Reactor for simulating growth of biological membrane of water supply pipeline

Abstract

The utility model provides a reactor for simulating water supply pipeline biofilm growth, which comprises a reaction container, a bearing component, a hanging piece and a stirring component, and an inlet is formed at the upper end of the reaction container and is suitable for injecting water into the reaction container. The bearing assembly is rotatably arranged on the inner bottom wall of the reaction container, and mounting nodes distributed at intervals in the circumferential direction are arranged on the bearing assembly. And the hanging pieces are suitable for simulating the water supply pipeline, are arranged on the mounting nodes, and are configured to sequentially pass through the positions under the inlets in response to rotation of the bearing assembly, and are taken out of the mounting nodes or loaded into the mounting nodes through the inlets. The stirring assembly is configured to stir water in the reaction container so as to simulate the hydraulic condition of the environment where the water supply pipeline is located, and therefore a biological film is cultivated on the surface of the hanging piece.

Description

Technical Field

[0001] The utility model relates to the technical fields of environmental technology and water treatment technology, in particular to a reactor for simulating the growth of biofilm in a water supply pipeline. Background Art

[0002] Urban water supply pipelines and water supply pipe networks are important components of modern urban infrastructure, undertaking the important task of providing a stable water source for residents' lives, industrial production, fire protection, etc. In terms of structure, materials such as ductile iron, stainless steel, and plastic are gradually applied to water supply pipelines due to their advantages of corrosion resistance and wear resistance. The pipeline connection technology has also developed from traditional welding and threaded connections to flange connections, electrofusion connections, etc., improving the sealing and safety of the pipeline system. In terms of design and monitoring, through computational fluid dynamics analysis, the internal water flow state of the pipeline can be simulated, and parameters such as water pressure and flow rate can be predicted, providing data support for pipeline design and pipe network optimization. Through devices such as flow meters, pressure sensors, and water quality monitoring, the operation state of the pipe network can be monitored in real time, and problems can be discovered and processed in a timely manner.

[0003] In the case of increasingly scarce water resources, the safe operation of water supply pipelines is particularly important. The growth problem of biofilm in water supply pipelines has always been a key factor affecting water quality safety. Due to the regrowth of microorganisms in the drinking water pipe network and the formation and shedding of biofilm in the pipeline, the water quality may deteriorate in the pipe network. In order to improve the service performance and operation and maintenance efficiency of water supply pipelines, it is necessary to study the growth law of biofilm in water supply pipelines and continuously optimize the design of water supply pipelines and pipe networks.

[0004] In related technologies, there is a water supply pipeline microorganism growth reactor that can simulate the internal environment of a water supply pipeline, such as pipe diameter, material, and hydraulic conditions, so as to reproduce the growth process of microorganisms on the pipeline wall in the reactor. However, the current reactor has a complex structure. Before the experiment, the experimental samples need to be loaded into the reactor and then the reactor is sealed. Since the reactor has high requirements for sealing, the assembly work is also more cumbersome. After the experiment, the reactor needs to be disassembled to take out the test samples and then the next set of experiments is carried out. During this period, the large area inside the reactor is in contact with the air, resulting in pollution. Even if strict encapsulation is carried out during subsequent experiments, it loses its meaning. Therefore, how to optimize and improve the reactor structure to reduce the pollution caused by taking and placing experimental samples has become an urgent technical problem to be solved. Summary of the Utility Model

[0005] In view of this, the utility model provides a reactor for simulating the growth of biofilm in a water supply pipeline, and a rotatable bearing component is arranged in the reactor. With the rotation of the bearing component, the hanging pieces are taken and placed from the inlet, which is simple to operate and effectively reduces the pollution to the inside of the reactor.

[0006] To achieve the above object, the present utility model provides a reactor for simulating the growth of biofilm in a water supply pipeline, comprising: a reaction vessel, an inlet is formed at the upper end of the reaction vessel, which is adapted to inject water into the reaction vessel; a carrying assembly, rotatably arranged on the inner bottom wall of the reaction vessel, and installation nodes are arranged on the carrying assembly at intervals in the circumferential direction; coupon specimens, adapted to simulate a water supply pipeline, the coupon specimens are arranged on the installation nodes and are configured to successively pass under the inlet in response to the rotation of the carrying assembly, and be taken out or inserted into the installation nodes through the inlet; a stirring assembly, configured to stir the water in the reaction vessel to simulate the hydraulic conditions of the environment where the water supply pipeline is located, so as to cultivate biofilm on the surface of the coupon specimens.

