High-rotating-speed screw vacuum pump driven by synchronous belt

Abstract

The utility model relates to the technical field of screw vacuum pumps, and discloses a high-rotating-speed screw vacuum pump adopting synchronous belt transmission, which comprises a vacuum pump shell, an air inlet pipe and an exhaust pipe are arranged on the surface of the vacuum pump shell, and the inner space of the air inlet pipe and the inner space of the exhaust pipe are communicated with the inner space of the vacuum pump shell. The surfaces of a second screw and a first screw can be brushed and swept through brush strips in the operation process of the vacuum pump through the maintenance cleaning assembly A, dust is prevented from being accumulated on the surfaces of the first screw and the second screw, high-temperature damage to the vacuum pump caused by the dust is reduced, meanwhile, the dust brushed and swept by the brush strips can be accumulated in a dust collection groove, and the service life of the vacuum pump is prolonged. The two groups of access doors can rotate around the rotating shaft and are opened by pulling the push rod to move, at the moment, dust accumulated in the dust collection groove can be cleaned, the second screw and the first screw in the vacuum pump shell can be overhauled and cleaned, the first screw and the second screw do not need to be disassembled, and the use is relatively convenient; and the cleaning and overhauling efficiency is relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw vacuum pump technical field, concretely is a kind of high-speed screw vacuum pump of synchronous belt drive. BACKGROUND

[0002] Screw vacuum pump is the suction equipment of the suction and exhaust action produced by a pair of screw, in the pump shell, synchronous high-speed reverse rotation, it is the updated product of oil seal type vacuum pump, can be excluded in the gas field containing a large amount of water vapor and a small amount of dust, in domestic pharmaceutical, chemical, semiconductor and other enterprises fields of higher demand for clean vacuum are widely used.

[0003] Most of the existing screw vacuum pump currently usually uses integrally-formed pump body, so that it guarantees good sealing under the premise of guaranteeing structural strength, but the screw vacuum pump can suck the gas with dust in the use process, and the dust is easy to adhere to the inner surface of the screw and the pump shell, when the dust accumulates too much, it can cause friction between the screw and the screw or the screw and the pump shell, cause the vacuum pump to generate high temperature, in turn cause the vacuum pump rotor to be stuck, cause the vacuum pump to be damaged, and the integrally-formed pump body needs to be disassembled to be repaired and cleaned, it is relatively inconvenient to use, and the cleaning and repairing efficiency is relatively low, therefore we provide a kind of high-speed screw vacuum pump of synchronous belt drive to solve or improve the above problems. SUMMARY

[0004] In view of the deficiencies of prior art, the utility model provides a kind of high-speed screw vacuum pump of synchronous belt drive, solve the problems mentioned in the above background.

[0005] The utility model provides the following technical scheme: including vacuum pump pump shell, drive motor is installed on the side surface of vacuum pump pump shell by mounting bracket, mounting bracket is installed on the side surface of vacuum pump pump shell by bolt, first gear is fixed to the top end of drive motor output shaft, second gear is rotatably installed on the side surface of vacuum pump pump shell by pivot, synchronous belt is sleeved on the surface of first gear and second gear, synchronous belt is engaged with first gear and second gear, first screw is rotatably installed in the inside of vacuum pump pump shell by bearing, second screw is rotatably installed in the inside of vacuum pump pump shell by bearing, second screw is located on the side of first screw and second screw and first screw are engaged with each other, third gear is fixed to the surface of first screw near one end position, fourth gear is fixed to the surface of second screw near one end position, third gear and fourth gear are engaged, maintenance and cleaning assembly A is arranged at the bottom of vacuum pump pump shell.

[0006] Further, the maintenance and cleaning assembly A internally comprises a push rod inserted in the vacuum pump housing, the two ends of the push rod penetrating the surface of the vacuum pump housing, one end of which is fixed with a fixed plate, a spring is sleeved between the surface of the push rod and the fixed plate, the other end is fixed with a handle, and the plug plate fixed on one side of the surface of the push rod is fixed with a plurality of groups on the surface of the push rod, the maintenance door is rotatably installed on the bottom of the vacuum pump housing through the rotating shaft, and the maintenance door is symmetrically installed on the bottom of the vacuum pump housing.

