Backflow prevention one-way valve
By designing adjustment devices, including rectangular plates, grooves, adjustment plates and tie rods, the problem of inconvenient rotation of existing one-way valve handles is solved, and more convenient valve plate position adjustment is achieved.
Patent Information
- Application Number
- CN202421967076.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The handle size of the existing one-way valve is fixed and the rotational arm is limited, which makes it inconvenient for staff to adjust.
An adjustment device including a rectangular plate, groove, adjustment plate and pull rod is designed. The adjustment plate and rectangular plate are driven to rotate through the pull rod, increasing the force arm of the rectangular plate, so that the staff can adjust the position of the valve plate.
By increasing the force arm of the rectangular plate, the rotation process of the staff on the handle is simplified and the convenience of regulating the position of the valve plate is improved.
Smart Images
Figure CN222836286U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of one-way valves, in particular to a one-way valve for preventing backflow. Background Art
[0002] A one-way valve is a directional control valve that allows fluid to flow only along the inlet, but not back through the outlet. It is now mostly used in situations where fluid flow in one direction is not allowed, such as when the oil tank is refueling the engine, a one-way valve is set between the oil tank and the engine to prevent the oil in the engine from flowing back into the oil tank when the engine stops working.
[0003] In the prior art, some one-way valves are opened or closed by a handle, but the size of the handle is fixed and the force arm for turning the handle is limited, which makes it inconvenient for the staff to turn the handle, causing inconvenience to the staff. Utility Model Content
[0004] The utility model is a one-way valve for preventing backflow, which is proposed to solve the shortcomings in the prior art.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a one-way valve for preventing backflow, comprising a valve body, a valve plate is arranged inside the valve body, a screw is threadedly connected to the valve body corresponding to the valve plate, one end of the screw is rotatably connected to the valve plate, an adjusting device is arranged on the top of the valve body, the adjusting device comprises a rectangular plate, the rectangular plate is arranged on the top of the valve body, the rectangular plate is fixedly connected to one end of the screw, a groove is opened inside the rectangular plate, the rectangular plate is slidably connected to the adjusting plate by means of the groove, and a pull rod is fixedly connected to one side of the adjusting plate.
[0006] The effect achieved by the above components is: when it is necessary to adjust the position of the valve plate through the rectangular plate, the staff pulls the pull rod, and the pull rod drives the adjusting plate to move in the groove of the rectangular plate. The total length of the rectangular plate, the adjusting plate and the pull rod is the same. At this time, the staff turns the pull rod again, and the pull rod drives the adjusting plate and the rectangular plate to rotate, and the rectangular plate drives the screw to rotate, and the screw drives the valve plate to move up and down. The force arm of the rectangular plate is increased through the adjusting device, which makes it convenient for the staff to rotate the rectangular plate, bringing convenience to the staff to adjust the position of the valve plate.
[0007] Preferably, the arc surface of the pull rod is covered with a rubber sleeve, and the surface of the rubber sleeve is provided with anti-slip patterns.
[0008] The effect achieved by the above components is: by arranging the rubber sleeve, the friction between the staff's hand and the pull rod is increased, thereby facilitating the staff to move the pull rod, bringing convenience to the staff.
[0009] Preferably, a slide groove is provided on the upper surface of the rectangular plate, a slider is fixedly connected to the upper surface of the adjustment plate, and the slider is slidably fitted in the slide groove.
[0010] The effect achieved by the above components is: by moving the slider of the adjustment plate in the slide groove of the rectangular plate, the moving direction of the adjustment plate is restricted, thereby improving the stability of the movement of the adjustment plate and preventing the adjustment plate from shaking.
[0011] Preferably, a blocking rod is fixedly connected to the upper surface of the rectangular plate, and the blocking rod is located at the opening of the sliding groove.
[0012] The effect achieved by the above components is: by setting the pull rod, the maximum displacement of the slider is limited, thereby preventing the slider and the adjustment plate from moving out of the rectangular plate.
[0013] Preferably, the sliding block is an iron plate, and a magnetic plate is fixedly connected to the upper surface of the rectangular plate.
[0014] The effect achieved by the above components is: through the magnetic attraction of the magnetic plate to the iron slider, when the staff has finished using the pull rod, the adjustment plate and the pull rod automatically enter the groove of the rectangular plate for storage, which brings convenience to the staff.
