Automatic sampling device for detecting chemical oxygen demand of water quality

Abstract

The invention relates to the technical field of water quality chemical oxygen demand detection, in particular to an automatic sampling device for water quality chemical oxygen demand detection, which comprises a workbench, a transmission mechanism, a pressing mechanism and a tray, the pressing mechanism is fixedly connected with symmetrically-arranged mounting rods, pressing wheels are rotationally connected to the bottom ends of the mounting rods, symmetrically-arranged supporting rods are fixedly connected to the middle position of the upper surface of the workbench, sliding grooves are formed in the opposite sides of the two supporting rods, and round rods are fixedly connected to the interiors of the sliding grooves; the test tube sample injection device has the beneficial effects that the test tube sample injection work can be conveniently carried out on a test tube through a mechanical linkage method, the working efficiency is improved, the working process is simplified, and the test tube sample injection device is convenient to operate and high in practicability. And the normal detection work of working personnel on the water quality is not influenced.

Description

Technical Field

[0001] This invention relates to the field of chemical oxygen demand (COD) detection technology in water quality, specifically to an automatic sample introduction device for detecting COD in water quality. Background Technology

[0002] With increasing public concern about environmental quality, water quality monitoring has received growing attention from environmental departments. Organic matter poses a significant threat to industrial water systems. Strictly speaking, chemical oxygen demand (COD) also includes inorganic reducing substances present in water. Since the amount of organic matter in wastewater is much greater than that of inorganic matter, COD is generally used to represent the total amount of organic matter in wastewater.

[0003] In current technology for testing chemical oxygen demand (COD) in water, sample addition generally requires manual labor. Due to the large number of test tubes, manual addition is inefficient and cumbersome.

[0004] To address the aforementioned problems, this invention proposes an automatic sampling device for detecting chemical oxygen demand (COD) in water. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides an automatic sampling device for detecting chemical oxygen demand (COD) in water.

[0006] The technical solution adopted by this invention to solve its technical problem is: an automatic sampling device for detecting chemical oxygen demand (COD) in water, comprising a worktable, a transmission mechanism, a pressing mechanism, and a tray. A support plate is fixedly connected to the upper surface of the worktable near the back. The pressing mechanism is fixedly connected to symmetrically arranged mounting rods, and each mounting rod has a pressing wheel rotatably connected to its bottom end. Symmetrically arranged support rods are fixedly connected to the middle of the upper surface of the worktable. Sliding grooves are formed on opposite sides of the two support rods. A round rod is fixedly connected inside each sliding groove. A lifting block is slidably connected inside each sliding groove. A first spring is fixedly connected to the bottom end of each lifting block corresponding to the position of the round rod. Each lifting block is provided with a fixing mechanism. Symmetrically arranged fixing grooves are formed on the tray. Several storage tubes are slidably connected to the middle of the tray. Symmetrically arranged pressure blocks are fixedly connected to the back of the tray.

[0007] Specifically, the transmission mechanism includes a mounting slot and a first motor. The mounting slot is rotatably connected to symmetrically arranged rotating rods. One of the rotating rods is fixedly connected to a first gear near its top, and the other rotating rod is fixedly connected to a second gear near its top.

[0008] Specifically, the mounting slot in the transmission mechanism is located near the top of the support plate. The first motor in the transmission mechanism is fixedly mounted at the top of the support plate. The output end of the first motor in the transmission mechanism is fixedly connected to one of the rotating rods. The first gear and the second gear in the transmission mechanism are meshed. Both the first gear and the second gear in the transmission mechanism are located inside the mounting slot.

[0009] Specifically, the pressing mechanism includes mounting plates, with through slots on opposite sides of the two mounting plates. T-shaped guide rods are fixedly connected to the inner walls of the two through slots, and driven racks are slidably connected to the two T-shaped guide rods. Symmetrically arranged upright plates are fixedly connected to the top of each mounting plate, and transmission rods are rotatably connected between the upright plates. A third gear is fixedly connected to one of the transmission rods, and a fourth gear is fixedly connected to the other transmission rod. A second motor is fixedly mounted on one of the upright plates.

[0010] Specifically, the two mounting plates in the pressing mechanism are fixedly connected to the middle positions of the two rotating rods in the transmission mechanism, the third gear in the pressing mechanism is meshed with one of the driven racks, the fourth gear in the pressing mechanism is meshed with the other driven rack, and the output end of the second motor in the pressing mechanism is fixedly connected to one of the transmission rods.