[0007] In an exemplary embodiment, a carrier plate, which is configured as an annular plate, and a plurality of the above-mentioned installation nodes are spaced apart in the circumferential direction of the annular plate; a plurality of struts, fixedly connected to the lower surface of the carrier plate, and the height of the struts is greater than the length of the coupon specimens in the vertical direction.

[0008] In an exemplary embodiment, an annular chute is formed on the inner bottom wall of the reaction vessel, and a plurality of the struts are slidably engaged with the annular chute so that the carrying assembly rotates relative to the inner bottom wall of the reaction vessel.

[0009] In an exemplary embodiment, the horizontal cross-section of the strut is configured as a spindle shape, and the ends of the spindle-shaped cross-sections of two adjacent struts are arranged facing each other.

[0010] In an exemplary embodiment, the installation node includes a through groove formed on the carrier plate, and the coupon specimens are inserted through the through groove.

[0011] In an exemplary embodiment, the coupon specimens include a head and a tail, and the through groove is configured to allow the tail to pass through while preventing the head from passing through, so that the coupon specimens are hung on the carrying assembly.

[0012] In an exemplary embodiment, the installation node includes a hook arranged on the carrier plate, and the coupon specimens are hung on the hook.

[0013] In an exemplary embodiment, the installation node includes a magnetic attracting part arranged on the carrier plate, and a magnetic conductor is inlaid on the coupon specimens to be combined with the magnetic attracting part so that the coupon specimens are attached to the carrying assembly.

[0014] In an exemplary embodiment, the reaction vessel includes: a cover plate, on which the inlet is formed; a bottom plate, on which the carrying assembly is rotatably arranged; a cylinder body, clamped between the cover plate and the bottom plate; a fastener, including: a bolt, passing through the cover plate and the bottom plate simultaneously in the vertical direction; and a nut, cooperating with the bolt to clamp and fix the cover plate, the bottom plate and the cylinder body.

[0015] In an exemplary embodiment, a drive motor is detachably arranged on the upper surface of the cover plate; a connecting rod, the first end of the connecting rod is connected to the rotating shaft of the drive motor and passes through the cover plate; a stirring paddle, connected to the second end of the connecting rod and configured to rotate under the drive of the drive motor to stir the water in the reaction vessel.

[0016] For the reactor provided by the present invention for simulating the growth of biofilm in a water supply pipeline, a plurality of hanging pieces are sequentially loaded into the carrying assembly through the inlet. Then, water is also injected into the reaction vessel through the inlet. After the water injection is completed, the stirring assembly is started to continuously stir the water in the reaction vessel, so that the water flows to wash the hanging pieces, generating a shear force on the surface of the hanging pieces, simulating the hydraulic conditions in the actual pipeline water supply process. Under this condition, a biofilm grows on the surface of the hanging pieces over time. After the experiment is completed, the carrying assembly is rotated through the inlet to sequentially take out the hanging pieces to view the experimental results. Therefore, the reactor provided by the present invention for simulating the growth of biofilm in a water supply pipeline can directly take in and place the hanging pieces and inject water through the inlet, which is simple and convenient, minimizes the pollution to the inside of the reaction vessel to the greatest extent, and does not require frequent disassembly of the reaction vessel, simplifies the operation process, and is beneficial to maintaining the sealing performance. Description of the Drawings

[0017] Through the following description of the embodiments of the present invention with reference to the drawings, the above and other objects, features and advantages of the present invention will become clearer. In the drawings:

[0018] Figure 1 is a schematic diagram of a reactor provided by the present invention for simulating the growth of biofilm in a water supply pipeline;

[0019] Figure 2 is Figure 1 a partially enlarged view of the three-dimensional structure diagram of the carrying assembly in the shown exemplary embodiment;

[0020] Figure 3 is a three-dimensional structure diagram of the carrying assembly in another embodiment of the present invention;

[0021] Figure 4 is a three-dimensional structure diagram of the hanging piece in the embodiment provided by the present invention.

