CN214810821U

CN214810821U - Laboratory is with splashproof stirring rod of ventilating

Info

Publication number: CN214810821U
Application number: CN202120774534.5U
Authority: CN
Inventors: 孙宇宇; 陈红余; 李平
Original assignee: Shandong First Medical University and Shandong Academy of Medical Sciences
Current assignee: Shandong First Medical University and Shandong Academy of Medical Sciences
Priority date: 2021-04-16
Filing date: 2021-04-16
Publication date: 2021-11-23
Anticipated expiration: 2031-04-16

Abstract

The utility model relates to a laboratory is with splashproof stirring rod of ventilating, including (mixing) shaft, stirring stopper, stirring vane, splashproof umbelliform blade. The stirring rod is that stirring stopper and (mixing) shaft cooperation are used, there is a branch pipe stirring stopper cavity and one side, the (mixing) shaft includes solid input shaft and hollow output shaft, and through threaded connection, the output shaft is close to the screw thread end and is equipped with the trompil, links to each other with the air pump through the stirring stopper, the umbrella form blade of splashproof carries out the breakage to the bubble at the during operation, reaches the splashproof purpose. The utility model discloses simple structure easily builds the dismantlement, has stirring, ventilates, the triple function of splashproof, guarantees the gas-liquid simultaneously and fully contacts, and gas distribution is even.

Description

Laboratory is with splashproof stirring rod of ventilating

Technical Field

The utility model belongs to the technical field of chemistry experiments articles for use, a laboratory is with splashproof stirring rod of ventilating is related to.

Background

Mechanical stirrer is a agitating unit who uses commonly in the laboratory, and the stirring rod is independent detachable usually, and stirring rod material is mainly the iron bar that has the one deck polytetrafluoroethylene of package, and a lot of reactions need ventilate when the stirring, but when the stirring rod used with the flask cooperation below, stirring paddle leaf hindered stretching into of breather pipe, hardly stretched into the liquid level bottom with the breather pipe, can't let gas and reaction liquid fully contact, and gas easily escapes from liquid level top.

In patent CN 206897295U, a stirring rod for ventilating a large reaction container through a coupler and a hollow stirring shaft is designed, the design is that the stirring rod is ventilated through an opening on a stirring blade, but the problem of ventilating a small-mouth reactor such as a flask cannot be solved, and the hollow shaft and the ventilation pipe are connected through the coupler and are not easy to build and disassemble; the hollow shaft is directly connected with the stirring blade and is not easy to clean; the stirring blade is directly provided with a hole, so that the small hole is easily blocked to cause danger.

Disclosure of Invention

An object of the utility model is to provide a laboratory is with splashproof stirring rod of ventilating to solve the problem that proposes in the above-mentioned background. The novel air-permeable stirring device has the triple functions of stirring, ventilation and splash prevention, is simple in structure and even in ventilation, and simultaneously avoids liquid from splashing so as to avoid danger.

In order to solve the technical problem, the utility model adopts the technical scheme that: a ventilating and splash-proof stirring rod for a laboratory comprises a stirring shaft, a stirring plug, an anchor type blade and a splash-proof umbrella-shaped blade. The stirring shaft and the stirring plug are matched through a sealing ring for use, the stirring shaft is divided into two sections which are respectively an input shaft with a solid structure and an output shaft with a hollow structure, one section of the stirring shaft connected with the speed control stirrer is the input shaft, one section of the stirring shaft in contact with the reaction liquid is the output shaft, and the input shaft and the output shaft are connected through threads; the output shaft is located the one end of reaction liquid and is installed anchor blade and splashproof umbelliform blade, and the one end that is close to the screw thread has the trompil, and the trompil passes through the branch pipe on the stirring plug and links to each other with the breather pipe with the air supply to with gas through the (mixing) shaft leading-in reaction liquid, the one end that the (mixing) shaft stretched into the reactor has the splashproof umbelliform blade, and the gas pocket on the splashproof umbelliform blade reaches the even purpose of gaseous dispersion.

