A rapid super gravity field kitchen oil-water separation system

Abstract

The application discloses a rapid supergravity field kitchen oil-water separation system, which comprises a front coarse residue filtration separation unit, a solid-liquid deep separation unit, a multi-stage oil-water fine filtration unit and an oil-water deep separation unit. The kitchen garbage is separated from large-particle solid particles in the front coarse residue filtration separation unit. The kitchen oil-water is separated from small-particle solid particles through a Y-shaped filter. The kitchen oil-water is separated from suspended matters in water through a solid-liquid cyclone separator in the solid-liquid deep separation unit. The oil and water are deeply separated through cyclone oil-water separators with different precision in the multi-stage oil-water fine filtration unit. The cyclone oil-water separators are provided with cyclone guide vanes, which are used for improving the cyclone field intensity and the oil-water separation efficiency. Finally, the oil and water are deeply separated in the oil-water deep separation unit. The system is composed of multiple units, and the oil-water separation speed and the oil-water separation efficiency are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil-water separation, in particular to a rapid supergravity field kitchen oil-water separation system. BACKGROUND

[0002] As a populous country, China has a huge demand for the catering industry, and a large amount of kitchen waste is generated daily, which will seriously affect people's daily life if not handled in time. The existing oil-water separation equipment mostly uses the principle of pure gravity (density difference) to work, that is, the substances with larger specific gravity in the sewage sink to the bottom of the separator, and the substances with smaller specific gravity (such as animal fat) float to the water surface. The cleaned sewage is discharged into the sewer through the drain. The product produced by relying on the principle of pure gravity field has slow separation speed and low efficiency, and when multiple kitchen waste discharge ports discharge kitchen waste at the same time, the system load may be exceeded, resulting in that the oil phase, water phase and waste residue that are not completely separated are discharged into the collection barrel, polluting the separated liquid, and the system stability is poor.

[0003] Therefore, it is necessary to develop a more efficient kitchen oil-water separation system to greatly improve the kitchen waste treatment speed, efficiency and oil-water separation system stability. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides a rapid supergravity field kitchen oil-water separation system, which comprises a pre-rough residue filtration separation unit, a solid-liquid deep separation unit, a multi-stage oil-water fine filtration unit and an oil-water deep separation unit, thereby forming a rapid supergravity field formed by a centrifugal field, a gravity field and an electric field, which can realize deep dehydration and effectively improve the oil-water separation speed and high oil-water separation efficiency.

[0005] The technical scheme adopted by the present application is as follows:

[0006] A rapid supergravity field kitchen oil-water separation system, comprising a pre-rough residue filtration separation unit, a solid-liquid deep separation unit, a multi-stage oil-water fine filtration unit and an oil-water deep separation unit.

[0007] The pre-rough residue filtration separation unit comprises a pre-rough residue filter, a Y-type filter, a stirrer and a pre-rough residue filter screen built-in the pre-rough residue filter; under the action of the stirrer, the centrifugal effect is used to realize the preliminary separation of solid waste-liquid waste; the pre-rough residue filter screen and the inner wall surface of the pre-rough residue filter cylinder are separated to form a pre-rough residue filter liquid storage cavity, and the pre-rough residue filter liquid storage cavity inputs the preliminarily filtered liquid waste into the Y-type filter through a pre-rough residue filter liquid discharge pipeline;

[0008] The solid-liquid deep separation unit comprises a solid-liquid cyclone separator and a booster pump arranged on a connecting pipeline between the Y-type filter and the solid-liquid cyclone separator, which pumps the liquid waste filtered by the Y-type filter into the solid-liquid cyclone separator, and the solid-liquid cyclone separator performs solid-liquid cyclone separation on the liquid waste again.

[0009] The multi-stage oil-water fine filtration unit comprises a first-stage oil-water cyclone separator and a second-stage oil-water cyclone separator, the first-stage oil-water cyclone separator adopts a double-cone cyclone, and the second-stage oil-water cyclone separator adopts a single-cone cyclone; the inlet end of the first-stage oil-water cyclone separator is connected with the liquid-phase outlet of the solid-liquid cyclone separator; the oil-phase outlet of the first-stage oil-water cyclone separator is connected with the oil-water deep separation unit, and the water-phase outlet of the first-stage oil-water cyclone separator is connected with the inlet end of the second-stage oil-water cyclone separator or a water collecting barrel; the oil-phase outlet of the second-stage oil-water cyclone separator is connected with the oil-water deep separation unit, and the water-phase outlet of the second-stage oil-water cyclone separator is connected with the water collecting barrel.

[0010] The oil-water deep separation unit comprises a gravity separator / electric dehydrator, which is internally provided with an electrode and purifies grease by using an electric field.

[0011] Further, the solid-liquid cyclone separator comprises a solid-liquid cyclone separator cylindrical section, a solid-liquid cyclone separator conical section and a solid-liquid cyclone separator underflow pipeline connected in sequence and arranged along the same center line; the side wall of the solid-liquid cyclone separator cylindrical section is connected with a solid-liquid cyclone separator inlet pipeline, one end of the solid-liquid cyclone separator inlet pipeline is arranged along the tangential direction of the solid-liquid cyclone separator cylindrical section, and the other end is connected with the outlet pipeline of the booster pump; a solid-liquid cyclone separator overflow pipeline is arranged at the end of the solid-liquid cyclone separator cylindrical section, one end of the solid-liquid cyclone separator overflow pipeline extends to the inside of the solid-liquid cyclone separator cylindrical section and is arranged along the same center line, and the other end is located outside the solid-liquid cyclone separator cylindrical section.

