A sampling device for automatic pretreatment of ammonia nitrogen in water

Abstract

The present invention discloses a sampling device for automatic pretreatment of ammonia nitrogen in water, specifically relating to the technical field of sampling devices, comprising a box body, an X-axis position controller being provided on the rear side of the top of the box body, a Y-axis position controller being provided on one side of the top of the box body, a chute being provided on one side wall of the X-axis position controller, a robotic arm being installed inside the chute, and a dosing metering pump being fixedly installed on the front side of the robotic arm. The present invention uses a sample tray capable of storing multiple samples to automatically add a fixed amount of flocculation reagent to a water sample, stirs and flocculates and precipitates through stirring and oscillation, thereby solving the problems of slow speed and low efficiency of current manual dosing flocculation and precipitation, greatly saving manpower and improving efficiency, locating the sample position through the sample position controller, facilitating sampling of the sampling system after flocculation and precipitation, and realizing combined use with corresponding detection instruments, thereby fully realizing the automation of the ammonia nitrogen detection process.

Description

Technical Field

[0001] The invention relates to the field of sampling devices, in particular to a sampling device for automatic pretreatment of ammonia nitrogen in water. Background Art

[0002] Ammonia nitrogen has a great impact on human health and the ecological environment, and the ammonia nitrogen content is an important indicator for evaluating water quality. The current methods for detecting ammonia nitrogen include Nessler's reagent spectrophotometry, salicylic acid spectrophotometry, distillation-neutralization titration, ammonia sensitive electrode method, ammonium ion selective electrode method, conductivity method, and flow injection method. If the water sample is colored or turbid or contains other interfering substances, it will affect the determination of ammonia nitrogen. Therefore, in order to improve the accuracy of the test results, appropriate pretreatment is required when detecting ammonia nitrogen. For cleaner water, flocculation precipitation can be used. For seriously polluted water or industrial wastewater, distillation is used to eliminate interference. The current pretreatment method for determining ammonia nitrogen in water samples is to manually add different flocculants, and then filter with filter paper or centrifuge. The speed is slow, the efficiency is low, and the actual application effect is not ideal.

[0003] Therefore, it is necessary to propose a sampling device for automatic pretreatment of ammonia nitrogen in water to solve the above problems. Summary of the Invention

[0004] The main purpose of the present invention is to provide a sampling device for automatic pretreatment of ammonia nitrogen in water, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A sampling device for automatic pretreatment of ammonia and nitrogen in water, comprising a box, an X-axis position controller and a Y-axis position controller installed on the top of the box, a mechanical arm movably connected to the top of the box, the X-axis position controller and the Y-axis position controller both being transmission-connected to the mechanical arm, a dosing metering pump and a sampling metering pump symmetrically installed on both sides of the bottom of the mechanical arm, and a cleaning tank and a sample bottle installed on the top of the box;

[0007] An electromagnetic stirrer is installed on the top of the box, a sample tray is installed on the top of the electromagnetic stirrer, a sample tube is installed in the inner cavity of the sample tray, blocks are inserted in the inner cavities on both sides of the sample tray, and reinforcement blocks are symmetrically and movably connected at both ends of the blocks. A sample mounting groove is opened on the top of the sample tray, and auxiliary positioning bars are symmetrically and movably connected around the inner cavity of the sample mounting groove.

[0008] Preferably, a slide groove is provided on the top of the X-axis position controller and the Y-axis position controller, the robotic arm is movably connected in the inner cavity of the slide groove, the cleaning tank is located at the bottom of the dosing metering pump and the sampling metering pump, the sample tube is inserted into the inner cavity of the sample tray through the sample mounting groove, and the auxiliary positioning strip is attached to the outer wall of the sample tube.

[0009] Preferably, a magnetic stirrer is provided at the bottom of the inner cavity of each sample tube, and there are two sample bottles, both of which are installed on the top of the box.

[0010] Preferably, the electromagnetic stirrer is arranged on both sides of the sample tray, a through slot is opened in the center of the top of the electromagnetic stirrer, a first spring is installed on one side of the inner cavity of the through slot, and a connecting handle is installed on the other side of the first spring, and the connecting handle is movably connected in the inner cavity of the through slot.

[0011] Preferably, the other side of the connecting handle is installed on the outer wall of the card block, and the card block and the reinforcement block are movably connected in the inner cavity of the electromagnetic stirrer. A fixing rod is installed in the inner cavity of the card block, and a second spring is wound around the outer wall of the fixing rod. One end of the second spring is installed in the inner cavity of the card block, and the other end of the second spring is installed with a first limit block. The first limit block is installed at one end of the reinforcement block, and the side of the reinforcement block close to the electromagnetic stirrer is inclined, and the reinforcement block fits in the inner cavity of the sample tray.

