Water quality monitoring analyzer

Abstract

The invention relates to the technical field of water quality monitoring, in particular to a water quality monitoring analyzer which comprises a monitoring box, a water quality monitor is fixedly connected to the top of the inner wall of the monitoring box, a partition plate is fixedly connected between the two sides of the inner wall of the monitoring box, and a plurality of reagent bottles which are evenly arranged at equal intervals are placed at the top of the partition plate. A plurality of waste water recycling boxes are placed at the bottom of the inner wall of the monitoring box, a water inlet pipe is fixedly connected to the side wall of the monitoring box, conveying pipes are fixedly connected to the tops of the reagent bottles and the waste water recycling boxes, one end of each conveying pipe is fixedly connected to the bottom of the water quality monitor, and a flexible expansion bag is fixedly connected to the middle of each conveying pipe. Compared with the prior art, the conveying pipe can be arranged, the problems of winding, bending and the like can be prevented, it is ensured that the conveying path of reagents is clear and unobstructed, active monitoring and fault prompting of the conveying pipe are achieved, and workers can rapidly dredge the blocked conveying pipe in time.

Description

Technical Field

[0001] The present invention relates to the technical field of water quality monitoring, and in particular to a water quality monitoring and analyzing instrument. Background Art

[0002] The COD water quality monitor is an instrument used to measure the chemical oxygen demand in water. Chemical oxygen demand is an important indicator of water quality. It indicates the oxidation demand of organic matter in water and reflects the degree of organic pollution in water. When the COD water quality monitor is used, it mainly evaluates the degree of organic pollution in water through chemical oxidation reaction. During the test, the instrument first mixes the water sample with multiple oxidants (such as potassium dichromate) and acidic reagents (such as concentrated sulfuric acid). Strong oxidants will oxidize organic matter in water samples in an acidic environment and consume oxygen. In order to ensure sufficient reaction, the instrument usually heats the water sample to a certain temperature to accelerate the oxidation reaction. After the reaction, the instrument measures the remaining amount of oxidant or the color change in the water sample to deduce the COD value. The remaining oxidant amount is usually measured by photometry or titration, or the absorbance of the water sample (i.e., color change) is measured by a photometer to indirectly calculate the COD concentration in the water sample. Therefore, multiple reagent bottles are required to store reagents to meet the use requirements.

[0003] The existing water quality monitors have a large number of infusion tubes between the reagent bottles and the monitors and their arrangement is complex. These infusion tubes are prone to entanglement, bending or crossing, which affects the smoothness of reagent delivery. At the same time, the entanglement of the infusion tubes not only increases the risk of blockage during reagent delivery, but also increases the difficulty of equipment maintenance, affecting the accuracy and stability of the test results. At the same time, the existing water quality monitors do not provide effective monitoring methods for the blockage problem of infusion pipelines. Due to the large number of infusion tubes and their complex arrangement, impurities in the liquid, etc., blockage or obstruction is prone to occur after long-term use, and the occurrence of blockage is usually hidden. Failure to discover and deal with it in time will lead to insufficient or complete stagnation of reagent flow, thereby affecting the accuracy and timeliness of water quality testing, and affecting the stable operation of the instrument and data accuracy. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose a water quality monitoring and analyzing instrument to solve the problem that the existing water quality monitoring instrument has a large number of infusion tubes between the reagent bottle and the monitor and their complex arrangement. These infusion tubes are prone to entanglement, bending or crossing, which affects the smoothness of reagent delivery. At the same time, the entanglement of the infusion tubes not only increases the difficulty of maintenance of the equipment, but also due to the large number of infusion tubes and their complex arrangement, they are prone to blockage or obstruction after long-term use.

