An oily wastewater filtration device

Abstract

This utility model discloses an oily wastewater filtration device, relating to the technical field of oil-water filtration devices. It includes an oil-water filtration tank composed of a filter, an oil baffle, a flow-blocking plate, an inlet, an outlet, and a residue basket, and a heating assembly. The heating assembly includes a channel unit and a flow-guiding unit. The flow-guiding unit guides the flow trajectory of the heat exchange medium, ensuring sufficient contact between the heat exchange medium and the first heat exchange channel, the second heat exchange channel, and the side of the filter tank. By setting up the heating assembly, the heat exchange medium enters the first heat exchange chamber and flows along the first and second heat exchange channels to the second heat exchange chamber. During this process, the heat exchange medium exchanges heat with the wastewater inside the filter tank through the side wall, oil baffle, and flow-blocking plate, thereby heating the wastewater. This effectively prevents the oil from solidifying at low temperatures, thus affecting the oil-water separation effect and allowing the oil-water filtration tank to operate normally even in cold weather.

Description

Technical Field

[0001] This utility model relates to the technical field of oil-water filtration devices, specifically an oily wastewater filtration device. Background Technology

[0002] The kitchen oil-water filtration tank (also known as a grease trap or oil-water separator) is a core piece of equipment in the catering industry for treating oily wastewater. Its core principle is based on physical separation, mainly utilizing the density and flowability differences between oil, water, and solid impurities for graded separation.

[0003] The density of grease (especially animal and vegetable oils) in restaurant wastewater is usually less than that of water (0.9~0.95 g / cm³). 3 vs 1.0 g / cm 3 After the wastewater enters the tank, the flow rate slows down. Under the action of gravity, the oil gradually floats to the surface of the water, forming an oil layer. Solid impurities with a density greater than water, such as food residue, sink to the bottom of the tank to form a sludge layer. The middle layer is the wastewater after preliminary separation.

[0004] When existing kitchen oil-water filtration tanks are in use, grease (especially animal fat) will solidify into a solid or semi-solid state at low temperatures. The solidified grease cannot float effectively, but instead remains suspended or deposited in the equipment in the form of lumps or paste, resulting in ineffective oil-water separation. Based on this, an oily wastewater filtration device is provided. Utility Model Content

[0005] The purpose of this invention is to provide an oily wastewater filtration device in order to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oily wastewater filtration device, comprising an oil-water filtration tank composed of a filter pool, an oil baffle plate, a flow barrier plate, an inlet, an outlet, and a residue basket. Two sets of oil baffle plates and flow barrier plates are provided, with the two sets of oil baffle plates fixed along a straight line inside the filter pool. The two sets of oil baffle plates and flow barrier plates divide the interior of the filter pool into a sedimentation tank, an oil separation tank, and a drainage tank. The residue basket is placed inside the sedimentation tank. The inlet and outlet are fixed at both ends of the filter pool and communicate with the inner cavities of the sedimentation tank and the drainage tank, respectively. A first heat exchange channel and a second heat exchange channel are respectively opened inside the oil baffle plate and the flow barrier plate. The first heat exchange channel and the second heat exchange channel extend to both sides of the outer surface of the filter pool. Heating components are provided on both sides of the outer surface of the filter pool. The heating components cooperate with the first heat exchange channel and the second heat exchange channel to provide a flow channel for the heat exchange medium, thereby achieving the heating operation of the wastewater inside the filter pool.

[0007] The heating assembly includes a channel unit and a flow guiding unit;

[0008] The channel unit provides a channel for the flow of the heat exchange medium;

[0009] The flow guiding unit is used to guide the flow trajectory of the heat exchange medium and to achieve full contact between the heat exchange medium and the first heat exchange channel, the second heat exchange channel, and the side of the filter.

[0010] As a further embodiment of this utility model: the channel unit includes a first heat exchange box, a second heat exchange box, an inlet pipe, and an outlet pipe;

[0011] The first heat exchange box and the second heat exchange box are respectively fixed on both sides of the outer wall of the filter tank, and the first heat exchange channel and the second heat exchange channel are connected to the first heat exchange box and the second heat exchange box. The channel formed by the first heat exchange box, the second heat exchange box, the first heat exchange channel and the second heat exchange channel is used to provide a flow channel for the heat exchange medium.

