Low-temperature circulating refrigerator for laboratory

Abstract

The utility model discloses a low-temperature circulating refrigerator for a laboratory, and relates to the field of refrigerators. The low-temperature circulating refrigerator for the laboratory comprises a machine body, and further comprises a liquid conveying mechanism used for conveying cooling liquid into a liquid containing groove; the fixing sleeve is connected to the machine body in a lifting manner; the wrapping air bag is arranged in the fixing sleeve in a surrounding mode, a hollow cavity is formed between the inner wall and the outer wall of the fixing sleeve, the wrapping air bag is fixedly communicated with the hollow cavity through a pressure relief pipe, and a pressure relief valve is arranged on the pressure relief pipe; the guide pipe is fixedly communicated with the hollow cavity; according to the reaction kettle disclosed by the utility model, the cooling liquid conveyed into the liquid storage tank can be in full contact with the reaction kettle by disturbing the cooling liquid, so that the reaction efficiency of materials in the reaction kettle in a low-temperature environment is improved, and the neck part of the reaction kettle is clamped and fixed through the elastic wrapping air bag; therefore, the situation that the clamping force on the neck of the reaction kettle is too large, and the reaction kettle is damaged can be prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerators, and in particular relates to a laboratory low-temperature circulation refrigerator. Background Art

[0002] The low-temperature circulating refrigerator is mainly used to pump the cooling liquid that has been reduced to a certain temperature into the double-layer reactor at a certain flow rate to provide a suitable reaction temperature for the reaction materials in the reactor;

[0003] For example, the utility model patent with the patent application number of 201020577891.4 and the name of low-temperature circulation refrigerator discloses a low-temperature circulation refrigerator for providing low-temperature conditions for a reactor, which includes a body, a liquid tank, a tank cover, a pump body and inlet and outlet pipes. A bracket is also arranged on the top surface of the body near the liquid tank, and a clamp that can move up and down is arranged on the bracket, and a clamp is clamped on the clamp; the reactor is located in the liquid tank, and the clamp clamps the reactor to stabilize the reactor. The low-temperature circulation refrigerator disclosed by the utility model can provide low temperature for a larger double-layer reactor and provide a low-temperature environment for a smaller reactor, thereby improving convenience and saving resources.

[0004] The above patent also has the following defects: since the coolant transported into the liquid tank is in a static state, the coolant cannot fully contact the reactor, thereby reducing the reaction efficiency of the materials in the reactor under low temperature environment. In view of this, the present utility model is specially proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a laboratory low-temperature circulation refrigerator which can overcome the above problems or at least partially solve the above problems.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A laboratory low-temperature circulation refrigerator comprises a body, on which a liquid tank is provided, and further comprises: an infusion mechanism for conveying cooling liquid into the liquid tank; a fixed sleeve, which is connected to the body in a lifting manner; a wrapping airbag, which is arranged around the fixed sleeve, wherein a hollow cavity is provided between the inner and outer walls of the fixed sleeve, and the wrapping airbag is fixedly connected to the hollow cavity through a pressure relief pipe, and a pressure relief valve is provided on the pressure relief pipe; a catheter, which is fixedly connected to the hollow cavity, wherein one end of the catheter away from the hollow cavity is fixedly connected to a hollow tank, and the hollow tank is provided with an air jet hole; a pressurizing component, which is arranged on the body and is used to pressurize the wrapping airbag.

[0008] In order to achieve inflation and pressurization of the wrapped airbag, preferably, the pressurization component includes an air pump fixedly mounted on the body, the output end of the air pump is fixedly connected to the wrapped airbag through a pipe 1, and an activated carbon filter is arranged in the input end of the air pump.

[0009] In order to facilitate the discharge of gas in the wrapped airbag, preferably, it also includes a second pipe fixedly connected to the wrapped airbag, and a solenoid valve is provided on the second pipe.

[0010] In order to transport the refrigerant liquid to the liquid tank through the external liquid storage tank, preferably, the liquid infusion mechanism includes a water pump fixedly mounted on the body, and the output end of the water pump is fixedly connected to the liquid tank.

[0011] In order to facilitate the cooling liquid in the liquid tank to be discharged back to the liquid storage tank for recycling, further, a drain pipe is included, the drain pipe is fixedly connected to the liquid tank, and a valve switch is arranged on the drain pipe.