[0012] Preferably, three second limiting blocks are respectively installed on both sides of the auxiliary positioning strip, a guide rod is installed in the inner cavity of the sample tray, and the second limiting blocks are movably connected in the inner cavity of the sample tray and sleeved on the outer wall of the guide rod.

[0013] Preferably, a third spring is wound around the outer wall of the middle guide rod, one end of the third spring is mounted on the outer wall of the middle second limiting block, and the other end of the third spring is mounted in the inner cavity of the sample tray.

[0014] Preferably, a torsion shaft is rotatably connected in the inner cavity of the auxiliary positioning strip, auxiliary positioning blocks are symmetrically installed on both sides of the torsion shaft, the auxiliary positioning block is rotatably connected to a roller on the side away from the torsion shaft, a slot is provided on the side of the auxiliary positioning strip close to the center of the sample mounting groove, the auxiliary positioning block is movably connected in the inner cavity of the slot, and one of the auxiliary positioning blocks is attached to the outer wall of the sample tube through the roller.

[0015] Compared with the prior art, the present invention provides a sampling device for automatic pretreatment of ammonia nitrogen in water, which has the following beneficial effects:

[0016] The sampling device for automatic pretreatment of ammonia nitrogen in water quality uses a sample tray that can store multiple sample tubes to automatically add a fixed amount of flocculation reagent to the water sample, and performs stirring and flocculation precipitation through stirring and oscillation, thereby solving the problems of slow speed and low efficiency of current manual dosing flocculation precipitation, which can greatly save manpower and improve efficiency. The position of the sample tube is positioned by the Y-axis position controller and the X-axis position controller, which facilitates sampling of the sampling system after flocculation precipitation, and can be used in conjunction with corresponding detection instruments to fully realize the automation of the ammonia nitrogen detection process.

[0017] The sampling device for automatic pretreatment of ammonia and nitrogen in water can drive the block to move by moving the connecting handle. When it is moved to the side away from the sample tray, it can be retracted into the inner cavity of the electromagnetic stirrer. At this time, the sample tray can be removed. Under normal circumstances, the first spring will bounce the block into the inner cavity of the sample tray through the connecting handle, so that the sample tray can be positioned. When stirring the sample tray, it can prevent the sample tray from shaking to a large extent, and it is also convenient for its installation and disassembly.

[0018] The sampling device for automatic pretreatment of ammonia and nitrogen in water can always bounce the first limit block outward through the second spring. After the first limit block enters the inner cavity of the sample tray, it can play a reinforcement effect. Through the inclined surface on the side of the first limit block, after pulling the connecting handle, the first limit block can be easily retracted into the inner cavity of the card block, thereby facilitating the disassembly of the sample tray.

[0019] The sampling device for automatic pretreatment of ammonia and nitrogen in water can fit tightly around the sample tube through the auxiliary positioning strips arranged around the inner cavity of the sample installation groove, and can prevent the sample tube from shaking greatly when stirring. At the same time, it can adapt to sample tubes of various sizes for installation, thereby achieving a better adaptation effect and effectively increasing the sampling range. The auxiliary positioning block can rotate outward at all times through the provided torsion shaft, and cooperate with the provided roller to fit tightly against the outer wall of the sample tube after the sample tube enters the inner cavity of the sample installation groove, which can further strengthen the positioning of the sample tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic diagram of the overall side structure of the present invention.

[0022] Figure 3 It is a schematic diagram of the overall rear view structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the overall top view of the structure of the present invention;

[0024] Figure 5 It is a schematic structural diagram of the sample tray of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the auxiliary positioning strip of the present invention.

