Vacuum concentrator capable of simultaneously concentrating solvents with various concentrations

Abstract

The utility model discloses a vacuum concentrator capable of simultaneously concentrating solvents with various concentrations, which comprises a base, a heating tank arranged above the base, a heating and weighing mechanism arranged in the heating tank, a placing plate arranged at the top end of the heating tank, a placing port arranged on the placing plate, a constant volume bottle arranged in the placing port, and a vacuum pump arranged in the constant volume bottle. A heating weighing mechanism is arranged on the base, a placing plate is arranged on the heating weighing mechanism, a connecting cover is arranged above the placing plate, the upper part of the connecting cover is connected with a condensing mechanism, and driving mechanisms are arranged on two sides of the connecting cover, so that the mass of different constant-volume bottles and the mass of solvents in the constant-volume bottles can be measured through a weighing sensor before water bath heating; when liquid in the constant volume bottle is evaporated through water bath heating and the change value of the weighing sensor reaches a target value, the corresponding indicator lamps on the indicator lamp group can be controlled to shine, and the buzzer gives an alarm to remind a worker to close the valve on the gas collecting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum concentrators, in particular to a vacuum concentrator capable of simultaneously concentrating solvents of various concentrations. Background Art

[0002] A parallel concentrator is an instrument that concentrates samples. It is widely used in the detection of pesticide residues, veterinary drug residues, and environmental organic matter. The detection process requires sample extraction (extraction) and concentration. Therefore, how to perform rapid and non-destructive concentration is one of the key steps in the detection process.

[0003] In the process of using existing vacuum concentrators, in order to conduct batch tests, multiple sample placement areas are usually set up to improve efficiency. However, in the face of complex and changeable experimental requirements, scientific researchers often need to manually adjust concentration parameters or concentrate samples of different concentrations in batches, which increases the workload and reduces work efficiency. No effective solution has been proposed for the problems in related technologies. Utility Model Content

[0004] In view of the problems in the related art, the utility model proposes a vacuum concentrator that can simultaneously concentrate solvents of various concentrations, so as to overcome the above-mentioned technical problems existing in the existing related art.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A vacuum concentrator capable of simultaneously concentrating solvents of various concentrations comprises a base, a heating tank is arranged above the base, a heating weighing mechanism is arranged inside the heating tank, a placement plate is arranged on the top of the heating tank, the placement plate is connected to the heating tank, a placement port is arranged on the placement plate, a constant volume bottle is arranged inside the placement port, a connecting cover is arranged above the placement plate, the top of the connecting cover is connected to the condensing mechanism, and driving mechanisms are arranged on both sides of the connecting cover.

[0007] Furthermore, in order to facilitate the heating and concentration of samples with different initial concentrations, the heating and weighing mechanism includes a heating plate arranged at the bottom end of the heating tank, an insulation rod is arranged above the heating plate, a mounting plate is arranged on the top of the insulation rod, and weighing sensors are arranged on the mounting plate. The number of weighing sensors is the same as the number of placement ports. A support frame is arranged above the mounting plate. The weighing sensors are electrically connected to the controller, and the controller is arranged on the outside of the base.

[0008] Furthermore, in order to facilitate the addition and discharge of water to the heating tank, a water outlet pipe is provided on one side of the heating tank, a water inlet pipe is provided on one side of the water outlet pipe, electromagnetic valves are provided on the water outlet pipe and the water inlet pipe, a liquid level gauge is provided inside the heating tank, one end of the liquid level gauge is placed on the outside of the placement plate, and the liquid level gauge is electrically connected to the controller.

[0009] Furthermore, in order to promptly remind the staff to close the vacuum pipeline after the concentration is completed, an indicator light group is provided on one side of the controller and a buzzer is provided on the controller.

