Chloroform recovery instrument

Abstract

The utility model discloses a chloroform recovery instrument, which comprises a machine body, a chloroform collecting device, a chloroform collecting device and a chloroform collecting device, the heating part is arranged at the bottom of the accommodating part; the supporting base is assembled at the bottom position of the machine body, the flask is matched with the supporting base in a pluggable mode, and a liquid inlet channel is formed between the flask and the supporting base; a chloroform waste liquid container; one end of the liquid inlet pipeline is communicated with the liquid inlet channel, and the other end of the liquid inlet pipeline is inserted below the liquid level of the chloroform waste liquid container; the liquid inlet pump is connected to the liquid inlet pipeline; a tube connector part is formed above the chloroform distillate bottle, and a weighing sensor is arranged at the bottom of the chloroform distillate bottle; one end of the condensing bottle is connected with the top of the flask, and the other end is communicated with the chloroform distillate bottle; and the first negative pressure diaphragm pump is connected with the condensation bottle. According to the chloroform recovery instrument provided by the utility model, automatic liquid taking and automatic distillation separation of chloroform can be realized, and the separation and recovery efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chloroform distillation equipment, and specifically relates to an improvement on the structure of a chloroform recovery instrument. Background Art

[0002] In order to recover and reuse chloroform, it is usually necessary to recover chloroform from chloroform waste liquid through distillation equipment.

[0003] The existing chloroform recovery method mainly utilizes a distillation device to distill the chloroform waste liquid, and the distillation device comprises a flask and a condenser connected above the flask.

[0004] Since there is water in the chloroform waste liquid, chloroform and water are immiscible with each other, and since the density of chloroform is greater than that of water, chloroform will be below the water surface while water will be above it.

[0005] If the chloroform waste liquid is directly put into a flask for distillation, a large amount of water will be contained in the distilled chloroform during the distillation, resulting in a significant reduction in the purity of the extracted chloroform.

[0006] In order to ensure the purity of the distilled chloroform, the upper waste water is often removed manually before the chloroform is distilled, and then the remaining chloroform is manually introduced into a flask for heating and distillation, and the distilled chloroform will flow out for recovery.

[0007] The entire process of chloroform waste liquid recovery requires manual treatment of wastewater and then manual addition to the flask of the distillation device. Not only are the operating steps cumbersome and the separation and recovery efficiency low, but it also requires multiple manual interventions. Since chloroform is toxic, there are also safety hazards.

[0008] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0009] The utility model aims at the above-mentioned technical problems existing in the prior art of chloroform recovery and proposes a chloroform recovery instrument specially used for recovering chloroform, which can realize automatic liquid extraction and automatic distillation separation of chloroform, and the whole process does not require manual participation, which not only improves the separation and recovery efficiency but also effectively avoids the potential safety hazards caused by multiple manual participation.

[0010] In order to achieve the above utility model / design purpose, the utility model adopts the following technical solutions:

[0011] A chloroform recovery instrument, comprising:

[0012] A body, on which a receiving portion with a top opening is formed;

[0013] A heating component is arranged at the bottom of the receiving portion;

[0014] The supporting base is mounted at the bottom of the machine body.

[0015] The flask is pluggable with the supporting base, and a liquid inlet channel is formed between the flask and the supporting base;

[0016] A chloroform waste liquid placement container, used for containing chloroform waste liquid;

[0017] A liquid inlet pipeline, one end of which is connected to the liquid inlet channel and the other end of which is inserted below the liquid level of the chloroform waste liquid placement container;

[0018] A chloroform distillate bottle is used to receive the chloroform distillate, a tube interface portion connected to a sampling device or a collecting bottle is formed on the top of the bottle, and a weighing sensor is arranged at the bottom of the bottle;

[0019] A condensation bottle, one end of which is connected to the top of the flask, and the other end of which is connected to the chloroform distillate bottle, for condensing the chloroform distilled from the flask and refluxing it into the chloroform distillate bottle;

[0020] The first negative pressure diaphragm pump is connected to the condensation flask and is used to evacuate the flask.

