Solid-liquid separation device and restaurant wastewater oil separation lifting equipment

Abstract

The utility model discloses a solid-liquid separation device and restaurant wastewater oil separation lifting equipment, and relates to garbage treatment equipment. Comprising a water storage tank and a separation assembly, and the separation assembly is arranged in the water storage tank; the separation assembly comprises a separation part, a scraping part and a waste bin, the separation part is arranged in the water storage tank, the scraping part is arranged on the side wall of the water storage tank and makes contact with the separation part, and the scraping part pushes waste placed on the separation part to fall into the waste bin. The device has the advantages that the content of the separated solid wastewater is low, and the grating holes are not easy to block.

Description

Technical Field

[0001] The utility model relates to garbage disposal equipment, in particular to a solid-liquid separation device and an oil separation and lifting equipment for catering wastewater. Background Art

[0002] Generally, solid-liquid separation of kitchen waste is realized in the kitchen, especially in high-rise residential buildings at the present stage. To reduce the probability of sewer blockage, a filter screen is generally added at the water outlet of the kitchen sink. However, a small amount of kitchen waste still falls into the sewer, resulting in a small amount of solid waste in the kitchen wastewater. And due to the special use environment of the kitchen, the proportion of oil-containing wastewater is relatively high. When this kind of wastewater is discharged into the sewer and sent to sewage treatment, generally solid-liquid separation and water-oil separation are required. General solid-liquid separation uses a sedimentation tank, and the solid waste sinks to the bottom by static settlement, or mechanical equipment is used for solid-liquid separation, such as using a filter screen, that is, the oil-containing sewage is directly transported through a pipeline above the filter screen. Solid waste separation is achieved through filter screens with different precisions. This filtering method requires regular cleaning of the filter screen. The general cleaning method is manual brushing or direct flushing, which not only wastes time and has low efficiency, but also often uses a single layer of filter screen for filtering, and the water content in the solid waste is still relatively high, resulting in high subsequent treatment costs. Summary of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a solid-liquid separation device and an oil separation and lifting equipment for catering wastewater.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] The utility model discloses at least one solid-liquid separation device, including a water storage tank and a separation component, and the separation component is arranged in the water storage tank;

[0006] The separation component includes a separation part, a scraping part and a waste box. The separation part is arranged in the water storage tank. The scraping part is arranged on the side wall of the water storage tank and is in contact with the separation part. The scraping part pushes the waste placed on the separation part into the waste box.

[0007] The separation part includes at least one group of filter screens. The scraping part is placed above the filter screens. The scraping part is attached to the filter screens and moves along the end face of the filter screens. The waste placed on the end face of the filter screens is pushed by the scraping part into the waste box.

[0008] The separation part includes two groups of filter screens. The two groups of filter screens are arranged in sequence and connected to each other. A group of scraping parts is arranged above each group of filter screens.

[0009] The filter screen includes a mesh plate and support bars. The mesh plate is arc-shaped. The support bars are fixed inside the water storage tank and are above the water surface of the water storage tank. The mesh plate is fixed on the support bars.

[0010] The scraping part includes a number of rotating arms, a scraper, and a rotating shaft. One end of each rotating arm is fixed with a scraper. The rotating shaft is rotatably connected to the inner wall of the water storage tank. The number of rotating arms is radially arranged around the rotating shaft. When the rotating arms rotate, the scraper contacts the mesh plate in sequence.

[0011] The scraper includes a plate body and a number of comb teeth. The number of comb teeth is fixed on the edge of the scraper. When the scraper contacts the mesh plate, the comb teeth are inserted into the grid holes of the mesh plate.

[0012] The top of the water storage tank is provided with a water inlet, and the bottom of the water storage tank is provided with a slag outlet, and the slag outlet is communicated with the waste bin.

[0013] This application also discloses a catering wastewater oil separation and lifting device, which applies a solid-liquid separation device. The bottom of the water storage tank is provided with a water outlet. The catering wastewater oil separation and lifting device further includes an oil removal device, and the water outlet is communicated with the oil removal device.

[0014] The oil removal device includes a static settling tank. The water outlet is communicated with the static settling tank. The top of the static settling tank is provided with an oil collection tank, and the oil collection tank is communicated with the static settling tank. An oil outlet is opened on the side wall of the oil collection tank.

