Air valve capable of preventing dust accumulation

Abstract

The utility model discloses an air valve capable of preventing dust accumulation, which relates to the technical field of air valves and comprises a valve frame and a gear I. A support is arranged at the top of the valve frame, a positive and negative tooth trapezoidal screw rod is rotatably arranged on the support, and the right end of the positive and negative tooth trapezoidal screw rod is connected with a crank handle. A first lead screw nut and a second lead screw nut are connected to the outer portion of the positive and negative tooth trapezoidal lead screw, a first connecting block is arranged at the rear end of the first lead screw nut, a first adjusting arm is connected to the top of the first connecting block through a rotating shaft, a rotating table is connected to the other end of the first adjusting arm through a rotating shaft, and an adjusting shaft is arranged in the middle of the rotating table in a penetrating mode. According to the air valve capable of preventing dust accumulation, a first lead screw nut and a second lead screw nut do face-to-face or back-to-back horizontal displacement along the outer portion of a positive and negative tooth trapezoid lead screw by rotating a hand crank, a first adjusting arm on a first connecting block and a second adjusting arm on a second connecting block drive a rotating table to rotate in the displacement process, and rotating force is provided for an adjusting shaft; and the angles of the blades are adjustable.

Description

Technical Field

[0001] The utility model relates to the technical field of air valves, in particular to an air valve for preventing dust accumulation. Background Technique

[0002] An air valve, namely an air volume regulating valve, is an indispensable end accessory of a central air conditioner in the ventilation, air conditioning and air purification projects of industrial factories and civil buildings. It is generally used in the air ducts of air conditioners and ventilation systems to regulate the air volume of branch pipes and can also be used for the mixed regulation of fresh air and return air.

[0003] After long-term use, dust is likely to accumulate on the surface of the blades of the existing air valves, which not only increases the weight but also causes the problem of reduced air volume.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and an air valve for preventing dust accumulation is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide an air valve for preventing dust accumulation to solve the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An air valve for preventing dust accumulation, including a valve frame and a first gear. A support is arranged at the top of the valve frame, and a positive and negative thread trapezoidal lead screw is rotatably arranged on the support. The right end of the positive and negative thread trapezoidal lead screw is connected with a hand crank, and a first lead screw nut and a second lead screw nut are respectively connected to the outer part of the positive and negative thread trapezoidal lead screw. A first connecting block is arranged at the rear end of the first lead screw nut, and a first adjusting arm is connected to the top of the first connecting block through a rotating shaft. The other end of the first adjusting arm is connected to a rotating table through a rotating shaft, and an adjusting shaft passes through the middle of the rotating table. A second connecting block is arranged at the front end of the second lead screw nut, and a second adjusting arm is connected to the top of the second connecting block through a rotating shaft. The first gear is arranged below the outside of the adjusting shaft, and a second gear is arranged on the left side of the first gear. A first transmission shaft passes through the middle of the second gear. The outside of the adjusting shaft is connected with a second transmission shaft through a first transmission belt, and the outside of the adjusting shaft is connected with a third transmission shaft through a second transmission belt. The outside of the second transmission shaft is connected with a rotating rod through a third transmission belt, and a third gear is arranged above the outside of the rotating rod. A fourth gear is arranged on the right side of the third gear, and a fourth transmission shaft passes through the middle of the fourth gear. The tops of the first transmission shaft, the second transmission shaft, the third transmission shaft and the fourth transmission shaft penetrate through the bottom of the valve frame and are all connected with blades. An electrostatic eliminator is installed above the inside of the valve frame.

[0007] Further, the positive and negative thread trapezoidal lead screw and the adjusting shaft are perpendicular to each other. The end of the adjusting shaft far from the rotating table sequentially penetrates through the support and the valve frame, and the adjusting shaft is rotatably connected with the valve frame.

[0008] Further, the first connecting block and the second connecting block are in a right-angled structure, and the first adjusting arm and the second adjusting arm are symmetrically distributed with respect to the left-handed and right-handed trapezoidal lead screw.

[0009] Further, the adjusting shaft, the second transmission shaft, the third transmission shaft and the rotating rod rotate in the same direction, and the rotating rod is rotatably connected to the valve frame.

[0010] Further, the first transmission shaft and the fourth transmission shaft rotate in the same direction, and the second transmission shaft and the fourth transmission shaft rotate in opposite directions.