[0010] Furthermore, the condensation mechanism includes a sealing cover arranged on the connecting cover, a hollow connecting column is arranged in the middle of the sealing cover, the hollow connecting column is connected to the gas collecting pipe, a valve is arranged on the gas collecting pipe, the gas collecting pipe is connected to the connecting pipe, the connecting pipe is connected to the cold trap assembly, the bottom of the cold trap assembly is connected to the collecting bottle, and the exhaust port of the cold trap assembly is connected to the vacuum pump through the exhaust pipe.

[0011] Furthermore, in order to facilitate the adjustment of the height of the cold trap assembly, a lifting platform is provided below the cold trap assembly, and a connecting sleeve is provided on the cold trap assembly, and the connecting sleeve is connected to the limiting rod.

[0012] Furthermore, in order to ensure the sealing effect inside the constant volume flask, the driving mechanism includes a first connecting block arranged on both sides of the connecting cover, the first connecting block is hinged to the cylinder, the other end of the cylinder is hinged to the second connecting block, and the second connecting block is connected to the placement plate.

[0013] The beneficial effects of the utility model are:

[0014] (1) By setting up a heating weighing mechanism and a condensing mechanism, the mass of different constant volume bottles and the solvent inside the constant volume bottles can be measured by a weighing sensor before water bath heating. When the liquid inside the constant volume bottle is evaporated by water bath heating, when the change value of the weighing sensor reaches the target value, the corresponding indicator light on the control indicator light group can be lit, and an alarm can be sounded through a buzzer to remind the staff to close the valve on the gas collecting pipe, so that the inside of the constant volume bottle will no longer be condensed, thereby improving the overall work efficiency of the staff.

[0015] (2) By setting a liquid level meter inside the hot water tank, the liquid level inside the hot water tank can be measured. By setting an electromagnetic valve, when the liquid level inside the hot water tank decreases during the heating process, the electromagnetic valve can be controlled by the controller to open and automatically replenish water inside the hot water tank, thereby preventing dry burning from damaging the heating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The utility model is a front view of a vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to an embodiment of the utility model.

[0018] Figure 2 It is a side view of a vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to an embodiment of the utility model.

[0019] Figure 3 The utility model is a structural diagram of a condensation mechanism of a vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to an embodiment of the utility model.

[0020] Figure 4 The utility model is a diagram showing the internal structure of a heating tank of a vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Base; 2. Heating tank; 3. Heating and weighing mechanism; 301. Heating plate; 302. Insulating rod; 303. Mounting plate; 304. Weighing sensor; 305. Support frame; 306. Controller; 4. Placement plate; 5. Placement port; 6. Constant volume bottle; 7. Condensation mechanism; 701. Sealing cover; 702. Hollow connecting column; 703. Gas collecting pipe; 704. Valve; 705. Connecting pipe; 706. Cold trap assembly; 707. Collecting bottle; 708. Exhaust pipe; 709. Vacuum pump; 8. Driving mechanism; 801. First connecting block; 802. Cylinder; 803. Second connecting block; 9. Water outlet pipe; 10. Water inlet pipe; 11. Solenoid valve; 12. Liquid level meter; 13. Indicator light group; 14. Buzzer; 15. Connecting cover; 16. Lifting platform; 17. Connecting sleeve; 18. Limiting rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] According to an embodiment of the utility model, a vacuum concentrator capable of simultaneously concentrating solvents of various concentrations is provided.

