Slaughter sewage treatment equipment

Abstract

The invention provides slaughtering sewage treatment equipment. The slaughtering sewage treatment equipment comprises a filtering device, an oil removing device and an integrated treatment device which are sequentially arranged in the flowing direction of sewage, the filtering device is used for performing at least two-stage filtration on the sewage, removing particulate impurities in the sewage and cleaning a filtering part; the oil removal device is used for separating upper-layer grease in the sewage; the integrated treatment device is used for carrying out biochemical treatment on the sewage subjected to slag and oil removal; the slaughter sewage treatment device can perform double filtration treatment on slaughter sewage and clean a filtering part, so that impurities are effectively filtered and separated, and the impurities entering downstream equipment are reduced; and the grease can be separated independently, so that the separation quality is improved, the grease entering a downstream treatment link is effectively reduced, and blockage or damage to subsequent equipment is prevented.

Description

Technical Field

[0001] The present invention relates to the field of sewage treatment equipment, and more specifically, to slaughterhouse sewage treatment equipment. Background Art

[0002] In meat and poultry slaughterhouses, wastewater must be treated before it can be discharged, making it a very important step in production. Slaughterhouse wastewater contains large amounts of impurities such as fur, grease, minced meat, and bone residue, which cause serious environmental pollution. Traditional wastewater treatment equipment often has difficulty effectively removing these pollutants, which can seriously affect the speed and efficiency of wastewater treatment, and can also cause equipment to become clogged or even damaged, increasing maintenance costs and treatment difficulty. Summary of the Invention

[0003] In order to overcome the defects of the prior art, the technical problem to be solved by the present invention is to propose a slaughterhouse wastewater treatment equipment, which can perform double filtration treatment on slaughterhouse wastewater, clean the filtering components, effectively filter and separate impurities, and reduce the entry of impurities into downstream equipment; and can perform separate separation treatment on grease, improve the separation quality, effectively reduce the entry of grease into downstream processing links, and prevent blockage or damage to subsequent equipment.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] The present invention provides a slaughterhouse wastewater treatment device, comprising a filtering device, an oil removal device, and an integrated treatment device which are sequentially arranged along the flow direction of the wastewater; the filtering device is used to filter the wastewater at least in two stages, remove particulate impurities in the wastewater, and can clean the filter components; the oil removal device is used to separate the upper layer of grease in the wastewater; the integrated treatment device is used to perform biochemical treatment on the wastewater after deslagging and oil removal.

[0006] In a preferred technical solution of the present invention, the filtering device includes a first water trough, in which a first conveyor mesh belt and a second conveyor mesh belt are installed; the first conveyor mesh belt is located on the side of the second conveyor mesh belt away from the oil removal device, and the mesh aperture of the second conveyor mesh belt is smaller than the mesh aperture of the first conveyor mesh belt; the interior of the first water trough is divided into a water inlet area, a first purification area and a second purification area through the first conveyor mesh belt and the second conveyor mesh belt, and the side wall of the second purification area is provided with a first drain port for draining water to the oil removal device; the first conveyor mesh belt and the second conveyor mesh belt are both inclined, and the tops are both bent toward one side of the oil removal device to form a straight section; a cleaning structure and a slag discharge structure are provided below the straight section, the cleaning structure is used to brush and clean the belt surface of the conveyor mesh belt, and the slag discharge structure is used to receive fallen impurities and send the impurities to the outside.

[0007] In a preferred technical solution of the present invention, the cleaning structure includes a first brush roller and a second brush roller, and the first brush roller and the second brush roller are rotatably mounted between the two walls of the first water trough through bearings, and the first brush roller is located on the side of the second brush roller close to the oil removal device; the outer wall of the first brush roller is fixed with a plurality of first brush strips extending along the length direction, and the plurality of first brush strips are distributed in a circular array around the axis of the first brush roller; the outer wall of the second brush roller is fixed with a second brush strip, and the second brush strip is spirally wound around the outer wall of the second brush roller; the bristles on the top of the first brush roller and the second brush roller extend to the belt surface that supports the conveyor mesh belt; both cleaning structures are driven by the first motor.

[0008] In a preferred technical solution of the present invention, at least one electric heating pipe is provided in the straight section of the second conveyor mesh belt for drying the mesh belt in the straight section.

