictions and is easy to turn due to external factors. Utility Model Content

[0005] The utility model provides an electric ball valve based on pressure balance to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An electric ball valve based on pressure balance comprises a ball valve body, a control box is fixedly installed on the top of the ball valve body, an actuator is fixedly installed on the top of the inner cavity of the control box, a pressure mechanism is fixedly installed on the upper end of the control box, the top of the ball valve body is rotatably connected to a valve stem that passes through the bottom of the control box, a manual opening and closing component is movably connected to the right bottom of the control box, the left part of the manual opening and closing component is movably connected to the top of the outer wall of the valve stem, and a cleaning and collecting component is fixedly installed on the left part of the ball valve body.

[0008] Preferably, the cleaning and collecting assembly includes a liquid inlet pipe, the right side of the liquid inlet pipe is fixedly installed on the left part of the ball valve body, a fixed plate is fixedly installed on the left position of the top of the inner wall of the liquid inlet pipe, the left side of the fixed plate is rotatably connected with a rotating shaft that passes through the left part of the fixed plate, a plurality of fan blades arranged in a ring form are fixedly installed on the left part of the outer wall of the rotating shaft, three scrapers arranged in a ring form are fixedly installed in the middle part of the outer wall of the rotating shaft, and one end of the three scrapers away from the axis of the rotating shaft overlaps the inner wall of the liquid inlet pipe.

[0009] Preferably, a filter screen is fixedly mounted on the right portion of the inner wall of the liquid inlet pipe, and three cleaning plates arranged in a ring form are fixedly mounted on the right portion of the outer wall of the rotating shaft, and the right sides of the three cleaning plates overlap the left side of the filter screen.

[0010] Preferably, a slag discharge barrel is fixedly installed in the middle position of the bottom of the outer wall of the liquid inlet pipe, a slag discharge groove is opened at the lower end of the slag discharge barrel, a cover is overlapped in the middle of the lower end of the slag discharge barrel, the four sides of the cover are threadedly connected with fixing bolts passing through the bottom of the cover, and the lower end of the cover is opened with four threaded holes matching the four fixing bolts.

[0011] Preferably, the manual opening and closing assembly includes a bevel gear 1, the inner wall of the bevel gear 1 is fixedly sleeved with the top of the outer wall of the valve stem, the bevel gear 1 is located in the control box, and the middle position of the bottom right side of the control box is threadedly connected with an adjusting screw that passes through the right part of the control box, the left end of the adjusting screw is rotatably connected with a moving plate, and the front and rear positions of the bottom right side of the control box are both slidably connected with sliding rods that pass through the right part of the control box, the left ends of the two sliding rods are fixedly connected with the front and rear positions of the bottom right side of the moving plate, and the right ends of the two sliding rods are fixedly installed with positioning blocks.

[0012] Preferably, the right bottom of the control box is slidably connected to a rectangular connecting plate that passes through the right part of the control box, the connecting plate is located above the adjusting screw, the left part of the outer wall of the connecting plate is fixedly connected to the top inner wall of the movable plate, the inner wall of the connecting plate is rotatably connected to a rotating rod that passes through the left part of the connecting plate, and a handwheel is fixedly installed on the right end of the rotating rod.

[0013] Preferably, a second bevel gear is fixedly sleeved on the left portion of the outer wall of the rotating rod, and the outer surface of the second bevel gear is meshed with the outer surface of the first bevel gear.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] 1. The utility model provides an electric ball valve based on pressure balance, which can filter and intercept the medium close to the inside of the electric ball valve through a cleaning and collecting component. It uses the impact force of the fluid passing through to drive the fan blades and the rotating shaft to rotate, thereby realizing the cleaning of the inner wall of the liquid inlet pipe and the filter screen. It does not require an external driving mechanism, saves energy and reduces consumption, and can protect equipment and pipelines.

[0016] 2. The utility model provides an electric ball valve based on pressure balance, which can manually open and close the ball valve when the ball valve body cannot be powered by power through a manual opening and closing component, and the bevel gear 2 cannot drive the bevel gear 1 to rotate through the meshing relationship without rotating the adjusting screw, so that the adjustment of the valve stem is more stable and will not rotate arbitrarily due to external factors. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model when viewed from above;

[0019] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cleaning and collecting component of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the manual opening and closing component of the utility model.