[0026] In the figure: 1. Box; 2. X-axis position controller; 3. Y-axis position controller; 4. Slide; 5. Robotic arm; 6. Dosing metering pump; 7. Sampling metering pump; 8. Cleaning tank; 9. Electromagnetic stirrer; 10. Sample tray; 11. Sample tube; 12. Sample bottle; 13. Through slot; 14. First spring; 15. Connecting handle; 16. Block; 17. Reinforcement block; 18. First limit block; 19. Fixing rod; 20. Second spring; 21. Sample mounting slot; 22. Auxiliary positioning strip; 23. Second limit block; 24. Guide rod; 25. Third spring; 26. Torque shaft; 27. Auxiliary positioning block; 28. Roller. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0028] like Figures 1-4 As shown, a sampling device for automatic pretreatment of ammonia and nitrogen in water comprises a box body 1, an X-axis position controller 2 and a Y-axis position controller 3 are installed on the top of the box body 1, a mechanical arm 5 is movably connected to the top of the box body 1, the X-axis position controller 2 and the Y-axis position controller 3 are both transmission-connected to the mechanical arm 5, a dosing metering pump 6 and a sampling metering pump 7 are symmetrically installed on both sides of the bottom of the mechanical arm 5, a cleaning tank 8 and a sample bottle 12 are installed on the top of the box body 1, a slide 4 is provided on the top of the X-axis position controller 2 and the Y-axis position controller 3, the mechanical arm 5 is movably connected in the inner cavity of the slide 4, the cleaning tank 8 is located at the bottom of the dosing metering pump 6 and the sampling metering pump 7, the sample tube 11 is inserted into the inner cavity of the sample tray 10 through the sample mounting groove 21, the auxiliary positioning strip 22 is attached to the outer wall of the sample tube 11, and a magnetic stirring bar is provided at the bottom of the inner cavity of the sample tube 11. There are two sample bottles 12, and both sample bottles 12 are mounted on the top of the box body 1. Example

[0029] like Figure 1 、 Figure 4 、 Figure 5 、 Figure 6As shown, a sampling device for automatic pretreatment of ammonia nitrogen in water quality is provided. An electromagnetic stirrer 9 is installed on the top of the box 1, a sample tray 10 is installed on the top of the electromagnetic stirrer 9, a sample tube 11 is installed in the inner cavity of the sample tray 10, and a clamping block 16 is inserted into the inner cavity on both sides of the sample tray 10. The two ends of the clamping block 16 are symmetrically connected with a reinforcement block 17. A sample mounting groove 21 is provided on the top of the sample tray 10, and auxiliary positioning strips 22 are symmetrically connected around the inner cavity of the sample mounting groove 21. The electromagnetic stirrer 9 is arranged on both sides of the sample tray 10. A through slot 13 is provided in the middle of the top, a first spring 14 is installed on one side of the inner cavity of the through slot 13, a connecting handle 15 is installed on the other side of the first spring 14, the connecting handle 15 is movably connected to the inner cavity of the through slot 13, the other side of the connecting handle 15 is installed on the outer wall of the block 16, the block 16 and the reinforcement block 17 are both movably connected to the inner cavity of the electromagnetic stirrer 9, a fixing rod 19 is installed in the inner cavity of the block 16, the outer wall of the fixing rod 19 is wound with a second spring 20, one end of the second spring 20 is installed in the inner cavity of the block 16, the second spring 20 A first limit block 18 is installed at the other end, and the first limit block 18 is installed at one end of the reinforcement block 17. The side of the reinforcement block 17 close to the electromagnetic stirrer 9 is inclined. The reinforcement block 17 fits in the inner cavity of the sample tray 10. Three second limit blocks 23 are installed on both sides of the auxiliary positioning bar 22. A guide rod 24 is installed in the inner cavity of the sample tray 10. The second limit block 23 is movably connected to the inner cavity of the sample tray 10 and is sleeved on the outer wall of the guide rod 24. The outer wall of the middle guide rod 24 is wrapped with a third spring 25. One end of the third spring 25 is installed The outer wall of the middle second limit block 23 and the other end of the third spring 25 are installed in the inner cavity of the sample tray 10. The inner cavity of the auxiliary positioning bar 22 is rotatably connected to the torsion shaft 26. Auxiliary positioning blocks 27 are symmetrically installed on both sides of the torsion shaft 26. The side of the auxiliary positioning block 27 away from the torsion shaft 26 is rotatably connected to the roller 28. A slot is provided on the side of the auxiliary positioning bar 22 close to the center of the sample mounting groove 21. The auxiliary positioning block 27 is movably connected to the inner cavity of the slot. One auxiliary positioning block 27 is attached to the outer wall of the sample tube 11 through the roller 28;

[0030] By moving the connecting handle 15, the clamping block 16 can be driven to move. When it is moved to the side away from the sample tray 10, it can be retracted into the inner cavity of the electromagnetic stirrer 9. At this time, the sample tray 10 can be removed. In normal conditions, the first spring 14 will bounce the clamping block 16 into the inner cavity of the sample tray 10 through the connecting handle 15, so that the sample tray 10 can be positioned. When stirring the sample tray 10, it can prevent the sample tray 10 from shaking to a large extent, and it is also convenient for installing and removing the sample tray 10.