[0021] In some embodiments of the present application, it also includes:

[0022] A chloroform distillate secondary collection bottle is connected to the pipe interface of the chloroform distillate bottle via a connecting pipeline, and the connecting pipeline is inserted below the liquid level of the chloroform distillate bottle;

[0023] The second negative pressure diaphragm pump is connected to the chloroform distillate secondary collection bottle and is used for extracting chloroform from the chloroform distillate bottle to the chloroform distillate secondary collection bottle.

[0024] In some embodiments of the present application, it also includes:

[0025] The sampling device is connected with the chloroform distillate bottle through a sampling pipeline. The sampling pipeline is inserted below the liquid level of the chloroform distillate bottle. A sampling pump is arranged on the sampling pipeline.

[0026] In some embodiments of the present application, a plug-in structure that cooperates with each other is provided between the flask and the supporting base, and the plug-in structure includes:

[0027] An insertion and extraction protrusion is formed at the bottom of the flask;

[0028] An insertion groove is formed on the supporting base, and a sealing component that seals with the insertion and extraction protrusion is arranged on the inner wall of the insertion groove.

[0029] In some embodiments of the present application, a distillation space is formed inside the flask, and a first channel is formed inside the plug-in protrusion;

[0030] The plug-in protrusion is inserted into the insertion slot and there is a distance between the insertion slot bottom surface and a second channel is formed between the insertion slot and the insertion protrusion, and the second channel is connected to the first channel;

[0031] A third channel arranged transversely is also provided on the supporting base, the third channel is communicated with the second channel, and the third channel, the second channel and the first channel constitute the liquid inlet channel.

[0032] In some embodiments of the present application, a plurality of the third channels are provided and arranged along the circumference of the supporting base, and the plurality of the third channels are all connected to the second channel.

[0033] In some embodiments of the present application, a liquid level detection sensor is provided on the side wall of the flask.

[0034] In some embodiments of the present application, a control unit is also included;

[0035] The first negative pressure diaphragm pump is equipped with a first stop valve, and the second negative pressure diaphragm pump is equipped with a second stop valve;

[0036] When the first negative pressure diaphragm pump is activated, the control unit controls the second stop valve to close;

[0037] When the second negative pressure diaphragm pump is activated, the control unit controls the first stop valve to close.

[0038] In some embodiments of the present application, the condensation bottle includes:

[0039] A first condensation interface portion is sealed and connected to the top of the flask through a first connecting pipe section;

[0040] The second condensation interface is connected to the chloroform distillate bottle.

[0041] In some embodiments of the present application, the supporting base includes:

[0042] a seat body and a protrusion formed from the seat body,

[0043] An inserting cavity for inserting the protruding portion is provided on the body, and the inserting cavity is communicated with the accommodating portion;

[0044] When the supporting seat body is inserted in place, the seat body is located at the bottom of the machine body, and the protrusion is flush with the bottom surface of the accommodating portion.

[0045] Compared with the prior art, the advantages and positive effects of the utility model are:

[0046] The utility model provides a liquid inlet pipeline inserted at a position below the liquid level of the chloroform waste liquid placement container, which can ensure that when the liquid inlet pump is activated, the chloroform liquid located at the bottom of the chloroform waste liquid placement container can be extracted, and the water above the liquid level of the chloroform waste liquid placement container will not be extracted into the flask;

[0047] The liquid inlet pipeline is located at the liquid surface of the chloroform waste liquid storage container and is combined with a liquid inlet peristaltic pump to avoid the step of manually removing the upper layer of waste water, thereby realizing direct extraction and distillation of chloroform liquid.

[0048] The utility model also improves the structure of the flask and the supporting base, arranges the flask and the supporting base into a plug-in structure, forms a liquid inlet channel between the flask and the supporting base, the liquid inlet channel is connected with the liquid inlet pipeline, and a liquid inlet pump is arranged, when chloroform is extracted, the chloroform can be automatically extracted into the liquid inlet channel by the liquid inlet pump, and then automatically transported to the inside of the flask through the liquid inlet channel, without manual chloroform liquid addition operation, realizes liquid addition automation, improves chloroform recovery efficiency and avoids safety problems that may be caused by manual participation.

