CN215916495U

CN215916495U - Locking and bottle retreating device for rotary evaporator

Info

Publication number: CN215916495U
Application number: CN202122317280.7U
Authority: CN
Inventors: 严丹红; 李文波
Original assignee: Suzhou Beikai Biochemical Equipment Co ltd
Current assignee: Suzhou Beikai Biochemical Equipment Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-01
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a locking and bottle withdrawing device for a rotary evaporator, which comprises: glass sleeve pipe, a set of semicircle double thread ring, silica gel friction circle, thread fixing ring, move back bottle nut and screw thread anticreep ring, the glass sleeve pipe outside is located relatively to semicircle double thread ring, and the silica gel friction circle is located glass sleeve pipe's neck, and the outside of semicircle double thread ring is located to the thread fixing ring, and the glass sleeve pipe is located to the screw thread anticreep ring, moves back the bottle nut and locates the outside of semicircle double thread ring, thread fixing ring and screw thread anticreep ring, and it is connected with semicircle double thread ring and screw thread anticreep ring simultaneously, semicircle double thread ring and glass sleeve pipe phase-match. The utility model has simple structure, reasonable design and easy processing, effectively improves the stress condition of the rotating mechanism of the instrument and reduces the maintenance of the instrument to a certain extent; compared with the prior common clips, steel wire-bottle nut withdrawing devices, high-end variable-diameter bottle nut withdrawing devices and the like, the operation of the device is simple, and the working efficiency of workers is effectively improved.

Description

Locking and bottle retreating device for rotary evaporator

Technical Field

The utility model belongs to the technical field of biochemical instruments, and particularly relates to a locking and bottle retreating device for a rotary evaporator.

Background

The rotary evaporator is used for separating solid-liquid mixtures, is an indispensable instrument in the fields of chemical industry, biology and medicine, and can greatly improve the evaporation efficiency compared with a common distillation device. The reasons for the improved efficiency are: the rotary bottle (the glass flask containing the solution to be evaporated) rotates ceaselessly in the heating process, and the solution is attached to the inner wall of the rotary bottle, so that the effective evaporation area of the solution is enlarged; therefore, one of the core problems of the instrument is how to fix the rotary bottle on the rotary mechanism and drive it to move constantly.

The existing instrument has the following solution: the motor can conveniently drive a section of metal sleeve to rotate, but because the corrosion resistance of the metal pipe is not good enough, the rotating bottle is not suitable to be directly installed on the metal sleeve, a glass sleeve is sleeved in the metal pipe in advance, and then the rotating bottle is installed on a ground opening at the lower end of the glass pipe; the fixing mode of the glass tube and the metal tube is simple, namely an expansion tube is arranged between the two tubes, and tapered opening annular plastic parts can be respectively arranged at the two ends of the metal tube and are locked by nuts at the two ends of the metal tube.

After the ground part of the rotary bottle is sleeved with the ground part at the lower end of the glass sleeve, if the rotary bottle is infirm by only vacuum absorption in a system, the rotary bottle is easy to fall off under the condition of power failure or poor system air tightness.

Therefore, the same european products are designed by the same race lead enterprise to integrate the clip and the rotating mechanism, such as the product of the swiss-brooch company and the german dolphin company (see patent DE102009006819a 1): the external thread is additionally arranged on the nut for fastening the glass sleeve at the lower end of the metal sleeve, the nut is screwed on the thread, the nut is also called as a bottle-withdrawing nut, the bottle-withdrawing nut has two functions, one of the two functions is used as a carrier of the clamp, and after the clamp clamps the main rotating bottle, the bottle-withdrawing nut is screwed, so that the clamp can pull the rotating bottle; the other function of the rotary bottle is that when the rotary bottle is locked with the glass sleeve, the rotary bottle can be ejected out easily by loosening the nut; because the plastic clip is made hard and is difficult to be clamped into the bottleneck of the rotary bottle, and the tensioning force is reduced if the plastic clip is made soft, a combined clip of a thick steel wire and a plastic nut is designed later, and the combined clip is shown in the patent (CN 103826713A), and mainstream products in European and American markets of nearly twenty years are all in the structure. Unfortunately, when a domestic manufacturer imitates the structure, the steel wire and the nut are processed roughly and are not firmly fixed, and even become a dummy.