[0022] In the above drawings, the meanings of the reference numerals are specifically as follows:

[0023] 1. Reaction vessel;

[0024] 11. Cover plate;

[0025] 110. Inlet;

[0026] 12. Bottom plate;

[0027] 13. Cylinder body;

[0028] 14. Fastener;

[0029] 141. Bolt;

[0030] 142. Nut;

[0031] 2. Bearing assembly;

[0032] 20. Through groove;

[0033] 21. Carrier plate;

[0034] 22. Support pillar;

[0035] 3. Hanging piece;

[0036] 31. Head;

[0037] 311. Through hole;

[0038] 32. Tail;

[0039] 4. Stirring assembly;

[0040] 41. Driving motor;

[0041] 42. Connecting rod;

[0042] 43. Stirring paddle;

[0043] 44. Motor mounting plate;

[0044] 45. Support part. Specific embodiments

[0045] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further elaborates on the present utility model in detail with reference to specific embodiments and the accompanying drawings.

[0046] The terms used herein are only for describing specific embodiments and are not intended to limit the present utility model. The terms "including", "comprising", etc. used herein indicate the presence of the described features, steps, operations and / or components, but do not exclude the presence or addition of one or more other features, steps, operations or components.

[0047] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification, and should not be interpreted in an idealized or overly rigid manner.

[0048] In cases where expressions similar to "at least one of A, B, and C, etc." are used, generally, it should be interpreted according to the meaning commonly understood by those of ordinary skill in the art. For example, "a system having at least one of A, B, and C" should include, but not be limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc. In cases where expressions similar to "at least one of A, B, or C, etc." are used, generally, it should be interpreted according to the meaning commonly understood by those of ordinary skill in the art. For example, "a system having at least one of A, B, or C" should include, but not be limited to, a system having only A, only B, only C, having A and B, having A and C, having B and C, and / or having A, B, and C, etc.

[0049] It should also be noted that the directional terms mentioned in the embodiments, such as "up", "down", "front", "back", "left", "right", etc., are only for reference to the drawings and are not used to limit the protection scope of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. When it may cause confusion in the understanding of the present invention, conventional structures or configurations will be omitted.

[0050] Figure 1 is a schematic diagram of a reactor provided by the present invention for simulating the growth of biofilm in a water supply pipeline, Figure 2 is Figure 1 a three-dimensional structural diagram of the carrier assembly in the exemplary embodiment shown.

[0051] An exemplary embodiment of the present invention provides a reactor for simulating the growth of biofilm in a water supply pipeline, as Figure 1 and Figure 2 shown, including a reaction vessel 1, a carrier assembly 2, coupon specimens 3, and a stirring assembly 4. Among them, an inlet 110 is formed at the upper end of the reaction vessel 1, which is suitable for injecting water into the reaction vessel 1. The carrier assembly 2 is rotatably arranged on the inner bottom wall of the reaction vessel 1, and installation nodes are arranged on the carrier assembly 2 at intervals in the circumferential direction. The coupon specimens 3 are suitable for simulating the water supply pipeline, and the coupon specimens 3 are arranged on the installation nodes and are configured to successively pass under the inlet 110 in response to the rotation of the carrier assembly 2, and be taken out or loaded into the installation nodes via the inlet 110. The stirring assembly 4 is configured to agitate the water in the reaction vessel 1 to simulate the hydraulic conditions of the environment where the water supply pipeline is located, so as to cultivate biofilm on the surface of the coupon specimens 3.