[0005] Based on the above purpose, the present invention provides a water quality monitoring analyzer, including a monitoring box, the top of the inner wall of the monitoring box is fixedly connected to the water quality monitor, a partition is fixedly connected between the two sides of the inner wall of the monitoring box, a plurality of equidistant and uniform reagent bottles are placed on the top of the partition, a plurality of wastewater recovery boxes are placed on the bottom of the inner wall of the monitoring box, a water inlet pipe is fixedly connected to the side wall of the monitoring box, the tops of the reagent bottles and the wastewater recovery boxes are fixedly connected to delivery pipes, one end of the delivery pipe is fixedly connected to the bottom of the water quality monitor, a flexible expansion bag is fixedly connected to the middle part of the delivery pipe, and the inner wall of the monitoring box is provided with A limiting mechanism for limiting the position of the conveying pipe, the inner wall and the outer wall of the monitoring box are provided with an anti-blocking mechanism for reminding when the conveying pipe is blocked, the limiting mechanism includes a mounting plate, the mounting plate is fixedly connected to the inner wall of the monitoring box, the side wall of the mounting plate is fixedly connected with two sets of fixed blocks opposite to each other, connecting columns are fixedly connected between the opposite surfaces of the fixed blocks, the outer walls on both sides of the connecting columns are rotatably connected with relative arc-shaped clamping plates, the opposite sides of the arc-shaped clamping plates are fixedly connected with extrusion blocks, the side walls of the extrusion blocks are fixedly connected with telescopic springs, and one end of the telescopic spring is fixedly connected to the side wall of the mounting plate.

[0006] Preferably, the anti-blocking mechanism includes a fixed plate fixedly connected to the middle part of the mounting plate, the side wall of the fixed plate is fixedly connected with an equidistant and uniform limiting plate, the side wall of the fixed plate near the side wall of the limiting plate is slidably connected to a sliding plate, one end of the inner wall of the fixed plate is fixedly connected with an extrusion spring, and the side wall of the sliding plate away from one end of the extrusion spring is rotatably connected to the limiting push plate, one end of the limiting push plate is fixedly connected to the extrusion plate, and the side wall of the limiting push plate near the sliding plate is fixedly connected to a plurality of evenly distributed contact blocks, the side walls of the contact blocks respectively contact with the side walls of the sliding plate, one end of the extrusion spring is fixedly connected to the sliding plate near one side of the extrusion plate, the side wall of the limiting push plate is fixedly connected with a concave block, the inside of the concave block is fixedly connected with a magnet, and an iron block is fixedly connected to the side wall of the sliding plate near one end of the extrusion spring, and the magnet is in contact with the iron block.

[0007] Preferably, a communication port is provided at one end of the side wall of the monitoring box close to the extrusion plate, and a side wall of one side of the monitoring box close to the communication port is slidably connected to a toothed plate, one end of the toothed plate is in an arc shape, the side wall of the extrusion plate contacts one end of the toothed plate, a return spring is fixedly connected to the side wall of the monitoring box, one end of the return spring is fixedly connected to the side wall of the monitoring box, a gear is meshed at the top of the toothed plate, the gear is rotatably connected to the side wall of the monitoring box, one end of the shaft of the gear is fixedly connected to a planetary gear, and the side of the monitoring box A rotating block is rotatably connected to the wall near the top of the planetary wheel, and a connecting rod is fixedly connected to the side wall of the rotating block. A groove is opened inside one end of the connecting rod, and a retraction spring is fixedly connected to the inner wall of the groove. One end of the retraction spring is fixedly connected to a contact rod, and one end of the contact rod is slidably connected in the groove. The side wall of the contact rod is in contact with the outer wall of the planetary wheel, and a knocking hammer is fixedly connected to the side wall of the rotating block. A bell is fixedly connected to the side wall of the monitoring box near the knocking hammer, and the knocking hammer is in contact with the bell.

[0008] Preferably, a roller is rotatably connected to one side of the arc-shaped clamping plate.

[0009] Preferably, the side walls of the mounting plate close to the bottom of the arc-shaped clamping plate are fixedly connected with a plurality of equidistant and evenly distributed label grooves.

[0010] Preferably, the flexible expansion bag is located between the limiting plate and the sliding plate and is in contact with the limiting plate and the inner wall of the sliding plate.

[0011] Preferably, the contact rod is V-shaped.

[0012] Preferably, the inner wall of the concave block is matched with the outer wall of the sliding plate.

[0013] Preferably, the striking hammer is inclined toward the bell side and the weight of the striking hammer is greater than the weight of one end of the connecting rod.