[0012] In order to be able to adjust the height of the fixing sleeve according to needs, preferably, a guide plate is fixedly connected to the body, a support rod is slidably connected to the guide plate, the fixing sleeve is fixedly connected to the support rod, a threaded hole is opened on the guide plate, a pin is threadedly connected in the threaded hole, and the pin is against the guide plate.

[0013] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0014] The utility model disturbs the coolant so that the coolant transported into the liquid tank can fully contact the reactor, thereby improving the reaction efficiency of the material in the reactor under a low-temperature environment, and clamps and fixes the neck of the reactor by an elastic wrapping airbag, thereby preventing the neck of the reactor from being damaged due to excessive clamping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the body of the utility model;

[0017] Figure 3 This is a partial structural diagram of the utility model. Figure 1 ;

[0018] Figure 4 It is a partial structural diagram of the utility model Figure 2 ;

[0019] Figure 5 The utility model Figure 3 Enlarged view of part A.

[0020] In the figure: 1. body; 101. liquid tank; 102. water pump; 103. discharge pipe; 2. guide plate; 201. support rod; 202. pin; 3. fixing sleeve; 301. wrapped air bag; 302. suction pump; 303. pipeline 1; 304. pipeline 2; 305. solenoid valve; 4. hollow cavity; 401. pressure relief pipe; 402. catheter; 403. hollow tank; 404. jet hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0022] Embodiment 1:

[0023] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The laboratory low-temperature circulation refrigerator includes a body 1, on which a liquid tank 101 is provided, and also includes: an infusion mechanism for conveying cooling liquid into the liquid tank 101; a fixed sleeve 3, which is connected to the body 1 by lifting; a wrapping airbag 301, which is arranged around the fixed sleeve 3, wherein a hollow cavity 4 is provided between the inner and outer walls of the fixed sleeve 3, and the wrapping airbag 301 is fixedly connected to the hollow cavity 4 through a pressure relief pipe 401, and a pressure relief valve is provided on the pressure relief pipe 401; a conduit 402, which is fixedly connected to the hollow cavity 4, wherein one end of the conduit 402 away from the hollow cavity 4 is fixedly connected to a hollow tank 403, and a jet hole 404 is provided on the hollow tank 403; a pressurizing component, which is arranged on the body 1 and is used to pressurize the wrapping airbag 301.

[0024] The pressurizing component includes an air pump 302 fixedly mounted on the body 1 , the output end of the air pump 302 is fixedly connected to the wrapped airbag 301 through a pipe 1 303 , and an activated carbon filter is arranged in the input end of the air pump 302 .

[0025] The infusion mechanism includes a water pump 102 fixedly mounted on the body 1 , and an output end of the water pump 102 is fixedly connected to the liquid reservoir 101 .

[0026] The body 1 is fixedly connected with a guide plate 2, the guide plate 2 is slidably connected with a support rod 201, the fixing sleeve 3 is fixedly connected with the support rod 201, a threaded hole is provided on the guide plate 2, a pin 202 is threadedly connected in the threaded hole, and the pin 202 abuts against the guide plate 2.

[0027] When the material in the reactor needs to be subjected to a low-temperature reaction, firstly, a proper amount of coolant is transported to the liquid tank 101 through the water pump 102 of the external liquid storage tank, and then the neck of the reactor is inserted into the fixing sleeve 3, and then the suction pump 302 is started, and the suction pump 302 absorbs external gas and transports it into the wrapped airbag 301 through the pipe 1 303, so that the wrapped airbag 301 expands and abuts against the outer wall of the neck of the reactor, so as to clamp and fix the reactor, and a one-way valve is provided on the pipe 1 303;

[0028] When the pressure of the gas pressurized into the wrapped airbag 301 is greater than the pressure relief value set by the pressure relief valve, the pressure relief valve automatically opens to release the pressure, so that the excess gas pressurized into the wrapped airbag 301 is discharged through the pressure relief pipe 401 and transported into the hollow cavity 4, thereby ensuring that the pressure inside the wrapped airbag 301 is constant. Since the wrapped airbag 301 is elastic and the gas can be compressed, it can prevent the neck of the reactor from being clamped too hard and causing damage to the reactor.