[0012] The liquid inlet pipe is fixed to the top of one end of the first heat exchange box, and the liquid outlet pipe is fixed to the bottom of the other end of the first heat exchange box. The liquid inlet pipe and the liquid outlet pipe are connected to the inner cavity of the first heat exchange box.

[0013] As a further improvement of this utility model: the flow guiding unit includes a first U-shaped baffle;

[0014] The first U-shaped partition is located inside the first heat exchange box and fixed at the openings of the first heat exchange channel and the second heat exchange channel. The other side of the first U-shaped partition is fixedly connected to the side of the first heat exchange box.

[0015] The top end of the first U-shaped partition near the liquid inlet pipe is fixedly connected to the top of the inner wall of the first heat exchanger, and the top end of the first U-shaped partition near the liquid outlet pipe has a notch formed.

[0016] The flow is guided by four first U-shaped baffles to ensure that the heat exchange medium inside the first heat exchange box can fully contact the outer wall side of the filter pool in the middle area of ​​the first heat exchange channel and the second heat exchange channel.

[0017] As a further embodiment of this utility model: the flow guiding unit further includes a second U-shaped flow guiding plate, an inverted U-shaped flow guiding plate, and an inverted L-shaped flow guiding plate;

[0018] The second U-shaped guide plate, the inverted U-shaped guide plate, and the inverted L-shaped guide plate are distributed inside the second heat exchange box. The second U-shaped guide plate is fixed to the opening of the first heat exchange channel near the sedimentation tank, the inverted U-shaped guide plate is fixed to the opening of the first heat exchange channel near the drainage tank, and the inverted L-shaped guide plate is fixed to the openings of the two second heat exchange channels.

[0019] The other side of the second U-shaped guide plate, the inverted U-shaped guide plate, and the inverted L-shaped guide plate is fixed to the side of the second heat exchange box. The top of the second U-shaped guide plate has a notch at the end near the sedimentation tank, and the bottom of the inverted U-shaped guide plate has a notch at the end near the drainage tank.

[0020] The flow is guided by the second U-shaped guide plate, the inverted U-shaped guide plate, and the inverted L-shaped guide plate to ensure that the heat exchange medium inside the second heat exchange box can fully contact the outer wall side of the filter tank in the middle area of ​​the first heat exchange channel and the second heat exchange channel.

[0021] As a further embodiment of this utility model: the top of the oil baffle is flush with the top of the filter tank and the bottom does not contact the bottom of the filter tank; the top of the flow barrier is lower than the top of the filter tank and the bottom is welded and fixed to the bottom of the filter tank.

[0022] The horizontal height of the outlet is lower than that of the inlet.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] By setting up a heating component, the heat exchange medium enters the first heat exchange box and flows along the first and second heat exchange channels to the second heat exchange box. During this process, the heat exchange medium exchanges heat with the wastewater inside the filter tank through the filter tank sidewall, oil baffle, and resistance plate, thereby heating the wastewater. This effectively prevents the oil from solidifying at low temperatures, which would affect the oil-water separation effect, and allows the oil-water filter tank to be used normally even in cold weather. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure of the first heat exchanger of this utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the second heat exchanger box of this utility model.

[0029] In the diagram: 1. Oil-water filtration tank; 101. Filter tank; 102. Oil baffle; 103. Baffle plate; 104. Sedimentation tank; 105. Oil separator; 106. Drainage tank; 107. Inlet; 108. Outlet; 109. Residue basket; 110. First heat exchange channel; 111. Second heat exchange channel; 2. Heating assembly; 201. First heat exchange box; 202. Second heat exchange box; 203. Liquid inlet pipe; 204. Liquid outlet pipe; 205. First U-shaped baffle; 206. Second U-shaped guide plate; 207. Inverted U-shaped guide plate; 208. Inverted L-shaped guide plate. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-4 In this embodiment of the present invention, an oily wastewater filtration device includes an oil-water filtration tank 1 consisting of a filter tank 101, an oil baffle plate 102, a flow barrier plate 103, an inlet 107, an outlet 108, and a residue basket 109. Two sets of oil baffle plates 102 and flow barrier plates 103 are provided, with the two sets of oil baffle plates 102 fixed along a straight line inside the filter tank 101. The two sets of oil baffle plates 102 and flow barrier plates 103 divide the interior of the filter tank 101 into a sedimentation tank 104 and a partition. Oil tank 105, drainage tank 106, and residue basket 109 are placed inside sedimentation tank 104. Inlet 107 and outlet 108 are fixed to both ends of filter tank 101 and are respectively connected to the inner cavity of sedimentation tank 104 and drainage tank 106. The oil baffle 102 and flow baffle 103 are respectively provided with a first heat exchange channel 110 and a second heat exchange channel 111. The first heat exchange channel 110 and the second heat exchange channel 111 extend to the outer sides of filter tank 101.

