A microbial sampling and detection device before water supply in a water plant

Abstract

The present invention relates to the technical field of water plant quality detection, and specifically to a microbial sampling and detection device before water supply in a water plant, comprising a transport pipe, a microbial detection box, a second liquid supply pump and a first liquid supply pump, wherein the transport pipe is provided with a first connecting seat and a second connecting seat, the interior of the first connecting seat is provided with a detection rod, the detection rod is provided with a plurality of detection probes, the upper end of the first top plate is provided with a control module connected to the detection rod through an electrical signal, different liquid levels in the transport pipe can be detected by the plurality of detection probes, and each detection probe is kept at the same horizontal line with the position of each water inlet pipe, when the water flow in the transport pipe submerges the detection probe, the water inlet pipe is in an open state at this time, so that the first liquid supply pump can extract the liquid in the transport pipe at different levels when it is started, thereby ensuring that the extracted water quality is more accurate, thereby improving the accuracy of the microbial detection box during detection.

Description

Technical Field

[0001] The invention relates to the technical field of water plant quality detection, in particular to a microbial sampling and detection device before water supply in a water plant. Background Art

[0002] As we all know, with the rapid development of social economy and the continuous improvement of scientific and technological level, people's understanding of microorganisms has gradually deepened, and microorganisms are used more and more in clinical and scientific research. Existing water plants need to conduct quality inspections on the liquid in the water plants before supplying water. The correctness of microbial sampling is directly related to the accuracy of microbial data. By sampling and testing the microorganisms in the water quality, the quality of tap water in the water plant can be effectively ensured.

[0003] Existing sampling devices in water plants are mostly water sampling devices controlled by signal controllers. The sampling quantity and sampling time are fixed, and they cannot make adaptive adjustments due to changes in water flow. They cannot accurately detect the microbial content in the water. Moreover, after each test, the liquid inside the test chamber cannot be completely discharged, affecting the accuracy of the test. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the present invention provides a microbial sampling and detection device before water supply in a water plant.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a microbial sampling and detection device before water supply in a waterworks, comprising a transport pipe, a microbial detection box, a second liquid supply pump and a first liquid supply pump, the transport pipe is provided with a first connecting seat and a second connecting seat, the first connecting seat is provided with a detection rod inside, the detection rod is provided with a plurality of detection probes, the upper end of the detection rod is provided with a first top plate located on the top of the first connecting seat, the upper end of the first top plate is provided with a control module connected to the detection rod through an electrical signal, the second connecting seat is provided with a guide pipe inside, the guide pipe The pipe is provided with a plurality of water inlet pipes, the water inlet pipe is provided with a control valve, the control valve is wirelessly connected to the detection probe, the upper end of the guide pipe is provided with a second top plate, the upper end of the second top plate is provided with a liquid storage tank connected to the guide pipe, the microorganism detection box, the second liquid supply pump and the first liquid supply pump are all fixed on the upper end of the transport pipe, the input end of the first liquid supply pump is connected to the liquid storage tank through a first conduit, the output end of the first liquid supply pump is connected to the microorganism detection box through a second conduit, the upper end of the microorganism detection box is provided with a detection module, the microorganism detection box A regulating module is provided at the rear side, a detection rod connected to the detection module through an electrical signal is provided inside the microbial detection box, a liquid outlet pipe is provided at the bottom of the microbial detection box, a drain valve is provided on the liquid outlet pipe, a rotating rod penetrating the microbial detection box and located below the detection rod is provided inside the microbial detection box, a first sealed bearing is provided at one end of the rotating rod, and a second sealed bearing is provided at the other end, the first sealed bearing and the second sealed bearing are respectively embedded on the outer wall of the microbial detection box, and a sealing bearing is provided at one end of the rotating rod close to the second sealed bearing. A third sealed bearing, a plurality of nozzle assemblies are provided on the outer wall of the rotating rod, a motor is provided on the outside of the microorganism detection box, the output end of the motor is connected to one end of the rotating rod close to the first sealed bearing, a third conduit is provided at the output end of the second liquid supply pump, the other end of the third conduit passes through the rotating rod, and is an interference fit with the inner wall of the third sealed bearing, a liquid guide tube is provided on the outer wall of the transport tube, one end of the liquid guide tube passes through the transport tube, and the penetrating part of the liquid guide tube is located between the second connecting seat and the first connecting seat, and the other end of the liquid guide tube is connected to the input end of the second liquid supply pump.