[0011] Specifically, the fixing mechanism includes a square groove, a guide groove, and baffles. A top rod is rotatably connected inside the square groove. The outer wall of the top rod is provided with symmetrically arranged top wheels. A symmetrically arranged sliding plate is slidably connected inside the square groove. Clamping rods are fixedly connected to the far surfaces of the two sliding plates. Extrusion plates are fixedly connected to the bottom ends of the two sliding plates at the positions corresponding to the guide grooves. Second springs are fixedly connected to the opposite surfaces of the two baffles.

[0012] Specifically, the square groove in the fixing mechanism is opened inside the lifting block, the guide groove in the fixing mechanism is opened at the bottom end of the lifting block, the baffles in the fixing mechanism are symmetrically fixedly connected to the bottom end of the lifting block, the square groove and the guide groove in the fixing mechanism are in a communication state, the two extrusion plates in the fixing mechanism are slidably connected to the guide groove, the two second springs in the fixing mechanism are respectively fixedly connected to the two extrusion plates, and the clamping rod in the fixing mechanism is slidably connected inside the fixing groove.

[0013] Specifically, the two mounting rods are fixedly connected to the bottom ends of the two mounting plates in the pressing mechanism, the two round rods are slidably connected to the two lifting blocks, the bottom ends of the two round rods are located at the hollow positions of the two first springs, and the bottom ends of the two first springs are fixedly connected to the bottom walls of the two sliding grooves.

[0014] The beneficial effects of this invention are:

[0015] (1) The present invention is provided with a first gear, a second gear, a third gear, a fourth gear, a driven rack, a rotating rod, etc. When the sample is injected, the two mounting plates can be driven to rotate to the top of the test tube by the cooperation of the first gear and the second gear. At this time, the mounting plate will drive the third gear and the fourth gear to mesh and connect. Then, the two driven racks can be driven to press the storage tube to dispense the sample through the linkage of the fourth gear and the third gear. After pressing, the mounting plate can be rotated back to its original position to prevent the mounting plate from affecting the normal work of the staff at the head position. The rotation of the mounting plate also facilitates the linkage of the third gear and the fourth gear, thereby facilitating the injection of the sample into the test tube.

[0016] (2) The present invention is provided with a tray, clamping rod, top wheel, top rod, first spring, sliding plate, fixing groove, etc. The tray carrying the storage tube can be fixed at the bottom of the mounting plate by the cooperation of the clamping rod and the fixing groove. When the two clamping plates rotate and clamp to the top of the tray, the mounting plate will also drive the pressing wheel to press the pressure block, thereby causing the pressure block to move the entire tray downward, so that the bottom outlet of the storage tube can be inserted into the interior of each test tube, making it easier to press the storage tube to discharge the sample inside the storage tube into the interior of the test tube. The cooperation of the clamping rod and the top wheel facilitates the installation and fixing of the tray. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a front view provided for the present invention;

[0019] Figure 2 The structural diagram of the fixing mechanism provided by the present invention;

[0020] Figure 3 This is a structural diagram of the top of the lifting block with the section cut off, provided by the present invention.

[0021] Figure 4 A detailed structural diagram of the support plate provided by the present invention;

[0022] Figure 5 A structural diagram showing the specific location of the T-shaped guide rod inside the through groove provided by this invention;

[0023] Figure 6 This is a structural diagram of the storage tube and tray provided by the present invention when they are separated.

[0024] In the diagram: 1. Workbench; 2. Transmission mechanism; 21. Mounting slot; 22. First motor; 23. Rotating rod; 24. First gear; 25. Second gear; 3. Pressing mechanism; 31. Mounting plate; 32. Through slot; 33. T-shaped guide rod; 34. Driven rack; 35. Vertical plate; 36. Transmission rod; 37. Third gear; 38. Fourth gear; 39. Second motor; 4. Tray; 5. Support plate; 6. Mounting rod; 7. Pressing wheel; 8. Support rod;

[0025] 9. Slide groove; 10. Round rod; 11. Lifting block; 12. First spring; 13. Fixing mechanism; 131. Square groove;

[0026] 132. Guide groove; 133. Baffle; 134. Top rod; 135. Top wheel; 136. Slide plate; 137. Clamping rod;

