An oil-containing sludge harmless treatment device and treatment process

Abstract

The present application relates to sludge treatment technical field, specifically to a kind of oil-containing sludge innocuous treatment device and treatment process, the oil-containing sludge innocuous treatment device, including rack, filter plate and poking block;Two parallel slide rails are provided on the rack, each slide rail is correspondingly provided with a support rod, the support rod and slide rail are all extended along front-back direction;The filter plate is vertically placed, and the left and right sides of each filter plate are provided with lug plate, each filter plate is supported and arranged on the left and right two slide rails by two lug plates;The poking block is slidably arranged on each support rod, and each poking block is provided with clamping piece, the clamping piece can clamp lug plate and drive lug plate to move up and down relative to slide rail;When poking block slides along support rod and drives filter plate to slide forward and backward and away from adjacent filter plate by clamping piece, clamping piece makes lug plate move upward, so that lug plate has interval with slide rail, can avoid filter plate to be abraded, prolong service life.

Description

Technical Field

[0001] This invention relates to the field of sludge treatment technology, and in particular to a device and process for the harmless treatment of oily sludge. Background Technology

[0002] Oily sludge is a hazardous waste generated during petroleum extraction, refining, and petrochemical processes. It has a complex composition, containing large amounts of petroleum hydrocarbons, heavy metals, bacteria, and other harmful substances. If not properly treated, oily sludge will not only occupy significant amounts of land resources but also cause serious pollution to soil, water, and air, endangering the ecological environment and human health.

[0003] Currently, there are various methods for treating oily sludge, such as physical, chemical, and biological methods. In physical methods, a filter press is typically used to apply pressure to the oily sludge, causing the liquid to seep out. For example, utility model patent document CN223184147U discloses a plate and frame filter press, including a frame, a filter plate body located on the frame, and slide rails on both the front and rear sides of the frame. A actuator is slidably connected to the surface of the slide rails, causing the filter plate body to slide on the slide rails, thus achieving filter plate separation. However, in this type of plate and frame filter press, when the actuator causes the filter plate body to slide and wobble on the slide rails, wear easily occurs between the ear plates of the filter plate body and the slide rails, affecting the service life of the plate and frame filter press over time. Summary of the Invention

[0004] Therefore, it is necessary to provide a harmless treatment device and process for oily sludge to address the technical problem of wear between the filter plate body and the slide rail affecting its service life.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A device for the harmless treatment of oily sludge includes a frame, filter plates, and actuating blocks. The frame has two parallel slide rails arranged horizontally, each with a corresponding support rod extending in the front-back direction. Multiple filter plates are arranged vertically in the front-back direction, each with ear plates on both sides. Each filter plate is supported on the two slide rails by two ear plates. Actuating blocks are slidably mounted on each support rod, and each actuating block has a clamping component that clamps the ear plates and moves them up and down relative to the slide rails. When the actuating blocks slide back and forth along the support rods and move the filter plates synchronously back and forth through the clamping components, the clamping components move the ear plates upwards, creating a gap between the ear plates and the slide rails.

[0007] Furthermore, the clamping member includes a clamping seat, which is rotatably mounted on the actuating block about a vertical axis. The clamping seat is provided with a first clamping rod and a second clamping rod arranged sequentially from front to back. There are two of each of the first and second clamping rods, which are distributed in the left-right direction. The first clamping rod and the second clamping rod correspond one-to-one in the front-back direction. The ends of the first clamping rods away from the clamping seat and the ends of the second clamping rods away from the clamping seat are provided with clamping plates. The clamping plates of the first clamping rods can clamp the front side of the ear plate, and the clamping plates of the second clamping rods can clamp the rear side of the ear plate.

[0008] Furthermore, the clamping seat is provided with a lifting seat, which is used to support the ear plate. The clamping seat has an arc-shaped groove in the middle, and the axis of the arc-shaped groove extends in the left and right direction. The bottom of the lifting seat is arc-shaped. The lifting seat is rotatably disposed in the arc-shaped groove around the axis of the arc-shaped groove. The clamping seat can slide up and down relative to the actuating block, so that the lifting seat moves up and down synchronously.

