Medical sewage pretreatment device

Abstract

The utility model discloses a medical sewage pretreatment device which comprises a treatment box, a box cover covers the top end of the treatment box, a sewage inlet is formed in the box cover, a filter screen is arranged in the treatment box, and a supporting table convenient for placing the filter screen is fixedly arranged on the inner wall of the treatment box in the circumferential direction; the filter screen is obliquely arranged, a sewage draining exit is formed in the treatment box at the lower end of the filter screen, and a collecting tank is fixedly arranged on the outer wall of the treatment box at one side of the sewage draining exit. The box cover is arranged at the top end of the treatment box, and the filter screen placed on the supporting table can be taken out by opening the box cover, so that the filter screen is convenient to clean and replace; by means of the obliquely-arranged filter screen, a part of impurities filtered on the filter screen slide into the drain outlet and are accumulated in the collecting tank, the filter screen can be automatically cleaned, the application environment and the overall performance of the device are greatly improved, and the device is practical, simple, safe, reliable, long in service life and easy to popularize.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment equipment technology, and more specifically, to a medical wastewater pretreatment device. Background Technology

[0002] Wastewater treatment is the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering, and is increasingly becoming part of everyday life. Classified by wastewater source, wastewater treatment is generally divided into industrial wastewater treatment and domestic wastewater treatment. Industrial wastewater includes industrial wastewater, agricultural wastewater, and medical wastewater, while domestic wastewater is wastewater generated in daily life, referring to a complex mixture of various forms of inorganic and organic matter. The pollution characteristics of medical wastewater are similar to those of domestic wastewater, with three main pollutants: suspended solids (SS), organic pollutants CODcr and BOD5, and inorganic nutrients N and P. Direct discharge without purification will cause significant environmental pollution. Therefore, wastewater treatment is necessary before medical wastewater can be treated. Wastewater treatment facilities are pre-treatment facilities set up before wastewater enters traditional sedimentation and biological treatment processes, based on the water quality requirements of subsequent treatment processes; they are the critical stage of a wastewater treatment plant.

[0003] Currently, medical wastewater treatment systems lack debris interception structures. Since wastewater contains not only suspended silt and dust, but also medical supplies such as gauze or cotton gauze floating on its surface, failure to intercept these items can lead to blockage of the outlet during wastewater discharge. Furthermore, the aforementioned medical wastewater treatment designs lack sediment discharge structures, requiring personnel to periodically enter the tank to clean the bottom silt. Given the high level of pathogens within the wastewater treatment tank, this poses a health risk to cleaning personnel. Existing patent publication number CN217961624U describes a medical wastewater pretreatment device, comprising: a pretreatment tank with a treatment chamber inside; an inlet pipe at the top of the pretreatment tank; an outlet pipe with a check valve on one side of the pretreatment tank; a dosing tank at the top of one side of the pretreatment tank; and a dosing pipe on one side of the dosing tank. This invention solves the problem that existing medical wastewater pretreatment devices are mostly unable to remove impurities, causing impurities to easily clog the outlet along with the wastewater flow. It achieves the effect of blocking and discharging impurities in a concentrated manner. At the same time, it solves the problem that existing medical wastewater pretreatment devices are mostly inconvenient to handle bottom impurities, causing personnel to enter the tank and easily become infected with bacteria. It achieves the effect of cleaning the internal sludge without manual entry.

[0004] Although the above-described technical solution can filter sewage, the device is enclosed, and after a long period of time, dirt in the sewage will remain on the filter screen, making it inconvenient to clean and replace the filter screen. Therefore, improvements are needed to solve this problem. Utility Model Content

[0005] The purpose of this invention is to provide a medical wastewater pretreatment device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a medical wastewater pretreatment device, comprising a treatment tank, wherein the top of the treatment tank is covered with a tank cover, the tank cover is provided with a wastewater inlet, a filter screen is provided inside the treatment tank, and a support platform for placing the filter screen is fixedly provided circumferentially on the inner wall of the treatment tank.

[0007] The filter screen is tilted, and a drain outlet is provided on the processing box at the lower end of the filter screen. A collection trough is fixedly provided on the outer wall of the processing box on one side of the drain outlet.

[0008] Preferably, a dosing port is fixedly provided on the outer wall of the treatment box below the filter.

[0009] Preferably, the treatment box is provided with an inner box, the side wall of the inner box is provided with multiple water outlet holes, and a fixing plate is provided between the inner box and the treatment box.

[0010] Preferably, a motor is provided at the bottom of the processing box, and a rotating shaft is provided in the inner box for longitudinal rotation. The top end of the rotating shaft passes through the inner box wall and the processing box wall and is connected to the output end of the motor. Multiple stirring blades are provided on the rotating shaft.

[0011] Preferably, a water outlet pipe is fixedly provided at the bottom of one side of the treatment tank, and a support leg is provided at the bottom of the treatment tank.