[0012] Further, the first-stage oil-water cyclone separator comprises a cyclonic oil-water separator cylindrical section, a cyclonic oil-water separator short-cone pipeline, a cyclonic oil-water separator long-cone pipeline and a cyclonic oil-water separator underflow pipeline connected in sequence and arranged along the same center line; a cyclonic oil-water separator inlet pipeline is connected with the side wall of the cyclonic oil-water separator cylindrical section, one end of the cyclonic oil-water separator inlet pipeline is arranged along the tangential direction of the cyclonic oil-water separator cylindrical section, and the other end is connected with the solid-liquid cyclone separator overflow pipeline; a cyclonic conductor is arranged in the cyclonic oil-water separator cylindrical section along the axial direction, and a cyclonic oil-water separator rotating guide vane is arranged on the outer wall surface of the cyclonic conductor, which divides the flow channel between the cyclonic conductor and the inner wall of the cyclonic oil-water separator cylindrical section into a helical flow channel.

[0013] Further, a gravity separator / electric dehydrator baffle is arranged on the inner upper portion of the cavity near the side of the inlet pipeline of the gravity separator / electric dehydrator, the gravity separator / electric dehydrator baffle separates the connection between the inlet pipeline and the gravity separator / electric dehydrator baffle into a gravity separator / electric dehydrator buffer cavity; one end of the gravity separator / electric dehydrator is provided with a gravity separator / electric dehydrator purified grease discharge pipeline; a gravity separator / electric dehydrator oil-water weir plate is arranged on the inner bottom portion of the cavity near the side of the gravity separator / electric dehydrator purified grease discharge pipeline, the gravity separator / electric dehydrator oil-water weir plate separates the connection between the gravity separator / electric dehydrator purified grease discharge pipeline and the gravity separator / electric dehydrator oil-water weir plate into a gravity separator / electric dehydrator oil storage cavity; the communication area between the gravity separator / electric dehydrator baffle and the gravity separator / electric dehydrator oil-water weir plate is a gravity separator / electric dehydrator oil-water separation cavity, and an electrode is arranged in the gravity separator / electric dehydrator oil-water separation cavity.

[0014] Further, the electrode is composed of a plurality of "V"-shaped electrode plates, adjacent "V"-shaped electrode plates are arranged alternately in positive and negative poles; the opening side of the "V"-shaped electrode plate faces the liquid inlet end, and the tip end of the "V"-shaped electrode plate faces the liquid outlet end.

[0015] Further, a plurality of rectangular holes are arranged in an array on the "V"-shaped electrode plate, and the size of the rectangular holes gradually decreases from bottom to top.

[0016] Further, the solid-liquid cyclone separator, the first-stage oil-water cyclone separator and the second-stage oil-water cyclone separator adopt a single or multiple parallel forms to meet the requirements of different processing speeds.

[0017] Further, the preposed coarse residue filter separation unit, the solid-liquid depth separation unit, the multi-stage oil-water fine filtration unit and the oil-water depth separation unit are equipped with heaters to avoid solidification of the kitchen oil-water at low temperature.

[0018] Further, the preposed coarse residue filter screen is equipped with a preposed coarse residue filter backwashing pipeline, and the preposed coarse residue filter backwashing pipeline pumps in high-pressure water to wash the preposed coarse residue filter screen.

[0019] Further, the stirrer comprises three or more secondary stirring shafts, and each secondary stirring shaft is provided with four paddles in the axial direction.

[0020] The present application has the following beneficial effects:

[0021] 1. The preposed coarse residue filter can separate the kitchen oil-water and large-particle solid particles in the kitchen waste.

[0022] 2、The preposed coarse residue filter in the application carries the stirrer, heater and temperature measuring element which jointly realize the dropping of solid particle adsorbed oil and grease and avoid the solidification of animal oil and grease.

[0023] 3、The Y-shaped filter in the application can remove small particle size solid particles in kitchen oil and water.

[0024] 4、The solid-liquid cyclone separator in the application can remove water suspended matter in kitchen oil and water.

[0025] 5、The two-stage cyclone oil and water separator in the application greatly accelerates the oil and water separation speed by using the super gravity field generated by the cyclone field, and improves the kitchen oil and water treatment efficiency.

[0026] 6、The gravity separator / electric dehydrator in the application can greatly reduce the water content in purified oil and grease by deeply dehydrating kitchen oil and water.

[0027] 7、The fine filter in the application can further filter the underflow of the oil and water cyclone separator and the waste water separated by the gravity separator / electric dehydrator, so that the discharged waste water can reach the discharge standard.

[0028] 8、The pressure gauge, flow meter, temperature measuring element and other instruments in the application can output electric signals, and the valves, motors and heaters can be controlled by electronic components, so that the automatic control of the system can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a front view of a rapid super gravity field kitchen oil and water separation system.

[0030] Figure 2 is a top view of a rapid super gravity field kitchen oil and water separation system.

[0031] Figure 3 is an axial side view of a rapid super gravity field kitchen oil and water separation system.

[0032] Figure 4 is a front view of a preposed coarse residue filter structure.

[0033] Figure 5 is a top view of a preposed coarse residue filter structure.

[0034] Figure 6 is a sectional view of a preposed coarse residue filter structure.

[0035] Figure 7 is a front view of a solid-liquid cyclone separator.

[0036] Figure 8 is a sectional view of a solid-liquid cyclone separator.

[0037] Figure 9is a primary cyclone oil water separator front view.

[0038] Figure 10 is a primary cyclone oil water separator cross section view.

[0039] Figure 11 is a cyclone vane configuration view.

[0040] Figure 12 is a secondary cyclone oil water separator front view.

[0041] Figure 13 is a gravity separator / electric dehydrator top partial cross section view.

[0042] Figure 14 is a gravity separator / electric dehydrator front cross section view.

[0043] Figure 15 is a gravity separator / electric dehydrator left cross section view.

[0044] Figure 16 is a system front view for large throughput.

[0045] Figure 17 is a system top view for large throughput.