[0009] Furthermore, a connecting block is provided in the middle of the arc-shaped groove. The connecting block is a rectangular block, and springs are provided on both the front and rear sides of the connecting block. The spring on the front side is connected to the front side of the bottom of the lifting seat, and the spring on the rear side is connected to the rear side of the bottom of the lifting seat. The two springs have a tendency to keep the lifting seat in the arc-shaped groove.

[0010] Furthermore, the actuating block is provided with a first sliding groove extending in the vertical direction, and a lifting block that can slide up and down is provided in the first sliding groove. The lifting block is provided with a second sliding groove extending in the horizontal direction, and a rotating block that can slide left and right is provided in the second sliding groove. The bottom of the clamping seat is provided with a rotating groove, and the upper end of the rotating block is embedded in the rotating groove and can rotate around the vertical axis, so that the clamping seat is rotatably mounted on the actuating block around the vertical axis.

[0011] Furthermore, the front end of the clamping seat is provided with a first telescopic groove that is inclined relative to the vertical direction, and the rear end of the clamping seat is provided with a second telescopic groove that is inclined relative to the vertical direction. The inclination direction of the first telescopic groove is opposite to the inclination direction of the second telescopic groove. A first clamping block is hinged to the first clamping rod. The first clamping block can slide along the first telescopic groove to make the clamping piece of the first clamping rod approach or move away from the front side of the filter plate. A second clamping block is hinged to the second clamping rod. The second clamping block can slide along the second telescopic groove to make the clamping piece of the second clamping rod approach or move away from the rear side of the filter plate.

[0012] Furthermore, a first rotating shaft is provided between the first clamping rod and the first clamping block, the first rotating shaft extends in the left-right direction, and a first torsion spring is provided on the first rotating shaft, the first torsion spring having a tendency to rotate the first clamping rod upward; a second rotating shaft is provided between the second clamping rod and the second clamping block, the second rotating shaft extends in the left-right direction, and a second torsion spring is provided on the second rotating shaft, the second torsion spring having a tendency to rotate the second clamping rod upward.

[0013] Furthermore, the clamping seat is provided with a first trigger rod and a second trigger rod. The first trigger rod corresponds one-to-one with the first clamping rod. When the first clamping rod is pressed and rotates downward around the first rotating axis, the first clamping rod contacts the first trigger rod, which can cause the clamping seat to move downward, thereby lifting the seat and causing the ear plate to contact the slide rail. When the second clamping rod is pressed and rotates downward around the second rotating axis, the second clamping rod contacts the second trigger rod, which can cause the clamping seat to move upward, thereby lifting the seat and causing the ear plate to move upward away from the slide rail.

[0014] Furthermore, it also includes a hydraulic system, which includes a first hydraulic circuit, a second hydraulic circuit, and a third hydraulic circuit. The hydraulic system controls the lifting block to move up and down in the first sliding groove of the actuating block through the first hydraulic circuit, thereby causing the lifting block to drive the clamping seat to move up and down. The hydraulic system controls the first clamping block to slide in the first telescopic groove through the second hydraulic circuit, and the hydraulic system controls the second clamping block to slide in the second telescopic groove through the third hydraulic circuit.

[0015] A process for the harmless treatment of oily sludge, using the aforementioned harmless treatment device for oily sludge, includes the following steps:

[0016] S1. Collect oily sludge and pre-treat it to achieve initial solid-liquid separation of the oily sludge;

[0017] S2. The pretreated solid oily sludge is sent into the oily sludge harmless treatment device, so that the oily sludge is pressed and forms a filter cake.

[0018] S3. The actuating block slides back and forth along the support rod and drives one of the filter plates to slide synchronously through the clamping parts, thereby separating the filter plate from the adjacent filter plate.

