Portable COD (Chemical Oxygen Demand) monitor group

Abstract

The utility model relates to the technical field of organic waste gas treatment, and particularly discloses a portable COD (Chemical Oxygen Demand) monitoring unit which comprises a portable mechanism, a monitoring component is arranged in the portable mechanism, and an oscillating mechanism is arranged at the bottom end in the portable mechanism and is positioned below the monitoring component. When sample waste liquid needs to be detected, the whole structure can be carried through a handle of the box cover, when the whole structure is moved to a designated position, the storage box is placed on a plane, buffering protection of objects in the storage box can be achieved through sliding of the buffering columns in the buffering bases and cooperation of the reset effect of the first springs, and when the box cover needs to be opened, a lock pin is pulled, so that the storage box can be opened. Through the stretching effect of a second spring, a lock pin is separated from a lock hole, a lock head can move out of a lower lock seat, relative opening of a box cover and a storage box is achieved, and waste liquid can be detected through a COD monitor arranged on a storage plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to organic waste gas treatment technical field, specifically disclose a COD monitor set convenient to carry. BACKGROUND

[0002] COD monitor is a kind of instrument for measuring the chemical oxygen demand in water.COD is an important index to measure the content of organic pollutants in water, reflects the total amount of oxidizable substances (mainly organic matter) in water.

[0003] As the utility model discloses a kind of cod water quality on-line monitor, including water quality on-line monitor body, the front side of the water quality on-line monitor body is provided with display, the front side of the water quality on-line monitor body is provided with control switch, the right side of the water quality on-line monitor body is fixedly installed with connection interface, the outside of the connection interface is fixedly installed with signal connection mechanism, the top of the water quality on-line monitor body is fixedly installed with handle.The cod water quality on-line monitor, lower interface and monitoring probe can be quickly disassembled, it is convenient to replace different monitoring probe, tighten locking bolt, until locking bolt and positioning mounting hole completely separate, pull out the connecting seat outward, the quick disassembly of connecting line and upper interface and lower interface can be realized, connecting line can be replaced according to actual situation, the connecting line of double-layer wrapping design can improve the wear resistance of connecting line, and the service life of connecting line can be improved.Currently, organic waste gas is generally operated through spray tower when being treated, atomized liquid is sprayed out through spray tower to contact with organic waste gas molecules, harmful substances in waste gas are reacted and treated, finally form liquid waste, and then the waste liquid is treated to realize complete purification of organic waste gas, and before detection, the pollutants in the liquid of waste liquid need to be measured, and the conventional monitor structure is relatively large in size, inconvenient to transfer in the factory area with large production area, so as to bring difficulty in transfer to workers during monitoring and detection. UTILITARIAN CONTENT

[0004] Therefore, the utility model aims at providing a kind of COD monitor set convenient to carry to solve the problem that traditional bulky monitor is not suitable for large-scale monitoring and detection in the case of organic waste gas treatment factory area is larger.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of COD monitor set convenient to carry, including portable mechanism, the inside of portable mechanism is provided with monitoring component, the inside bottom end of portable mechanism is provided with oscillation mechanism, and oscillation mechanism is below monitoring component.

[0006] Further, the portable mechanism comprises a storage box, the bottom of the storage box is provided with a plurality of buffer columns, the surface of the buffer column is slidably sleeved with a buffer seat, the surface of the buffer column is wound with a spring one, and the lower end of the buffer seat is provided with a buffer pad.

[0007] The upper end of the storage box is provided with a box cover on one side, and the outward side of the box cover is provided with a handle.

[0008] Further, the storage box is provided with a lower lock seat on the side away from the box cover, the lower lock seat is provided with a lock sleeve penetrating through the side away from the storage box, the lock sleeve is provided with a lock pin penetrating through the inside, the surface of the lock pin is wound with a spring two, and the two ends of the spring two are respectively fixedly assembled with the end face of the lock sleeve and the end head position of the lock pin.

[0009] The end of the box cover is provided with an upper lock seat, the side close to the lower lock seat of the upper lock seat is fixedly provided with a lock head, the surface of the lock head is provided with a lock hole penetrating through the inside, and the lock pin is slidably penetratingly arranged in the lock hole.

