A sewage tank with waste oil recovery and sludge blowing functions

Abstract

The invention belongs to the technical field of oily wastewater treatment, specifically a sewage tank with dirty oil recovery and sludge purging functions, including a tank body, a steam purge pipe for purging sludge is arranged at the bottom of the inner cavity of the tank body, a sludge discharge pipe for discharging sludge and a sewage discharge pipe for discharging sewage are arranged on the bottom wall of the tank body, and a dirty oil recovery pipe for discharging dirty oil is arranged on the top of the tank body; a lifting and stirring assembly is installed in the inner cavity of the tank body and stirs the dirty oil water, and the lifting and stirring assembly includes a lifting cross plate in the shape of a "cross" and a stirring blade rotating at the bottom of the cross plate. The invention continuously turns and squeezes the sludge in the oily sludge water body, promotes the effective and gradual release and separation of the oil contained in the sludge, so that the dirty oil and sludge can be recovered more efficiently and separately, and the recycling rate of resources is improved.

Description

Technical Field

[0001] The invention relates to the technical field of oily sewage treatment, in particular to a sewage tank with the functions of waste oil recovery and sludge blowing. Background Art

[0002] Due to the increasing requirements for environmental protection, automation and intelligence, oily wastewater discharged from petrochemical storage tanks must be transported in a closed manner using sewage pipelines + horizontal sewage tanks to avoid air pollution from volatile organic gases in the sewage.

[0003] Conventional horizontal sewage tanks separate the dirty oil and sludge by subjecting the oily sludge water to a sedimentation process. Although the dirty oil in the sewage tank floats on the water surface and the sludge impurities in the sewage tank accumulate at the bottom of the sewage tank, the oil contained in the sludge impurities often cannot be separated completely from them by simple sedimentation. Therefore, it is necessary to develop a sewage tank with dirty oil recovery and sludge blowing functions. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0006] A sewage tank with waste oil recovery and sludge blowing functions, comprising:

[0007] A tank body, wherein the bottom of the inner cavity of the tank body is provided with a steam purge pipe for purging sludge, the bottom wall of the tank body is provided with a sludge discharge pipe for discharging sludge and a sewage discharge pipe for discharging sewage connected to the inner cavity thereof, and the top of the tank body is provided with a waste oil recovery pipe for discharging waste oil connected to the inner cavity thereof;

[0008] A lifting and stirring assembly is installed in the inner cavity of the tank body and stirs the dirty oily water. The lifting and stirring assembly includes a lifting cross plate in a "cross" shape and a stirring blade rotating at the bottom of the cross plate;

[0009] A reciprocating extrusion assembly is installed in the inner cavity of the tank body and is arranged symmetrically with respect to the lifting and stirring assembly. The reciprocating extrusion assembly includes a first extrusion plate and a second extrusion plate symmetrically used for extruding the oily sludge. When the cross plate is lifted and lowered, the first extrusion plate and the second extrusion plate are driven to move toward each other and extrude the oily sludge.

[0010] The stirring and mud-turning assembly is installed in the inner cavity of the tank body and below the reciprocating extrusion assembly. The stirring and mud-turning assembly includes mud-turning blades for turning the oil-containing sludge at the bottom of the inner cavity of the tank body. When the first extrusion plate and the second extrusion plate gradually approach, they drive the mud-turning blades to gradually rotate and rise, and the mud-turning blades drive the oil-containing sludge to be turned between the first extrusion plate and the second extrusion plate.

[0011] As a preferred solution of a sewage tank with oil sludge recovery and sludge purging functions according to the present invention, wherein: the steam purging pipe is arranged at a distance from the mud-turning blades. The side wall of the steam purging pipe is provided with obliquely arranged air outlet holes at equal intervals. A first filter plate is arranged at the outer end of each air outlet hole;

[0012] The top wall of the tank body is provided with a feeding pipe for feeding oil-containing sludge, which communicates with its inner cavity;

[0013] A second filter plate is arranged at the upper end of the sewage discharge pipe;

[0014] The surface of the bottom of the inner cavity of the tank body is symmetrically inclined from front to back, and the horizontal axis area in the middle is lower. The upper ends of the sludge discharge pipe and the sewage discharge pipe are both located in the middle area of the bottom wall of the inner cavity of the tank body.

