Heavy metal detection device and its application in the production of Taibai Fritillaria wall-broken slices

Abstract

The present invention discloses a heavy metal detection device and its application in the production of Taibai Fritillaria wall-broken slices, and relates to the field of heavy metal detection technology. The device includes a shell and a container, and the device also includes: an adjusting part, the adjusting part is arranged at one end of the container close to the mixing part, the adjusting part includes a first filter element and a second filter element, and the first filter element is arranged in the container. The present invention cooperates with each other through the mixing part and the adjusting part, on the one hand, through the movement of the first filter element and the second filter element, the sample solution and the color developer are mixed multiple times, thereby improving the mixing effect of the sample solution and the color developer. On the other hand, through the setting of the telescopic part, the device can add different amounts of the developer to different containers at the same time and cooperate with light detection to obtain multiple groups of detection data, thereby avoiding the problem of unclear display effect caused by excessive or small amounts of the developer.

Description

Technical Field

[0001] The invention relates to the technical field of heavy metal detection, in particular to a heavy metal detection device and application thereof in the production of Taibai Fritillaria wall-broken medicinal slices. Background Art

[0002] Heavy metal detection device is a device specially used to detect the heavy metal content in samples. It plays a pivotal role in the quality control of Chinese herbal medicines. With the global development of traditional Chinese medicine, it is particularly important to ensure that Chinese herbal medicines meet international standards. Heavy metal detection has become a key link in the quality inspection of Chinese herbal medicines. Among them, Taibai Fritillaria thunbergii is a traditional Chinese herbal medicine with a long history. In the production of broken wall slices, its raw materials may be polluted by the environment, resulting in excessive heavy metal content. Therefore, in the production process of Taibai Fritillaria thunbergii broken wall slices, it is very important to use heavy metal detection devices for real-time monitoring to ensure the safety of medicinal materials.

[0003] A Chinese patent with application number 2021116358469 discloses an intelligent detection device for residual heavy metals in Chinese herbal medicines, including a sampling cylinder; a fluorescent detection box and a reagent kit are fixedly connected to one side of the sampling cylinder; a grinding tank and a grinding and stirring mechanism are provided inside the sampling cylinder; a sampling tube is connected to one side of the grinding tank through an electromagnetic valve; a reagent tube is provided inside the sampling cylinder; a moving mechanism is installed at the bottom of the sampling cylinder; a sampling cup is provided on the top of the moving mechanism; the Chinese herbal medicines are crushed by the grinding and stirring mechanism, clean water is added, and the Chinese herbal medicine powder and water are mixed evenly, the electromagnetic valve is opened, and the Chinese herbal medicine solution inside the grinding tank enters the sampling cup. The equipment integrates the functions of grinding, stirring, sampling, and detection, thereby improving the work efficiency of detecting Chinese herbal medicines.

[0004] The Chinese patent application number 2023100722187 discloses a heavy metal detection device for edible fungi, which relates to the technical field of detection equipment, including a base plate, a guide rod is fixed on the top of the base plate, the top of the dynamic pressure connecting plate is rotatably connected to the inner hollow sleeve through a bearing, and the top of the dynamic pressure connecting plate is provided with a U-shaped top support frame located on the outside of the inner hollow sleeve. The invention sets a shock liquid flow position component. When the inner hollow sleeve is not buckled on the top of the sample tube, the active plug at this time will block the inner side of the special-shaped liquid discharge bin, thereby blocking the strong acid solution in the liquid storage bin, preventing the strong acid from dripping prematurely due to accidental contact with the dial ring when the center connecting tube does not enter the sample tube, thereby increasing the safety of the equipment.