[0031] The second spring 20 is provided to constantly push the first limit block 18 outward, and after the first limit block 18 enters the inner cavity of the sample tray 10, it can play a reinforcing role. Through the inclined surface on the side of the first limit block 18, after pulling the connecting handle 15, the first limit block 18 can be easily retracted into the inner cavity of the clamping block 16, thereby facilitating the disassembly of the sample tray 10.

[0032] The auxiliary positioning strips 22 arranged around the inner cavity of the sample mounting groove 21 can fit tightly around the sample tube 11, and can prevent it from shaking greatly when stirring it. At the same time, it can adapt to sample tubes 11 of various sizes for installation, thereby achieving a better adaptation effect and effectively increasing the sampling range. The torsion shaft 26 is provided, so that the auxiliary positioning block 27 can always rotate outward, and cooperate with the roller 28. After the sample tube 11 enters the inner cavity of the sample mounting groove 21, it can fit tightly against the outer wall of the sample tube 11, which can further strengthen its positioning. Example

[0033] like Figure 1-6As shown, a sampling device for automatic pretreatment of ammonia nitrogen in water quality is shown. The mechanical arm 5 is installed in the slide 4. The X-axis position controller 2 and the Y-axis position controller 3 are used to move the mechanical arm 5 horizontally and vertically. The dosing metering pump 6 and the sampling metering pump 7 are installed on the mechanical arm 5. The dosing metering pump 6 is used to add coagulant to the sample tube 11. The sampling metering pump 7 is used to absorb the pretreated water sample. The cleaning tank 8 contains clean water to facilitate cleaning the pipeline during the switching process of different reagents. The box body 1 contains an electromagnetic stirrer 9 and has multiple sample trays 10 on the upper side for placing sample tubes 11. The sample tube 1 1 contains the water sample to be treated, and a magnetic stirrer is added therein. After the coagulant is added, magnetic stirring can be performed to mix the sample. At the same time, a sample bottle 12 is installed on the box body 1 for containing the coagulant. When the present invention is in use, the sample tube 11 containing the water sample to be treated is placed in the sample tray 10. During the pretreatment process, the X-axis position controller 2 and the Y-axis position controller 3 work together, and the mechanical arm 5 moves in the XY axis direction in the slide 4. The dosing metering pump 6 is used to take the medicine from the sample bottle 12 containing the coagulant, and a quantitative coagulant is added to the sample tube 11. At the same time, By starting the magnetic stirring device 9, the water sample is stirred and shaken to mix it, the electromagnetic stirrer 9 is turned off, and the flocculation and sedimentation effect is achieved after standing, and then the sampling process is carried out, and the sampling metering pump 7 is controlled to sample the supernatant water quality of the sample tube 11 and detect it. The precise metering pump 6 and the sampling metering pump 7 can be cleaned by the cleaning tank 8 when switching between different reagents. The present invention adopts the X-axis position controller 2 and the Y-axis position controller 3 for precise positioning, and after absorbing the coagulant, it is accurately added to the sample to be treated and stirred for pretreatment. The present invention has a cleaning tank 8, which can be used in the reagent Cleaning is performed when switching. After pretreatment, the present invention can accurately locate and sample the supernatant and perform subsequent ammonia nitrogen detection. The present invention uses a sample tray 10 that can store multiple samples to automatically add a fixed amount of flocculation reagent to the water sample, and stir and flocculate and precipitate through stirring and oscillation, solving the problems of slow speed and low efficiency of current manual dosing flocculation and precipitation, which can greatly save manpower and improve efficiency. The sample position is located by the sample position controller, which is convenient for sampling the sampling system after flocculation and precipitation, and can be used in conjunction with corresponding detection instruments to fully realize the automation of the ammonia nitrogen detection process.

[0034] It should be noted that the present invention is a sampling device for automatic pretreatment of ammonia nitrogen in water. When in use, a fixed amount of flocculation reagent is automatically added to the water sample through a sample tray 10 that can store multiple sample tubes 11. Stirring and flocculation precipitation are performed through stirring and oscillation, solving the problems of slow speed and low efficiency of current manual dosing flocculation precipitation, which can greatly save manpower and improve efficiency. The position of the sample tube 11 is positioned by the X-axis position controller 2 and the Y-axis position controller 3, which facilitates sampling of the sampling system after flocculation precipitation. It can be used in conjunction with corresponding detection instruments to fully realize the automation of the ammonia nitrogen detection process.