[0008] In order to make the guide tube and the detection rod installed more firmly, the improvements of the present invention are that the lower ends of the guide tube and the detection rod are provided with positioning blocks, the interior of the transport tube is provided with positioning grooves that cooperate with the positioning blocks, both sides of the guide tube are provided with limit blocks, the inner wall of the second connecting seat is provided with limit grooves that cooperate with the limit blocks, and fastening pads are provided on both sides of the positioning blocks.

[0009] In order to increase the service life of the structure, the present invention has the following improvements: a protective cover is provided at the upper end of the transport pipe, and an observation window is provided on the protective cover.

[0010] In order to improve the practicability of the present structure, the present invention has the following improvements: the catheter and the third catheter are both steel tubes, and the second catheter and the first catheter are both rubber tubes.

[0011] In order to improve the cleaning effect of the detection rod, the improvements of the present invention are that the nozzle assembly includes a second nozzle located at the upper end of the rotating rod and a first nozzle located at the lower end of the rotating rod, the second nozzle and the first nozzle are respectively located on both sides of the detection rod, and the length of the second nozzle is greater than that of the first nozzle.

[0012] In order to ensure the stability of the structure when in use, the present invention is improved in that sealing gaskets are provided on the inner walls of the first top plate and the second top plate.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the present invention provides a microbial sampling and detection device before water supply in a water plant, which has the following beneficial effects:

[0015] The microbial sampling and detection device before water supply in the water plant has multiple detection probes arranged vertically on the detection rod, and multiple water inlet pipes arranged vertically on the diversion pipe. The multiple detection probes can detect different liquid levels in the transport pipe, and each detection probe is kept at the same horizontal line with the position of each water inlet pipe. When the water flow in the transport pipe submerges the detection probe, the corresponding detection probe will control the control valve on the corresponding water inlet pipe to start. At this time, the water inlet pipe is in an open state, so that the first liquid supply pump can extract the liquid in the transport pipe at different levels when it is started, thereby ensuring that the extracted water quality is more accurate, thereby improving the accuracy of the microbial detection box during detection;

[0016] The motor is started, and the first sealed bearing and the second sealed bearing cause the rotating rod to rotate inside the microorganism detection box. At this time, the high-pressure liquid is sprayed out at the nozzle assembly, thereby providing a flushing effect on the inner wall of the microorganism detection box. In addition, the rotating rod is rotating at this time, so the flushing effect of the high-pressure liquid on the inner wall of the microorganism detection box can be further improved, thereby ensuring the accuracy of the detection rod in the next detection, so that there will be no residual liquid on the detection rod and the inner wall of the microorganism detection box, thereby improving the stability of the structure when in use;

[0017] When the rotating rod rotates, high-pressure liquid will be sprayed out at the second nozzle, and through the first nozzle and the second nozzle of different lengths, it can be ensured that the inner wall of the detection rod and the microorganism detection box can be fully cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure of the microbial detection box;

[0020] Figure 3 For the present invention Figure 1 Schematic diagram of the structure of the middle flow guide tube;

[0021] Figure 4 For the present invention Figure 1 Schematic diagram of the structure of the detection rod;

[0022] Figure 5 This is a schematic diagram of the structure of the water tank in the water plant;