[0005] Similar to the above-mentioned prior art, when heavy metal detection is performed on Taibai Fritillaria wall-broken slices by ultraviolet-visible spectrophotometer, the color developer needs to be added to the sample in batches for reaction, so as to control the reaction process and optimize the conditions of the complexation reaction, improve the accuracy of the detection, make the color development process more stable and sufficient, and enhance the color development effect. However, due to differences in sample properties and the reaction between the sample and the color developer is affected by factors such as temperature and degree of mixing, if an excessive amount of color developer is added, additional absorption peaks or baseline drifts will be introduced, interfering with the absorption spectrum of the heavy metal to be measured, making the measurement result inaccurate; if a small amount of color developer is added, the complexation reaction between the heavy metal ions and the color developer will be incomplete, and the amount of colored compounds generated will be insufficient, resulting in low absorbance, affecting the accuracy of the detection result. Since this process is mostly manual, the prior art lacks equipment that can accurately adjust the amount of the color developer and the sample solution in real time according to the color development reaction of the sample.

[0006] Moreover, when the sample solution is detected by the device, the initial stirring will cause the solution surface to shake, and the shaking of the liquid surface will cause the light to be scattered and reflected when passing through the sample solution, which will make part of the light unable to be received by the detector, thereby affecting the accuracy of the measurement results. If no stirring is performed, the mixing effect of the sample solution and the color developer will be deteriorated, which will also affect the accuracy of the measurement results.

[0007] At the same time, after the test is completed, when the sample container is cleaned, the human eye cannot directly observe the trace heavy metals and color developer residues in the sample container, which may easily lead to the sample container being unable to be effectively cleaned, affecting the secondary test.

[0008] Therefore, it is necessary to invent a heavy metal detection device and its application in the production of Taibai Fritillaria wall-broken medicinal slices to solve the above-mentioned problems. Summary of the invention

[0009] The object of the present invention is to provide a heavy metal detection device and its application in the production of Taibai Fritillaria wall-broken medicinal slices, so as to solve the problems raised in the above-mentioned background technology.

[0010] To achieve the above object, the present invention provides the following technical solution: a heavy metal detection device, comprising a housing and a container, the heavy metal detection device also comprising:

[0011] A darkroom, the darkroom being arranged on one side of the housing, and having a light inlet and a light outlet respectively formed on two opposite sides of the darkroom;

[0012] A mixing unit, which is arranged in a dark room and can mix sample solutions and color developers in multiple containers at the same time, and allow solutions with different proportions to enter corresponding containers;

[0013] An adjusting part, wherein the adjusting part is arranged at one end of the container close to the mixing part, and the adjusting part comprises a first filter element and a second filter element, wherein the first filter element is arranged in the container, the second filter element is sleeved in the first filter element, and the filter holes on the first filter element and the second filter element can be displaced and overlapped according to the sliding of the second filter element, and the adjusting part can cooperate with the mixing part to achieve mixing of the sample solution and the color developer, and keep the liquid level in the container stable.

[0014] Preferably, a partition is provided in the middle of the inner cavity of the darkroom, one side of the partition is connected to a plurality of containers, and the other side of the partition is provided with a mixing section and a storage section, the storage section is filled with a color developer, and the storage section can deliver the color developer into the mixing section by suction from the mixing section.

[0015] Preferably, the mixing section includes a mixing bin, a telescopic cylinder is provided on the side of the mixing bin away from the partition, a pushing member is fixedly connected to the telescopic end of the telescopic cylinder, the pushing member can seal and slide in the mixing bin according to the telescopic movement of the telescopic cylinder, telescopic tubes are provided in a linear array on the pushing member, a limit member is provided at one end of the telescopic tube away from the pushing member, and a plurality of the limit members correspond one-to-one to the containers.

[0016] Preferably, the regulating part also includes a sealing member, which is arranged at one end of the container close to the mixing part, and the sealing member can cooperate with the limiting member to seal one end of the container, the outer side of the sealing member is fixedly connected to the first filter element, and a return spring is provided at the end of the sealing member away from the limit member, and the second filter element is connected to the limit member through the return spring.