[0046] In the figure: 110, pre-coarse residue filter, 111, pre-coarse residue filter inlet pipe, 112, pre-coarse residue filter liquid discharge pipe, 113, pre-coarse residue filter backwash pipe, 114, pre-coarse residue filter residue discharge pipe, 115, pre-coarse residue filter blowdown pipe, 116, pre-coarse residue filter flow baffle, 117, pre-coarse residue filter screen, 118, heater, 119, temperature measuring element, 120, agitator, 121, flip plate liquid level meter, 122, pre-coarse residue filter cover plate, 123, pre-coarse residue filter buffer cavity, 124, pre-coarse residue filter solid-liquid separation cavity, 125, pre-coarse residue filter liquid storage cavity, 131, valve A, 132, valve B, 133, valve C, 134, valve D, 135, valve E, 141, pressure gauge A, 142, pressure gauge B, 151, flow meter A, 161, residue discharge barrel, 171, Y-type filter, 210, booster pump, 220, solid-liquid cyclone separator, 221, solid-liquid cyclone separator cylindrical section, 222, solid-liquid cyclone separator inlet pipe, 223, solid-liquid cyclone separator overflow pipe, 224, solid-liquid cyclone separator underflow pipe, 225, solid-liquid cyclone separator conical section, 231, valve F, 232, valve G, 233, valve H, 234, valve I, 235, valve J, 241, pressure gauge C, 242, pressure gauge D, 243, pressure gauge E, 251, flow meter B, 252, flow meter C, 253, flow meter D, 261, collection barrel, 310, primary oil-water cyclone separator, 311, cyclone oil-water separator cylindrical section, 312, cyclone oil-water separator short conical pipe, 313, cyclone oil-water separator long conical pipe, 314, cyclone oil-water separator underflow pipe, 315, cyclone oil-water separator inlet pipe, 316, cyclone oil-water separator outer overflow pipe, 317, cyclone oil-water separator rotating vane, 318, cyclone oil-water separator inner overflow pipe, 320, secondary oil-water cyclone separator, 331, valve K, 332, valve L, 333, valve M, 334, valve N, 335, valve O, 341, pressure gauge F, 342, pressure gauge G, 343, pressure gauge H, 344, pressure gauge I, 345, pressure gauge J, 351, flow meter E, 352, flow meter F, 353, flow meter G, 354, flow meter H, 361, water collection barrel A, 371, fine filter A, 401, “V”-shaped electrode positive electrode connecting column, 402, “V”-shaped electrode negative electrode connecting column, 403, “V”-shaped electrode positive electrode, 404, “V”-shaped electrode negative electrode, 405, “V”-shaped electrode suspension column, 410, gravity separator / electric dehydrator, 411, gravity separator / electric dehydrator inlet pipe A, 412, gravity separator / electric dehydrator inlet pipe B, 413, gravity separator / electric dehydrator separated waste water discharge pipe, 414, gravity separator / electric dehydrator purified oil discharge pipe,415, gravity separator / electric dehydrator flow baffle, 416, gravity separator / electric dehydrator oil-water weir plate, 417, gravity separator / electric dehydrator buffer cavity, 418, gravity separator / electric dehydrator oil-water separation cavity, 419, gravity separator / electric dehydrator oil storage cavity, 421, valve P, 422, valve Q, 431, pressure gauge K, 432, pressure gauge L, 441, flow meter I, 442, flow meter J, 451, water collecting bucket B, 452, oil collecting bucket, 461, fine filter B. DETAILED DESCRIPTION

[0047] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and should not be used to limit the present application.

[0048] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship for the purpose of simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features with "first" and "second" can explicitly or implicitly include one or more of the features.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In conjunction with the accompanying drawings Figures 1-17 The present application designs a rapid supergravity field kitchen oil-water separation system, which comprises a preposed coarse residue filter separation unit, a solid-liquid depth separation unit, a multi-stage oil-water fine filter unit, an oil-water depth separation unit and a supporting pipeline, valve and instrument. The units and their connection relationship are as follows:

[0051] The preposed coarse residue filter separation unit comprises a preposed coarse residue filter 110, a Y-type filter 171, and a supporting pipeline, valve, pressure gauge and flow meter. The specific structure and connection relationship are as follows: Figures 4-6As shown, the main body of the front coarse residue filter 110 is cylindrical, and the bottom of the cylinder is tapered conical. The upper part of the front coarse residue filter cylinder is provided with a front coarse residue filter cover plate 122, and the front coarse residue filter cover plate 122 and the front coarse residue filter cylinder can be connected by a screw structure or other connection methods. The front coarse residue filter cylinder is provided with a front coarse residue filter inlet pipe 111 and a front coarse residue filter liquid outlet pipe 112; a front coarse residue filter baffle 116, a front coarse residue filter screen 117 and a stirrer 120 are arranged inside the front coarse residue filter cylinder. The bottom conical part of the front coarse residue filter 110 is connected with a front coarse residue filter residue discharge pipe 114, and the large-diameter solid particles gathered along the conical wall under the action of gravity are discharged.

[0052] More specifically, in the present embodiment, the front coarse residue filter inlet pipe 111 is arranged on the upper side wall of the front coarse residue filter cylinder, and the front coarse residue filter baffle 116 inside the front coarse residue filter cylinder is opposite to the inlet of the front coarse residue filter inlet pipe 111. The front coarse residue filter baffle 116 separates a front coarse residue filter buffer cavity 123 at the wall surface where the inlet of the front coarse residue filter inlet pipe 111 is located.

[0053] The front coarse residue filter screen 117 and the inner wall surface of the front coarse residue filter cylinder separate a front coarse residue filter liquid storage cavity 125, and the front coarse residue filter liquid outlet pipe 112 is connected with the front coarse residue filter liquid storage cavity 125 to discharge the liquid waste preliminarily filtered by the front coarse residue filter screen 117 from the front coarse residue filter 110.

[0054] The front coarse residue filter screen 117 and the front coarse residue filter buffer cavity 123 are the front coarse residue filter solid-liquid separation cavity 124; the stirrer 120 is located in the front coarse residue filter solid-liquid separation cavity 124, and the mixed solid-liquid kitchen waste in the front coarse residue filter solid-liquid separation cavity 124 is stirred by the stirrer 120 to realize the preliminary separation of solid waste-liquid waste by centrifugal action.

