Sewage treatment equipment

Abstract

The invention relates to the technical field of sewage treatment, and particularly discloses sewage treatment equipment. The system comprises a sewage pool, a reaction pool, a pressurization pool, a clean water pool and a water return pool communicated with the clean water pool which are sequentially arranged along the flowing direction of sewage, a liquid inlet is formed in one side of the bottom of the sewage pool; a sewage draining exit is formed in the bottom of the sewage pool, and the sewage draining exit is communicated with the water return pool; a liquid outlet is formed in the top of the sewage tank and is communicated with the reaction tank; a coarse filter screen is arranged at the liquid outlet end of the liquid inlet, and the top end of the coarse filter screen is rotationally mounted in the sewage tank; large-particle impurities can be filtered through the coarse filter screen, the coarse filter screen is automatically cleaned, and the coarse filter screen is prevented from being blocked.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to sewage treatment equipment. Background Art

[0002] Medical wastewater treatment equipment is a kind of equipment specially designed for wastewater treatment in medical facilities. It integrates a variety of advanced treatment units, including solid-liquid separation, disinfection, biodegradation, etc. It has the remarkable characteristics of exquisite structure, small footprint, and high degree of intelligence. It is an efficient and environmentally friendly treatment equipment. It can treat wastewater on-site in medical facilities and discharge it on-site after meeting the standards, which greatly reduces the laying cost and potential risks of wastewater transportation pipelines. Compared with the traditional simple medical wastewater treatment method, this equipment shows the advantages of greatly improved treatment efficiency, stable and reliable effluent water quality, convenient and efficient operation and maintenance, etc., which effectively guarantees the safety and compliance of medical wastewater treatment, and provides solid support for the health and stability of the medical environment and surrounding ecology.

[0003] The utility model with application number 201621247899.8 discloses an improved coal mine wastewater treatment device, including an inlet pipe, a multi-media filter, a dosing box, a safety filter, a reverse osmosis device and an outlet pipe which are sealed and connected in sequence; the multi-media filter is provided with a tank body, and the top of the tank body is provided with a water inlet and an exhaust port respectively; the lower part of the tank body is provided with a screen, and at least two layers of filter media are provided above the screen; the bottom of the tank body is provided with a water outlet; the inlet pipe is connected to the water inlet of the multi-media filter, and a water pump is provided between the inlet pipe and the water inlet; a pH value detector is provided on the water outlet; the multi-media filter is also directly connected to the safety filter; a valve a is provided between the multi-media filter and the dosing box, and a valve b is provided between the multi-media filter and the safety filter. The utility model has a simple structure, greatly improves the water treatment capacity, and improves the efficiency of graded treatment of mine wastewater with different pH values.

[0004] However, this patent requires personnel to manually clean the sediment, which increases the burden on the staff.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0006] The purpose of the present invention is to provide a sewage treatment device which can effectively solve the above technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical scheme is adopted:

[0008] A sewage treatment device, comprising: a sewage tank, a reaction tank, a pressure tank, a clean water tank, and a return water tank connected to the clean water tank, which are sequentially arranged along the flow direction of sewage;

[0009] A liquid inlet is provided on one side of the bottom of the sewage pool; a sewage outlet is provided at the bottom of the sewage pool, and the sewage outlet is connected to the return water pool; a liquid outlet is provided on the top of the sewage pool, and the liquid outlet is connected to the reaction pool;

[0010] A coarse filter is provided at the liquid outlet end of the liquid inlet, and the top end of the coarse filter is rotatably installed inside the sewage pool;

[0011] A stirring assembly for mixing sewage and medicine is arranged at the bottom of the sewage pool; the stirring assembly comprises: a motor, a stirring shaft drivingly connected to the output end of the motor, a stirring blade installed on the stirring shaft, and a cam coaxially connected to the stirring shaft;

[0012] A first cleaning member for cleaning the coarse filter is slidably installed in the sewage pool, and one end of the first cleaning member abuts against the cam.