[0009] In a preferred technical solution of the present invention, the slag discharge structure includes a trough and a spiral shaft; the trough is mounted between the two side walls of the first water trough and is located below the straight section; the side of the trough close to the oil removal device extends upward to a surface higher than the top surface of the straight section, and the side of the trough away from the oil removal device extends upward to the belt surface that supports the conveyor belt, and the corresponding first brush roller and second brush roller are located inside the trough; the bottom of the trough is a concave arc-shaped structure, and the trough wall of the first water trough is provided with a slag discharge port corresponding to the concave part of the trough, and an extension cover is installed on the outside of the slag discharge port, and a feed port is provided at the bottom of the extension cover; the spiral shaft is rotatably mounted between the extension cover and the trough wall of the first water trough, and the spiral shafts of the two spiral shafts are driven by a second motor, and the rotating spiral shaft is used to send the filter residue gathered at the bottom of the trough to the outside.

[0010] In a preferred technical solution of the present invention, the interior of the inclined bottom end of the first conveyor mesh belt and the second conveyor mesh belt is rotatably supported by support rollers; the support rollers include rollers, gears are fixedly provided at both ends of the rollers, and tube strips are fixedly provided on the outer walls of the gears, and the tube strips, the inner ring of the gears and the rollers are communicated with each other; the outer wall of the rollers is provided with a plurality of strip openings penetrating the inner wall, and the plurality of strip openings are distributed in a circular array around the axis of the rollers; the tube bodies at both ends are rotatably installed on the groove wall of the first water trough through bearings, and the tube strips penetrate the groove wall of the first water trough and extend to the outside and are connected to the return pipe; the gears are meshed with the gear rings of the conveyor mesh belts for transmission; the groove wall of the first water trough is provided with two groups of return ports corresponding to the two groups of return pipes, and the end of the return pipe away from the tube strips is connected to the return port; the support rollers of the first conveyor mesh belt are connected to the first purification area through the first return pipe, and the support rollers of the second conveyor mesh belt are connected to the second purification area through the second return pipe.

[0011] In a preferred technical solution of the present invention, the oil removal device includes a second water tank and an oil scooping mechanism installed on the top of the second water tank; the side wall of the second water tank close to the filtering device is provided with a water inlet connected to the first drain outlet; the outer wall of the second water tank is fixedly provided with an oil collecting tank, the bottom of the oil collecting tank is connected with a discharge pipe, and the discharge pipe is provided with an on-off valve; the inner wall of the second water tank away from the water inlet is fixedly provided with an oil receiving tank, and the oil receiving tank is connected to the oil collecting tank through an oil discharge hole; the oil scooping mechanism is used to scoop the oil and fat on the upper layer of the sewage and transport the oil and fat to the oil receiving tank.

[0012] In a preferred technical solution of the present invention, the oil scooping mechanism includes a lead screw, which is mounted between the two end surfaces of the second water tank through a bearing, and the lead screw is located above the oil receiving tank; a bracket is mounted on the slide seat of the lead screw, and an electric push rod is mounted on the bracket, and an oil scooping structure is mounted on the piston rod end of the electric push rod, and the electric push rod is used to drive the oil scooping structure to move vertically, thereby realizing the action of scooping and unloading grease.

[0013] In a preferred technical solution of the present invention, the oil scavenging structure includes an oil scavenging trough, a support frame, a spring, and a pressing piece; the bottom of the oil scavenging trough is provided with an oil lower port extending in the length direction; the support frame includes a frame bar, and the bottom surfaces of both ends of the frame bar are fixed with pads, and the pads are connected to the oil scavenging trough by bolts, so that a movable distance is left between the frame bar and the bottom surface of the oil scavenging trough; the top surface of the frame bar is fixed with a column corresponding to the electric push rod, and the column is connected to the piston rod end of the electric push rod by a coupling; the top surface of the frame bar is fixed with at least two first guide rods, and the bracket is provided with a first guide hole corresponding to the first guide rod. The guide rod moves along the first guide hole; a second guide hole is provided at the first guide rod, which passes through the bottom surface of the frame bar; the pressure piece includes a pressure plate, and a second guide rod is fixedly provided on the top surface of the pressure plate corresponding to the second guide hole. The second guide rod is inserted in the second guide hole, and a spring is provided in the second guide hole to provide the pressure piece with an elastic force to push downward so that the pressure plate can block the lower oil port; a plurality of protrusions for pushing the pressure piece are fixed inside the oil receiving groove, and the protrusions are evenly spaced along the length direction of the oil receiving groove. The electric push rod drives the oil scooping structure to move downward, so that the protrusions can pass through the lower oil port, push the pressure piece, and release the blockage.