[0032] The top of the oil baffle 102 is flush with the top of the filter tank 101 and the bottom does not contact the bottom of the filter tank 101. The top of the flow baffle 103 is lower than the top of the filter tank 101 and the bottom is welded and fixed to the bottom of the filter tank 101.

[0033] The horizontal height of the outlet 108 is lower than the horizontal height of the inlet 107;

[0034] Heating components 2 are provided on both sides of the filter tank 101. The heating components 2 cooperate with the first heat exchange channel 110 and the second heat exchange channel 111 to provide a flow channel for the heat exchange medium and to realize the heating operation of the wastewater inside the filter tank 101. The heating components 2 include a channel unit and a flow guiding unit. The channel unit provides a channel for the flow of the heat exchange medium, and the flow guiding unit guides the flow trajectory of the heat exchange medium to achieve full contact between the heat exchange medium and the first heat exchange channel 110, the second heat exchange channel 111, and the side of the filter tank 101.

[0035] The channel unit includes a first heat exchange box 201, a second heat exchange box 202, an inlet pipe 203, and an outlet pipe 204;

[0036] The first heat exchange box 201 and the second heat exchange box 202 are respectively fixed on both sides of the outer wall of the filter tank 101, and the first heat exchange channel 110 and the second heat exchange channel 111 are connected to the first heat exchange box 201 and the second heat exchange box 202. The channel formed by the first heat exchange box 201, the second heat exchange box 202, the first heat exchange channel 110, and the second heat exchange channel 111 is used to provide a flow channel for the heat exchange medium.

[0037] The liquid inlet pipe 203 is fixed to the top of one end of the first heat exchange box 201, and the liquid outlet pipe 204 is fixed to the bottom of the other end of the first heat exchange box 201. The liquid inlet pipe 203 and the liquid outlet pipe 204 are connected to the inner cavity of the first heat exchange box 201.

[0038] In this embodiment, the operating principle of this oil-water filtration tank 1 is as follows:

[0039] The catering wastewater enters the sedimentation tank 104 through the inlet. The residue in the wastewater settles in the residue basket 109. The wastewater that has been filtered out flows along the "S"-shaped channel formed by two sets of oil baffles 102 and resistance plates 103. During this process, the grease in the wastewater gradually floats to the surface under the action of gravity, forming an oil layer, thereby achieving oil-water separation. The wastewater that has been separated from the grease is discharged through the outlet 108. (It should be noted that its operating principle is the same as that of the kitchen oil-water filtration tanks on the market. Therefore, it will not be described in detail here.)

[0040] When used in cold winter weather, the grease will solidify into a solid or semi-solid state at low temperatures. Therefore, the heating component 2 can be connected to the circulation pipeline of the heat exchange medium (it should be noted that the inlet pipe 203 and the outlet pipe 202 are connected to the circulation pipeline of the heat exchange medium). The heat exchange medium enters the first heat exchange box 201 through the inlet pipe 203 and flows along the first heat exchange channel 110 and the second heat exchange channel 111 to the second heat exchange box 202. During this process, the heat exchange medium exchanges heat with the wastewater inside the filter tank 101 through the side wall of the filter tank 101, the oil baffle plate 102, the resistance plate 103, and so on, thereby heating the wastewater. This effectively prevents the grease from solidifying at low temperatures and affecting the oil-water separation effect, so that the oil-water filter tank 1 can be used normally in cold weather.