[0017] Preferably, the side of the seal close to the limit member is inclined, and the opening of the seal on the side away from the partition is smaller than the opening on the side close to the partition, and the side of the seal close to the limit member is provided with a plurality of electrically controlled telescopic parts in a circular array, and the end of the limit member close to the seal is provided with a plurality of sockets in a circular array, and the telescopic parts can be extended into different sockets to limit the limit member.

[0018] Preferably, a light source unit is also provided in the shell, and the light source unit includes a tritium lamp capable of emitting high-intensity ultraviolet rays and visible light and a halogen tungsten lamp capable of emitting visible light. The light source unit also includes a conversion mechanism provided between the tritium lamp and the halogen tungsten lamp, and the conversion mechanism can make the light emitted by the tritium lamp or the halogen tungsten lamp radiate outward.

[0019] Preferably, a dimming unit is further provided in the housing, and the dimming unit includes a rotatable grating, and the dimming unit can disperse the light emitted by the light source unit through the grating and emit the light toward the dark room.

[0020] Preferably, a photoelectric detection unit is further provided in the housing, the photoelectric detection unit is connected to the light outlet, and the photoelectric detection unit can convert the collected light signal into an electrical signal.

[0021] Preferably, a control unit, a display unit and a cover plate are also provided in the shell. The control unit is electrically connected to the light source unit, the dimming unit and the photoelectric detection unit. The control unit can process the electrical signal and transmit it to the display unit. The cover plate can close the darkroom to create a dark environment. A heating unit is also provided in the darkroom, and the heating unit can heat up or cool down the mixed solution in the container.

[0022] The present invention also provides an application of the heavy metal detection device as described above in the production of Taibai Fritillaria wall-broken medicinal slices.

[0023] Technical effects and advantages of the present invention:

[0024] 1. The present invention cooperates with the mixing part and the regulating part, on the one hand, through the movement of the first filter element and the second filter element, to achieve multiple mixing of the sample solution and the developer, thereby improving the mixing effect of the sample solution and the developer. On the other hand, through the setting of the telescopic part, the device can add different amounts of developer to different containers at the same time and cooperate with light detection to obtain multiple groups of detection data, thereby avoiding the problem of unclear display effect caused by excessive or small amount of developer.

[0025] 2. The present invention can adjust the fluctuating solution level in the container through the cooperation of the telescopic parts and the pushing parts, thereby improving the detection accuracy. On the other hand, the container can be sealed and opened by making the pushing parts move back and forth, which is convenient for mixing the previous solution and cleaning the subsequent container. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a schematic diagram of the internal structure of the shell of the present invention.

[0028] Figure 3 It is a front view schematic diagram of the overall structure of the present invention.

[0029] Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at AA in the middle.

[0030] Figure 5 For the present invention Figure 4 Schematic diagram of the mechanism structure at A in the middle.

[0031] Figure 6 It is a schematic diagram of the explosion structure of the regulating part of the present invention.

[0032] In the figure: 1. Shell; 11. Light source unit; 12. Dimming unit; 13. Photoelectric detection unit; 14. Control unit; 15. Display unit; 16. Cover plate; 2. Darkroom; 3. Light inlet; 4. Light outlet; 5. Container; 6. Partition; 7. Mixing unit; 71. Mixing bin; 72. Telescopic cylinder; 73. Pushing member; 74. Limiting member; 75. Socket; 8. Storage unit; 9. Adjusting unit; 91. First filter element; 92. Second filter element; 93. Sealing member; 94. Telescopic member. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] To improve the detection accuracy of heavy metals, Figure 1 - Figure 6 As shown, in a first embodiment of the present invention, a heavy metal detection device is provided, comprising a housing 1 and a container 5, the heavy metal detection device further comprising:

[0035] The darkroom 2 is arranged at one side of the housing 1 , and a light inlet 3 and a light outlet 4 are respectively provided on two opposite sides of the darkroom 2 .