[0007] Further, the maintenance and cleaning assembly A internally further comprises a dust collecting groove opened on the top of the maintenance door, a slot opened on the bottom of the maintenance door, a plurality of groups of slots opened on the bottom of the maintenance door, a sliding groove opened on one side of the dust collecting groove on the top of the maintenance door, and a brush strip slidably installed in the sliding groove.

[0008] Further, the third gear and the fourth gear are provided between the first screw rod and the second screw rod, and the rotating shafts of the first screw rod and the second screw rod penetrate the partition plate and are rotatably connected with the partition plate through bearings.

[0009] Further, one end of the rotating shaft of the second gear penetrates the inside of the vacuum pump housing and is fixed with one end of the rotating shaft of the second screw rod, and the surface of the vacuum pump housing is provided with an air inlet pipe and an air outlet pipe, and the internal space of the air inlet pipe and the air outlet pipe is communicated with the internal space of the vacuum pump housing.

[0010] Further, the surface of the push rod in the vacuum pump housing is provided with a limiting plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects: through the setting maintenance and cleaning assembly A, the surface of the second screw rod and the first screw rod can be brushed by the brush strip in contact with the second screw rod and the first screw rod during the operation of the vacuum pump, so that the problem of high temperature caused by friction between the first screw rod and the second screw rod or between the second screw rod and the first screw rod and the vacuum pump housing due to excessive dust accumulation is avoided, and the dust brushed by the brush strip can be accumulated in the dust collecting groove, so that the two maintenance doors can be rotated around the rotating shaft and opened by pulling the push rod, at this time, the dust accumulated in the dust collecting groove can be cleaned, and the second screw rod and the first screw rod in the vacuum pump housing can be maintained and cleaned without disassembling the first screw rod and the second screw rod, so that the use is convenient, and the cleaning and maintenance efficiency is relatively high. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a bottom view structural schematic diagram of the utility model;

[0014] Figure 3The utility model discloses a vacuum pump pump shell internal structure schematic diagram;

[0015] Figure 4 The utility model discloses overhaul cleaning component A structure schematic diagram;

[0016] Figure 5 The utility model discloses spring structure schematic diagram;

[0017] Figure 6 The utility model discloses overhaul door structure enlarged schematic diagram.

[0018] In the drawing: 1, vacuum pump pump shell, 2, drive motor, 3, first gear, 4, second gear, 5, synchronous belt, 6, first screw rod, 7, third gear, 8, fourth gear, 9, second screw rod, 10, push rod, 11, overhaul door, 12, brush strip, 13, dust collecting groove, 14, insert board, 15, insert groove, 16, spring. Specific implementation

[0019] Below, will combine the drawing in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is clearly and completely described, obviously, the described embodiment only is a part embodiment of the utility model, instead of all the embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skilled in the art obtains without making the creative labor under the premise belong to the range of the utility model protection.

[0020] Please refer to Figures 1-6The utility model provides a kind of vacuum pump, including vacuum pump pump shell 1, the surface of vacuum pump pump shell 1 is provided with air inlet pipe and exhaust pipe, the internal space of air inlet pipe and exhaust pipe is communicated with the internal space of vacuum pump pump shell 1, drive motor 2 is installed on the side surface of vacuum pump pump shell 1 by mounting bracket, mounting bracket is installed on the side surface of vacuum pump pump shell 1 by bolt, drive motor 2 can be removed from the side surface of vacuum pump pump shell 1 by removing bolt, it is convenient to maintain and replace drive motor 2, first gear 3 is fixed to the top end of output shaft of drive motor 2, drive motor 2 can drive the rotation of first gear 3 fixed to the top end of output shaft, second gear 4 is rotatably installed on the side surface of vacuum pump pump shell 1 by rotating shaft, synchronous belt 5 is sleeved on the surface of first gear 3 and second gear 4, synchronous belt 5 is engagedly connected with first gear 3 and second gear 4, when first gear 3 rotates, it will drive the rotation of engaged synchronous belt 5, when synchronous belt 5 rotates, it will drive the rotation of engaged second gear 4, first screw 6 is rotatably installed in the inside of vacuum pump pump shell 1 by bearing, second screw 9 is rotatably installed in the inside of vacuum pump pump shell 1 by bearing, second screw 9 is located on the side of first screw 6 and second screw 9 and first screw 6 are engaged with each other, the rotating shaft one end of second gear 4 passes through the inside of vacuum pump pump shell 1 and is fixed with the rotating shaft one end of second screw 9, when second gear 4 rotates, it will drive the rotation of rotating shaft one end fixed second screw 9, third gear 7 is fixed on the surface of first screw 6 close to one end, fourth gear 8 is fixed on the surface of second screw 9 close to one end, third gear 7 and fourth gear 8 are engagedly connected, when second screw 9 rotates, it will drive the rotation of fixed fourth gear 8, when fourth gear 8 rotates, it will drive the rotation of engaged third gear 7, when third gear 7 rotates, it will drive the rotation of fixed first screw 6, third gear 7, fourth gear 8 and first screw 6, second screw 9 between are provided with partition, the rotating shaft of first screw 6 and second screw 9 passes through partition and is rotatably connected with partition by bearing, partition can separate third gear 7 and fourth gear 8, avoid the dust inhaled when first screw 6 and second screw 9 work to enter the surface of third gear 7 and fourth gear 8, reduce the additional wear of third gear 7 and fourth gear 8 due to dust covering, overhaul cleaning component A is arranged at the bottom of vacuum pump pump shell 1.

