Lake bottom sludge heavy metal analysis detection device

Abstract

The application discloses a lake bottom sludge heavy metal analysis and detection device, relates to the technical field of lake bottom sludge heavy metal analysis and detection by using optical means, and discloses a lake bottom sludge heavy metal analysis and detection device, which comprises a detection box body, and a protection door is hinged to the front side of the detection box body. In the process of analyzing and detecting the lake bottom sludge heavy metal by means of ultraviolet light irradiation, the mutual cooperation of the liquid supply assembly, the lifting assembly and the transmission assembly enables the detector, the ultraviolet light source and the monochromator to always be located in the middle position of the liquid along with the rising of the sludge heavy metal solution liquid level in the sample pool, the influence of the liquid level on the light irradiation in the detection process is reduced through the control of the detection position, the accuracy of the detection is ensured, and in the detection process, the sludge heavy metal solution liquid level in the sample pool is extruded by the pressure supply assembly, the fluctuation range of the sludge heavy metal solution is reduced, and the accuracy of the detection is further ensured.

Description

Technical Field

[0001] This invention relates to the field of heavy metal analysis and detection technology in lake bottom sludge using optical methods, specifically to a heavy metal analysis and detection device for lake bottom sludge. Background Technology

[0002] Ultraviolet (UV) light irradiation is a common method for analyzing heavy metals in lake bottom sludge. In this process, the sludge is treated into a solution, and a UV light source and monochromator are used to irradiate the liquid sludge solution containing heavy metals. When UV light irradiates the solution, heavy metal ions absorb light of specific wavelengths, causing changes in light intensity. The intensity of the irradiated light is then measured using a detector. According to Beer-Lambert law, under certain conditions, the concentration of heavy metal ions is directly proportional to the absorbance. By measuring the absorbance of the sample to a specific wavelength of UV light, the heavy metal content can be calculated.

[0003] In the process of analyzing and detecting heavy metals in lake bottom sludge using ultraviolet light irradiation, the liquid level of the heavy metal solution changes with the supply volume. Since the detector, ultraviolet light source, and monochromator are relatively fixed in their positions, when the liquid level is close to the horizontal plane of these components, firstly, minute fluctuations in the liquid level cause frequent changes in the incident angle and optical path of the light, leading to significant fluctuations in the detection results. Secondly, refraction and reflection occur at the liquid level; as the light approaches the surface, the incident angle changes considerably, causing the refracted light path to deviate from the expected path, preventing the light from accurately passing through the liquid in the sample cell. This affects the interaction between the light and the heavy metals in the sample, thus impacting the accuracy of the detection results. Therefore, we propose a device for analyzing and detecting heavy metals in lake bottom sludge. Summary of the Invention

[0004] The purpose of this invention is to provide a heavy metal analysis and detection device for lake bottom sludge to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heavy metal analysis and detection device for lake bottom sludge, comprising:

[0006] The detection chamber has a protective door hinged to its front side, and a display for detection display is installed on the protective door. Inside the detection chamber are a sample cell for optical analysis and detection of heavy metals in lake bottom sludge, a detector for optical signal detection, and an emission processing component for processing the emitted light source. The sample cell is fixed inside the detection chamber, and the detector and emission processing component are located on either side of the sample cell. The emission processing component includes a mounting box on which an ultraviolet light source and a monochromator are mounted. Inside the detection chamber is a signal processing component electrically connected to the detector and the display. The chamber also includes:

[0007] Two sets of mounting slide rails are installed inside the detection chamber, symmetrically arranged on both sides of the sample cell. A U-shaped plate is fixed between the two sets of mounting slide rails to assist in synchronous lifting and lowering. A sliding assembly for sliding connection of the U-shaped plate is provided on the outside of the sample cell. An installation limiting assembly for limiting the installation of the detector or emission processing component is provided on the mounting slide rail. A liquid supply assembly for supplying the treated sludge heavy metal solution is provided between the detection chamber and the sample cell. A pressure supply assembly for pressurizing the sludge heavy metal solution inside the sample cell is provided inside the sample cell. A lifting assembly for raising and lowering the two sets of mounting slide rails during the liquid supply process is provided on the sample cell.

