Wastewater sedimentation device and wastewater treatment device

Abstract

The utility model belongs to the technical field of wastewater treatment devices. The wastewater sedimentation device is characterized by comprising a sedimentation cavity; the filter plate assembly is arranged in the middle of the settling cavity and divides the settling area into a first settling area and a second settling area; a liquid inlet pipe assembly is arranged in the first sedimentation area, and a liquid outlet of the liquid inlet pipe assembly is located in the lower portion of the first sedimentation area. The waste water cooking pot is used for solving the technical problems that the existing waste water cooking pot is easy to block a fluid channel and foam. The utility model further discloses a wastewater treatment device which comprises the wastewater sedimentation device.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment devices, specifically to a leaching workshop for large-scale edible oil production, and solves the problem of the impact of meal particles captured by a wet collector on downstream equipment, and implements meal particle separation equipment in advance. Background Art

[0002] During the edible oil production process, cyclones capture dry meal particles larger than 1mm in the gas phase. Some smaller meal particles are carried along with the airflow into subsequent equipment. According to the production process layout, this airflow first enters a heat exchanger for condensation. If meal particles adhere to the heat exchange tubes, thermal resistance increases, reducing heat transfer efficiency. Therefore, a wet collector is added to capture fine particles and purify the gas phase. The captured liquid contains solvent and meal particles. To recover this solvent, the captured liquid is piped to a wastewater digester for heating. The boiling point of the solvent is lower than that of water, and the solvent is converted into gas through pipes and recovered in a separate condensation system. As the liquid continues to flow into the digester for evaporation, the accumulation of meal particles can easily clog the fluid channels, reducing the efficiency of the digester's solvent evaporation and necessitating the equipment be opened for cleaning.

[0003] In short, the liquid captured by the wet collector is directly transported to the wastewater cooking tank through a pipeline for cooking, causing blockage and foaming of the flow channel of the wastewater cooking tank, degradation of the performance of the wastewater cooking tank, excessive solvent content in the discharged wastewater, and increased maintenance and flushing times. Utility Model Content

[0004] The first purpose of the utility model is to provide a wastewater sedimentation device to solve the technical problems of easy blockage of fluid channels and foaming in existing wastewater boiling tanks.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions, the wastewater sedimentation device is characterized by comprising:

[0006] sedimentation cavity;

[0007] A filter plate assembly is arranged in the middle of the sedimentation chamber to separate the sedimentation area into a first sedimentation area and a second sedimentation area;

[0008] A liquid inlet pipe assembly is provided in the first sedimentation zone, and a liquid outlet of the liquid inlet pipe assembly is located at the lower part of the first sedimentation zone.

[0009] Liquid passes through the filter screen on the filter plate assembly of the utility model, intercepting meal powder of corresponding particle size, where it is allowed to settle before being discharged into the downstream wastewater digester for treatment. The utility model can effectively separate meal particles of corresponding particle size, prevent meal particles from clogging the pipeline in the wastewater digester, reduce the residual solvent content in the discharged water, recover the solvent for reuse, and improve economic value.

[0010] To address the technical problem of how to implement a liquid inlet pipe assembly, the present invention employs the following technical solution: the liquid inlet pipe assembly is J-shaped and includes a straight pipe and a curved pipe. The curved pipe is disposed at the lower end of the straight pipe, and the liquid outlet of the curved pipe faces the cavity wall of the first sedimentation zone. The present invention employs a J-shaped structure and is inserted below the sedimentation chamber, with the liquid outlet facing the side wall of the sedimentation chamber. The fluid impacts the side wall of the sedimentation chamber and then returns, reducing the flow intensity and allowing this portion of the fluid to flow smoothly.

[0011] In order to solve the technical problem of low flow rate at the outlet of the liquid inlet pipe, the utility model adopts the following technical solution: the outlet of the bent pipe is beveled. The beveled outlet of the bent pipe increases the liquid outlet area and reduces the liquid outlet speed.

