CN210599433U

CN210599433U - Screw vacuum pump for pumping granular raw materials

Info

Publication number: CN210599433U
Application number: CN201921731645.7U
Authority: CN
Inventors: 支永英; 刘亚军; 杨斌国; 陈妍
Original assignee: Jiangxi Boya Seehot Pharmaceutical Co ltd
Current assignee: Jiangxi Boya Seehot Pharmaceutical Co ltd
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-05-22
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a screw vacuum pump for extracting granule raw materials, including the screw vacuum pump body, the bottom fixed mounting of screw vacuum pump body has the bottom to be the first mounting box that the opening set up, and the slip cap is equipped with the second mounting box that the top set up for the opening on the first mounting box, two first locating levers of fixed mounting on the bottom inner wall of second mounting box, and the slip cap is equipped with same movable plate on two first locating levers, a plurality of buffer spring of fixedly connected with between the top of movable plate and the bottom of first mounting box, has seted up the rectangular channel on the bottom inner wall of second mounting box. The utility model relates to a rationally, convenient operation is convenient for cushion the screw vacuum pump body, reaches and alleviates impact shock strength, and is convenient for adjust buffer spring's elasticity according to actual need, reaches balanced vibrations power and beat range, reduces the beat range when effectively alleviating the vibrations impact force, satisfies the user demand, is favorable to the use.

Description

Screw vacuum pump for pumping granular raw materials

Technical Field

The utility model relates to a screw vacuum pump technical field especially relates to a screw vacuum pump for extracting granule raw materials.

Background

The screw vacuum pump is an air extraction device which utilizes a pair of screws to perform synchronous high-speed reverse rotation in a pump shell to generate air suction and exhaust effects, is a renewal product of an oil seal type vacuum pump and can be used for extracting gas occasions containing a large amount of water vapor and a small amount of dust, and is widely applied to the fields of enterprises with higher requirements on clean vacuum, such as domestic pharmacy, chemical industry, semiconductors and the like.

However, most of the buffer springs at the bottom of the conventional screw vacuum pump are inconvenient to adjust the elasticity of the springs according to actual needs, if the elasticity of the springs is too small and soft, the up-and-down jumping amplitude is too large, so that the normal work is influenced, and if the elasticity of the adopted springs is too large and hard, the effect of effectively buffering and reducing the vibration impact force cannot be achieved, so that the use is influenced, the use requirement cannot be met, and therefore the screw vacuum pump for extracting the raw materials of the granules is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a screw vacuum pump for extracting raw materials of granules.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a screw vacuum pump for extracting granular raw materials comprises a screw vacuum pump body, wherein a first mounting box with an opening at the bottom is fixedly mounted at the bottom of the screw vacuum pump body, a second mounting box with an opening at the top is slidably sleeved on the first mounting box, two first positioning rods are fixedly mounted on the inner wall of the bottom of the second mounting box, a same moving plate is slidably sleeved on the two first positioning rods, a plurality of buffer springs are fixedly connected between the top of the moving plate and the bottom of the first mounting box, a rectangular groove is formed in the inner wall of the bottom of the second mounting box, screws are rotatably mounted on the inner walls of two sides of the rectangular groove, the screw thread directions of the two screws are opposite, one ends of the two screws, which are close to each other, are fixedly connected, a fixed block is fixedly mounted on the inner wall of the bottom of the rectangular groove, the fixed block is rotatably sleeved on the two screws, and a driving motor is fixed on, an output shaft of the driving motor extends into the rectangular groove and is fixedly connected with one end of one of the two screw rods far away from the other screw rod, a moving block is sleeved on the screw rod in a threaded manner, second positioning rods are fixedly mounted on two sides of the fixed block, the moving block is sleeved on the corresponding second positioning rods in a sliding manner, the top end of each first positioning rod extends into the first mounting box and is fixedly mounted with the mounting block, obliquely arranged first fixed pulleys are rotatably mounted on two sides of the top of the mounting block, the two first fixed pulleys on the same mounting block are symmetrically arranged, a second fixed pulley rotatably mounted on the side wall of the rectangular groove is arranged above the moving block, two pull ropes are fixedly mounted at the top of the moving plate, and one end of each pull rope, far away from the moving plate, sequentially bypasses the tops of the two corresponding first fixed pulleys and one side of the second fixed pulley, the moving plate is sleeved on the two pull ropes.