On the basis of a steel wire-nut combined clamp, German Haidaofu company further develops a clamp (US 2017113159A 1) with an opening size capable of being freely adjusted, according to the utility model patent, the novel clamp is designed to be very exquisite, the caliber of a port connected with a rotary bottle can be correspondingly finely adjusted according to different sizes of bottle mouths of various manufacturers for producing the rotary bottles, the adjusting process is very simple, the clamp can be completed by only sliding a button on the clamp, the error correction capability is strong, and the clamp is convenient to operate. Considering that the ground mouth processing of the glass instrument in China has national standard, the sizes of the bottle mouths of glass flasks fired by various manufacturers are not greatly different, and the error correction capability shows slightly 'excess quality'.

According to the above description of the fixing mode of the rotary bottle, it can be seen that no matter the rotary bottle is a steel wire-plastic nut combined clamp or a high-end clamp with a variable inner diameter, the clamp body is screwed on the rotary mechanism, namely a metal sleeve rather than a glass sleeve, when the rotary bottle is fixed, an axial force is generated between the glass sleeve and the metal sleeve, and when the rotary bottle is withdrawn, an axial force opposite to the axial force is generated between the glass sleeve and the metal sleeve; considering that the purpose of using the bottle-withdrawing nut and the clip is only for fixing and separating the rotating bottle and the glass sleeve, the two axial forces are unnecessary and harmful, and even cause the position between the glass sleeve and the metal sleeve to change after frequent use, and once sliding, the calibration needs to be performed by professional personnel, which causes unnecessary troubles.

In summary, the existing bottle locking and withdrawing technology of the rotary evaporator is still to be improved.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the defects, the utility model aims to provide a locking and bottle withdrawing device for a rotary evaporator, which has the advantages of simple structure, reasonable design and easy processing, can effectively improve the stress condition of an instrument rotating mechanism, reduces the maintenance of the instrument to a certain extent, and has simpler operation than the conventional devices such as a common clamp, a steel wire-bottle withdrawing nut, a high-end reducing bottle withdrawing nut and the like, thereby effectively improving the working efficiency of workers.

The technical scheme is as follows: in order to achieve the above object, the present invention provides a locking and bottle-withdrawing device for a rotary evaporator, comprising: glass sleeve pipe, a set of semicircle double thread ring, silica gel friction circle, screw thread retainer plate, move back bottle nut and screw thread anticreep ring, the glass sleeve pipe outside is located relatively to semicircle double thread ring, glass sleeve pipe's neck is located to silica gel friction circle, the outside of semicircle double thread ring is located to the screw thread retainer plate, the screw thread anticreep ring is located on the glass sleeve pipe, move back the outside that semicircle double thread ring, screw thread retainer plate and screw thread anticreep ring are located to bottle nut, and it is connected with semicircle double thread ring and screw thread anticreep ring simultaneously, semicircle double thread ring and glass sleeve pipe phase-match. The locking and bottle withdrawing device for the rotary evaporator has the advantages of simple structure, reasonable design and easiness in processing, and can effectively improve the stress condition of an instrument rotating mechanism, reduce the maintenance of the instrument to a certain extent.

The semicircular double-thread ring is in a ladder shape and comprises a first thread section, a second thread section and a third connecting section, the second thread section is arranged between the first thread section and the third connecting section, two ends of the cross section of the second thread section are respectively provided with a positioning block and a positioning groove, and the connecting part between the two semicircular double-thread rings is connected with the positioning groove in a buckling mode through the positioning block and the positioning groove. Semicircle double thread ring adopts unique structural design, lets it can cooperate with silica gel friction circle, thread tightening circle and retreat bottle nut simultaneously, has optimized its structure, improves the stability of connecting.