[0019] S4. Make the agitators on the left and right sides of the filter plate shake back and forth alternately or slide back and forth synchronously to remove the filter cake.

[0020] The beneficial effects of this invention are:

[0021] The oily sludge harmless treatment device and process provided by the present invention, firstly, when two adjacent filter plates are separated, the filter plates do not need to contact the slide rail, thus avoiding sliding friction, preventing wear of the filter plates, and extending the service life of the oily sludge harmless treatment device.

[0022] Secondly, when the filter cake on the filter plate is subsequently detached, two actuating blocks are needed to drive the left and right sides of the filter plate to alternately or synchronously sway back and forth. By rotating the clamping base around the vertical axis, the clamping plates of the first and second clamping rods can always be kept in close contact with the filter plate, thereby avoiding torque between the ear plates on the left and right sides of the filter plate and the first and second clamping rods, and preventing deformation of the filter plate. At the same time, each actuating block has two first clamping rods and two second clamping rods on its corresponding clamping component. Compared with the traditional method of only having one first clamping rod and one second clamping rod, this can further prevent torque from being generated on the filter plate, prevent deformation of the filter plate, and extend the service life of the oily sludge harmless treatment device. Attached Figure Description

[0023] Figure 1 A three-dimensional structural schematic diagram of an oily sludge harmless treatment device provided in an embodiment of the present invention;

[0024] Figure 2 This is a side view schematic diagram of an oily sludge harmless treatment device provided in an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of the structure at point X (at this time, the first clamping rod and the second clamping rod are in the first state);

[0026] Figure 4 This is a schematic diagram of the structure of the actuating block in an oily sludge harmless treatment device provided in an embodiment of the present invention;

[0027] Figure 5 This is an exploded schematic diagram of the actuating block in an oily sludge harmless treatment device provided in an embodiment of the present invention.

[0028] Figure 6 A side view of the actuating block in an oily sludge harmless treatment device provided in an embodiment of the present invention. Figure 1 (At this time, the first clamping rod and the second clamping rod are in the third state);

[0029] Figure 7 for Figure 6 Sectional view of AA;

[0030] Figure 8 for Figure 6 BB section view;

[0031] Figure 9 A side view of the actuating block in an oily sludge harmless treatment device provided in an embodiment of the present invention. Figure 2 (At this time, the first clamping rod and the second clamping rod are in the second state).

[0032] in:

[0033] Icon labels:

[0034] 110. Frame; 111. Slide rail; 112. Support rod; 120. Actuating block; 121. Rectangular hole; 122. First slide groove; 123. First hydraulic interface; 130. Lifting block; 131. Second slide groove; 140. Rotating block; 141. Rotating shaft; 150. Arc groove; 151. Arc protrusion; 152. Connecting block; 153. Spring; 154. Rotating groove; 160. Lifting seat; 161. Arc groove; 162. Pressure sensor; 170. Clamping seat ; 171, Second trigger rod; 172, Second cable interface; 173, Second telescopic groove; 174, Third hydraulic interface; 175, First trigger rod; 176, First cable interface; 177, Second hydraulic interface; 178, First telescopic groove; 180, Second clamping rod; 181, Second clamping block; 182, Second rotating shaft; 183, Second torsion spring; 190, First clamping rod; 191, First clamping block; 200, Filter plate; 201, Ear plate; 300, Clamping piece. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0036] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0037] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] like Figures 1 to 9 As shown, an embodiment of the present invention provides a harmless treatment device for oily sludge, including a frame 110, a filter plate 200 and a lever block 120; the frame 110 is provided with two parallel slide rails 111, which are distributed in the left-right direction, and each slide rail 111 is provided with a corresponding support rod 112, and the support rod 112 and the slide rail 111 both extend in the front-back direction.

[0039] The filter plate 200 is placed vertically. Multiple filter plates 200 are arranged sequentially along the front-back direction. Each filter plate 200 has ear plates 201 on both the left and right sides. Each filter plate 200 is supported on the left and right slide rails 111 by two ear plates 201.