The stirring shaft is divided into two sections, namely an input shaft and an output shaft, the input shaft is a solid shaft and is connected with the power of the motor through a motor locking knob, and the output shaft is hollow and is provided with an opening.

The input shaft of the stirring shaft is connected with the output shaft through threads, and the rotation direction of a speed control stirrer used in a laboratory is clockwise, so that the threads are designed to rotate rightwards.

The stirring plug is provided with a branch pipe, the stirring plug is of a hollow structure, and the branch pipe and the hollow structure of the stirring plug form a channel.

The stirring plug is matched with the stirring shaft for use, and a cavity is arranged between the stirring plug and the stirring shaft.

The stirring plug all adds the sealing washer in trompil department both ends, and the sealing washer material is viton, and the stirring plug compresses tightly the sealing washer with the (mixing) shaft through the cock and seals, and the cock is connected with stirring plug for the section of thick bamboo threaded connection, goes up the plug and uses the right-handed screw, and lower cock is with the left-handed screw.

The anchor type blade is of a structure capable of being opened and closed, is in a closed state when not in work, is automatically opened when the stirring rod rotates at a high speed, and is made of polytetrafluoroethylene.

The splash-proof umbrella-shaped blade is provided with air holes and is made of polytetrafluoroethylene.

The beneficial effects of the utility model are as follows.

1. The input shaft of the solid structure is connected with the output shaft of the hollow structure through threads, the threads are right-handed, and the threads are only screwed when the speed control stirrer drives the stirring shaft to rotate; the hollow input shaft is easy to disassemble and clean.

2. When the air is ventilated in the solution with high content of viscous liquid or solid matter, the air vent is not easy to be blocked.

3. The sealing rings are arranged at the two ends of the opening of the stirring plug, so that the gas is prevented from escaping from a gap between the stirring plug and the stirring shaft to cause gas waste.

4. The chemical reaction in the flask-type small-opening reactor is a gas-liquid reaction, reaction gas is introduced through the stirring shaft, gas introduced from the output shaft enters liquid to generate large bubbles by virtue of the rotation of the stirring shaft, the large bubbles are broken through the air holes in the umbrella-shaped blades to prevent the liquid from splashing, and meanwhile, the uniform distribution of the gas is ensured to be fully contacted with a reaction medium.

5. Stirring plug and (mixing) shaft assembly use, are applicable to flask class osculum reactor, and the assembly is simple, and the device is easily built, simple structure, quick detachable washs convenient to use.

Drawings

Fig. 1 is an assembly view of the present invention and other auxiliary devices.

Fig. 2 is an overall view of the present invention.

Fig. 3 is a sectional view taken along line a-a of the present invention.

Fig. 4 is an exploded view of the stirring plug of the present invention.

Fig. 5 shows an input shaft according to the present invention.

Fig. 6 shows an output shaft of the present invention.

In the figure: 1-input shaft, 2-screw thread, 3-upper cock, 4-output shaft, 5-through hole, 6-open hole, 7-upper sealing ring, 8-plug cylinder, 9-branch pipe, 10-lower sealing ring, 11-lower cock, 12-stirring blade shaft, 13-anchor blade, 14-splash umbrella-shaped blade, 15-upper screw thread, 16-lower screw thread, 17-air hole, 18-vent pipe, 19-air source, 20-speed control stirrer, 21-speed regulation knob, 22-rotating speed display screen, 23-switch, 24-height adjusting device, 25-iron, 26-flask clamp and 27-reactor.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