[0011] Further, four blades are provided, and the adjusting shaft, the first transmission shaft, the second transmission shaft, the third transmission shaft, the rotating rod and the fourth transmission shaft are parallel to each other.

[0012] The utility model provides a wind valve for preventing dust accumulation, which has the following beneficial effects:

[0013] 1. In the utility model, the first external gear of the adjusting shaft drives the second gear to drive the first transmission shaft to rotate, the adjusting shaft drives the first transmission belt to drive the second transmission shaft to rotate, the adjusting shaft drives the second transmission belt to drive the third transmission shaft to rotate, the second transmission shaft drives the third transmission belt to drive the rotating rod to rotate, and the third external gear of the rotating rod drives the fourth gear to drive the fourth transmission shaft to rotate, so that the blades connected to the third transmission shaft and the first transmission shaft are in an inverted eight shape, and the air flow velocity passing through when the blades connected to the second transmission shaft and the fourth transmission shaft are in an inverted eight shape is further increased, so that when air passes through the gaps between the blades, the dust on the blade surfaces is blown away, avoiding dust accumulation.

[0014] 2. In the utility model, by rotating the hand crank, the first screw nut and the second screw nut make horizontal displacements towards or away from each other along the outside of the left-handed and right-handed trapezoidal lead screw. During the displacement process, the first adjusting arm on the first connecting block and the second adjusting arm on the second connecting block will drive the rotating table to rotate, providing a rotating force for the adjusting shaft, so that the blade angle is adjustable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a bottom view three-dimensional structure schematic diagram of the valve frame of a wind valve for preventing dust accumulation according to the utility model;

[0016] Figure 2 is a front view sectional structure schematic diagram of the valve frame of a wind valve for preventing dust accumulation according to the utility model;

[0017] Figure 3 is a top view structure schematic diagram of the support of a wind valve for preventing dust accumulation according to the utility model.

[0018] In the figure: 1. Valve frame; 2. Support; 3. Trapezoidal screw rod with left - hand and right - hand threads; 4. Hand crank; 5. First screw nut; 6. Second screw nut; 7. First connecting block; 8. Second connecting block; 9. First adjusting arm; 10. Second adjusting arm; 11. Rotary table; 12. Adjusting shaft; 13. First gear; 14. Second gear; 15. First transmission shaft; 16. First transmission belt; 17. Second transmission shaft; 18. Second transmission belt; 19. Third transmission shaft; 20. Third transmission belt; 21. Rotating rod; 22. Third gear; 23. Fourth gear; 24. Fourth transmission shaft; 25. Blade; 26. Static eliminator. Specific embodiments

[0019] The following further describes in detail the embodiments of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0020] As Figure 1 and Figure 2 shown, a wind valve for preventing dust accumulation includes a valve frame 1 and a first gear 13. The first gear 13 is arranged below the outside of the adjusting shaft 12, and a second gear 14 is arranged on the left side of the first gear 13. A first transmission shaft 15 passes through the middle of the second gear 14. The outside of the adjusting shaft 12 is connected to a second transmission shaft 17 through a first transmission belt 16, and the outside of the adjusting shaft 12 is connected to a third transmission shaft 19 through a second transmission belt 18. The outside of the second transmission shaft 17 is connected to a rotating rod 21 through a third transmission belt 20. A third gear 22 is arranged above the outside of the rotating rod 21, and a fourth gear 23 is arranged on the right side of the third gear 22. A fourth transmission shaft 24 passes through the middle of the fourth gear 23. The tops of the first transmission shaft 15, the second transmission shaft 17, the third transmission shaft 19 and the fourth transmission shaft 24 penetrate the bottom of the valve frame 1 and are all connected to blades 25. A static eliminator 26 is installed above the inside of the valve frame 1. The trapezoidal screw rod 3 with left - hand and right - hand threads is perpendicular to the adjusting shaft 12. One end of the adjusting shaft 12 away from the rotary table 11 sequentially penetrates the support 2 and the valve frame 1, and the adjusting shaft 12 is rotatably connected to the valve frame 1. The adjusting shaft 12, the second transmission shaft 17, the third transmission shaft 19 and the rotating rod 21 rotate in the same direction, and the rotating rod 21 is rotatably connected to the valve frame 1. The first transmission shaft 15 and the fourth transmission shaft 24 rotate in the same direction, and the second transmission shaft 17 and the fourth transmission shaft 24 rotate in opposite directions. There are four blades 25. The adjusting shaft 12, the first transmission shaft 15, the second transmission shaft 17, the third transmission shaft 19, the rotating rod 21 and the fourth transmission shaft 24 are parallel to each other.

