ICP torch tube cleaning device and method for reducing detection interference

Abstract

The invention discloses an ICP torch pipe cleaning device and method capable of reducing detection interference. The ICP torch pipe cleaning device comprises a cleaning box, and a box door is hinged to the side face of the cleaning box; a sliding table is horizontally and slidably connected into the cleaning box, the lifting assembly is installed at the top of the sliding table, a cleaning tank is installed at the top of the lifting assembly, and a discharging pipe is installed on the side face of the cleaning tank; the placing frame is mounted in the cleaning tank, and the torch pipe is placed on the placing frame; the rotary lifting mechanism comprises a lifting frame and a spiral follow-up assembly, and the lifting frame is fixed to the top of the cleaning box; and the cleaning mechanism comprises a telescopic frame, a cleaning brush and a flushing assembly, the telescopic frame is fixed to the bottom end of the spiral follow-up assembly, the cleaning brush is installed on the telescopic frame, the flushing assembly is installed on the telescopic frame, and the telescopic frame stretches into the torch pipe. According to the invention, carbon deposition and attached impurities on the torch tube are effectively removed, corrosion danger is avoided, time is saved, and effective use of the torch tube and accuracy of detection results are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning of quartz torch tubes, and particularly to an ICP torch tube cleaning device and method for reducing detection interference. Background Art

[0002] As an important accessory of an inductively coupled plasma emission spectrometer, the torch tube is usually made of quartz. The torch tube is the combustion position of the plasma flame and also the place where the sample to be measured is ionized with the flame. It is a key part for the detector to sample. The cleanliness of the torch tube affects the accuracy of the detection result to a certain extent. Therefore, after the torch tube is used for a certain period of time, it will be regularly cleaned to remove residual sample impurities on the surface, such as carbon deposits, inorganic salts, etc. The traditional cleaning method is nothing more than soaking the used torch tube in a high-concentration acid solution for at least 24 hours and at most 48 hours, so that the stains are corroded and fall off through long-term soaking. For stubborn residues, strong acid cooking is required. The longer the cleaning time, the longer the instrument downtime, which affects the detection efficiency. During this process, there is not only the corrosion risk of touching strong acids, but even the risk of splashing during cooking. And long-term soaking without supervision will inevitably pose potential risks to others in the laboratory.

[0003] Based on the above technical problems, the present invention provides an ICP torch tube cleaning device and method for reducing detection interference. Summary of the Invention

[0004] The purpose of the present invention is to provide an ICP torch tube cleaning device and method for reducing detection interference to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the present invention provides the following solution: The present invention provides an ICP torch tube cleaning device for reducing detection interference, including:

[0006] A cleaning box, with a box door hinged to the side of the cleaning box;

[0007] A lifting assembly. A sliding table is horizontally slidably connected in the cleaning box. The lifting assembly is installed on the top of the sliding table. A cleaning tank is installed on the top of the lifting assembly. A discharge pipe is installed on the side of the cleaning tank;

[0008] A placement rack, which is installed in the cleaning tank. The torch tube is placed on the placement rack. There is a gap between the bottom of the placement rack and the bottom of the cleaning tank;

[0009] A rotary lifting mechanism, which includes a lifting frame and a spiral follower assembly. The lifting frame is fixed on the top of the cleaning box. The spiral follower assembly is rotatably connected to the lifting frame. One end of the spiral follower assembly extends into the cleaning box;

[0010] Cleaning mechanism, the cleaning mechanism includes a telescopic frame, a cleaning brush and a flushing component. The telescopic frame is fixed to the bottom end of the spiral follower component. The cleaning brush is installed on the telescopic frame. The flushing component is installed on the telescopic frame. The telescopic frame extends into the torch tube.

[0011] According to the ICP torch tube cleaning device for reducing detection interference provided by the present invention, the lifting component includes a first electric control lifting rod. A support block is fixedly connected to the top of the sliding table. The first electric control telescopic rod is vertically fixedly connected to the top of the support block. The top end of the first electric control lifting rod is fixed to the bottom of the cleaning tank. The bottom of the cleaning tank is symmetrically hinged with support arms. One end of the support arm is hinged with a slider. A sliding rod is horizontally fixedly connected to the support block. The slider is slidably connected to the sliding rod.