[0014] Beneficial effects of the present invention: 1. A water quality monitoring and analyzer, when the limiting mechanism is in use, the delivery tube is squeezed into the arc-shaped clamping plate, and then the squeezing block is squeezed by the telescopic spring, and the squeezing block drives the arc-shaped clamping plate to rotate, so as to limit the delivery tube. At the same time, the delivery tubes of different widths can also be clamped and limited, so as to effectively organize the infusion pipeline, ensure the smoothness of reagent delivery, facilitate the subsequent repair and maintenance of the equipment, and solve the problems of too many delivery tubes, random placement, easy entanglement, excessive bending or crossing, etc., which affect the smoothness of reagent delivery. At the same time, the entanglement of the delivery tube not only increases the risk of blockage during reagent delivery, but also increases the difficulty of equipment maintenance, affecting the accuracy and stability of the test results. The delivery tube can be organized to prevent problems such as entanglement and bending, ensure that the delivery path of the reagent is clear and unobstructed, reduce the risk of blockage, and reduce the difficulty of equipment maintenance, thereby improving the uniformity and stability of reagent delivery.

[0015] 2. A water quality monitoring and analyzer, in which the anti-clogging mechanism pushes the limit plate after the flexible expansion bag is expanded, and the limit plate further pushes the contact block, and the contact block pushes the limit push plate to move, and the limit push plate pushes the tooth plate through the extrusion plate, thereby driving the knocking hammer to knock and ring the bell, so that the anti-clogging mechanism can monitor the flow status of the delivery pipe in real time, detect blockage in time and give warnings, solves the problem that due to the large number of delivery pipes and complex layout, impurities in the liquid, etc., blockage or obstruction is easy to occur after long-term use, resulting in insufficient or complete stagnation of reagent flow, thereby affecting the accuracy and timeliness of water quality detection, and further affecting the stable operation of the instrument, and achieves active monitoring and fault prompts of the delivery pipe, so that the staff can quickly dredge the blocked delivery pipe in time, avoid the influence of reagent delivery stagnation on the monitoring process, and significantly improve the stability of use and convenience of maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the arc-shaped clamping plate and the label slot of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the fixing plate and the extrusion plate of the present invention; Figure 5It is a schematic diagram of the three-dimensional structure of the flexible expansion bag of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the striking hammer and the bell of the present invention; Figure 7 For the present invention Figure 6 A in the middle is an enlarged schematic diagram of the three-dimensional structure; Figure 8 It is a schematic diagram of the three-dimensional structure of the gear plate and the planetary gear of the present invention.