[0022] In the figure: 1. ball valve body; 2. cleaning and collecting assembly; 3. manual opening and closing assembly; 11. control box; 12. valve stem; 13. pressure mechanism; 21. liquid inlet pipe; 22. fixing plate; 23. rotating shaft; 24. fan blade; 25. scraper; 26. filter screen; 27. cleaning plate; 28. slag discharge barrel; 29. ​​slag discharge trough; 210. sealing cover; 211. fixing bolt; 212. threaded hole; 31. bevel gear one; 32. adjusting screw; 33. moving plate; 34. sliding rod; 35. positioning block; 36. connecting plate; 37. rotating rod; 38. bevel gear two. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1 and Figure 2As shown, an electric ball valve based on pressure balance includes a ball valve body 1, a control box 11 is fixedly installed on the top of the ball valve body 1, an actuator is fixedly installed on the top of the inner cavity of the control box 11, a pressure mechanism 13 is fixedly installed on the upper end of the control box 11, the top of the ball valve body 1 is rotatably connected to a valve stem 12 that passes through the bottom of the control box 11, a manual opening and closing component 3 is movably connected to the bottom right side of the control box 11, the left part of the manual opening and closing component 3 is movably connected to the top of the outer wall of the valve stem 12, and a cleaning and collecting component 2 is fixedly installed on the left part of the ball valve body 1.

[0025] The actuator and the pressure mechanism 13 are both existing mechanisms. The actuator realizes the electric and automatic rotation of the valve stem 12 to open and close the ball valve. The pressure mechanism 13 can monitor and control the fluid pressure in the pipeline or equipment to prevent pressure overload. The medium near the inside of the electric ball valve can be filtered and intercepted by the cleaning collection component 2. It uses the impact force of the fluid passing through to drive the fan blades 24 and the rotating shaft 23 to rotate, thereby realizing the cleaning of the inner wall of the liquid inlet pipe 21 and the cleaning of the filter screen 26. No external driving mechanism is required, which saves energy and reduces consumption, and can protect equipment and pipelines. The ball valve can be manually opened and closed by the manual opening and closing component 3 when the ball valve body 1 cannot be powered, and the bevel gear 2 38 cannot drive the bevel gear 1 31 to rotate through the meshing relationship when the adjusting screw 32 is not rotated, so that the adjustment of the valve stem 12 is more stable and will not rotate arbitrarily due to external factors.

[0026] like Figure 2 , Figure 3 and Figure 4 As shown, the cleaning and collecting assembly 2 includes a liquid inlet pipe 21, the right side of the liquid inlet pipe 21 is fixedly installed on the left part of the ball valve body 1, a fixed plate 22 is fixedly installed on the left position of the top of the inner wall of the liquid inlet pipe 21, the left side of the fixed plate 22 is rotatably connected with a rotating shaft 23 that passes through the left part of the fixed plate 22, a plurality of fan blades 24 arranged in a ring form are fixedly installed on the left part of the outer wall of the rotating shaft 23, three scrapers 25 arranged in a ring form are fixedly installed in the middle part of the outer wall of the rotating shaft 23, and one end of the three scrapers 25 away from the axis of the rotating shaft 23 overlaps the inner wall of the liquid inlet pipe 21.

[0027] The medium enters the ball valve body 1 from the liquid inlet pipe 21, and the impact force generated by the flow of the medium drives the fan blades 24 to rotate, thereby rotating the shaft 23 and the three scrapers 25. The three scrapers 25 can scrape and clean the inner wall of the liquid inlet pipe 21 to prevent the existence of stubborn dirt.

[0028] like Figure 4 As shown, a filter screen 26 is fixedly mounted on the right inner wall of the liquid inlet pipe 21 , and three cleaning plates 27 arranged in a ring form are fixedly mounted on the right outer wall of the rotating shaft 23 . The right sides of the three cleaning plates 27 overlap the left side of the filter screen 26 .

[0029] The three cleaning plates 27 can rotate and clean the filter screen 26 by rotating the rotating shaft 23 .

[0030] like Figure 4 As shown, a slag discharge barrel 28 is fixedly installed in the middle position of the bottom of the outer wall of the liquid inlet pipe 21, a slag discharge groove 29 is opened at the lower end of the slag discharge barrel 28, a cover 210 is overlapped in the middle of the lower end of the slag discharge barrel 28, and the four sides of the cover 210 are threadedly connected with fixing bolts 211 that pass through the bottom of the cover 210, and the lower end of the cover 210 is opened with four threaded holes 212 that match the four fixing bolts 211.