[0012] To solve the technical problem of gas backflow, the present invention adopts the following technical solution: the liquid outlet of the curved pipe is located below the liquid level of the sedimentation chamber. The liquid outlet extends into the liquid, forming a liquid seal effect, preventing gas from escaping to the wet collector through the liquid inlet pipe.

[0013] In order to solve the technical problem of how to fix the filter assembly on the inner wall of the sedimentation chamber, the utility model adopts the following technical solution: the filter plate assembly is plugged and connected to the inner wall of the sedimentation chamber; the filter plate assembly is vertically and eccentrically arranged.

[0014] In order to solve the technical problem of how to realize the filter plate assembly, the utility model adopts the following technical solution, and the filter plate assembly includes:

[0015] A filter frame, the filter frame is matched with the inner wall of the sedimentation chamber; a cross-shaped support frame is provided on the filter frame;

[0016] The filter screen is arranged on the filter frame and the cross-shaped support frame through a pressing plate and fasteners.

[0017] The filter plate assembly adopts the form of filter frame + filter screen + pressure plate, and is supported by a cross-shaped support frame in the middle. The entire frame has good rigidity and is connected and fixed with a certain number of fasteners.

[0018] In order to solve the technical problem of how to plug the filter plate assembly into the inner wall of the sedimentation chamber, the utility model adopts the following technical solution: a fixed frame is provided on the inner wall of the sedimentation chamber, and the fixed frame cooperates with the inner wall of the sedimentation chamber;

[0019] The filter frame is inserted into the fixing frame.

[0020] The fixed frame is welded to the inner wall of the sedimentation chamber to form a sealed structure, leaving no gaps for liquid to pass through. The filter frame can move up and down on the fixed frame.

[0021] To address the technical issues of the filter plate assembly swaying within the fixed frame and liquid leakage between the filter frame and the fixed frame, the present invention adopts the following technical solution: a seal is provided between the filter frame and the fixed frame. To prevent swaying in the gap, a sealing gasket is installed between the fixed frame and the filter frame, thereby stabilizing the filter plate assembly and preventing fluid from flowing through the gap.

[0022] In order to solve the technical problem of the deterioration of the filtering effect of the filter plate after long-term use, the utility model adopts the following technical solution: a flushing component is provided in the second sedimentation zone for reverse flushing the filter plate assembly.

[0023] The utility model arranges a flushing component in the second sedimentation area, and utilizes a rotating nozzle to clean the filter screen of the filter plate component, with a large cleaning area and convenient operation.

[0024] To solve the technical problem of how to implement a flushing assembly, the present invention adopts the following technical solution: the flushing assembly includes a flushing pipe with a rotating nozzle disposed at the bottom of the flushing pipe. The rotating nozzle is used to clean the filter screen of the filter plate assembly, covering a large cleaning area and also cleaning solids attached to the inner wall of the settling chamber, making operation convenient.

[0025] In order to solve the technical problem of how to realize the sedimentation chamber, the utility model adopts the following technical solution: the sedimentation chamber includes a cylindrical portion and a lower head, and an upper flat cover is provided on the top of the cylindrical portion;

[0026] The upper flat cover is provided with an exhaust port, a first inspection port, and the liquid inlet pipe assembly; the first inspection port corresponds to the filter plate assembly and is used for replacing the filter plate assembly;

[0027] The flushing assembly is detachably arranged on the upper flat cover.

[0028] The utility model installs a filter plate assembly inside the sedimentation chamber, and installs a first inspection port at a corresponding position of the upper flat cover, through which the entire filter plate assembly can be lifted out of the sedimentation chamber for inspection.

[0029] In order to solve the technical problem of slag discharge in the first and second sedimentation zones, the present utility model adopts the following technical solution: a first liquid discharge port is provided on the lower head of the first sedimentation zone;

[0030] A second liquid drain port is provided on the lower cover of the second sedimentation zone.