[0052] In such an embodiment, the reaction vessel 1 is configured as a cylindrical vessel with an accommodation cavity formed inside. The carrier assembly 2 is placed in the accommodation cavity and can rotate relative to the inner bottom wall of the reaction vessel 1. The hanging piece 3 is arranged at the installation node of the carrier assembly 2 and can rotate synchronously with the carrier assembly 2. The number of the hanging pieces 3 can be one or more. For the convenience of description, multiple hanging pieces 3 will be taken as an example for further description below. Before use, each time a hanging piece 3 is loaded, the carrier assembly 2 is rotated to align the next idle installation node with the inlet 110. Repeating this process, multiple hanging pieces 3 are sequentially loaded into the installation nodes through the inlet 110. Then, water is injected into the accommodation cavity through the inlet 110, and the amount of water is determined according to the pre-established experimental requirements. After the water injection is completed, the stirring assembly 4 is started to continuously stir the water in the accommodation cavity, so that the water flows to wash the hanging piece 3, generating a shear force on the surface of the hanging piece 3, simulating the hydraulic conditions in the actual pipeline water supply process. Under this condition, a biofilm grows on the surface of the hanging piece 3 over time. After the experiment is completed, the carrier assembly 2 is rotated through the inlet 110 to sequentially remove the hanging pieces 3 to check the experimental results. Therefore, the reactor provided in this embodiment for simulating the growth of biofilm in a water supply pipeline can directly take and place the hanging pieces 3 and inject water through the inlet 110, which is simple and convenient, minimizes the pollution to the inside of the reactor, and does not require frequent disassembly of the reaction vessel 1, simplifies the operation process, and is beneficial to maintaining the sealing performance of the reactor.

[0053] Specifically, the material of the hanging piece 3 is selected according to the current mainstream pipe materials to achieve the best simulation effect, including cast iron pipes, copper pipes, polyethylene pipes, galvanized steel pipes, stainless steel pipes, etc.

[0054] In an exemplary embodiment, the carrier assembly 2 includes a carrier plate 21 and a plurality of support columns 22. The carrier plate 21 is configured as an annular plate, and a plurality of installation nodes are distributed at intervals along the circumferential direction of the annular plate. The plurality of support columns 22 are fixedly connected to the lower surface of the carrier plate 21, and the height of the support columns 22 is greater than the length of the hanging piece 3 in the vertical direction.

[0055] In such an embodiment, the carrier plate 21 is an annular plate and is placed in the middle of the inner bottom wall of the reaction vessel 1, that is, the center of the annular plate coincides with the center of the inner bottom wall. The carrier plate 21 takes the center of the annulus as the rotation center of its own rotation, so that a plurality of installation nodes can sequentially pass directly below the inlet 110. The height of the support columns 22 is greater than the length of the hanging piece 3 in the vertical direction to prevent the lower end of the hanging piece 3 from contacting the inner bottom wall of the reaction vessel 1 and affecting the experimental results.

[0056] More specifically, the carrier plate 21 is an annular plate, and the hollow part of the annular plate is used to arrange the stirring assembly 4, and the rotating shaft of the stirring assembly 4 is located at the center of the annular plate.

[0057] Optionally, the distance between the outer side wall of the carrier plate 21 and the inner side wall of the reaction vessel 1 is 5-20 mm, which facilitates the setting of the inlet 110 and avoids being too close to the edge of the reaction vessel 1 or too close to the center of the reaction vessel 1.

[0058] Further, after all the coupons 3 are installed and the water injection is completed, a filter membrane is provided at the open end of the inlet 110 to block impurities such as bacteria in the air. Exemplarily, the pore size of the filter membrane is 0.22 μm.

[0059] According to an embodiment of the present disclosure, an annular chute is formed on the inner bottom wall of the reaction vessel 1, and a plurality of struts 22 are slidably engaged with the annular chute so that the bearing assembly 2 rotates relative to the inner bottom wall of the reaction vessel 1.

[0060] Specifically, the strut 22 is clamped in the annular chute and only rotates with the carrier plate 21 under the guidance of the chute. The annular chute can limit the movement of the strut 22 relative to the inner bottom wall of the reaction vessel 1 in the vertical direction and the horizontal direction.

[0061] Figure 3 It is a three-dimensional structural diagram of the bearing assembly in another embodiment of the present utility model.

[0062] In an embodiment of the present disclosure, the horizontal cross-section of the strut 22 is configured as a spindle shape, and the ends of the spindle-shaped cross-sections of two adjacent struts 22 are arranged facing each other.

[0063] As Figure 3 shown, in such an embodiment, the middle of the spindle shape is wider and the two ends are narrower to form tips. By configuring the cross-section of the strut 22 as a spindle shape and arranging the ends of the spindle-shaped cross-sections of adjacent struts 22 facing each other, a ring formed by the connection of the spindle shapes is formed. In this way, when the stirring assembly 4 agitates the water, the struts 22 with spindle-shaped cross-sections arranged in this way can effectively reduce the resistance and minimize the impact on the experiment.