[0035] When installing the sample tube 11, the sample tube 11 is directly inserted into the inner cavity of the sample installation groove 21. The third spring 25 will move the auxiliary positioning bar 22 outward through the second limit block 23, so that the auxiliary positioning bar 22 can fit the outer wall of the sample tube 11. When the bottom of the sample tube 11 contacts the auxiliary positioning block 27 at the top, it will be rotated to the bottom. When the sample tube 11 completely enters the inner cavity of the sample installation groove 21, the auxiliary positioning block 27 at the bottom will fit tightly against the side of the sample tube 11. When the sample tray 10 needs to be disassembled, move the connecting handle 15 to drive the card block 16 to move. After the card block 16 drives the reinforcement block 17 to move to the side of the electromagnetic stirrer 9, the card block 16 will contact it and retract into the inner cavity of the electromagnetic stirrer 9. At this time, the sample tray 10 can be removed.

[0036] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling device for automatic pretreatment of ammonia nitrogen in water, comprising a housing (1), characterized in that: An X-axis position controller (2) and a Y-axis position controller (3) are installed on the top of the box (1); a mechanical arm (5) is movably connected to the top of the box (1); the X-axis position controller (2) and the Y-axis position controller (3) are both transmission-connected to the mechanical arm (5); a dosing metering pump (6) and a sampling metering pump (7) are symmetrically installed on both sides of the bottom of the mechanical arm (5); a cleaning tank (8) and a sample bottle (12) are installed on the top of the box (1); An electromagnetic stirrer (9) is installed on the top of the box (1), a sample tray (10) is installed on the top of the electromagnetic stirrer (9), a sample tube (11) is installed in the inner cavity of the sample tray (10), clamping blocks (16) are inserted into the inner cavities on both sides of the sample tray (10), and reinforcing blocks (17) are symmetrically and movably connected at both ends of the clamping blocks (16), a sample installation groove (21) is opened on the top of the sample tray (10), and auxiliary positioning bars (22) are symmetrically and movably connected around the inner cavity of the sample installation groove (21); The tops of the X-axis position controller (2) and the Y-axis position controller (3) are both provided with a slide groove (4), the robotic arm (5) is movably connected in the inner cavity of the slide groove (4), the cleaning tank (8) is located at the bottom of the dosing metering pump (6) and the sampling metering pump (7), the sample tube (11) is inserted into the inner cavity of the sample tray (10) through the sample mounting groove (21), and the auxiliary positioning strip (22) is attached to the outer wall of the sample tube (11); The bottom of the inner cavity of the sample tube (11) is provided with a magnetic stirrer, there are two sample bottles (12), and the two sample bottles (12) are installed on the top of the box (1); The electromagnetic stirrer (9) is arranged on both sides of the sample tray (10), a through slot (13) is provided in the center of the top of the electromagnetic stirrer (9), a first spring (14) is installed on one side of the inner cavity of the through slot (13), and a connecting handle (15) is installed on the other side of the first spring (14), and the connecting handle (15) is movably connected in the inner cavity of the through slot (13); The other side of the connecting handle (15) is mounted on the outer wall of the clamping block (16), and the clamping block (16) and the reinforcing block (17) are both movably connected in the inner cavity of the electromagnetic stirrer (9). A fixing rod (19) is mounted in the inner cavity of the clamping block (16), and a second spring (20) is wound around the outer wall of the fixing rod (19). One end of the second spring (20) is mounted in the inner cavity of the clamping block (16), and the other end of the second spring (20) is mounted with a first limiting block (18), and the first limiting block (18) is mounted on one end of the reinforcing block (17). The side of the reinforcing block (17) close to the electromagnetic stirrer (9) is inclined, and the reinforcing block (17) fits in the inner cavity of the sample tray (10).

2. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 1, characterized in that: Three second limiting blocks (23) are respectively installed on both sides of the auxiliary positioning strip (22), a guide rod (24) is installed in the inner cavity of the sample tray (10), and the second limiting blocks (23) are movably connected in the inner cavity of the sample tray (10) and sleeved on the outer wall of the guide rod (24).

3. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 2, characterized in that: A third spring (25) is wound around the outer wall of the middle guide rod (24), one end of the third spring (25) is mounted on the outer wall of the middle second limit block (23), and the other end of the third spring (25) is mounted in the inner cavity of the sample tray (10).

4. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 3, characterized in that: A torsion shaft (26) is rotatably connected in the inner cavity of the auxiliary positioning strip (22), and auxiliary positioning blocks (27) are symmetrically installed on both sides of the torsion shaft (26). The side of the auxiliary positioning block (27) away from the torsion shaft (26) is rotatably connected to a roller (28). A slot is provided on the side of the auxiliary positioning strip (22) close to the center of the sample mounting groove (21), and the auxiliary positioning block (27) is movably connected in the inner cavity of the slot. One of the auxiliary positioning blocks (27) is attached to the outer wall of the sample tube (11) through the roller (28).

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