[0036] In this embodiment, a light source unit 11 is further provided in the shell 1. The light source unit 11 includes a tritium lamp capable of emitting high-intensity ultraviolet rays and visible light and a halogen tungsten lamp capable of emitting visible light. The light source unit 11 also includes a conversion mechanism arranged between the tritium lamp and the halogen tungsten lamp. The conversion mechanism can make the light emitted by the tritium lamp or the halogen tungsten lamp radiate outward.

[0037] In this embodiment, a dimming unit 12 is further disposed in the housing 1 . The dimming unit 12 includes a rotatable grating. The dimming unit 12 can disperse the light emitted by the light source unit 11 through the grating and emit the light toward the darkroom 2 .

[0038] In this embodiment, a photoelectric detection unit 13 is further provided in the housing 1 . The photoelectric detection unit 13 is connected to the light outlet 4 . The photoelectric detection unit 13 can convert the collected light signal into an electrical signal.

[0039] In this embodiment, a control unit 14, a display unit 15 and a cover plate 16 are further provided in the shell 1. The control unit 14 is electrically connected to the light source unit 11, the dimming unit 12 and the photoelectric detection unit 13. The control unit 14 can process electrical signals and transmit them to the display unit 15. The cover plate 16 can close the darkroom 2 to create a dark environment. A heating unit is also provided in the darkroom 2, and the heating unit can heat up or cool down the mixed solution in the container 5.

[0040] In this embodiment, the present invention also provides the application of the heavy metal detection device in the production of Taibai Fritillaria wall-broken medicinal slices.

[0041] When in use, the broken wall slices of Fritillaria taibaiensis are ground, and clean water is added to the broken wall slice powder for soaking, and then the impurities in the mixed solution of the broken wall slices of Fritillaria taibaiensis are filtered through a filter to obtain a sample solution, the sample solution is added into a container 5, and a color developer is added to the sample solution in batches for stirring to mix the sample solution and the color developer, the mixed container 5 is placed in a dark room 2, and the container 5 is completely in a dark state through a cover plate 16 to reduce light interference, and an instruction is sent to the control part 14 through the display part 15 to make the light source part 11 send a detection light source to the dimming part 12, and the detection light source is adjusted by the dimming part 12 to enter the dark room 2 through the light inlet 3 and irradiate the mixed solution in the container 5, and when the detection light source passes through the container 5 and irradiates the light outlet 4, the photoelectric detection part 13 arranged at one end of the light outlet 4 converts the detected light signal into an electrical signal, thereby obtaining whether the heavy metal content in the broken wall slices of Fritillaria taibaiensis meets the standard.

[0042] However, in the actual operation process, the operator found that when using the device to detect heavy metals in the broken wall slices of Taibai Fritillaria, the color developer needs to be added to the sample in batches for reaction, so as to control the reaction process, optimize the conditions of the complexation reaction, improve the accuracy of the detection, make the color development process more stable and sufficient, and enhance the color development effect. However, due to the differences in sample properties and the reaction between the sample and the color developer is affected by factors such as temperature and mixing degree, if the color developer is added in excess, it will lead to the introduction of additional absorption peaks or baseline drift, which will interfere with the absorption spectrum of the heavy metal to be measured and make the measurement result inaccurate; if the color developer is added in small amounts, the complexation reaction between the heavy metal ions and the color developer will be incomplete, and the generated colored compounds will be Insufficient material volume results in low absorbance, affecting the accuracy of the test results; and when the sample solution is tested by the device, the initial stirring will cause the solution surface to shake, and the shaking of the liquid surface will cause the light to be scattered and reflected when passing through the sample solution, which will make part of the light unable to be received by the detector, thereby affecting the accuracy of the measurement results. If no stirring is performed, the mixing effect of the sample solution and the color developer will be deteriorated, which will also affect the accuracy of the measurement results. At the same time, when the test is completed, when cleaning the container 5, since the human eye cannot directly observe the trace heavy metals and color developer residues in the container 5, it is easy to cause the container 5 to be unable to be effectively cleaned, affecting the problem of secondary detection.