[0008] Preferably, the liquid supply assembly includes a delivery pipe installed on the detection chamber and the sample cell, one end of the delivery pipe being connected to the inner bottom of the sample cell, a control valve for controlling the start and stop of delivery being installed on the delivery pipe, a piston plate that is slidably connected to the inside of the sample cell and matched with its internal chamber, and a sealing assembly for sealing being provided between the piston plate and the inside of the sample cell.

[0009] Preferably, the lifting assembly includes a gear disposed inside the detection chamber, a connecting assembly for assisting the connection of the gear and the U-shaped plate, a fixed rack fixed to the outside of the sample pool, a transmission rack disposed inside the detection chamber, the gear being located between the fixed rack and the transmission rack, and the gear, the fixed rack and the transmission rack being meshed with each other, and a transmission assembly for assisting transmission being disposed between the piston plate and the transmission rack.

[0010] Preferably, the transmission assembly includes an L-shaped plate disposed on the outside of the sample cell, a connecting plate fixed on the L-shaped plate, a transmission rack fixed to the lower end of the connecting plate, and multiple sets of sliding rods slidably connected to the upper end of the sample cell, with the two ends of the sliding rods respectively connected and fixed to the piston plate and the L-shaped plate.

[0011] Preferably, the connecting assembly includes a fixing rod fixed to a U-shaped plate, a U-shaped frame fixed on the fixing rod, a rotating shaft rotatably connected to the U-shaped frame, and a gear centrally fixed on the rotating shaft.

[0012] Preferably, the sliding assembly includes two sets of fixing blocks symmetrically fixed to the outside of the sample cell, and T-shaped rods are slidably connected to the two sets of fixing blocks, with one end of the T-shaped rods fixed to a U-shaped plate.

[0013] Preferably, the sealing assembly includes an annular groove formed on the outside of the piston plate, and a sealing strip is installed inside the annular groove, the sealing strip being disposed against the inner wall of the sample cell.

[0014] Preferably, the pressure supply assembly includes a gravity cylinder disposed inside the sample cell. The gravity cylinder is located above the piston plate and is connected and fixed by a connecting rod. A gravity block is placed inside the gravity cylinder.

[0015] Preferably, the installation limiting component includes a slide groove formed on the installation slide rail, and a mounting frame for locking and fixing the detector or emission processing component is slidably connected to the slide groove. Mounting brackets are fixed on both sides of the mounting frame, and threaded pins are threadedly engaged with the mounting brackets through threaded holes. After the detector, ultraviolet light source and monochromator are installed, they are on the same straight line on the horizontal side.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] In the process of analyzing and detecting heavy metals in lake bottom sludge using ultraviolet light irradiation, the detector, ultraviolet light source, and monochromator are kept in the middle position of the liquid as the level of the heavy metal solution in the sludge rises in the sample cell through the cooperation of the liquid supply component, lifting component, and transmission component. By controlling the detection position, the influence of the liquid surface on the light irradiation during the detection process is reduced, ensuring the accuracy of the detection. Furthermore, during the detection process, the pressure supply component generates squeezing pressure on the level of the heavy metal solution in the sludge inside the sample cell, reducing the amplitude of fluctuations in the heavy metal solution and further ensuring the accuracy of the detection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the detection chamber of the present invention;

[0020] Figure 3 This is a schematic diagram of the sample cell and two sets of mounting slide rails of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation limiting component structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the emission processing component structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the U-shaped plate and two sets of mounting slide rails of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the sample cell of the present invention;

[0025] Figure 8 This is a schematic diagram of the liquid supply component structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the pressure supply assembly and sealing assembly of the present invention;

[0027] Figure 10 This is a schematic diagram showing the positional relationship of the lifting components before liquid supply in this invention;

[0028] Figure 11 This is a schematic diagram of the lifting assembly, transmission assembly, and connecting assembly of the present invention;

[0029] Figure 12 This is a schematic diagram of the state of the lifting component after transmission during the liquid supply process of the present invention.

