Medical wastewater treatment device

Abstract

The medical wastewater treatment device provided by the invention comprises a tank body, a liquid inlet is formed in the tank body, and a liquid outlet is formed in the lower part of the tank body; a rotating shaft is rotatably mounted at the coaxial position in the tank body, and the upper end of the rotating shaft is arranged outside the tank body and is connected with a rotating driving mechanism; a spraying mechanism and a plurality of carbon brush type wall cleaning mechanisms are sequentially fixed to the rotating shaft from top to bottom, a plurality of filter plates are further arranged in the tank body, the filter plates and the carbon brush type wall cleaning mechanisms are arranged in a crossed mode, the spraying mechanism is externally connected with disinfectant through a pipeline, and the carbon brush type wall cleaning mechanisms are externally connected with a high-pressure air source through a pipeline. The invention aims to provide a multi-stage filtration treatment device for wastewater, which can perform multi-stage filtration treatment on the wastewater, and meanwhile, can fully mix the wastewater and chemicals in a manner of rotary spraying of the chemicals and multi-stage stirring and mixing, so that the disinfection effect is improved. In addition, the carbon brush type wall cleaning mechanism also cleans residual substances on the tank wall to prevent the residual substances from remaining for a long time, and all the mechanisms work cooperatively and cooperate with one another to affect the final disinfection effect.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a medical wastewater treatment device. Background Art

[0002] The treatment process of medical wastewater is relatively complicated and requires a complete set of processes and equipment. In the treatment process, medical wastewater usually goes through multiple links such as screen wells, septic tanks, regulating tanks, anaerobic tanks, aerobic tanks, MBR membrane tanks, and disinfection discharge tanks. In these treatment processes, it is necessary to add agents to the disinfection discharge tank for disinfection. During the disinfection process, the agent is directly added to the disinfection tank. The disinfection tank is mostly stirred by a stirring shaft to mix the agent and wastewater. After the disinfection tank is used for a long time, a variety of substances may remain on the inner wall of the disinfection tank and their impact on the subsequent disinfection effect mainly includes the following categories: Residues of chemicals: During the disinfection process, commonly used chemicals such as chlorine, ozone, and ultraviolet disinfectants may form residues on the inner wall of the tank. The residues of these chemicals may affect the subsequent disinfection effect, and may even react with the chemicals added later, consuming the chemicals and reducing the disinfection effect. Dirt and sediment: Solid particles, microorganisms, grease and other substances that may be contained in medical wastewater may be deposited on the inner wall of the tank, forming dirt. These sediments not only take up space, but may also become a breeding ground for microorganisms, causing secondary pollution.

[0003] Microbial biofilm: During long-term wastewater treatment, biofilms may form on the inner wall of the tank, containing various bacteria and other microorganisms. These biofilms may affect the penetration of disinfectants, thereby reducing the disinfection effect and may lead to the survival of certain pathogens.

[0004] Chemical reaction products: During the disinfection process, the agent may react chemically with other components in the wastewater to form new compounds and precipitates, which may adhere to the inner wall of the tank and affect subsequent treatment.

[0005] Therefore, we propose a medical wastewater treatment device to solve the above technical problems. Summary of the invention

[0006] In order to solve the technical problems existing in the above-mentioned prior art, the present invention proposes a medical wastewater treatment device.

[0007] The technical solution adopted by the present invention is as follows: A medical wastewater treatment device comprises a tank body, wherein the tank body is provided with a liquid inlet and the lower part is provided with a liquid discharge port; a rotating shaft is rotatably installed at a coaxial position inside the tank body, the upper end of the rotating shaft is placed outside the tank body and is connected to a rotating drive mechanism, and the lower end of the rotating shaft is placed at the bottom of the tank body and is fixedly installed on the inner wall of the tank body; a spray mechanism and a plurality of carbon brush type wall cleaning mechanisms are fixed to the rotating shaft in sequence from top to bottom, a plurality of filter plates are also provided inside the tank body, the filter plates and the carbon brush type wall cleaning mechanisms are cross-arranged, the spray mechanism is externally connected to a disinfectant through a pipeline, and the carbon brush type wall cleaning mechanism is externally connected to a high-pressure gas source through a pipeline.