[0043] Therefore, in order to solve the above technical problem, in another embodiment of the present invention, the device further includes:

[0044] The mixing unit 7 is disposed in the darkroom 2 . The mixing unit 7 can mix the sample solutions and the color developing agents in the plurality of containers 5 at the same time, and allow solutions with different proportions to enter the corresponding containers 5 .

[0045] The regulating part 9 is arranged at one end of the container 5 close to the mixing part 7. The regulating part 9 includes a first filter element 91 and a second filter element 92. The first filter element 91 is arranged in the container 5, and the second filter element 92 is sleeved in the first filter element 91. The filter holes on the first filter element 91 and the second filter element 92 can be displaced and overlapped according to the sliding of the second filter element 92. The regulating part 9 can cooperate with the mixing part 7 to achieve mixing of the sample solution and the color developer, and keep the liquid level in the container 5 stable.

[0046] In this embodiment, a partition 6 is provided in the middle of the inner cavity of the darkroom 2, one side of the partition 6 is connected to a plurality of containers 5, and the other side of the partition 6 is provided with a mixing section 7 and a storage section 8. The storage section 8 is filled with a color developer, and the storage section 8 can deliver the color developer into the mixing section 7 through suction of the mixing section 7.

[0047] In this embodiment, the mixing section 7 includes a mixing chamber 71, and a telescopic cylinder 72 is provided on the side of the mixing chamber 71 away from the partition 6. A pushing member 73 is fixedly connected to the telescopic end of the telescopic cylinder 72. The pushing member 73 can perform sealing sliding in the mixing chamber 71 according to the telescopic movement of the telescopic cylinder 72. Telescopic tubes are provided in a linear array on the pushing member 73. A limit member 74 is provided at the end of the telescopic tube away from the pushing member 73, and the multiple limit members 74 correspond one by one to the containers 5.

[0048] In this embodiment, the adjusting part 9 also includes a sealing member 93, which is arranged at one end of the container 5 close to the mixing part 7. The sealing member 93 can cooperate with the limiting member 74 to seal one end of the container 5. The outer side of the sealing member 93 is fixedly connected to the first filter element 91. A return spring is provided at the end of the sealing member 93 away from the limit member 74, and the second filter element 92 is connected to the limit member 74 through the return spring.

[0049] In this embodiment, the side of the sealing member 93 close to the limit member 74 is inclined, and the opening of the sealing member 93 on the side away from the partition 6 is smaller than the opening on the side close to the partition 6. The side of the sealing member 93 close to the limit member 74 is provided with a plurality of electrically controlled telescopic members 94 in a circular array, and the end of the limit member 74 close to the sealing member 93 is provided with a plurality of sockets 75 in a circular array. The telescopic members 94 can extend into different sockets 75 to limit the limit member 74.

[0050] During use, when it is necessary to mix the developer with the sample solution, the sample solution is added into the container 5, and then the control unit 14 controls the telescopic cylinder 72 to retract in the direction away from the container 5. In this state, since the telescopic member 94 remains in the retracted state and does not contact the limiting member 74, the limiting member 74 can move with the movement of the pushing member 73. Since the pushing member 73 and the mixing chamber 71 are in a sealed sliding connection, the pushing member 73 can form a negative pressure in the side of the mixing chamber 71 that is connected to the container 5 during the movement, thereby adsorbing the sample solution in the container 5 into the mixing chamber 71. At the same time, due to the first filter element 91 and the second filter element 92, the mixing chamber 71 is connected to the mixing chamber 71. The filter elements 92 are slidably connected, so under the action of negative pressure, the second filter element 92 can slide on the first filter element 91. When the filter holes on the second filter element 92 and the first filter element 91 overlap, the sample solution in the container 5 can enter the mixing chamber 71. When the filter holes on the second filter element 92 and the first filter element 91 are staggered from each other, the sample solution in the container 5 cannot enter the mixing chamber 71. Since the pushing member 73 remains in a moving state, the color developer in the storage portion 8 can be sucked into the mixing chamber 71 through the one-way valve under the action of negative pressure, and is mixed with the sample solution in the first order, thereby adding the color developer to the sample solution and mixing them.