[0023] In the figure: 1, transport pipe; 2, protective cover; 3, first connecting seat; 4, second connecting seat; 5, first top plate; 6, detection rod; 7, detection probe; 8, second nozzle; 9, guide tube; 10, liquid guide tube; 11, water inlet pipe; 12, control valve; 13, second top plate; 14, liquid storage tank; 15, first liquid supply pump; 16, first conduit; 17, second conduit; 18, motor; 19, microbial detection box; 20, control module; 21, detection module; 22, second liquid supply pump; 23, third conduit; 24, detection rod; 25, rotating rod; 26, first sealed bearing; 27, first nozzle; 28, third sealed bearing; 29, second sealed bearing; 30, positioning block; 31, fastening pad; 32, limit block; 33, detection module; 34, liquid outlet pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-5The present invention provides a microbial sampling and detection device before water supply in a waterworks, comprising a transport pipe 1, a microbial detection box 19, a second liquid supply pump 22 and a first liquid supply pump 15. The transport pipe 1 is provided with a first connecting seat 3 and a second connecting seat 4. A detection rod 6 is provided inside the first connecting seat 3, and a plurality of detection probes 7 are provided on the detection rod 6. A first top plate 5 located at the top of the first connecting seat 3 is provided at the upper end of the detection rod 6. A control module 33 connected to the detection rod 6 through an electrical signal is provided at the upper end of the first top plate 5. A flow guide pipe 9 is provided inside the second connecting seat 4, and a plurality of water inlet pipes 11 are provided on the flow guide pipe 9. The water inlet pipe 11 is provided with a control module 33. The control valve 12 is wirelessly connected to the detection probe 7, a second top plate 13 is provided at the upper end of the guide tube 9, a liquid storage tank 14 connected to the guide tube 9 is provided at the upper end of the second top plate 13, the microorganism detection box 19, the second liquid supply pump 22 and the first liquid supply pump 15 are all fixed at the upper end of the transport pipe 1, the input end of the first liquid supply pump 15 is connected to the liquid storage tank 14 through a first conduit 16, the output end of the first liquid supply pump 15 is connected to the microorganism detection box 19 through a second conduit 17, a detection module 21 is provided at the upper end of the microorganism detection box 19, and a control module 20 is provided at the rear side of the microorganism detection box 19. The inside of the microorganism detection box 19 is provided with a detection rod 24 connected to the detection module 21 through an electrical signal, the bottom of the microorganism detection box 19 is provided with a liquid outlet pipe 34, and the liquid outlet pipe 34 is provided with a drain valve, and the inside of the microorganism detection box 19 is provided with a rotating rod 25 that penetrates the microorganism detection box 19 and is located below the detection rod 24, one end of the rotating rod 25 is provided with a first sealed bearing 26, and the other end is provided with a second sealed bearing 29, the first sealed bearing 26 and the second sealed bearing 29 are respectively embedded in the outer wall of the microorganism detection box 19, and the end of the rotating rod 25 close to the second sealed bearing 29 is provided with a third sealed shaft embedded in the inner wall of the rotating rod 25 The outer wall of the rotating rod 25 is provided with a plurality of nozzle assemblies, the outside of the microorganism detection box 19 is provided with a motor 18, the output end of the motor 18 is connected to one end of the rotating rod 25 close to the first sealing bearing 26, the output end of the second liquid supply pump 22 is provided with a third conduit 23, the other end of the third conduit 23 penetrates the rotating rod 25, and is interference fit with the inner wall of the third sealing bearing 28, the outer wall of the transport pipe 1 is provided with a liquid guide tube 10, one end of the liquid guide tube 10 penetrates the transport pipe 1, and the penetrating part of the liquid guide tube 10 is located between the second connecting seat 4 and the first connecting seat 3, and the other end of the liquid guide tube 10 is connected to the input end of the second liquid supply pump 22;