[0015] A balance port is opened on the oil collection tank. A lifting tank is arranged on one side of the static settling tank. An overflow pipe is inserted into the top of the static settling tank. The overflow pipe extends out of the side wall of the static settling tank and is provided with a first overflow port and a second overflow port from top to bottom. The first overflow port is communicated with the oil collection tank through a pipeline, and the second overflow port is communicated with the lifting tank through a pipeline. A lifting pump is arranged in the lifting tank for conveying the stored water in the lifting tank.

[0016] Compared with the prior art, when the present utility model filters solid waste in wastewater, the solid waste stays on the mesh plate, and then is scraped off by the scraper. The scraper scrapes the solid waste remaining on the mesh plate and pushes the solid waste towards the direction of the waste bucket and finally falls into the waste bucket. And during the pushing process, the comb teeth on the scraper will also dredge the grid holes of the mesh plate once, reducing the probability of the mesh plate being blocked, reducing the frequency of manual dredging, and improving the dredging efficiency. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the catering wastewater oil separation and lifting device in the present utility model;

[0018] Figure 2It is a schematic diagram of the internal structure of the oil separation and lifting equipment for catering wastewater in the present utility model Figure 1 ;

[0019] Figure 3 It is a schematic diagram of the scraping part structure of the oil separation and lifting equipment for catering wastewater in the present utility model;

[0020] Figure 4 It is a schematic diagram of the separation part structure of the oil separation and lifting equipment for catering wastewater in the present utility model;

[0021] Figure 5 It is a schematic diagram of the internal structure of the oil separation and lifting equipment for catering wastewater in the present utility model Figure 2 ;

[0022] In the figure: 1. Water storage tank; 11. Slag outlet; 2. Separation assembly; 21. Separation part; 211. Mesh plate; 212. Support bar; 22. Scraping part; 221. Rotating arm; 222. Scraper; 223. Rotating shaft; 224. Comb teeth; 3. Static tank; 4. Oil collection tank; 5. Lifting tank; 6. Overflow pipe; 7. Lifting pump. Specific embodiments

[0023] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be combined arbitrarily to form new embodiments.

[0024] Referring to Figures 1-5 , for an oil separation and lifting equipment for catering wastewater, since catering wastewater (kitchen wastewater) usually contains a small amount of oil in addition to a small amount of solid waste, that is, an oil-water mixture containing solid waste. When using the oil separation and lifting equipment for catering wastewater to treat such wastewater (not only catering wastewater, but also any other oil-water mixture containing solid waste), the first step in the treatment is to separate the solid waste from the oil-containing liquid. That is, the equipment needs to have at least a solid-liquid separation device for separation. To separate the solid waste for centralized treatment.

[0025] The solid-liquid separation device in this application includes a water storage tank. A separation assembly is installed in the water storage tank. A slag outlet is opened on the water storage tank, and a water inlet is opened above the water storage tank. The water inlet can be connected to the conveying pipeline through a flange. Then the conveying pipeline can be directly connected to the water inlet to convey wastewater to the water inlet. An inlet baffle can be fixed near the water inlet inside the water storage tank. One end of the inlet baffle is fixed to the top of the water storage tank, and the other end extends towards the separation assembly. When water enters, the inlet baffle plays a guiding role to ensure that all sewage needs to pass through the separation assembly for solid-liquid separation before being temporarily stored in the water storage tank.

[0026] The separation component includes a separation part, a scraping part, and a waste bin. After the sewage enters from the water inlet, it first contacts the separation part. The separation part includes at least one set of filter screens. The whole filter screen is placed below the water inlet. Thus, the liquid and solid waste in the sewage are separated, and the solid waste remains on the filter screen to achieve solid-liquid separation. After the solid waste remains on the filter screen, the scraping part rotates to push the solid waste remaining on the filter screen towards the waste bin and finally fall into the waste bin. At the same time, during the process of being stirred by the scraping part, the solid waste will be spread out on the filter screen, so that the moisture on the solid waste can be separated from the solid waste as much as possible, making the solid waste drier, reducing the moisture content in the solid waste, not only making the subsequent treatment simpler but also reducing the subsequent treatment cost.