[0051] Secondly, when it is necessary to deliver the mixed solution that has completed the first-order mixing into different containers 5, the control unit 14 controls the telescopic cylinder 72 to move in the direction close to the container 5. In this state, the mixed solution in the mixing chamber 71 can be moved to different containers 5 through the first filter element 91 and the second filter element 92. At this time, the mixed solution is pressurized when entering the container 5 through the setting of the first filter element 91 and the second filter element 92, so that it is sprayed into the container 5, and the mixed solution is heated in conjunction with the heating unit to achieve secondary mixing of the mixed solution and further improve the mixing effect.

[0052] In order to improve the accuracy of detection and avoid the problem of too little or too much color developer in the sample solution, after the mixed solution is sent into the container 5, the control unit 14 controls the telescopic cylinder 72 to retract in the direction away from the container 5 again, and at the same time controls the telescopic members 94 on different containers 5 to extend at different times by means of electrical control. In this process, since the pushing member 73 keeps moving, the pushing member 73 can simultaneously drive the multiple limiting members 74 to move in the direction away from the container 5. At this time, since the multiple telescopic members 94 extend at different times, the limiting members 74 in the multiple containers 5 are limited, so that each limiting member 74 stays in the position in the container 5. The positions are different, and the opening of the sealing member 93 on the side away from the partition 6 is smaller than the opening on the side close to the partition 6. Therefore, the connecting channels between each container 5 and the mixing chamber 71 are of different sizes. Due to the negative pressure generated by the pushing member 73 during the movement, the second filter element 92 can slide in the first filter element 91, so that the filter holes of the second filter element 92 and the first filter element 91 are staggered, so that the solution in the container 5 cannot completely flow into the mixing chamber 71. At the same time, the color developer is drawn out of the storage part 8 by the negative pressure, and is mixed with the mixed solution in the mixing chamber 71 for a second time, and the mixed solution is sent to different containers 5 by the movement of the pushing member 73.

[0053] At this time, since the connecting passages between each container 5 and the mixing chamber 71 are of different sizes, the amount of secondary mixed solution fed into each container 5 is also different, so that the ratio of the developer to the sample solution in the mixed solution in each container 5 is different. When the mixed solution in the container 5 is optically detected by the device, multiple groups of detection data are obtained by simultaneously detecting mixed solutions of different ratios, and the best detection data is obtained based on the detection data.

[0054] It should be noted that, because the contents of different components in each batch of mixed solvents fluctuate, the preset standard amount is not the actual standard amount. In the first-order mixing stage, the volume of the color developer added to the mixed solution is slightly lower than the preset standard amount. For the sake of convenience, the best display effect is given by adding 3 ml of the color developer to 10 ml of the mixed solvent, that is, the preset standard amount of the color developer added to 10 ml of the mixed solvent is 3 ml. In the first-order mixing stage, the content of the color developer added to the multiple containers 5 is 2.5 ml, and a color development experiment is performed by the device. If the color development effect is obvious, the second-order mixing is not performed; if the color development effect is not obvious, it means that the amount of color developer added at this time has not reached the marked amount, and the second-order mixing is performed at this time. Taking five containers 5 as an example, the content of the color developer in the five containers that complete the second-order mixing is: 3 ml, 3.5 ml, 4 ml, 4.5 ml, 5 ml; and the color development experiment is performed on the five containers 5 by the device. If the curve of the color development experiment tends to be stable after 4 ml, it means that the standard amount of the color developer of this batch of mixed solution is 4 ml;

[0055] If the curve of this color development experiment still shows an upward trend, it means that the standard amount of the color developer of this batch of mixed solution is higher than 5 ml. At this time, the standard amount of the color developer of this batch of mixed solution can be obtained by repeating the second-order mixing steps many times.