[0013] Furthermore, the first cleaning member includes: a cleaning brush, a first hinged rod hinged to a brush handle of the cleaning brush, and a sliding rod hinged to the other end of the first hinged rod, wherein the sliding rod abuts against the cam.

[0014] Furthermore, a sewage outlet is provided at the bottom end of the sewage pool, a sewage outlet is hinged with a sewage baffle, the sewage baffle is hinged with a second hinged rod, and the second hinged rod is hinged with the frame of the coarse filter.

[0015] Furthermore, a one-way clutch is installed between the cam and the stirring shaft.

[0016] Furthermore, the stirring blade is threadedly connected to the stirring shaft, and limit blocks are respectively installed at both ends of the thread.

[0017] Furthermore, a fine filter is installed transversely in the sewage pool;

[0018] The stirring shaft is also provided with a swinging assembly for driving the fine filter to swing, and the swinging assembly includes: a driving bevel gear coaxially connected to the stirring shaft, a driven bevel gear transmission-connected to the driving bevel gear, and a shaking piece coaxially connected to the driven bevel gear.

[0019] Furthermore, it also includes: a cleaning component for cleaning the fine filter, the cleaning component includes: the driven bevel gear is also coaxially connected to the driving gear, the driving gear is connected to the first driven gear and the second driven gear through a chain transmission; the first driven gear and the second driven gear are respectively located on both sides of the driving gear, and the chain is connected to a second cleaning member.

[0020] Furthermore, the cleaning components are divided into two groups and are symmetrically arranged on both sides of the stirring shaft.

[0021] Furthermore, a reflux chamber is provided on one side of the sewage pool; the inlet and outlet of the reflux chamber are respectively connected to the parts of the sewage pool located on the upper and lower sides of the fine filter; a second filter is provided in the reflux chamber;

[0022] The entrance of the reflux chamber is hinged with an inlet baffle, and a sensor is installed on one side of the inlet baffle.

[0023] When the second cleaning member triggers the sensor, the feed damper opens.

[0024] Furthermore, a dosing port is provided on one side of the liquid inlet, the dosing port is connected to a dosing device, and the dosing device is provided on the sewage pool.

[0025] Compared with the prior art, the present invention has the following beneficial effects: the present invention can filter large particle impurities through a coarse filter and automatically clean the coarse filter to avoid clogging of the coarse filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0027] Figure 1 It is a structural schematic diagram of a sewage treatment equipment of the present invention;

[0028] Figure 2 This is a schematic diagram of the internal structure of a sewage treatment device of the present invention;

[0029] Figure 3 This is a schematic structural diagram of a first cleaning component of a sewage treatment device according to the present invention;

[0030] Figure 4 It is a structural schematic diagram of a swing assembly of a sewage treatment equipment of the present invention;

[0031] Figure 5 A schematic diagram of a swing assembly of a sewage treatment device according to the present invention;

[0032] Figure 6 A schematic diagram of a reflux chamber of a sewage treatment device according to the present invention;

[0033] Figure 7 It is a schematic diagram of a second cleaning member of a sewage treatment device according to the present invention;

[0034] Figure 8 This is a schematic structural diagram of a cleaning component of a sewage treatment device according to the present invention;

[0035] Fig. 9The present invention is a schematic diagram of the internal structure of a sewage pool of sewage treatment equipment.