[0040] The actuating block 120 is slidably mounted on each support rod 112. Each actuating block 120 is equipped with a clamping member, which can clamp the ear plate 201 and drive the ear plate 201 to move up and down relative to the slide rail 111. When the actuating block 120 slides back and forth along the support rod 112 and drives the filter plate 200 to slide back and forth synchronously through the clamping member, the clamping member causes the ear plate 201 to move upward, thereby creating a gap between the ear plate 201 and the slide rail 111.

[0041] Specifically, the actuating block 120 is a rectangular block with a rectangular hole 121 inside, and the support rod 112 is a rectangular rod. The support rod 112 slides through the rectangular hole 121 of the actuating block 120. There is a gap between the left and right sides of the filter plate 200 and the left and right slide rails 111.

[0042] In this way, when two adjacent filter plates 200 are separated, the filter plate 200 does not need to contact the slide rail 111, thus avoiding sliding friction, preventing wear of the filter plate 200, and extending the service life of the oily sludge harmless treatment device.

[0043] Furthermore, the clamping member includes a clamping seat 170, which is rotatably mounted on the actuating block 120 about a vertical axis. The clamping seat 170 is provided with a first clamping rod 190 and a second clamping rod 180 arranged sequentially from front to back. There are two of each of the first clamping rod 190 and the second clamping rod 180, which are distributed in the left-right direction. The first clamping rod 190 and the second clamping rod 180 correspond one-to-one in the front-back direction. The ends of the first clamping rod 190 and the second clamping rod 180 away from the clamping seat 170 are provided with clamping pieces 300. The clamping pieces 300 of the first clamping rod 190 can clamp the front side of the ear plate 201, and the clamping pieces 300 of the second clamping rod 180 can clamp the rear side of the ear plate 201.

[0044] Specifically, both the first clamping rod 190 and the second clamping rod 180 are arc-shaped rods, and the arc-shaped opening of the first clamping rod 190 is positioned opposite to the arc-shaped opening of the second clamping rod 180. The clamping piece 300 increases the contact area between the first clamping rod 190, the second clamping rod 180 and the ear plate 201, thereby making the force on the ear plate 201 more uniform.

[0045] When the filter cake on the filter plate 200 is subsequently detached, two actuating blocks 120 are needed to drive the left and right sides of the filter plate 200 to alternately or synchronously swing back and forth. When the left and right sides of the filter plate 200 swing back and forth alternately, the filter plate 200 will rotate around the vertical axis. By causing the clamping seat 170 to rotate around the vertical axis, the clamping plates 300 of the first clamping rod 190 and the clamping plates 300 of the second clamping rod 180 can always be in close contact with the filter plate 200, thereby avoiding the generation of torque between the ear plates 201 on the left and right sides of the filter plate 200 and the first clamping rod 190 and the second clamping rod 180, and preventing the filter plate 200 from deforming. At the same time, each actuating block 120 has two first clamping rods 190 and two second clamping rods 180 on its corresponding clamping component. Compared with the traditional method of only setting one first clamping rod 190 and one second clamping rod 180, this can further prevent the filter plate 200 from generating torque and prevent the filter plate 200 from deforming.

[0046] Furthermore, the clamping seat 170 is provided with a lifting seat 160, which is used to support the ear plate 201. The clamping seat 170 has an arc-shaped groove 150 in the middle, and the axis of the arc-shaped groove 150 extends in the left and right direction. The bottom of the lifting seat 160 is arc-shaped. The lifting seat 160 is rotatably disposed in the arc-shaped groove 150 around the axis of the arc-shaped groove 150. The clamping seat 170 can slide up and down relative to the actuating block 120, so that the lifting seat 160 moves up and down synchronously.

[0047] Specifically, the frame 110 is equipped with a control system, and the lifting seat 160 has a lifting groove inside, which can prevent the ear plate 201 from falling out of the lifting seat 160 when it moves back and forth. The lifting groove is equipped with a pressure sensor 162, which can detect the weight of the filter plate 200 and transmit the weight data to the control system.