[0012] According to the ICP torch tube cleaning device for reducing detection interference provided by the present invention, the placement rack includes a top plate and a bottom plate. A number of rows of placement holes are provided on the top plate. The diameters of the placement holes in the same row increase in sequence. A support rod is vertically fixedly connected to the bottom surface of the top plate. The support rod is fixed to the bottom of the cleaning tank. The bottom plate is arranged below the top plate, and there is a gap between the bottom plate and the bottom of the cleaning tank. The bottom plate is a perforated plate. A number of rubber rings are fixed on the top surface of the bottom plate. The rubber rings are arranged corresponding to the placement holes.

[0013] According to the ICP torch tube cleaning device for reducing detection interference provided by the present invention, the lifting frame includes a support plate and a lifting plate. The support plate is horizontally arranged on the top of the cleaning box. Legs are fixedly connected between the support plate and the top surface of the cleaning box. A guide rod is vertically fixedly connected to the top surface of the support plate. The lifting plate is slidably connected to the guide rod. A second electric control telescopic rod is fixedly connected to the top surface of the support plate. The top end of the second electric control telescopic rod is fixed to the bottom surface of the lifting plate.

[0014] According to the ICP torch tube cleaning device for reducing detection interference provided by the present invention, several groups of spiral follower components are arranged on the bottom surface of the lifting plate. The spiral follower component includes a plug rod rotatably connected to the bottom surface of the lifting plate. A spiral strip is fixed to the outer wall of the plug rod. A guide sleeve is vertically fixedly connected to the support plate. A spiral groove is provided on the inner wall of the guide sleeve. The spiral strip is arranged corresponding to the spiral groove. One end of the plug rod passes through the top of the cleaning box and extends into the cleaning tank.

[0015] According to the ICP torch tube cleaning device for reducing detection interference provided by the present invention, the telescopic frame includes a frame body, on which connecting rods are symmetrically and rotatably connected. The connecting rods are rotatably connected to the side wall of the insertion rod. A sliding seat is vertically slidably connected to the insertion rod. A connecting pipe I is rotatably connected to the sliding seat. A connecting pipe II is rotatably connected to the frame body. An installation rod is arranged between the connecting pipe I and the connecting pipe II. The installation rod is slidably connected to the connecting pipe I and the connecting pipe II respectively. A first spring is sleeved on the installation rod, and both ends of the first spring are fixed to the connecting pipe I and the connecting pipe II respectively. A fixed seat is fixedly connected to the outer wall of the insertion rod, and a plug-in telescopic rod is fixed between the fixed seat and the sliding seat. A second spring is sleeved on the plug-in telescopic rod, and the second spring is fixed to the plug-in telescopic rod and the sliding seat. The cleaning brush is installed on the frame body.

[0016] According to the ICP torch tube cleaning device for reducing detection interference provided by the present invention, the flushing assembly includes a spray pipe fixedly connected to the frame body. A spray head is installed at the end of the spray pipe. One end of the spray pipe is fixed to a circulation pipe, and one end of the circulation pipe is communicated with the cleaning tank. A circulation pump is installed on the circulation pipe.

[0017] An ICP torch tube cleaning method for reducing detection interference includes the following steps:

[0018] Step 1: Place the torch tube in a muffle furnace at 700 - 800 °C and heat it for 10 - 15 minutes;

[0019] Step 2: Open the muffle furnace for 10 s to allow air to enter the muffle furnace, and then heat it up to 700 - 800 °C;

[0020] Step 3: Repeat Step 1 and Step 2 twice to remove the carbon deposits on the torch tube;

[0021] Step 4: After the muffle furnace cools down to room temperature, take out the torch tube, wash it clean with deionized water, and dry it;

[0022] Step 5: Place the torch tube on the placement rack in the cleaning tank, add cleaning agent to submerge the torch tube, and close the box door;

[0023] Step 6: The lifting frame controls the screw follower assembly and the telescopic frame at the bottom of the screw follower assembly to enter the torch tube. The lifting assembly repeats the lifting work and synchronously drives the screw follower assembly to rotate in a spiral manner to brush the inner wall of the torch tube. At the same time, the flushing assembly flushes the inner wall of the torch tube in a small disturbance manner;

[0024] Step 7: After cleaning, take out the torch tube, wash it clean with deionized water, dry it, and drain the cleaning liquid in the cleaning tank for the next cleaning.