[0026] Before the water plant supplies water, tap water is stored in a large pool, in which a plurality of separate water tanks are distributed. Each water tank is provided with a drain pipe, and the plurality of drain pipes are connected in parallel with the transport pipe 1. When draining water, the water is drained in the order of the water tanks. When the water flows inside the transport pipe 1, the microbial sampling and detection device at the upper end of the transport pipe 1 will detect the microorganisms in the tap water to ensure the water quality. Here, since the water pressure in the transport pipe 1 is uncontrollable, the liquid level inside the transport pipe 1 is uncontrollable. The first top plate 5 and the second top plate 13 are respectively fixed to the upper end of the first connecting seat 3 and the upper end of the second connecting seat 4 by screws. A plurality of detection probes 7 are vertically arranged on the detection rod 6, and a plurality of water inlet pipes 11 are vertically arranged on the guide pipe 9. The different liquid levels in the transport pipe 1 can be detected by multiple detection probes 7, and each detection probe 7 is kept at the same horizontal line with each water inlet pipe 11. When the water flow in the transport pipe 1 submerges the detection probe 7, the corresponding detection probe 7 will control the control valve 12 on the corresponding water inlet pipe 11 to start. At this time, the water inlet pipe 11 is in an open state, so that the first liquid supply pump 15 can extract the liquid in the transport pipe 1 at different levels when it is started, thereby ensuring that the extracted water quality is more accurate, thereby improving the accuracy of the microbial detection box 19 during detection. The liquid in the transport pipe 1 is extracted into the first conduit 16 by the first liquid supply pump 15, and then transported to the inside of the microbial detection box 19 by the second conduit 17. At this time, the detection module 21 will control the detection module 21 to start the detection module 21. The measuring rod 24 performs microbial sampling and detection on the liquid in the microbial detection box 19. Here, the detection module 21 and the detection rod 24 are both existing water quality detection equipment, so there is no need to describe them in detail. During this process, the control module 20 can transmit the information parameters detected on the detection module 21 to the designated equipment through wireless signals, so that the staff can always understand the current water quality conditions. When the detection is completed, the control module 20 will control the drain valve on the liquid outlet pipe 34 to open through an electrical signal. At this time, the water sample inside the microbial detection box 19 will be discharged through the liquid outlet pipe 34. At this time, the second liquid supply pump 22 will be started, and the liquid inside the further transport pipe 1 will be pumped into the inner part of the rotating rod 25 through the liquid guide tube 10 and the third conduit 23. At this time, the motor 18 is started, and the first sealed bearing 26 and the second sealed bearing 29 cause the rotating rod 25 to rotate inside the microorganism detection box 19. At this time, the high-pressure liquid is sprayed out at the nozzle assembly, thereby providing a flushing effect on the inner wall of the microorganism detection box 19. At this time, the rotating rod 25 is rotating, so the flushing effect of the high-pressure liquid on the inner wall of the microorganism detection box 19 can be further improved, thereby ensuring the accuracy of the detection rod 24 in the next detection, so that there will be no residual liquid on the detection rod 24 and the inner wall of the microorganism detection box 19, thereby improving the stability of the present structure when in use. The third sealed bearing 28 is provided, so that the rotating rod 25 can be rotated normally on the third conduit 23. Here,The first sealed bearing 26, the third sealed bearing 28 and the second sealed bearing 29 are all existing bearing structures, which are often used in stirring equipment in the chemical field. In this structure, since the through end of the liquid guide tube 10 is located between the second connecting seat 4 and the first connecting seat 3, that is, the part drawn by the second liquid supply pump 22 is the liquid before the detection rod 24 detects, it does not affect the detection accuracy of this structure.

[0027] When the guide tube 9 and the detection rod 6 are located inside the transport tube 1, since there is no limiting structure at the bottom thereof, when the impact force of the water flow is too large, the guide tube 9 and the detection rod 6 will shake. In order to make the guide tube 9 and the detection rod 6 installed more firmly, the improvement of the present invention is that the lower end of the guide tube 9 and the lower end of the detection rod 6 are both provided with a positioning block 30, the interior of the transport tube 1 is provided with a positioning groove that cooperates with the positioning block 30, and fastening pads 31 are provided on both sides of the positioning block 30, and limiting blocks 31 are provided on both sides of the guide tube 9. 2. A limiting groove cooperating with the limiting block 32 is provided on the inner wall of the second connecting seat 4. Here, when the guide tube 9 and the detection rod 6 are respectively inserted into the second connecting seat 4 and the first connecting seat 3, the positioning block 30 will be inserted into the positioning groove, and the limiting block 32 will be squeezed at this time, so that the positioning block 30 is more firmly fixed in the positioning groove. The fastening pad 31 can be a rubber pad here. Through the mutual cooperation of the limiting groove and the limiting block 32, a limiting effect can be provided to the guide tube 9 in the second connecting seat 4.

[0028] When the present structure is in use, it will be exposed to the outside for a long time. In order to increase the service life of the present structure, the present invention has been improved in that a protective cover 2 is provided at the upper end of the transport pipe 1, and an observation window is provided on the protective cover 2. The protective cover 2 can protect the entire structure, and the situation inside the protective cover 2 can be clearly seen from the outside of the protective cover 2 through the observation window.