[0030] In the diagram: 101-Detection chamber; 102-Protective door; 103-Display; 104-Sample cell; 105-Detector; 1061-Mounting box; 1062-UV light source; 1063-Monochromator; 2-Mounting slide rail; 3-U-shaped plate; 401-Fixing block; 402-T-shaped rod; 501-Slide groove; 502-Mounting frame; 503-Mounting bracket; 504-Threaded pin; 601- Conveying pipe; 602-Control valve; 603-Piston plate; 701-Gravity cylinder; 702-Connecting rod; 703-Gravity block; 801-Annular groove; 802-Sealing strip; 901-Gear; 902-Fixed rack; 903-Transmission rack; 1001-Fixed rod; 1002-U-shaped frame; 1003-Rotating shaft; 1101-L-shaped plate; 1102-Connecting plate; 1103-Slide rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] Please see Figures 1-12The diagram shows a heavy metal analysis and detection device for lake bottom sludge, comprising:

[0034] The detection chamber 101 has a protective door 102 hinged on the front side. The protective door 102 is equipped with a display 103 for detection display. Inside the detection chamber 101, there is a sample cell 104 for optical analysis and detection of heavy metals in lake bottom sludge, a detector 105 for optical signal detection, and an emission processing component for light source emission processing. The sample cell 104 is fixed inside the detection chamber 101. The detector 105 and the emission processing component are located on both sides of the sample cell 104. The emission processing component includes a mounting box 1061. An ultraviolet light source 1062 and a monochromator 1063 are mounted on the mounting box 1061. Inside the detection chamber 101, there is a signal processing component, and the signal processing component is electrically connected to the detector 105 and the display 103.

[0035] It should be noted that after the sludge heavy metal solution is transported, the detector 105, ultraviolet light source 1062, and monochromator 1063 are activated. The ultraviolet light source 1062 provides light, and the monochromator 1063 decomposes the composite light emitted by the ultraviolet light source 1062 into monochromatic light, which is directed towards the sludge heavy metal solution inside the sample cell 104. The detector 105 receives the light after passing through the sample cell 104 and converts the light signal into an electrical signal. The signal processing unit then processes and analyzes the electrical signal from the detector 105 and displays the data on the display 103, thus completing the analysis and detection of heavy metals in the lake bottom sludge by ultraviolet light irradiation.

[0036] It is worth noting here that the detector 105, sample cell 104, ultraviolet light source 1062, monochromator 1063, signal processing unit and display 103 are conventional operating components in the process of analyzing and detecting heavy metals in lake bottom sludge by ultraviolet light irradiation. Their working principle, installation and operation are prior art in this application and will not be described in detail here.

[0037] Also includes:

[0038] Two sets of mounting slide rails 2 are installed inside the detection chamber 101. The mounting slide rails 2 are symmetrically arranged on both sides of the sample cell 104. A U-shaped plate 3 for assisting synchronous lifting and lowering is fixed between the two sets of mounting slide rails 2. A sliding component for sliding connection of the U-shaped plate 3 is provided on the outside of the sample cell 104. An installation limiting component for assisting the installation and limiting of the detector 105 or the emission processing component is provided on the mounting slide rail 2. A liquid supply component for supplying the treated sludge heavy metal solution is provided between the detection chamber 101 and the sample cell 104. A pressure supply component for pressurizing the sludge heavy metal solution inside the sample cell 104 is provided inside the sample cell 104. A lifting component for raising and lowering the two sets of mounting slide rails 2 during the liquid supply process is provided on the sample cell 104.

[0039] It should be noted that during the analysis and detection of heavy metals in lake bottom sludge using ultraviolet light irradiation, the cooperation of the liquid supply component, lifting component, and transmission component ensures that the detector 105, ultraviolet light source 1062, and monochromator 1063 remain in the middle position of the liquid as the level of the heavy metal solution in the sludge inside the sample cell 104 rises. By controlling the detection position, the influence of the liquid surface on the light irradiation during the detection process is reduced, ensuring the accuracy of the detection. Furthermore, during the detection process, the pressure supply component generates squeezing pressure on the level of the heavy metal solution in the sludge inside the sample cell 104, reducing the amplitude of fluctuations in the heavy metal solution and further ensuring the accuracy of the detection.