[0008] Preferably, the outer side of the liquid inlet is connected to a liquid inlet pipe, and the inner side is also provided with a filter screen.

[0009] Preferably, a buffer plate fixed inside the tank body is also provided inside the tank body.

[0010] Preferably, the bracket at the bottom of the tank body for mounting the bottom end of the rotating shaft is a conical structure, the bottom end of the conical bracket is fixedly connected to the inner wall of the tank body, and the top end is rotatably connected to the rotating shaft through a bearing.

[0011] Preferably, the apertures on the plurality of filter plates in the tank body decrease sequentially.

[0012] Preferably, a triangular bracket is fixedly provided on the outer side of the side wall of the tank body, the top of the triangular bracket is a motor support plate, the rotary drive mechanism is arranged on the motor support plate, the rotary drive mechanism includes a motor, a first pulley, a belt and a second pulley, the upper end of the rotating shaft is sleeved with a first pulley placed on the upper end of the tank body, the first pulley is connected to the second pulley via a belt, the second pulley is connected to the output end of the motor, and the lower end of the motor is mounted on the motor support plate by a fixing tool.

[0013] Preferably, the carbon brush type wall cleaning mechanism includes a stirring arm and a wall scraping assembly at the end of the stirring arm. The stirring arm is hollow inside and connected to the inside of the rotating shaft. The wall scraping assembly is movably connected to the end of the stirring arm through a spring. A brush head is provided at the end in contact with the tank wall, and a high-pressure jet head is also provided at the brush head on the wall scraping assembly.

[0014] Furthermore, the wall scraping assembly includes a base and bristles. The interior of the base is hollow and connected to the interior of the stirring arm. The bristles are arranged on the contact surface between the base and the tank wall, and a high-pressure jet head is arranged on the contact surface. The other side of the base away from the bristles is provided with a concave-shaped connecting seat, and the connecting seat is a circular ring column. The end of the stirring arm is inserted into the circular ring column, and an abutment seat is provided on the stirring arm. A spring is provided between the abutment seat and the connecting seat, and the spring is sleeved on the stirring arm.

[0015] Preferably, the rotating shaft is a hollow tube body, and an air inlet and a liquid injection port are provided on the top of the tube body; the air inlet is connected to the stirring arm, and the liquid injection port is connected to the spray mechanism.

[0016] Furthermore, a liquid storage tank and a pump body are provided on the top of the tank body, and the liquid storage tank contains pre-prepared disinfectant. The liquid injection port at the end of the rotating shaft is connected to the pump body and the liquid storage tank in sequence through a pipeline; a gas compressor is also provided on the top of the tank body, and the air inlet at the end of the rotating shaft is connected to the gas compressor in sequence through a pipeline.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In general, compared with the prior art, the medical wastewater treatment device provided by the present invention, the wastewater enters the tank body from the liquid inlet, the rotary drive mechanism drives the rotating shaft to rotate, the spray mechanism rotates with the rotating shaft, the liquid medicine in the spray mechanism is sprinkled in the form of mist, and at the same time, the rotation movement is performed to achieve the effect of uniformly distributing the medicine; the filter plate and the carbon brush type wall cleaning mechanism are arranged crosswise, the wastewater is filtered for multiple times in turn, and the large particles of impurities are cleaned, and at the same time, the carbon brush type wall cleaning mechanism rotates with the rotating shaft, on the one hand, the mixture of wastewater and medicine can be stirred to speed up the speed of full mixing, and on the other hand, the residual materials on the tank wall can be cleaned to prevent affecting the disinfection effect; the wastewater after the disinfection treatment is completed is discharged through the drain port. Through the above process, the wastewater can be subjected to multi-stage filtration treatment, and the liquid medicine is rotated and sprayed, and the multi-stage stirring and mixing is used to make the wastewater and the medicine more fully mixed, thereby increasing the disinfection effect; and at the same time, the residual materials on the tank wall are also cleaned to prevent them from remaining for a long time and affecting the final disinfection effect. The various mechanisms in the device work together, and the functions cooperate with each other, which improves the device effect as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will now be described by way of example with reference to the accompanying drawings, in which: Figure 1 It is a structural schematic diagram of a medical wastewater treatment device in one embodiment of the present invention; Figure 2 It is a structural schematic diagram of a carbon brush type wall cleaning mechanism in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a filter plate in one embodiment of the present invention; Figure 4 It is a schematic diagram of the front view structure of the rotating shaft in one embodiment of the present invention; Figure 5 Schematic diagram of a top view of the rotating shaft in one embodiment of the present invention. DETAILED DESCRIPTION