[0031] The utility model is provided with two liquid discharge ports at the bottom end cap position, and the pipeline valve is opened regularly or irregularly to discharge the liquid into the downstream equipment for processing the discharged liquid.

[0032] In order to solve the technical problems of repairing the filter plate assembly and the flushing assembly and discharging the liquid from the second sedimentation area, the utility model adopts the following technical solution: a second inspection port is provided on the side wall of the second sedimentation area, and the second inspection port is arranged upwardly inclined for repairing the filter plate assembly and the flushing assembly;

[0033] A liquid outlet is provided on the side wall of the second settling zone, and the liquid outlet is located below the second inspection port;

[0034] The rotating nozzle is located below the liquid outlet.

[0035] The utility model installs an inclined second inspection port on the cylindrical part of the sedimentation chamber, which can be opened to inspect the interior of the equipment when it is shut down. The filter plate assembly and the rotating nozzle of the flushing assembly can be inspected through the second inspection port.

[0036] The second object of the present utility model is to provide a wastewater treatment device, which is characterized in that it includes a dry collection device, a wet collection device and a wastewater boiling device connected in sequence, and a wastewater sedimentation device described in any one of the above items is arranged between the wet collection device and the wastewater boiling device.

[0037] The utility model adds a wastewater settling device in front of the wastewater boiling device, which can effectively solve the problem of clogging and foaming of the wastewater boiling tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural diagram of the wastewater sedimentation device of the utility model;

[0039] Figure 2 This is a schematic diagram of the structure of the filter plate assembly of the wastewater sedimentation device of the present utility model;

[0040] Figure 3 yes Figure 2 Cross-sectional view in the AA direction;

[0041] Figure 4 This is a schematic structural diagram of the liquid inlet pipe assembly of the wastewater sedimentation device of the utility model;

[0042] Figure 5 This is a schematic structural diagram of the flushing component of the wastewater sedimentation device of the utility model;

[0043] Figure 6 It is a structural diagram of the wastewater treatment device of the utility model;

[0044] In the picture:

[0045] Wastewater treatment plant 10;

[0046] 100 wastewater sedimentation device;

[0047] 110 sedimentation chamber; 1111 first sedimentation area; 1112 second sedimentation area; 112 exhaust port; 113 fixed frame; 1131 first mounting plate; 1132 second mounting plate; 1141 first drain port; 1142 second drain port; 1151 first inspection port; 1152 second inspection port; 116 liquid outlet; 117 cylindrical portion; 118 lower head; 119 upper flat cover;

[0048] 120 liquid inlet pipe assembly; 121 straight pipe; 122 elbow pipe; 1220 elbow pipe liquid outlet;

[0049] 130 filter plate assembly; 131 filter frame; 132 filter screen; 133 pressure plate; 134 fastener; 135 lifting handle; 136 cross support frame; 137 sealing member;

[0050] 140 flushing assembly; 141 flushing pipe; 142 rotating nozzle;

[0051] 200 dry capture device;

[0052] 300 wet capture device;

[0053] 400 wastewater cooking unit. DETAILED DESCRIPTION

[0054] Example 1

[0055] like Figure 1 As shown, the wastewater sedimentation device 100 includes a sedimentation chamber 110 and a filter plate assembly 130 .

[0056] The sedimentation chamber 110 includes a cylindrical portion 117, a lower end cap 118, and an upper flat cover 119. The upper flat cover 119 is mounted on the top of the cylindrical portion 117. The lower end cap 118 is welded to the bottom of the cylindrical portion 117. The exhaust port 112 is mounted on the upper flat cover 119.

[0057] like Figure 1 As shown, a filter plate assembly 130 is installed in the middle of the sedimentation chamber 110. The filter plate assembly 130 divides the sedimentation chamber 110 into a first sedimentation area 1111 and a second sedimentation area 1112.