[0048] The inner wall of the arc-shaped groove 150 is provided with two arc-shaped protrusions 151, which are arranged around the arc of the arc-shaped groove 150. The bottom of the lifting seat 160 is provided with two arc-shaped grooves 161. The arc-shaped protrusions 151 and the arc-shaped grooves 161 are slidably engaged, so that the lifting seat 160 is rotatably arranged in the arc-shaped groove 150 around the axis of the arc-shaped groove 150. This can limit the rotation direction of the lifting seat 160 and avoid torque between the lifting seat 160 and the ear plate 201, which would cause wear on the filter plate 200.

[0049] Furthermore, a connecting block 152 is provided in the middle of the arc-shaped groove 150. The connecting block 152 is a rectangular block. Springs 153 are provided on both the front and rear sides of the connecting block 152. The spring 153 on the front side is connected to the front side of the bottom of the lifting seat 160, and the spring 153 on the rear side is connected to the rear side of the bottom of the lifting seat 160. The two springs 153 have a tendency to keep the lifting seat 160 in the arc-shaped groove 150.

[0050] When the filter plate 200 experiences angular fluctuations due to movement and start / stop, the lifting seat 160 rotates a certain angle around the axis of the arc-shaped groove 150. The springs 153 on both sides of the connecting block 152 generate a reverse elastic force through stretching or compression, buffering the impact of external forces on the lifting seat 160. This buffering effect reduces rigid collisions between the ear plate 201 and the lifting seat 160, preventing damage to the filter plate 200 and extending its service life. Furthermore, without external intervention, the lifting seat 160 can return to its original position within the arc-shaped groove 150, facilitating subsequent re-lifting of the filter plate 200.

[0051] Furthermore, the actuating block 120 is provided with a first sliding groove 122 extending in the vertical direction, and a lifting block 130 that can slide up and down is provided in the first sliding groove 122. The lifting block 130 is provided with a second sliding groove 131 extending in the horizontal direction, and a rotating block 140 that can slide left and right is provided in the second sliding groove 131. The bottom of the clamping seat 170 is provided with a rotating groove 154, and the upper end of the rotating block 140 is provided with a rotating shaft 141. The rotating shaft 141 is embedded in the rotating groove 154 and can rotate around the vertical axis, so that the clamping seat 170 is rotatably mounted on the actuating block 120 around the vertical axis.

[0052] In this way, the lifting block 130 moves up and down, causing the lifting seat 160 to move up and down synchronously, thus realizing the up and down movement of the filter plate 200 relative to the slide rail 111. The rotating block 140 can slide left and right relative to the lifting block 130, so that when the left and right sides of the filter plate 200 slide back and forth alternately, it can avoid stretching the filter plate 200 and extend the service life of the filter plate 200.

[0053] Furthermore, the clamping base 170 has a first telescopic groove 178 inclined relative to the vertical direction at its front end, and a second telescopic groove 173 inclined relative to the vertical direction at its rear end. The inclination direction of the first telescopic groove 178 is opposite to that of the second telescopic groove 173. A first clamping block 191 is hinged to the first clamping rod 190. The first clamping block 191 slides along the first telescopic groove 178, allowing the clamping piece 300 of the first clamping rod 190 to move closer to or away from the front side of the filter plate 200. A second clamping block 181 is hinged to the second clamping rod 180. The second clamping block 181 slides along the second telescopic groove 173, allowing the clamping piece 300 of the second clamping rod 180 to move closer to or away from the rear side of the filter plate 200. This design is simple and can reliably clamp the filter plate 200.

[0054] Furthermore, a first rotating shaft is provided between the first clamping rod 190 and the first clamping block 191. The first rotating shaft extends in the left-right direction and a first torsion spring is provided on the first rotating shaft. The first torsion spring has a tendency to rotate the first clamping rod 190 upward. A second rotating shaft 182 is provided between the second clamping rod 180 and the second clamping block 181. The second rotating shaft 182 extends in the left-right direction and a second torsion spring 183 is provided on the second rotating shaft 182. The second torsion spring 183 has a tendency to rotate the second clamping rod 180 upward.