[0014] In a preferred technical solution of the present invention, the bottom of the oil receiving groove is tilted downward toward the oil drain hole, and the lower end is connected to the bottom end of the oil drain hole; the top surfaces of the convex columns are of the same height, and the top ends are all arc-shaped raised structures.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a slaughterhouse wastewater treatment device, comprising a filtering device, an oil removal device, and an integrated treatment device arranged in sequence along the flow direction of the wastewater; the filtering device is used to filter the wastewater in at least two stages, performing a double filtration treatment on the slaughterhouse wastewater, effectively filtering and separating impurities, and reducing the amount of impurities entering downstream equipment; and the filtering components are cleaned to maintain efficient filtering effect and quality.

[0017] The oil removal device is used to separate the upper layer of grease from sewage; it can separate and treat the grease separately, improve the separation quality, effectively reduce the amount of grease that enters the downstream processing link, and prevent subsequent equipment from being blocked or damaged;

[0018] The integrated treatment device is used to carry out biochemical treatment on the wastewater after deslagging and degreasing, and to carry out deep purification treatment to ensure that the wastewater can meet the discharge standards after treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a slaughterhouse wastewater treatment device provided in a specific embodiment of the present invention from a first perspective;

[0020] Figure 2 is a schematic diagram of the three-dimensional structure of a slaughterhouse wastewater treatment device provided in a specific embodiment of the present invention from a second perspective;

[0021] Figure 3 is a schematic diagram of the three-dimensional structure of the filtering device provided in a specific embodiment of the present invention from a first perspective;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the filtering device provided in a specific embodiment of the present invention from a second viewing angle;

[0023] Figure 5 is a cross-sectional view of a filter device provided in a specific embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of the three-dimensional structure of a support roller provided in a specific embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of the three-dimensional structure of the oil removal device provided in a specific embodiment of the present invention from a first perspective;

[0026] Figure 8 is a schematic diagram of the three-dimensional structure of the oil removal device provided in a specific embodiment of the present invention from a second perspective;

[0027] Figure 9 is a schematic diagram of the expanded structure of a portion of the oil recovery mechanism provided in a specific embodiment of the present invention from a first perspective;

[0028] Figure 10It is a schematic diagram of the expanded structure from a second perspective of a partial structure of the oil recovery mechanism provided in a specific embodiment of the present invention.

[0029] In the picture:

[0030] 100. Integrated processing device;

[0031] 200, filter device; 211, first conveyor mesh belt; 212, second conveyor mesh belt; 213, straight section; 220, electric heating pipe; 230, first water trough; first purification zone; 232, second purification zone; 233, water inlet zone; 240, cleaning structure; 241, first brush roller; 242, second brush roller; 250, slag discharge structure; 251, trough; 252, screw shaft; 260, extension cover; 270, support roller; 271, roller; 272, gear; 273, tube strip; 274, strip port; 281, first return pipe; 282, second return pipe;

[0032] 300, oil removal device; 310, second water tank; 311, oil collecting tank; 312, oil receiving tank; 313, oil drain hole; 314, boss; 320, oil scavenging mechanism; 321, lead screw; 322, bracket; 323, electric push rod; 324, first guide hole; 400, oil scavenging structure; 410, oil scavenging tank; 411, lower oil port; 420, support frame; 421, frame bar; 422, pad; 423, first guide rod; 424, second guide hole; 430, spring; 440, pressure piece; 441, pressure plate; 442, second guide rod. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0034] like Figure 1 、 Figure 2 As shown, a specific embodiment of the present invention discloses a slaughterhouse wastewater treatment device, comprising a filter device 200, an oil removal device 300, and an integrated treatment device 100 arranged in sequence along the flow direction of the wastewater; the filter device 200 is used to filter the wastewater at least two levels to remove particulate matter and impurities in the wastewater, and can clean the filter components; the oil removal device 300 is used to separate the upper layer of fat in the wastewater; the integrated treatment device 100 is used to perform biochemical treatment on the wastewater after deslagging and oil removal;

