CN209019926U - A kind of Rotary Evaporators deceleration device - Google Patents

Abstract

The utility model discloses a kind of Rotary Evaporators deceleration devices, comprising: deceleration box, rotatable revolving body, helical gear, worm screw and DC brushless motor；The rotatable revolving body is arranged in the deceleration box, and the helical gear fixation is set on the rotatable revolving body, and helical gear rotation drives rotatable revolving body rotation；Bearing is fixedly mounted in position on the rotatable revolving body close to the helical gear both ends respectively, and it is mobile that two bearings limit the helical gear；The worm screw is located in the deceleration box and with the helical gear at right angle engaged transmission, the output shaft of the DC brushless motor stretches to inside deceleration box across the deceleration box to be fixedly connected with the worm screw, and DC brushless motor rotation drives worm screw to rotate synchronously.By the above-mentioned means, the utility model can reduce whole structure size, guarantee to run smoothly, reduces operating noise, prolong the service life, and the contact ratio of its deceleration transmission is big.

Description

A kind of Rotary Evaporators deceleration device

Technical field

The utility model relates to Rotary Evaporators fields, more particularly to a kind of Rotary Evaporators deceleration device.

Background technique

Rotary Evaporators series of products are to go in for the study and basic operation unit essential in production process.It is existing Rotary Evaporators are to drive rotary film evaporative flask using mechanical deceleration device, which is entire Rotary Evaporators Crucial main component has the characteristics that disengagement area is big, evaporation efficiency is high, easy to use and operate.Wherein, mechanical deceleration device is wanted Ask: compact-sized, function admirable, stable drive, operate reliably, low noise, greasy property are good, long service life.However it is traditional Mechanical deceleration device there is following disadvantages:

1, induction alternating current (AC) motor formula DC electromotor with brush is generallyd use, structure size is bigger than normal, and control is tired with maintenance Difficulty, noise and pollution are big etc..

2, it generallys use conventional worm gear and worm speed-down is driven, contact ratio is small, and transmission abrasion is big, manufactures assembly difficulty Deng.

3, metal casting moulding deceleration box, material and rough surface are generallyd use, loose, manufacture is complicated, low precision etc..

Therefore, it is necessary to design a kind of Rotary Evaporators deceleration device for being able to solve above-mentioned technical problem.

Utility model content

The utility model can reduce entirety mainly solving the technical problems that provide a kind of Rotary Evaporators deceleration device Structure size, guarantee to run smoothly, reduce operating noise, prolong the service life；And the contact ratio of its deceleration transmission is big.

In order to solve the above technical problems, the technical solution that the utility model uses is: providing a kind of Rotary Evaporators Deceleration device, comprising: deceleration box, rotatable revolving body, helical gear, worm screw and DC brushless motor；It is described rotatable Revolving body is arranged in the deceleration box, and the helical gear fixation is set on the rotatable revolving body, helical teeth rotation It is dynamic to drive rotatable revolving body rotation；Position on the rotatable revolving body close to the helical gear both ends is fixed respectively Bearing is installed, it is mobile that two bearings limit the helical gear；The worm screw be located in the deceleration box and with the helical gear At right angle engaged transmission, the output shaft of the DC brushless motor pass through the deceleration box stretch to inside deceleration box with it is described Worm screw is fixedly connected, and DC brushless motor rotation drives worm screw to rotate synchronously.

Preferably, the rotatable revolving body includes rotary shaft, the spring clamp body being set in the rotary shaft, is arranged In the spring body on the spring clamp body, the pine that is set in the rotary shaft and is connect with the spring body nose threads Tight nut.

Preferably, a circle groove is provided on the lateral wall of the rotary shaft；The lateral wall of the spring clamp body is equipped with one The step concordant with its forward end is enclosed, the inner sidewall of spring clamp body is equipped with the boss that a circle matches with the groove；Institute Multiple bar shaped grooves are distributed in the front end for stating spring clamp body, and the distance of spring clamp body front end to bar shaped groove slot bottom is greater than spring clip Distance of the body front end to boss；The front end of the spring body is against on the step.

Preferably, the helical gear and two bearings are set on the spring body；The bearing is rolling bearing.

Preferably, the worm screw is made of copper material；The helical teeth is made of enhancing nylon.

Preferably, the deceleration box is aluminium die-casting molding.

The beneficial effects of the utility model are: the utility model can reduce whole structure size, guarantee to run smoothly, Operating noise is reduced, is prolonged the service life；The contact ratio of its deceleration transmission is big, can also have processing with self-lubricating, pollution-free It is easy to make, combines the features such as installation accuracy is high.

Detailed description of the invention

Fig. 1 is a kind of schematic cross-sectional view of one preferred embodiment of Rotary Evaporators deceleration device of the utility model；

Fig. 2 is the sectional structure signal of rotatable revolving body in a kind of Rotary Evaporators deceleration device of the utility model Figure.

The components in the drawings are labeled as follows: 1, deceleration box；2, rotatable revolving body；21, rotary shaft；22, spring Clamp；23, spring body；24, tightening nut；25, step；26, bar shaped groove；3, helical gear；4, rolling bearing；5, worm screw； 6, DC brushless motor；7, the output shaft of DC brushless motor.

Specific embodiment

The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear Define.