[0055] The outlet of the front coarse residue filter liquid outlet pipe 112 is connected with a Y-type filter 171, and the Y-type filter 171 is used to remove small-diameter solid particles in the liquid waste again.

[0056] More preferably, the front coarse residue filter screen 117 is provided with filter holes at the upper part, and a height is reserved near the bottom of the cylinder without filter holes, so as to prevent the viscous slurry in the solid waste separated by the bottom of the front coarse residue filter 117 from entering the front coarse residue filter liquid storage cavity 125 through the filter holes, and reduce the filtering effect.

[0057] More preferably, the valves and instruments used in the pre-separation unit are as follows: a valve A 131 is installed on the inlet pipeline 111 of the pre-coarse residue filter, a valve C 133 and a pressure gauge A 141 are installed on the liquid discharge pipeline 112 of the pre-coarse residue filter, and the outlet pipeline of the pre-coarse residue filter residue discharge pipeline 114 is connected to the residue discharge barrel 161 through a pipeline and a valve E 135, and a pressure gauge B 142 is also arranged on the pipeline.

[0058] More preferably, in the pre-coarse residue filter liquid storage cavity 125, a pre-coarse residue filter backwashing pipeline 113 is arranged towards the pre-coarse residue filter screen 117, so that when the pre-coarse residue filter screen 117 is blocked, high-pressure water can be pumped into the pre-coarse residue filter backwashing pipeline 113 to flush the pre-coarse residue filter screen 117. In order to match the solid sediment generated after flushing and discharge, a pre-coarse residue filter blowdown pipeline 115 is arranged at the bottom of the pre-coarse residue filter liquid storage cavity 125; a valve D 134 is arranged on the pre-coarse residue filter blowdown pipeline 115, and a valve B 132 is arranged on the pre-coarse residue filter backwashing pipeline 113.

[0059] More preferably, a heater 118 and a temperature measuring element 119 are arranged in the pre-coarse residue filter solid-liquid separation cavity 124. The heater 118 can be used to heat the kitchen oil and water in the pre-coarse residue filter solid-liquid separation cavity 124 to prevent solidification at low temperature. At the same time, the temperature measuring element 119 can be used to detect the temperature information in the pre-coarse residue filter solid-liquid separation cavity 124. According to different properties of kitchen oil and water, the temperature of kitchen waste is measured by the temperature measuring element 119, compared with the preset temperature, the power of the heater 118 is adjusted, and the temperature of the kitchen waste is controlled, which prevents the solidification of grease and reduces unnecessary energy consumption.

[0060] More preferably, a flap liquid level meter 121 is arranged in the pre-coarse residue filter solid-liquid separation cavity 124.

[0061] More preferably, a sealing structure is arranged between the pre-coarse residue filter cover plate 122, the pre-coarse residue filter cylinder and the pre-coarse residue filter screen 117.

[0062] More preferably, the stirrer 120 includes three secondary stirring shafts with an included angle of 120°, and each secondary stirring shaft is provided with four paddles in the axial direction. The inner side of the paddle is shorter, and the outer side is longer, so as to ensure that no large particle size solid particles are stuck between the paddles while maintaining a large stirring range, thereby improving the stirring effect.

[0063] The solid-liquid deep separation unit comprises a booster pump 210, a solid-liquid cyclone separator 220, and matched pipelines, valves, pressure gauges and flow meters. The inlet of the booster pump 210 is connected with the Y-shaped filter 171 through a pipeline, and the outlet of the booster pump 210 is connected with the solid-liquid cyclone separator 220 through a pipeline, so that the liquid waste filtered by the Y-shaped filter 171 is pumped into the solid-liquid cyclone separator 220.

[0064] The solid-liquid cyclone separator 220 has a structure as shown in Figure 7 、 8 The solid-liquid cyclone separator 220 has a structure as shown in

[0065] The solid-liquid cyclone separator 220 has a structure as shown in

[0066] The solid-liquid cyclone separator 220 has a structure as shown in

[0067] The solid-liquid cyclone separator 220 has a structure as shown in

[0068] The solid-liquid cyclone separator 220 has a structure as shown in

[0069]

[0070] The solid-liquid cyclone separator 220 has a structure as shown in i The solid-liquid cyclone separator 220 has a structure as shown in p The solid-liquid cyclone separator 220 has a structure as shown in​p are proportional amplification factors, μ is the liquid viscosity, and ΔP is the pressure drop.

[0071] Based on the diameter of the cylindrical segment, the cylindrical segment height l1=(0.7-2.0)D is selected in turn, the inlet hydraulic diameter d i =(0.13-0.29)D, the overflow pipe diameter d0=(1-2)d i , the overflow pipe insertion depth l0=(0.2-1)D, the underflow pipe diameter d u =(0.1-0.2)D, and the cone angle θ=20°-120°.

[0072] More preferably, the valves and meters used in the solid-liquid depth separation unit in conjunction include: valves F 231, pressure gauges C 241, flow meters B 251, valves G 232, and valves H 233 arranged in turn on the outlet pipeline of the booster pump 210. Pressure gauges E 243, valves J 235, and flow meters D 253 are arranged on the outlet pipeline of the overflow pipe 223 of the solid-liquid cyclone separator. Pressure gauges D 242, valves I 234, and flow meters C 252 are arranged at the outlet of the underflow pipe 224 of the solid-liquid cyclone separator.

[0073] More preferably, the solid-liquid depth separation unit can be composed of multiple parallel solid-liquid cyclone separators 220 to increase the processing capacity.