Furthermore, a groove sawtooth groove is formed in the inner wall of the second thread section and matched with the silica gel friction ring. The design of slot sawtooth groove lets its better cooperation with silica gel friction circle, has optimized the structure of whole device.

Preferably, the second thread segments are tapered. The design of toper lets its along with the twist of screw thread retainer plate, and silica gel friction circle and glass sleeve pipe can be held more and more tightly to two semicircle double thread rings to play the effect of locking the bottle.

Furthermore, move back the bottle nut and include moving back the bottle nut body, it is equipped with first internal thread and second internal thread on the inner wall of bottle nut body to move back, just it is equipped with a set of claw to move back the tip of bottle nut body. The design of first internal thread and second internal thread lets it be connected with semicircle double thread ring and screw thread anticreep ring simultaneously, carries out further optimization to this locking and moves back the structure of bottle device.

Furthermore, the thread anti-drop ring comprises a ring, a baffle ring is arranged at one end of the ring, a first external thread is arranged on one side of the baffle ring, and a first internal thread and the first external thread on the bottle-withdrawing nut body are in threaded connection.

Furthermore, a second external thread is arranged on the first thread section, and a second internal thread on the inner wall of the bottle withdrawing nut body is in threaded connection with the second external thread.

In addition, still include rotatory bottle, the head of glass sleeve pipe is located to rotatory bottle one end, and the inner wall of its tip presses in the tip of semicircle double thread ring, and the outside card is in the claw.

The technical scheme shows that the utility model has the following beneficial effects:

1. the locking and bottle withdrawing device for the rotary evaporator has the advantages of simple structure, reasonable design and easiness in processing, and can effectively improve the stress condition of an instrument rotating mechanism, reduce the maintenance of the instrument to a certain extent.

2. The semicircular double-thread ring adopts a unique structural design, can be matched with the silica gel friction ring, the thread fixing ring and the bottle withdrawing nut at the same time, optimizes the structure and improves the connection stability.

3. In the utility model, the second thread section is conical. The design of toper lets its along with the twist of screw thread retainer plate, and silica gel friction circle and glass sleeve pipe can be held more and more tightly to two semicircle double thread rings to play the effect of locking the bottle.

Drawings

FIG. 1 is a schematic structural view of a bottle locking and withdrawing device for a rotary evaporator according to the present invention;

FIG. 2 is an exploded view of a locking and bottle-withdrawing device for a rotary evaporator according to the present invention;

FIG. 3 is a schematic structural view of a semi-circular double-threaded ring according to the present invention;

FIG. 4 is a sectional view of the bottle-withdrawing nut of the present invention;

FIG. 5 is a schematic structural view of a rotary evaporator with a locking and bottle-withdrawing device for locking a rotary bottle;

FIG. 6 is an exploded view of the locking and bottle-withdrawing device and the rotary bottle for the rotary evaporator of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1

A locking and bottle-withdrawing device for a rotary evaporator as shown in fig. 1 to 4, comprising: the glass sleeve comprises a glass sleeve 1, a group of semicircular double-thread rings 2, a silica gel friction ring 3, a thread fixing ring 4, a bottle withdrawing nut 5 and a thread anti-falling ring 6, wherein the semicircular double-thread rings 2 are in a step shape and comprise a first thread section 21, a second thread section 22 and a third connecting section 23, the second thread section 22 is arranged between the first thread section 21 and the third connecting section 23, two ends of the cross section of the second thread section 22 are respectively provided with a positioning block 24 and a positioning groove 25, the semicircular double-thread rings 2 are arranged on the outer side of the glass sleeve 1, and the connecting parts between the semicircular double-thread rings 2 are connected in a buckling mode through the positioning block 24 and the positioning groove 25;

glass sleeve 1's neck is located to silica gel friction circle 3, semicircle double thread ring 2's outside is located to screw thread retainer plate 4, glass sleeve 1 is located to screw thread anticreep ring 6, it locates the outside of semicircle double thread ring 2, screw thread retainer plate 4 and screw thread anticreep ring 6 to move back bottle nut 5, and its is connected with semicircle double thread ring 2 and screw thread anticreep ring 6 simultaneously, semicircle double thread ring 2 and glass sleeve 1 phase-match.