[0015] As a preferred solution of a sewage tank with oil sludge recovery and sludge purging functions according to the present invention, wherein: the lifting and stirring assembly further includes fixing frames symmetrically arranged at the front and back of the bottom of the cross plate. The top wall of the inner cavity of the fixing frame is rotatably provided with a vertical sleeve rod passing through the bottom wall of the fixing frame. The bottom wall of the inner cavity of the fixing frame is rotatably penetrated with a vertical hollow sleeve. The rod body of the sleeve rod passes through the inside of the sleeve at an interval. Stirring blades are evenly arranged on the outer sides of the rod bodies of the sleeve and the sleeve rod. A sharp cone is arranged on the side wall of each stirring blade;

[0016] A lower bevel gear is arranged at the upper end of the sleeve, an upper bevel gear is arranged at the upper end of the sleeve rod, and a driving rod is rotatably penetrated through the inner side wall of the fixing frame. A transmission bevel gear for meshing with the lower bevel gear and the upper bevel gear is arranged at one end of the driving rod;

[0017] A first gear is arranged at the other end of the driving rod, and first racks vertically meshing with the first gear are fixedly arranged on the front and back side walls of the inner cavity of the tank body.

[0018] As a preferred solution of a sewage tank with oil sludge recovery and sludge purging functions according to the present invention, wherein: a "冂"-shaped equipment rack is arranged at the top of the tank body. A vertical electric lifting cylinder is fixedly arranged on the inner top wall of the equipment rack. The output shaft of the electric lifting cylinder passes through the top wall of the tank body along a straight axis and is connected to the center of the top of the cross plate.

[0019] As a preferred solution of the sewage tank with waste oil recovery and sludge blowing functions described in the present invention, the reciprocating extrusion assembly also includes a second vertical rack fixedly arranged on the left and right sides of the bottom of the cross plate, and the left and right side walls of the inner cavity of the tank body are located above the first extrusion plate and the second extrusion plate and are rotatably provided with a transverse positive and negative double-headed screw, and one end of the positive and negative double-headed screw is provided with a second gear meshing with the second rack;

[0020] The left and right sections of each of the forward and reverse double-ended screw rods are respectively screwed to the upper ends of the first extrusion plate and the second extrusion plate that pass through the same side;

[0021] A third extrusion plate is arranged on one side of the two second extrusion plates close to each other through a connecting frame, and when the cross plate is lifted or lowered, the two third extrusion plates are driven to move toward each other and extrude the oily sludge;

[0022] The left and right side walls of the inner cavity of the tank body, the left and right sides of the first extrusion plate, the side of the second extrusion plate close to the first extrusion plate, and the sides of the two third extrusion plates close to each other are all provided with sharp teeth, and the two adjacent sharp teeth bite each other when squeezing the oily sludge.

[0023] As a preferred solution of the sewage tank with waste oil recovery and sludge blowing functions described in the present invention, wherein: the inner cavity of the tank body is located above the positive and negative double-headed screws and is fixed with a bilaterally symmetrical hollow fixed platform, the upper surface and the bottom of the fixed platform are both provided with openings, and the upper surface of the fixed platform is gradually inclined and lowered toward the position where the lifting and stirring assembly is located;

[0024] The forward and reverse double-ended screw is rotatably arranged below the fixed platform, and a guide rod parallel to the forward and reverse double-ended screw is fixedly arranged at the bottom of the fixed platform, and the rod body of the guide rod slides through the upper ends of the first extrusion plate and the second extrusion plate.

[0025] As a preferred solution of the sewage tank with waste oil recovery and sludge blowing functions described in the present invention, the stirring and turning mud assembly also includes a linkage rod rotatably arranged at the front and rear positions of the bottom of the first extrusion plate and the second extrusion plate on the same side, the bottoms of the two adjacent linkage rods rotate together on the top of the mounting plate, the mounting plate is provided with two and its side wall is rotated together and penetrated with a horizontal rotating rod, the rotating rod is provided with two and the rod body is surrounded by mud turning blades;

[0026] A third vertical rack is arranged at the left and right side walls of the inner cavity of the tank body near the end of the rotating rod, and a third gear meshing with the third rack is arranged at the end of the rotating rod.

[0027] As a preferred solution of a sewage tank with waste oil recovery and sludge blowing functions described in the present invention, the tops of the two adjacent linkage rods are slidably arranged together to form a limited sliding frame, the upper end of the linkage rod is rotatably provided with a sliding rod, the rod body of the sliding rod slides on the inner side of the limited sliding frame, and the end of the sliding rod is rotatably connected to the bottom of the first extrusion plate and the second extrusion plate.