[0064] It should be noted here that the strut 22 having a spindle-shaped cross-section is only an optional embodiment. In fact, the cross-sectional shape of the strut 22 can also be circular, trapezoidal, rectangular, etc., to meet different requirements or reduce costs.

[0065] Figure 4 It is a three-dimensional structural diagram of the coupon in the embodiment provided by the present utility model.

[0066] In an exemplary embodiment, the mounting node includes a through slot 20 formed in the carrier plate 21, and the coupon 3 is inserted through the through slot 20.

[0067] Further, the coupon 3 includes a head 31 and a tail 32. The through slot 20 is configured to allow the tail 32 to pass through while preventing the head 31 from passing through, so that the coupon 3 is hung on the bearing assembly 2.

[0068] In such an embodiment, when taking and placing the hanging piece 3, the head portion 31 is always kept at the top and the tail portion 32 is kept at the bottom. When the hanging piece 3 is loaded, the tail portion 32 first passes through the through slot 20, and the head portion 31 is restricted by the through slot 20 so that the head portion 31 is placed on the surface of the carrier plate 21. Since the height of the pillar 22 is greater than the length of the hanging piece 3 in the vertical direction, when the head portion 31 of the hanging piece 3 is restricted from passing, the length of the tail portion 32 is also necessarily less than the height of the pillar 22, so that the hanging piece 3 does not contact the inner bottom wall of the reaction container 1, and can also be understood as being suspended on the supporting assembly 2.

[0069] In some other embodiments, the cross-sectional shape of the through slot 20 includes a rectangular, circular, elliptical, etc., so as to limit the passage of the head 31 .

[0070] For example, Figure 4 As shown, the cross section of the through slot 20 is a rectangle, the length of the longer side of the rectangle is greater than the width of the tail 32 and less than the width of the head 31. Optionally, the width a of the head 31 is 14-17 mm, the width b of the tail 32 is 9-12 mm, the length h of the hanging piece 3 along the vertical direction is 60-90 mm, and the thickness c of the hanging piece 3 is 1.5-4.5 mm. There are 12-15 through slots 20, and the rectangular cross section specification of the through slot 20 is 13 mm*(2.5-5) mm.

[0071] In an exemplary embodiment, the mounting node includes a hook disposed on the carrier plate 21, and the hanging piece 3 is hung on the hook.

[0072] In such an embodiment, the hook can be directly set on the side wall of the carrier 21, or it can be set on the upper / lower surface of the carrier 21 and extend beyond the outer contour of the carrier 21 for hanging the hanging piece 3. Such a setting can further reduce the accuracy requirements when taking and placing the hanging piece 3, and the operation is easier.

[0073] In an exemplary embodiment, the mounting node includes a magnetic attraction portion disposed on the carrier plate 21 , and a magnetic conductor is embedded on the hanging piece 3 to combine with the magnetic attraction portion so that the hanging piece 3 is attached to the bearing assembly 2 .

[0074] In such an embodiment, the magnetic attraction portion can be arranged on the inner wall or outer wall of the carrier plate 21, or can be cooperated with the through groove 20 and arranged around the through groove 20. The hanging piece 3 and the supporting component 2 are matched in a magnetic attraction manner, which reduces the difficulty of installation and has higher stability, and reduces the shaking caused by the impact of water flow.

[0075] In an exemplary embodiment, the reaction vessel 1 includes a cover plate 11, a bottom plate 12, a cylinder 13, and a fastener 14. An inlet 110 is formed on the cover plate 11. The carrier assembly 2 is rotatably arranged on the bottom plate 12. The cylinder 13 is clamped between the cover plate 11 and the bottom plate 12. Among them, the fastener 14 includes a bolt 141 and a nut 142. The bolt 141 vertically penetrates through both the cover plate 11 and the bottom plate 12 at the same time. The nut 142 cooperates with the bolt 141 to clamp and fix the cover plate 11, the bottom plate 12, and the cylinder 13.