[0035] The above-mentioned slaughterhouse wastewater treatment equipment, wherein the filtering device is used to filter the wastewater at least in two stages, performs double filtration treatment on the slaughterhouse wastewater, effectively filters and separates impurities, reduces the impurities from entering the downstream equipment; and cleans the filter components to maintain efficient filtration effect and quality;

[0036] The oil removal device is used to separate the upper layer of grease from sewage; it can separate and treat the grease separately, improve the separation quality, effectively reduce the amount of grease that enters the downstream processing link, and prevent subsequent equipment from being blocked or damaged;

[0037] The integrated treatment device is used to carry out biochemical treatment on the wastewater after deslagging and degreasing, and to carry out deep purification treatment to ensure that the wastewater can meet the discharge standards after treatment; among them, the integrated treatment device includes an anaerobic tank, an aerobic tank, a sedimentation tank, an MBR membrane tank, and a disinfection tank, which carry out multiple purification treatments on the wastewater to meet the requirements for discharge; it should be noted that it is a relatively common wastewater treatment equipment, which can be purchased and used on the market, and the details will not be elaborated.

[0038] Further, if Figures 3 to 5 As shown, the filtering device 200 includes a first water tank 230, in which a first conveyor mesh belt 211 and a second conveyor mesh belt 212 are installed. The first conveyor mesh belt is located on the side of the second conveyor mesh belt away from the oil removal device, and the mesh aperture of the second conveyor mesh belt is smaller than the mesh aperture of the first conveyor mesh belt. Larger impurities are filtered through the first conveyor mesh belt, and smaller impurities are filtered through the second conveyor mesh belt, thereby achieving graded processing and improving filtration speed and quality.

[0039] The interior of the first water tank 230 is divided into a water inlet area 233, a first purification area, and a second purification area 232 by a first conveyor mesh belt 211 and a second conveyor mesh belt 212. A first drain port for draining water to the oil removal device is provided on the side wall of the second purification area. The first conveyor mesh belt 211 and the second conveyor mesh belt 212 are both inclined, and their tops are bent toward one side of the oil removal device to form a straight section 213.

[0040] The first conveyor mesh belt and the second conveyor mesh belt are used as partition components inside the first water tank to partition it. The sewage can complete the corresponding filtration treatment by passing through the conveyor mesh belt, and the filter residue is transferred to the straight section along the conveyor mesh belt to realize the precipitation of the filter residue; and a cleaning structure 240 and a slag discharge structure 250 are provided below the straight section 213. The cleaning structure is used to brush and clean the belt surface of the conveyor mesh belt, and the slag discharge structure is used to receive fallen impurities and send the impurities to the outside. The conveyor mesh belt is actively cleaned by the cleaning structure to prevent the filter residue from clogging the mesh holes and maintain an effective filtration effect. A slag discharge structure is also provided to discharge the separated filter residue to the outside for timely treatment to prevent accumulation.

[0041] Further, if Figure 5As shown, the cleaning structure 240 includes a first brush roller 241 and a second brush roller 242. The first brush roller and the second brush roller are rotatably mounted between the two walls of the first water tank through bearings. The first brush roller 241 is located on the side of the second brush roller 242 close to the oil removal device 300; the end shafts of the first brush roller and the second brush roller are connected to the output shaft of the first motor through a sprocket chain assembly. The first motor drives multiple brush rollers to rotate, reducing the number of motors used and reducing equipment costs and operating costs.

[0042] The outer wall of the first brush roller is fixed with a plurality of first brush strips extending in the length direction, and the plurality of first brush strips are distributed in a circular array around the axis of the first brush roller; the outer wall of the second brush roller is fixed with a second brush strip, and the second brush strip is spirally wound around the outer wall of the second brush roller; the bristles on the top of the first brush roller and the second brush roller extend to the belt surface that is against the conveyor mesh belt; it provides roller brush cleaning to the conveyor mesh belt in the opposite direction of movement through the first brush roller, thereby realizing the first level of cleaning action; it provides roller brush cleaning with lateral force to the conveyor mesh belt through the second brush roller, and providing different directions can further enhance the overall cleaning effect and prevent impurities from clogging the conveyor mesh belt.