In this embodiment, a groove sawtooth groove 26 is formed in the inner wall of the second thread section 22, and the groove sawtooth groove 26 is matched with the silica gel friction ring 3.

The second thread segments 22 in this embodiment are tapered.

The bottle nut 5 in this embodiment includes a bottle nut body 51, a first internal thread 52 and a second internal thread 53 are provided on an inner wall of the bottle nut body 51, and a set of claws 54 is provided at an end of the bottle nut body 51.

In this embodiment, the thread anti-drop ring 6 includes a ring, one end of the ring is provided with a retaining ring 61, one side of the retaining ring 61 is provided with a first external thread 62, and the first internal thread 52 on the bottle-withdrawing nut body 51 is in threaded connection with the first external thread 62.

In this embodiment, the first thread section 21 is provided with a second external thread, and the second internal thread 53 on the inner wall of the bottle-withdrawing nut body 51 is in threaded connection with the second external thread.

Example 2

the silica gel friction ring 3 is arranged at the neck of the glass sleeve 1, the thread fixing ring 4 is arranged on the outer side of the semicircular double-thread ring 2, the thread anti-falling ring 6 is arranged on the glass sleeve 1, the bottle returning nut 5 is arranged on the outer sides of the semicircular double-thread ring 2, the thread fixing ring 4 and the thread anti-falling ring 6 and is simultaneously connected with the semicircular double-thread ring 2 and the thread anti-falling ring 6, and the semicircular double-thread ring 2 is matched with the glass sleeve 1;

the glass sleeve is characterized by further comprising a rotary bottle 7, one end of the rotary bottle 7 is arranged at the head of the glass sleeve 1, the inner wall of the end portion of the rotary bottle 7 is pressed at the end portion of the semicircular double-thread ring 2, and the outer portion of the rotary bottle is clamped in the claw 54.

The second thread segments 22 in this embodiment are tapered.

In this embodiment, the locking and bottle-withdrawing device for the rotary evaporator is installed in the following manner: the upper end of the glass sleeve 1 is fixed on a rotating mechanism of a rotary evaporator, the silica gel friction ring 3 is arranged at the thin neck of a ground port at the lower end of the glass sleeve 1, two semicircular double-thread rings 2 are buckled outside the glass sleeve through corresponding positioning blocks 24 and positioning grooves 25 (as shown in figure 3), a groove sawtooth groove 26 is formed in each semicircular double-thread ring 2 and is matched with the silica gel friction ring 3, then the thread fixing ring 4 is screwed on a smaller second thread section 22 (as shown in figure 3) of two groups of threads formed after the combination of the two semicircular double-thread rings 2, the threads have conicity, and the two semicircular double-thread rings 2 can hold the silica gel friction ring 3 and the glass sleeve 1 more and more tightly along with the screwing of the thread fixing ring 4; then the bottle-withdrawing nut 5 and the thread anti-drop ring 6 are respectively sleeved in from the upper end and the lower end of the glass sleeve 1, the upper end of the bottle-withdrawing nut 5 is provided with a first internal thread 52 (shown in figure 4) which is screwed with the thread anti-drop ring 6 to complete the assembly, and the assembled structure is shown in figure 1.

The working principle of the locking and bottle withdrawing device for the rotary evaporator in the embodiment is as follows: the installation method of the rotary bottle 7 comprises the following steps: the bottle withdrawing nut 5 naturally slides to the lowest point along the glass sleeve 1, two claws 54 (shown in figure 4) on the bottle withdrawing nut 5 protrude out of the lower end face of the glass sleeve 1, an operator holds the rotary bottle 7 by hands to slightly push the bottle neck part from the side faces of the claws 54, the rotary bottle is slightly pushed along the axial direction of the glass sleeve 1 after alignment, a second internal thread 53 (shown in figure 4) inside the bottle withdrawing nut 5 is contacted with a first thread section 21 (shown in figure 3) on the outer side of the semicircular double-thread ring 2 at the moment, and the operator can firmly install the rotary bottle 7 on the glass sleeve 1 by screwing the nut at the moment;