[0029] In order to improve the practicality of the present structure, the improvements of the present invention are that the catheter 10 and the third catheter 23 are both steel tubes, and the second catheter 17 and the first catheter 16 are both rubber tubes. Here, the steel tube has high hardness and is not easy to be damaged, and the rubber tube has high flexibility, is easy to bend, and has strong practicality.

[0030] When the rotating rod 25 rotates, high-pressure liquid will be sprayed out at the second nozzle 8. Figure 2As shown, if the length of the second nozzle 8 is too long, the bottom of the detection rod 24 cannot be effectively cleaned. If the length of the second nozzle 8 is too short, the top of the detection rod 24 cannot be effectively cleaned. In order to improve the cleaning effect of the detection rod 24, the improvements of the present invention are that the nozzle assembly includes a second nozzle 8 located at the upper end of the rotating rod 25 and a first nozzle 27 located at the lower end of the rotating rod 25. The second nozzle 8 and the first nozzle 27 are respectively located on both sides of the detection rod 24, and the length of the second nozzle 8 is greater than that of the first nozzle 27. Through the uneven lengths of the first nozzle 27 and the second nozzle 8, it can be ensured that the detection rod 24 and the inner wall of the microorganism detection box 19 can be fully cleaned.

[0031] When the water flow inside the transport pipe 1 is too large, liquid seepage will occur at the edges of the first connecting seat 3 and the second connecting seat 4. In order to ensure the stability of the present structure during use, the present invention has improvements that sealing gaskets are provided on the inner walls of the first top plate 5 and the second top plate 13. When the detection rod 6 and the guide tube 9 are installed, the first top plate 5 and the guide tube 9 will squeeze the sealing gaskets respectively, thereby ensuring the sealing of the joint between the first top plate 5 and the first connecting seat 3, and ensuring the sealing of the joint between the second top plate 13 and the second connecting seat 4. The sealing gasket here can be a silicone gasket, which has high flexibility and good sealing performance.