[0055] The first torsion spring and the second torsion spring 183 respectively enable the first clamping rod 190 and the second clamping rod 180 to pass under the ear plate 201 of the adjacent filter plate 200, and automatically reset after disengaging from the ear plate 201 of the adjacent filter plate 200.

[0056] Furthermore, the clamping seat 170 is provided with a first trigger rod 175 and a second trigger rod 171. The first trigger rod 175 corresponds one-to-one with the first clamping rod 190. When the first clamping rod 190 is pressed and rotates downward around the first rotating axis, the first clamping rod 190 contacts the first trigger rod 175, which can cause the clamping seat 170 to move downward, thereby lifting the seat 160 and causing the ear plate 201 to contact the slide rail 111. When the second clamping rod 180 is pressed and rotates downward around the second rotating axis 182, the second clamping rod 180 contacts the second trigger rod 171, which can cause the clamping seat 170 to move upward, thereby lifting the seat 160 and causing the ear plate 201 to move upward away from the slide rail 111.

[0057] Specifically, the clamping base 170 has a first cable interface 176 corresponding to the position of the first trigger rod 175, and a second cable interface 172 corresponding to the position of the second trigger rod 171. Both the first cable interface 176 and the second cable interface 172 are connected to cables, which are connected to the control system. When the first clamping rod 190 contacts the first trigger rod 175, an electrical signal is generated and transmitted to the control system. When the second clamping rod 180 contacts the second trigger rod 171, an electrical signal is generated and transmitted to the control system.

[0058] Furthermore, it also includes a hydraulic system, which includes a first hydraulic circuit, a second hydraulic circuit, and a third hydraulic circuit. The hydraulic system controls the lifting block 130 to move up and down within the first sliding groove 122 of the actuating block 120 through the first hydraulic circuit, thereby causing the lifting block 130 to drive the clamping seat 170 to move up and down. The hydraulic system controls the first clamping block 191 to slide within the first telescopic groove 178 through the second hydraulic circuit, and the hydraulic system controls the second clamping block 181 to slide within the second telescopic groove 173 through the third hydraulic circuit.

[0059] Specifically, the actuating block 120 is provided with a first hydraulic interface 123, which corresponds to a first hydraulic oil circuit. The lifting seat is provided with a second hydraulic interface 177 and a third hydraulic interface 174, which correspond to a second hydraulic oil circuit and a third hydraulic interface 174, respectively.

[0060] The frame 110 is also equipped with a drive mechanism, which is a cylinder or a hydraulic cylinder. The drive mechanism can control the sliding of the two toggle blocks 120 on the support rod 112, so that the two toggle blocks 120 can drive the left and right sides of each filter plate 200 to swing back and forth alternately or synchronously.

[0061] For example, when the pressure sensor 162 detects that the weight of the filter plate 200 exceeds the set value, the control system causes the drive mechanism to drive the two left and right toggle blocks 120 to swing back and forth alternately, so that the left and right sides of the filter plate 200 can swing back and forth alternately. This results in a large swing amplitude and a fast filter cake falling off.

[0062] When the pressure sensor 162 detects that the weight of the filter plate 200 is less than the set value, the control system causes the drive mechanism to drive the two left and right actuating blocks 120 to swing back and forth synchronously, so that the left and right sides of the filter plate 200 can swing back and forth synchronously. This way, the swing amplitude is small, and the filter cake can be detached.

[0063] The frame 110 is provided with a limiting block. When the toggle block 120 drives the first filter plate 200 to slide forward into place, the limiting block causes the first clamping rod 190 to be pressed down and rotate and contact the first trigger rod 175.