[0040] Preferably, the liquid supply assembly includes a delivery pipe 601 installed on the detection chamber 101 and the sample cell 104. One end of the delivery pipe 601 is connected to the inner bottom of the sample cell 104. A control valve 602 for delivery start and stop control is installed on the delivery pipe 601. A piston plate 603 is slidably connected inside the sample cell 104 and matched with its internal chamber. A sealing assembly for sealing is provided between the piston plate 603 and the inside of the sample cell 104.

[0041] It should be noted here that: the sludge heavy metal solution is placed in an external liquid delivery device and one end of the external liquid delivery device is connected to one end of the delivery pipe 601. After installation, the sludge heavy metal solution is delivered to the sample cell 104 through the delivery pipe 601 by the driving action of the liquid delivery device. After the sludge heavy metal solution is delivered, the control valve 602 is closed and the detector 105, ultraviolet light source 1062 and monochromator 1063 are started.

[0042] Preferably, the lifting assembly includes a gear 901 disposed inside the detection chamber 101, a connecting assembly for assisting the connection of the gear 901 between the gear 901 and the U-shaped plate 3, a fixed rack 902 fixed to the outside of the sample pool 104, a transmission rack 903 disposed inside the detection chamber 101, the gear 901 being located between the fixed rack 902 and the transmission rack 903, and the gear 901, the fixed rack 902 and the transmission rack 903 being meshed with each other, and a transmission assembly for assisting the transmission is disposed between the piston plate 603 and the transmission rack 903;

[0043] It should be noted here that: through transmission, the transmission rack 903 is driven to move upward synchronously. During the movement of the transmission rack 903, the meshing transmission between the transmission rack 903 and the gear 901, and the meshing transmission between the gear 901 and the fixed rack 902, causes the gear 901 to rotate and move upward simultaneously. During the upward movement of the gear 901, the connection of the connecting component and the U-shaped plate 3 drives the two sets of mounting slide rails 2 to move upward. The movement of the two sets of mounting slide rails 2 drives the detector 105, the ultraviolet light source 1062, and the monochromator 1063 to move upward and maintain the same horizontal line. During the upward movement, when the transmission rack 903 moves upward a distance L, the meshing point between the gear 901 and the transmission rack 903 is set as A, and the meshing point with the fixed rack 902 is set as B, with point B as the relative stationary reference. Since the fixed rack 902 is stationary, the gear 901 will rotate around point B. From the perspective of circular motion, point A moves a distance L with the transmission rack 903. Points A and B are at opposite ends of the same diameter on the gear 901. According to the properties of circular motion, during the rotation of the gear 901, the linear velocities at both ends of the diameter are equal in magnitude and opposite in direction. The linear velocity of point A is equal to the linear velocity of point B relative to point A. Since point B is relatively stationary, the distance that the center of the gear 901 moves relative to point A is half of L. Therefore, when the piston plate 603 and the transmission rack 903 move upward, they drive the gear 901, the U-shaped plate 3, and the mounting slide rail 2 to rise by half a distance, so that the detector 105, the ultraviolet light source 1062, and the monochromator 1063 are in the middle position of the sludge heavy metal solution inside the sample cell 104.

[0044] It should be noted here that the module and number of teeth of gear 901, fixed rack 902 and transmission rack 903 are matched to ensure good meshing transmission.

[0045] Preferably, the transmission assembly includes an L-shaped plate 1101 disposed on the outside of the sample cell 104, a connecting plate 1102 fixed on the L-shaped plate 1101, a transmission rack 903 fixed to the lower end of the connecting plate 1102, and multiple sets of slide rods 1103 slidably connected to the upper end of the sample cell 104, with the two ends of the slide rods 1103 respectively connected and fixed to the piston plate 603 and the L-shaped plate 1101;

[0046] It should be noted that during the process of transporting the sludge heavy metal solution to the sample tank 104 through the conveying pipe 601, the piston plate 603 is pushed by the pressure of the sludge heavy metal solution inside the sample tank 104, causing the piston plate 603 to move upward synchronously with the transport of the sludge heavy metal solution. During the upward movement of the piston plate 603, the transmission rack 903 is driven to move upward synchronously through the connection of the slide rod 1103, the L-shaped plate 1101 and the connecting plate 1102.

