Sampling device for automatic pretreatment of ammonia nitrogen in water

Abstract

The invention discloses a sampling device for automatic pretreatment of ammonia nitrogen in water, and particularly relates to the technical field of sampling devices.The sampling device comprises a box body, an X-axis position controller is arranged on the rear side of the top of the box body, a Y-axis position controller is arranged on one side of the top of the box body, and a sliding groove is formed in one side wall of the X-axis position controller; a mechanical arm is installed in the sliding groove, and a dosing metering pump is fixedly installed on the front side of the mechanical arm. Through the sample disc capable of storing a plurality of samples, a fixed amount of flocculation reagent is automatically added into a water sample, stirring and flocculation precipitation are carried out through stirring and oscillation, the problems of low speed and low efficiency of current manual dosing flocculation precipitation are solved, manpower can be greatly saved, the efficiency is improved, and the labor intensity is reduced. The position of the sample is positioned through the sample position controller, so that the sampling of the sampling system after flocculent precipitation is facilitated, the combined use with a corresponding detection instrument is realized, and the automation of the ammonia nitrogen detection process is completely realized.

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 ecological environment, and ammonia nitrogen content is an important indicator for evaluating water quality. At present, the detection methods of 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 and contains some 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 items. For cleaner water, flocculation precipitation method can be used. For seriously polluted water or industrial wastewater, distillation method is used to eliminate interference. At present, the pretreatment method for determining ammonia nitrogen items in water samples is to manually add different flocculation reagents, and then filter or centrifuge with filter paper. 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: A sampling device for automatic pretreatment of ammonia nitrogen in water, comprising a box, an X-axis position controller and a Y-axis position controller are installed on the top of the box, a mechanical arm is movably connected to the top of the box, the X-axis position controller and the Y-axis position controller are both transmission-connected to the mechanical arm, a dosing metering pump and a sampling metering pump are symmetrically installed on both sides of the bottom of the mechanical arm, and a cleaning tank and a sample bottle are installed on the top of the box; An electromagnetic stirrer is installed on the top of the box body, 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, reinforcement blocks are symmetrically and movably connected at both ends of the blocks, a sample installation groove is opened on the top of the sample tray, and auxiliary positioning strips are symmetrically and movably connected around the inner cavity of the sample installation groove.

[0006] 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 groove 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.

[0007] Preferably, a magnetic stirrer is provided at the bottom of the inner cavity of the sample tube, and there are two sample bottles, which are both installed on the top of the box.

[0008] Preferably, the electromagnetic stirrer is arranged on both sides of the sample plate, 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.

[0009] 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 a first limit block is installed on the other end of the second spring, and the first limit block is installed at one end of the reinforcement block. 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.

[0010] Preferably, three second limit 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 limit blocks are movably connected in the inner cavity of the sample tray and sleeved on the outer wall of the guide rod.

[0011] 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 limit block, and the other end of the third spring is mounted in the inner cavity of the sample tray.

[0012] 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, a side of the auxiliary positioning block away from the torsion shaft is rotatably connected to a roller, 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 a roller.

[0013] 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: The sampling device for automatic pretreatment of ammonia nitrogen in water quality can automatically add a fixed amount of flocculation reagent into the water sample through a sample tray that can store multiple sample tubes, and stir and flocculate and precipitate through stirring and oscillation, thereby 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 position of the sample tube is positioned through the Y-axis position controller and the X-axis position controller, which is convenient for sampling of the sampling system after flocculation and precipitation, and can be used in conjunction with corresponding detection instruments, thereby completely realizing the automation of the ammonia nitrogen detection process. The sampling device for automatic pretreatment of ammonia 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. In normal state, 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, the sample tray can be prevented from shaking to a large extent, and it is also convenient for installation and disassembly. The sampling device for automatic pretreatment of ammonia nitrogen in water can always bounce the first limit block outward through the second spring, and can play a reinforcement effect after the first limit block enters the inner cavity of the sample tray. 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. The sampling device for automatic pretreatment of ammonia nitrogen in water can fit tightly around the sample tube by means of auxiliary positioning strips arranged around the inner cavity of the sample installation groove, and can prevent the sample tube from shaking greatly when stirring the sample tube. At the same time, the device can be adapted 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 by means of the arranged torque shaft, and can cooperate with the arranged 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, thereby further achieving the effect of strengthening the positioning of the sample tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the overall side structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the overall rear view structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the overall top view structure of the present invention; Figure 5 It is a schematic diagram of the structure of the sample tray of the present invention; Figure 6 It is a structural schematic diagram of the auxiliary positioning strip of the present invention.