[0031] When no medium passes through the liquid inlet pipe 21, dirt and impurities will remain in the slag discharge barrel 28. By unscrewing the four fixing bolts 211, the cover 210 can be moved away from the slag discharge barrel 28, so that the remaining dirt and impurities are discharged from the slag discharge groove 29. The size of the cover 210 is larger than that of the slag discharge groove 29.

[0032] like Figure 5 As shown, the manual opening and closing component 3 includes a bevel gear 31, the inner wall of the bevel gear 31 is fixedly sleeved with the top of the outer wall of the valve stem 12, the bevel gear 31 is located in the control box 11, and the middle position of the bottom right side of the control box 11 is threadedly connected with an adjusting screw 32 that passes through the right part of the control box 11, and the left end of the adjusting screw 32 is rotatably connected with a moving plate 33, and the front and rear positions of the bottom right side of the control box 11 are slidably connected with sliding rods 34 that pass through the right part of the control box 11, the left ends of the two sliding rods 34 are fixedly connected with the front and rear positions of the bottom right side of the moving plate 33, and the right ends of the two sliding rods 34 are fixedly installed with positioning blocks 35.

[0033] By rotating the adjusting screw 32, the adjusting screw 32 is threadedly connected to the control box 11 to drive the movable plate 33 to move, and the two slide bars 34 have a limiting effect on the movement of the movable plate 33, wherein the diameters of the two positioning blocks 35 are larger than the diameters of the corresponding slide bars 34, so that the moving distance of the movable plate 33 is specified.

[0034] like Figure 5 As shown, the right bottom of the control box 11 is slidably connected with a rectangular connecting plate 36 that passes through the right part of the control box 11, the connecting plate 36 is located above the adjusting screw 32, the left part of the outer wall of the connecting plate 36 is fixedly connected to the top inner wall of the movable plate 33, the inner wall of the connecting plate 36 is rotatably connected with a rotating rod 37 that passes through the left part of the connecting plate 36, and a hand wheel is fixedly installed on the right end of the rotating rod 37.

[0035] By moving the movable plate 33, the connecting plate 36 can drive the rotating rod 37 to move to the specified position. A rectangular slide groove matching the connecting plate 36 is opened at the bottom right side of the control box 11. The outer wall of the connecting plate 36 is slidably connected to the inner wall of the rectangular slide groove. At the same time, the handwheel can drive the rotating rod 37 to rotate in the inner wall of the connecting plate 36.

[0036] like Figure 5 As shown, a bevel gear 2 38 is fixedly sleeved on the left portion of the outer wall of the rotating rod 37 , and the outer surface of the bevel gear 2 38 is meshed with the outer surface of the bevel gear 1 31 .

[0037] By rotating the rotating rod 37, the bevel gear 1 31 meshes with the bevel gear 2 38 to drive the valve stem 12 to rotate, so that the ball valve body 1 can be manually opened and closed by a hand wheel.

[0038] The working principle of the utility model is as follows: the medium enters the ball valve body 1 from the liquid inlet pipe 21, and the impact force generated by the flow of the medium drives the fan blade 24 to rotate, thereby rotating the shaft 23 and the three scrapers 25, and the three scrapers 25 can scrape and clean the inner wall of the liquid inlet pipe 21, and at the same time, the three cleaning plates 27 can clean the filter screen 26 when rotating. When no medium passes through the liquid inlet pipe 21, dirt and impurities will remain in the slag discharge barrel 28, and the cover 210 can be moved away from the slag discharge barrel 28 by unscrewing the four fixing bolts 211, so that the remaining dirt and impurities are discharged from the slag discharge groove 29.

[0039] If the electric ball valve is not energized, rotate the adjusting screw 32, which drives the movable plate 33 to move by being threadedly connected to the control box 11, and the movable plate 33 drives the connecting plate 36 to move. When the two positioning blocks 35 contact the right side of the control box 11, the adjusting screw 32 is no longer rotated, and then the hand wheel is turned, which drives the rotating rod 37 to rotate, and the bevel gear 1 31 drives the valve stem 12 to rotate by meshing with the bevel gear 2 38, so that the ball valve body 1 can be manually opened and closed by the hand wheel.