[0043] Furthermore, at least one electric heating pipe 220 is provided in the straight section of the second conveyor mesh belt 212, which is used to dry the mesh belt at the straight section; the second conveyor mesh belt is mainly used to filter out relatively fine impurities, which will stick more tightly to the surface of the conveyor mesh belt, especially in a wet state, where the adhesion force is stronger, affecting the cleaning of the roller brush; and the added electric heating pipe can heat within the straight section, thereby drying the conveyor mesh belt and impurities in this area, making it easier for impurities to fall off quickly during subsequent roller brush cleaning, thereby improving the cleaning quality.

[0044] Furthermore, the slag discharge structure 250 includes a trough 251 and a spiral shaft 252. The trough 251 is mounted between the two side walls of the first water trough 230 and is located below the straight section 213. The side of the trough close to the oil removal device extends upward to a position higher than the top surface of the straight section, and the side of the trough away from the oil removal device extends upward to the surface of the conveyor belt. The corresponding first brush roller 241 and second brush roller 242 are located inside the trough 251, providing a large material receiving range to effectively receive dropped impurities.

[0045] The bottom of the trough is a concave arc-shaped structure so that the filter residue can be collected at the bottom; Figure 3As shown, a slag discharge port is provided at the concave portion of the trough wall of the first water trough 230 corresponding to the material trough 251, and an extension cover 260 is installed on the outside of the slag discharge port. A discharge port is provided at the bottom of the extension cover. The extension cover is provided to provide installation conditions for one end of the spiral shaft to extend out of the outside of the first water trough, thereby ensuring that the filter residue can be brought out of the outside of the first water trough; the spiral shaft 252 is rotatably mounted between the extension cover 260 and the trough wall of the first water trough 230, and the spiral shafts of the two spiral shafts are driven by a second motor, which also reduces the number of second motors used, reduces equipment costs and operating costs, and the rotating spiral shaft is used to send the filter residue collected at the bottom of the material trough to the outside.

[0046] Further, if Figure 5 、 Figure 6 As shown, the interior of the inclined bottom end of the first conveyor mesh belt 211 and the second conveyor mesh belt 212 is rotatably supported by a support roller 270; the support roller 270 includes a roller 271, and gears 272 are fixedly provided at both ends of the roller 271. A tube strip 273 is fixedly provided on the outer wall of the gear 272, and the tube strip, the inner ring of the gear and the roller are in communication; the outer wall of the roller 271 is provided with a plurality of strip-shaped openings 274 penetrating the inner wall, and the plurality of strip-shaped openings are distributed in a circular array around the axis of the roller; the tube bodies at both ends are rotatably mounted on the wall of the first water trough through bearings, and the tube strip penetrates the wall of the first water trough and extends to the outside and is in communication with the return pipe; the gear is meshed with the toothed ring of the conveyor mesh belt for transmission; the first water trough The groove wall is provided with two groups of return ports corresponding to the two groups of return pipes, and the end of the return pipe away from the pipe strip is connected to the return port; the support roller 270 of the first conveyor mesh belt 211 is connected to the first purification area through the first return pipe 281, and the support roller 270 of the second conveyor mesh belt 212 is connected to the second purification area 232 through the second return pipe 282; the conveyor mesh belt is a filtering component. During the filtering process, it is blocked by the two belt surfaces, and some impurities will stay between the two belt surfaces of the conveyor mesh belt. The above design can provide conditions for these impurities to more easily flow back to the purification area, and can prevent impurities from staying and accumulating between the belt surfaces of the conveyor mesh belt, thereby avoiding more serious blockage.