[0018] The markings in the figure are: 1. Monitoring box; 2. Water quality monitor; 3. Partition; 4. Reagent bottle; 5. Wastewater recovery box; 6. Delivery pipe; 7. Flexible expansion bag; 8. Mounting plate; 9. Fixed block; 10. Connecting column; 11. Arc clamping plate; 12. Extrusion block; 13. Telescopic spring; 14. Fixed plate; 15. Limit plate; 16. Sliding plate; 17. Limit push plate; 18. Extrusion plate; 19. Contact block; 20. Concave block; 21. Magnet; 22. Iron block; 23. Extrusion spring; 24. Connecting port; 25. Tooth plate; 26. Gear; 27. Planetary gear; 28. Rotating block; 29. ​​Connecting rod; 30. Groove; 31. Retraction spring; 32. Contact rod; 33. Hammer; 34. Bell; 35. Roller; 36. Label slot; 37. Reset spring; 38. Water inlet pipe. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] like Figures 1 to 8As shown, a water quality monitoring analyzer comprises a monitoring box 1, a water quality monitor 2 is fixedly connected to the top of the inner wall of the monitoring box 1, a partition 3 is fixedly connected between the two sides of the inner wall of the monitoring box 1, a plurality of reagent bottles 4 are placed on the top of the partition 3 at equal distances, a plurality of wastewater recovery boxes 5 are placed on the bottom of the inner wall of the monitoring box 1, a water inlet pipe 38 is fixedly connected to the side wall of the monitoring box 1, a delivery pipe 6 is fixedly connected to the top of the reagent bottle 4 and the wastewater recovery box 5, one end of the delivery pipe 6 is fixedly connected to the bottom of the water quality monitor 2, a flexible expansion bag 7 is fixedly connected to the middle part of the delivery pipe 6, and the inner wall of the monitoring box 1 is provided with a water inlet pipe 38. The inner and outer walls of the monitoring box 1 are provided with an anti-blocking mechanism for reminding when the conveying pipe 6 is blocked. The limiting mechanism includes a mounting plate 8, which is fixedly connected to the inner wall of the monitoring box 1, and the side walls of the mounting plate 8 are fixedly connected with two sets of fixed blocks 9 opposite to each other, and connecting columns 10 are fixedly connected between the opposite surfaces of the fixed blocks 9, and the outer walls on both sides of the connecting columns 10 are rotatably connected with opposite arc-shaped clamping plates 11, and the opposite sides of the arc-shaped clamping plates 11 are fixedly connected with extrusion blocks 12, and the side walls of the extrusion blocks 12 are fixedly connected with telescopic springs 13, and one end of the telescopic spring 13 is fixedly connected to the side wall of the mounting plate 8; When the limiting mechanism is in use, firstly, the two ends of the delivery pipe 6 are connected to the water quality monitor 2 and the reagent bottle 4 or the waste water recovery box 5 respectively, and then the middle part of the delivery pipe 6 is moved to the side wall of the arc splint 11, and pressure is applied to the delivery pipe 6. The outer wall of the delivery pipe 6 will squeeze the roller 35, and the roller 35 squeezes the arc splint 11. Then, the arc splint 11 will squeeze the telescopic spring 13 of the side wall through the squeezing block 12. When the delivery pipe 6 enters the interior of the arc splint 11, the telescopic spring 13 will push the squeezing block 12, and the squeezing block 12 drives the arc splint 11 to close, so that the delivery pipe 6 can be limited, thereby achieving the effect of arranging the delivery pipe 6. When the limiting mechanism is in use, the delivery pipe 6 is squeezed into the arc splint 11, and then the squeezing block 12 is squeezed through the telescopic spring 13. The extrusion block 12 drives the arc-shaped clamping plate 11 to rotate, thereby limiting the position of the delivery tube 6. At the same time, the delivery tubes 6 of different widths can also be clamped and limited, thereby effectively organizing the infusion pipeline, ensuring the smoothness of reagent delivery, and facilitating subsequent repair and maintenance of the equipment. It solves the problem that there are too many delivery tubes 6, which are placed randomly, and are prone to entanglement and excessive bending or crossing, which affect the smoothness of reagent delivery. At the same time, the entanglement of the delivery tube 6 not only increases the risk of blockage during reagent delivery, but also may increase the difficulty of equipment maintenance, affecting the accuracy and stability of the test results. The delivery tube 6 can be organized to prevent problems such as entanglement and bending, ensure that the reagent delivery path is clear and unobstructed, reduce the risk of blockage, and reduce the difficulty of equipment maintenance, thereby improving the uniformity and stability of reagent delivery.