[0019] 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.

[0020] Embodiment 1: The present invention is a medical wastewater treatment device, which is mainly used to improve the treatment of adding agents to the disinfection tank body 1 in the treatment of medical wastewater. If the residual substances on the inner wall of the tank body 1 are not cleaned for a long time, a variety of substances may remain on the inner wall of the disinfection tank and affect the subsequent disinfection effect, which eventually affects the disinfection effect of the disinfection tank. Figure 1 , and the present invention mainly includes: a tank body 1, which is cylindrical as a whole, with a cavity inside, a detachable cover body 2 at the upper end, and fixed legs 3 at the bottom side; a liquid inlet is arranged at the upper part of the tank body 1, and a liquid discharge port is arranged at the lower part; a rotating shaft 6 is rotatably installed at a coaxial position inside the tank body 1, the upper end of the rotating shaft 6 is placed outside the tank body 1, and is connected to a rotating drive mechanism 7, the lower end of the rotating shaft 6 is placed at the bottom of the tank body 1, and is fixedly installed on the inner wall of the tank body 1 through a bracket 12; a spray mechanism 8 and a plurality of carbon brush type wall cleaning mechanisms 9 are fixed on the rotating shaft 6 from top to bottom, and a plurality of filter plates 14 are also arranged inside the tank body 1, the filter plates 14 are detachably fixed on the inner wall of the tank body 1, the filter plates 14 and the carbon brush type wall cleaning mechanisms 9 are cross-arranged, the spray mechanism 8 is externally connected to a disinfectant through a pipeline, and the carbon brush type wall cleaning mechanism 9 is externally connected to a high-pressure gas source through a pipeline.

[0021] In the working process of the above embodiment, wastewater enters the tank body 1 from the liquid inlet, the rotary drive mechanism 7 drives the rotating shaft 6 to rotate, the spray mechanism 8 rotates with the rotating shaft 6, and the liquid medicine in the spray mechanism 8 is sprinkled in the form of mist, and at the same time, the rotation movement is performed to achieve the effect of uniform spraying of medicine; the filter plate 14 and the carbon brush type wall cleaning mechanism 9 are arranged crosswise, and the wastewater is filtered for multiple times in sequence to clean up large particles of impurities, and at the same time, the carbon brush type wall cleaning mechanism 9 rotates with the rotating shaft 6, on the one hand, the mixture of wastewater and medicine can be stirred to speed up the speed of full mixing, and on the other hand, the residual materials on the tank wall can be cleaned to prevent affecting the disinfection effect; the wastewater after disinfection is discharged through the drain port. Through the above process, the wastewater can be subjected to multi-stage filtration treatment, and the liquid medicine is rotated and sprayed, and the multi-stage stirring and mixing is used to make the wastewater and the medicine mix more fully, thereby increasing the disinfection effect; and at the same time, the residual materials on the tank wall are also cleaned to prevent them from remaining for a long time and affecting the final disinfection effect. The various mechanisms in the device work together, and the functions cooperate with each other, which improves the overall effect of the device.