[0058] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 3 The filter plate assembly 130 is plugged into the inner wall of the settling chamber 110. It is vertically and eccentrically positioned. Specifically, it comprises a filter frame 131 and a filter screen 132. The filter screen has a 30-mesh size, effectively filtering medium-sized meal particles. The filter screen is fixed to the filter frame. During equipment maintenance, the filter frame can be removed to clean the filter screen.

[0059] Filter frame 131 mates with the inner wall of sedimentation chamber 110; a cross-shaped support frame 136 is mounted on filter frame 131. Filter screen 132 is mounted on filter frame 131 and cross-shaped support frame 136 via a pressure plate 133 and fasteners 134. The filter plate assembly utilizes a filter frame + filter screen + pressure plate configuration, with a central cross-shaped support frame providing support. The entire frame is rigid and secured with a number of fasteners.

[0060] In one embodiment, a fixed frame 113 is welded to the inner wall of the sedimentation chamber 110. The fixed frame 113 cooperates with the inner wall of the sedimentation chamber. Specifically, the fixed frame 113 is U-shaped and includes a first mounting plate 1131 and two second mounting plates 1132. The first mounting plate 1131 is welded to the inner wall of the sedimentation chamber, and the second mounting plates 1132 are welded on both sides of the end of the first mounting plate 1131. A mounting groove is formed between the two second mounting plates 1132 for plugging and connecting the filter frame 131. The fixed frame is welded to the inner wall of the sedimentation chamber to form a sealed structure, and there is no gap where liquid cannot pass.

[0061] In one embodiment, please refer to Figure 3 , a seal 137 is provided between the filter frame 131 and the fixed frame 113. The seal 137 is preferably a sealing strip or a soft sealing gasket. A seal is installed between the filter frame and the fixed frame, so that the liquid will not flow through the gap there, and at the same time, the inserted filter plate assembly will not shake and produce noise. When the filter plate assembly is installed in the sedimentation chamber, a seal is installed, and the overall structure is stable and does not shake, eliminating the gap between the filter plate assembly and the fixed frame. To prevent the gap from shaking, a sealing gasket is installed between the fixed frame and the filter frame to stabilize the filter plate assembly and prevent the fluid from flowing through the gap.

[0062] In one embodiment, please refer to Figure 2 , a lifting handle 135 is installed on the top of the filter frame 131. Specifically, two lifting handles 135 are welded on the upper part of the filter frame, and the filter frame can move up and down.

[0063] The liquid passes through the filter screen on the filter plate assembly, intercepting meal particles of the corresponding particle size. The liquid is then allowed to settle and then discharged through the liquid outlet on the sedimentation chamber into the downstream wastewater digester for treatment. The lower part of the sedimentation chamber forms an effective static layer, where the meal particles are effectively settled.

[0064] Please refer to Figure 4, the liquid inlet pipe assembly 120 is located in the first sedimentation area 1111. Specifically, the liquid inlet pipe assembly 120 is installed on the upper flat cover 119. Specifically, the liquid inlet pipe assembly 120 is J-shaped, including a straight pipe 121 and a curved pipe 122. The straight pipe 121 is arranged vertically. The curved pipe 122 is installed at the lower end of the straight pipe 121. The curved pipe liquid outlet 1220 faces the cavity wall of the first sedimentation area 1111. The liquid inlet pipe assembly adopts a J-type connecting pipe, and the liquid outlet is located at the lower part of the sedimentation cavity. The liquid inlet pipe assembly of the utility model adopts a J-type structure, which is inserted under the sedimentation cavity, and the liquid outlet is directed toward the side wall of the sedimentation cavity. The fluid impacts the side wall of the sedimentation cavity and returns, reducing the flow intensity, allowing this part of the fluid to flow smoothly.

[0065] In one embodiment, the bend liquid outlet 1220 is beveled. Specifically, the bend liquid outlet 1220 is beveled downward. The beveled bend liquid outlet increases the liquid outlet area and reduces the liquid outlet speed.

