Roots blower power transmission mechanism

Abstract

The utility model relates to a Roots blower power transmission mechanism, and belongs to the field of Roots blowers, the Roots blower power transmission mechanism comprises a gear box, a first opening is formed in the side wall, close to a shell, of the gear box, two first sliding rails are symmetrically arranged at the positions, corresponding to the first opening, of the shell, two first sliding seats are arranged between the two first sliding rails, and two second gears are arranged in the gear box; rotating shafts of the two second gears are correspondingly and rotationally arranged on the two first sliding seats and extend out of the gear box, the rotating shafts of the two second gears extending out of the gear box are correspondingly connected with two third gears, the addendum circle diameter of the two third gears is smaller than that of the two second gears, and the two third gears are movably arranged on a support; by means of the scheme, the problems caused by gear abrasion can be solved on the premise that the gears are not replaced, on one hand, an original gear can be continuously used, cost is saved, on the other hand, transmission efficiency can be guaranteed, the precision of the Roots blower can be improved, and the service life of the Roots blower can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of Roots blowers, in particular to a power transmission mechanism of Roots blowers. Background Art

[0002] Roots blower is a positive displacement blower, a rotary compressor that compresses and transports gas by making relative motion of the rotor in the casing. The power of the rotor body of the Roots blower is currently mainly driven by a motor and gear transmission. The rotating shafts of the two gears are connected to the rotating shafts of the two rotors, thereby driving the two rotors to rotate and compress the gas. Therefore, during long-term use, gear wear is the most common type of gear failure in Roots blowers. Gear wear causes the distance between the two gears to increase, which not only reduces the power transmission efficiency, but also increases the transmission noise, and also reduces the accuracy of the Roots blower, resulting in a shortened life of the entire equipment. The current solution to the above problem is generally to replace the gears. Replacing the gears can indeed completely solve the above problems, but it will also increase the investment cost and cause waste of the original gears. Especially when the gears cannot be replaced in time, there is currently no effective way to improve the use of the gears. Utility Model Content

[0003] The existing Roots blower gears are generally solved by replacing the gears after being worn, but this will also increase the investment cost and cause the waste of the original gears. In particular, when the gears cannot be replaced in time, there is no method to effectively improve the use of the gears to solve or alleviate the above problems to a large extent. At least one aspect or one purpose of the present application can solve the above problems, and a Roots blower power transmission mechanism is designed, and the specific technical solution adopted is:

[0004] A power transmission mechanism of a Roots blower, the Roots blower comprises a shell and two rotor bodies, the rotating shafts of the two rotor bodies are rotatably arranged on the shell and one end of the rotating shafts extends out of the shell, the rotating shafts of the two rotor bodies are correspondingly connected to two first gears at the ends extending out of the shell, the transmission mechanism comprises a gear box, the gear box has a first opening on the side wall close to the shell, the shell is symmetrically provided with two first slide rails at the first opening, two first slide seats are arranged between the two first slide rails, two second gears are arranged in the gear box, the rotating shafts of the two second gears are correspondingly rotatably arranged on the two first slide seats and extend out of the gear box, the rotating shafts of the two second gears extending out of the gear box are correspondingly connected to two third gears, the tooth top circle diameters of the two third gears are smaller than the tooth top circle diameters of the two second gears, the two third gears are movably arranged on a support, and the two third gears are alternately meshed with the two first gears.

[0005] Preferably, the support is in the shape of a rectangular parallelepiped and has a second opening. Two second slide rails are symmetrically arranged at the second opening, two second slide seats are arranged between the two second slide rails, two second bearings are correspondingly arranged in the two second slide seats, and the rotating shafts of the two second gears pass through the second bearings to connect the two third gears.

[0006] Preferably, the first opening is rectangular, the two first slide rails are symmetrically arranged on the upper and lower surfaces of the first opening, the two first slide seats are correspondingly provided with two first bearings, and the rotating shafts of the two second gears correspondingly pass through the two first bearings and extend to the gear box.