[0022] In a preferred embodiment, see Figure 3 The liquid inlet is arranged at the upper part of the side wall of the tank body 1, and a liquid inlet pipe 4 is connected to the outside of the liquid inlet, and a filter screen 10 is also arranged on the inside to filter the corresponding impurities. A buffer plate 11 fixed in the tank body 1 is also arranged inside the tank body 1. The buffer plate 11 is used to buffer the impact of the wastewater when the liquid inlet pipe 4 enters, so that the impact of the wastewater entering the tank body 1 is reduced, which makes the impact of the incoming wastewater on the filter plate 14 relatively small, avoiding affecting the filtering effect.

[0023] In a preferred embodiment, the bottom of the tank body 1 is a conical structure, and the bracket 12 for mounting the bottom end of the rotating shaft 6 is also a conical structure. The bottom end of the conical bracket 12 is fixedly connected to the inner wall of the tank body 1, and the top end is rotatably connected to the rotating shaft 6 through a bearing. The bracket 12 serves the purpose of fixing the rotating shaft 6 without affecting the rotational movement of the rotating shaft 6 itself.

[0024] In a preferred embodiment, the drain port is arranged at the conical structure at the bottom of the tank body 1, and the drain port is externally connected to a drain pipe 5, and a corresponding valve 13 is arranged on the drain pipe 5. It can be understood that the valve 13 includes but is not limited to ball valves, gate valves, stop valves and butterfly valves, so as to control the flow and discharge of the liquid.

[0025] In a preferred embodiment, the apertures of the plurality of filter plates 14 in the tank body 1 decrease in sequence to achieve a step-by-step filtering effect. In this way, larger solid particles will be intercepted by the first layer of filter plates 14, while smaller particles can pass through subsequent filter plates 14 with smaller apertures, thereby improving the filtering effect. At the same time, this design can also effectively prevent the filter plates 14 from being blocked, thereby extending the service life of the equipment.

[0026] In a preferred embodiment, the circumference of the filter plate 14 is detachably connected to the tube wall via a snap-fit ​​block, and a through hole for the rotating shaft 6 to pass through is provided in the middle of the filter plate 14 , and the diameter of the through hole is adapted to the diameter of the rotating shaft 6 .

[0027] Embodiment 2: Based on the above embodiment 1, refer to Figure 1 This embodiment further provides a connection method of the upper end rotation drive mechanism 7 of the rotating shaft 6 and a specific structure of the rotation drive mechanism 7.

[0028] A triangular bracket 15 is fixedly arranged on the outer side of the side wall of the tank body 1, and the top of the triangular bracket 15 is a support plate for the motor 701, and the rotation drive mechanism 7 is arranged on the support plate for the motor 701. The rotation drive mechanism 7 includes but is not limited to the motor 701, a transmission (not shown), a direction-changing wheel (not shown), a pulley 1 702, a belt 703, and a pulley 2 704. The upper end of the rotating shaft 6 is sleeved with a pulley 1 702 arranged on the upper end of the tank body 1, and the pulley 1 702 is connected to the pulley 2 704 via a belt 703, and the pulley 2 704 is coaxially connected to the transmission via the direction-changing wheel, etc. The transmission is coaxially connected to the motor 701, and the lower end of the motor 701 is mounted on the support plate for the motor 701 through a fixed fixture. Through the above, the output shaft of the motor 701 can drive the rotating shaft 6 to rotate through the belt 703.

[0029] Embodiment 3: Based on the above embodiments 1 and 2, refer to Figure 2 , Figure 4 and Figure 5 This embodiment further provides the specific structure of the rotating shaft 6 and the carbon brush type wall cleaning mechanism 9: The carbon brush type wall cleaning mechanism 9 includes a stirring arm 901 and a wall scraping assembly at the end of the stirring arm 901. The stirring arm 901 is hollow inside and connected to the inside of the rotating body. The wall scraping assembly is movably connected to the end of the stirring arm 901 through a spring 902. Under the action of the spring 902, it is always close to the tank wall. A brush head 903 is provided at the end in contact with the tank wall. A high-pressure jet head (not shown) is also provided at the brush head 903 on the wall scraping assembly. Through the above, the carbon brush type wall cleaning mechanism 9 rotates around the axial direction of the tank body 1 under the drive of the rotating shaft 6, wherein the stirring arm 901 can play the role of stirring the waste liquid. In addition, the wall scraping assembly at the end of the stirring arm 901 can scrape the residual substances on the tank wall, and cooperate with the high-pressure gas to make its cleaning effect better.