[0056] When the device is used to detect the heavy metal content in the broken wall slices of Taibai Fritillaria, if the test result fluctuates greatly, it means that the liquid surface of the mixed solution in the container 5 is shaking due to mixing and is not in a static state. At this time, the telescopic parts 94 at the bottom of each container 5 are controlled to extend at the same time, so that the telescopic parts 94 limit the limit parts 74, and then the pushing parts 73 are controlled to move. At this time, due to the limitation of the limit parts 74 by the telescopic parts 94, the limit parts 74 cannot move with the pushing parts 73. In this state, the limit parts 74 can cooperate with the sealing parts 93 to seal the bottom of the container 5, thereby preventing the mixed solution in the container 5 from leaking. At the same time, by controlling the pushing parts 73 reciprocates, so that the telescopic tube arranged between the pushing member 73 and the limiting member 74 reciprocates to extend and shorten, and a small vibration is generated by the mutual friction of the telescopic tube, and the vibration is transmitted to the container 5. Through the propagation and dissipation process of the vibration wave in the liquid, the small disturbance of the liquid surface is quickly dispersed to make it calm, thereby solving the problem that the early stirring will cause the solution surface to shake, and the shaking of the liquid surface will cause the light to be scattered and reflected when passing through the sample solution, which will make part of the light unable to be received by the detector, thereby affecting the accuracy of the measurement result. If stirring is not performed, the mixing effect of the sample solution and the color developer will be poor, which will also affect the accuracy of the measurement result.

[0057] When the device needs to be cleaned after the detection is completed, an excess amount of clean water is added to the container 5, and the color developer in the storage part 8 is extracted and replaced with a cleaning liquid. The clean water and the cleaning liquid in the container 5 are mixed by controlling the reciprocating motion of the pusher 73, and it is determined by light detection whether there are any heavy metal ions remaining in the container 5, thereby achieving effective cleaning of the container 5 and avoiding the problem that the human eye cannot directly observe the trace heavy metals and color developer residues in the container 5, which may easily lead to the inability to effectively clean the container 5 and affect the secondary detection.

[0058] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. 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 heavy metal detection device, comprising a housing (1) and a container (5), characterized in that: The heavy metal detection device also includes: A darkroom (2), the darkroom (2) being arranged on one side of the housing (1), and having light inlets (3) and light outlets (4) respectively disposed on opposite sides of the darkroom (2); A mixing section (7), the mixing section (7) being arranged in the darkroom (2), and the mixing section (7) being capable of mixing sample solutions and color developing agents in a plurality of containers (5) at the same time; an adjusting portion (9), the adjusting portion (9) being arranged at one end of the container (5) close to the mixing portion (7), the adjusting portion (9) comprising a first filter element (91) and a second filter element (92), the first filter element (91) being arranged in the container (5), the second filter element (92) being sleeved in the first filter element (91), and the filter holes on the first filter element (91) and the second filter element (92) being capable of being displaced and overlapped according to the sliding of the second filter element (92), the adjusting portion (9) being capable of cooperating with the mixing portion (7) to achieve mixing of the sample solution and the color developer, and to keep the liquid level in the container (5) stable; The sample solution in the container (5) is initially mixed with the color developer through the mixing section (7), and then part of the mixed solution in the container (5) is extracted and mixed with the color developer for a second time through the regulating section (9) in cooperation with the mixing section (7), and the second mixed solution is added to a plurality of containers (5) in different amounts and mixed with the initially mixed solution, thereby achieving the injection of mixed solutions of different proportions in the plurality of containers (5).