[0074] The multi-stage oil-water fine filtration unit at least includes a first-stage oil-water cyclone separator 310 and the corresponding pipelines, valves, pressure gauges, and flow meters. The structure of the first-stage oil-water cyclone separator 310 is shown in Figures 9-11 , which includes a cyclone oil-water separator cylindrical segment 311, a cyclone oil-water separator short cone pipe 312, a cyclone oil-water separator long cone pipe 313, and a cyclone oil-water separator underflow pipe 314 connected in turn and arranged along the same center line. The cyclone oil-water separator inlet pipe 315 is connected to the side wall of the cyclone oil-water separator cylindrical segment 311, one end of the cyclone oil-water separator inlet pipe 315 is arranged along the tangent direction of the cyclone oil-water separator cylindrical segment 311 (eccentric connection), and the other end of the cyclone oil-water separator inlet pipe 315 is connected to the overflow pipe 223 of the solid-liquid cyclone separator. The kitchen oil-water discharged from the solid-liquid cyclone separator overflow pipe 223 is input into the cyclone oil-water separator cylindrical segment 311 along the tangent direction through the cyclone oil-water separator inlet pipe 315.

[0075] A cyclone conductor is arranged in the cyclone oil-water separator cylindrical segment 311 along the axial direction, and the cyclone oil-water separator rotating guide vanes 317 are arranged on the outer wall surface of the cyclone conductor. Therefore, the flow channel between the cyclone conductor and the inner wall of the cyclone oil-water separator cylindrical segment 311 is divided into a spiral flow channel by the cyclone oil-water separator rotating guide vanes 317, so as to enhance the kitchen oil-water cyclone field intensity and improve the oil-water separation efficiency.

[0076] The cyclone oil-water separator overflow pipe 316 is arranged axially in the cyclone oil-water separator cylindrical section 311, and extends through the cyclone guide to the inside of the cyclone oil-water separator cylindrical section 311 at one end, and extends out of the end face of the cyclone oil-water separator cylindrical section 311 at the other end.

[0077] Under the action of the hypergravity field generated by the spiral flow channel, the kitchen oil-water input by the cyclone oil-water separator inlet pipe 315 is separated into water and oil due to the difference in density, and the water is discharged at the cyclone oil-water separator underflow pipe 314, and the oil is discharged at the cyclone oil-water separator overflow pipe 318.

[0078] More preferably, the cyclone guide vane includes four guide vanes, the root of the cyclone guide vane is connected to the outer wall of the cyclone oil-water separator overflow pipe to fix the cyclone guide vane, and the tip of the cyclone guide vane is in contact with the inner wall of the cyclone oil-water separator cylindrical section. The cyclone guide vane is designed by geometric method, adopts circular-arc orthogonal vanes, the directrix is composed of a circular-arc line and a straight line segment, forms a converging flow channel, and realizes fluid acceleration.

[0079] The cyclone guide vane root directrix equation is:

[0080]

[0081] The cyclone guide vane tip directrix equation is:

[0082]

[0083] Wherein, (x, y) is the coordinate of the cyclone guide vane root / tip directrix in the plane rectangular coordinate system, p is the radius of the circular cyclone guide vane root directrix arc segment, (x0, y0) is the intersection coordinate of the cyclone guide vane root directrix circular-arc segment and the straight line segment, β1 is the included angle between the cyclone guide vane root directrix straight line segment and the positive direction of the x-axis, K1 is the reciprocal of the slope of the cyclone guide vane root directrix straight line segment, R1 is the diameter of the cyclone guide vane root, and R2 is the diameter of the cyclone guide vane tip.

[0084] More preferably, the outlet end of the cyclone oil-water separator underflow pipe 314 is connected to the fine filter A 371 and the water collecting barrel A 361 in sequence through pipes. The fine filter A 371 can be used to filter small-particle-size solid particles and suspended matter in water again, so that the discharged wastewater meets the discharge standard, and then is input into the water collecting barrel A 361 for storage.

[0085] More preferably, the pipeline, valve, meter of the oil-water cyclone separator set specifically includes: a pressure gauge G 342 and a valve L 332 are installed on the outlet pipeline of the underflow pipeline 314 of the cyclone oil-water separator, a fine filter A 371, a flow meter E 351, and a water collecting barrel A 361 are installed on the connected discharge pipeline, a pressure gauge I 344, a valve O 335, and a flow meter H 354 are installed on the outlet pipeline of the overflow pipeline 316 of the cyclone oil-water separator.

[0086] More preferably, the overflow pipeline of the cyclone oil-water separator is divided into an inner overflow pipeline 318 of the cyclone oil-water separator and an outer overflow pipeline 316 of the cyclone oil-water separator, wherein the inner diameter of the outer overflow pipeline of the cyclone oil-water separator is greater than the inner diameter of the inner overflow pipeline of the cyclone oil-water separator, and the inner overflow pipeline of the cyclone oil-water separator is detachably connected with the cyclone conductor, so as to replace the inner overflow pipeline of the cyclone oil-water separator, change the inner diameter of the inner overflow pipeline of the cyclone oil-water separator, and adapt to different working conditions. The top cover plate of the cylindrical section 311 of the cyclone oil-water separator is detachably connected with the side wall of the cylindrical section 311 of the cyclone oil-water separator, so as to replace different cyclone guide vanes according to different needs.

[0087] More preferably, when the grease properties are relatively complex, the overflow with low water content and the underflow with low oil content cannot be obtained at the same time by only using a single-stage oil-water cyclone separator. Therefore, it is necessary to gradually process through multiple stages of oil-water cyclone separators with different processing precision to obtain better separation effect. For example Figures 1-3 The first-stage oil-water cyclone separator 310 and the second-stage oil-water cyclone separator 320 are connected in series, and the wastewater separated by the first-stage oil-water cyclone separator 310 is subjected to cyclone separation again by the second-stage oil-water cyclone separator 320. Therefore, the cyclone oil-water separator underflow pipeline 314 of the first-stage oil-water cyclone separator 310 is connected to the cyclone oil-water separator inlet pipeline 315 of the second-stage oil-water cyclone separator 320, and the wastewater is subjected to cyclone separation again by the second-stage oil-water cyclone separator 320. The specific connection relationship is as follows: the cyclone oil-water separator underflow pipeline 314 of all the first-stage oil-water cyclone separators 310 is connected to the cyclone oil-water separator inlet pipeline 315 of the second-stage oil-water cyclone separator 320 through a pipeline, and the outlet end of the cyclone oil-water separator underflow pipeline 314 of the second-stage oil-water cyclone separator 320 is connected to the fine filter A 371 and the water collecting barrel A 361 in turn through a pipeline.