[0027] 138. Extrusion plate; 139. Second spring; 14. Fixing groove; 15. Storage tube; 16. Pressure block. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] like Figures 1-6 As shown, the automatic sampling device for detecting chemical oxygen demand (COD) in water quality according to the present invention includes a workbench 1, a transmission mechanism 2, a pressing mechanism 3, and a tray 4. A support plate 5 is fixedly connected to the upper surface of the workbench 1 near the back. The pressing mechanism 3 is fixedly connected to symmetrically arranged mounting rods 6. Each mounting rod 6 has a pressing wheel 7 rotatably connected to its bottom end. Symmetrically arranged support rods 8 are fixedly connected to the middle position of the upper surface of the workbench 1. Sliding grooves 9 are opened on opposite sides of the two support rods 8. Round rods 10 are fixedly connected inside each sliding groove 9. Lifting blocks 11 are slidably connected inside each sliding groove 9. A first spring 12 is fixedly connected to the bottom end of each lifting block 11 corresponding to the position of the round rod 10. Each lifting block 11 is provided with a fixing mechanism 13. Symmetrically arranged fixing grooves 14 are opened on the tray 4. Several storage tubes 15 are slidably connected to the middle position of the tray 4. Symmetrically arranged pressure blocks 16 are fixedly connected to the back of the tray 4.

[0030] Specifically, the transmission mechanism 2 includes a mounting groove 21 and a first motor 22. The mounting groove 21 is rotatably connected to symmetrically arranged rotating rods 23. One of the rotating rods 23 is fixedly connected to a first gear 24 near its top position, and the other rotating rod 23 is fixedly connected to a second gear 25 near its top position.

[0031] Specifically, the mounting groove 21 in the transmission mechanism 2 is opened on the support plate 5 near the top. The first motor 22 in the transmission mechanism 2 is fixedly installed at the top of the support plate 5. The output end of the first motor 22 in the transmission mechanism 2 is fixedly connected to one of the rotating rods 23. The first gear 24 and the second gear 25 in the transmission mechanism 2 are meshed. Both the first gear 24 and the second gear 25 in the transmission mechanism 2 are located inside the mounting groove 21. The first motor 22 can easily drive one of the rotating rods 23 to rotate, and the first gear 24 can easily drive the second gear 25 to rotate.

[0032] Specifically, the pressing mechanism 3 includes mounting plates 31. Each of the two mounting plates 31 has a through groove 32 on its opposite sides. A T-shaped guide rod 33 is fixedly connected to the inner wall of each of the two through grooves 32. A driven rack 34 is slidably connected to each of the two T-shaped guide rods 33. Symmetrically arranged upright plates 35 are fixedly connected to the top of each mounting plate 31. A transmission rod 36 is rotatably connected between each of the upright plates 35. A third gear 37 is fixedly connected to one of the transmission rods 36, and a fourth gear 38 is fixedly connected to the other transmission rod 36. A second motor 39 is fixedly mounted on one of the upright plates 35.

[0033] Specifically, the two mounting plates 31 in the pressing mechanism 3 are respectively fixedly connected to the middle positions of the two rotating rods 23 in the transmission mechanism 2. The third gear 37 in the pressing mechanism 3 is meshed with one of the driven racks 34, and the fourth gear 38 in the pressing mechanism 3 is meshed with the other driven rack 34. The output end of the second motor 39 in the pressing mechanism 3 is fixedly connected to one of the transmission rods 36. The second motor 39 can easily drive one of the transmission rods 36 to rotate, and the third gear 37 and the fourth gear 38 can easily drive the two driven racks 34 to move up or down.

[0034] Specifically, the fixing mechanism 13 includes a square groove 131, a guide groove 132, and a baffle 133. A top rod 134 is rotatably connected inside the square groove 131. The outer wall of the top rod 134 is provided with symmetrically arranged top wheels 135. A symmetrically arranged sliding plate 136 is slidably connected inside the square groove 131. A clamping rod 137 is fixedly connected to the far side of the two sliding plates 136. A pressing plate 138 is fixedly connected to the bottom end of the two sliding plates 136 at the position corresponding to the guide groove 132. A second spring 139 is fixedly connected to the opposite side of the two baffles 133.