[0021] The specific operation is as follows: By adjusting the external gear one 13 of the adjusting shaft 12 to drive the gear two 14 for transmission, the first transmission shaft 15 rotates. The adjusting shaft 12 drives the first transmission belt 16 for transmission to make the second transmission shaft 17 rotate. The adjusting shaft 12 drives the second transmission belt 18 for transmission to make the third transmission shaft 19 rotate. The second transmission shaft 17 drives the third transmission belt 20 for transmission to make the rotating rod 21 rotate. The external gear three 22 of the rotating rod 21 drives the gear four 23 for transmission to make the fourth transmission shaft 24 rotate, so that the blades 25 connected to the third transmission shaft 19 and the first transmission shaft 15 are in an inverted eight shape. When the blades 25 connected to the second transmission shaft 17 and the fourth transmission shaft 24 are in an inverted eight shape, the air flow rate passing through is further increased. Thus, when the air passes through the gaps between the blades 25, the dust on the surface of the blades 25 is blown away, avoiding dust accumulation.

[0022] As Figure 2 and Figure 3 shown in the figure, a support 2 is provided at the top of the valve frame 1, and a left - and - right - hand trapezoidal lead screw 3 is rotatably provided on the support 2. The right end of the left - and - right - hand trapezoidal lead screw 3 is connected with a hand crank 4, and a first lead screw nut 5 and a second lead screw nut 6 are respectively connected to the outside of the left - and - right - hand trapezoidal lead screw 3. A first connecting block 7 is provided at the rear end of the first lead screw nut 5, and the top of the first connecting block 7 is connected with a first adjusting arm 9 through a rotating shaft. The other end of the first adjusting arm 9 is connected with a rotating table 11 through a rotating shaft, and an adjusting shaft 12 passes through the middle of the rotating table 11. A second connecting block 8 is provided at the front end of the second lead screw nut 6, and the top of the second connecting block 8 is connected with a second adjusting arm 10 through a rotating shaft. The first connecting block 7 and the second connecting block 8 are in a right - angled structure, and the first adjusting arm 9 and the second adjusting arm 10 are symmetrically distributed with respect to the left - and - right - hand trapezoidal lead screw 3.

[0023] The specific operation is as follows: By rotating the hand crank 4, the first lead screw nut 5 and the second lead screw nut 6 make a horizontal displacement towards or away from each other along the outside of the left - and - right - hand trapezoidal lead screw 3. During the displacement process, the first adjusting arm 9 on the first connecting block 7 and the second adjusting arm 10 on the second connecting block 8 will drive the rotating table 11 to rotate, providing a rotational force for the adjusting shaft 12, so that the angle of the blades 25 is adjustable.

[0024] In summary, for this air valve that prevents dust accumulation, during use, first connect the valve frame 1 with the pipeline of the ventilation system. When it is necessary to adjust the air volume, the hand crank 4 can be rotated to provide a rotational force for the left - and - right - hand trapezoidal lead screw 3, so that the first lead screw nut 5 and the second lead screw nut 6 respectively drive the first connecting block 7 and the second connecting block 8 to make a horizontal displacement towards or away from each other along the outside of the left - and - right - hand trapezoidal lead screw 3;

[0025] When the first lead screw nut 5 and the second lead screw nut 6 make a horizontal displacement towards each other, the first adjusting arm 9 and the second adjusting arm 10 will drive the rotating table 11 and the adjusting shaft 12 to rotate clockwise. When the first lead screw nut 5 and the second lead screw nut 6 make a horizontal displacement away from each other, the first adjusting arm 9 and the second adjusting arm 10 will drive the rotating table 11 and the adjusting shaft 12 to rotate counterclockwise;

[0026] The external gear one 13 of the adjusting shaft 12 that rotates clockwise drives the gear two 14 to drive the rotation of the transmission shaft one 15. The adjusting shaft 12 drives the transmission belt one 16 to drive the rotation of the transmission shaft two 17. The adjusting shaft 12 drives the transmission belt two 18 to drive the rotation of the transmission shaft three 19. The transmission shaft two 17 drives the transmission belt three 20 to drive the rotation of the rotating rod 21. The external gear three 22 of the rotating rod 21 drives the gear four 23 to drive the rotation of the transmission shaft four 24. The blades 25 connected to the transmission shaft three 19 and the transmission shaft one 15 can be adjusted to an inverted eight shape or a parallel distribution. The blades 25 connected to the transmission shaft two 17 and the transmission shaft four 24 can be adjusted to an inverted eight shape or a parallel distribution. At this time, the gaps generated between two adjacent blades 25 can be used for air flow. Controlling the size of the gaps between the blades 25 can control the air volume.