[0025] The present invention discloses the following technical effects:

[0026] 1) Through the cooperation of the rotary lifting mechanism and the telescopic frame, the cleaning brush and the flushing component can penetrate into the inner part of the torch tube, achieving all-round and dead-angle-free cleaning, effectively removing stubborn dirt and residues on the inner wall of the torch tube, and greatly improving the cleaning quality.

[0027] 2) Since the telescopic frame can be telescoped, it can adapt to the cleaning requirements of torch tubes with different lengths and inner diameters, providing customized cleaning solutions for various types of torch tubes, and further improving the cleaning effect.

[0028] 3) The entire cleaning process can be controlled by an automated control system, realizing the automation of operations such as the horizontal movement of the cleaning tank, the height adjustment of the lifting component, the action of the rotary lifting mechanism, and the cleaning and flushing of the cleaning mechanism, reducing manual intervention, improving work efficiency, and reducing the labor intensity of operators.

[0029] 4) The cabinet door hinged on the side of the cleaning tank facilitates the operator to place and remove the torch tube. At the same time, the cabinet door can also play a sealing role to prevent the cleaning liquid from splashing out during the cleaning process and keep the working environment clean.

[0030] 5) The combination mode of the lifting frame and the spiral follower component can generate a spiral rotation during the lifting process to clean the torch tube all-round. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 is a schematic structural diagram of an ICP torch tube cleaning device for reducing detection interference according to the present invention;

[0033] Figure 2 is a schematic structural diagram of the cleaning mechanism of the present invention.

[0034] Figure 3 is a schematic structural diagram of the spiral follower component of the present invention.

[0035] Among them, 1. cleaning tank; 2. tank door; 3. sliding table; 4. cleaning tank; 5. first electric control lifting rod; 6. support block; 7. support arm; 8. slider; 9. sliding rod; 10. top plate; 11. bottom plate; 12. support plate; 13. lifting plate; 14. second electric control telescopic rod; 15. inserting rod; 16. guide sleeve; 17. frame body; 18. connecting rod; 19. sliding seat; 20. connecting pipe I; 21. connecting pipe II; 22. first spring; 23. fixed seat; 24. plug-in telescopic rod; 25. second spring; 26. spray pipe. Detailed implementation manner

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0037] In order to make the above-mentioned objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0038] Referring to Figures 1-3 , the present invention provides an ICP torch tube cleaning device for reducing detection interference, including:

[0039] A cleaning tank 1, with a tank door 2 hinged to the side of the cleaning tank 1;

[0040] A lifting assembly, a sliding table 3 is horizontally slidably connected in the cleaning tank 1, the lifting assembly is installed on the top of the sliding table 3, a cleaning tank 4 is installed on the top of the lifting assembly, and a discharge pipe is installed on the side of the cleaning tank 4;

[0041] A placement rack, the placement rack is installed in the cleaning tank 4, the torch tube is placed on the placement rack, and a gap is provided between the bottom of the placement rack and the bottom of the cleaning tank 4;

[0042] A rotary lifting mechanism, the rotary lifting mechanism includes a lifting frame and a spiral follower assembly, the lifting frame is fixed on the top of the cleaning tank 1, the spiral follower assembly is rotatably connected to the lifting frame, and one end of the spiral follower assembly extends into the cleaning tank 1;

[0043] A cleaning mechanism, the cleaning mechanism includes a telescopic frame, a cleaning brush, and a flushing assembly, the telescopic frame is fixed at the bottom end of the spiral follower assembly, the cleaning brush is installed on the telescopic frame, the flushing assembly is installed on the telescopic frame, and the telescopic frame extends into the torch tube.