[0018] In the figure: 1. box; 2. X-axis position controller; 3. Y-axis position controller; 4. slide; 5. mechanical 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. clamping 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

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Example

[0020] like Figure 1-Figure 4 As shown, a sampling device for automatic pretreatment of ammonia 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 opened 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, a sample tube 11 is inserted into the inner cavity of the sample tray 10 through a sample mounting groove 21, an auxiliary positioning strip 22 is attached to the outer wall of the sample tube 11, a magnetic stirrer is arranged at the bottom of the inner cavity of the sample tube 11, and there are two sample bottles 12, both of which are installed on the top of the box body 1. Example

[0021] like Figure 1 , Figure 4 , Figure 5 , Figure 6As shown, a sampling device for automatic pretreatment of ammonia nitrogen in water is provided, wherein an electromagnetic stirrer 9 is installed on the top of a box body 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, blocks 16 are inserted into the inner cavities on both sides of the sample tray 10, and reinforcement blocks 17 are symmetrically and flexibly connected at both ends of the blocks 16, a sample installation groove 21 is provided on the top of the sample tray 10, and auxiliary positioning strips 22 are symmetrically and flexibly connected around the inner cavity of the sample installation groove 21, the electromagnetic stirrer 9 is arranged on both sides of the sample tray 10, and the electromagnetic stirrer 9 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 in 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 in the inner cavity of the electromagnetic stirrer 9, a fixing rod 19 is installed in the inner cavity of the block 16, a second spring 20 is wound around the outer wall of the fixing rod 19, one end of the second spring 20 is installed in the inner cavity of the block 16, and 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 strip 22. A guide rod 24 is installed in the inner cavity of the sample tray 10. The second limit block 23 is movably connected in 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 wound 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. A torsion shaft 26 is rotatably connected in the inner cavity of the auxiliary positioning bar 22. 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 with a roller 28. A slot is opened on the side of the auxiliary positioning bar 22 close to the center of the sample installation groove 21. The auxiliary positioning block 27 is movably connected in the inner cavity of the slot. An auxiliary positioning block 27 is attached to the outer wall of the sample tube 11 through the roller 28. 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 state, 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 disassembling the sample tray 10. The second spring 20 can always bounce 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 effect. 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, so as to facilitate the disassembly of the sample tray 10; 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, so as to achieve a better adaptation effect and effectively increase the sampling range. The auxiliary positioning block 27 can rotate outward at all times through the set torsion shaft 26, and cooperate with the set 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

[0022] like Figure 1-6As shown, a sampling device for automatic pretreatment of ammonia nitrogen in water, a mechanical arm 5 is installed in a slide 4, an X-axis position controller 2 and a Y-axis position controller 3 are used to move the mechanical arm 5 horizontally and vertically, a dosing metering pump 6 and a sampling metering pump 7 are installed on the mechanical arm 5, the dosing metering pump 6 is used to add a coagulant to a sample tube 11, and the sampling metering pump 7 is used to absorb a pretreated water sample, a cleaning tank 8 is filled with clean water, and it is convenient to clean the pipeline during the switching process of different reagents, an electromagnetic stirrer 9 is contained in the box body 1, and a plurality of sample trays 10 are provided on the upper side for placing sample tubes 11, and the sample tubes 1 1 contains the water sample to be treated, and a magnetic stirrer is added inside. After the coagulant is added, magnetic stirring can be performed to mix. 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, a 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 the detection is carried out. The precise metering pump 6 and the sampling metering pump 7 can be cleaned by the cleaning tank 8 when switching different reagents. The present invention adopts the X-axis position controller 2 and the Y-axis position controller 3 for precise positioning, and the coagulant is accurately added to the sample to be treated after being absorbed, and stirred for pretreatment. The present invention is equipped with 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 stirs and flocculates through stirring and oscillation, thereby 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 a 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.

[0023] 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, and stirring and flocculation precipitation are performed 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 11 is positioned through the X-axis position controller 2 and the Y-axis position controller 3, which is convenient for sampling the sampling system after flocculation precipitation, and can be used in conjunction with corresponding detection instruments, thereby fully realizing the automation of the ammonia nitrogen detection process; 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 strip 22 outward through the second limit block 23, so that the auxiliary positioning strip 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, the connecting handle 15 is moved to drive the block 16 to move. After the block 16 drives the reinforcement block 17 to move to the side of the electromagnetic stirrer 9, the block 16 will contact it and shrink into the inner cavity of the electromagnetic stirrer 9. At this time, the sample tray 10 can be removed.

[0024] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached 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); and 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 body (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), and a sample installation groove (21) is opened on the top of the sample tray (10), and auxiliary positioning strips (22) are symmetrically and movably connected around the inner cavity of the sample installation groove (21).

2. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 1, characterized in that: 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 mechanical arm (5) is movably connected in the inner cavity of the slide groove (4), the cleaning groove (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 plate (10) through the sample installation groove (21), and the auxiliary positioning strip (22) is attached to the outer wall of the sample tube (11).

3. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 1, characterized in that: A magnetic stirrer is provided at the bottom of the inner cavity of the sample tube (11), and there are two sample bottles (12), which are both installed on the top of the box (1).

4. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 1, characterized in that: The electromagnetic stirrer (9) is arranged on both sides of the sample plate (10), a through slot (13) is provided in the middle 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).

5. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 4, characterized in that: The other side of the connecting handle (15) is mounted on the outer wall of the clamping block (16); 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); 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); a first limiting block (18) is mounted on the other end of the second spring (20); the first limiting block (18) is mounted on one end of the reinforcing block (17); a 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).

6. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 1, characterized in that: Three second limit 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 limit 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).

7. A sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 6, 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).

8. The sampling device for automatic pretreatment of ammonia nitrogen in water according to claim 1, characterized in that: A torsion shaft (26) is rotatably connected in the inner cavity of the auxiliary positioning strip (22), auxiliary positioning blocks (27) are symmetrically installed on both sides of the torsion shaft (26), and a roller (28) is rotatably connected to the side of the auxiliary positioning block (27) away from the torsion shaft (26). 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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