[0036] In the figure: 1, sewage tank; 2, reaction tank; 3, pressurized tank; 4, clean water tank; 5, return water tank; 11, liquid inlet; 18, coarse filter; 14, stirring assembly; 141, motor; 142, stirring shaft; 143, stirring blade; 144, cam; 145, first cleaning member; 1451, cleaning brush; 1452, first hinged rod; 1453, sliding rod; 121, sewage baffle; 122, second hinged rod; 142 1. Limit block; 15. Fine filter; 16. Swinging assembly; 161. Active bevel gear; 162. Driven bevel gear; 163. Shaking piece; 164. Cleaning assembly; 1641. Active gear; 1642. Chain; 1643. First driven gear; 1644. Second driven gear; 1645. Second cleaning piece; 16451. Rotating section; 17. Reflux chamber; 171. Second filter; 172. Feed baffle. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0038] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] like Figures 1 to 9 As shown, a sewage treatment device of the present invention comprises: a sewage tank 1, a reaction tank 2, a pressure tank 3, a clean water tank 4, and a return water tank 5 connected to the clean water tank 4, which are sequentially arranged along the flow direction of sewage;

[0040] Sewage pool 1 receives sewage and adds disinfectant to the sewage to disinfect it; a layer of biofilm grows on the surface of the filler of reaction pool 2, and the microorganisms in the biofilm remove pollutants in domestic sewage through adsorption, decomposition and other effects. An aerator is provided at the bottom of reaction pool 2 to inject oxygen into the sewage so that the microorganisms can fully utilize the oxygen for metabolism.

[0041] Medical wastewater contains a large number of pathogens such as bacteria and viruses. If not disinfected, these pathogens will enter the environment with the wastewater and pollute water sources, soil, etc., and endanger the ecosystem through the food chain, causing public health incidents; it will increase the risk of cross-infection within the hospital, threatening the health of medical staff and patients, especially those with low immunity.

[0042] A liquid inlet 11 is provided on one side of the bottom of the sewage pool 1 for receiving sewage. In the prior art, a water pump is usually used to pump sewage into the liquid inlet 11; a sewage outlet is provided at the bottom of the sewage pool 1, which is connected to the return water pool 5 and is used to discharge the filtered large particle impurities into the return water pool 5; a liquid outlet is provided on the top of the sewage pool 1, which is connected to the reaction pool 2 and is used to discharge the filtered sewage from the liquid outlet into the reaction pool 2; wherein the return water pool 5 is composed of a reflux part and a sewage discharge part, and the reflux part and the sewage discharge part can be separated by a partition, wherein the sewage discharge part is connected to the sewage outlet.

[0043] A coarse filter 18 is provided at the liquid outlet end of the liquid inlet 11 of the sewage pool 1 for filtering large particles of impurities in the sewage. The top end of the coarse filter 18 is rotatably installed inside the sewage pool 1 and is arranged at an angle. Sewage flows into the sewage pool 1 from the right side and is filtered through the coarse filter 18. The inclined design combined with the direction of water flow helps to guide impurities to the lower left side of the filter, reduce the retention and accumulation of impurities on the surface of the filter, and facilitate the centralized collection of impurities.

[0044] A stirring assembly 14 for mixing sewage and medicine is provided at the bottom of the sewage pool 1; the stirring assembly 14 comprises: a motor 141, a stirring shaft 142 drivingly connected to the output end of the motor 141, a stirring blade 143 installed on the stirring shaft 142, and a cam 144 coaxially connected to the stirring shaft 142; a first cleaning member 145 for cleaning the coarse filter 18 is slidably installed in the sewage pool 1, one end of the first cleaning member 145 abuts against the cam 144, and is used to drive the first cleaning member 145 to slide through the cam 144, thereby driving the coarse filter 18 to shake on the one hand, and cleaning the coarse filter 18 through the first cleaning member 145 on the other hand.

[0045] The first cleaning member 145 includes: a cleaning brush 1451, which consists of a brush body, bristles installed on the cleaning side of the brush body, and a brush handle installed on the non-cleaning side of the brush body; a first hinged rod 1452 hinged to the brush handle of the cleaning brush 1451, and a sliding rod 1453 hinged to the other end of the first hinged rod 1452, the sliding rod 1453 abuts against the cam 144, and when the cam 144 rotates, it abuts against the sliding rod 1453, thereby driving the cleaning brush 1451 to clean the coarse filter 18; wherein the sliding rod 1453 is also connected to a spring, which is used to drive the sliding rod 1453 to reset when the cam 144 is separated from the sliding rod 1453, thereby driving the cleaning brush 1451 to reset; sliding blocks are fixedly installed on both sides of the brush body, and the sliding blocks are slidably connected to the side walls of the sewage pool 1, so that the brush body can slide along the sewage pool 1.