[0021] The maintenance and cleaning assembly A comprises a push rod 10 inserted into the vacuum pump shell 1, both ends of the push rod 10 pass through the surface of the vacuum pump shell 1, one end of the push rod 10 is fixed with a fixed plate, a spring 16 is sleeved between the surface of the push rod 10 and the fixed plate, the other end of the push rod 10 is fixed with a handle, the handle can drive the push rod 10 to move and extrude the spring 16, so that the spring 16 generates elastic potential energy, when the handle is released, the push rod 10 will return to the original position under the action of the spring 16, the surface of the push rod 10 in the vacuum pump shell 1 is provided with a limiting plate, the limiting plate can limit the position of the push rod 10, so as to avoid the push rod 10 from being pulled out of the vacuum pump shell 1, the plug-in plate 14 is fixed on the surface of the push rod 10, the plug-in plate 14 is installed on the surface of the push rod 10, the maintenance door 11 is rotatably installed on the bottom of the vacuum pump shell 1, the maintenance door 11 is symmetrically installed on the bottom of the vacuum pump shell 1, the dust collecting groove 13 is arranged on the top of the maintenance door 11, the plug-in slot 15 is arranged on the bottom of the maintenance door 11, the plug-in slot 15 is arranged on the bottom of the maintenance door 11, the sliding groove is arranged on one side of the dust collecting groove 13 on the top of the maintenance door 11, the brush strip 12 is slidably installed in the sliding groove, when the top of the two maintenance doors 11 is in parallel state, the brush strip 12 is in contact with the surface of the second screw 9 and the first screw 6, and at this time, the plug-in plate 14 is located in the plug-in slot 15, when the handle is pulled to move the push rod 10, the plug-in plate 14 is separated from the plug-in slot 15, at this time, the two maintenance doors 11 are opened around the shaft by gravity, after the maintenance door 11 is opened, the brush strip 12 can be directly pulled out for cleaning or replacement, and the use is convenient.

[0022] The working principle is that when the vacuum pump is used, the driving motor 2 drives the first gear 3 to rotate, the first gear 3 drives the second gear 4 to rotate through the synchronous belt 5, the second gear 4 drives the second screw 9 to rotate when rotating, and the third gear 7 is driven to rotate through the fourth gear 8, so that the first screw 6 rotates, at this time, the brush strip 12 in contact with the second screw 9 and the first screw 6 can brush the surface of the second screw 9 and the first screw 6, so as to avoid the problem that when the dust accumulates too much, the first screw 6 and the second screw 9 or the second screw 9 and the first screw 6 and the vacuum pump shell 1 rub each other, causing high temperature and causing damage to the vacuum pump, and the dust brushed by the brush strip 12 is accumulated in the inside of the dust collecting groove 13, so that it is convenient to clean uniformly, and by pulling the push rod 10 to move, the two sets of maintenance doors 11 can be rotated around the rotating shaft and opened, at this time, the dust accumulated in the inside of the dust collecting groove 13 can be cleaned, the brush strip 12 can be pulled out from the surface of the maintenance door 11, and the brush strip 12 can be replaced or cleaned, and the second screw 9 and the first screw 6 in the vacuum pump shell 1 can be maintained and cleaned, without disassembling the first screw 6 and the second screw 9, the use is convenient, the cleaning and maintenance efficiency is relatively high, after cleaning, the push rod 10 is pulled to move and aligns with the position of the insertion slot 15, at this time, the two sets of maintenance doors 11 are rotated to the side close to the vacuum pump shell 1, the top of the two sets of maintenance doors 11 is parallel, the handle is loosened, the spring 16 drives the push rod 10 and the insertion plate 14 to move, the insertion plate 14 is inserted into the inside of the insertion slot 15, the position of the two sets of maintenance doors 11 is fixed, after the fixing is completed, the vacuum pump can be used continuously, the operation is simple, and manpower is relatively saved.