[0047] Preferably, the connecting assembly includes a fixing rod 1001 fixed to the U-shaped plate 3, a U-shaped frame 1002 fixed on the fixing rod 1001, a rotating shaft 1003 rotatably connected to the U-shaped frame 1002, and a gear 901 centrally fixed on the rotating shaft 1003;

[0048] It should be noted here that the fixed rod 1001, U-shaped frame 1002 and rotating shaft 1003 facilitate the rotatable connection of gear 901.

[0049] Preferably, the sliding assembly includes two sets of fixing blocks 401 symmetrically fixed to the outside of the sample cell 104, and T-shaped rods 402 are slidably connected to the two sets of fixing blocks 401, with one end of the T-shaped rods 402 fixed to the U-shaped plate 3;

[0050] It should be noted here that the movement of the U-shaped plate 3 after being subjected to force is guided by the fixing block 401 and the T-shaped rod 402.

[0051] Preferably, the sealing assembly includes an annular groove 801 formed on the outside of the piston plate 603, and a sealing strip 802 is installed inside the annular groove 801, the sealing strip 802 being disposed against the inner wall of the sample cell 104.

[0052] It should be noted that the sealing strip 802 inside the annular groove 801 helps to maintain the seal between the piston plate 603 and the sample cell 104.

[0053] Preferably, the pressure supply assembly includes a gravity cylinder 701 disposed inside the sample cell 104. The gravity cylinder 701 is located above the piston plate 603 and is connected and fixed by a connecting rod 702. A gravity block 703 is placed inside the gravity cylinder 701.

[0054] It should be noted that after the sludge heavy metal solution is transported to the sample pool 104 through the delivery pipe 601, the gravity of the gravity cylinder 701 and gravity block 703 on the pressure supply component, as well as the connection between the connecting rod 702 and the piston plate 603, generates a squeezing force on the surface of the sludge heavy metal solution inside the sample pool 104, reducing the amplitude of fluctuations in the sludge heavy metal solution and further ensuring the accuracy of the detection.

[0055] Preferably, the installation limiting component includes a slide groove 501 formed on the installation slide rail 2, a mounting frame 502 for fixing the detector 105 or the emission processing component is slidably connected on the slide groove 501, mounting brackets 503 are fixed on both sides of the mounting frame 502, and threaded pins 504 are threadedly engaged on the mounting brackets 503 through threaded holes, and the detector 105, ultraviolet light source 1062 and monochromator 1063 are on the same straight line on the horizontal side after installation;

[0056] It should be noted here that: after the detector 105 or the emission processing component is fixed on the mounting frame 502, the position of the detector 105 or the emission processing component is adjusted by the sliding action of the mounting frame 502 inside the slide groove 501. After the adjustment is completed, the threaded pin 504 is rotated. During the rotation, one end of the threaded pin 504 abuts against the mounting slide rail 2 to limit and fix the position of the adjusted mounting frame 502.

[0057] This solution includes a heavy metal analysis and detection device for lake bottom sludge, comprising the following steps:

[0058] In the process of analyzing and detecting heavy metals in lake bottom sludge using ultraviolet light irradiation, the lake bottom sludge is first treated. During the treatment process, a professional sludge sampler is used to collect representative lake bottom sludge samples from different areas and depths of the lake to ensure that the samples can reflect the heavy metal content of the entire lake bottom sludge. After collection, the collected sludge samples are placed in a well-ventilated environment to air dry naturally or dried in a low-temperature oven to remove moisture. The dried samples are then ground into fine powder using a mortar and pestle and sieved to make the sample particles uniform for subsequent analysis. The sieved samples are weighed and digestion reagents (nitric acid, hydrochloric acid, hydrofluoric acid) are added to convert the heavy metal elements in the sludge into ionic form, making them soluble in the solution to prepare a sludge heavy metal solution.