Preferably, one side of the moving block is provided with a threaded hole, and the threaded hole is in threaded connection with the corresponding screw.

Preferably, the inner walls of the two sides of the rectangular groove are fixedly provided with first bearings, and the inner rings of the first bearings are fixedly connected with the outer sides of the corresponding screw rods.

Preferably, a circular hole is formed in one side of the fixing block, a second bearing is fixedly sleeved in the circular hole, and the inner ring of the second bearing is fixedly sleeved with the outer sides of the two screws.

Preferably, the top of the moving plate is provided with two through holes, and the side walls of the through holes are in movable contact with the outer sides of the corresponding pull ropes.

Preferably, two rectangular holes are formed in the top of the moving plate, and the side walls of the rectangular holes are in sliding connection with the outer sides of the corresponding first positioning rods.

Preferably, the inner walls of the two sides of the second mounting box are provided with sliding grooves, the two sides of the first mounting box are fixedly provided with sliding blocks, and the sliding blocks are connected with the corresponding sliding grooves in a sliding mode.

Compared with the prior art, the beneficial effects of the utility model are that:

by matching the screw vacuum pump body, the first mounting box, the second mounting box, the first positioning rod, the moving plate, the buffer spring, the rectangular groove, the fixed block, the screw, the driving motor, the mounting block, the first fixed pulley, the moving block, the second fixed pulley and the pull rope with the second positioning rod, when the elastic force of the buffer spring needs to be adjusted, the driving motor is started in the forward direction to drive one screw fixedly connected with the driving motor to rotate, one screw drives the other screw to rotate, the screw rotates to drive the corresponding moving block to move, the two moving blocks simultaneously pull the moving plate to slide upwards on the two first positioning rods through the two pull ropes and compress the buffer spring, so that the buffer spring can be in a slightly compressed or semi-compressed state before buffering, the compression stroke of the buffer spring is shortened, and the damping elastic force of the buffer spring in the compressed state to the screw vacuum pump body is obviously increased, at the moment, the vibration amplitude of the screw vacuum pump body during vibration again becomes small, and the initial compression degree of the buffer spring can be adjusted according to actual needs, so that the elastic force of the buffer spring is adjusted.

The utility model relates to a rationally, convenient operation is convenient for cushion the screw vacuum pump body, reaches and alleviates impact shock strength, and is convenient for adjust buffer spring's elasticity according to actual need, reaches balanced vibrations power and beat range, reduces the beat range when effectively alleviating the vibrations impact force, satisfies the user demand, is favorable to the use.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a screw vacuum pump for extracting a granular raw material according to the present invention;

fig. 2 is a schematic structural diagram of a part a of a screw vacuum pump for extracting a granular raw material according to the present invention;

fig. 3 is a perspective view of the first positioning rod, the mounting block and the moving plate connecting member of fig. 2.