[0023] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-rotating-speed screw vacuum pump using synchronous belt drive, characterized by, The utility model provides a vacuum pump, including vacuum pump pump shell (1): drive motor (2) is installed to one side surface of vacuum pump pump shell (1) through mounting support, and mounting support is installed to one side surface of vacuum pump pump shell (1) through bolt, first gear (3) is fixed to the top end of drive motor (2) output shaft, second gear (4) is rotatably installed to one side surface of vacuum pump pump shell (1) through pivot, synchronous belt (5) is sleeved on the surface of first gear (3) and second gear (4), and synchronous belt (5) is connected with first gear (3) and second gear (4) meshingly; First screw rod (6) is rotatably installed in the inside of vacuum pump pump shell (1) through bearing; Second screw rod (9) is rotatably installed in the inside of vacuum pump pump shell (1) through bearing, and the second screw rod (9) is located on one side of the first screw rod (6) and is meshed with the first screw rod (6); Third gear (7) is fixed to the surface of the first screw rod (6) near one end; Fourth gear (8) is fixed to the surface of the second screw rod (9) near one end, and the third gear (7) is connected with the fourth gear (8) meshingly; Maintenance and cleaning assembly A is arranged at the bottom of the vacuum pump pump shell (1).

2. A high speed screw vacuum pump employing synchronous belt drive according to claim 1, characterized in that, The maintenance and cleaning assembly A comprises a push rod (10) inserted into the inside of the vacuum pump pump shell (1), both ends of the push rod (10) pass through the surface of the vacuum pump pump shell (1), one end of the push rod (10) is fixed with a fixed plate, a spring (16) is sleeved between the surface of the push rod (10) and the fixed plate, the other end of the push rod (10) is fixed with a handle, a plug plate (14) is fixed to one side surface of the bottom of the push rod (10), a plurality of groups of the plug plate (14) are fixed to the surface of the push rod (10), a maintenance door (11) is rotatably installed at the bottom of the vacuum pump pump shell (1) through a pivot, and two groups of the maintenance door (11) are symmetrically installed at the bottom of the vacuum pump pump shell (1).

3. A high speed screw vacuum pump employing synchronous belt drive according to claim 2, characterized in that, The maintenance and cleaning assembly A further comprises a dust collecting groove (13) formed at the top of the maintenance door (11) and a plug groove (15) formed at the bottom of the maintenance door (11), a plurality of groups of the plug groove (15) are formed at the bottom of the maintenance door (11), and a sliding groove is formed at one side of the dust collecting groove (13) at the top of the maintenance door (11), and a brush strip (12) is slidably installed in the sliding groove.

4. A high speed screw vacuum pump employing synchronous belt drive according to claim 1, characterized in that, The third gear (7) and the fourth gear (8) are provided between the first screw rod (6) and the second screw rod (9), and the pivots of the first screw rod (6) and the second screw rod (9) pass through the partition plate and are rotatably connected with the partition plate through bearings.

5. A high speed screw vacuum pump employing synchronous belt drive according to claim 1, characterized in that, One end of the pivot of the second gear (4) passes through the inside of the vacuum pump pump shell (1) and is fixed with one end of the pivot of the second screw rod (9), the surface of the vacuum pump pump shell (1) is provided with an air inlet pipe and an air outlet pipe, and the internal space of the air inlet pipe and the air outlet pipe is communicated with the internal space of the vacuum pump pump shell (1).

6. A high speed screw vacuum pump employing synchronous belt drive according to claim 2, characterized in that, The surface of the push rod (10) in the inside of the vacuum pump pump shell (1) is provided with a limiting plate.

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