[0041] Please refer to this carefully. Figures 3-4 The flow guiding unit includes a first U-shaped baffle 205, a second U-shaped flow guiding plate 206, an inverted U-shaped flow guiding plate 207, and an inverted L-shaped flow guiding plate 208;

[0042] The first U-shaped partition 205 is located inside the first heat exchange box 201 and is fixed at the opening of the first heat exchange channel 110 and the second heat exchange channel 111. The other side of the first U-shaped partition 205 is fixedly connected to the side of the first heat exchange box 201.

[0043] The top end of the first U-shaped partition 205 near the liquid inlet pipe 203 is fixedly connected to the top of the inner wall of the first heat exchange box 201, and the top end of the first U-shaped partition 205 near the liquid outlet pipe 204 has a notch formed.

[0044] The flow is guided by four first U-shaped baffles 205 to ensure that the heat exchange medium inside the first heat exchange box 201 can fully contact the outer wall side of the filter pool 101 in the middle area of ​​the first heat exchange channel 110 and the second heat exchange channel 111.

[0045] The second U-shaped guide plate 206, the inverted U-shaped guide plate 207, and the inverted L-shaped guide plate 208 are distributed inside the second heat exchange box 202. The second U-shaped guide plate 206 is fixed to the opening of the first heat exchange channel 110 near the sedimentation tank 104, the inverted U-shaped guide plate 207 is fixed to the opening of the first heat exchange channel 110 near the drainage tank 106, and the inverted L-shaped guide plate 208 is fixed to the openings of the two second heat exchange channels 111.

[0046] The other side of the second U-shaped guide plate 206, the inverted U-shaped guide plate 207, and the inverted L-shaped guide plate 208 is fixed to the side of the second heat exchange box 202. The top of the second U-shaped guide plate 206 has a notch at the end near the sedimentation tank 104, and the bottom of the inverted U-shaped guide plate 207 has a notch at the end near the drainage tank 106.

[0047] The flow is guided by the second U-shaped guide plate 206, the inverted U-shaped guide plate 207, and the inverted L-shaped guide plate 208 to ensure that the heat exchange medium inside the second heat exchange box 202 can fully contact the outer wall side of the filter pool 101 in the middle area of ​​the first heat exchange channel 110 and the second heat exchange channel 111.

[0048] In this embodiment: the structural arrangement of the first U-shaped baffle 205, the second U-shaped guide plate 206, the inverted U-shaped guide plate 207, and the inverted L-shaped guide plate 208 allows the heat exchange medium to circulate between the first heat exchange box 201 and the second heat exchange box 202, and the flow trajectory of the heat exchange medium inside the first heat exchange box 201 and the second heat exchange box 202 can fully cover the sides of the filter tank 101 (e.g.: Figure 3 / 4 The arrows indicate the direction of heat exchange medium flow, effectively avoiding dead zones and ensuring good heat exchange performance.

[0049] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An oily wastewater filtration device, comprising an oil-water filtration tank (1) consisting of a filter tank (101), an oil baffle plate (102), a flow barrier plate (103), an inlet (107), an outlet (108), and a residue basket (109), wherein two sets of the oil baffle plate (102) and the flow barrier plate (103) are provided, the two sets of the oil baffle plate (102) are fixedly arranged in a straight line on the inner side of the filter tank (101), and the two sets of the oil baffle plate (102) and the flow barrier plate (103) divide the interior of the filter tank (101) into a sedimentation tank (104), an oil separation tank (105), and a drainage tank (106), wherein the residue basket (109) is placed inside the sedimentation tank (104), and the inlet (107) and the outlet (108) are respectively fixed at both ends of the filter tank (101) and respectively communicate with the inner cavities of the sedimentation tank (104) and the drainage tank (106), characterized in that, The oil baffle (102) and the flow baffle (103) are respectively provided with a first heat exchange channel (110) and a second heat exchange channel (111). The first heat exchange channel (110) and the second heat exchange channel (111) extend to the outer sides of the filter (101). Heating components (2) are provided on the outer sides of the filter (101). The heating components (2) cooperate with the first heat exchange channel (110) and the second heat exchange channel (111) to provide a flow channel for the heat exchange medium and to realize the heating operation of the wastewater inside the filter (101). The heating component (2) includes a channel unit and a flow guiding unit; The channel unit provides a channel for the flow of the heat exchange medium; The flow guiding unit is used to guide the flow trajectory of the heat exchange medium and to achieve full contact between the heat exchange medium and the sides of the first heat exchange channel (110), the second heat exchange channel (111), and the filter (101).