[0047] Further, if Figure 7 、 Figure 8As shown, the oil removal device 300 includes a second water tank 310 and an oil scooping mechanism 320 mounted on the top of the second water tank. A drain pipe is installed at the bottom of the side wall of the second water tank and connected to the water inlet of the pump body. The pump body pumps the sewage in the second water tank to the integrated treatment device. A water inlet is installed on the side wall of the second water tank near the filtering device and connected to the first drain port. An oil collecting tank 311 is fixedly installed on the outer wall of the second water tank 310. A discharge pipe is connected to the bottom of the oil collecting tank and is equipped with an on-off valve. An oil receiving tank 312 is fixedly installed on the inner wall of the second water tank 310 away from the water inlet. The oil receiving tank 312 is connected to the oil collecting tank 311 through an oil discharge hole 313. The oil scooping mechanism is used to scoop grease from the upper layer of the sewage and transport it to the oil receiving tank. The grease then flows to the oil collecting tank for unified collection and treatment. The discharge pipe can also be connected to an external oil-water separation device through a pipeline to achieve in-depth cleaning and further separate grease and sewage for convenient classification and treatment.

[0048] Furthermore, the oil recovery mechanism 320 includes a screw 321, which is mounted between the two end surfaces of the second water tank via bearings and is located above the oil receiving tank. A bracket 322 is mounted on the slide of the screw 321, and an electric push rod 323 is mounted on the bracket 322. The piston rod end of the electric push rod 323 is mounted with an oil recovery structure 400. The electric push rod is used to drive the oil recovery structure to move vertically to achieve the action of recovering and unloading grease. The design and coordination of the overall structure can ensure that the oil recovery structure covers the entire range of the second water tank as much as possible, allowing for a more comprehensive oil recovery action, overcoming the problems of limited coverage and low efficiency of floating oil-water separation, and effectively improving the overall processing efficiency.

[0049] Furthermore, a cover is installed above the top of the second water tank to shield the second water tank and protect the mobile oil recovery mechanism. In addition, an ultrasonic sensor for detecting oil-water stratification is installed on the cover. Through non-invasive installation at the top, the sewage below is monitored. The difference in the propagation speed of ultrasound in oil and water is used to detect the interface through changes in echo time and intensity. The electric push rod adjusts the penetration depth of the oil recovery mechanism, thereby more accurately recovering oil and reducing the recovery of sewage.

[0050] Furthermore, the two ends of the bracket are mounted on the top of the two side walls of the second water trough, and the two ends of the bracket are bent downward to provide flanges, on which guide bolts are installed. The two groove walls of the second water trough are provided with guide openings extending along the length direction corresponding to the guide bolts. The movement of the bracket is further limited by the cooperation between the guide bolts and the guide openings. The cooperation between the guide bolts and the guide openings, and the cooperation between the bracket and the second water trough can also play a force distribution effect, reduce the force on the screw, and enable the oil recovery structure to move smoothly and straightly along with the slide seat.

[0051] Further, if Figure 9 、 Figure 10 As shown, the oil scavenging structure 400 includes an oil scavenging tank 410, a support frame 420, a spring 430, and a pressing piece 440; the bottom of the oil scavenging tank 410 is provided with an oil lowering port 411 extending in the longitudinal direction; the support frame 420 includes a frame bar 421, and the bottom surfaces of both ends of the frame bar 421 are fixed with pads 422, and the pads 422 are connected to the oil scavenging tank 410 by bolts, so that a movable gap is left between the frame bar and the bottom surface of the oil scavenging tank; the top surface of the frame bar is fixed with a column corresponding to the electric push rod The column is connected to the piston rod end of the electric push rod through a coupling; at least two first guide rods 423 are fixed on the top surface of the frame bar 421, and a first guide hole 324 is provided on the bracket 322 corresponding to the first guide rod 423, and the support frame moves along the first guide hole through the first guide rod; a second guide hole 424 is provided on the first guide rod 423 that passes through the bottom surface of the frame bar; the pressing piece 440 includes a pressing plate 441, and a first guide hole 424 is fixed on the top surface of the pressing plate 441 corresponding to the second guide hole 424. The second guide rod 442 is inserted into the second guide hole 424, and the spring 430 is arranged in the second guide hole 424, providing the pressure piece with an elastic force to push downward, so that the pressure plate 441 blocks the lower oil port 411; a plurality of protrusions 314 for pushing the pressure piece are fixedly provided inside the oil receiving groove 312, and the protrusions are evenly spaced along the length direction of the oil receiving groove. The electric push rod drives the oil scooping structure to move downward, so that the protrusions can pass through the lower oil port and push the pressure piece to release the blockage; this structural design can make the bottom of the oil scooping groove in a blocked state when scooping oil, and can accommodate the scooped oil; when the oil scooping structure moves to the oil receiving groove and moves down to the protrusion pushing plate driven by the electric push rod, the bottom of the oil scooping groove is in an open state, and the scooped oil is discharged to the oil receiving groove and then flows into the oil collecting groove; the overall operation is simple and convenient, which can achieve effective oil-water separation, improve the efficiency and quality of separation, and thus improve the overall work efficiency.