[0007] Preferably, the side wall of the gear box corresponding to the first opening is symmetrically provided with two first locking mechanisms along the front-to-back direction, and the side wall of the gear box corresponding to the first opening is symmetrically provided with two first threaded holes along the front-to-back direction. Each first locking mechanism includes a first screw, and one end of the first screw is threaded through the first threaded hole and rotatably connected to the first slide seat.

[0008] Preferably, two second locking mechanisms are symmetrically provided at the front and rear of the support corresponding to the second opening, and two second threaded holes are symmetrically provided along the front and rear direction at the support corresponding to the second opening. Each second locking mechanism includes a second screw rod, and one end of the second screw rod is threaded through the second threaded hole and is rotatably connected to the second slide seat.

[0009] Preferably, the first screw rod is connected to a first handle at one end away from the first slide seat, and the second screw rod is connected to a second handle at one end away from the second slide seat.

[0010] The utility model can change the distance between the two meshing gears through the gear transmission mechanism. After long-term use, the meshing degree can be adjusted by changing the distance between the two meshing gears, thereby improving or solving the problems caused by gear wear without replacing the gears. On the one hand, the original gears can continue to be used, saving costs; on the other hand, the transmission efficiency can be guaranteed, the accuracy of the Roots blower can be improved, the service life can be guaranteed, and the transmission noise can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1-Figure 2 It is a three-dimensional diagram of the utility model;

[0012] Figure 3 It is a cross-sectional view of the utility model.

[0013] In the figure, 1, Roots blower, 101, shell, 102, rotor body, 2, first gear, 3, third gear, 4, support, 5, second locking mechanism, 501, second screw, 502, second handle, 6, gear box, 7, first locking mechanism, 701, first handle, 702, first screw, 8, base, 9, first opening, 10, first slide seat, 11, first bearing, 12, second opening, 13, second bearing, 14, second slide seat, 15, second slide rail, 16, second gear, 17, first slide rail. DETAILED DESCRIPTION

[0014] In order to clearly illustrate the technical features of the present invention, the present invention is described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0015] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] like Figure 1-3 As shown, a Roots blower power transmission mechanism, the Roots blower 1 includes a housing 101 and two rotor bodies 102, the two rotor bodies 102 are arranged in the housing 101, and the connection between the rotating shafts of the two rotor bodies 102 and the housing 101 is rotatably connected through bearings, one end of the two rotor bodies 102 is extended out of the housing 101, and two first gears 2 are correspondingly connected to the end extending out of the housing 101.

[0017] The transmission mechanism includes a gearbox 6. The gearbox 6 and the housing 101 can be arranged on a common base 8. The gearbox 6 has a first opening 9 on the side wall near the housing 101. The housing 101 is symmetrically provided with two first slide rails 17 corresponding to the first opening 9. Two first slide seats 10 are arranged between the two first slide rails 17. At the same time, the two first slide seats 10 are just located in the first opening 9. Two second gears 16 are arranged in the gearbox 6. The two second gears 16 are meshed, and one of the second gears 16 is a driving wheel, which is connected to the motor or the motor (the connection here is realized in an existing manner, that is, the rotating shaft can be directly connected to the motor, that is, after the position of the second gear 16 is determined, an opening is made on the gearbox on site, or a sprocket can be arranged on the rotating shaft, and the chain passes through the gearbox 6 to connect with the external sprocket and the motor, etc., which will not be described in detail in this application). The rotating shafts of the two second gears 16 are correspondingly arranged on the two first slide seats 10 and extend out of the gearbox 6. The rotating shafts of the two second gears 16 extending out of the gearbox 6 are correspondingly connected to the two first slide seats 10. Three gears 3, the two third gears 3 are movably arranged on a support 4 (the movable arrangement here includes forward and backward sliding and relative rotation), the two third gears 3 are alternately meshed with the two first gears 2, and the alternate meshing here refers to the alternate arrangement of the two third gears 3 and the two first gears 2, that is, to ensure that the two third gears 3 are located on the same side of the two first gears 2, case one: one of the third gears 3 is located at the rear side of one of the first gears 2, and the other third gear 3 is located at the rear side of the other first gear 2; case two: one of the third gears 3 is located at the front side of one of the first gears 2, and the other third gear 3 is located at the front side of the other first gear 2. The purpose of this arrangement is to ensure that the two second gears 16 can be adjusted in the same direction (on the basis of ensuring the meshing of the two second gears 16), thereby changing the distance between the third gear 3 and the first gear 2, and improving the meshing transmission efficiency of the third gear 3 and the first gear 2.