[0049] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0051] Figure 1 It is a structural schematic diagram of an embodiment of the chloroform recovery instrument proposed by the utility model;

[0052] Figure 2 The utility model discloses a schematic diagram of the structure of a flask and a supporting base in cooperation with each other in one embodiment of a chloroform recovery device provided by the utility model.

[0053] In the figure, 100, machine body; 110, accommodating part; 120, insertion cavity; 200, heating component; 300, supporting base; 310, insertion groove; 320, sealing component; 330, seat body; 340, protrusion; 400, flask; 410, plug-in protrusion; 420, liquid level detection sensor; 500, liquid inlet channel; 600, chloroform waste liquid placement container; 710, liquid inlet pipeline; 510, first channel; 520, second channel; 530, third channel; 720, liquid inlet pump; 810, chloroform distillate bottle; 820, weighing sensor; 830, condensation bottle; 831, first condensation interface; 832, second condensation interface; 840, first negative pressure diaphragm pump; 850, chloroform distillate secondary collection bottle; 860, second negative pressure diaphragm pump; 900, control unit. DETAILED DESCRIPTION

[0054] 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.

[0055] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present invention.

[0056] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In the description of the implementation method, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0058] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0059] The utility model provides an embodiment of a chloroform recovery instrument, comprising:

[0060] A machine body 100, on which a receiving portion 110 with a top opening is formed;

[0061] The receiving portion 110 is a receiving groove formed on the body 100 and having an open top.

[0062] In some embodiments, the machine body 100 includes: a housing, which constitutes the outer shell of the entire machine body 100 and is used to support the entire chloroform recovery device. The housing can be made of metal.

[0063] A filling cavity is formed inside the casing, and a thermal insulation material is formed in the filling cavity. The thermal insulation material is ceramic fiber, and the thermal insulation material has a thermal insulation effect.

[0064] A heating component 200 is arranged at the bottom of the receiving portion 110;

[0065] In some embodiments, the heating component 200 is a heating film, which is attached to the bottom surface of the receiving tank and is used to heat the component placed in the receiving tank.

[0066] In some embodiments, the heating component 200 is a heating plate, which is mounted on the bottom surface of the receiving groove and can also achieve a heating function.

[0067] The supporting base 300 is assembled at the bottom of the body 100 , and the supporting base 300 is inserted into the body 100 from the bottom surface of the body 100 .

[0068] After the supporting base 300 is inserted into place, it is located at the bottom surface of the body 100 .

[0069] The flask 400 is pluggable with the supporting base 300, and a liquid inlet channel 500 is formed between the flask 400 and the supporting base 300;

[0070] In some embodiments, the flask 400 is placed in the receiving portion 110 of the body 100, and its bottom surface is located on the top surface of the heating component 200. The heating component 200 can heat and distill the chloroform in the flask 400.

[0071] The flask 400 is inserted into the supporting base 300 and connected to the supporting base 300 in a plug-in manner, so that the flask 400 can be easily disassembled, replaced and transported.

[0072] Since the flask 400 and the supporting base 300 are plug-in matched, when the distillation flask 400 needs to be thoroughly cleaned, the distillation flask 400 can be pulled out to conveniently perform thorough cleaning;

[0073] The flask 400 and the supporting base 300 are plug-in compatible. When in use, flasks 400 of different types can be plug-in inserted into the supporting base 300, so that it can be adapted to flasks 400 of different volumes and has strong versatility.

[0074] A liquid inlet channel 500 is formed between the supporting base 300 and the flask 400. When a sample needs to be added into the flask 400, the sample can be added directly into the flask 400 through the liquid inlet channel 500 between the supporting base 300 and the flask 400, making the sample adding operation more convenient.

[0075] A chloroform waste liquid placement container 600 is used to hold the chloroform waste liquid;

[0076] In some embodiments, the chloroform waste liquid placement container 600 is a chloroform waste liquid placement bottle, in which the chloroform waste liquid to be recycled is placed.