[0088] More preferably, the pipeline, valve, meter matched with the secondary oil-water cyclone separator 320 specifically includes: a pressure gauge F 341 and a valve K 331 arranged on the outlet pipeline of the underflow pipeline 314 of the cyclone oil-water separator, a valve M 333, a pressure gauge H 343, and a flow meter F 352 arranged on the connecting pipeline of the primary oil-water cyclone separator 310 and the secondary oil-water cyclone separator 320, and a pressure gauge J 345, a valve N 334, and a flow meter G 353 arranged on the outlet pipeline of the overflow pipeline 316 of the cyclone oil-water separator of the secondary oil-water cyclone separator 320.

[0089] The diameter D of the cylindrical section of the oil-water cyclone separator is calculated by the following formula:

[0090]

[0091] wherein q m is the processing capacity, m 3 / h; Δp m is the maximum actual pressure drop, MPa; ρ l is the liquid phase density, t / m 3 ; C w is the oil phase mass concentration, %.

[0092] The nominal diameter D of the oil-water cyclone separator c = D / 2.

[0093] The differences between the primary and secondary structure designs are as follows:

[0094] The primary oil-water cyclone separator 310 is a double-cone cyclone, and the split ratio is determined according to the oil concentration of the overflow pipeline 223 of the solid-liquid cyclone separator. The short cone section 312 of the cyclone oil-water separator provides sufficient rotating power for the oil-water emulsion, and the oil-water emulsion stays in the elongated long cone section 313 of the cyclone oil-water separator for a long time to achieve oil-water separation. Based on the nominal diameter D c of the oil-water cyclone separator and the diameter D of the cylindrical section, the cylindrical section length L y1 = D1, the large cone section length The underflow pipe diameter D u1 = 0.33D C , the small cone section length The underflow pipe length L u1 = 50×D u1 .

[0095] The secondary oil-water cyclone separator 320 is a single-cone cyclone, and the inlet oil concentration is lower than that of the primary oil-water cyclone separator. To achieve oil removal, the split ratio should be less than 15%. Based on the nominal diameter D cAnd the diameter of the cylindrical segment D, and then select the length of the cylindrical segment: L y2 = D2, the inner diameter of the underflow pipe D u2 = 0.25D2, the length of the conical segment The length of the underflow pipe L u2 = 50D2.

[0096] More preferably, in each stage of oil-water cyclone separator, a single or multiple parallel is used to cope with different processing flow.

[0097] The oil-water depth separation unit includes a gravity separator / dewatering device 410 and a matching pipeline, valve, pressure gauge, flow meter. The gravity separator / dewaterer 410 is a horizontal structure, and its specific structure is shown in Figures 13-15 The gravity separator / dewaterer 410 is provided with a gravity separator / dewaterer inlet pipeline A 411 and a gravity separator / dewaterer inlet pipeline B 412 at one end, wherein the gravity separator / dewaterer inlet pipeline A 411 is connected with the outlet pipeline of the cyclone oil-water separator overflow pipeline 316 of the secondary oil-water cyclone separator 320, and the gravity separator / dewaterer inlet pipeline B 412 is connected with the outlet pipeline of the cyclone oil-water separator overflow pipeline 316 of the primary oil-water cyclone separator 310, receiving waste oil separated by the primary and / or secondary oil-water cyclone separator.

[0098] A gravity separator / dewaterer baffle plate 415 is arranged on the inner upper part of the cavity near the gravity separator / dewaterer inlet pipeline A 411 and the gravity separator / dewaterer inlet pipeline B 412. The gravity separator / dewaterer baffle plate 415 separates the inlet pipeline connection from the gravity separator / dewaterer baffle plate 415 into a gravity separator / dewaterer buffer cavity 417, which is used to reduce the flow velocity of the incoming flow, maintain the stability of the gravity separator / dewaterer oil-water separation cavity liquid, and ensure the separation efficiency.

[0099] The gravity separator / dewaterer 410 is provided with a gravity separator / dewaterer purified oil discharge pipeline 414 at one end, and the gravity separator / dewaterer purified oil discharge pipeline 414 is connected with the oil collecting barrel 452 through the pipeline, and the pipeline is provided with a pressure gauge L 432, a valve Q 422 and a flow meter I 441.

[0100] A gravity separator / electric dehydrator oil-water weir plate 416 is arranged at the inner bottom of the cavity near the gravity separator / electric dehydrator purified oil discharging pipeline 414 side, which separates the connection between the gravity separator / electric dehydrator purified oil discharging pipeline 414 and the gravity separator / electric dehydrator oil-water weir plate 416 into a gravity separator / electric dehydrator oil storage cavity 419. Since the oil density is low and located at the upper part, the separated purified oil will overflow from the upper part of the gravity separator / electric dehydrator oil-water weir plate 416 and enter the gravity separator / electric dehydrator oil storage cavity 419.

[0101] The communication area between the gravity separator / electric dehydrator flow baffle 415 and the gravity separator / electric dehydrator oil-water weir plate 416 is a gravity separator / electric dehydrator oil-water separation cavity 418, in which an electrode is arranged to purify the oil by using an electric field. A gravity separator / electric dehydrator separated waste water discharging pipeline 413 is arranged at the bottom of the gravity separator / electric dehydrator oil-water separation cavity 418; the gravity separator / electric dehydrator separated waste water discharging pipeline 413 is connected to a fine filter B 461 and a water collecting barrel B 451 through a pipeline to remove small particle size solid particles and suspended matter in water in the separated waste water, so that the discharged waste water meets the discharge standard; and a pressure gauge K 431, a valve P 421 and a flow meter J 442 are arranged on the connecting pipeline.