[0018] The tooth top circle diameter of the two third gears 3 is smaller than the tooth top circle diameter of the two second gears 16. In this way, when the two second gears 16 are in meshing state, the two third gears 3 will not mesh with each other and the distance between them is large, thereby providing space for the third gear 3 to mesh with the first gear 2.

[0019] Furthermore, the support 4 is in a rectangular parallelepiped shape, and has a second opening 12, which is through in the left-right direction. Two second slide rails 15 are symmetrically arranged at the second opening 12, and two second slide seats 14 are arranged between the two second slide rails 15. Two second bearings 13 are arranged in the two second slide seats 14, and the rotating shafts of the two second gears 16 pass through the second bearings 13 to connect the two third gears 3. Through the above structure, the two second gears 16 and the third gear 3 can be moved forward and backward while ensuring rotation. By moving the positions of the two second gears 16, not only can the relative distance between the two second gears 16 be changed, but also the problem of reduced transmission efficiency caused by the large gap caused by the meshing wear of the two second gears 16 can be improved, the transmission efficiency can be guaranteed, and the transmission noise can be reduced. In addition, moving the positions of the two second gears 16 can also drive the positions of the two third gears 3, thereby improving the problem of reduced transmission efficiency caused by the large gap caused by the meshing wear of the two third gears 3 and the two first gears 2, and ensuring the transmission efficiency.

[0020] Furthermore, the first opening 9 is rectangular, and two first slide rails 17 are symmetrically arranged on the upper and lower surfaces of the first opening 9. Two first slide seats 10 are correspondingly provided with two first bearings 11, and the rotating shafts of the two second gears 16 pass through the two first bearings 11 and extend to the gear box 6. The two second gears 16 can be rotated and moved at the same time by the above structure. At the same time, the above structure cooperates with the second slide seat 14 to support both ends of the rotating shaft of the second gear 16, and ensure the smooth movement of the third gear 3 and the second gear 16.

[0021] Furthermore, in order to fix the first slide 10 after the first slide 10 moves to a suitable position, two first locking mechanisms 7 are symmetrically provided along the front-to-back direction on the side wall of the gear box 6 corresponding to the first opening 9, and two first threaded holes are symmetrically provided along the front-to-back direction on the side wall of the gear box 6 corresponding to the first opening 9. Each first locking mechanism 7 includes a first screw rod 702, one end of the first screw rod 702 is threaded through the first threaded hole and rotatably connected to the first slide 10, and the positions of the two first slides 10 are changed by screwing the two first screw rods 702. This locking structure plays both an adjusting role and a locking role. At this time, the two second slides 14 may not be locked, and the connection relationship between the first screw rod 702 and the rotating shaft of the second gear 16 is used to fix the two second slides 14. Of course, the second slide 14 may also be fixed by other methods, for example, a hole (a bare hole or a threaded hole) may be drilled on the support 4 on site, and the second slide 14 may be fixed by a pin or a stud.