[0032] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0033] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0034] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0035] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0036] Without further limitations, in this application, the words "include", "comprises", "has" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0037] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0038] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A microbial sampling and detection device before water supply in a water plant, characterized in that: The invention comprises a transport pipe (1), a microorganism detection box (19), a second liquid supply pump (22) and a first liquid supply pump (15); the transport pipe (1) is provided with a first connecting seat (3) and a second connecting seat (4); a detection rod (6) is provided inside the first connecting seat (3); a plurality of detection probes (7) are provided on the detection rod (6); a first top plate (5) located on the top of the first connecting seat (3) is provided at the upper end of the detection rod (6); a control module (33) connected to the detection rod (6) via an electrical signal is provided at the upper end of the first top plate (5); a flow guide pipe (9) is provided inside the second connecting seat (4); a plurality of water inlet pipes (11) are provided on the flow guide pipe (9); a control module (33) is provided on the water inlet pipe (11); The control valve (12) is wirelessly connected to the detection probe (7); the upper end of the flow guide tube (9) is provided with a second top plate (13); the upper end of the second top plate (13) is provided with a liquid storage tank (14) connected to the flow guide tube (9); the microorganism detection box (19), the second liquid supply pump (22) and the first liquid supply pump (15) are all fixed to the upper end of the transport pipe (1); the input end of the first liquid supply pump (15) is connected to the liquid storage tank (14) via a first conduit (16); the output end of the first liquid supply pump (15) is connected to the microorganism detection box (19) via a second conduit (17); the upper end of the microorganism detection box (19) is provided with a detection module (21); ... A control module (20) is provided at the rear side of the microorganism detection box (19); a detection rod (24) connected to the detection module (21) through an electrical signal is provided inside the microorganism detection box (19); a liquid outlet pipe (34) is provided at the bottom of the microorganism detection box (19); a liquid discharge valve is provided on the liquid outlet pipe (34); a rotating rod (25) penetrating the microorganism detection box (19) and located below the detection rod (24) is provided inside the microorganism detection box (19); a first sealed bearing (26) is provided at one end of the rotating rod (25), and a second sealed bearing (29) is provided at the other end; the first sealed bearing (26) and the second sealed bearing (29) are respectively embedded on the outer wall of the microorganism detection box (19); A third sealed bearing (28) embedded in the inner wall of the rotating rod (25) is provided at one end of the rotating rod (25) close to the second sealed bearing (29); a plurality of nozzle assemblies are provided on the outer wall of the rotating rod (25); a motor (18) is provided outside the microorganism detection box (19); an output end of the motor (18) is connected to one end of the rotating rod (25) close to the first sealed bearing (26); a third conduit (23) is provided at the output end of the second liquid supply pump (22); the other end of the third conduit (23) passes through the rotating rod (25) and is interference fit with the inner wall of the third sealed bearing (28); a liquid guide tube (10) is provided on the outer wall of the transport tube (1); one end of the liquid guide tube (10) passes through the transport tube (1);The through portion of the liquid guiding tube (10) is located between the second connecting seat (4) and the first connecting seat (3), and the other end of the liquid guiding tube (10) is connected to the input end of the second liquid supply pump (22); A plurality of detection probes (7) are arranged vertically on the detection rod (6), and a plurality of water inlet pipes (11) are arranged vertically on the flow guide pipe (9). Different liquid levels in the transport pipe (1) can be detected by the plurality of detection probes (7), and each detection probe (7) and each water inlet pipe (11) are located at the same horizontal line. When the water flow in the transport pipe (1) submerges the detection probe (7), the corresponding detection probe (7) controls the control valve (12) on the corresponding water inlet pipe (11) to start. At this time, the water inlet pipe (11) is in an open state, so that the first liquid supply pump (15) can extract liquid in the transport pipe (1) at different levels when it is started. The detection module (21) controls the detection rod (24) to perform microbial sampling and detection on the liquid in the microbial detection box (19); When the detection is completed, the control module (20) will control the drain valve on the liquid outlet pipe (34) to open through an electrical signal. At this time, the water sample inside the microorganism detection box (19) will be discharged through the liquid outlet pipe (34). At this time, the second liquid supply pump (22) will be started, and the liquid inside the transport pipe (1) will be pumped into the inside of the rotating rod (25) through the third guide tube (23) through the liquid guide tube (10). At this time, the motor (18) is started. At this time, the first sealed bearing (26) and the second sealed bearing (29) will cause the rotating rod (25) to rotate inside the microorganism detection box (19). At this time, high-pressure liquid will be sprayed out at the nozzle assembly, thereby providing a flushing effect on the inner wall of the microorganism detection box (19).

2. A microbial sampling and detection device before water supply in a waterworks according to claim 1, characterized in that: The lower ends of the guide pipe (9) and the detection rod (6) are both provided with positioning blocks (30), the interior of the transport pipe (1) is provided with positioning grooves that cooperate with the positioning blocks (30), and fastening pads (31) are provided on both sides of the positioning blocks (30).

3. A microbial sampling and detection device before water supply in a waterworks according to claim 2, characterized in that: The upper end of the transport pipe (1) is provided with a protective cover (2), and the protective cover (2) is provided with an observation window.

4. A microbial sampling and detection device before water supply in a waterworks according to claim 3, characterized in that: Limit blocks (32) are provided on both sides of the flow guide pipe (9), and a limit groove cooperating with the limit blocks (32) is provided on the inner wall of the second connecting seat (4).

5. A microbial sampling and detection device before water supply in a waterworks according to claim 4, characterized in that: A fixing plate is provided at the bottom of the microorganism detection box (19), and the fixing plate is fixed to the transport pipe (1) by means of screws.

6. A microbial sampling and detection device before water supply in a waterworks according to claim 5, characterized in that: The catheter (10) and the third catheter (23) are both steel tubes, and the second catheter (17) and the first catheter (16) are both rubber tubes.

7. A microbial sampling and detection device before water supply in a waterworks according to claim 6, characterized in that: The nozzle assembly comprises a second nozzle (8) located at the upper end of the rotating rod (25) and a first nozzle (27) located at the lower end of the rotating rod (25); the second nozzle (8) and the first nozzle (27) are respectively located on both sides of the detection rod (24), and the length of the second nozzle (8) is greater than that of the first nozzle (27).

8. The microbial sampling and detection device before water supply in a waterworks according to claim 7, characterized in that: Sealing gaskets are provided on the inner walls of the first top plate (5) and the second top plate (13).

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