[0046] It can be seen from the above description that in the present application, while the stirring blade 143 stirs the sewage and the reagent, the cleaning brush 1451 can be used to drive the coarse filter 18 to shake and clean the coarse filter 18.

[0047] Preferably, a one-way clutch is installed between the cam 144 and the stirring shaft 142. The one-way clutch is used to separate the stirring and cleaning actions. When the motor 141 drives the stirring blade 143 to stir, the cam 144 does not rotate with the stirring shaft 142 due to the action of the one-way clutch, thereby avoiding continuous cleaning of the coarse filter screen 18, which shortens the service life of the coarse filter screen 18. During actual use, the cam 144 may rotate slightly following the stirring shaft 142, but when it rotates to abut against the sliding rod 1453, it will be difficult to rotate, so this influence can be ignored.

[0048] Preferably, a sewage outlet is opened at the bottom of the sewage pool 1, and a sewage baffle 121 is hinged on the sewage outlet, and the sewage baffle 121 is hinged with a second hinged rod 122, and the second hinged rod 122 is hinged to the frame of the coarse filter screen 18. When the cam 144 drives the cleaning brush 1451 to clean the coarse filter screen 18, the cleaning brush 1451 squeezes the coarse filter screen 18, causing the coarse filter screen 18 to swing intermittently. The intermittent swing of the coarse filter screen 18 drives the sewage baffle 121 to open. At this time, impurities accumulated on the filtering side of the coarse filter screen 18 are intermittently discharged from the sewage outlet.

[0049] During the sewage treatment process, the coarse filter 18 in the sewage pool 1 will continuously intercept various impurities. If these impurities are constantly accumulated on the filtering side of the coarse filter 18, they will gradually clog the pores of the coarse filter 18, which will greatly reduce the filtering efficiency of the coarse filter 18, resulting in a reduction in the flow of sewage through the coarse filter 18, and may even hinder the workflow of the entire sewage pool 1; when the coarse filter 18 is blocked, the intermittent swing of the coarse filter 18 will cause the sewage discharge baffle 121 to open, so that impurities are intermittently discharged, which can effectively avoid excessive accumulation of impurities and ensure that the filtering function of the coarse filter 18 is always in good condition.

[0050] Preferably, the stirring blade 143 is threadedly connected to the stirring shaft 142, and limit blocks 1421 are respectively installed at both ends of the thread. Through the threaded connection and the limit blocks 1421, when the stirring shaft 142 rotates, the stirring blade 143 moves upward or downward along the axial direction of the stirring shaft 142, and when the stirring shaft 142 rotates in the opposite direction, the stirring blade 143 moves in the opposite direction of the stirring shaft 142; the stirring blade 143 can move up and down along the axial direction and stir at different positions respectively; wherein, when stirring in the reverse direction, the speed of the motor 141 can be appropriately reduced, forward rotation accelerates the mixing of materials, reverse rotation slows down the fine mixing, and drives the first cleaning member 145 to move.

[0051] Preferably, a fine filter 15 is also installed transversely in the sewage pool 1 for re-filtering the sewage filtered by the coarse filter 18, wherein three fine filters 15 are arranged at intervals from bottom to top for processing different impurities in stages.