[0022] For further information, see Attachment Figures 4 to 8As shown, the anti-blocking mechanism includes a fixed plate 14 fixedly connected to the middle part of the mounting plate 8, the side wall of the fixed plate 14 is fixedly connected with an equidistant and uniform limiting plate 15, the side wall of the fixed plate 14 close to the limiting plate 15 is slidably connected with a sliding plate 16, the inner wall of one end of the fixed plate 14 is fixedly connected with an extrusion spring 23, the side wall of the sliding plate 16 away from the end of the extrusion spring 23 is rotatably connected with a limiting push plate 17, one end of the limiting push plate 17 is fixedly connected with an extrusion plate 18, and the side wall of the limiting push plate 17 close to the sliding plate 16 is fixedly connected with a plurality of uniformly distributed contact blocks 19 The side walls of the contact block 19 are in contact with the side walls of the sliding plate 16 respectively, one end of the extrusion spring 23 is fixedly connected to the sliding plate 16 near the side of the extrusion plate 18, the side wall of the limit push plate 17 is fixedly connected with a concave block 20, the inner wall of the concave block 20 is adapted to the outer wall of the sliding plate 16, the interior of the concave block 20 is fixedly connected with a magnet 21, and the side wall of the sliding plate 16 near one end of the extrusion spring 23 is fixedly connected with an iron block 22, and the magnet 21 is in contact with the iron block 22. The side wall of the monitoring box 1 is provided with a connecting port 24 at one end near the extrusion plate 18, and one side of the monitoring box 1 The side wall near the connecting port 24 is slidably connected to a toothed plate 25, one end of which is in an arc shape, the side wall of the extrusion plate 18 contacts one end of the toothed plate 25, the side wall of the toothed plate 25 is fixedly connected to a reset spring 37, one end of the reset spring 37 is fixedly connected to the side wall of the monitoring box 1, the top of the toothed plate 25 is meshed with a gear 26, the gear 26 is rotatably connected to the side wall of the monitoring box 1, one end of the shaft of the gear 26 is fixedly connected to a planetary gear 27, the side wall of the monitoring box 1 is rotatably connected to a rotating block 28 near the top of the planetary gear 27, and the side wall of the rotating block 28 is fixedly connected to a connecting rod 29 A groove 30 is provided inside one end of the connecting rod 29, a retraction spring 31 is fixedly connected to the inner wall of the groove 30, a contact rod 32 is fixedly connected to one end of the retraction spring 31, one end of the contact rod 32 is slidably connected in the groove 30, a side wall of the contact rod 32 is in contact with the outer wall of the planetary gear 27, a knocking hammer 33 is fixedly connected to the side wall of the rotating block 28, a bell 34 is fixedly connected to the side wall of the monitoring box 1 near the knocking hammer 33, the knocking hammer 33 is in contact with the bell 34, the knocking hammer 33 is inclined toward the side of the bell 34 and the weight of the knocking hammer 33 is greater than the weight of one end of the connecting rod 29; When the anti-blocking mechanism is in use, first place the flexible expansion bag 7 on the delivery pipe 6 into the middle part of the limit plate 15 and the sliding plate 16, the flexible expansion bag 7 is between the limit plate 15 and the sliding plate 16 and contacts with the inner walls of the limit plate 15 and the sliding plate 16, then rotate the limit push plate 17, the limit push plate 17 drives the concave block 20 to rotate, and then the concave block 20 contacts with the outer wall of the sliding plate 16 close to the side wall of the extrusion spring 23, at this time the magnet 21 is adsorbed on the outer wall of the iron block 22, and then the limit push plate 17 can be limited, when the delivery pipe 6 is blocked and the water flow is hindered, the pressure inside the delivery pipe 6 increases significantly, the water flow is forced to push forward, and the increase in pressure pushes the water flow in The flexible expansion bag 7 is entered into the flexible expansion bag 7, and the volume of the flexible expansion bag 7 expands as the amount of water entering increases. When the flexible expansion bag 7 expands, it will push the limit plate 15, and the limit plate 15 will push the contact block 19, and then the contact block 19 will push the limit push plate 17 to move. When the limit push plate 17 moves, it will push the sliding plate 16 through the concave block 20 to squeeze the squeezing spring 23. At this time, the limit push plate 17 will also push the squeezing plate 18 to move and squeeze the tooth plate 25. When the tooth plate 25 is squeezed, it will slide in the direction of the reset spring 37 and squeeze the reset spring 37. Then the tooth plate 25 drives the gear 26 to rotate by meshing with the gear 26. When the gear 26 rotates, it will drive the planetary gear 27 to rotate. When the planetary gear 27 rotates, The contact rod 32 is pushed by the outer wall shape of the planetary gear 27. After being pushed, the contact rod 32 will drive the connecting rod 29 to rotate, and the connecting rod 29 will drive the rotating block 28 to rotate. When the rotating block 28 rotates, it will be lifted and drive the knocking hammer 33 to rotate. When the outer wall tooth groove of the planetary gear 27 does not contact the contact rod 32, the knocking hammer 33 will be affected by gravity and hit the outer wall edge of the bell 34, thereby making a sound to remind the staff to come quickly to dredge the conveying pipe 6. In the anti-blocking mechanism, the limit plate 15 is pushed after the flexible expansion bag 7 is expanded. The limit plate 15 further pushes the contact block 19, and the contact block 19 pushes the limit push plate 17 to move, and the limit push plate 17 pushes the tooth plate 2 through the extrusion plate 18 5, which in turn drives the striking hammer 33 to strike the bell 34, so that the anti-blocking mechanism can monitor the flow status of the delivery pipe 6 in real time, detect blockage in time and give a warning, which solves the problem that the delivery pipe 6 is prone to blockage or obstruction after long-term use due to the large number and complex arrangement of the delivery pipe 6 and the impurities in the liquid, resulting in insufficient or complete stagnation of the reagent flow, thereby affecting the accuracy and timeliness of water quality detection and further affecting the stable operation of the instrument, and achieves active monitoring and fault prompting of the delivery pipe 6, so that the staff can promptly deal with the blocked delivery pipe 6, avoid the influence of the stagnation of reagent delivery on the monitoring process, and significantly improve the use stability and maintenance convenience of the equipment.