[0010] Further, the monitoring assembly comprises a storage plate, the storage plate is slidably sleeved with the inside of the storage box, the inside walls of the storage box are provided with support strips on both sides, the lower end face of the storage plate is erected on the upper end of the support strip, the upper end of the storage plate is provided with a machine seat, the inside of the machine seat is fixedly provided with a COD monitor, and the upper end of the storage plate is fixedly provided with a pull head.

[0011] Further, the upper end of the storage plate is also fixedly provided with a storage battery, and the storage battery is respectively provided with a terminal post, a socket, a USB interface and a power switch, the terminal post of the storage battery is electrically connected with the terminal post of the COD monitor through a wire.

[0012] Further, the upper end of the storage plate is also fixedly provided with a test tube seat, the inside of the test tube seat is provided with a plurality of test tube grooves, and the inside of the test tube groove is inserted with a test tube one.

[0013] Further, the lower end of the machine seat is fixedly provided with at least two alignment blocks, the surface of the storage plate is provided with an alignment groove corresponding to the position of the alignment block, and the alignment block and the alignment groove are slidably inserted and connected.

[0014] The inside of the alignment block is provided with a groove, the inside of the groove is slidably sleeved with a spring three, the inside of the groove is provided with a spring three, and the two ends of the spring three are respectively fixedly connected with the surface of the spring and the inside of the groove. The inner wall of the alignment groove is provided with an arc-shaped groove, and the end arc surface of the spring is slidably and extrusively arranged with the inner wall of the arc-shaped groove.

[0015] Further, the oscillation mechanism comprises a sleeve, the inside of the sleeve is slidably sleeved with a square rod, the other end of the square rod is fixedly provided with a connecting block, the surface of the square rod is wound with a spring four, and the two ends of the spring four are respectively fixedly assembled with the end face of the sleeve and the surface of the connecting block.

[0016] Further, the upper end of the two adapter blocks is fixed with an oscillation seat, the inside of the oscillation seat is embedded with a silica gel seat, the upper end of the oscillation seat is fixed with a positioning plate through a support, the inside of the positioning plate is provided with a silica gel sleeve, the inside of the silica gel seat is inserted with a test tube two, the test tube two is slidingly sleeved with the silica gel sleeve and is provided through;

[0017] Further, one side of the oscillation seat is fixed with an extrusion plate, the inside bottom end of the storage box is fixed with a motor through a support, the inside of the motor is provided with a rotating shaft for driving, the end of the rotating shaft is fixed with an eccentric wheel, the far and near ends of the eccentric wheel end in abutting contact with the extrusion plate.

[0018] The working principle and beneficial effects of the scheme are that: 1. When the sample waste liquid needs to be detected, the overall structure can be carried through the handle of the box cover, and when it is moved to the specified position, the storage box is placed on the plane, and the buffer column is slidingly arranged in the buffer seat, and the reset effect of the spring one is matched, so that the buffer protection of the objects in the storage box can be realized. When the box cover needs to be opened, the lock pin is pulled, the lock pin is separated from the lock hole through the stretching effect of the spring two, so that the lock head can be moved out of the lower lock seat, realizing the relative opening of the box cover and the storage box. The COD monitor arranged on the storage plate can detect the waste liquid, and the test tube one arranged on the storage plate and placed in the test tube seat can sample and store the waste liquid. When the COD monitor needs to be removed, the spring pin is subjected to the hard pulling force, the end arc surface of the spring pin is hard pressed with the inner arc surface of the arc groove, so that the spring pin can compress the spring three into the groove, so that the separation of the positioning block and the positioning groove can be realized, and then the disconnection operation of the machine seat and the storage plate can be realized.

[0019] 2. As described in 1, when the sample detection needs to add reagent and oscillate, the storage plate can be pulled by the puller to slide and separate from the storage box. The storage plate can be stably erected in the storage box through the support strip. When the storage plate and the storage box are separated, the oscillation mechanism is exposed, the test tube two for mixing reagent and sample is arranged through the silica gel sleeve on the positioning plate, and the bottom end of the test tube two is inserted into the silica gel seat on the oscillation seat, so that the test tube two can be stably placed. The power cord of the motor is plugged with the socket of the storage battery to realize power connection, so that the motor can be driven, and the rotating shaft drives the eccentric wheel to rotate. The far and near ends of the eccentric wheel continuously contact the extrusion plate, so that the pushing or releasing effect can be realized. The square rod is slidingly arranged in the sleeve, and the reset effect of the spring four makes the oscillation seat realize reciprocating movement, forming the oscillation effect, so that the mixed liquid in the test tube two can be continuously oscillated and mixed.