the removal method of the spinner flask 7 is as follows:

and (3) executing the reverse process of the operation, wherein an operator holds the rotary bottle 7, twists the bottle-withdrawing nut 5, pushes the bottle mouth of the rotary bottle 7 by the lower end surface of the bottle-withdrawing nut to separate the bottle mouth from the ground part, continues to twist the bottle-withdrawing nut 5 until the second internal thread 53 of the bottle-withdrawing nut is separated from the contact with the first thread section 21 on the semicircular double-thread ring 2, then the rotary bottle naturally slides down along with the bottle-withdrawing nut 5, and after the bottle slides to the lowest point, the hand side holding the rotary bottle exerts a slight force to take the rotary bottle out of the claw 54 part of the bottle-withdrawing nut 5.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a rotatory evaporimeter is with locking and withdraw a bottled putting which characterized in that: the method comprises the following steps: glass sleeve pipe (1), a set of semicircle double thread ring (2), silica gel friction ring (3), thread retainer plate (4), move back bottle nut (5) and screw thread anticreep ring (6), glass sleeve pipe (1) outside is located relatively to semicircle double thread ring (2), the neck of glass sleeve pipe (1) is located in silica gel friction ring (3), the outside of semicircle double thread ring (2) is located in thread retainer plate (4), the last of glass sleeve pipe (1) is located in screw thread anticreep ring (6), move back the outside that semicircle double thread ring (2), thread retainer plate (4) and screw thread anticreep ring (6) are located in bottle nut (5), and it is connected with semicircle double thread ring (2) and screw thread anticreep ring (6) simultaneously, semicircle double thread ring (2) and glass sleeve pipe (1) phase-match.

2. The rotary evaporator locking and bottle ejecting device according to claim 1, wherein: semicircle double thread ring (2) are the echelonment, and it includes first screw thread section (21), second screw thread section (22) and third linkage segment (23), first screw thread section (21) and third linkage segment (23) are located in second screw thread section (22), just the cross-section both ends of second screw thread section (22) are equipped with locating piece (24) and constant head tank (25) respectively, and the junction between two halves circle double thread ring (2) is through locating piece (24) and constant head tank (25) connection of detaining mutually.

3. The rotary evaporator locking and bottle ejecting device according to claim 2, wherein: be equipped with slot sawtooth groove (26) on the inner wall of second screw thread section (22), just slot sawtooth groove (26) cooperate with silica gel friction circle (3).

4. The rotary evaporator locking and bottle ejecting device according to claim 2, wherein: the second thread segments (22) are tapered.

5. The rotary evaporator locking and bottle ejecting device according to claim 2, wherein: move back bottle nut (5) including moving back bottle nut body (51), it is equipped with first internal thread (52) and second internal thread (53) on the inner wall of bottle nut body (51) to move back, just it is equipped with a set of claw (54) to move back the tip of bottle nut body (51).

6. The rotary evaporator locking and bottle ejecting device according to claim 1, wherein: the thread anti-drop ring (6) comprises a ring, a retaining ring (61) is arranged at one end of the ring, a first external thread (62) is arranged on one side of the retaining ring (61), and a first internal thread (52) on the bottle-withdrawing nut body (51) is in threaded connection with the first external thread (62).

7. The rotary evaporator locking and bottle ejecting device according to claim 2, wherein: and a second external thread is arranged on the first thread section (21), and a second internal thread (53) on the inner wall of the bottle withdrawing nut body (51) is in threaded connection with the second external thread.

8. The rotary evaporator locking and bottle ejecting device according to claim 1, wherein: the glass sleeve is characterized by further comprising a rotary bottle (7), one end of the rotary bottle (7) is arranged at the head of the glass sleeve (1), the inner wall of the end of the rotary bottle is pressed at the end of the semicircular double-thread ring (2), and the outer portion of the rotary bottle is clamped in the claw (54).