[0028] The beneficial effect of the present invention is that the sludge in the oily sludge water body is continuously turned over and squeezed, so that the oil contained in the sludge is effectively and gradually released and separated, so that the waste oil and sludge can be recovered separately and more efficiently, thereby improving the recycling rate of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 It is a schematic diagram of the structure of the internal components of the tank cross section of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the steam purge pipe of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure inside the cross section of the steam purge pipe of the present invention;

[0034] Figure 5 It is a structural schematic diagram of the lifting and stirring assembly of the present invention;

[0035] Figure 6 For the present invention Figure 5 A schematic diagram of the structure in a side view direction;

[0036] Figure 7 It is a schematic structural diagram of the reciprocating extrusion assembly of the present invention;

[0037] Figure 8 For the present invention Figure 7 Exploded diagram of

[0038] Fig. 9 This is a schematic diagram of the structure of the mud stirring and turning assembly of the present invention;

[0039] Fig.10 For the present invention Fig. 9 Schematic diagram of the structure from a top-down perspective;

[0040] Fig.11 It is a schematic structural diagram of the cross plate of the present invention when it descends.

[0041] In the figure: tank body 100, steam purge pipe 101, air outlet 102, first filter plate 103, injection pipe 104, sludge discharge pipe 105, sewage discharge pipe 106, second filter plate 107, dirty oil recovery pipe 108, recovery pump 109, vent pipe 110, oil and gas recovery pipe 111, nitrogen pipe 112, control panel 113, lifting and stirring assembly 200, cross plate 201, fixing frame 202, sleeve 203, sleeve rod 204, stirring blade 205, pointed cone 206, lower bevel gear 207, upper bevel gear 208, driving rod 209, transmission bevel gear 210, first gear 211, first rack 212, equipment frame 213, electric lifting cylinder 214, the first guide frame 215, the first roller 216, the reciprocating extrusion assembly 300, the second rack 301, the forward and reverse double-ended screw 302, the second gear 303, the first extrusion plate 304, the second extrusion plate 305, the connecting frame 306, the third extrusion plate 307, the sharp teeth 308, the fixed platform 309, the through-hole 310, the guide rod 311, the second guide frame 312, the second roller 313, the stirring and turning mud assembly 400, the linkage rod 401, the mounting plate 402, the rotating rod 403, the turning mud blade 404, the third rack 405, the third gear 406, the third guide frame 407, the third roller 408, the limit sliding frame 409, and the sliding rod 410. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0043] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0045] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0046] See also Figure 1-Figure 11, which shows a schematic diagram of the structure of a sewage tank with waste oil recovery and sludge blowing functions according to the present invention, please refer to Figure 1-Figure 11 , a sewage tank with waste oil recovery and sludge blowing functions is introduced in detail.

[0047] A sewage tank with waste oil recovery and sludge blowing functions, comprising a tank body 100, a lifting and stirring assembly 200, a reciprocating extrusion assembly 300 and a stirring and mud turning assembly 400;

[0048] Please refer again Figures 1 to 4 The bottom of the inner cavity of the tank body 100 is provided with a steam purge pipe 101 for purging sludge, the bottom wall of the tank body 100 is provided with a sludge discharge pipe 105 for discharging sludge and a sewage discharge pipe 106 for discharging sewage, and the top of the tank body 100 is provided with an oil recovery pipe 108 for discharging oil, and the lower end of the oil recovery pipe 108 is provided with a filter plate for properly blocking sludge from entering therein; the other end of the oil recovery pipe 108 is connected to a recovery pump 109. The output end of the recovery pump 109 is connected to the dirty oil storage and recovery device, and the top of the tank body 100 is provided with a vent pipe 110, an oil and gas recovery pipe 111 and a nitrogen pipe 112 connected to its inner cavity, wherein the oil and gas recovery pipe 111 is also connected to the oil and gas recovery device, and the nitrogen pipe 112 is connected to the nitrogen input device. The dirty oil storage and recovery device, the oil and gas recovery device and the nitrogen input device are not shown in the figure. Each pipeline is provided with a corresponding valve. When the corresponding pipeline needs to be used, the required valve is opened;

[0049] The front side wall of the tank body 100 is provided with a control panel 113, and the control panel 113 is provided with a display and a plurality of buttons for connecting and controlling the opening and closing of various powered devices;

[0050] The steam purge pipe 101 is spaced apart from the mud turning blades 404, and the side wall of the steam purge pipe 101 is provided with oblique air outlet holes 102 at equal intervals, and the outer end of each of the air outlet holes 102 is provided with a first filter plate 103, and the first filter plate 103 is provided to appropriately prevent the sludge from backflowing into the steam purge pipe 101, and the other end of the steam purge pipe 101 is connected to a steam conveying device, and the steam is conveyed into the inner cavity of the tank body 100 through the steam purge pipe 101, and is sprayed out through the air outlet holes 102 to appropriately purge the sludge impurities at the bottom of the tank body 100, and then the sludge is discharged through the sludge discharge pipe 105;

[0051] The top wall of the tank body 100 is provided with an injection pipe 104 connected to the inner cavity thereof for feeding the oily sludge. The outer end of the injection pipe 104 is also connected to other equipment, such as a device for conveying sludge. The oily sludge is injected into the inner cavity of the tank body 100 through the injection pipe 104 for further processing.