[0020] The other advantages, objects, and features of the present application will be apparent to those skilled in the art in view of the following detailed description of the application, and will be apparent from the practice of the application, which will be taught in the following description. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 Schematic diagram of each mechanism of the embodiment;

[0022] Figure 2 Schematic diagram of the overall structure of the embodiment;

[0023] Figure 3 Schematic diagram of the position of the box cover and handle of the embodiment;

[0024] Figure 4 Schematic diagram of the distribution of the lower lock seat and the upper lock seat of the embodiment;

[0025] Figure 5 Schematic diagram of the structure of the lower lock seat of the embodiment;

[0026] Figure 6 Schematic diagram of the connection of the machine base and the storage plate of the embodiment;

[0027] Figure 7 Schematic diagram of the amplification at A of the embodiment;

[0028] Figure 8 Schematic diagram of the position and structure of the oscillation mechanism of the embodiment.

[0029] In the drawings, the following signs are marked: 1, portable mechanism; 2, monitoring assembly; 3, oscillation mechanism; 10, storage box; 11, buffer column; 12, buffer seat; 13, spring one; 14, buffer pad; 15, box cover; 16, handle; 1001, lower lock seat; 1002, lock sleeve; 1003, lock pin; 1004, upper lock seat; 1005, lock hole; 1006, lock head; 1007, spring two; 20, storage plate; 21, machine base; 22, COD monitor; 23, storage battery; 24, test tube seat; 25, test tube one; 26, support strip; 27, pull head; 2001, alignment groove; 2002, alignment block; 2003, recess; 2004, spring three; 2005, elastic pin; 2006, arc-shaped groove; 30, sleeve; 31, square rod; 32, spring four; 33, link block; 34, oscillation seat; 35, silica gel seat; 36, positioning plate; 37, silica gel sleeve; 38, test tube two; 39, extrusion plate; 310, motor; 311, eccentric wheel. DETAILED DESCRIPTION

[0030] The following will be further described in detail through specific embodiments:

[0031] Embodiment

[0032] As Figures 1 to 8 shown, a portable COD monitor set is disclosed, comprising a portable mechanism 1, the inside of the portable mechanism 1 is provided with a monitoring assembly 2, the inside bottom end of the portable mechanism 1 is provided with an oscillation mechanism 3, the oscillation mechanism 3 is located below the monitoring assembly 2.

[0033] The portable mechanism 1 comprises a storage box 10, a plurality of buffer columns 11 are distributed on the bottom of the storage box 10, the plurality of buffer columns 11 are symmetrically distributed and arranged along the two ends of the bottom of the storage box 10, the upper end of the buffer column 11 is fixed with the bottom of the storage box 10 through a screw, the surface of the buffer column 11 is slidably sleeved with a buffer seat 12, the surface of the buffer column 11 is wound with a spring I 13, the spring I 13 mainly plays a buffering protection effect on the objects inside the storage box 10 when the storage box 10 is placed, the two ends of the spring I 13 are fixedly assembled with the end face of the buffer seat 12 and the bottom face of the storage box 10 respectively, the lower end of the buffer seat 12 is provided with a buffer pad 14, the buffer pad 14 is fixedly bonded with the buffer seat 12 at the joint position through resin glue, the buffer pad 14 is made of rubber material, one side of the upper end of the storage box 10 is provided with a box cover 15, the joint position of the box cover 15 and the storage box 10 is hingedly arranged through a door hinge, the box cover 15 can be matched with the storage box 10, which is convenient for surrounding protection of the objects inside when carrying the monitor set, the outward side of the box cover 15 is provided with a handle 16, the handle 16 is convenient for lifting the whole structure when carrying, the end of the handle 16 is fixedly assembled with the surface of the box cover 15 through a screw;