[0066] In one embodiment, the liquid outlet of the liquid inlet pipe assembly 120 is located at the bottom of the first settling zone 1111. Specifically, the elbow liquid outlet 1220 is located below the liquid level in the settling chamber 110. The outlet extends into the liquid, creating a liquid seal that prevents gas from escaping through the liquid inlet pipe to the wet collector.

[0067] In one embodiment, please refer to Figure 5 A flushing assembly 140 is provided in the second settling zone 1112 for backwashing the filter plate assembly. Specifically, the flushing assembly 140 is detachably provided on the upper flat cover 119. The flushing assembly 140 includes a flushing pipe 141, and a rotating nozzle 142 is provided at the bottom of the flushing pipe 141.

[0068] The upper flat cover features a removable flushing assembly for easy maintenance. The filter plate assembly is backwashed based on the color of the water flowing from the outlet. A rotating nozzle at the bottom of the flushing assembly provides flushing. This utility model incorporates a flushing assembly in the second settling zone, utilizing a rotating nozzle to clean the filter screen of the filter plate assembly. This provides a large cleaning area and also removes solids adhering to the inner wall of the settling chamber, making operation easy.

[0069] In one embodiment, a first access opening 1151 is provided on the upper flat cover 119. The first access opening 1151 corresponds to the filter plate assembly 130 and is used for replacing the filter plate assembly. The first access opening is provided at a location on the upper flat cover corresponding to the filter plate assembly, through which the filter plate assembly can be removed for cleaning and replacement of the filter screen. In the present invention, the filter plate assembly is installed within the settling chamber, and the first access opening is provided at a corresponding location on the upper flat cover. Through this access opening, the entire filter plate assembly can be removed from the settling chamber for maintenance.

[0070] In one embodiment, a first drain port 1141 is provided on the lower head 118 of the first sedimentation area 1111. A valve may be provided on the first drain port 1141. A second drain port 1142 is provided on the lower head 118 of the second sedimentation area 1112. A valve may be provided on the second drain port 1142. The utility model provides two drain ports at the bottom head position, respectively, and opens the pipeline valve regularly or irregularly to discharge the liquid into the downstream equipment for processing the discharged liquid. Two drain ports are provided on the bottom head, and the sediment in the two areas can be discharged separately. An automatic valve may be installed on the discharge pipeline to automatically drain the water according to the production time.

[0071] In one embodiment, a second inspection port 1152 is provided on the sidewall of the second settling zone 1112, and is tilted upward. This second inspection port, installed on the cylindrical portion of the settling chamber, allows for inspection of the interior during equipment shutdown. This second inspection port allows for inspection of the filter plate assembly and the rotating nozzle of the flushing assembly.

[0072] In one embodiment, a liquid outlet 116 is provided on the side wall of the second settling area 1112. Specifically, the liquid outlet 116 is located below the second inspection port 1152 and above the rotating nozzle 142 of the flushing assembly.

[0073] Example 2

[0074] Please refer to Figure 6 The wastewater treatment device 10 includes a dry-type collection device 200, a wet-type collection device 300, a wastewater sedimentation device 100 of any one of Embodiment 1, and a wastewater boiling device 400 connected in sequence.

[0075] Working process of the wastewater treatment device: During the production of vegetable oil using the leaching method, the mixed gas consisting of solvent gas, water vapor and meal evaporated from the DTDC degassing machine is separated from the gas and meal by the dry capture device on the top, which can separate the meal into a certain particle size.

[0076] The mixed gas then enters the wet capture device for secondary capture of meal powder. This process can effectively capture fine meal powder in the airflow. The wet collector uses circulating hot water to spray the airflow, and the resulting mixture of water and meal powder flows through a pipeline to the wastewater sedimentation tank.

[0077] The liquid passes through the filter screen on the filter plate assembly to intercept the meal of corresponding particle size, where it is allowed to settle, and then discharged through the liquid outlet into the downstream wastewater cooking device for treatment.