[0027] More specifically, two sets of filter screens can be set. The two sets of filter screens can be connected in sequence, and it is ensured that one set of filter screens needs to be fixed below the water inlet. The end of this set of filter screens close to the water inlet is positioned as the head end, and the end far from the water inlet is defined as the tail end. The other set of filter screens can be fixed at the tail end of the previous set of filter screens and extend towards the waste bin. The two sets of filter screens together form a wavy shape. The two sets of filter screens are only used for distinction. In fact, the two sets of filter screens can be integrally processed and formed. In this embodiment, a set of scraping parts can be arranged above each set of filter screens, that is, on the set of filter screens close to the water inlet, the scraping part is used to turn the solid waste and push the solid waste towards the other set of filter screens to increase the spreading time of the solid waste on the filter screen, minimize the moisture content of the solid waste, reduce the subsequent treatment difficulty, improve the treatment efficiency and reduce the treatment cost at the same time. The structures of the filter screens are the same, including a filter net which includes a net plate and support bars. The net plate is arc-shaped, the support bars are fixed in the water storage tank and above the water surface of the water storage tank, and the net plate is fixed on the support bars. Two or more sets of net plates can be connected in sequence to form a continuous net plate structure. Of course, multiple sets of net plates also form a wavy shape. There are several grid holes on the net plate for filtering. In addition to being able to push the solid waste on the net plate, the scraping part can also insert into the grid holes on the net plate during the pushing process, and then can take out the solid waste remaining in the grid from the holes of the grid, that is, the net plate can be dredged to reduce the possibility of the net plate being blocked. At the same time, the solid waste can be spread out by the pushing of the scraping part to reduce the moisture content of the solid waste.

[0028] The scraping part includes several rotating arms, a scraper, and a rotating shaft. One end of each rotating arm is fixedly connected to the scraper, and the rotating shaft is rotatably connected to the inner wall of the water storage tank. The several rotating arms are radially arranged around the rotating shaft. When the rotating arms rotate, the scraper sequentially contacts the mesh plate. The scraper includes a plate body and several comb teeth. The several comb teeth are fixed to the edge of the scraper. When the scraper contacts the mesh plate, the comb teeth are inserted into the grid holes of the mesh plate. Driven by the rotating arms, the scraper is sequentially inserted into the mesh plate. At this time, the comb teeth are correspondingly inserted into the grid, which not only cleans but also promotes the solid waste to be spread out for airing, reducing the water retention in the solid waste, enabling the water on the solid waste to be separated from the solid waste as much as possible, making the solid waste drier, reducing the water content in the solid waste, not only making the subsequent treatment simpler but also reducing the subsequent treatment cost.

[0029] The solid waste after solid-liquid separation correspondingly falls into the waste bin, and the separated sewage is hereinafter referred to as oil-water for distinction. The water storage tank is communicated with the static tank. It can be communicated by opening a water outlet on the water storage tank, or even directly using an integrally made box body as the connection. The water storage tank and the static tank are only functional distinctions of the box body. An electric heating tube can be fixed in the box body. The electric heating tube can be one or a pair. If a pair of electric heating tubes is adopted, the electric heating tubes are alternately used as backups to reduce the failure rate. The electric heating tube is inserted into the oil layer to heat the floating oil liquid to prevent the oil liquid from solidifying and sticking to the wall. The oil-water flows from the water storage tank into the static tank for static settlement. Then, due to the density difference between water and oil, the lighter oil liquid will float on the upper layer of the water surface. A collecting oil tank is fixed on the top of the static tank. This collecting oil tank is communicated with the static tank. As the water level in the static tank rises, the oil liquid on the upper layer of the oil-water will be concentrated in the collecting oil tank. An oil outlet is fixedly opened on the side wall of the collecting oil tank, and the oil liquid can be discharged from this oil outlet. The oil outlet can be controlled by a valve to facilitate closing or opening the oil outlet.