[0044] When the present invention works, open the door 2 on the side of the cleaning tank 1, and place the torch tube on the placement rack in the cleaning tank 4. Since there is a gap between the bottom of the placement rack and the bottom of the cleaning tank 4, it provides space for the subsequent circulation and discharge of the cleaning liquid. By controlling the lifting component, the cleaning tank 4 is driven by the sliding table 3 to move horizontally in the cleaning tank 1 and adjusted to a suitable position to prepare for the operations of the subsequent rotation and lifting mechanism and the cleaning mechanism. At the same time, the lifting component can also adjust the height of the cleaning tank 4 to facilitate the placement and cleaning operations of torch tubes of different sizes. The spiral follower component rotates on the lifting frame. Since one end of the spiral follower component extends into the cleaning tank 1, its rotation will drive components such as the telescopic frame connected to it to generate rotational and lifting movements. The lifting frame is fixed to the top of the cleaning tank 1, providing a stable support and a rotation axis for the spiral follower component. The telescopic frame is fixed to the bottom end of the spiral follower component. As the spiral follower component rotates and lifts, the telescopic frame will extend into the torch tube. At the same time, the telescopic frame itself can be telescoped to adapt to the cleaning requirements of torch tubes of different diameters, ensuring that the cleaning brush and the flushing component can accurately reach various parts inside the torch tube. The cleaning brush is installed on the telescopic frame. During the process of the telescopic frame extending into the torch tube, the cleaning brush will contact the inner wall of the torch tube. With the movement of the rotation and lifting mechanism, the cleaning brush rotates and moves up and down inside the torch tube to brush the inner wall of the torch tube and remove dirt and impurities adhering to the inner wall. The flushing component is also installed on the telescopic frame. While the cleaning brush is brushing, the flushing component will spray the cleaning liquid into the torch tube. The cleaning liquid cooperates with the cleaning brush to wash away the dirt and impurities brushed off and discharge them out of the cleaning tank 1 through the discharge pipe on the side of the cleaning tank 4, thus completing the cleaning of the torch tube.

[0045] In a further optimized solution, the lifting component includes a first electric control lifting rod 5. A support block 6 is fixedly connected to the top of the sliding table 3. The first electric control telescopic rod is vertically fixedly connected to the top of the support block 6. The top end of the first electric control lifting rod 5 is fixed to the bottom of the cleaning tank 4. The bottom of the cleaning tank 4 is symmetrically hinged with support arms 7. One end of the support arm 7 is hinged with a slider 8. A sliding rod 9 is horizontally fixedly connected to the support block 6. The slider 8 is slidably connected to the sliding rod 9.

[0046] When the first electric control lifting rod 5 is in a contracted state, the cleaning tank 4 is in a lower position. The support arm 7 obliquely supports the bottom of the cleaning tank 4, and the slider 8 at its other end is located at a suitable position on the sliding rod 9. The sliding table 3 is in a stable state through the horizontal sliding connection with the cleaning tank 1, waiting for the torch tube to be placed.

[0047] Lifting adjustment: After the torch tube is placed in the cleaning tank 4, the control system sends an instruction to the first electric control lifting rod 5, and the first electric control lifting rod 5 starts to extend. Since the first electric control lifting rod 5 is vertically fixed on the top of the support block 6, the support block 6 is fixed to the sliding table 3, and the top end of the first electric control lifting rod 5 is fixed to the bottom of the cleaning tank 4. As the first electric control lifting rod 5 extends, the cleaning tank 4 is jacked up. During the upward movement of the cleaning tank 4, one end of the support arm 7 is hinged to the bottom of the cleaning tank 4, and the other end of the slider 8 slides on the sliding rod 9. The support arm 7 gradually changes from an inclined state to a vertical state, providing stable support for the cleaning tank 4 and ensuring that the cleaning tank 4 rises smoothly to an appropriate height, facilitating the subsequent operation of the cleaning mechanism.

[0048] After the cleaning is completed, the first electric control lifting rod 5 receives a contraction instruction and slowly descends, driving the cleaning tank 4 to descend. The support arm 7 also drops accordingly, and the slider 8 slides in the reverse direction on the sliding rod 9. Finally, the cleaning tank 4 returns to the initial lower position, facilitating the removal of the cleaned torch tube.

[0049] In a further optimized solution, the placement rack includes a top plate 10 and a bottom plate 11. A number of rows of placement holes are provided on the top plate 10, and the diameters of the placement holes in the same row increase sequentially. A support rod is vertically and fixedly connected to the bottom surface of the top plate 10, and the support rod is fixed to the bottom of the cleaning tank 4. The bottom plate 11 is arranged below the top plate 10, and there is a gap between the bottom plate 11 and the bottom of the cleaning tank 4. The bottom plate 11 is a perforated plate, and a number of rubber rings are fixed on the top surface of the bottom plate 11, and the rubber rings are arranged corresponding to the placement holes.