[0052] Furthermore, the bottom of the oil receiving trough is tilted downward in the direction of the oil drain hole, and the lower end of the tilt is connected to the bottom end of the oil drain hole; the top surfaces of the bosses are of the same height, and the top ends are all arc-shaped raised structures; the structural design can facilitate the bosses to penetrate into the lower oil port and push the pressure plate, thereby releasing the blockage of the lower oil port and completing the drainage of the grease; and the grease flows along the inclined surface of the bottom of the oil receiving trough toward the oil drain hole, so that it can be smoothly transferred to the oil collecting tank.

[0053] The present invention is described through preferred embodiments. Those skilled in the art will appreciate that various modifications or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. The present invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A slaughterhouse wastewater treatment equipment, characterized by: It includes a filtering device, an oil removal device and an integrated treatment device arranged in sequence along the flow direction of sewage; The filter device is used to filter the sewage in at least two stages to remove particulate matter and impurities in the sewage, and can clean the filter components; The oil removal device is used to separate the upper layer of grease from sewage; The integrated treatment device is used to carry out biochemical treatment on the wastewater after deslagging and degreasing.

2. The slaughterhouse wastewater treatment equipment according to claim 1, characterized in that: The filtering device includes a first water tank, in which a first conveyor mesh belt and a second conveyor mesh belt are installed; The first conveyor mesh belt is located on the side of the second conveyor mesh belt away from the oil removal device, and the mesh aperture of the second conveyor mesh belt is smaller than the mesh aperture of the first conveyor mesh belt. The interior of the first water tank is divided into a water inlet area, a first purification area, and a second purification area by the first and second conveyor mesh belts. The side wall of the second purification area is provided with a first drain port for draining water to the oil removal device. The first conveyor mesh belt and the second conveyor mesh belt are both inclined, and the tops are bent toward one side of the oil removal device to form a straight section; A cleaning structure and a slag discharge structure are provided below the straight section. The cleaning structure is used to brush and clean the belt surface of the conveyor mesh belt, and the slag discharge structure is used to receive fallen impurities and send them to the outside.

3. The slaughterhouse wastewater treatment equipment according to claim 2, characterized in that: The cleaning structure includes a first brush roller and a second brush roller, which are rotatably mounted between two walls of the first water tank through bearings, and the first brush roller is located on a side of the second brush roller close to the oil removal device; A plurality of first bristle strips extending in the length direction are fixedly provided on the outer wall of the first brush roller, and the plurality of first bristle strips are distributed in a circular array around the axis of the first brush roller; a second bristle strip is fixedly provided on the outer wall of the second brush roller, and the second bristle strip is spirally wound around the outer wall of the second brush roller; the bristles on the top of the first brush roller and the second brush roller extend to abut against the belt surface of the conveyor mesh belt; Both cleaning structures are driven by the first motor.

4. The slaughterhouse wastewater treatment equipment according to claim 3, characterized in that: At least one electric heating pipe is provided in the straight section of the second conveyor mesh belt, for drying the mesh belt at the straight section.

5. The slaughterhouse wastewater treatment equipment according to claim 2, characterized in that: The slag discharge structure includes a trough and a spiral shaft; The trough is mounted between the two side walls of the first water trough and below the straight section; The side of the trough close to the oil removal device extends upward to a position higher than the top surface of the straight section, and the side of the trough away from the oil removal device extends upward to a surface that abuts against the conveyor belt. The corresponding first brush roller and second brush roller are located inside the trough. The bottom of the trough is a concave arc-shaped structure. The trough wall of the first water trough is provided with a slag discharge port corresponding to the concave portion of the trough. An extension cover is installed on the outside of the slag discharge port, and a feed port is provided at the bottom of the extension cover. The spiral shaft is rotatably mounted between the extension cover and the trough wall of the first water trough. The spiral shafts of the two spiral shafts are driven by the second motor. The rotating spiral shafts are used to send the filter residue collected at the bottom of the trough to the outside.