[0034] The side of the storage box 10 away from the box cover 15 is provided with a lower lock seat 1001, one end of the lower lock seat 1001 is fixedly assembled with the end face of the storage box 10 through a screw, the side of the lower lock seat 1001 away from the storage box 10 is provided with a lock sleeve 1002, the joint position of the lock sleeve 1002 and the lower lock seat 1001 is fixedly welded, the inside of the lock sleeve 1002 is provided with a lock pin 1003, the surface of the lock pin 1003 is wound with a spring II 1007, the two ends of the spring II 1007 are fixedly assembled with the end face of the lock sleeve 1002 and the end position of the lock pin 1003 respectively, through the extension and repositioning of the spring II 1007, it can be ensured that the lock pin 1003 can be repositioned after being pulled, the end of the box cover 15 is provided with an upper lock seat 1004, the side of the upper lock seat 1004 close to the lower lock seat 1001 is fixedly provided with a lock head 1006, the surface of the lock head 1006 is provided with a lock hole 1005 penetrating the inside thereof, the lock head 1006 can be placed in the inside of the lower lock seat 1001, the lock pin 1003 and the lock hole 1005 are slidably penetrated, through the cooperation of the lower lock seat 1001 and the upper lock seat 1004, the stable locking effect can be realized after the storage box 10 and the box cover 15 are closed.

[0035] The monitoring assembly 2 comprises a storage plate 20 which is slidably connected with the inside of the storage box 10. The inside walls of the storage box 10 are provided with support strips 26 which are fixed to the inside walls of the storage box 10 by screws. The lower end surface of the storage plate 20 is erected on the upper end of the support strips 26, so as to ensure the stable placement of the storage plate 20 in the storage box 10. The upper end of the storage plate 20 is provided with a machine base 21. The inside of the machine base 21 is inserted and fixed with a COD monitor 22. The COD monitor 22 usually adopts the chemical oxidation method to measure the COD value in the water sample. Potassium dichromate is used as an oxidizing agent to oxidize organic matter in the water sample under strong acid conditions. Then the remaining oxidizing agent is measured by colorimetric method or titration method to calculate the COD value. The upper end of the storage plate 20 is also fixed with a storage battery 23. The storage battery 23 is a lithium battery which is charged. The storage battery 23 is respectively provided with a terminal post, a socket, a USB interface and a power switch. The terminal post of the storage battery 23 is electrically connected with the terminal post of the COD monitor 22 through a wire. The socket can be used for the power supply requirement of the motor 310. The USB interface can be used for charging the storage battery 23 itself. The power switch can control the opening and closing of the discharge of the storage battery 23. The upper end of the storage plate 20 is also fixed with a test tube holder 24. The inside of the test tube holder 24 is provided with a plurality of test tube grooves. The inside of the test tube groove is inserted with a test tube 25. The test tube 25 can be used for sampling the water sample and storing the mixed container of the reagent. The sampling sample amount and the total amount mixed with the reagent should not exceed two-thirds of the liquid level of the test tube 25 to avoid spilling. The upper end of the storage plate 20 is fixed with a pull head 27. The storage plate 20 can be taken out from the storage box 10 by holding the pull head 27.

[0036] The lower end of the machine base 21 is fixed with at least two alignment blocks 2002. The surface of the storage plate 20 is provided with alignment grooves 2001 corresponding to the positions of the alignment blocks 2002. The alignment blocks 2002 and the alignment grooves 2001 are slidably inserted and connected. The machine base 21 and the storage plate 20 can be quickly positioned and located when placed. The inside of the alignment block 2002 is provided with a groove 2003. The inside of the groove 2003 is slidably connected with a spring pin 2005. The end surface of the spring pin 2005 is arc-shaped. The inside of the groove 2003 is provided with a spring 2004. The two ends of the spring 2004 are fixedly connected with the surface of the spring pin 2005 and the inside of the groove 2003. An arc-shaped groove 2006 is formed in the inner wall of the alignment groove 2001. The end arc surface of the spring pin 2005 is slidably and extrusively arranged with the inner wall of the arc-shaped groove 2006. The machine base 21 and the storage plate 20 can be clamped and fixed. The placement is stable and the disassembly and separation are also convenient. The end arc surface of the spring pin 2005 is arranged. The inner arc surface structure of the arc-shaped groove 2006 can realize the clamping and separation of the two through the effects of hard extrusion and dragging.