[0078] A wastewater sedimentation device is installed between the wet collector and the wastewater cooking tank, which can effectively separate the meal particles of corresponding particle sizes, prevent the meal particles in the wastewater cooking tank from agglomerating and clogging the pipeline, reduce the residual solvent content in the discharged water, recover the solvent for reuse, and improve the economic value.

Claims

1. Wastewater sedimentation device, characterized in that: include: sedimentation cavity; A filter plate assembly is arranged in the middle of the sedimentation chamber to separate the sedimentation chamber into a first sedimentation area and a second sedimentation area; A liquid inlet pipe assembly is provided in the first sedimentation zone, and a liquid outlet of the liquid inlet pipe assembly is located at the lower part of the first sedimentation zone.

2. The wastewater sedimentation device according to claim 1, characterized in that: The liquid inlet pipe assembly is J-shaped, including a straight pipe and a bent pipe. The bent pipe is arranged at the lower end of the straight pipe, and the liquid outlet of the bent pipe faces the cavity wall of the first sedimentation zone.

3. The wastewater sedimentation device according to claim 2, characterized in that: The liquid outlet of the curved pipe is arranged obliquely.

4. The wastewater sedimentation device according to claim 2, characterized in that: The liquid outlet of the bent pipe is located below the liquid level of the sedimentation chamber.

5. The wastewater sedimentation device according to claim 1, characterized in that: The filter plate assembly is plug-connected to the inner wall of the sedimentation chamber; the filter plate assembly is vertically and eccentrically arranged.

6. The wastewater sedimentation device according to claim 5, characterized in that: The filter plate assembly comprises: A filter frame, the filter frame is matched with the inner wall of the sedimentation chamber; a cross-shaped support frame is provided on the filter frame; The filter screen is arranged on the filter frame and the cross-shaped support frame through a pressing plate and fasteners.

7. The wastewater sedimentation device according to claim 6, characterized in that: A fixed frame is provided on the inner wall of the sedimentation chamber, and the fixed frame cooperates with the inner wall of the sedimentation chamber; The filter frame is inserted into the fixing frame.

8. The wastewater sedimentation device according to claim 7, characterized in that: A sealing member is provided between the filter frame and the fixing frame.

9. The wastewater sedimentation device according to claim 1, characterized in that: A flushing assembly is provided in the second settling zone for back flushing the filter plate assembly.

10. The wastewater sedimentation device according to claim 9, characterized in that: The flushing assembly comprises a flushing pipe, and a rotating nozzle is arranged at the bottom of the flushing pipe.

11. The wastewater sedimentation device according to claim 10, characterized in that: The sedimentation chamber includes a cylindrical portion and a lower head, and an upper flat cover is provided on the top of the cylindrical portion; The upper flat cover is provided with an exhaust port, a first inspection port, and the liquid inlet pipe assembly; the first inspection port corresponds to the filter plate assembly and is used for replacing the filter plate assembly; The flushing assembly is detachably arranged on the upper flat cover.

12. The wastewater sedimentation device according to claim 11, characterized in that: A first liquid drain port is provided on the lower cover of the first sedimentation zone; A second liquid drain port is provided on the lower cover of the second sedimentation zone.

13. The wastewater sedimentation device according to claim 11, characterized in that: A second inspection port is provided on the side wall of the second settling zone, and the second inspection port is arranged to be inclined upward for inspecting the filter plate assembly and the flushing assembly; A liquid outlet is provided on the side wall of the second settling zone, and the liquid outlet is located below the second inspection port; The rotating nozzle is located below the liquid outlet.

14. A wastewater treatment device, characterized in that: The invention comprises a dry-type collecting device, a wet-type collecting device and a wastewater boiling device which are connected in sequence, wherein the wastewater settling device according to any one of claims 1 to 13 is arranged between the wet-type collecting device and the wastewater boiling device.

Images