[0052] The upper end of the sewage pipe 106 is provided with a second filter plate 107, and the second filter plate 107 allows sewage to be discharged through the sewage pipe 106, while reducing the discharge of sludge through the sewage pipe 106, and first discharges sewage and then discharges sludge;

[0053] The inner cavity bottom surface of the tank body 100 is tilted symmetrically in front and back, and the horizontal axis area in the middle is lower. The upper ends of the sludge discharge pipe 105 and the sewage discharge pipe 106 are both located in the middle area of ​​the inner cavity bottom wall of the tank body 100. When sewage and sludge are discharged respectively, the sludge and sewage flow along the tilted inner cavity bottom surface of the tank body 100 to the upper ends of the sludge discharge pipe 105 and the sewage discharge pipe 106;

[0054] Please refer again Figure 2 , Figure 5 , Figure 6 and Fig.11 A lifting and stirring assembly 200 is installed in the inner cavity of the tank body 100 and stirs the dirty oil water. The lifting and stirring assembly 200 includes a lifting cross plate 201 in a "cross" shape and a stirring blade 205 rotating at the bottom of the cross plate 201;

[0055] The lifting stirring assembly 200 also includes a fixing frame 202 symmetrically arranged at the bottom of the cross plate 201, the top wall of the inner cavity of the fixing frame 202 is rotatably provided with a vertical sleeve rod 204 penetrating the bottom wall of the fixing frame 202, the bottom wall of the inner cavity of the fixing frame 202 is rotatably provided with a vertical hollow sleeve 203, the shaft gap of the sleeve rod 204 penetrates the inner side of the sleeve 203, the outer sides of the shafts of the sleeve 203 and the sleeve rod 204 are evenly provided with stirring blades 205, and the side wall of each stirring blade 205 is provided with a pointed cone 206. When the stirring blade 205 rotates, due to the small tip area of ​​the pointed cone 206, when it contacts with the oily sludge, the pressure per unit area is relatively large, which is conducive to breaking the sludge and better stirring;

[0056] A lower bevel gear 207 is provided at the upper end of the sleeve 203, an upper bevel gear 208 is provided at the upper end of the sleeve rod 204, a driving rod 209 is rotatably provided on the inner side wall of the fixing frame 202, and a transmission bevel gear 210 meshing with the lower bevel gear 207 and the upper bevel gear 208 is provided at one end of the driving rod 209. When the driving rod 209 and the transmission bevel gear 210 rotate, the sleeve 203 and the sleeve rod 204 are driven to rotate respectively through the lower bevel gear 207 and the upper bevel gear 208, so that the stirring blades 205 located on the sleeve 203 and the sleeve rod 204 rotate respectively, and the two rotate in opposite directions, so as to better stir the oily sludge;

[0057] The other end of the driving rod 209 is provided with a first gear 211. Vertically arranged first racks 212 that mesh with the first gear 211 are fixedly arranged on the front and rear side walls of the inner cavity of the tank body 100. When the cross plate 201 moves up and down, it drives the driving rod 209 to move up and down. The driving rod 209 rotates through the first gear 211 and the first racks 212. A "冂"-shaped first guide frame 215 is fixedly arranged on the rod body of the driving rod 209 near the first gear 211. The first gear 211 is located inside the first guide frame 215. First rollers 216 are rotatably arranged at equal intervals from top to bottom on the inner side of the first guide frame 215. The outer sides of the first rollers 216 are in rolling contact with the side of the first rack 212 away from its teeth. When the driving rod 209 moves up and down and rotates, the first rack 212 can always be meshed with the first gear 211 through the arranged first guide frame 215 and first rollers 216. Moreover, when the first guide frame 215 moves up and down, the friction with the side wall of the first rack 212 is also reduced through the arranged first rollers 216 on it;

[0058] A "冂"-shaped equipment frame 213 is arranged on the top of the tank body 100. A vertical electric lifting cylinder 214 is fixedly arranged on the inner top wall of the equipment frame 213. The output shaft of the electric lifting cylinder 214 passes through the top wall of the tank body 100 along a straight axis and is connected to the center of the top of the cross plate 201. Starting the electric lifting cylinder 214, its output shaft moves up and down and drives the cross plate 201 to move up and down;