[0030] In a preferred embodiment, the wall scraping assembly includes a base 904 and bristles. The interior of the base 904 is hollow and connected to the interior of the stirring arm 901. The bristles are arranged on the contact surface between the base 904 and the tank wall. A high-pressure jet head is arranged on the contact surface, so that the high-pressure gas is transmitted to the interior of the base 904 through the rotating shaft 6 and the stirring arm 901, and is output through the high-pressure jet head to perform high-pressure flushing on the residue on the tank wall; the other side of the base 904 away from the bristles is provided with a concave-shaped connecting seat 905, and the connecting seat 905 is a circular column. The end of the stirring arm 901 is inserted in the circular column, and the stirring arm 901 is provided with an abutment seat 906, and a spring 902 is arranged between the abutment seat 906 and the connecting seat 905. The spring 902 is sleeved on the stirring arm 901, so that the bristles on the base 904 can always be in close contact with the inner wall of the tank under the action of the spring 902, thereby ensuring the physical scraping effect of the bristles on the residual substances on the tank wall. The above structure can realize the cleaning of residual materials on the inner wall of the tank by the coordinated use of high-pressure air pressure and brush friction, thereby achieving a better cleaning effect.

[0031] It can be understood that in order to ensure the airtightness inside the stirring arm 901, an air-sealing element (not shown in the figure) is provided at the movable connection between the stirring arm 901 and the base 904. The air-sealing element can adopt existing technology, including but not limited to various types such as air-sealing rings, O-rings, and lip-shaped sealing rings, so as to effectively prevent gas leakage and maintain an airtight environment inside the stirring arm 901.

[0032] In a preferred embodiment, the rotating shaft 6 is a hollow tube, and an air inlet 601 and a liquid injection port 602 are provided on the top of the tube; the air inlet 601 is connected to the stirring arm 901, and the liquid injection port 602 is connected to the spray mechanism 8 on the stirring shaft.

[0033] Embodiment 4: The spray mechanism 8 is connected to the disinfectant through a pipeline, and the carbon brush type wall cleaning mechanism 9 is connected to the high pressure gas source through a pipeline. Figure 1 This embodiment further provides an implementation method of the disinfectant and the high-pressure gas source connected to the end of the rotating shaft 6.

[0034] The top of the tank body 1 is provided with a liquid storage tank 17 and a pump body 16. The liquid storage tank 17 contains pre-prepared disinfectant. The liquid injection port 602 at the end of the rotating shaft 6 is connected to the pump body 16 and the liquid storage tank 17 in sequence through a pipeline. The disinfectant is transported to the inside of the rotating shaft 6 under the action of the pump body 16, and finally to the spray mechanism 8. A gas compressor 18 is also provided on the top of the tank body 1. The air inlet 601 at the end of the rotating shaft 6 is connected to the gas compressor 18 in sequence through a pipeline. High-pressure gas is output from the gas compressor 18, enters the inside of the rotating shaft 6 through the pipeline, and finally outputs to the tank wall through the wall scraping assembly.

[0035] The present invention only improves the structural equipment. The electronic control part can be controlled manually or automatically. For example, a controller, a time relay, etc. can be added to automatically control the drive motor 701, the gas supply equipment, the medicine supply equipment, the solenoid valve, etc.

[0036] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A medical wastewater treatment device, comprising a tank body (1), characterized in that: The tank body (1) is provided with a liquid inlet at the top and a liquid discharge port at the bottom; a rotating shaft (6) is rotatably mounted coaxially inside the tank body (1); the upper end of the rotating shaft (6) is disposed outside the tank body (1) and is connected to a rotating drive mechanism (7); the lower end of the rotating shaft (6) is disposed at the bottom of the tank body (1) and is fixedly mounted on the inner wall of the tank body (1); a spray mechanism (8) and a plurality of carbon brush type wall cleaning mechanisms (9) are fixed to the rotating shaft (6) in sequence from top to bottom; a plurality of filter plates (14) are also disposed inside the tank body (1); the filter plates (14) and the carbon brush type wall cleaning mechanisms (9) are cross-arranged; the spray mechanism (8) is externally connected to a disinfectant via a pipeline; and the carbon brush type wall cleaning mechanism (9) is externally connected to a high-pressure gas source via a pipeline.