2. An oil-containing wastewater filtering device according to claim 1, characterized in that The channel unit includes a first heat exchange box (201), a second heat exchange box (202), an inlet pipe (203), and an outlet pipe (204). The first heat exchange box (201) and the second heat exchange box (202) are respectively fixed on both sides of the outer wall of the filter (101), and the first heat exchange channel (110) and the second heat exchange channel (111) are connected to the first heat exchange box (201) and the second heat exchange box (202). The channel formed by the first heat exchange box (201), the second heat exchange box (202), the first heat exchange channel (110), and the second heat exchange channel (111) is used to provide a flow channel for the heat exchange medium. The liquid inlet pipe (203) is fixed to the top of one end of the first heat exchange box (201), and the liquid outlet pipe (204) is fixed to the bottom of the other end of the first heat exchange box (201). The liquid inlet pipe (203) and the liquid outlet pipe (204) are connected to the inner cavity of the first heat exchange box (201).

3. An oil-containing wastewater filtering device according to claim 2, characterized in that The flow guiding unit includes a first U-shaped baffle (205); The first U-shaped partition (205) is located inside the first heat exchange box (201) and fixed at the opening of the first heat exchange channel (110) and the second heat exchange channel (111). The other side of the first U-shaped partition (205) is fixedly connected to the side of the first heat exchange box (201). The top end of the first U-shaped partition (205) near the liquid inlet pipe (203) is fixedly connected to the top of the inner wall of the first heat exchange box (201), and the top end of the first U-shaped partition (205) near the liquid outlet pipe (204) has a notch formed; The flow is guided by four first U-shaped baffles (205) to ensure that the heat exchange medium inside the first heat exchange box (201) can fully contact the outer wall side of the filter pool (101) in the middle area of ​​the first heat exchange channel (110) and the second heat exchange channel (111).

4. An oil-containing wastewater filtering device according to claim 2, characterized in that The flow guiding unit also includes a second U-shaped flow guiding plate (206), an inverted U-shaped flow guiding plate (207), and an inverted L-shaped flow guiding plate (208). The second U-shaped guide plate (206), the inverted U-shaped guide plate (207), and the inverted L-shaped guide plate (208) are distributed inside the second heat exchange box (202). The second U-shaped guide plate (206) is fixed to the opening of the first heat exchange channel (110) near the sedimentation tank (104), the inverted U-shaped guide plate (207) is fixed to the opening of the first heat exchange channel (110) near the drainage tank (106), and the inverted L-shaped guide plate (208) is fixed to the opening of the two second heat exchange channels (111). The other side of the second U-shaped guide plate (206), the inverted U-shaped guide plate (207), and the inverted L-shaped guide plate (208) is fixed to the side of the second heat exchange box (202). The top of the second U-shaped guide plate (206) is provided with a notch at one end near the sedimentation tank (104), and the bottom of the inverted U-shaped guide plate (207) is provided with a notch at one end near the drainage tank (106). The flow is guided by the second U-shaped guide plate (206), the inverted U-shaped guide plate (207), and the inverted L-shaped guide plate (208) to ensure that the heat exchange medium inside the second heat exchange box (202) can fully contact the outer wall side of the filter pool (101) in the middle area of ​​the first heat exchange channel (110) and the second heat exchange channel (111).

5. An oil-containing wastewater filtering device according to claim 1, characterized in that, The top of the oil baffle (102) is flush with the top of the filter tank (101), and the bottom is not in contact with the bottom of the filter tank (101). The top of the flow barrier (103) is lower than the top of the filter tank (101), and the bottom is welded and fixed to the bottom of the filter tank (101). The horizontal height of the outlet (108) is lower than that of the inlet (107).

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