[0025] Embodiment 1

[0026] like Figure 1-Figure 4As shown, according to the embodiment of the utility model, a vacuum concentrator that can simultaneously concentrate solvents of multiple concentrations includes a base 1, a heating tank 2 is provided above the base 1, a heating weighing mechanism 3 is provided inside the heating tank 2, a placement plate 4 is provided at the top of the heating tank 2, the placement plate 4 is connected to the heating tank 2, a placement port 5 is provided on the placement plate 4, a constant volume bottle 6 is provided inside the placement port 5, a connecting cover 15 is provided above the placement plate 4, the connecting cover 15 is connected to a fixed block through a rotating shaft, the fixed block is placed above the base 1, the connection cover 15 is connected to a condensation mechanism 7 above, driving mechanisms 8 are provided on both sides of the connecting cover 15, the heating weighing mechanism 3 includes a heating plate 301 arranged at the bottom end of the heating tank 2, a heat insulating rod 302 is provided above the heating plate 301, a mounting plate 303 is provided at the top of the heat insulating rod 302, a weighing sensor 304 is provided on the mounting plate 303, and the number of weighing sensors 304 is the same as the number of placement ports 5 The amount is the same, a support frame 305 is provided above the mounting plate 303, the weighing sensor 304 is electrically connected to the controller 306, the controller 306 is arranged on the outside of the base 1, a water outlet pipe 9 is provided on one side of the heating tank 2, a water inlet pipe 10 is provided on one side of the water outlet pipe 9, the water inlet pipe 10 is connected to a water source, and can supply water to the heating tank 2, electromagnetic valves 11 are provided on the water outlet pipe 9 and the water inlet pipe 10, a liquid level gauge 12 is provided inside the heating tank 2, one end of the liquid level gauge 12 is placed on the outside of the placement plate 4, the liquid level gauge 12 is electrically connected to the controller 306, an indicator light group 13 is provided on one side of the controller 306, and a buzzer 14 is provided on the controller 306, the driving mechanism 8 includes a first connecting block 801 arranged on both sides of the connecting cover 15, the first connecting block 801 is hinged to the cylinder 802, the other end of the cylinder 802 is hinged to the second connecting block 803, and the second connecting block 803 is connected to the placement plate 4.

[0027] like Figure 1-Figure 4 As shown, a hollow connecting column 702 is provided in the middle of the sealing cover 701, and the hollow connecting column 702 is connected to the gas collecting pipe 703. The gas collecting pipe 703 is provided with a valve 704. The gas collecting pipe 703 is connected to a connecting pipe 705, and the connecting pipe 705 is connected to a cold trap assembly 706. The bottom of the cold trap assembly 706 is connected to a collecting bottle 707. The discharge port of the cold trap assembly 706 is connected to a vacuum pump 709 through an exhaust pipe 708. A lifting platform 16 is provided below the cold trap assembly 706, and a connecting sleeve 17 is provided on the cold trap assembly 706. The connecting sleeve 17 is connected to a limiting rod 18.

[0028] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0029] In actual application, when it is necessary to concentrate samples of different concentrations, the constant volume bottle 6 is placed on the support frame 305 through the placement port 5, and then the cylinder 802 is started to drive the connecting cover 15 to move, so that the constant volume bottle 6 is sealed, and the weighing sensor 304 under the support frame 305 can measure the weight of the constant volume bottle 6, and the target values ​​of multiple weighing sensors 304 are preset through the display screen on the controller 306. When the liquid inside the constant volume bottle 6 is evaporated by heating in a water bath, the vacuum pump 709 is started to extract the steam inside the constant volume bottle 6. The steam is condensed by the cold trap assembly 706, so that the condensed steam becomes water droplets and falls into the collecting bottle 707. When the change value of the weighing sensor 304 reaches the target value, the controller 306 will control the indicator light group 13 corresponding to the constant volume bottle 6 to light up, and make a sound through the buzzer 14 to remind the staff to deal with it in time. The staff can close the valve 704 on the gas collecting pipe 703 to prevent the inside of the constant volume bottle 6 from condensing. When all the constant volume bottles 6 have completed the concentration, the connecting cover 15 is opened to take the constant volume bottle 6.