[0052] A swinging assembly 16 for driving the fine filter 15 to swing is also provided on the stirring shaft 142, and the swinging assembly 16 includes: an active bevel gear 161 coaxially connected to the stirring shaft 142, a driven bevel gear 162 transmission-connected to the active bevel gear 161, and a shaking piece 163 coaxially connected to the driven bevel gear 162; the shaking piece 163 directly abuts against the filter, or is connected to the fine filter 15 through a connecting rope, and is used to drive the fine filter 15 to shake through the shaking piece 163, thereby reducing the possibility of impurities adhering to the fine filter 15. At the same time, the rotation of the shaking piece 163 can also stir the sewage horizontally, thereby improving the reaction efficiency of the agent.

[0053] Preferably, it also includes: a cleaning component 164 for cleaning the fine filter 15, and the cleaning component 164 includes: the driven bevel gear 162 is also coaxially connected to the driving gear 1641, and the driving gear 1641 is connected to the first driven gear 1643 and the second driven gear 1644 through the chain 1642; the first driven gear 1643 and the second driven gear 1644 are respectively located on both sides of the driving gear 1641, and the chain 1642 is connected to the second cleaning member 1645; the second cleaning member 1645 is a brush or a brush roller; a protective shell is provided on the outer side of the chain 1642 for protecting the first driven gear 1643, the second driven gear 1644 and the chain 1642, and the outer shell is provided with a notch along the movement direction of the chain 1642 to avoid interference with the second cleaning member 1645.

[0054] A reflux chamber 17 is also provided on one side of the sewage pool 1; the inlet and outlet of the reflux chamber 17 are respectively connected to the parts of the sewage pool 1 located on the upper and lower sides of the fine filter 15; a second filter 171 is provided in the reflux chamber 17, which is used to filter the sewage entering the reflux chamber 17 again, and then discharge the filtered sewage into the sewage pool 1 below the fine filter 15;

[0055] The entrance of the reflux chamber 17 is hinged with a feed baffle 172, and a sensor is installed on one side of the feed baffle 172. The sensor is a pressure sensor or a distance sensor, and is triggered when the second cleaning member 1645 moves to a preset position or contacts the sensor;

[0056] The driving gear 1641 drives the first driven gear 1643 and the second driven gear 1644 to rotate respectively, thereby driving the second cleaning member 1645 to move from one end of the sewage pool 1 to the other end, pushing the impurities to the reflux chamber 17. When the second cleaning member 1645 triggers the sensor, the feed baffle 172 opens, thereby discharging the sewage and impurities into the reflux chamber 17. The second cleaning member 1645 is driven by the chain 1642 to move along the surface of the fine filter 15, which can continuously remove the attached impurities and avoid the clogging of the mesh. The cleaning process is fully automated, reducing the frequency of manual cleaning and reducing the operation and maintenance costs. The second cleaning member 1645 pushes the impurities on the fine filter 15 to the reflux chamber 17 to prevent the impurities from continuing to spread in the water body, and concentrates on filtering and collecting impurities in the reflux chamber 17, further improving the effect of sewage purification.

[0057] As a supplement, the feed baffle 172 can be driven by the motor 141 or the telescopic cylinder to achieve opening and closing of the feed baffle 172 .

[0058] Preferably, the cleaning components 164 are divided into two groups, which are symmetrically arranged on both sides of the stirring shaft 142, and are used for cleaning on both sides respectively, so that the fine filter 15 can be completely cleaned; the ends of the two second cleaning components 1645 close to each other can be hinged to the rotating section 16451, which can completely clean the fine filter 15 on the one hand, and avoid interference with the stirring shaft 142 on the other hand.

[0059] Preferably, a pressure difference sensor is installed on the filtering side and the non-filtering side of the coarse filter 18 respectively, which is used to detect the pressure difference between the front and rear ends of the coarse filter 18. A control box is provided on one side of the sewage pool 1, and a pressure difference threshold is preset in the system. When the pressure difference measured in real time exceeds the threshold, the motor 141 reverses, driving the stirring component 14 to stir while driving the first cleaning component 145 to clean the coarse filter 18, and then opens the sewage baffle 121 to discharge impurities intermittently, and closes the water inlet valve to allow the cleaned impurities and accumulated impurities to flow out from the sewage outlet; in order to ensure the sealing of the sewage baffle 121, an electromagnet can also be provided. When the motor 141 reverses, the electromagnet is not energized, and when the motor 141 rotates forward, the electromagnet is energized.