[0050] Open the door 2 of the cleaning box 1, and select the placement hole with the corresponding diameter on the top plate 10 according to the outer diameter of the torch tube. Insert the torch tube into the placement hole. Since the diameters of the placement holes in the same row increase sequentially, it can meet the placement requirements of torch tubes of different sizes. After the torch tube passes through the placement hole, its bottom contacts the rubber ring on the bottom plate 11. The rubber ring plays a role in buffering and positioning, preventing the torch tube from directly colliding with the bottom plate 11 and ensuring the stability of the torch tube on the placement rack at the same time.

[0051] During the cleaning process, the cleaning liquid is injected into the cleaning tank 4. The bottom plate 11 is a perforated plate, and the cleaning liquid can flow freely through the holes on the bottom plate 11, enabling the bottom of the torch tube to fully contact the cleaning liquid and improving the cleaning effect. The cleaning liquid carrying dirt after cleaning is discharged from the discharge pipe out of the cleaning box 1.

[0052] When the cleaning is completed, the operator can easily take out the torch tube from the placement hole. Due to the reasonable structural design of the placement rack, the process of taking and placing is convenient and fast, and the torch tube will not be damaged.

[0053] For a further optimized solution, the lifting frame includes a support plate 12 and a lifting plate 13. The support plate 12 is horizontally arranged on the top of the cleaning tank 1. There are legs fixedly connected between the support plate 12 and the top surface of the cleaning tank 1. A guide rod is vertically fixedly connected to the top surface of the support plate 12. The lifting plate 13 is slidably connected to the guide rod. A second electric control telescopic rod 14 is fixedly connected to the top surface of the support plate 12, and the top end of the second electric control telescopic rod 14 is fixedly connected to the bottom surface of the lifting plate 13.

[0054] The support plate 12 is horizontally fixed on the top of the cleaning tank 1 through legs, providing a stable support foundation for the entire lifting frame. The guide rod is vertically fixed to the top surface of the support plate 12, and the lifting plate 13 is slidably connected to the guide rod. Initially, the lifting plate 13 is in a lower position, and the second electric control telescopic rod 14 is in a contracted state, waiting to receive an instruction.

[0055] When a cleaning operation is required, the control system sends an elongation instruction to the second electric control telescopic rod 14. The top end of the second electric control telescopic rod 14 pushes the lifting plate 13 to slide upward along the guide rod. The guide rod plays a guiding role to ensure that the lifting plate 13 remains stable during the lifting process and does not deviate. As the lifting plate 13 rises, components such as the spiral follower assembly installed on the bottom surface of the lifting plate 13 also rise, preparing for the subsequent cleaning mechanism to enter the torch tube.

[0056] After the cleaning is completed, the second electric control telescopic rod 14 receives a contraction instruction, driving the lifting plate 13 to slide downward along the guide rod and return to the initial lower position for the next operation or to remove the torch tube.

[0057] The insertion rod 15 is rotatably connected to the bottom surface of the lifting plate 13. Initially, the insertion rod 15 is in a higher position, and the spiral strips on its outer wall correspond to but do not contact the spiral grooves on the inner wall of the guide sleeve 16 on the support plate 12, waiting for the lifting plate 13 to drive it down to a suitable position.

[0058] When the lifting plate 13 descends, the insertion rod 15 descends accordingly, and the spiral strips on the outer wall of the insertion rod 15 gradually enter the spiral grooves on the inner wall of the guide sleeve 16. Due to the cooperation between the spiral strips and the spiral grooves, the insertion rod 15 will rotate during the descent of the lifting plate 13. As the lifting plate 13 continues to descend, the insertion rod 15 rotates while continuing to extend downward into the cleaning tank 4, thereby driving components such as the telescopic frame, cleaning brush, and flushing assembly installed at the bottom end of the insertion rod 15 to rotate and descend while entering the torch tube for cleaning operations.

[0059] After the cleaning is completed, the lifting plate 13 rises, and the insertion rod 15 rotates in the opposite direction and rises under the interaction of the spiral strips and the spiral grooves, returning to the initial higher position to prepare for the next cleaning.

[0060] For a further optimized solution, several groups of spiral follower components are provided on the bottom surface of the lifting plate 13. The spiral follower component includes a plug rod 15 rotatably connected to the bottom surface of the lifting plate 13. A spiral strip is fixed to the outer wall of the plug rod 15. A guide sleeve 16 is vertically and fixedly connected to the support plate 12. A spiral groove is formed in the inner wall of the guide sleeve 16. The spiral strip is arranged corresponding to the spiral groove. One end of the plug rod 15 passes through the top of the cleaning tank 1 and extends into the cleaning tank 4.