[0023] For further information, see Attachment Figure 3As shown, a roller 35 is rotatably connected to one side of the arc-shaped clamping plate 11 , and the roller 35 is used to reduce the friction force when the outer wall of the conveying pipe 6 squeezes the side wall of the arc-shaped clamping plate 11 .

[0024] For further information, see Attachment Figure 3 As shown, the side walls of the mounting plate 8 near the bottom of the arc-shaped clamping plate 11 are fixedly connected with a plurality of evenly distributed label slots 36 equidistantly. The label slots 36 serve to place label paper, so that it is easier to distinguish which reagent bottle 4 the delivery tube 6 is connected to.

[0025] For further information, see Attachment Figure 7 As shown, the shape of the contact rod 32 is V-shaped. Through the shape of the contact rod 32, when the extrusion plate 18 is not in contact with the tooth plate 25, the reset spring 37 will release the spring force to push the tooth plate 25 to slide toward the connecting port 24. At this time, the tooth plate 25 will drive the planetary gear 27 to rotate. When the planetary gear 27 rotates, it will squeeze the contact rod 32, and the contact rod 32 will expand and contract into the groove 30 so that it does not hinder the rotation of the planetary gear 27.

[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0027] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water quality monitoring analyzer, comprising a monitoring box (1), a water quality monitoring instrument (2) being fixedly connected to the top of the inner wall of the monitoring box (1), a partition (3) being fixedly connected between the two sides of the inner wall of the monitoring box (1), a plurality of reagent bottles (4) being placed on the top of the partition (3) at equal distances, a plurality of wastewater recovery boxes (5) being placed on the bottom of the inner wall of the monitoring box (1), and a water inlet pipe (38) being fixedly connected to the side wall of the monitoring box (1), characterized in that: The tops of the reagent bottle (4) and the wastewater recovery box (5) are fixedly connected to a delivery pipe (6), one end of the delivery pipe (6) is fixedly connected to the bottom of the water quality monitor (2), the middle part of the delivery pipe (6) is fixedly connected to a flexible expansion bag (7), the inner wall of the monitoring box (1) is provided with a limiting mechanism for limiting the delivery pipe (6), the inner wall and the outer wall of the monitoring box (1) are provided with an anti-blocking mechanism for reminding when the delivery pipe (6) is blocked, the limiting mechanism includes a mounting plate (8), and the mounting plate (8) is fixedly connected to the bottom of the water quality monitor (2). Connected to the inner wall of the monitoring box (1), the side wall of the mounting plate (8) is fixedly connected with two groups of fixed blocks (9) facing each other, and connecting columns (10) are fixedly connected between the opposite surfaces of the fixed blocks (9), and the outer walls on both sides of the connecting columns (10) are rotatably connected with opposite arc-shaped clamping plates (11), and the opposite sides of the arc-shaped clamping plates (11) are fixedly connected with extrusion blocks (12), and the side walls of the extrusion blocks (12) are fixedly connected with telescopic springs (13), and one end of the telescopic springs (13) is fixedly connected to the side wall of the mounting plate (8).