[0035] Specifically, the square groove 131 in the fixing mechanism 13 is opened inside the lifting block 11, the guide groove 132 in the fixing mechanism 13 is opened at the bottom end of the lifting block 11, the baffle 133 in the fixing mechanism 13 is symmetrically fixedly connected to the bottom end of the lifting block 11, the square groove 131 and the guide groove 132 in the fixing mechanism 13 are in a communicating state, the two extrusion plates 138 in the fixing mechanism 13 are slidably connected to the guide groove 132, the two second springs 139 in the fixing mechanism 13 are respectively fixedly connected to the two extrusion plates 138, and the clamping rod 137 in the fixing mechanism 13 is slidably connected inside the fixing groove 14. The clamping rod 137 can fix the position of the tray 4 by connecting with the fixing groove 14, and the extrusion plates 138 can cooperate with the baffle 133 to squeeze and retract the second springs 139.

[0036] Specifically, the two mounting rods 6 are fixedly connected to the bottom ends of the two mounting plates 31 in the pressing mechanism 3, the two round rods 10 are slidably connected to the two lifting blocks 11, the bottom ends of the two round rods 10 are respectively located at the hollow positions of the two first springs 12, and the bottom ends of the two first springs 12 are fixedly connected to the bottom walls of the two sliding grooves 9. The round rods 10 facilitate the movement of the lifting blocks 11.

[0037] In use, the first motor 22 first drives one of the rotating rods 23 to rotate, at which point the first gear 24 rotates accordingly. The first gear 24 then drives the second gear 25 to rotate, which in turn drives the other rotating rod 23 to rotate. The simultaneous rotation of both rotating rods 23 causes the mounting plate 31 to rotate, resulting in a scissor-like rotation. As the mounting plate 31 rotates, it also drives the mounting rod 6 to rotate. The mounting rod 6 then drives the pressing wheel 7 to contact the sloped portion of the pressure block 16 during rotation, thus allowing the continuously rotating pressing wheel 7 to exert pressure on the pressure block 16. When block 16 is rotated and pressed, the pressure block 16 will drive the tray 4 to move downwards. The lifting block 11 of the tray 4 will also move downwards in the slide 9. At the same time, the lifting block 11 will squeeze and retract the first spring 12. Then, the tray 4 will drive each storage tube 15 to move downwards, and the discharge port at the bottom of the storage tube 15 will be inserted into the top of the test tube. At this time, the two mounting plates 31 have also completed their rotation, and the third gear 37 and the fourth gear 38 have also meshed together. Then, the second motor 39 drives one of the transmission rods 36 to rotate, and the third gear 37 will follow suit and rotate. Rotating wheel 37 drives the fourth gear 38 to rotate. At this time, both the third gear 37 and the fourth gear 38 drive the driven rack 34 to move downwards. The bottom of the driven rack 34 presses against the top of the storage tube 15, squeezing the sample from inside the storage tube 15 into the test tube. After adding the sample, the mechanisms can be reset. The two driven racks 34 are tightly connected to the T-shaped guide rod 33. The driven racks 34 will not move downwards due to their own weight unless dragged by an external force. The movement of the driven racks 34 requires the driving force of the third gear 37 and the fourth gear 38. Normal movement is possible only when the tray 4 needs to be removed. The top rod 134 can be rotated, which will drive the top wheel 135 to rotate. The two top wheels 135 will push against the slide plate 136 respectively. At this time, the two slide plates 136 will move in opposite directions. The movement of the slide plates 136 will drive the extrusion plate 138 to move. The movement of the extrusion plate 138 will compress and shrink the second spring 139. At the same time, the movement of the slide plates 136 will also drive the clamping rod 137 to move out of the fixing groove 14 on the tray 4. At this time, the tray 4 can be removed. Then, the top rod 134 can be released, and the second spring 139 will drive the various mechanisms to reset.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic sampling device for detecting chemical oxygen demand (COD) in water, characterized in that, The system includes a workbench (1), a transmission mechanism (2), a pressing mechanism (3), and a tray (4). A support plate (5) is fixedly connected to the upper surface of the workbench (1) near the back. The pressing mechanism (3) is fixedly connected to symmetrically arranged mounting rods (6). Each mounting rod (6) has a pressing wheel (7) rotatably connected to its bottom end. Symmetrically arranged support rods (8) are fixedly connected to the middle of the upper surface of the workbench (1). Slide grooves (9) are provided on opposite sides of the two support rods (8). The interior of the slide grooves (9) All are fixedly connected with round rods (10), and all are slidably connected with lifting blocks (11) inside the sliding grooves (9). The bottom of each lifting block (11) is fixedly connected with a first spring (12) at the position corresponding to the round rod (10). Each lifting block (11) is provided with a fixing mechanism (13). The tray (4) is provided with symmetrically arranged fixing grooves (14). Several storage tubes (15) are slidably connected at the middle position of the tray (4). The back of the tray (4) is fixedly connected with symmetrically arranged pressure blocks (16).