[0077] A liquid inlet pipeline 710, one end of which is connected to the liquid inlet channel 500, and one end of which is inserted below the liquid level of the chloroform waste liquid storage container 600;

[0078] The liquid inlet pipeline 710 is a liquid inlet pipe, one end of which is connected to the liquid inlet channel 500 and the other end is inserted below the liquid surface of the chloroform waste liquid container 600, and can be used to transport the chloroform in the chloroform waste liquid container 600 to the liquid inlet channel 500.

[0079] The liquid inlet pump 720 is connected to the liquid inlet pipeline 710 and is used to suck the chloroform in the chloroform waste liquid storage container 600 into the liquid inlet channel 500.

[0080] In some embodiments, the inlet pump 720 is an inlet peristaltic pump.

[0081] There will be water in the chloroform waste liquid used for recycling. Chloroform and water are insoluble in each other. Therefore, chloroform will be located below the water surface, while the water in chloroform will float on the liquid surface.

[0082] In this embodiment, the liquid inlet pipeline 710 is inserted below the liquid level of the chloroform waste liquid container 600, which can ensure that when the liquid inlet peristaltic pump is activated, the chloroform liquid located at the bottom of the chloroform waste liquid container 600 is extracted, and the water above the liquid level of the chloroform waste liquid container 600 will not be extracted into the flask 400.

[0083] The liquid inlet pipeline 710 is located at the liquid surface of the chloroform waste liquid storage container 600 and cooperates with the liquid inlet peristaltic pump to avoid the step of manually removing the upper layer of waste water, thereby realizing direct extraction and distillation of chloroform liquid.

[0084] A chloroform distillate bottle 810 is used to receive the chloroform distillate, a tube interface portion connected to a sampling device or a collecting bottle is formed on the top thereof, and a weighing sensor 820 is arranged at the bottom thereof;

[0085] A condensation bottle 830, one end of which is connected to the top of the flask 400, and the other end of which is connected to the chloroform distillate bottle 810, for condensing the chloroform distilled from the flask 400 and refluxing it into the chloroform distillate bottle 810;

[0086] In some embodiments of the present application, a water circulation cooling system is provided on the outside of the condensation bottle 830 to cool the distilled chloroform in the condensation bottle 830 .

[0087] The water circulation cooling system can directly adopt the cooling system structure in the prior art, which will not be described in detail here.

[0088] The chloroform distilled by heating in the flask 400 will enter the condensation bottle 830 , and the distilled chloroform will flow into the chloroform distillate bottle 810 through the condensation effect of the condensation bottle 830 .

[0089] The weight of the distilled chloroform can be measured by a weighing sensor 820 arranged at the bottom of the chloroform.

[0090] In some embodiments of the present application, a first negative pressure diaphragm pump 840 is further provided, which is connected to the condensation bottle 830 and is used to evacuate the flask 400 .

[0091] By evacuating the flask 400 through the first negative pressure diaphragm pump 840, the negative pressure inside the flask 400 can be reduced, thereby lowering the boiling point of the chloroform inside the flask 400, so that the chloroform distilled inside the flask 400 can quickly reach the boiling point temperature, thereby achieving the effect of rapid distillation of chloroform and improving the distillation efficiency.

[0092] In some embodiments of the present application, it also includes:

[0093] The chloroform distillate secondary collection bottle 850 is connected to the pipe interface of the chloroform distillate bottle 810 through a connecting pipe, and the connecting pipe is inserted below the liquid level of the chloroform distillate bottle 810;

[0094] The second negative pressure diaphragm pump 860 is connected to the chloroform distillate secondary collection bottle 850 and is used to extract chloroform from the chloroform distillate bottle 810 to the chloroform distillate secondary collection bottle 850 .

[0095] The chloroform distilled from the flask 400 enters the chloroform distillate cup, but there is still a little water floating above the pure chloroform inside the chloroform after the preliminary distillation. In order to further improve the purity of the extracted chloroform, a secondary collection bottle 850 for the chloroform distillate is set.

[0096] A connecting pipe is connected between the chloroform distillate secondary collection bottle 850 and the chloroform distillate bottle 810 , and the connecting pipe is inserted below the liquid level of the chloroform distillate bottle 810 .