[0027] The static eliminator 26 is arranged in the valve frame 1 near the blade 25 and can eliminate the static electricity on the surface of the blade 25. When the adjusting shaft 12 rotates counterclockwise to reduce the gap between the blades 25, the air flow rate will increase accordingly. Thus, when the air passes through the gap between the blades 25, the dust on the surface of the blades 25 can be blown away, avoiding dust accumulation and ensuring the use effect of the air valve.

[0028] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A damper for preventing dust accumulation, comprising a valve frame (1) and a gear (13), characterized in that: A support (2) is provided at the top of the valve frame (1), and a positive and negative threaded trapezoidal screw (3) is rotatably provided on the support (2), the right end of the positive and negative threaded trapezoidal screw (3) is connected to a hand crank (4), and the outside of the positive and negative threaded trapezoidal screw (3) is respectively connected to a screw nut 1 (5) and a screw nut 2 (6), the rear end of the screw nut 1 (5) is provided with a connecting block 1 (7), and the top of the connecting block 1 (7) is connected to an adjusting arm 1 (9) via a rotating shaft, the other end of the adjusting arm 1 (9) is connected to a rotating platform (11) via a rotating shaft, and an adjusting shaft (12) is passed through the middle of the rotating platform (11), the front end of the screw nut 2 (6) is provided with a connecting block 2 (8), and the top of the connecting block 2 (8) is connected to an adjusting arm 2 (10) via a rotating shaft, the gear 1 (13) is provided at the lower part of the outside of the adjusting shaft (12), and the left side of the gear 1 (13) is connected to the adjusting arm 1 (9). A gear 2 (14) is provided, a transmission shaft 1 (15) is passed through the middle of the gear 2 (14), the outside of the adjusting shaft (12) is connected to the transmission shaft 2 (17) through a transmission belt 1 (16), and the outside of the adjusting shaft (12) is connected to the transmission shaft 3 (19) through a transmission belt 2 (18), the outside of the transmission shaft 2 (17) is connected to a rotating rod (21) through a transmission belt 3 (20), and a gear 3 (22) is provided above the outside of the rotating rod (21), a gear 4 (23) is provided on the right side of the gear 3 (22), and a transmission shaft 4 (24) is passed through the middle of the gear 4 (23), the tops of the transmission shaft 1 (15), the transmission shaft 2 (17), the transmission shaft 3 (19) and the transmission shaft 4 (24) pass through the bottom of the valve frame (1) and are connected to blades (25), and an electrostatic eliminator (26) is installed above the inside of the valve frame (1).

2. A damper for preventing dust accumulation according to claim 1, characterized in that: The positive and negative threaded trapezoidal screw rod (3) and the adjusting shaft (12) are perpendicular to each other, and the end of the adjusting shaft (12) away from the rotating platform (11) passes through the support (2) and the valve frame (1) in sequence, and the adjusting shaft (12) and the valve frame (1) are rotatably connected.

3. The air valve for preventing dust accumulation according to claim 1, characterized in that: The connecting block 1 (7) and the connecting block 2 (8) are in a right-angle structure, and the adjusting arm 1 (9) and the adjusting arm 2 (10) are symmetrically distributed with respect to the positive and negative thread trapezoidal screw rod (3).

4. The air valve for preventing dust accumulation according to claim 1, characterized in that: The adjusting shaft (12), the second transmission shaft (17), the third transmission shaft (19) and the rotating rod (21) rotate in the same direction, and the rotating rod (21) and the valve frame (1) are rotationally connected.

5. The air valve for preventing dust accumulation according to claim 1, characterized in that: The transmission shaft one (15) and the transmission shaft four (24) rotate in the same direction, and the transmission shaft two (17) and the transmission shaft four (24) rotate in opposite directions.

6. The air valve for preventing dust accumulation according to claim 1, characterized in that: The blades (25) are provided with four blades, and the adjustment shaft (12), the transmission shaft one (15), the transmission shaft two (17), the transmission shaft three (19), the rotating rod (21) and the transmission shaft four (24) are parallel to each other.

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