[0030] A water collecting port can be respectively opened on the water storage tank and / or the static tank. The water collecting port is opened on the side wall near the bottom of the water storage tank or the static tank. Or a lifting tank is arranged on one side of the static tank away from the water storage tank. A balance port is opened on the collecting oil tank. A overflow pipe is inserted into the top of the static tank. The overflow pipe extends out of the side wall of the static tank and is provided with a first overflow port and a second overflow port from top to bottom. The first overflow port is communicated with the collecting oil tank through a pipeline, and the second overflow port is communicated with the lifting tank through a pipeline. The overflow pipe is mainly used to balance the internal and external air pressure difference to avoid the phenomenon of poor water flow. After the water level in the static tank rises to a certain extent, it can flow into the lifting tank through the second overflow port and can be statically settled again to further separate the oil and water. A lifting pump is arranged in the lifting tank to transport the stored water in the lifting tank. That is, the separation of solid-liquid and water-oil is realized. The stored water can be transported to the next treatment process for further treatment after being lifted by the lifting pump.

[0031] Compared with the prior art, when the utility model filters solid waste in wastewater, the solid waste stays on the mesh plate and is then scraped off by a scraper. The scraper scrapes the solid waste remaining on the mesh plate and pushes the solid waste in the direction of the waste bucket and finally drops into the waste bucket. During the pushing process, the comb teeth on the scraper will also dredge the grid holes of the mesh plate once, reducing the probability of the mesh plate being blocked, reducing the frequency of manual dredging, and improving the dredging efficiency.

[0032] The above embodiments are only the preferred embodiments of the utility model and cannot be used to limit the scope of protection of the utility model. Any non-substantial changes and substitutions made by those skilled in the art on the basis of the utility model belong to the scope of protection required by the utility model.

Claims

1. A solid-liquid separation device, comprising a water storage tank and a separation component, characterized in that: The separation component is arranged in the water storage tank; The separation assembly comprises a separation part, a scraping part and a waste box, wherein the separation part is arranged in the water storage box, the scraping part is arranged on the side wall of the water storage box and contacts the separation part, and the scraping part pushes the waste placed on the separation part to fall into the waste box; The separation part includes at least one set of filter screens, the scraping part is placed above the filter screens, the scraping part is in contact with the filter screens, and moves along the end surface of the filter screens, and the waste placed on the end surface of the filter screens is pushed by the scraping part to fall into the waste box; The filter screen includes a mesh plate and a support bar, the mesh plate is arc-shaped, the support bar is fixed in the water storage tank and placed above the water surface of the water storage tank, and the mesh plate is fixed on the support bar; The scraping part includes a plurality of rotating arms, a scraper and a rotating shaft, a scraper is fixed at one end of each rotating arm, the rotating shaft is rotatably connected to the inner wall of the water storage tank, and the plurality of rotating arms are radially arranged with the rotating shaft as the center, and the scraper contacts the mesh plate in sequence when the rotating arms rotate; The scraper comprises a plate body and a plurality of comb teeth, wherein the plurality of comb teeth are fixed on the edge of the scraper, and when the scraper contacts the mesh plate, the comb teeth are inserted into the grid holes of the mesh plate.

2. A solid-liquid separation device according to claim 1, characterized in that: The separation part comprises two groups of filter screens, which are arranged in sequence and connected to each other, and a group of scraping parts is arranged above each group of filter screens.

3. A solid-liquid separation device according to claim 1, characterized in that: The top of the water storage tank is provided with a water inlet, and the bottom of the water storage tank is provided with a slag outlet, and the slag outlet is communicated with the waste tank.

4. A catering wastewater oil separation and lifting equipment, characterized in that: Using the solid-liquid separation device as described in any one of claims 1-3, a water outlet is opened at the bottom of the water storage tank, and the catering wastewater oil separation and lifting equipment also includes an oil removal device, and the water outlet is connected to the oil removal device.

5. A restaurant wastewater oil separation and lifting equipment according to claim 4, characterized in that: The oil removal device comprises a static box, the water outlet is communicated with the static box, an oil collecting box is arranged on the top of the static box, the oil collecting box is communicated with the static box, and an oil outlet is arranged on the side wall of the oil collecting box.

6. A restaurant wastewater oil separation and lifting equipment according to claim 5, characterized in that: A balancing port is provided on the oil collecting tank, a lifting box is arranged on one side of the static box, an overflow pipe is inserted into the top of the static box, the overflow pipe extends out from the side wall of the static box, and a first overflow port and a second overflow port are provided from top to bottom. The first overflow port is connected to the oil collecting tank through a pipeline, and the second overflow port is connected to the lifting box through a pipeline. A lifting pump is provided in the lifting box for transporting the stored water in the lifting box.

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