[0059] Please refer to again Figure 2 、 Figure 7 、 Figure 8 and Fig.11 ,a reciprocating extrusion assembly 300, which is installed in the inner cavity of the tank body 100 and is symmetrically arranged about the lifting and stirring assembly 200. The reciprocating extrusion assembly 300 includes symmetric first extrusion plates 304 and second extrusion plates 305 for extruding the oily sludge. When the cross plate 201 moves up and down, it drives the first extrusion plate 304 and the second extrusion plate 305 to move towards each other and extrude the oily sludge;

[0060] The reciprocating extrusion assembly 300 further includes vertical second racks 301 fixedly arranged on the left and right sides of the bottom of the cross plate 201. Horizontally arranged positive and negative double-headed lead screws 302 are rotatably arranged on the left and right side walls of the inner cavity of the tank body 100 above the first extrusion plate 304 and the second extrusion plate 305. One end of the positive and negative double-headed lead screw 302 is provided with a second gear 303 that meshes with the second rack 301. When the cross plate 201 moves up and down, it also drives the second rack 301 to move up and down accordingly, thereby driving the positive and negative double-headed lead screw 302 to rotate through the second gear 303;

[0061] A "冂"-shaped second guide frame 312 is fixedly arranged on the rod body of the positive and negative double-headed lead screw 302 near the second rack 301. The second rack 301 is located inside the second guide frame 312. Second rollers 313 are rotatably arranged at equal intervals from top to bottom inside the second guide frame 312. The outer sides of the second rollers 313 are in rolling contact with the side of the second rack 301 away from its teeth. When the second rack 301 moves up and down, the second guide frame 312 and the second rollers 313 provided can make the second rack 301 always mesh with the second gear 303. Moreover, when the second rack 301 moves up and down, the second rollers 313 provided will also reduce the friction force with the side wall of the second rack 301;

[0062] The left and right section rod bodies of each positive and negative double-headed lead screw 302 are respectively screwed through the upper ends of the first pressing plate 304 and the second pressing plate 305 on the same side; in the inner cavity of the tank body 100, hollow fixing platforms 309 that are symmetric left and right are fixedly arranged above the positive and negative double-headed lead screw 302. The positive and negative double-headed lead screw 302 is rotatably arranged below the fixing platform 309. A guide rod 311 parallel to the positive and negative double-headed lead screw 302 is fixedly arranged at the bottom of the fixing platform 309. The rod body of the guide rod 311 slidably penetrates through the upper ends of the first pressing plate 304 and the second pressing plate 305. When the positive and negative double-headed lead screw 302 rotates, due to the reverse thread纹路走向 (thread纹路走向 should be "thread directions") on the left and right section rod bodies of the positive and negative double-headed lead screw 302, the first pressing plate 304 and the second pressing plate 305 on the same side move towards each other. After squeezing the oily sludge, it is beneficial to squeeze out the oil in the oily sludge;

[0063] A third pressing plate 307 is arranged on one side where the two second pressing plates 305 are close to each other through a connecting frame 306. When the cross plate 201 moves up and down, it drives the two third pressing plates 307 to move towards each other and squeeze the oily sludge; since the two second pressing plates 305 also move towards each other, setting the third pressing plate 307 can also achieve squeezing of the oily sludge. Moreover, when the cross plate 201 rises, the two third pressing plates 307 move closer to each other to squeeze the oily sludge; when the cross plate 201 descends, the two third pressing plates 307 move away from each other, and it will not prevent the stirring blades 205 and the pointed cones 206 from descending;

[0064] The left and right side walls of the inner cavity of the tank body 100, the left and right sides of the first extrusion plate 304, the side of the second extrusion plate 305 close to the first extrusion plate 304, and the sides of the two third extrusion plates 307 close to each other are all provided with sharp teeth 308. The two adjacent sharp teeth 308 bite each other when squeezing the oily sludge. Since the tip area of ​​the sharp teeth 308 is small, the pressure per unit area is large when contacting the oily sludge, which is conducive to breaking the oily sludge and squeezing the sludge better. The width of the front and rear side walls of the first extrusion plate 304, the second extrusion plate 305 and the third extrusion plate 307 is equal to the distance between the front and rear side walls of the inner cavity of the tank body 100;

[0065] The upper surface and the bottom of the fixed platform 309 are both provided with openings 310. The upper surface of the fixed platform 309 is gradually inclined and lowered toward the position where the lifting and stirring assembly 200 is located. Since the openings 310 are provided at the bottom and the top of the fixed platform 309, when the oily sludge is squeezed, the fixed platform 309 will not hinder the expansion of the oily sludge.