2. The automatic sampling device for detecting chemical oxygen demand in water according to claim 1, characterized in that: The transmission mechanism (2) includes a mounting groove (21) and a first motor (22). The mounting groove (21) is rotatably connected to symmetrically arranged rotating rods (23). One of the rotating rods (23) is fixedly connected to a first gear (24) near the top, and the other rotating rod (23) is fixedly connected to a second gear (25) near the top.

3. An automatic sampling device for detecting chemical oxygen demand in water according to claim 2, characterized in that: The mounting groove (21) in the transmission mechanism (2) is opened on the support plate (5) near the top. The first motor (22) in the transmission mechanism (2) is fixedly installed at the top of the support plate (5). The output end of the first motor (22) in the transmission mechanism (2) is fixedly connected to one of the rotating rods (23). The first gear (24) and the second gear (25) in the transmission mechanism (2) are meshed. Both the first gear (24) and the second gear (25) in the transmission mechanism (2) are located inside the mounting groove (21).

4. An automatic sampler for detecting chemical oxygen demand (COD) in water according to claim 1, characterized in that: The pressing mechanism (3) includes a mounting plate (31). Each of the two mounting plates (31) has a through groove (32) on its opposite side. Each of the two through grooves (32) has a T-shaped guide rod (33) fixedly connected to its inner wall. Each of the two T-shaped guide rods (33) has a driven rack (34) slidably connected to its ...

5. An automatic sampling device for detecting chemical oxygen demand in water according to claim 4, characterized in that: The two mounting plates (31) in the pressing mechanism (3) are fixedly connected to the middle positions of the two rotating rods (23) in the transmission mechanism (2). The third gear (37) in the pressing mechanism (3) is meshed with one of the driven racks (34). The fourth gear (38) in the pressing mechanism (3) is meshed with the other driven rack (34). The output end of the second motor (39) in the pressing mechanism (3) is fixedly connected to one of the transmission rods (36).

6. An automatic sampler for detecting chemical oxygen demand (COD) in water according to claim 1, characterized in that: The fixing mechanism (13) includes a square groove (131), a guide groove (132), and a baffle (133). A top rod (134) is rotatably connected inside the square groove (131). The outer wall of the top rod (134) is provided with symmetrically arranged top wheels (135). A symmetrically arranged sliding plate (136) is slidably connected inside the square groove (131). A clamping rod (137) is fixedly connected to the far side of the two sliding plates (136). A pressing plate (138) is fixedly connected to the bottom end of the two sliding plates (136) at the position corresponding to the guide groove (132). A second spring (139) is fixedly connected to the opposite side of the two baffles (133).

7. An automatic sampler for detecting chemical oxygen demand (COD) in water according to claim 6, characterized in that: The square groove (131) in the fixing mechanism (13) is opened inside the lifting block (11). The guide groove (132) in the fixing mechanism (13) is opened at the bottom end of the lifting block (11). The baffle (133) in the fixing mechanism (13) is symmetrically fixedly connected to the bottom end of the lifting block (11). The square groove (131) and the guide groove (132) in the fixing mechanism (13) are in a communication state. The two extrusion plates (138) in the fixing mechanism (13) are slidably connected to the guide groove (132). The two second springs (139) in the fixing mechanism (13) are fixedly connected to the two extrusion plates (138) respectively. The clamping rod (137) in the fixing mechanism (13) is slidably connected inside the fixing groove (14).

8. An automatic sampling device for detecting chemical oxygen demand in water according to claim 1, characterized in that: The two mounting rods (6) are fixedly connected to the bottom ends of the two mounting plates (31) in the pressing mechanism (3), the two round rods (10) are slidably connected to the two lifting blocks (11), the bottom ends of the two round rods (10) are located in the hollow positions of the two first springs (12), and the bottom ends of the two first springs (12) are fixedly connected to the bottom walls of the two sliding grooves (9).

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