[0060] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0061] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A sewage treatment equipment, characterized in that: include: A sewage tank, a reaction tank, a pressure tank, a clean water tank, and a return water tank connected to the clean water tank are sequentially arranged along the flow direction of the sewage; A liquid inlet is provided on one side of the bottom of the sewage pool; a sewage outlet is provided at the bottom of the sewage pool, and the sewage outlet is connected to the return water pool; a liquid outlet is provided on the top of the sewage pool, and the liquid outlet is connected to the reaction pool; A coarse filter is provided at the liquid outlet end of the liquid inlet, and the top end of the coarse filter is rotatably installed inside the sewage pool; A stirring assembly for mixing sewage and medicine is arranged at the bottom of the sewage pool; the stirring assembly comprises: a motor, a stirring shaft drivingly connected to the output end of the motor, a stirring blade installed on the stirring shaft, and a cam coaxially connected to the stirring shaft; A first cleaning member for cleaning the coarse filter is slidably installed in the sewage pool, and one end of the first cleaning member abuts against the cam.

2. A sewage treatment equipment as claimed in claim 1, characterized in that: The first cleaning member comprises: a cleaning brush, a first hinged rod hinged to a brush handle of the cleaning brush, and a sliding rod hinged to the other end of the first hinged rod, wherein the sliding rod abuts against the cam.

3. A sewage treatment equipment as claimed in claim 2, characterized in that: A sewage outlet is provided at the bottom end of the sewage pool, a sewage outlet is hinged with a sewage baffle, the sewage baffle is hinged with a second hinged rod, and the second hinged rod is hinged with the frame of the coarse filter.

4. A sewage treatment equipment as claimed in claim 1, characterized in that: A one-way clutch is installed between the cam and the stirring shaft.

5. A sewage treatment equipment as claimed in claim 1, characterized in that: The stirring blade is threadedly connected to the stirring shaft, and limit blocks are respectively installed at both ends of the thread.

6. A sewage treatment equipment as claimed in claim 1, characterized in that: A fine filter is also installed horizontally in the sewage pool; The stirring shaft is also provided with a swinging assembly for driving the fine filter to swing, and the swinging assembly includes: a driving bevel gear coaxially connected to the stirring shaft, a driven bevel gear transmission-connected to the driving bevel gear, and a shaking piece coaxially connected to the driven bevel gear.

7. A sewage treatment equipment as claimed in claim 6, characterized in that: Also includes: A cleaning component for cleaning the fine filter, the cleaning component comprising: the driven bevel gear is also coaxially connected to a driving gear, the driving gear is connected to a first driven gear and a second driven gear through a chain transmission; the first driven gear and the second driven gear are respectively located on both sides of the driving gear, and a second cleaning member is connected to the chain.

8. A sewage treatment equipment as claimed in claim 7, characterized in that: The cleaning components are divided into two groups and are symmetrically arranged on both sides of the stirring shaft.

9. A sewage treatment equipment as claimed in claim 7 or 8, characterized in that: A reflux chamber is also provided on one side of the sewage pool; the inlet and outlet of the reflux chamber are respectively connected to the parts of the sewage pool located on the upper and lower sides of the fine filter; a second filter is provided in the reflux chamber; The entrance of the reflux chamber is hinged with an inlet baffle, and a sensor is installed on one side of the inlet baffle. When the second cleaning member triggers the sensor, the feed damper opens.

10. A sewage treatment equipment as claimed in claim 1, characterized in that: A dosing port is arranged on one side of the liquid inlet, and the dosing port is connected to a dosing device, and the dosing device is arranged on the sewage pool.

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