[0037] The oscillation mechanism 3 comprises sleeves 30, which are provided with two and symmetrically arranged along the bottom of the storage box 10, the inside of the sleeve 30 is slidingly sleeved with a square rod 31, the other end of the square rod 31 is fixedly provided with an adapter block 33, the surface of the square rod 31 is wound with a spring four 32, the two ends of the spring four 32 are fixedly assembled with the end face of the sleeve 30 and the surface of the adapter block 33, and the square rod 31 is limited in position in a rectangular structure, so that the adapter block 33 can move horizontally in extension and contraction under the compression of the spring four 32 to reset, the upper end of the two adapter blocks 33 is fixedly provided with an oscillation seat 34, the inside of the oscillation seat 34 is embedded with a silica gel seat 35, the upper end of the oscillation seat 34 is fixedly provided with a positioning plate 36 through a support, the inside of the positioning plate 36 is penetratingly provided with a silica gel sleeve 37, the adapter position of the silica gel sleeve 37 and the positioning plate 36 is fixedly bonded by resin glue, the inside of the silica gel seat 35 is inserted with a test tube two 38, the specification of the test tube two 38 is the same as that of the test tube one 25, the test tube two 38 is slidingly sleeved with the silica gel sleeve 37 and is penetratingly provided, when the test tube two 38 mixes and oscillates the sample and the reagent, the silica gel sleeve 37 and the silica gel seat 35 can play a buffering protection effect, one side of the oscillation seat 34 is fixedly provided with a pressing plate 39, the inside bottom end of the storage box 10 is fixedly provided with a motor 310 through a support, the inside of the motor 310 is provided with a driving shaft, the end of the driving shaft is fixedly provided with an eccentric wheel 311, the distal end of the eccentric wheel 311 starts and ends with the pressing plate 39 to fit and contact, when oscillating, the storage plate 20 is taken out in advance, then the wire plug of the motor 310 is plugged and connected with the socket of the storage battery 23 to be electrified, the driving of the motor 310 makes the driving shaft rotate, the linkage of the eccentric wheel 311 can be realized, the distal end continuously contacts with the pressing plate 39, and the reset effect of the spring four 32 is matched, so that the oscillation of the mixed liquid in the test tube two 38 can be realized, and the continuous mixing of the reagent and the sample can be improved.

[0038] In specific implementation

[0039] When the sample waste liquid needs to be detected, the whole structure can be carried through the handle 16 of the box cover 15, when moving to the specified position, the storage box 10 is placed on the plane, the buffer column 11 is slidingly arranged in the buffer seat 12, and the reset effect of the spring one 13 is matched, so that the buffer protection of the objects in the storage box 10 can be realized, when the box cover 15 needs to be opened, the locking pin 1003 is pulled, the stretching effect of the spring two 1007 makes the locking pin 1003 separate from the lock hole 1005, so that the lock head 1006 can be moved out of the lower lock seat 1001, and the relative opening of the box cover 15 and the storage box 10 is realized.

[0040] During the detection, the waste liquid can be detected by the COD monitor 22 arranged on the placing plate 20, the test tube 25 arranged on the placing plate 20 and placed in the test tube seat 24 can sample and store the waste liquid, when the COD monitor 22 needs to be taken off, the end arc surface of the elastic pin 2005 is hard pressed with the inner arc surface of the arc-shaped groove 2006 by pulling the base 21, the elastic pin 2005 can compress the spring three 2004 into the groove 2003, so that the separation of the locating block 2002 and the locating groove 2001 can be realized, and then the disengagement operation of the base 21 and the placing plate 20 can be realized;

[0041] When the reagent needs to be added and oscillated during the sample detection, the placing plate 20 can be pulled by the pull head 27 to slide and disengage with the storage box 10, the placing plate 20 can be stably erected in the storage box 10 through the supporting strip 26, when the placing plate 20 is separated from the storage box 10, the oscillation mechanism 3 is exposed, the test tube two 38 for mixing the reagent and the sample is arranged through the silica gel sleeve 37 on the positioning plate 36, and the bottom end of the test tube two 38 is inserted into the silica gel seat 35 on the oscillation seat 34, so that the test tube two 38 can be stably placed, the motor 310 can be driven by plugging the wire plug of the motor 310 with the socket of the storage battery 23, and the eccentric wheel 311 is driven to rotate by the rotating shaft, the pushing or releasing effect can be realized by the continuous contact of the eccentric wheel 311 with the pressing plate 39, the oscillation seat 34 can realize reciprocating movement by the sliding of the square rod 31 in the sleeve 30 and the reset effect of the spring four 32, the oscillation effect is formed, and the mixed liquid in the test tube two 38 can be continuously oscillated and mixed.