[0029] After completing the clamping and fixing of the reactor, the staff can drive the fixing sleeve 3 to move downward on the guide plate 2 by pushing the support rod 201 until the reactor and the hollow tank 403 are moved into the liquid tank 101 and contact with the coolant in the liquid tank 101, so that the material in the reactor can obtain the low temperature conditions required for the reaction. Then the staff can rotate the rotating pin 202 into the threaded hole until the pin 202 is against the guide plate 2, so as to limit and fix the support rod 201, thereby ensuring the stability of the reactor in the liquid tank 101. At the same time, the gas released into the hollow cavity 4 is transported into the hollow tank 403 through the conduit 402, and then ejected through the jet hole 404, so as to disturb the coolant, so that the coolant in the liquid tank 101 is fully in contact with the reactor, thereby improving the reaction efficiency of the material in the reactor under low temperature environment.

[0030] It should be noted that both the pipe 1 303 and the conduit 402 are made of stretchable and shrinkable hoses, so the pipe 1 303 will not interfere with the up and down movement of the fixing sleeve 3.

[0031] Embodiment 2:

[0032] Reference Figure 5 , a laboratory low-temperature circulation freezer is basically the same as Example 1, and further includes a pipe 2 304 fixedly connected to the wrapped air bag 301, and a solenoid valve 305 is arranged on the pipe 2 304; when the material to be reacted in the reactor is well reacted, the solenoid valve 305 on the pipe 2 304 is opened, so that the gas pressurized into the wrapped air bag 301 is discharged to the outside through the pipe 2 304, thereby restoring the initial unexpanded state, and then releasing the limit fixation of the reactor, so that the staff can remove the reactor from the fixing sleeve 3.

[0033] Embodiment 3:

[0034] Reference Figure 1 , Figure 2 The laboratory low-temperature circulation refrigerator is basically the same as Example 1, and further includes a drain pipe 103, which is fixedly connected to the liquid tank 101 and is provided with a valve switch; when the materials to be reacted in the reactor are well reacted, the valve switch on the drain pipe 103 is opened, so that the coolant in the liquid tank 101 is discharged back to the liquid storage tank through the drain pipe 103 connected to the external liquid storage tank for recycling, thereby reducing the waste of coolant.

[0035] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention.

Claims

1. A laboratory low-temperature circulation refrigerator, comprising a body (1), wherein the body (1) is provided with a liquid tank (101), characterized in that: Also includes: a liquid infusion mechanism for conveying cooling liquid into the liquid-receiving tank (101); A fixing sleeve (3) connected to the machine body (1) in a lifting manner; The wrapping airbag (301) is arranged around the fixing sleeve (3). A hollow cavity (4) is provided between the inner and outer walls of the fixing sleeve (3), the wrapped airbag (301) is fixedly connected to the hollow cavity (4) via a pressure relief pipe (401), and a pressure relief valve is provided on the pressure relief pipe (401); A conduit (402) is fixedly connected to the hollow cavity (4), Wherein, one end of the conduit (402) away from the hollow cavity (4) is fixedly connected to a hollow tank (403), and an air injection hole (404) is provided on the hollow tank (403); A pressurizing component is arranged on the machine body (1) and is used to increase the pressure in the wrapping airbag (301).

2. The laboratory low-temperature circulation refrigerator according to claim 1, characterized in that: The pressurizing component comprises an air pump (302) fixedly mounted on the machine body (1); the output end of the air pump (302) is fixedly connected to the wrapped air bag (301) via a pipe 1 (303); and an activated carbon filter is arranged inside the input end of the air pump (302).

3. The laboratory low-temperature circulation refrigerator according to claim 1, characterized in that: It also includes a second pipe (304) fixedly connected to the wrapping airbag (301), and a solenoid valve (305) is provided on the second pipe (304).

4. The laboratory low temperature cycle refrigerator according to claim 1, characterized in that: The infusion mechanism comprises a water pump (102) fixedly mounted on the machine body (1), and an output end of the water pump (102) is fixedly connected to the liquid storage tank (101).

5. The laboratory low-temperature circulation refrigerator according to claim 4, characterized in that: It also comprises a liquid discharge pipe (103), wherein the liquid discharge pipe (103) is fixedly connected to the liquid storage tank (101), and a valve switch is arranged on the liquid discharge pipe (103).

6. The laboratory low temperature cycle refrigerator according to claim 1, characterized in that: The machine body (1) is fixedly connected with a guide plate (2), the guide plate (2) is slidably connected with a support rod (201), the fixing sleeve (3) is fixedly connected with the support rod (201), a threaded hole is provided on the guide plate (2), a pin (202) is threadedly connected in the threaded hole, and the pin (202) abuts against the guide plate (2).

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