[0097] The second negative pressure diaphragm pump 860 is activated to generate negative pressure, and the chloroform in the chloroform distillate bottle 810 is drawn into the chloroform distillate secondary collection bottle 850 .

[0098] Since the connecting pipeline is below the liquid level of the chloroform distillate bottle 810, it is ensured that what is extracted into the chloroform distillate secondary collection bottle 850 is pure chloroform rather than water floating on the liquid surface. Through secondary separation, the purity of the chloroform extracted into the chloroform distillate secondary collection bottle 850 is guaranteed.

[0099] In some embodiments of the present application, it also includes:

[0100] The sampling device is connected to the chloroform distillate bottle 810 via a sampling pipeline. The sampling pipeline is inserted below the liquid level of the chloroform distillate bottle 810. A sampling pump is provided on the sampling pipeline.

[0101] The chloroform distillate bottle 810 can also be connected to the pipeline through the pipe interface, and the equipment can directly extract the distilled chloroform through the pipeline for analysis.

[0102] In some embodiments of the present application, in order to achieve the plug-in cooperation between the flask 400 and the supporting base 300 , a plug-in structure that cooperates with each other is provided between the flask 400 and the supporting base 300 .

[0103] The plug-in structure includes:

[0104] The plug-in protrusion 410 is formed at the bottom of the flask 400;

[0105] The insertion groove 310 is formed on the supporting base 300 , and a sealing component 320 is provided on the inner wall of the insertion groove 310 to seal with the insertion protrusion 410 .

[0106] In some embodiments, the sealing component 320 is a sealing ring, and an annular mounting groove is provided on the supporting base 300, and the sealing ring is assembled in the annular mounting groove.

[0107] When installing, the flask 400 is inserted into the insertion groove 310 by inserting and pulling out the protrusion 410, and the sealing ring is squeezed to form a sealed connection with the supporting base 300.

[0108] In some embodiments of the present application, a distillation space is formed inside the flask 400, and a first channel 510 is formed inside the plug-in protrusion;

[0109] The plug-in protrusion 410 is inserted into the insertion groove 310 and has a distance between it and the bottom surface of the insertion groove 310. A second channel 520 is formed between the insertion groove 310 and the plug-in protrusion 410. The plug-in protrusion 410 is arranged to have a distance between it and the bottom surface of the insertion groove 310, which can prevent the plug-in protrusion 410 of the flask 400 from directly contacting the bottom wall of the insertion groove 310 during the insertion process, and the two are damaged by hard contact and collision.

[0110] The second channel 520 is in communication with the first channel 510;

[0111] A third channel 530 arranged transversely is also provided on the supporting base 300 . The third channel 530 is communicated with the second channel 520 . The third channel 530 , the second channel 520 and the first channel 510 constitute the liquid inlet channel 500 .

[0112] In some embodiments of the present application, a plurality of the third channels 530 are provided and arranged along the circumference of the supporting base 300 , and the plurality of the third channels 530 are all connected to the second channel 520 .

[0113] By providing a plurality of third channels 530 , the third channels 530 can be connected to a plurality of waste liquid collection bottles for extraction.

[0114] The chloroform extracted from the chloroform waste liquid storage container 600 will first enter the third channel 530 , then enter the second channel 520 , and finally enter the interior of the flask 400 through the first channel 510 .

[0115] In the chloroform recovery apparatus of this embodiment, the structures of the flask 400 and the supporting base 300 are improved, a plug-in protrusion is provided on the flask 400, a plug-in groove 310 is provided on the supporting base 300, and a third channel 530 is correspondingly provided on the supporting base 300, so that when the flask 400 is plugged into the supporting base 300, the internal spaces of the supporting base 300 and the flask 400 are connected to each other.