[0061] For a further optimized solution, the telescopic frame includes a frame body 17. Connecting rods 18 are symmetrically and rotatably connected to the frame body 17. The connecting rods 18 are rotatably connected to the side wall of the plug rod 15. A sliding seat 19 is vertically slidably connected to the plug rod 15. A connecting pipe I 20 is rotatably connected to the sliding seat 19. A connecting pipe II 21 is rotatably connected to the frame body 17. An installation rod is arranged between the connecting pipe I 20 and the connecting pipe II 21. The installation rod is slidably connected to the connecting pipe I 20 and the connecting pipe II 21 respectively. A first spring 22 is sleeved on the installation rod. Two ends of the first spring 22 are respectively fixed to the connecting pipe I 20 and the connecting pipe II 21. A fixed seat 23 is fixedly connected to the outer wall of the plug rod 15. A plug-in telescopic rod 24 is fixed between the fixed seat 23 and the sliding seat 19. A second spring 25 is sleeved on the plug-in telescopic rod 24. The second spring 25 is fixed to the plug-in telescopic rod 24 and the sliding seat 19. The cleaning brush is installed on the frame body 17.

[0062] The frame body 17 is rotatably connected to the side wall of the plug rod 15 through the connecting rod 18. The sliding seat 19 is sleeved on the plug rod 15. Initially, the sliding seat 19 is located at a higher position on the plug rod 15. The plug-in telescopic rod 24 is in a contracted state. The first spring 22 and the second spring 25 are also in a natural state. The cleaning brush is located at a suitable position waiting to enter the torch tube.

[0063] When the plug rod 15 descends into the torch tube under the action of the spiral follower component, due to the limitation of the inner diameter of the torch tube, the frame body 17 is squeezed by the inner wall of the torch tube, and the connecting rod 18 rotates, pushing the frame body 17 to expand to both sides. At the same time, the frame body 17 drives the connecting pipe II 21 to rotate, and the connecting pipe I 20 also rotates under the drive of the sliding seat 19. The installation rod slides in the connecting pipe I 20 and the connecting pipe II 21, and the first spring 22 is stretched, generating an elastic restoring force. In addition, the sliding seat 19 slides downward on the plug rod 15, the plug-in telescopic rod 24 extends, and the second spring 25 is also stretched, further providing elastic buffering, so that the telescopic frame can smoothly adapt to torch tubes with different inner diameters, ensuring that the cleaning brush can closely fit the inner wall of the torch tube.

[0064] Driven by the rotary lifting mechanism, the telescopic frame rotates and lifts along with the plug rod 15, and the cleaning brush brushes the inner wall of the torch tube. Due to the elastic action of the first spring 22 and the second spring 25, the cleaning brush can always maintain good contact with the inner wall of the torch tube, improving the cleaning effect.

[0065] After the cleaning is completed, the insertion rod 15 rises. Under the elastic restoring forces of the first spring 22 and the second spring 25, the sliding seat 19 slides upward, the plug-in telescopic rod 24 contracts, the mounting rod slides reversely in the connecting pipe I 20 and the connecting pipe II 21, the connecting rod 18 rotates reversely, and the frame body 17 contracts toward the middle, returning to the initial state, facilitating the removal from the torch tube.

[0066] For a further optimized solution, the flushing assembly includes a spray pipe 26 fixedly connected to the frame body 17. A spray head is installed at the end of the spray pipe 26. One end of the spray pipe 26 is fixedly connected to a circulation pipe, one end of the circulation pipe is communicated with the cleaning tank 4, and a circulation pump is installed on the circulation pipe.

[0067] The spray pipe 26 is fixedly connected to the frame body 17, the spray head is installed at the end of the spray pipe 26, one end of the circulation pipe is fixedly connected to the spray pipe 26, the other end is communicated with the cleaning tank 4, and the circulation pump is installed on the circulation pipe. Initially, the circulation pump is in the closed state, waiting for the cleaning instruction.