[0066] Please refer again Figure 2 , Figures 9 to 11 The stirring and turning mud assembly 400 is installed in the inner cavity of the tank body 100 and is located below the reciprocating extrusion assembly 300. The stirring and turning mud assembly 400 includes a turning mud blade 404 for turning the oily sludge at the bottom of the inner cavity of the tank body 100. When the first extrusion plate 304 and the second extrusion plate 305 gradually approach each other, the turning mud blade 404 is driven to gradually rotate and rise, and the turning mud blade 404 drives the oily sludge to turn between the first extrusion plate 304 and the second extrusion plate 305;

[0067] The stirring mud turning assembly 400 also includes a linkage rod 401 rotatably arranged at the front and rear positions of the bottom of the first extrusion plate 304 and the second extrusion plate 305 on the same side, the bottoms of the two adjacent linkage rods 401 are rotated together on the top of the mounting plate 402, the mounting plate 402 is provided with two horizontal rotating rods 403 which are rotated through the side wall together, the rotating rods 403 are provided with two, and mud turning blades 404 are arranged around the rod bodies; the mud turning blades 404 are always arranged at a distance from any components during the lifting and rotating process, so as to avoid collision damage;

[0068] On the left and right side walls of the inner cavity of the tank body 100 near the ends of the rotating rod 403, there are vertically arranged third racks 405. At the ends of the rotating rod 403, there are third gears 406 meshing with the third racks 405. Near the third racks 405 on the rod body of the rotating rod 403, there is a "冂"-shaped third guide frame 407 fixedly arranged. The third racks 405 are located inside the third guide frame 407. Inside the third guide frame 407, third rollers 408 are rotatably arranged at equal intervals from top to bottom. The outer sides of the third rollers 408 are in rolling contact with the sides of the third racks 405 away from their teeth. When the rotating rod 403 moves up and down and rotates, through the arranged third guide frame 407 and third rollers 408, the third racks 405 can always be meshed with the third gears 406. Moreover, when the third guide frame 407 moves up and down, the arranged third rollers 408 will also reduce the friction force with the side walls of the third racks 405; At the tops of two adjacent linkage rods 401, there is a limit sliding frame 409 slidingly arranged in common. One end of the limit sliding frame 409 is fixed on the side wall of the inner cavity of the tank body 100. At the upper ends of the linkage rods 401, there are sliding rods 410 rotatably arranged. The rod bodies of the sliding rods 410 slide inside the limit sliding frame 409. The ends of the sliding rods 410 are rotatably connected to the bottoms of the first pressing plate 304 and the second pressing plate 305. When the first pressing plate 304 and the second pressing plate 305 move towards each other, they drive the linkage rods 401 at their bottoms to rotate, thereby driving the mounting plate 402 to move up and down accordingly. At this time, the third gears 406 drive the rotating rod 403 and the mud turning blades 404 to rotate along the third racks 405. The mud turning blades 404 turn the sludge-containing part at the bottom of the inner cavity of the tank body 100. Moreover, when the first pressing plate 304 and the second pressing plate 305 gradually approach, the mud turning blades 404 are in a gradually rising and rotating state, and they will also drive the oil-containing sludge to be turned to between the first pressing plate 304 and the second pressing plate 305, which is more conducive to the first pressing plate 304 and the second pressing plate 305 squeezing the sludge-containing part.

[0069] In the specific use process, the oil-containing sludge water to be treated is sent into the inner cavity of the tank body 100 through the feeding pipe 104. The electric lifting cylinder 214 is started to drive the cross plate 201 and the driving rod 209 to move up and down. Through the first gear 211 and the first rack 212, the driving rod 209 is rotated. Through the lower bevel gear 207 and the upper bevel gear 208, the sleeve 203 and the sleeve rod 204 are respectively driven to rotate, so that the stirring blades 205 located on the sleeve 203 and the sleeve rod 204 rotate respectively, and their rotation directions are opposite. When the stirring blades 205 rotate, due to the small tip area of the sharp cone 206, when contacting the oil-containing sludge, the pressure per unit area is relatively large, so it is beneficial to break the sludge and better stir the oil-containing sludge;

[0070] The cross plate 201 will also drive the second rack 301 to rise and fall accordingly, thereby driving the forward and reverse double-ended screw 302 to rotate through the second gear 303. Since the thread patterns on the left and right sections of the forward and reverse double-ended screw 302 are in opposite directions, the first extrusion plate 304 and the second extrusion plate 305 on the same side move toward each other, which is conducive to squeezing out the oil in the oily sludge after squeezing the oily sludge. Since the two second extrusion plates 305 also move toward each other, the two third extrusion plates 307 at this time can also achieve the extrusion of the oily sludge. During the extrusion, since the tip area of ​​the sharp teeth 308 is small, when in contact with the oily sludge, the pressure per unit area is relatively large, which is conducive to breaking the oily sludge and squeezing the sludge better.