[0116] When adding chloroform waste liquid into the flask 400, the chloroform can be automatically pumped into the flask 400 directly through the liquid inlet channel 500 by the liquid inlet pump 720, without manual liquid addition operation, thus realizing automatic liquid addition, improving the efficiency of distillation recovery, and also avoiding the problem of poor safety caused by multiple participation of manual liquid addition and water extraction;

[0117] When the flask 400 needs to be cleaned, there is no need to remove the flask 400 so that it can always remain connected to the condenser. It is only necessary to connect the clean water container through the liquid inlet pump 720 and the liquid inlet pipeline 710, and pump the clean water into the flask 400 through the liquid inlet channel 500 at the bottom of the flask 400, so as to clean the flask 400. This avoids the steps of manually taking and placing the beaker many times, cleaning the beaker, and frequently adding cleaning reagents during the continuous distillation process, thereby saving a lot of manpower and material resources and improving the recovery efficiency.

[0118] In some embodiments of the present application, a liquid level detection sensor 420 is installed on the side wall of the flask 400 .

[0119] The liquid level detection sensor 420 can accurately detect the amount of chloroform in the flask 400 , and the added chloroform is quantitatively measured through the liquid level detection sensor 420 .

[0120] In some embodiments of the present application, a control unit 900 is also included;

[0121] The first negative pressure diaphragm pump 840 is equipped with a first stop valve, and the second negative pressure diaphragm pump 860 is equipped with a second stop valve;

[0122] When the first negative pressure diaphragm pump 840 is in operation, the control unit 900 controls the second stop valve to close;

[0123] When the second negative pressure diaphragm pump 860 is activated, the control unit 900 controls the first stop valve to close.

[0124] In some embodiments of the present application, the condensation bottle 830 includes:

[0125] The first condensation interface portion 831 is sealed and connected to the top of the flask 400 through a first connecting pipe segment;

[0126] The second condensation interface part 832 is connected to the chloroform distillate bottle 810.

[0127] In some embodiments of the present application, the supporting base 300 includes:

[0128] The seat body 330 and the protrusion 340 formed from the seat body 330,

[0129] The body 100 is provided with an insertion cavity 120 for inserting the protrusion 340 , and the insertion cavity 120 is communicated with the accommodation portion 110 ;

[0130] The insertion cavity 120 extends upward from the bottom of the body 100 to the accommodating portion 110 .

[0131] When the supporting seat body is inserted into place, the seat body 330 is located at the bottom of the machine body 100 , and the protrusion 340 is flush with the bottom surface of the accommodating portion 110 .

[0132] The outer diameter of the protrusion 340 is smaller than that of the seat body 330 . The protrusion 340 is inserted into the insertion cavity 120 , and the seat body 330 is supported below the machine body 100 .

[0133] The raised portion 340 is flush with the bottom surface of the receiving portion 110 , so as to ensure that the flask 400 placed in the receiving portion 110 will not tilt.

[0134] The liquid inlet pipeline 710 of the utility model is inserted below the liquid level of the chloroform waste liquid placement container 600, which can ensure that when the liquid inlet pump 720 is activated, the chloroform liquid located at the bottom of the chloroform waste liquid placement container 600 can be extracted, and the water above the liquid level of the chloroform waste liquid placement container 600 will not be extracted into the flask 400;

[0135] The liquid inlet pipeline 710 is located at the liquid surface of the chloroform waste liquid storage container 600 and cooperates with the liquid inlet peristaltic pump to avoid the step of manually removing the upper layer of waste water, thereby realizing direct extraction and distillation of chloroform liquid;

[0136] The utility model also improves the structure of the flask 400 and the supporting base 300, and sets the flask 400 and the supporting base 300 into a plug-in structure, and forms a liquid inlet channel 500 between the flask 400 and the supporting base 300, the liquid inlet channel 500 is connected to the liquid inlet pipeline 710, and a liquid inlet pump 720 is provided. When chloroform is extracted, the chloroform can be automatically extracted into the liquid inlet channel 500 by the liquid inlet pump 720, and then automatically transported to the inside of the flask 400 through the liquid inlet channel 500, without manual chloroform liquid addition operation, thus realizing liquid addition automation, improving chloroform recovery efficiency and avoiding safety problems that may be caused by manual participation.