[0059] After the heavy metal solution in the sludge is prepared, it is placed in an external liquid conveying device, and one end of the external liquid conveying device is connected to one end of the conveying pipe 601. After installation, the heavy metal solution in the sludge is conveyed through the conveying pipe 601 to the interior of the sample pool 104 by the driving action of the liquid conveying device. After the heavy metal solution in the sludge is conveyed, the control valve 602 is closed and the detector 105, the ultraviolet light source 1062 and the monochromator 1063 are started. The ultraviolet light source 1062 provides light source and the monochromator 1063 decomposes the composite light emitted by the ultraviolet light source 1062 into monochromatic light to irradiate the heavy metal solution in the sludge inside the sample pool 104. The detector 105 receives the light after passing through the sample pool 104 and converts the light signal into an electrical signal. The signal processing component processes and analyzes the electrical signal from the detector 105 and displays the data on the display 103, thus completing the analysis and detection of heavy metals in the lake bottom sludge by ultraviolet light irradiation.

[0060] During the process of transporting the sludge heavy metal solution to the sample pool 104 through the conveying pipe 601, the pressure of the sludge heavy metal solution inside the sample pool 104 on the piston plate 603 pushes the piston plate 603 upward synchronously with the transport of the sludge heavy metal solution. During the upward movement of the piston plate 603, the transmission rack 903 is driven to rise synchronously through the connection of the slide rod 1103, the L-shaped plate 1101, and the connecting plate 1102. During the movement of the transmission rack 903, the meshing transmission between the transmission rack 903 and the gear 901, and the meshing transmission between the gear 901 and the fixed rack 902, causes the gear 901 to rotate and rise simultaneously. During the upward movement of the gear 901, the connection of the connecting component and the U-shaped plate 3 drives the two sets of mounting slide rails 2 to rise. The movement of the two sets of mounting slide rails 2 drives the detector 105, the ultraviolet light source 1062, and the monochromator 1063 to rise and maintain the same horizontal line. During the upward movement, when When the transmission rack 903 moves upward a distance L, let A be the meshing point between gear 901 and the transmission rack 903, and B be the meshing point with the fixed rack 902. Taking point B as a relatively stationary reference point, since the fixed rack 902 is stationary, gear 901 will tend to rotate around point B. From the perspective of circular motion, point A moves a distance L with the transmission rack 903. Points A and B are at opposite ends of the same diameter on gear 901. According to the properties of circular motion, during the rotation of gear 901, the two ends of the diameter... Since the linear velocities of the points are equal in magnitude and opposite in direction, the linear velocity of point A relative to point B is equal in magnitude to the linear velocity of point B relative to point A. Because point B is relatively stationary, the distance the center of gear 901 moves relative to point A is half of L. Therefore, when the piston plate 603 and the transmission rack 903 move upwards, they drive gear 901, U-shaped plate 3, and mounting slide rail 2 to rise by half a distance, placing the detector 105, ultraviolet light source 1062, and monochromator 1063 in the middle position of the sludge heavy metal solution inside the sample cell 104 (see...). Figure 12 (The state of the liquid surface) By controlling the position, the influence of light on the liquid surface during the detection process is reduced, ensuring the accuracy of the detection;

[0061] After the sludge heavy metal solution is transported to the sample pool 104 through the delivery pipe 601, the pressure exerted on the piston plate 603 by the pressure supply component and the connection function of the piston plate 603 generate squeezing pressure on the surface of the sludge heavy metal solution inside the sample pool 104, reducing the amplitude of fluctuations in the sludge heavy metal solution and further ensuring the accuracy of the detection.