[0076] In such an embodiment, the cylinder 13 is configured as a hollow cylinder, preferably a cylinder. The cover plate 11 and the bottom plate 12 can be rectangular plates or circular plates. Through the cooperation of the bolt 141 and the nut 142, the reaction vessel 1 is fastened to ensure airtightness and be free from external environmental interference. Multiple groups of fasteners 14 can be provided and arranged at intervals along the periphery of the cover plate 11.

[0077] Exemplarily, the material of the cylinder 13 is also selected according to the materials of common water supply pipes, so as to facilitate simulating the influence of different upstream and downstream pipe materials in the water supply pipe on the growth of biofilm with the coupon 3. The pipe materials include but are not limited to cast iron pipes, galvanized steel pipes, plastic-lined steel pipes, polyvinyl chloride pipes, polyethylene pipes, acrylic pipes, etc. The nominal diameter selection range of the cylinder 13 is DN100 - DN300.

[0078] In some other embodiments, the reaction vessel 1 further includes a top plate 15, which is clamped between the cover plate 11 and the cylinder 13. A through hole is formed in the middle of the top plate 15, and the aperture of the through hole is substantially the same as the inner diameter of the cylinder 13. A ring-shaped groove for embedding the cylinder 13 is formed on the lower surface of the top plate 15, and a ring-shaped groove for embedding the cylinder 13 is also formed on the upper surface of the bottom plate 12. Sealing gaskets are arranged in both ring-shaped grooves to improve the airtightness after installation. Correspondingly, a ring-shaped sealing gasket is also clamped between the cover plate 11 and the top plate 15.

[0079] According to an embodiment of the present disclosure, the stirring assembly 4 includes a driving motor 41, a connecting rod 42, and a stirring paddle 43. The driving motor 41 is detachably arranged on the upper surface of the cover plate 11. The first end of the connecting rod 42 is connected to the rotating shaft of the driving motor 41 and penetrates through the cover plate 11. The stirring paddle 43 is connected to the second end of the connecting rod 42 and is configured to rotate under the drive of the driving motor 41 to stir the water in the reaction vessel 1.

[0080] Exemplarily, the driving motor 41 is a digital display speed-regulating motor, which has a digital display screen and speed-regulating buttons and can adjust the shear force of water on the coupon 3 by changing the rotation speed.

[0081] Furthermore, the stirring assembly 4 further includes a motor mounting plate 44 and a support portion 45. The motor mounting plate 44 is detachably connected to the drive motor 41 by bolts and nuts. The connecting rod 42 passes through the motor mounting plate 44, the support portion 45, and the cover plate 11 at the same time. The support portion 45 is configured as a hollow cylinder and is arranged between the motor mounting plate 44 and the cover plate 11 to improve the stability when the drive motor 41 drives the connecting rod 42 and the stirring paddle 43 to rotate, and extend the service life.

[0082] More specifically, mounting grooves matching the horizontal cross-sectional shape of the support portion 45 are provided on the lower surface of the motor mounting plate 44 and the upper surface of the cover plate 11, so that the support portion 45 can be embedded in the motor mounting plate 44 and the cover plate 11 to further improve the stability.

[0083] In some other embodiments, a through hole 311 is further provided on the head 31 of the hanging piece 3 to facilitate taking out the hanging piece by hooking the through hole with a hook. The diameter d of the through hole 311 is 3-5 mm.

[0084] In some other embodiments, the cover plate 11, the top plate 15, the bottom plate 12, the motor mounting plate 44, and the support portion 45 are all made of acrylic materials. Correspondingly, an adhesive connection is used between the inlet 110 and the cover plate 11, between the cover plate 11 and the support portion 45, between the support portion 45 and the motor mounting plate 44, and between the bottom plate 12 and the cylinder body 13.

[0085] In some other embodiments, an outlet is provided on the side wall of the cylinder body 13 or the lower surface of the bottom plate 12, and the outlet is adhesively connected to the cylinder body 13 or the bottom plate 12. Further, when a non-circulating dynamic flow experiment needs to be carried out, a water pump is also configured and connected to the inlet 110 through a water delivery pipeline for continuously injecting water into the reaction vessel 1.