[0012] Beneficial effects: Compared with the prior art, the beneficial effects of this utility model are: by opening the cover set at the top of the processing box, the filter screen placed on the support platform can be taken out, which is convenient for cleaning and replacing the filter screen; by using the inclined filter screen, some of the debris filtered on the filter screen slides into the drain outlet and accumulates in the collection tank, which can automatically clean the filter screen. This utility model greatly improves the applicable environment and overall performance of the device. It is practical, simple, safe and reliable, has a long service life, and is easy to promote. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a medical wastewater pretreatment device proposed in this utility model.

[0014] In the attached diagram: 1-mixing tank, 2-feeding mechanism, 21-feeding hopper, 22-connecting pipe, 23-second valve, 24-label box, 25-feeding main pipe, 3-motor, 4-rotating shaft, 5-stirring blade, 6-scraper mechanism, 61-connecting plate, 62-spring, 63-mounting plate, 64-scraper, 7-support leg, 8-discharge pipe, 9-first valve. Detailed Implementation

[0015] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0016] Example

[0017] Please refer to the accompanying drawings. In this embodiment of the invention, a medical wastewater pretreatment device includes a treatment tank 1. The top of the treatment tank 1 is covered with a lid 2, and the lid 2 has a wastewater inlet 16. A filter screen 3 is installed inside the treatment tank 1. A support platform 4 is fixedly provided circumferentially on the inner wall of the treatment tank 1 to facilitate the placement of the filter screen 3. The filter screen 3 is inclined, and a wastewater outlet 5 is provided on the lower end of the treatment tank 1. A collection trough 6 is fixedly provided on the outer wall of the treatment tank 1 on one side of the wastewater outlet 5. A chemical dosing port 7 is fixedly provided on the outer wall of the treatment tank 1 below the filter screen 3. An inner tank 8 is provided inside the treatment tank 1, and multiple water outlets 9 are provided on the side walls of the inner tank 8. A fixing plate 10 is provided between the inner box 8 and the processing box 1; a motor 11 is provided at the bottom of the processing box 1, and a rotating shaft 12 is provided longitudinally inside the inner box 8. The top end of the rotating shaft 12 passes through the wall of the inner box 8 and the wall of the processing box 1 and is connected to the output end of the motor 11. Multiple stirring blades 13 are provided on the rotating shaft 12. During stirring, the rotation speed and pressure of the liquid inside and outside the inner box 8 are inconsistent, thereby drawing the sewage outside the inner box 8 into the interior of the inner box 8 through the water outlet 9 for stirring, preventing the sewage from stratifying inside the processing box 1, thus making the sewage and medicine mix more evenly and the reaction more thorough; a water outlet pipe 14 is fixedly provided at the bottom of one side of the processing box 1, and a support leg 15 is provided at the bottom of the processing box 1.

[0018] This invention features a cover at the top of the processing box, allowing easy removal of the filter screen placed on the support platform by opening the cover, facilitating filter screen cleaning and replacement. The angled filter screen allows some of the filtered debris to slide into the drain outlet and accumulate in the collection tank, enabling automatic filter screen cleaning. This invention significantly improves the applicability and overall performance of the device, is practical, simple, safe, reliable, has a long service life, and is easy to promote.

[0019] The specific structure and communication principles are existing mature technologies, and will not be elaborated here.

[0020] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0021] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A medical wastewater pretreatment device comprising a treatment tank, characterized by: The top cover of the treatment box is combined with a box cover, the box cover is provided with a sewage inlet, the treatment box is provided with a filter screen, and a support table for placing the filter screen is fixedly arranged on the inner wall of the treatment box; The filter screen is arranged obliquely, the treatment box at the lower end of the filter screen is provided with a sewage outlet, and a collecting groove is fixedly arranged on the outer wall of the treatment box on one side of the sewage outlet.

2. The medical wastewater pretreatment device according to claim 1, characterized in that: A dosing port is fixedly arranged on the outer wall of the treatment box below the filter screen.

3. A medical wastewater pretreatment device according to claim 2, characterized in that: The treatment box is provided with an inner box, the side wall of the inner box is provided with a plurality of water outlets, and a fixing plate is arranged between the inner box and the treatment box.

4. The medical wastewater pretreatment device of claim 3, wherein: The bottom end of the treatment box is provided with a motor, a rotating shaft is longitudinally arranged in the inner box, the top end of the rotating shaft penetrates through the wall of the inner box and the wall of the treatment box and is connected with the output end of the motor, and a plurality of stirring blades are arranged on the rotating shaft.

5. A medical wastewater pretreatment device according to claim 4, characterized in that: A water outlet pipe is fixedly arranged at the bottom end of one side of the treatment box, and the bottom end of the treatment box is provided with a supporting leg.

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