2. A medical wastewater treatment device according to claim 1, characterized in that: The outer side of the liquid inlet is connected to a liquid inlet pipe (4), and the inner side is also provided with a filter screen (10).

3. A medical wastewater treatment device according to claim 1, characterized in that: A buffer plate (11) fixed inside the tank body (1) is also provided inside the tank body (1).

4. A medical wastewater treatment device according to claim 1, characterized in that: The support (12) at the bottom of the tank body (1) for mounting the bottom end of the rotating shaft (6) is a conical structure; the bottom end of the conical support (12) is fixedly connected to the inner wall of the tank body (1), and the top end is rotatably connected to the rotating shaft (6) via a bearing.

5. A medical wastewater treatment device according to claim 4, characterized in that: The apertures of the plurality of filter plates (14) in the tank body (1) decrease in sequence.

6. A medical wastewater treatment device according to claim 1, characterized in that: A triangular bracket (15) is fixedly provided on the outer side of the side wall of the tank body (1), the top of the triangular bracket (15) is a motor (701) support plate, the rotary drive mechanism (7) is arranged on the motor (701) support plate, the rotary drive mechanism (7) comprises a motor (701), a first pulley (702), a belt (703) and a second pulley (704), the upper end of the rotating shaft (6) is sleeved with a first pulley (702) disposed on the upper end of the tank body (1), the first pulley (702) is connected to the second pulley (704) via the belt (703), the second pulley (704) is connected to the output end of the motor (701), and the lower end of the motor (701) is mounted on the motor (701) support plate through a fixing fixture.

7. A medical wastewater treatment device according to claim 1, characterized in that: The carbon brush type wall cleaning mechanism (9) comprises a stirring arm (901) and a wall scraping assembly at the end of the stirring arm (901); the stirring arm (901) is hollow inside and communicates with the inside of the rotating shaft (6); the wall scraping assembly is movably connected to the end of the stirring arm (901) via a spring (902); a brush head (903) is provided at the end of the wall scraping assembly that contacts the tank wall; and a high-pressure jet nozzle is also provided on the wall scraping assembly.

8. A medical wastewater treatment device according to claim 7, characterized in that: The wall scraping assembly comprises a base (904) and bristles. The base (904) is hollow inside and communicates with the inside of the stirring arm (901). The bristles are arranged on the contact surface between the base (904) and the tank wall, and a high-pressure jet nozzle is arranged on the contact surface. A connecting seat (905) is arranged on the other side of the base (904) away from the bristles. The connecting seat (905) is a circular column. The end of the stirring arm (901) is inserted into the circular column. An abutting seat (906) is arranged on the stirring arm (901). A spring (902) is arranged between the abutting seat (906) and the connecting seat (905). The spring (902) is sleeved on the stirring arm (901).

9. A medical wastewater treatment device according to claim 1, characterized in that: The rotating shaft (6) is a hollow tube, and an air inlet (601) and a liquid injection port (602) are provided at the top of the tube; the air inlet (601) is connected to the stirring arm (901), and the liquid injection port (602) is connected to the spray mechanism (8).

10. A medical wastewater treatment device according to claim 9, characterized in that: A liquid storage tank (17) and a pump body (16) are arranged on the top of the tank body (1), the liquid storage tank (17) contains disinfectant, and the liquid injection port (602) at the end of the rotating shaft (6) is connected to the pump body (16) and the liquid storage tank (17) in sequence through a pipeline; a gas compressor (18) is also arranged on the top of the tank body (1), and the air inlet (601) at the end of the rotating shaft (6) is connected to the gas compressor (18) in sequence through a pipeline.

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