[0030] In summary, with the aid of the above-mentioned technical scheme of the utility model, by setting up a heating weighing mechanism 3 and a condensing mechanism 7, the mass of different constant volume bottles 6 and the solvent inside the constant volume bottle 6 can be measured by the weighing sensor 304 before water bath heating. When the liquid inside the constant volume bottle 6 is evaporated by water bath heating, when the change value of the weighing sensor 304 reaches the target value, the corresponding indicator light on the control indicator light group 13 can be lit, and an alarm can be sounded through the buzzer 14 to remind the staff to close the valve 704 on the gas collecting pipe 703, so that the inside of the constant volume bottle 6 is no longer concentrated, thereby improving the overall work efficiency of the staff, and by setting up a liquid level gauge 12 inside the hot water tank, the liquid level inside the hot water tank can be measured, and by setting up an electromagnetic valve 11, when the liquid level inside the hot water tank decreases during the heating process, the electromagnetic valve 11 can be controlled by the controller 306 to open and automatically replenish water to the inside of the hot water tank to prevent dry burning and damage to the heating plate 301.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vacuum concentrator capable of simultaneously concentrating solvents of various concentrations, characterized in that: The invention comprises a base (1), a heating tank (2) is provided above the base (1), a heating weighing mechanism (3) is provided inside the heating tank (2), a placement plate (4) is provided at the top of the heating tank (2), the placement plate (4) is connected to the heating tank (2), a placement opening (5) is provided on the placement plate (4), a constant volume bottle (6) is provided inside the placement opening (5), a connecting cover (15) is provided above the placement plate (4), the top of the connecting cover (15) is connected to a condensing mechanism (7), and driving mechanisms (8) are provided on both sides of the connecting cover (15).

2. A vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to claim 1, characterized in that: The heating weighing mechanism (3) comprises a heating plate (301) arranged at the bottom end of the heating tank (2); a heat insulating rod (302) is arranged above the heating plate (301); a mounting plate (303) is arranged at the top end of the heat insulating rod (302); a weighing sensor (304) is arranged on the mounting plate (303); the number of the weighing sensors (304) is the same as the number of the placement openings (5); a support frame (305) is arranged above the mounting plate (303); the weighing sensor (304) is electrically connected to a controller (306); and the controller (306) is arranged on the outside of the base (1).

3. A vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to claim 2, characterized in that: A water outlet pipe (9) is provided on one side of the heating tank (2), a water inlet pipe (10) is provided on one side of the water outlet pipe (9), and electromagnetic valves (11) are provided on the water outlet pipe (9) and the water inlet pipe (10). A liquid level meter (12) is provided inside the heating tank (2), one end of the liquid level meter (12) is placed on the outside of the placement plate (4), and the liquid level meter (12) is electrically connected to the controller (306).

4. A vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to claim 3, characterized in that: An indicator light group (13) is provided on one side of the controller (306), and a buzzer (14) is provided on the controller (306).

5. The vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to claim 1, characterized in that: The condensing mechanism (7) comprises a sealing cover (701) arranged on the connecting cover (15), a hollow connecting column (702) is arranged in the middle of the sealing cover (701), the hollow connecting column (702) is connected to the gas collecting pipe (703), the gas collecting pipe (703) is provided with a valve (704), the gas collecting pipe (703) is connected to the connecting pipe (705), the connecting pipe (705) is connected to the cold trap assembly (706), the bottom of the cold trap assembly (706) is connected to the collecting bottle (707), and the discharge port of the cold trap assembly (706) is connected to the vacuum pump (709) through the exhaust pipe (708).

6. The vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to claim 5, characterized in that: A lifting platform (16) is provided below the cold trap assembly (706), a connecting sleeve (17) is provided on the cold trap assembly (706), and the connecting sleeve (17) is connected to a limiting rod (18).

7. The vacuum concentrator capable of simultaneously concentrating solvents of various concentrations according to claim 1, characterized in that: The driving mechanism (8) comprises a first connecting block (801) arranged on both sides of the connecting cover (15); the first connecting block (801) is hinged to the cylinder (802); the other end of the cylinder (802) is hinged to the second connecting block (803); and the second connecting block (803) is connected to the placement plate (4).

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