[0068] When the cleaning brush brushes the inner wall of the torch tube, the control system starts the circulation pump. The circulation pump sucks the cleaning liquid in the cleaning tank 4 into the spray pipe 26 through the circulation pipe, and then sprays it out from the spray head to flush the inner wall of the torch tube. Since the spray pipe 26 enters the interior of the torch tube together with the telescopic frame, it can accurately flush the inner wall of the torch tube, wash away the dirt and impurities brushed by the cleaning brush, and the flushing cleaning liquid flows back to the cleaning tank 4 with the dirt and is discharged through the discharge pipe.

[0069] After the cleaning is completed, the control system turns off the circulation pump, stops the flushing operation, and waits for the next cleaning task.

[0070] An ICP torch tube cleaning method for reducing detection interference includes the following steps:

[0071] Step 1, place the torch tube in a muffle furnace at 700 - 800 °C and heat it for 10 - 15 minutes;

[0072] Step 2, open the muffle furnace for 10 s to allow air to enter the muffle furnace, and then heat it up to 700 - 800 °C;

[0073] Step 3, repeat Step 1 and Step 2 twice to remove the carbon deposits in the torch tube;

[0074] Step 4, after the muffle furnace cools down to room temperature, take out the torch tube, clean it with deionized water, and dry it;

[0075] Step 5, place the torch tube on the placement rack in the cleaning tank 4, add cleaning agent to submerge the torch tube, and close the box door 2;

[0076] Step 6: The lifting frame controls the spiral follower assembly and the telescopic frame at the bottom of the spiral follower assembly to enter the rectangular pipe. The lifting assembly repeats the lifting operation, synchronously driving the spiral follower assembly to rotate spirally to brush the inner wall of the rectangular pipe. At the same time, the flushing assembly flushes the inner wall of the rectangular pipe in a small disturbance manner.

[0077] Step 7: After the cleaning is completed, take out the torch pipe, clean it with deionized water, dry it, and drain the cleaning liquid in the cleaning tank 4 to facilitate the next cleaning.

[0078] It should be noted that the device in this embodiment is made of anti-corrosion materials or covered with an anti-corrosion coating.

[0079] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, 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 construed as a limitation of the present invention.

[0080] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. An ICP torch tube cleaning device for reducing detection interference, characterized in that, Comprising: A cleaning tank (1) with a door (2) hinged to the side of the cleaning tank (1); A lifting assembly. A sliding table (3) is horizontally slidably connected in the cleaning tank (1). The lifting assembly is installed on the top of the sliding table (3). A cleaning tank (4) is installed on the top of the lifting assembly. A discharge pipe is installed on the side of the cleaning tank (4); A placement rack installed in the cleaning tank (4). The torch tube is placed on the placement rack. There is a gap between the bottom of the placement rack and the bottom of the cleaning tank (4); A rotary lifting mechanism, which includes a lifting frame and a spiral follower assembly. The lifting frame is fixed on the top of the cleaning tank (1). The spiral follower assembly is rotatably connected to the lifting frame, and one end of the spiral follower assembly extends into the cleaning tank (1); A cleaning mechanism, which includes a telescopic frame, a cleaning brush and a flushing assembly. The telescopic frame is fixed at the bottom end of the spiral follower assembly. The cleaning brush is installed on the telescopic frame. The flushing assembly is installed on the telescopic frame. The telescopic frame extends into the torch tube.

2. The ICP torch tube cleaning device for reducing detection interference according to claim 1, characterized in that: The lifting assembly includes a first electric control lifting rod (5). A support block (6) is fixedly connected to the top of the sliding table (3). The first electric control telescopic rod is vertically fixedly connected to the top of the support block (6). The top end of the first electric control lifting rod (5) is fixed to the bottom of the cleaning tank (4). Support arms (7) are symmetrically hinged to the bottom of the cleaning tank (4). One end of the support arm (7) is hinged with a slider (8). A slide bar (9) is horizontally fixedly connected to the support block (6). The slider (8) is slidably connected to the slide bar (9).

3. The ICP torch tube cleaning device for reducing detection interference according to claim 1, characterized in that: The placement rack includes a top plate (10) and a bottom plate (11). A number of rows of placement holes are formed in the top plate (10). The diameters of the placement holes in the same row increase in sequence. A support rod is vertically fixedly connected to the bottom surface of the top plate (10). The support rod is fixed to the bottom of the cleaning tank (4). The bottom plate (11) is arranged below the top plate (10), and there is a gap between the bottom plate (11) and the bottom of the cleaning tank (4). The bottom plate (11) is a perforated plate. A number of rubber rings are fixed on the top surface of the bottom plate (11). The rubber rings are arranged corresponding to the placement holes.