6. The slaughterhouse wastewater treatment equipment according to claim 5, characterized in that: The inner parts of the inclined bottom ends of the first conveyor mesh belt and the second conveyor mesh belt are rotatably supported by support rollers; The supporting roller includes a roller, gears are fixed on both ends of the roller, a tube strip is fixed on the outer wall of the gear, and the tube strip, the inner ring of the gear and the roller are connected; The outer wall of the roller is provided with a plurality of strip-shaped openings penetrating the inner wall, and the plurality of strip-shaped openings are distributed in a circular array around the axis of the roller; The pipe bodies at both ends are rotatably mounted on the wall of the first water trough through bearings. The pipe strips penetrate the wall of the first water trough and extend outward, and are connected to the return pipe. The gears are meshed with the gear rings of the conveyor belt for transmission. Two groups of reflux ports are provided on the wall of the first water tank corresponding to the two groups of reflux pipes, and one end of the reflux pipe away from the pipe strip is connected to the reflux port; The support roller of the first conveyor mesh belt is communicated with the first purification zone through a first return pipe, and the support roller of the second conveyor mesh belt is communicated with the second purification zone through a second return pipe.

7. The slaughterhouse wastewater treatment equipment according to claim 2, characterized in that: The oil removal device includes a second water tank and an oil scooping mechanism installed on the top of the second water tank; A water inlet connected to the first drain outlet is provided on the side wall of the second water tank near the filtering device; an oil collecting tank is fixedly provided on the outer wall of the second water tank, and a discharge pipe is connected to the bottom of the oil collecting tank, and an on-off valve is provided on the discharge pipe; an oil receiving tank is fixedly provided on the inner wall of the second water tank away from the water inlet, and the oil receiving tank is connected to the oil collecting tank through an oil discharge hole. The oil recovery mechanism is used to recover the grease on the upper layer of sewage and transport the grease to the oil receiving tank.

8. The slaughterhouse wastewater treatment equipment according to claim 7, characterized in that: The oil collecting mechanism includes a screw, which is mounted between the two end surfaces of the second water tank through a bearing, and is located above the oil receiving tank; A bracket is installed on the slide seat of the screw, an electric push rod is installed on the bracket, and an oil scooping structure is installed at the end of the piston rod of the electric push rod. The electric push rod is used to drive the oil scooping structure to move vertically to achieve the action of scooping and unloading grease.

9. The slaughterhouse wastewater treatment equipment according to claim 8, characterized in that: The oil scavenging structure includes an oil scavenging tank, a support frame, a spring, and a pressing piece; The bottom of the oil sump is provided with an oil outlet extending along the length direction; The support frame includes a frame bar, and pads are fixed on the bottom surfaces of both ends of the frame bar. The pads are connected to the oil sump through bolts, so that a movable gap is left between the frame bar and the bottom surface of the oil sump; A vertical column is fixed on the top surface of the frame bar corresponding to the electric push rod, and the vertical column is connected to the piston rod end of the electric push rod through a coupling; at least two first guide rods are fixed on the top surface of the frame bar, and a first guide hole is provided on the bracket corresponding to the first guide rod, and the support frame moves along the first guide hole through the first guide rod; The first guide rod is provided with a second guide hole penetrating the bottom surface of the frame bar; The pressing piece includes a pressing plate, a second guide rod is fixedly provided on the top surface of the pressing plate corresponding to the second guide hole, the second guide rod is inserted into the second guide hole, and a spring is provided in the second guide hole to provide an elastic force for pushing the pressing piece downward, so that the pressing plate blocks the lower oil port; A number of protrusions for pushing the pressure piece are fixed inside the oil receiving tank. The protrusions are evenly spaced along the length of the oil receiving tank. The electric push rod drives the oil scooping structure downward, allowing the protrusions to penetrate the lower oil port, push the pressure piece, and release the blockage.

10. The slaughterhouse wastewater treatment equipment according to claim 9, characterized in that: The bottom of the oil receiving tank is tilted downward toward the oil drain hole, with the lower end of the tilt connected to the bottom of the oil drain hole. The top surfaces of the convex columns are of the same height, and the top ends are all arc-shaped convex structures.

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