[0071] When the first extrusion plate 304 and the second extrusion plate 305 move toward each other, the linkage rod 401 at the bottom thereof is driven to rotate, thereby driving the mounting plate 402 to move up and down accordingly. At this time, the third gear 406 drives the rotating rod 403 and the mud turning blade 404 to rotate along the third rack 405. The mud turning blade 404 turns over the sludge at the bottom of the inner cavity of the tank body 100. Moreover, when the first extrusion plate 304 and the second extrusion plate 305 gradually approach each other, the mud turning blade 404 is in a state of gradually rising and rotating, and also drives the oily sludge to turn over to between the first extrusion plate 304 and the second extrusion plate 305, which is more conducive to the first extrusion plate 304 and the second extrusion plate 305 to squeeze the sludge.

[0072] After the oily sludge water body is continuously squeezed and stirred for a period of time, the movement of the components is stopped. After the oily sludge water body is stationary and settled, the dirty oil floats on the surface of the water body, and the recovery pump 109 is started to discharge the dirty oil through the dirty oil recovery pipe 108. The generated oil gas is discharged and collected through the oil gas recovery pipe 111. After the sewage pipe 106 is opened, the sewage is properly discharged. A second filter plate 107 is provided at the upper end of the sewage pipe 106 so that the sewage can be discharged through the sewage pipe 106, while reducing the discharge of sludge through the sewage pipe 106. Then, steam is transported into the inner cavity of the tank body 100 through the steam purge pipe 101, and is sprayed through the air outlet 102 to properly purge the sludge impurities at the bottom of the tank body 100, and then the sludge is discharged through the sludge pipe 105, thereby realizing the recovery of dirty oil and sludge.

[0073] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A sewage tank with waste oil recovery and sludge blowing functions, characterized in that: include: A tank body (100), wherein a steam purge pipe (101) for purging sludge is disposed at the bottom of the inner cavity of the tank body (100), a sludge discharge pipe (105) for discharging sludge and a sewage discharge pipe (106) for discharging sewage, which are connected to the inner cavity of the tank body (100), and a waste oil recovery pipe (108) for discharging waste oil, which is connected to the inner cavity of the tank body (100); A lifting and stirring assembly (200) is installed in the inner cavity of the tank body (100) and stirs the dirty oily water. The lifting and stirring assembly (200) comprises a lifting cross plate (201) in the shape of a cross and a stirring blade (205) rotating at the bottom of the cross plate (201); A reciprocating extrusion assembly (300) is installed in the inner cavity of the tank body (100) and is arranged symmetrically with respect to the lifting and stirring assembly (200). The reciprocating extrusion assembly (300) comprises a first extrusion plate (304) and a second extrusion plate (305) which are symmetrically used for extruding the oily sludge. When the cross plate (201) is lifted or lowered, the first extrusion plate (304) and the second extrusion plate (305) are driven to move towards each other and extrude the oily sludge. The reciprocating extrusion assembly (300) also comprises a second vertical rack (301) fixedly arranged on the left and right sides of the bottom of the cross plate (201). The left and right side walls of the inner cavity of the tank body (100) are located above the first extrusion plate (304) and the second extrusion plate (305) and are rotatably provided with a transverse double-ended screw (302). One end of the double-ended screw (302) is provided with a second gear (303) which meshes with the second rack (301). The left and right sections of the rod body of each of the forward and reverse double-ended screw rods (302) are respectively screwed to the upper ends of the first extrusion plate (304) and the second extrusion plate (305) on the same side; a third extrusion plate (307) is provided on the side where the two second extrusion plates (305) are close to each other through a connecting frame (306); when the cross plate (201) is raised or lowered, the two third extrusion plates (307) are driven to move towards each other and extrude the oily sludge; the inner cavity of the tank body (100) is located above the forward and reverse double-ended screw rods (302), and a left-right symmetrical hollow fixed platform (309) is fixedly provided; the forward and reverse double-ended screw rods (302) are rotatably provided below the fixed platform (309); a guide rod (311) parallel to the forward and reverse double-ended screw rods (302) is fixedly provided at the bottom of the fixed platform (309); the rod body of the guide rod (311) slides through the upper ends of the first extrusion plate (304) and the second extrusion plate (305); The stirring and turning mud assembly (400) is installed in the inner cavity of the tank body (100) and is located below the reciprocating extrusion assembly (300). The stirring and turning mud assembly (400) includes a turning mud blade (404) for turning the oily sludge at the bottom of the inner cavity of the tank body (100). When the first extrusion plate (304) and the second extrusion plate (305) gradually approach each other, the turning mud blade (404) is driven to gradually rotate and rise, and the turning mud blade (404) drives the oily sludge to be turned between the first extrusion plate (304) and the second extrusion plate (305). The stirring and turning mud assembly (400) also includes a linkage rod (401) that is rotatably arranged at the front and rear positions of the bottoms of the first extrusion plate (304) and the second extrusion plate (305) on the same side. The bottoms of the two adjacent linkage rods (401) rotate together on the top of the mounting plate (402). The mounting plate ( The tank body (100) is provided with two horizontal rotating rods (403) which are rotatable through the side walls thereof, and two rotating rods (403) are provided, and mud-turning blades (404) are arranged around the rod bodies; the left and right side walls of the inner cavity of the tank body (100) are provided with vertical third racks (405) near the ends of the rotating rods (403), and the ends of the rotating rods (403) are provided with third gears (406) which mesh with the third racks (405); the tops of the two adjacent linkage rods (401) are slidably provided with a limited sliding frame (409), and the upper ends of the linkage rods (401) are rotatably provided with a sliding rod (410), the rod body of the sliding rod (410) slides on the inner side of the limited sliding frame (409), and the ends of the sliding rods (410) are rotatably connected to the bottoms of the first extrusion plate (304) and the second extrusion plate (305).