4. The ICP torch tube cleaning device for reducing detection interference according to claim 1, characterized in that: The lifting frame includes a support plate (12) and a lifting plate (13). The support plate (12) is horizontally arranged on the top of the cleaning tank (1). Legs are fixedly connected between the support plate (12) and the top surface of the cleaning tank (1). A guide rod is vertically fixedly connected to the top surface of the support plate (12). The lifting plate (13) is slidably connected to the guide rod. A second electric control telescopic rod (14) is fixedly connected to the top surface of the support plate (12). The top end of the second electric control telescopic rod (14) is fixed to the bottom surface of the lifting plate (13).

5. An ICP torch tube cleaning device for reducing detection interference according to claim 4, characterized in that: A number of groups of the spiral follower assemblies are arranged on the bottom surface of the lifting plate (13). Each spiral follower assembly includes a plug rod (15) rotatably connected to the bottom surface of the lifting plate (13). A spiral strip is fixed to the outer wall of the plug rod (15). A guide sleeve (16) is vertically and fixedly connected to the support plate (12). A spiral groove is formed in the inner wall of the guide sleeve (16). The spiral strip is arranged corresponding to the spiral groove. One end of the plug rod (15) passes through the top of the cleaning tank (1) and extends into the cleaning tank (4).

6. An ICP torch cleaning device for reducing detection interference according to claim 4, characterized in that: The telescopic frame includes a frame body (17). Connecting rods (18) are symmetrically and rotatably connected to the frame body (17). The connecting rods (18) are rotatably connected to the side wall of the plug rod (15). A sliding seat (19) is vertically slidably connected to the plug rod (15). A connecting pipe I (20) is rotatably connected to the sliding seat (19). A connecting pipe II (21) is rotatably connected to the frame body (17). An installation rod is arranged between the connecting pipe I (20) and the connecting pipe II (21). The installation rod is slidably connected to the connecting pipe I (20) and the connecting pipe II (21) respectively. A first spring (22) is sleeved on the installation rod. Two ends of the first spring (22) are fixed to the connecting pipe I (20) and the connecting pipe II (21) respectively. A fixed seat (23) is fixedly connected to the outer wall of the plug rod (15). A plug-in telescopic rod (24) is fixed between the fixed seat (23) and the sliding seat (19). A second spring (25) is sleeved on the plug-in telescopic rod (24). The second spring (25) is fixed to the plug-in telescopic rod (24) and the sliding seat (19). The cleaning brush is installed on the frame body (17).

7. An ICP torch tube cleaning device for reducing detection interference according to claim 6, characterized in that: The flushing assembly includes a spray pipe (26) fixedly connected to the frame body (17). A spray head is installed at the end of the spray pipe (26). One end of the spray pipe (26) is fixed to a circulation pipe. One end of the circulation pipe is communicated with the cleaning tank (4). A circulation pump is installed on the circulation pipe.

8. A method for cleaning an ICP torch tube to reduce detection interference, based on the ICP torch tube cleaning device for reducing detection interference according to any one of claims 1-7, characterized in that, It includes the following steps: Step 1: Place the torch tube in a muffle furnace at 700 - 800 °C and heat it for 10 - 15 minutes; Step 2: Open the muffle furnace for 10 s to allow air to enter the muffle furnace, and then heat it up to 700 - 800 °C; Step 3: Repeat Step 1 and Step 2 twice to remove the carbon deposits on the torch tube; Step 4: After the muffle furnace cools down to room temperature, take out the torch tube, clean it with deionized water, and dry it; Step 5: Place the torch tube on the placement rack in the cleaning tank (4), add cleaning agent to submerge the torch tube, and close the box door (2); Step 6: The lifting frame controls the spiral follower assembly and the telescopic frame at the bottom of the spiral follower assembly to enter the torch tube. The lifting assembly repeats the lifting work, and simultaneously drives the spiral follower assembly to rotate spirally to brush the inner wall of the torch tube. At the same time, the flushing assembly flushes the inner wall of the torch tube in a small disturbance manner; Step 7: After the cleaning is completed, take out the torch tube, clean it with deionized water, dry it, and drain the cleaning liquid in the cleaning tank (4) for the next cleaning.

Images