[0040] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An electric ball valve based on pressure balance, comprising a ball valve body (1), characterized in that: A control box (11) is fixedly mounted on the top of the ball valve body (1), an actuator is fixedly mounted on the top of the inner cavity of the control box (11), a pressure mechanism (13) is fixedly mounted on the upper end of the control box (11), the top of the ball valve body (1) is rotatably connected to a valve stem (12) that passes through the bottom of the control box (11), a manual opening and closing component (3) is movably connected to the right bottom of the control box (11), the left part of the manual opening and closing component (3) is movably connected to the top of the outer wall of the valve stem (12), and a cleaning and collecting component (2) is fixedly mounted on the left part of the ball valve body (1).

2. The electric ball valve based on pressure balance according to claim 1, characterized in that: The cleaning and collecting assembly (2) comprises a liquid inlet pipe (21), the right side of the liquid inlet pipe (21) is fixedly mounted on the left side of the ball valve body (1), a fixed plate (22) is fixedly mounted on the left side of the top of the inner wall of the liquid inlet pipe (21), the left side of the fixed plate (22) is rotatably connected to a rotating shaft (23) penetrating the left side of the fixed plate (22), a plurality of fan blades (24) arranged in a ring form are fixedly mounted on the left side of the outer wall of the rotating shaft (23), three scrapers (25) arranged in a ring form are fixedly mounted on the middle part of the outer wall of the rotating shaft (23), and one end of the three scrapers (25) away from the axis of the rotating shaft (23) overlaps the inner wall of the liquid inlet pipe (21).

3. The electric ball valve based on pressure balance according to claim 2 is characterized in that: A filter screen (26) is fixedly mounted on the right portion of the inner wall of the liquid inlet pipe (21), and three cleaning plates (27) arranged in a ring form are fixedly mounted on the right portion of the outer wall of the rotating shaft (23), and the right sides of the three cleaning plates (27) overlap with the left side of the filter screen (26).

4. The electric ball valve based on pressure balance according to claim 3 is characterized in that: A slag discharge barrel (28) is fixedly installed at the middle position of the bottom of the outer wall of the liquid inlet pipe (21), a slag discharge groove (29) is provided at the lower end of the slag discharge barrel (28), a sealing cover (210) is overlapped at the middle of the lower end of the slag discharge barrel (28), four side surfaces of the sealing cover (210) are threadedly connected with fixing bolts (211) that penetrate through the bottom of the sealing cover (210), and four threaded holes (212) matching the four fixing bolts (211) are provided at the lower end of the sealing cover (210).

5. The electric ball valve based on pressure balance according to claim 1, characterized in that: The manual opening and closing assembly (3) comprises a bevel gear (31), the inner wall of which is fixedly sleeved with the top of the outer wall of the valve stem (12); the bevel gear (31) is located in the control box (11); an adjusting screw (32) which passes through the right part of the control box (11) is threadedly connected to the middle position of the right bottom of the control box (11); the left end of the adjusting screw (32) is rotatably connected to a moving plate (33); the front and rear positions of the right bottom of the control box (11) are both slidably connected to sliding rods (34) which pass through the right part of the control box (11); the left ends of the two sliding rods (34) are fixedly connected to the front and rear positions of the right bottom of the moving plate (33); and the right ends of the two sliding rods (34) are fixedly installed with positioning blocks (35).

6. The electric ball valve based on pressure balance according to claim 5, characterized in that: A rectangular connecting plate (36) penetrating the right part of the control box (11) is slidably connected to the bottom right side of the control box (11); the connecting plate (36) is located above the adjusting screw (32); the left part of the outer wall of the connecting plate (36) is fixedly connected to the top inner wall of the movable plate (33); the inner wall of the connecting plate (36) is rotatably connected to a rotating rod (37) penetrating the left part of the connecting plate (36); a hand wheel is fixedly mounted on the right end of the rotating rod (37).

7. The electric ball valve based on pressure balance according to claim 6, characterized in that: A second bevel gear (38) is fixedly sleeved on the left portion of the outer wall of the rotating rod (37), and the outer surface of the second bevel gear (38) is meshed with the outer surface of the first bevel gear (31).

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