In the figure: the vacuum pump comprises a screw vacuum pump body 1, a first mounting box 2, a second mounting box 3, a first positioning rod 4, a moving plate 5, a buffer spring 6, a rectangular groove 7, a fixed block 8, a screw 9, a driving motor 10, a mounting block 11, a first fixed pulley 12, a moving block 13, a second fixed pulley 14, a pulling rope 15 and a second positioning rod 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a screw vacuum pump for extracting a granular raw material comprises a screw vacuum pump body 1, a first mounting box 2 with an opening at the bottom is fixedly mounted at the bottom of the screw vacuum pump body 1, a second mounting box 3 with an opening at the top is slidably sleeved on the first mounting box 2, two first positioning rods 4 are fixedly mounted on the inner wall of the bottom of the second mounting box 3, a same moving plate 5 is slidably sleeved on the two first positioning rods 4, a plurality of buffer springs 6 are fixedly connected between the top of the moving plate 5 and the bottom of the first mounting box 2, a rectangular groove 7 is formed in the inner wall of the bottom of the second mounting box 3, screws 9 are rotatably mounted on the inner walls of two sides of the rectangular groove 7, the screw threads of the two screws 9 are opposite in screwing direction, one ends of the two screws 9 close to each other are fixedly connected, a fixing block 8 is fixedly mounted on the inner wall of the bottom of the, the fixed block 8 is rotatably sleeved on the two screw rods 9, a driving motor 10 is fixed at the bottom of one side of the second mounting box 3 through threads, an output shaft of the driving motor 10 extends into the rectangular groove 7 and is fixedly connected with one end of one screw rod 9 of the two screw rods 9 far away from the other screw rod 9, a moving block 13 is sleeved on the screw rods 9 through threads, second positioning rods 16 are fixedly arranged at both sides of the fixed block 8, the moving block 13 is slidably sleeved on the corresponding second positioning rods 16, the top end of the first positioning rod 4 extends into the first mounting box 2 and is fixedly provided with a mounting block 11, obliquely arranged first fixed pulleys 12 are rotatably arranged at both sides of the top of the mounting block 11, the two first fixed pulleys 12 positioned on the same mounting block 11 are symmetrically arranged, a second fixed pulley 14 rotatably arranged on the side wall of the rectangular groove 7 is arranged above the moving block 13, and two pull ropes 15 are fixedly arranged at, stay cord 15 keeps away from the one end of movable plate 5 and walks around the top of two corresponding first fixed pulleys 12 in proper order and second fixed pulley 14 keep away from one side of fixed block 8 and with the top fixed connection of movable block 13, and movable plate 5 cover is established on two stay cords 15, the utility model relates to a rationally, convenient operation is convenient for cushion screw vacuum pump body 1, reaches and alleviates impact shock strength, and is convenient for adjust buffer spring 6's elasticity according to actual need, reaches balanced vibrations power and the range of beating, reduces the range of beating when effectively alleviating the shock impact force, satisfies the user demand, is favorable to using.

In the utility model, one side of the moving block 13 is provided with a threaded hole, the threaded hole is in threaded connection with the corresponding screw rod 9, the inner walls of two sides of the rectangular groove 7 are all fixedly provided with a first bearing, the inner ring of the first bearing is fixedly connected with the outer side of the corresponding screw rod 9, one side of the fixed block 8 is provided with a circular hole, the circular hole is fixedly sleeved with a second bearing, the inner ring of the second bearing is fixedly sleeved with the outer sides of the two screw rods 9, the top of the moving plate 5 is provided with two through holes, the side wall of the through hole is in movable contact with the outer side of the corresponding stay cord 15, the top of the moving plate 5 is provided with two rectangular holes, the side wall of the rectangular hole is in sliding connection with the outer side of the corresponding first locating rod 4, the inner walls of two sides of the second mounting box 3 are both provided with chutes, the two sides of, convenient operation is convenient for cushion screw vacuum pump body 1, reaches and alleviates impact shock strength, and is convenient for adjust buffer spring 6's elasticity according to actual need, reaches balanced vibrations power and the range of beating, reduces the range of beating when effectively alleviating the vibrations impact force, satisfies the user demand, is favorable to the use.