[0042] The above is only the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be regarded as the protection range of the present application, and these will not affect the effect and practicability of the present application.

Claims

1. A portable COD monitoring device set, characterized in that: It includes a portable mechanism, inside which a monitoring component is provided, and at the bottom of the portable mechanism is an oscillation mechanism located below the monitoring component.

2. The portable COD monitoring device set according to claim 1, characterized in that: The portable mechanism includes a storage box, with several buffer pillars distributed at the bottom of the storage box. Buffer seats are slidably fitted onto the surface of each buffer pillar, and springs are wound around the surface of each buffer pillar. A buffer pad is provided at the lower end of the buffer seat. The storage box has a lid on one side of its upper end, and a handle on the outward-facing side of the lid.

3. The portable COD monitoring device set according to claim 2, characterized in that: The storage box is provided with a lower lock seat on the side away from the box lid, and a lock sleeve is provided through the side of the lower lock seat away from the storage box. A lock pin is provided through the inside of the lock sleeve, and a second spring is wound around the surface of the lock pin. The two ends of the second spring are fixedly assembled to the end face of the lock sleeve and the end position of the lock pin, respectively. The end of the lid is provided with an upper locking seat. A lock head is fixed on the side of the upper locking seat near the lower locking seat. A lock hole is opened on the surface of the lock head, which is connected to the lock hole. The lock pin slides through the lock hole and is engaged with the lower locking seat.

4. A portable COD monitoring device set according to claim 3, characterized in that: The monitoring component includes a shelf, which is slidably fitted inside the storage box. Support bars are provided on both sides of the inner wall of the storage box. The lower end of the shelf is supported on the upper end of the support bars. A base is provided on the upper end of the shelf, and a COD monitor is inserted and fixed inside the base. A pull head is fixed on the upper end of the shelf.

5. A portable COD monitoring device set according to claim 4, characterized in that: A battery is fixed at the top of the shelf, with terminals, a socket, a USB port and a power switch on it. The battery terminals are connected to the terminals of the COD monitor via wires.

6. A portable COD monitoring device set according to claim 5, characterized in that: The upper end of the shelf is also fixed with a test tube holder, which has several test tube slots inside, and test tubes are inserted into the test tube slots.

7. A portable COD monitoring device set according to claim 6, characterized in that: At least two alignment blocks are fixed at the lower end of the base, and alignment slots corresponding to the positions of the alignment blocks are opened on the surface of the placement plate. The alignment blocks slide into and dock with the alignment slots. The alignment block has a groove inside, and a spring pin is slidably sleeved inside the groove. A spring three is installed inside the groove, and the two ends of the spring three are fixedly connected to the surface of the spring pin and the inside of the groove, respectively. An arc-shaped groove is opened on the inner wall of the alignment groove, and the arc surface of the end of the spring pin slides and presses against the inner wall of the arc-shaped groove.

8. A portable COD monitoring device set according to claim 7, characterized in that: The oscillation mechanism includes a sleeve, inside which a square rod is slidably fitted. A connecting block is fixed to the other end of the square rod. A spring is wound around the surface of the square rod, and the two ends of the spring are fixedly assembled to the end face of the sleeve and the surface of the connecting block, respectively.

9. A portable COD monitoring device set according to claim 8, characterized in that: Both connecting blocks have an oscillating seat fixed to their upper ends. The oscillating seat has a silicone seat embedded inside. The upper end of the oscillating seat is fixed with a positioning plate by a bracket. A silicone sleeve is installed through the inside of the positioning plate. A second test tube is inserted into the inside of the silicone seat. The second test tube is slidably connected to the silicone sleeve and is installed through it.

10. A portable COD monitoring device set according to claim 9, characterized in that: An extrusion plate is fixed to one side of the oscillating seat. A motor is fixed to the bottom of the storage box via a bracket. The motor has a drive shaft inside. An eccentric wheel is fixed to the end of the shaft. The near and far ends of the eccentric wheel are always in contact with the extrusion plate.

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