2. The heavy metal detection device according to claim 1, characterized in that: A partition (6) is provided in the middle of the inner cavity of the darkroom (2), one side of the partition (6) is connected to a plurality of containers (5), and the other side of the partition (6) is provided with a mixing section (7) and a storage section (8), the storage section (8) is filled with a color developer, and a one-way valve is provided at the connection between the storage section (8) and the mixing section (7), so that the storage section (8) can deliver the color developer into the mixing section (7) through suction of the mixing section (7).

3. The heavy metal detection device according to claim 2, characterized in that: The mixing portion (7) comprises a mixing chamber (71). A telescopic cylinder (72) is provided on a side of the mixing chamber (71) away from the partition (6). A pushing member (73) is fixedly connected to the telescopic end of the telescopic cylinder (72). The pushing member (73) can slide in a sealed manner in the mixing chamber (71) according to the telescopic movement of the telescopic cylinder (72). Telescopic tubes are provided on the pushing member (73) in a linear array. A limiting member (74) is provided at one end of the telescopic tube away from the pushing member (73). The plurality of limiting members (74) correspond to the containers (5) one by one.

4. The heavy metal detection device according to claim 3, characterized in that: The regulating portion (9) further comprises a sealing member (93), wherein the sealing member (93) is arranged at one end of the container (5) close to the mixing portion (7), and the sealing member (93) can cooperate with the limiting member (74) to seal one end of the container (5); the outer side of the sealing member (93) is fixedly connected to the first filter member (91); a return spring is provided at one end of the sealing member (93) away from the limiting member (74); and the second filter member (92) is connected to the limiting member (74) via the return spring.

5. The heavy metal detection device according to claim 4, characterized in that: The side of the sealing member (93) close to the limiting member (74) is arranged in an inclined manner, and the opening of the side of the sealing member (93) away from the partition (6) is smaller than the opening of the side close to the partition (6). The side of the sealing member (93) close to the limiting member (74) is provided with a plurality of electrically controlled telescopic members (94) in a circular array, and one end of the limiting member (74) close to the sealing member (93) is provided with a plurality of sockets (75) in a circular array, and the telescopic members (94) can extend into different sockets (75) to limit the limiting member (74).

6. The heavy metal detection device according to claim 5, characterized in that: A light source unit (11) is also provided in the housing (1), the light source unit (11) comprising a tritium lamp capable of emitting high-intensity ultraviolet rays and visible light and a halogen tungsten lamp capable of emitting visible light, the light source unit (11) further comprising a conversion mechanism provided between the tritium lamp and the halogen tungsten lamp, the conversion mechanism being capable of irradiating light emitted by the tritium lamp or the halogen tungsten lamp outward.

7. The heavy metal detection device according to claim 6, characterized in that: A dimming unit (12) is also provided in the housing (1), the dimming unit (12) comprising a rotatable grating, and the dimming unit (12) is capable of dispersing light emitted by the light source unit (11) through the grating and then emitting the light in the direction of the dark room (2).

8. The heavy metal detection device according to claim 7, characterized in that: A photoelectric detection unit (13) is also provided in the housing (1), the photoelectric detection unit (13) is in communication with the light outlet (4), and the photoelectric detection unit (13) is capable of converting a collected light signal into an electrical signal.

9. The heavy metal detection device according to claim 8, characterized in that: The housing (1) is further provided with a control unit (14), a display unit (15) and a cover plate (16); the control unit (14) is electrically connected to the light source unit (11), the dimming unit (12) and the photoelectric detection unit (13); the control unit (14) is capable of processing electrical signals and transmitting the signals to the display unit (15); the cover plate (16) is capable of closing the darkroom (2) to create a dark environment; a heating unit is further provided in the darkroom (2); the heating unit is capable of heating or cooling the mixed solution in the container (5).

10. Use of the heavy metal detection device as described in any one of claims 1 to 9 in the production of Taibai Fritillaria wall-broken medicinal slices.

Images