2. A sewage tank with waste oil recovery and sludge blowing functions according to claim 1, characterized in that: The steam purge pipe (101) and the mud turning blade (404) are arranged at a distance, and the side wall of the steam purge pipe (101) is provided with oblique air outlet holes (102) at equal intervals, and a first filter plate (103) is provided at the outer end of each air outlet hole (102); The top wall of the tank body (100) is provided with an injection pipe (104) connected to the inner cavity thereof and used for feeding the oily sludge; A second filter plate (107) is provided at the upper end of the sewage pipe (106); The inner cavity bottom surface of the tank body (100) is arranged to be symmetrically inclined in the front and rear direction, and the horizontal axis area in the middle is lower. The upper ends of the sludge discharge pipe (105) and the sewage discharge pipe (106) are both located in the middle area of ​​the inner cavity bottom wall of the tank body (100).

3. The sewage tank with waste oil recovery and sludge blowing functions according to claim 1 is characterized by: The lifting and stirring assembly (200) further includes fixing frames (202) symmetrically arranged before and after at the bottom of the cross plate (201). A vertical sleeve rod (204) passing through the bottom wall of the fixing frame (202) is rotatably arranged on the top wall of the inner cavity of the fixing frame (202). A vertical hollow sleeve (203) is rotatably penetrated through the bottom wall of the inner cavity of the fixing frame (202). The rod body of the sleeve rod (204) passes through the inside of the sleeve (203) with a gap. Stirring blades (205) are uniformly arranged on the outer sides of the rod bodies of the sleeve (203) and the sleeve rod (204). A sharp cone (206) is arranged on the side wall of each stirring blade (205). A lower bevel gear (207) is arranged at the upper end of the sleeve (203). An upper bevel gear (208) is arranged at the upper end of the sleeve rod (204). A driving rod (209) is rotatably penetrated through the inner side wall of the fixing frame (202). A transmission bevel gear (210) meshing with the lower bevel gear (207) and the upper bevel gear (208) is arranged at one end of the driving rod (209). A first gear (211) is arranged at the other end of the driving rod (209). Vertical first racks (212) meshing with the first gear (211) are fixedly arranged on the front and rear side walls of the inner cavity of the tank body (100).

4. The sewage tank with waste oil recovery and sludge blowing functions according to claim 1 is characterized by: An equipment rack (213) in the shape of "冂" is arranged at the top of the tank body (100). A vertical electric lifting cylinder (214) is fixedly arranged on the inner top wall of the equipment rack (213). The output shaft of the electric lifting cylinder (214) passes through the top wall of the tank body (100) along a straight axis and is connected to the center of the top of the cross plate (201).

5. The sewage tank with waste oil recovery and sludge blowing functions according to claim 1 is characterized by: Sharp teeth (308) are arranged on the left and right side walls of the inner cavity of the tank body (100), on the left and right sides of the first pressing plate (304), and on the side of the second pressing plate (305) close to the first pressing plate (304). The two sharp teeth (308) on the side where the two third pressing plates (307) are close to each other bite each other when squeezing the oily sludge.

6. A sewage tank with waste oil recovery and sludge blowing functions according to claim 5, characterized in that: Through openings (310) are arranged on both the upper surface and the bottom surface of the fixed platform (309). The upper surface of the fixed platform (309) is gradually inclined and lowered towards the position where the lifting and stirring assembly (200) is located.

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