The ventilating and splash-proof stirring rod for the laboratory as shown in figure 1 mainly comprises a stirring shaft, a stirring plug, anchor blades and splash-proof umbrella blades. The input shaft 1 and the output shaft 4 jointly form a stirring shaft which is connected through a thread 2, a through hole 5 is arranged at the axial position of the output shaft 4, an opening 6 is arranged at the circumferential position of the output shaft, an anchor blade 13 and a splash-proof umbrella-shaped blade 14 are arranged at the other end of the output shaft, the stirring plug is jointly formed by an upper rotating plug 3,

sealing rings

7 and 10, a plug cylinder 8, a branch pipe 9 on the plug cylinder and a lower rotating plug 11, the branch pipe 9 on the stirring plug is communicated with an air source 19 through a vent pipe 18, a switch 23 and a rotating speed display screen 22 are arranged on a speed control stirrer 20 for displaying the rotating speed and adjusting the speed through a speed adjusting knob 21, the speed control stirrer 20 locks the stirring shaft through a locking knob, and a reactor 27 is connected with a height changing device 24 through a flask clamp 26 so as to further adjust the height on an iron support 25.

The branch pipe 9 arranged on the side wall of the stirring plug is connected with the vent pipe 18, and the opening 6 on the stirring shaft and the branch pipe 9 form a closed space through the

sealing rings

7 and 10, so that gas is guided into the output shaft 4.

The stirring shaft is provided with an input shaft 1 and an output shaft 4, wherein the input shaft 1 can be connected with the power of a motor through a stirring shaft locking knob, the output shaft 4 is hollow and is provided with an opening 6, the input shaft 1 is simultaneously connected with the output shaft 4 through a thread 2, and gas enters the stirring shaft through the opening 6 on the stirring shaft so as to enter reaction liquid.

The screw thread 2 that input shaft 1 and output shaft 4 are connected is the right-hand thread, and difficult not hard up when the (mixing) shaft rotates, the leakproofness is better.

The stirring plug is composed of

sealing rings

7 and 10, an upper rotating plug 3, a lower rotating plug 11, a stirring plug cylinder 8 and a branch pipe 9 on the plug cylinder, the

rotating plugs

3 and 11 are used for screwing the

sealing rings

7 and 10, the sealing rings and the stirring shaft are sealed, and gas can only enter an opening 6 on the stirring shaft from the branch pipe 9, so that the gas enters the hollow structure of the stirring shaft.

The upper cock 3 is connected with the stirring plug cylinder 8 through an upper thread 15, the rotation direction is right-handed rotation, the lower cock 11 is connected with the stirring plug cylinder 8 through a lower thread 16, the rotation direction is left-handed rotation, and the cock is not loosened when the stirring shaft rotates.

A cavity is arranged between the stirring plug and the stirring shaft.

The anchor type blades 13 and the stirring blade shaft 12 are integrated to form stirring blades together, the anchor type blades 13 can be automatically opened and closed and are in a closed state when not used, and the stirring blades 13 are opened by high-speed rotation of the stirring shaft when the stirring device is used, so that the stirring effect is achieved.

The gas introduced from the hollow structure of the stirring shaft by virtue of the rotation of the stirring shaft forms large bubbles in the splash-proof umbrella-shaped blades when the gas just enters the liquid, and the large bubbles enter the reaction liquid in the form of small bubbles through the air holes 17 on the umbrella-shaped blades 14, so that the liquid is effectively prevented from splashing, and the mixing and homogenizing effect is improved.

Installation and working process: according to the building device shown in fig. 1, a reactor 27 is connected with a height changing device 24 through a flask clamp 26, so that the height of the reactor on an iron support 25 is adjusted, after the height is adjusted,