The working principle is as follows: when the screw vacuum pump is used, when the screw vacuum pump body 1 vibrates during working, the vibration force drives the screw vacuum pump body 1 to move downwards, the screw vacuum pump body 1 drives the first mounting box 2 to move downwards, the buffer spring 6 is compressed in the downward movement process of the first mounting box 2, the first mounting box 2 is buffered under the elastic force action of the buffer spring 6, so that the vibration impact force on the screw vacuum pump body 1 is relieved, when the elastic force of the buffer spring 6 needs to be adjusted, the driving motor 10 is started in the forward direction, the output shaft of the driving motor 10 drives one screw rod 9 fixedly connected with the driving motor to rotate, one screw rod 9 drives the other screw rod 9 to rotate, under the action of a threaded hole arranged on one side of the moving block 13, the screw rods 9 rotate to drive the corresponding moving blocks 13 to move, and the two moving blocks 13 move towards the directions close to each other, the moving block 13 moves and simultaneously drives the corresponding pull ropes 15 to sequentially slide on one side of the second fixed pulley 14 and the top of the first fixed pulley 12, the two pull ropes 15 simultaneously pull the moving plate 5 to slide upwards on the two first positioning rods 4, the buffer spring 6 is compressed in the process that the moving plate 5 moves upwards, so that the buffer spring 6 can be in a slightly compressed or semi-compressed state before buffering, the compression stroke is shortened, the damping elastic force of the buffer spring 6 in the compressed state to the screw vacuum pump body 1 is obviously increased, the vibration amplitude of the screw vacuum pump body 1 when the screw vacuum pump body operates again is reduced, the initial compression degree of the buffer spring 6 can be adjusted according to actual requirements, therefore, the elasticity of the buffer spring 6 is adjusted, the vibration force and the jumping amplitude are balanced, and the jumping amplitude is reduced while the vibration impact force is effectively relieved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A screw vacuum pump for extracting a granular raw material comprises a screw vacuum pump body (1) and is characterized in that a first installation box (2) with the bottom arranged for an opening is fixedly installed at the bottom of the screw vacuum pump body (1), a second installation box (3) with the top arranged for an opening is slidably sleeved on the first installation box (2), two first positioning rods (4) are fixedly installed on the inner wall of the bottom of the second installation box (3), a same moving plate (5) is slidably sleeved on the two first positioning rods (4), a plurality of buffer springs (6) are fixedly connected between the top of the moving plate (5) and the bottom of the first installation box (2), a rectangular groove (7) is formed in the inner wall of the bottom of the second installation box (3), screw rods (9) are rotatably installed on the inner walls of two sides of the rectangular groove (7), and the screw threads of the two screw rods (9) are opposite in rotating direction, one end of each screw (9) close to each other is fixedly connected, a fixed block (8) is fixedly arranged on the inner wall of the bottom of the rectangular groove (7), the fixed block (8) is rotatably sleeved on the two screws (9), a driving motor (10) is fixedly arranged at the bottom of one side of the second mounting box (3) in a threaded manner, an output shaft of the driving motor (10) extends into the rectangular groove (7) and is fixedly connected with one end of one screw (9) of the two screws (9) far away from the other screw (9), a movable block (13) is sleeved on the screw (9) in a threaded manner, second positioning rods (16) are fixedly arranged on two sides of the fixed block (8), the movable block (13) is slidably sleeved on the corresponding second positioning rods (16), the top end of the first positioning rod (4) extends into the first mounting box (2) and is fixedly provided with a mounting block (11), and first fixed pulleys (12) which are obliquely arranged are rotatably arranged on two sides of the top of the, two first fixed pulleys (12) on the same mounting block (11) are symmetrically arranged, a second fixed pulley (14) rotatably mounted on the side wall of the rectangular groove (7) is arranged above the moving block (13), two pull ropes (15) are fixedly mounted at the top of the moving plate (5), one end, far away from the moving plate (5), of each pull rope (15) sequentially bypasses the tops of the corresponding two first fixed pulleys (12) and one side, far away from the fixed block (8), of the second fixed pulley (14) and is fixedly connected with the top of the moving block (13), and the moving plate (5) is sleeved on the two pull ropes (15).

2. The screw vacuum pump for extracting granular materials of claim 1, characterized in that one side of the moving block (13) is provided with a threaded hole, and the threaded hole is in threaded connection with the corresponding screw (9).

3. A screw vacuum pump for extracting granular raw materials according to claim 1, characterized in that the inner walls of the two sides of the rectangular groove (7) are fixedly provided with first bearings, and the inner rings of the first bearings are fixedly connected with the outer sides of the corresponding screws (9).

4. The screw vacuum pump for extracting the raw materials of the granules as claimed in claim 1, wherein a circular hole is formed in one side of the fixing block (8), a second bearing is fixedly sleeved in the circular hole, and an inner ring of the second bearing is fixedly sleeved with the outer sides of the two screws (9).

5. The screw vacuum pump for extracting granular materials according to claim 1, wherein the top of the moving plate (5) is provided with two through holes, and the side walls of the through holes are movably contacted with the outer sides of the corresponding pull ropes (15).

6. A screw vacuum pump for extracting granular materials according to claim 1, characterized in that the top of the moving plate (5) is opened with two rectangular holes, the side walls of which are slidably connected with the outer sides of the corresponding first positioning rods (4).

7. The screw vacuum pump for extracting raw materials of granules according to claim 1, wherein the inner walls of the two sides of the second mounting box (3) are respectively provided with a sliding groove, the two sides of the first mounting box (2) are respectively fixedly provided with a sliding block, and the sliding blocks are slidably connected with the corresponding sliding grooves.