[0137] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A chloroform recovery instrument, characterized in that, Included are: A body, on which a receiving portion with a top opening is formed; A heating component is arranged at the bottom of the receiving portion; A supporting base, mounted at the bottom of the machine body; The flask is pluggable with the supporting base, and a liquid inlet channel is formed between the flask and the supporting base; A chloroform waste liquid placement container, used for containing chloroform waste liquid; A liquid inlet pipeline, one end of which is connected to the liquid inlet channel and the other end of which is inserted below the liquid level of the chloroform waste liquid placement container; A liquid inlet pump, connected to the liquid inlet pipeline, is used to extract chloroform from the chloroform waste liquid storage container into the flask; A chloroform distillate bottle is used to receive the chloroform distillate, a tube interface portion connected to a sampling device or a collecting bottle is formed on the top of the bottle, and a weighing sensor is arranged at the bottom of the bottle; A condensation bottle, one end of which is connected to the top of the flask, and the other end of which is connected to the chloroform distillate bottle, for condensing the chloroform distilled from the flask so as to reflux it into the chloroform distillate bottle; The first negative pressure diaphragm pump is connected to the condensation flask and is used to evacuate the flask.

2. Chloroform recovery instrument according to claim 1, is characterized in that, Also included are: A chloroform distillate secondary collection bottle is connected to the pipe interface of the chloroform distillate bottle via a connecting pipeline, and the connecting pipeline is inserted below the liquid level of the chloroform distillate bottle; The second negative pressure diaphragm pump is connected to the chloroform distillate secondary collection bottle and is used for extracting chloroform from the chloroform distillate bottle to the chloroform distillate secondary collection bottle.

3. Chloroform recovery instrument according to claim 1, is characterized in that, Also included are: The sampling device is connected with the chloroform distillate bottle through a sampling pipeline. The sampling pipeline is inserted below the liquid level of the chloroform distillate bottle. A sampling pump is arranged on the sampling pipeline.

4. Chloroform recovery instrument according to claim 1, is characterized in that, A plug-in structure that cooperates with each other is provided between the flask and the supporting base, and the plug-in structure includes: An insertion and extraction protrusion is formed at the bottom of the flask; An insertion groove is formed on the supporting base, and a sealing component that seals with the insertion and extraction protrusion is arranged on the inner wall of the insertion groove.

5. Chloroform recovery instrument according to claim 4, is characterized in that, A distillation space is formed inside the flask, and a first channel is formed inside the plug-in protrusion; The plug-in protrusion is inserted into the insertion slot and there is a distance between the insertion slot bottom surface and a second channel is formed between the insertion slot and the plug-in protrusion, and the second channel is connected to the first channel; A third channel arranged transversely is also provided on the supporting base, the third channel is communicated with the second channel, and the third channel, the second channel and the first channel constitute the liquid inlet channel.

6. Chloroform recovery instrument according to claim 5, is characterized in that, A plurality of the third channels are provided and arranged along the circumference of the supporting base, and the plurality of the third channels are all connected to the second channel.

7. Chloroform recovery instrument according to claim 1, is characterized in that, A liquid level detection sensor is arranged on the side wall of the flask.

8. Chloroform recovery instrument according to claim 1, is characterized in that, Also includes a control unit; The first negative pressure diaphragm pump is equipped with a first stop valve, and the second negative pressure diaphragm pump is equipped with a second stop valve; When the first negative pressure diaphragm pump is activated, the control unit controls the second stop valve to close; When the second negative pressure diaphragm pump is activated, the control unit controls the first stop valve to close.

9. Chloroform recovery instrument according to claim 1, is characterized in that, The condensation bottle includes: A first condensation interface portion is sealed and connected to the top of the flask through a first connecting pipe section; The second condensation interface is connected to the chloroform distillate bottle.

10. Chloroform recovery instrument according to claim 1, characterized in that, The supporting base comprises: a seat body and a raised portion formed from the seat body; An inserting cavity for inserting the protruding portion is provided on the body, and the inserting cavity is communicated with the accommodating portion; When the supporting seat body is inserted in place, the seat body is located at the bottom of the machine body, and the protrusion is flush with the bottom surface of the accommodating portion.

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