[0062] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy metal analysis and detection device for lake bottom sludge, comprising: The detection chamber (101) has a protective door (102) hinged on the front side. The protective door (102) is equipped with a display (103) for detection display. The detection chamber (101) contains a sample cell (104) for optical analysis and detection of heavy metals in lake bottom sludge, a detector (105) for light signal detection, and an emission processing component for light source emission processing. The sample cell (104) is fixed inside the detection chamber (101). The detector (105) and the emission processing component are located on both sides of the sample cell (104). The emission processing component includes a mounting box (1061). An ultraviolet light source (1062) and a monochromator (1063) are mounted on the mounting box (1061). The detection chamber (101) contains a signal processing component, and the signal processing component is electrically connected to the detector (105) and the display (103). Its characteristic is that it further includes: Two sets of mounting slide rails (2) are installed inside the detection chamber (101). The mounting slide rails (2) are symmetrically arranged on both sides of the sample pool (104). A U-shaped plate (3) for assisting synchronous lifting and lowering is fixed between the two sets of mounting slide rails (2). A sliding component for sliding connection of the U-shaped plate (3) is provided on the outside of the sample pool (104). An installation limiting component for assisting the installation and limiting of the detector (105) or emission processing component is provided on the mounting slide rails (2). A liquid supply component for supplying the treated sludge heavy metal solution is provided between the detection chamber (101) and the sample pool (104). A pressure supply component for pressurizing the sludge heavy metal solution inside the sample pool (104) is provided inside the sample pool (104). A lifting component for raising and lowering the two sets of mounting slide rails (2) during the liquid supply process is provided on the sample pool (104). The pressure supply assembly includes a gravity cylinder (701) disposed inside the sample cell (104). The gravity cylinder (701) is located above the piston plate (603) and is connected and fixed by a connecting rod (702). A gravity block (703) is placed inside the gravity cylinder (701). The lifting assembly includes a gear (901) disposed inside the detection chamber (101). A connecting assembly for assisting the connection of the gear (901) is provided between the gear (901) and the U-shaped plate (3). A fixed rack (902) is fixed on the outside of the sample pool (104). A transmission rack (903) is disposed inside the detection chamber (101). The gear (901) is located between the fixed rack (902) and the transmission rack (903), and the gear (901), the fixed rack (902) and the transmission rack (903) are meshed with each other. A transmission assembly for assisting transmission is provided between the piston plate (603) and the transmission rack (903).

2. The heavy metal analysis and detection device for lake bottom sludge according to claim 1, characterized in that: The liquid supply assembly includes a delivery pipe (601) installed on the detection chamber (101) and the sample cell (104). One end of the delivery pipe (601) is connected to the inner bottom of the sample cell (104). A control valve (602) for delivery start and stop control is installed on the delivery pipe (601). A piston plate (603) is slidably connected inside the sample cell (104) and matched with its internal chamber. A sealing assembly for sealing is provided between the piston plate (603) and the inside of the sample cell (104).

3. The heavy metal analysis and detection device for lake bottom sludge according to claim 2, characterized in that: The transmission assembly includes an L-shaped plate (1101) disposed outside the sample cell (104), a connecting plate (1102) fixed on the L-shaped plate (1101), a transmission rack (903) fixed to the lower end of the connecting plate (1102), and multiple sets of slide rods (1103) slidably connected to the upper end of the sample cell (104). The two ends of the slide rods (1103) are respectively connected and fixed to the piston plate (603) and the L-shaped plate (1101).

4. The heavy metal analysis and detection device for lake bottom sludge according to claim 3, characterized in that: The connecting assembly includes a fixing rod (1001) fixed on a U-shaped plate (3), a U-shaped frame (1002) fixed on the fixing rod (1001), a rotating shaft (1003) rotatably connected on the U-shaped frame (1002), and a gear (901) centrally fixed on the rotating shaft (1003).

5. The heavy metal analysis and detection device for lake bottom sludge according to claim 1, characterized in that: The sliding assembly includes two sets of fixing blocks (401) symmetrically fixed to the outside of the sample cell (104), and T-shaped rods (402) are slidably connected to the two sets of fixing blocks (401). One end of the T-shaped rods (402) is fixed to the U-shaped plate (3).

6. The heavy metal analysis and detection device for lake bottom sludge according to claim 2, characterized in that: The sealing assembly includes an annular groove (801) formed on the outside of the piston plate (603), and a sealing strip (802) is installed inside the annular groove (801), the sealing strip (802) being disposed against the inner wall of the sample cell (104).

7. The heavy metal analysis and detection device for lake bottom sludge according to claim 1, characterized in that: The installation limiting assembly includes a slide groove (501) formed on the installation slide rail (2). A mounting frame (502) for fixing the detector (105) or emission processing component is slidably connected on the slide groove (501). Mounting brackets (503) are fixed on both sides of the mounting frame (502). Threaded pins (504) are threadedly engaged on the mounting brackets (503) through threaded holes. After installation, the detector (105), ultraviolet light source (1062), and monochromator (1063) are on the same straight line on the horizontal side.

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