[0102] More preferably, the electrode structure arranged in the gravity separator / electric dehydrator oil-water separator cavity 418 is a "V"-shaped electrode plate, and a plurality of "V"-shaped electrode plates are arranged in parallel with each other; the open end of the "V"-shaped electrode plate faces the liquid inlet end of the gravity separator / electric dehydrator oil-water separator cavity 418, the tip end of the "V"-shaped electrode plate faces the liquid outlet end of the gravity separator / electric dehydrator oil-water separator cavity 418, and the positive and negative electrodes of adjacent "V"-shaped electrode plates are arranged alternately, so that the flow direction of the oil-water emulsion is the same as the direction of the electric field, thereby increasing the electrostatic force between water droplets.

[0103] More specifically, the "V"-shaped electrode plate is made of conductive material, and the "V"-shaped electrode plate is exposed to the oil-water emulsion in the gravity separator / electric dehydrator oil-water separator cavity 418, which enhances the charge exchange between the oil-water emulsion and the electrode, enhances the coalescence process between liquid droplets, and improves the oil-water separation efficiency. The upper part of the "V"-shaped electrode is suspended at the inner top of the gravity separator / electric dehydrator oil-water separator cavity 418 by a "V"-shaped electric suspension column 405, and the "V"-shaped electric suspension column 405 is made of insulating material to prevent the gravity separator / electric dehydrator 410 shell from being electrified.

[0104] More specifically, the "V" shaped electrode positive electrode 403 and the "V" shaped electrode negative electrode 404 are arranged at equal intervals, for example, the interval between adjacent "V" shaped electrode positive electrode 403 and "V" shaped electrode negative electrode 404 is 100 mm.

[0105] More specifically, the "V" shaped electrode positive electrode 403 is connected by the "V" shaped electrode positive electrode connecting column 401, and the "V" shaped electrode negative electrode 404 is connected by the "V" shaped electrode negative electrode connecting column 402. The "V" shaped electrode positive / negative electrode connecting column is made of conductive material. An external power source applies voltage to the "V" shaped electrode positive / negative electrode through the "V" shaped electrode positive / negative electrode connecting column, and the "V" shaped electrode positive / negative electrode connecting column has a certain supporting effect on the electrode, avoiding the electrode from deviating from the designed position due to the deviation of the gravity center of the electrode caused by the "V" shaped electrode.

[0106] More specifically, the "V" shaped electrode plate is composed of two inclined electrode plates, and the included angle between the two electrode plates is 80°. It promotes the migration of droplets from the opening end to the tip of the electrode plate, thereby improving the oil-water separation efficiency.

[0107] More specifically, the top of the "V" shaped electrode plate is 0.15D e (D e is left from the top of the gravity separator / electric dehydrator oil-water separator cavity 418, and the bottom of the "V" shaped electrode plate is left from the bottom of the gravity separator / electric dehydrator oil-water separator cavity 418. 0.3D e gap, so that the installation can make the "V" shaped electrode plate located in the upper part of the water layer, avoiding short circuit caused by the electrode contacting the water layer. As shown in Figure 15 , the radial distance between the "V" shaped electrode plate and the side wall of the gravity separator / electric dehydrator oil-water separator cavity 418 is 0.05D e .

[0108] More specifically, an array of rectangular holes is arranged on the "V" shaped electrode, and the size of the rectangular holes gradually decreases from bottom to top, that is, the water droplet diameter in the oil-water emulsion near the bottom water layer side is larger, so a larger rectangular hole width is set, and the water droplet diameter in the oil-water emulsion near the upper oil layer side is smaller, so a smaller rectangular hole width is set. In this embodiment, the length of all rectangular holes in the horizontal direction is 10 mm, and the height of rectangular holes located in the upper, middle and lower three regions is 3 mm (25 rows), 4 mm (20 rows) and 5 mm (12 rows) respectively; and the left and right interval of adjacent rectangular holes is 2 mm, and the vertical interval of adjacent rectangular holes is 1 mm.

[0109] In addition to the above-mentioned equidistance and equal length design, the rectangular holes can also adopt a variable distance design and different lengths in different regions, as long as the size of the rectangular holes gradually decreases from bottom to top and the density is met.

[0110] The above examples are only used to illustrate the design idea and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and the protection scope of the present application is not limited to the above examples. Therefore, any equivalent changes or modifications made in accordance with the principles and design ideas disclosed by the present application are within the protection scope of the present application.

Claims

1. A rapid super gravity field kitchen oil-water separation system, characterized in that, The device comprises a front coarse residue filtering separation unit, a solid-liquid deep separation unit, a multi-stage oil-water fine filtering unit and an oil-water deep separation unit. The front coarse residue filtering separation unit comprises a front coarse residue filter (110), a Y-type filter (171), a stirrer (120) and a front coarse residue filter screen (117) built in the front coarse residue filter (110). The solid waste-liquid waste is preliminarily separated by centrifugal action under the action of the stirrer (120). The front coarse residue filter screen (117) and the inner wall surface of the front coarse residue filter cylinder are separated to form a front coarse residue filter liquid storage cavity (125). The front coarse residue filter liquid storage cavity (125) inputs the preliminarily filtered liquid waste into the Y-type filter (171) through a front coarse residue filter liquid discharge pipeline (112). The solid-liquid deep separation unit comprises a solid-liquid cyclone separator (220) and a booster pump (210). The booster pump (210) is arranged on the connecting pipeline between the Y-type filter (171) and the solid-liquid cyclone separator (220) to pump the liquid waste filtered by the Y-type filter (171) into the solid-liquid cyclone separator (220). The solid-liquid cyclone separator (220) performs solid-liquid cyclone separation on the liquid waste again. The multi-stage oil-water fine filtering unit comprises a first-stage oil-water cyclone separator (310) and a second-stage oil-water cyclone separator (320). The first-stage oil-water cyclone separator (310) adopts a double-cone cyclone, and the second-stage oil-water cyclone separator (320) adopts a single-cone cyclone. The inlet end of the first-stage oil-water cyclone separator (310) is connected to the liquid phase outlet of the solid-liquid cyclone separator (220). The oil phase outlet of the first-stage oil-water cyclone separator (310) is connected to the oil-water deep separation unit, and the water phase outlet of the first-stage oil-water cyclone separator (310) is connected to the inlet end of the second-stage oil-water cyclone separator (320) or a water collecting barrel. The oil phase outlet of the second-stage oil-water cyclone separator (320) is connected to the oil-water deep separation unit, and the water phase outlet of the second-stage oil-water cyclone separator (320) is connected to the water collecting barrel. The oil-water deep separation unit comprises a gravity separator / electric dehydrator (410) with an electrode built in. The oil is purified by an electric field.