[0015] Preferably, an auxiliary device is provided inside the valve body, and the auxiliary device includes a gasket, which is fixedly connected to the inside of the valve body, one side of the gasket is fixedly connected to a spring, one end of the spring is fixedly connected to a cover plate, the size of the cover plate is larger than the size of the pipes on both sides of the valve body, and one side of the cover plate is fixedly connected to a sealing ring.
[0016] The effects achieved by the above components are: when the fluid flows in the forward direction, the fluid squeezes the cover plate, the cover plate moves toward the gasket, the spring contracts, and the fluid flows through the gap between the inner wall of the valve body and the cover plate; when the fluid flows in the reverse direction, under the action of the spring return force, the cover plate squeezes the inner wall of the valve body with the help of the sealing ring, thereby achieving the effect of sealing the pipeline at one end of the valve body, and achieving the effect of controlling the flow direction of the fluid inside the valve body through the auxiliary device, thereby avoiding the backflow of the fluid inside the valve body.
[0017] Preferably, two mutually symmetrical limiting rods are slidably inserted on the surface of the pad, and one end of the limiting rod is fixedly connected to the cover plate.
[0018] The effect achieved by the above components is: by setting the limit rod, the moving direction of the cover plate is limited, thereby improving the stability of the cover plate movement and preventing the cover plate from rotating.
[0019] Preferably, a plurality of sealing rings are fixedly connected to a side of the sealing ring away from the cover plate, and the plurality of sealing rings are concentric rings.
[0020] The effect achieved by the above components is: by setting the sealing ring, when the cover plate with the sealing ring is in contact with the inner wall of the valve body, the sealing ring is squeezed, and several sealing rings form multiple barriers between the inner wall of the valve body and the cover plate, thereby improving the sealing effect of the sealing ring.
[0021] In summary, the beneficial effects of the utility model are:
[0022] When the position of the valve plate needs to be adjusted through the rectangular plate, the staff pulls the pull rod, and the pull rod moves the adjusting plate in the groove of the rectangular plate. The total length of the rectangular plate, the adjusting plate and the pull rod is longer. At this time, the staff turns the pull rod again, and the pull rod rotates the adjusting plate and the rectangular plate, and the rectangular plate rotates with the screw, and the screw moves the valve plate up and down. The force arm of the rectangular plate is increased through the adjusting device, which makes it convenient for the staff to rotate the rectangular plate, bringing convenience to the staff to adjust the position of the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 For this utility model Figure 1 A cross-sectional view of
[0025] Figure 3 It is a three-dimensional structural schematic diagram of the regulating device of the utility model;
[0026] Figure 4 For this utility model Figure 3 Exploded diagram of
[0027] Figure 5 It is a three-dimensional structural schematic diagram of the auxiliary device of the utility model;
[0028] Figure 6 It is a cross-sectional view of the sealing ring of the utility model.
[0029] Legend: 1. Valve body; 2. Valve plate; 3. Adjusting device; 31. Rectangular plate; 32. Groove; 33. Adjusting plate; 34. Pull rod; 35. Rubber sleeve; 36. Slide groove; 37. Slider; 38. Stop rod; 39. Magnetic plate; 4. Auxiliary device; 41. Gasket; 42. Spring; 43. Cover plate; 44. Sealing ring; 45. Limit rod; 46. Sealing ring. DETAILED DESCRIPTION
[0030] Reference Figure 1-6As shown, this embodiment discloses a backflow prevention one-way valve, including a valve body 1, a valve plate 2 is arranged inside the valve body 1, a screw is threadedly connected to the valve body 1 corresponding to the valve plate 2, one end of the screw is rotatably connected to the valve plate 2, an adjusting device 3 is provided on the top of the valve body 1, and an auxiliary device 4 is provided inside the valve body 1.