[0022] Furthermore, in order to improve the fixing effect of the second slide 14, two second locking mechanisms 5 are symmetrically arranged at the second opening 12 of the above-mentioned support 4, and two second threaded holes are symmetrically arranged along the front and rear directions at the second opening 12 of the support 4. Each second locking mechanism 5 includes a second screw 501, and one end of the second screw 501 is threaded through the second threaded hole and is rotatably connected to the second slide 14. This requires that when the first screw 702 is turned to adjust the position of the first slide 10, the second screw 501 needs to be turned at the same time to ensure that the third gear 3 and the second gear 16 move synchronously.

[0023] Furthermore, in order to facilitate the turning of the first screw 702 and the second screw 501, the first screw 702 is connected to a first handle 701 at one end away from the first slide 10, and the second screw 501 is connected to a second handle 502 at one end away from the second slide 14. The first handle 701 and the second handle 502 here are actually a cross bar, which is arranged perpendicular to the first screw 702 and the second screw 501. When turning the first screw 702 and the second screw 501, you can twist the first handle 701 and the second handle 502 with both hands.

[0024] The above-mentioned specific implementation manner cannot be used as a limitation on the protection scope of the present utility model. For those skilled in the art, any replacement, improvement or change made to the implementation manner of the present utility model falls within the protection scope of the present utility model.

[0025] The matters not described in detail in the present invention are all known technologies to those skilled in the art.

Claims

1. A power transmission mechanism of a Roots blower, the Roots blower comprising a housing and two rotor bodies, the rotating shafts of the two rotor bodies being rotatably arranged in the housing and one end extending out of the housing, characterized in that: The rotating shafts of the two rotor bodies are connected to two first gears at one end extending out of the shell, and the transmission mechanism includes a gear box. The gear box has a first opening on the side wall close to the shell, and the shell is symmetrically provided with two first slide rails corresponding to the first opening, and two first slide seats are provided between the two first slide rails. Two second gears are provided in the gear box, and the rotating shafts of the two second gears are correspondingly rotatably set on the two first slide seats and extend out of the gear box. The rotating shafts of the two second gears extending out of the gear box are connected to two third gears, and the tooth top circle diameters of the two third gears are smaller than the tooth top circle diameters of the two second gears. The two third gears are movably set on a support seat, and the two third gears are alternately meshed with the two first gears.

2. A Roots blower power transmission mechanism according to claim 1, characterized in that: The support is in the shape of a rectangular parallelepiped and has a second opening. Two second slide rails are symmetrically arranged at the second opening, two second slide seats are arranged between the two second slide rails, two second bearings are correspondingly arranged in the two second slide seats, and the rotating shafts of the two second gears pass through the second bearings to connect the two third gears.

3. A Roots blower power transmission mechanism according to claim 1 or 2, characterized in that: The first opening is rectangular, two first slide rails are symmetrically arranged on the upper and lower surfaces of the first opening, two first slide seats are correspondingly provided with two first bearings, and the rotating shafts of the two second gears pass through the two first bearings and extend to the gear box.

4. A Roots blower power transmission mechanism according to claim 2, characterized in that: The side wall of the gear box corresponding to the first opening is symmetrically provided with two first locking mechanisms along the front-to-back direction, and the side wall of the gear box corresponding to the first opening is symmetrically provided with two first threaded holes along the front-to-back direction. Each of the first locking mechanisms includes a first screw, and one end of the first screw is threaded through the first threaded hole and rotatably connected to the first slide seat.

5. A Roots blower power transmission mechanism according to claim 4, characterized in that: The support is symmetrically provided with two second locking mechanisms at the front and rear sides corresponding to the second opening, and the support is symmetrically provided with two second threaded holes along the front and rear directions corresponding to the second opening. Each of the second locking mechanisms includes a second screw rod, and one end of the second screw rod is threaded through the second threaded hole and is rotatably connected to the second slide seat.

6. A Roots blower power transmission mechanism according to claim 5, characterized in that: The first screw rod is connected to a first handle at one end away from the first slide seat, and the second screw rod is connected to a second handle at one end away from the second slide seat.

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