sealing rings

7 and 10 of a stirring plug are placed into a stirring plug cylinder 8, a cock 3 and a cock 11 are covered to be not screwed for standby, an input shaft 1 and an output shaft 4 of the stirring shaft are screwed through threads 2, the stirring shaft is sleeved into the stirring plug cylinder 8 which is not screwed, the position of the stirring plug is adjusted, a channel formed by a branch pipe 9 on the stirring plug and an opening on the output shaft 4 are in the same straight line, at the moment, the upper cock and the lower cock of the stirring plug are screwed, the sealing rings are in sealing fit with the stirring shaft, and the gas entering from the branch pipe 9 is ensured to enter the hollow output shaft 4 completely. The matching body formed by the stirring shaft and the stirring plug is inserted into the reactor, the stirring plug and the ground plug of the reactor 27 are sealed, the anchor type blade is in a closed state at the moment, the anchor type blade 13 can be opened through high-speed rotation, the Bernoulli principle is mainly utilized, then the input shaft 1 of the stirring shaft is in power connection with the speed control stirrer 20 through a locking knob on the speed control stirrer, and the speed control stirrer 20 can be connected with an iron stand 25 through a height adjusting device 24 to adjust the height on the iron stand 25. The gas in the gas source 19 is communicated with the branch pipe 9 of the stirring plug through the vent pipe 18, and the device is installed at the moment. Reaction liquid is poured into the reactor 27, a switch 23 of a speed control stirrer is turned on, speed is regulated by a speed regulation knob 21, the speed can be monitored on a rotating speed display screen 22, a gas source 19 is turned on after the rotating speed is regulated to ventilate the reactor 27, the anchor type blades 13 are used for stirring, the splash-proof umbrella-shaped blades 14 break large bubbles formed by gas into small bubbles to enter the reaction liquid, and the gas and the liquid are uniformly mixed. After the experiment is finished, the switch 23 of the speed control stirrer is closed firstly, the device is disassembled from top to bottom, the ventilation is stopped when the stirring shaft is not contacted with the reaction liquid, the screw thread 2 between the input shaft 1 and the output shaft 4 is unscrewed firstly when the hollow part of the stirring rod is cleaned, and then the elongated test tube brush is used for cleaning.

The specific installation and working procedures of the present invention are described in the above embodiments, and the modifications and improvements of the present invention are also covered by the protection scope of the present invention.

Claims

1. The utility model provides a laboratory is with splashproof stirring rod of ventilating, includes (mixing) shaft, stirring stopper, anchor formula blade, splashproof umbelliform blade, its characterized in that: the stirring plug is matched with the stirring shaft for use, the stirring plug is of a hollow structure, one side of the stirring plug is provided with a branch pipe, the upper part and the lower part of the stirring plug are provided with two cocks and two sealing rings, the branch pipe is directly connected with the vent pipe, and the cocks can press the sealing rings to seal the space between the sealing rings and the stirring shaft by screwing; the stirring shaft is divided into two sections, namely a solid input shaft and a hollow output shaft which are connected through threads; one end of the output shaft, which is positioned in the reactor, is provided with an anchor blade and a splash-proof umbrella-shaped blade, one end of the output shaft, which is close to the screw thread, is provided with an opening, and the opening and a branch pipe on the stirring plug are connected with a gas source through a vent pipe, so that the gas is introduced into the reaction liquid; the anchor type blades can be opened and closed, and the splash-proof umbrella-shaped blades are provided with air holes.

2. The laboratory ventilating anti-splash mixing rod as claimed in claim 1, wherein the input shaft and the output shaft are connected through a screw thread, and the rotation direction of the screw thread is right-handed.

3. The ventilating and anti-splash stirring rod for the laboratory as claimed in claim 1, wherein a cavity is formed between the stirring plug and the stirring shaft, and the cavity is sealed by an upper sealing ring and a lower sealing ring, and the sealing rings are made of fluororubber.

4. The laboratory ventilating anti-splash stirring rod as claimed in claim 1, wherein the screw thread direction of the upper cock on the stirring plug is right-handed, and the screw thread direction of the lower cock is left-handed.

5. The ventilating and anti-splash stirring rod for the laboratory as claimed in claim 1, wherein the anchor type blades on the stirring shaft can be automatically opened and closed, and the anti-splash umbrella-shaped blades are provided with openings made of polytetrafluoroethylene.

6. The laboratory ventilating splash-proof stirring rod as claimed in claim 1, wherein the stirring plug is provided with a branch pipe, and an opening is formed at the connecting position of the branch pipe and the side surface of the stirring plug.

7. The ventilating and anti-splash stirring rod for the laboratory as claimed in claim 1, wherein four holes are formed in one side of the output shaft close to the stirring plug, and gas enters the hollow structure of the output shaft through the four holes and then enters the reactor.