[0031] Reference Figure 1-6 As shown, the adjusting device 3 includes a rectangular plate 31, which is arranged on the top of the valve body 1, and is fixedly connected to one end of the screw rod. A groove 32 is provided inside the rectangular plate 31, and the rectangular plate 31 is slidably connected to the adjusting plate 33 by means of the groove 32, and a pull rod 34 is fixedly connected to one side of the adjusting plate 33. When the position of the valve plate 2 needs to be adjusted through the rectangular plate 31, the staff pulls the pull rod 34, and the pull rod 34 moves the adjusting plate 33 in the groove 32 of the rectangular plate 31, and the total length of the rectangular plate 31, the adjusting plate 33 and the pull rod 34 is the same as the side length. At this time, the staff rotates the pull rod 34 again, and the pull rod 34 rotates the adjusting plate 33 and the rectangular plate 31, and the rectangular plate 31 rotates with the screw rod, and the screw moves the valve plate 2 up and down, and the force arm of the rectangular plate 31 is increased by the adjusting device 3, so that it is convenient for the staff to rotate the rectangular plate 31, and it is convenient for the staff to adjust the position of the valve plate 2.
[0032] Reference Figure 1-6 As shown, the arc surface of the pull rod 34 is covered with a rubber sleeve 35, and the surface of the rubber sleeve 35 is provided with anti-slip grooves. The friction between the hand of the staff and the pull rod 34 is increased by setting the rubber sleeve 35, so that it is convenient for the staff to move the pull rod 34, which brings convenience to the staff. A slide groove 36 is provided on the upper surface of the rectangular plate 31, and a slider 37 is fixedly connected to the upper surface of the adjustment plate 33, and the slider 37 is slidably adapted to the slide groove 36. The slider 37 of the adjustment plate 33 moves in the slide groove 36 of the rectangular plate 31, so as to achieve the effect of limiting the moving direction of the adjustment plate 33, thereby improving the stability of the movement of the adjustment plate 33 and preventing the adjustment plate 33 from shaking. A baffle 38 is fixedly connected to the upper surface of the rectangular plate 31, and the baffle 38 is located at the opening of the slide groove 36. The pull rod 34 is provided to achieve the effect of limiting the maximum displacement of the slider 37, so as to prevent the slider 37 and the adjustment plate 33 from moving out of the rectangular plate 31. The slider 37 is an iron plate, and a magnetic plate 39 is fixedly connected to the upper surface of the rectangular plate 31. Through the magnetic attraction of the magnetic plate 39 to the iron slider 37, when the staff has finished using the pull rod 34, the adjustment plate 33 and the pull rod 34 automatically enter the groove 32 of the rectangular plate 31 for storage, which brings convenience to the staff.
[0033] Reference Figure 1-6As shown, the auxiliary device 4 includes a gasket 41, which is fixedly connected to the inside of the valve body 1, a spring 42 is fixedly connected to one side of the gasket 41, a cover plate 43 is fixedly connected to one end of the spring 42, the size of the cover plate 43 is larger than the size of the pipes on both sides of the valve body 1, and a sealing ring 44 is fixedly connected to one side of the cover plate 43. When the fluid flows in the forward direction, the fluid squeezes the cover plate 43, the cover plate 43 moves toward the direction of the gasket 41, the spring 42 contracts, and the fluid flows through the gap between the inner wall of the valve body 1 and the cover plate 43. When the fluid flows in the reverse direction, under the action of the spring 42 reset elastic force, the cover plate 43 squeezes the inner wall of the valve body 1 with the help of the sealing ring 44, so as to achieve the effect of sealing the pipe at one end of the valve body 1. The auxiliary device 4 achieves the effect of controlling the flow direction of the fluid inside the valve body 1, and avoiding the backflow of the fluid inside the valve body 1.
[0034] Reference Figure 1-6 As shown, two symmetrical limiting rods 45 are slidably inserted on the surface of the gasket 41, and one end of the limiting rod 45 is fixedly connected to the cover plate 43. By setting the limiting rod 45, the effect of limiting the moving direction of the cover plate 43 is achieved, thereby improving the stability of the movement of the cover plate 43 and preventing the cover plate 43 from rotating. A plurality of sealing rings 46 are fixedly connected to the side of the sealing ring 44 away from the cover plate 43, and the plurality of sealing rings 46 are concentric rings. By setting the sealing ring 46, when the cover plate 43 is fitted with the inner wall of the valve body 1 with the sealing ring 44, the sealing ring 46 is squeezed, and the plurality of sealing rings 46 form multiple barriers between the inner wall of the valve body 1 and the cover plate 43, thereby improving the sealing effect of the sealing ring 44.