2. A rapid high-g field kitchen oil-water separation system according to claim 1, wherein, The solid-liquid cyclone separator (220) comprises a solid-liquid cyclone separator cylindrical section (221), a solid-liquid cyclone separator conical section (225) and a solid-liquid cyclone separator underflow pipe (224) connected in sequence and arranged along the same center line; the side wall of the solid-liquid cyclone separator cylindrical section (221) is connected with a solid-liquid cyclone separator inlet pipe (222), one end of the solid-liquid cyclone separator inlet pipe (222) is arranged along the tangential direction of the solid-liquid cyclone separator cylindrical section (221), and the other end is connected with the outlet pipeline of the booster pump (210); a solid-liquid cyclone separator overflow pipe (223) is arranged at the end of the solid-liquid cyclone separator cylindrical section (221), one end of the solid-liquid cyclone separator overflow pipe (223) extends to the inside of the solid-liquid cyclone separator cylindrical section (221) and is arranged along the same center line, and the other end is located outside the solid-liquid cyclone separator cylindrical section (221).

3. A rapid high-g field kitchen oil-water separation system according to claim 2, wherein, The primary oil-water cyclone separator (310) comprises a cyclonic oil-water separator cylindrical section (311), a cyclonic oil-water separator short conical pipe (312), a cyclonic oil-water separator long conical pipe (313) and a cyclonic oil-water separator underflow pipe (314) connected in sequence and arranged along the same center line; a cyclonic oil-water separator inlet pipe (315) is connected to the side wall of the cyclonic oil-water separator cylindrical section (311), one end of the cyclonic oil-water separator inlet pipe (315) is arranged along the tangential direction of the cyclonic oil-water separator cylindrical section (311), and the other end is connected with the solid-liquid cyclone separator overflow pipe (223); a cyclonic conductor is arranged in the cyclonic oil-water separator cylindrical section (311) in the axial direction, the outer wall surface of the cyclonic conductor is provided with cyclonic oil-water separator rotating guide vanes (317), and the cyclonic oil-water separator rotating guide vanes (317) divide the flow channel between the cyclonic conductor and the inner wall of the cyclonic oil-water separator cylindrical section (311) into a spiral flow channel.

4. The rapid high-g field kitchen oil-water separation system of claim 1, wherein, A gravity separator / electric dehydrator baffle (415) is arranged on the inner upper part of the cavity near the side of the inlet pipeline of the gravity separator / electric dehydrator, the gravity separator / electric dehydrator baffle (415) separates the connection part of the inlet pipeline and the gravity separator / electric dehydrator baffle (415) into a gravity separator / electric dehydrator buffer cavity (417); one end of the gravity separator / electric dehydrator (410) is provided with a gravity separator / electric dehydrator purified grease discharge pipeline (414); a gravity separator / electric dehydrator oil-water weir plate (416) is arranged on the inner bottom of the cavity near the side of the gravity separator / electric dehydrator purified grease discharge pipeline (414), the gravity separator / electric dehydrator oil-water weir plate (416) separates the connection part of the gravity separator / electric dehydrator purified grease discharge pipeline (414) and the gravity separator / electric dehydrator oil-water weir plate (416) into a gravity separator / electric dehydrator oil storage cavity (419); the communication area between the gravity separator / electric dehydrator baffle (415) and the gravity separator / electric dehydrator oil-water weir plate (416) is a gravity separator / electric dehydrator oil-water separation cavity (418), and an electrode is arranged in the gravity separator / electric dehydrator oil-water separation cavity (418).

5. A rapid high-g field kitchen oil-water separation system according to claim 4, wherein, The electrode is composed of a plurality of "V"-shaped electrode plates, adjacent "V"-shaped electrode plates are arranged alternately in positive and negative poles; the opening side of the "V"-shaped electrode plate faces the liquid inlet end, and the tip end of the "V"-shaped electrode plate faces the liquid outlet end.

6. A rapid high-g field kitchen oil-water separation system according to claim 5, wherein, Rectangular holes arranged in an array are formed on the "V"-shaped electrode plate, and the size of the rectangular holes gradually decreases from bottom to top.

7. A rapid high-g field kitchen oil-water separation system according to claim 1, 2 or 3, wherein, The solid-liquid cyclone separator (220), the primary oil-water cyclone separator (310) and the secondary oil-water cyclone separator (320) adopt a single or multiple parallel forms to meet the requirements of different processing speeds.

8. The rapid high-g field kitchen oil-water separation system of claim 1, wherein, The preposed coarse residue filter separation unit, the solid-liquid depth separation unit, the multi-stage oil-water fine filter unit and the oil-water depth separation unit are equipped with heaters to avoid solidification of kitchen oil and water at low temperature.

9. The rapid high-g field kitchen oil-water separation system of claim 1, wherein, The preposed coarse residue filter screen (117) is equipped with a preposed coarse residue filter backwashing pipeline (113), and the preposed coarse residue filter backwashing pipeline (113) pumps in high-pressure water to wash the preposed coarse residue filter screen (117).

10. The rapid high-g field kitchen oil-water separation system of claim 1, wherein, The stirrer (120) includes three or more secondary stirring shafts, and each secondary stirring shaft is provided with four paddles in the axial direction.

Images