2. A water quality monitoring and analyzing instrument according to claim 1, characterized in that: The anti-blocking mechanism comprises a fixed plate (14) fixedly connected to the middle part of the mounting plate (8), the side wall of the fixed plate (14) is fixedly connected to a uniformly spaced limiting plate (15), the side wall of the fixed plate (14) close to the limiting plate (15) is slidably connected to a sliding plate (16), the inner wall of one end of the fixed plate (14) is fixedly connected to a pressing spring (23), the side wall of the sliding plate (16) away from the end of the pressing spring (23) is rotatably connected to a limiting push plate (17), one end of the limiting push plate (17) is fixedly connected to the pressing plate (18), and the side wall of the limiting push plate (17) A plurality of evenly distributed contact blocks (19) are fixedly connected to one side close to the sliding plate (16), and the side walls of the contact blocks (19) are respectively in contact with the side walls of the sliding plate (16). One end of the extrusion spring (23) is fixedly connected to the sliding plate (16) close to the side of the extrusion plate (18). A concave block (20) is fixedly connected to the side wall of the limit push plate (17), and a magnet (21) is fixedly connected inside the concave block (20). An iron block (22) is fixedly connected to the side wall of the sliding plate (16) close to one end of the extrusion spring (23), and the magnet (21) and the iron block (22) are in contact.

3. A water quality monitoring and analyzing instrument according to claim 2, characterized in that: A communication port (24) is provided at one end of the side wall of the monitoring box (1) near the extrusion plate (18); a toothed plate (25) is slidably connected to the side wall of the monitoring box (1) near the communication port (24); one end of the toothed plate (25) is in an arc shape; the side wall of the extrusion plate (18) is in contact with one end of the toothed plate (25); a return spring (37) is fixedly connected to the side wall of the toothed plate (25); one end of the return spring (37) is fixedly connected to the side wall of the monitoring box (1); a gear (26) is meshed at the top of the toothed plate (25); the gear (26) is rotatably connected to the side wall of the monitoring box (1); one end of the shaft of the gear (26) is fixedly connected to a planetary gear (27); and the side wall of the monitoring box (1) near the planetary gear (27) is fixedly connected to the side wall of the monitoring box (1). The top of the planetary gear (27) is rotatably connected to a rotating block (28), the side wall of the rotating block (28) is fixedly connected to a connecting rod (29), one end of the connecting rod (29) is provided with a groove (30), the inner wall of the groove (30) is fixedly connected to a retraction spring (31), one end of the retraction spring (31) is fixedly connected to a contact rod (32), one end of the contact rod (32) is slidably connected in the groove (30), the side wall of the contact rod (32) contacts the outer wall of the planetary gear (27), the side wall of the rotating block (28) is fixedly connected to a knocking hammer (33), and the side wall of the monitoring box (1) near the side wall of the knocking hammer (33) is fixedly connected to a bell (34), and the knocking hammer (33) contacts the bell (34).

4. A water quality monitoring and analyzing instrument according to claim 1, characterized in that: A roller (35) is rotatably connected to one side of the arc-shaped clamping plate (11).

5. A water quality monitoring and analyzing instrument according to claim 1, characterized in that: The side walls of the mounting plate (8) close to the bottom of the arc-shaped clamping plate (11) are fixedly connected with a plurality of label slots (36) that are evenly distributed at equal distances.

6. A water quality monitoring and analyzing instrument according to claim 2, characterized in that: The flexible expansion bag (7) is located between the limiting plate (15) and the sliding plate (16) and is in contact with the inner walls of the limiting plate (15) and the sliding plate (16).

7. A water quality monitoring and analyzing instrument according to claim 3, characterized in that: The contact rod (32) is in a V-shape.

8. A water quality monitoring and analyzing instrument according to claim 2, characterized in that: The inner wall of the concave block (20) is matched with the outer wall of the sliding plate (16).

9. A water quality monitoring and analyzing instrument according to claim 3, characterized in that: The striking hammer (33) is inclined toward the side of the bell (34) and the weight of the striking hammer (33) is greater than the weight of one end of the connecting rod (29).

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