[0086] In some other embodiments, the connection between the carrier plate 21 and the support column 22 includes, but is not limited to, connection methods such as adhesive connection or detachable connection.

[0087] The embodiments of the present invention have been described above. However, these embodiments are only for illustrative purposes and are not intended to limit the scope of the present invention. Although the embodiments have been described separately above, this does not mean that the measures in each embodiment cannot be used advantageously in combination. The scope of the present invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art can make various substitutions and modifications, and these substitutions and modifications should all fall within the scope of the present invention.

Claims

1. A reactor for simulating biofilm growth in a water supply pipeline, characterized in that: include: A reaction container (1), wherein an inlet (110) is formed at an upper end of the reaction container (1) and is suitable for injecting water into the reaction container (1); A bearing assembly (2) is rotatably arranged on the inner bottom wall of the reaction container (1), and the bearing assembly (2) is provided with mounting nodes spaced apart in a circumferential direction; A hanging piece (3) is suitable for simulating a water supply pipeline, the hanging piece (3) is arranged on the installation node, and is configured to respond to the rotation of the bearing assembly (2), sequentially pass directly below the inlet (110), and take out or load the installation node through the inlet (110); The stirring assembly (4) is configured to stir the water in the reaction container (1) to simulate the hydraulic conditions of the environment in which the water supply pipeline is located, thereby cultivating a biofilm on the surface of the hanging sheet (3).

2. The reactor according to claim 1, characterized in that The bearing assembly (2) comprises: The carrier plate (21) is configured as an annular plate, and the plurality of mounting nodes are distributed at intervals along the circumference of the annular plate; A plurality of pillars (22) are fixedly connected to the lower surface of the carrier plate (21), and the height of the pillars (22) is greater than the length of the hanging piece (3) in the vertical direction.

3. The reactor according to claim 2, characterized in that An annular sliding groove is formed on the inner bottom wall of the reaction container (1), and the plurality of pillars (22) are slidably engaged with the annular sliding groove so that the bearing assembly (2) can rotate relative to the inner bottom wall of the reaction container (1).

4. The reactor according to claim 3, characterized in that The horizontal cross-section of the pillar (22) is configured to be shuttle-shaped, and the ends of the shuttle-shaped cross-sections of two adjacent pillars (22) are arranged facing each other.

5. The reactor according to claim 3, characterized in that The mounting node comprises a through slot (20) formed on the carrier plate (21), and the hanging piece (3) is inserted into the through slot (20).

6. The reactor according to claim 5, characterized in that The hanging piece (3) comprises a head portion (31) and a tail portion (32), and the through slot (20) is configured to allow the tail portion (32) to pass through while preventing the head portion (31) from passing through, so that the hanging piece (3) is hung on the bearing assembly (2).

7. The reactor according to claim 3, characterized in that The installation node comprises a hook arranged on the carrier plate (21), and the hanging piece (3) is hung on the hook.

8. The reactor according to claim 3, characterized in that The mounting node comprises a magnetic attraction portion arranged on the carrier plate (21), and a magnetic conductor is embedded on the hanging piece (3) to combine with the magnetic attraction portion so that the hanging piece (3) is attached to the bearing component (2).

9. The reactor according to any one of claims 1 to 8, characterized in that The reaction container (1) comprises: A cover plate (11), the inlet (110) being formed on the cover plate (11); A bottom plate (12), the bearing assembly (2) being rotatably disposed on the bottom plate (12); A cylinder (13) is sandwiched between the cover plate (11) and the bottom plate (12); The fastener (14) comprises: A bolt (141) vertically penetrates the cover plate (11) and the bottom plate (12) simultaneously; The nut (142) cooperates with the bolt (141) to clamp and fix the cover plate (11), the bottom plate (12) and the cylinder (13).

10. The reactor according to claim 9, characterized in that The stirring assembly (4) comprises: A driving motor (41) detachably arranged on the upper surface of the cover plate (11); a connecting rod (42), wherein a first end of the connecting rod (42) is connected to a rotating shaft of the driving motor (41) and passes through the cover plate (11); A stirring paddle (43) is connected to the second end of the connecting rod (42) and is configured to rotate under the drive of the driving motor (41) to stir the water in the reaction container (1).

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