Fig. 1 and Fig. 2 are please referred to, the utility model embodiment includes:

A kind of Rotary Evaporators deceleration device, comprising: deceleration box 1, rotatable revolving body 2, helical gear 3,5 and of worm screw DC brushless motor 6；The rotatable revolving body 2, helical gear 3 and worm screw 5 are respectively positioned in the deceleration box 1；It is described can The revolving body 2 of rotation is arranged in the deceleration box 1；The deceleration box 1 is aluminium die-casting molding, has overall material tight It is close, any surface finish, rational technology, cost reduce the features such as.The fixation of helical gear 3 is set in the rotatable revolving body 2 On, the rotation of helical gear 3 drives rotatable revolving body 2 to rotate；Close to 3 liang of the helical gear on the rotatable revolving body 2 Bearing is fixedly mounted in the position at end respectively, and it is mobile that two bearings limit the helical gear 3；The worm screw 5 is located at the reduction gearbox At right angle engaged transmission in body 1 and with the helical gear 3；The worm screw 5 is made of copper material；The helical teeth is using enhancing nylon It is made.The features such as worm screw 5 has contact ratio big with helical gear 3 at right angle engaged transmission, stable drive, self-lubricating, low noise. The output shaft 7 of the DC brushless motor passes through the deceleration box 1 and stretches to 1 inside of deceleration box and the fixed company of the worm screw 5 It connects, the rotation of DC brushless motor 6 drives worm screw 5 to rotate synchronously, and finally realizes the underdrive of rotatable revolving body 2.Direct current Brushless motor 6 has the features such as compact-sized, function admirable, movement is steady, and low-voltage is noiseless, long service life.

The rotatable revolving body 2 includes rotary shaft 21, the spring clamp body 22 being set in the rotary shaft 21, is arranged On the spring clamp body 22 spring body 23, be set in the rotary shaft 21 and with 23 nose threads of spring body The tightening nut 24 of connection.A circle groove is provided on the lateral wall of the rotary shaft 21, in order to fixed spring clamp 22；It is described The lateral wall of spring clamp body 22 is equipped with the circle step 25 concordant with its forward end, and the inner sidewall of spring clamp body 22 is equipped with The boss that one circle matches with the groove；Multiple bar shaped grooves 26, spring clamp body is distributed in the front end of the spring clamp body 22 The distance of 22 front ends to 26 slot bottom of bar shaped groove is greater than 22 front end of spring clamp body to the distance of boss；It can be better convenient for boss It is fastened in groove, improves connection elasticity, be convenient to mount and dismount, avoid damaging spring clamp body 22 or rotary shaft 21 in assembling and dissembling process.Institute The front end for stating spring body 23 is against on the step 25, in order to the positioning of spring body 23.The helical gear 3 and two axis It holds and is set on the spring body 23；The Selection of Bearings rolling bearing 4, transmission efficiency are high.

The utility model can reduce whole structure size, guarantee to run smoothly, and reduce operating noise, extend and use the longevity Life；The contact ratio of its deceleration transmission is big, can also have processing and fabricating to be easy with self-lubricating, pollution-free, combination installation accuracy it is high The features such as.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are also included in the patent protection scope of the utility model.

Claims (6)

1. a kind of Rotary Evaporators deceleration device characterized by comprising deceleration box, rotatable revolving body, helical gear, Worm screw and DC brushless motor；The rotatable revolving body is arranged in the deceleration box, and the helical gear fixation is arranged On the rotatable revolving body, helical gear rotation drives rotatable revolving body rotation；On the rotatable revolving body Bearing is fixedly mounted respectively close to the position at the helical gear both ends, it is mobile that two bearings limit the helical gear；The worm screw At right angle engaged transmission in the deceleration box and with the helical gear, the output shaft of the DC brushless motor passes through institute It states deceleration box and stretches to inside deceleration box and be fixedly connected with the worm screw, DC brushless motor rotation drives synchronous turn of worm screw It is dynamic.

2. a kind of Rotary Evaporators deceleration device according to claim 1, it is characterised in that: the rotatable revolving body Including rotary shaft, the spring clamp body being set in the rotary shaft, the spring body being set on the spring clamp body, it is set in The tightening nut being connect in the rotary shaft and with the spring body nose threads.

3. a kind of Rotary Evaporators deceleration device according to claim 2, it is characterised in that: the lateral wall of the rotary shaft On be provided with a circle groove；The lateral wall of the spring clamp body is equipped with the circle step concordant with its forward end, spring clamp body Inner sidewall be equipped with the boss that a circle matches with the groove；It is logical that multiple bar shapeds are distributed in the front end of the spring clamp body Slot, the distance of spring clamp body front end to bar shaped groove slot bottom are greater than spring clamp body front end to the distance of boss；The spring body Front end be against on the step.

4. a kind of Rotary Evaporators deceleration device according to claim 2 or 3, it is characterised in that: the helical gear and two A bearing is set on the spring body；The bearing is rolling bearing.

5. a kind of Rotary Evaporators deceleration device according to claim 1, it is characterised in that: the worm screw uses copper material system At；The helical teeth is made of enhancing nylon.

6. a kind of Rotary Evaporators deceleration device according to claim 1 or 5, it is characterised in that: the deceleration box is Aluminium die-casting molding.