[0035] When the adjusting device 3 is in the state of being moved to the position of the stopper 38, the staff member turns the pull rod 34 again, and the pull rod 34 drives the adjusting plate 33 and the pull rod 34 to rotate, and the rectangular plate 31 drives the screw to rotate, and the screw drives the valve plate 2 to move up and down. After adjusting the valve plate 2, the staff member releases the pull rod 34, and under the action of the magnetic force of the magnetic plate 39 on the iron slider 37, the adjusting plate 33 and the pull rod 34 automatically enter the groove 32 of the rectangular plate 31 for storage, and the force arm of the rectangular plate 31 is increased by the adjusting device 3, so that the staff member can rotate the rectangular plate 31 conveniently, and the staff member can adjust the position of the valve plate 2 conveniently.
[0036] When the fluid flows in the forward direction, the fluid squeezes the cover plate 43, and the cover plate 43 moves toward the gasket 41, the spring 42 contracts, and the fluid flows through the gap between the inner wall of the valve body 1 and the cover plate 43. When the fluid flows in the reverse direction, under the action of the restoring elastic force of the spring 42, the cover plate 43 squeezes the inner wall of the valve body 1 with the help of the sealing ring 44. At this time, the sealing ring 46 is squeezed, and several sealing rings 46 form multiple barriers between the inner wall of the valve body 1 and the cover plate 43, thereby improving the sealing effect of the sealing ring 44. The auxiliary device 4 achieves the effect of controlling the flow direction of the fluid inside the valve body 1 to avoid the backflow of the fluid inside the valve body 1.
Claims
1. A one-way valve for preventing backflow, comprising a valve body (1), characterized in that: A valve plate (2) is arranged inside the valve body (1), and a screw is threadedly connected to the valve body (1) at a position corresponding to the valve plate (2), and one end of the screw is rotatably connected to the valve plate (2). An adjusting device (3) is arranged on the top of the valve body (1), and the adjusting device (3) comprises a rectangular plate (31), and the rectangular plate (31) is arranged on the top of the valve body (1), and the rectangular plate (31) is fixedly connected to one end of the screw. A groove (32) is provided inside the rectangular plate (31), and the rectangular plate (31) is slidably connected to an adjusting plate (33) by means of the groove (32), and a pull rod (34) is fixedly connected to one side of the adjusting plate (33).
2. The one-way valve for preventing backflow according to claim 1, characterized in that: The arc surface of the pull rod (34) is covered with a rubber sleeve (35), and the surface of the rubber sleeve (35) is provided with anti-slip grooves.
3. The one-way valve for preventing backflow according to claim 1, characterized in that: The upper surface of the rectangular plate (31) is provided with a sliding groove (36), and the upper surface of the adjustment plate (33) is fixedly connected with a sliding block (37), and the sliding block (37) is slidably matched with the sliding groove (36).
4. A one-way valve for preventing backflow according to claim 3, characterized in that: A blocking rod (38) is fixedly connected to the upper surface of the rectangular plate (31), and the blocking rod (38) is located at the opening of the sliding groove (36).
5. The one-way valve for preventing backflow according to claim 3, characterized in that: The sliding block (37) is an iron plate, and a magnetic plate (39) is fixedly connected to the upper surface of the rectangular plate (31).
6. The one-way valve for preventing backflow according to claim 1, characterized in that: An auxiliary device (4) is provided inside the valve body (1), and the auxiliary device (4) comprises a gasket (41), and the gasket (41) is fixedly connected to the inside of the valve body (1), and a spring (42) is fixedly connected to one side of the gasket (41), and a cover plate (43) is fixedly connected to one end of the spring (42), and the size of the cover plate (43) is larger than the size of the pipes on both sides of the valve body (1), and a sealing ring (44) is fixedly connected to one side of the cover plate (43).
7. The one-way valve for preventing backflow according to claim 6, characterized in that: Two mutually symmetrical limiting rods (45) are slidably inserted on the surface of the pad (41), and one end of the limiting rod (45) is fixedly connected to the cover plate (43).
8. The one-way valve for preventing backflow according to claim 6, characterized in that: A plurality of sealing rings (46) are fixedly connected to the side of the sealing ring (44) away from the cover plate (43), and the plurality of sealing rings (46) are concentric rings.