[0064] Based on the above embodiments, the usage principle and working process of the embodiments of the present invention are as follows:

[0065] The oily sludge is transported to the oily sludge harmless treatment device, where it enters the space between the filter plates 200. Under pressure, the oil and water are filtered out through the filter plates 200, while the solid oily sludge is trapped on the filter plates 200 to form a sludge cake.

[0066] Unloading process: The drive mechanism is activated, causing the two actuating blocks 120 to slide backward synchronously. This causes the second clamping rod 180 to pass under the ear plate 201 of the first filter plate 200 and under the ear plate 201 of the second filter plate 200. That is, the second clamping rod 180 is pressed down twice, causing it to contact the second trigger rod 171 twice and generate two electrical signals. At this time, the first clamping rod 190 and the second clamping rod 180 are in the following positions: Figure 3 In the first state shown, the second clamping rod 180 is in contact with the second trigger rod 171. When the control system receives an electrical signal indicating that the second clamping rod 180 has been pressed down twice, it drives the two actuating blocks 120 to move to the left to the area below the ear plate 201 of the first filter plate 200 corresponding to the lifting seat 160 via the drive mechanism. At this time, the second clamping rod 180 resets under the action of the second torsion spring and no longer contacts the second trigger rod 171. Then, the control system moves the lifting block 130 upward through the first hydraulic circuit of the hydraulic system, thereby lifting the ear plate 201 of the first filter plate 200 upward, so that the first filter plate 200 no longer contacts the slide rail 111. The control system then controls the first clamping block 191 to extend from the first telescopic groove 178 and the second clamping block 181 to extend from the second telescopic groove 173 via the second and third hydraulic circuits, respectively. At this time, the first clamping rod 190 and the second clamping rod 180 are in the following positions: Figure 9 In the second state shown, the clamping plates 300 of the first clamping rod 190 and the clamping plates 300 of the second clamping rod 180 respectively clamp the front and rear sides of the first filter plate 200. Then, the control system controls the two actuating blocks 120 to slide forward synchronously to a set distance and then stop. Based on the weight of the filter plate 200 detected by the pressure sensor 162, the control system causes the two actuating blocks 120 to drive the left and right sides of the first filter plate 200 to alternately swing back and forth or swing back and forth synchronously, thereby causing the filter cake to fall off automatically. Then, the control system uses the second hydraulic oil circuit to retract the first clamping block 191 into the first telescopic groove 178 and causes the two actuating blocks 120 to continue to slide forward, as shown. Figures 6 to 8As shown, at this time, the first clamping rod 190 and the second clamping rod 180 are in the third state. After being squeezed by the upper limit block of the frame 110, the first clamping rod 190 rotates downward and contacts the first trigger rod 175. At this time, after the control system receives the electrical signals from the first clamping rod 190 and the first trigger rod 175, it causes the first hydraulic oil circuit to lower the lifting block 130, so that the ear plate 201 of the first filter plate 200 re-contacts the slide rail 111, completing the unloading of the first filter plate 200.

[0067] Finally, the control system uses the third hydraulic circuit to retract the second clamping block 181 into the second telescopic groove 173.

[0068] Then, by repeating the above process, multiple filter plates 200 can be unloaded in sequence. Unlike the above process, when the actuating block 120 drives the second and subsequent filter plates 200 to slide forward to the position of adhering to the first filter plate 200, the first clamping rod 190 can be pressed down by the ear plate 201 of the first filter plate 200, thereby rotating downward and contacting the first trigger rod 175.

[0069] This invention also provides a process for the harmless treatment of oily sludge, which uses the above-mentioned harmless treatment device for oily sludge and includes the following steps:

[0070] S1. Collect oily sludge and pre-treat it to achieve initial solid-liquid separation of the oily sludge;

[0071] S2. The pretreated solid oily sludge is sent into the oily sludge harmless treatment device, so that the oily sludge is pressed and forms a filter cake.

[0072] S3. The actuating block 120 slides back and forth along the support rod 112 and drives one of the filter plates 200 to slide synchronously through the clamping member, thereby separating the filter plate 200 from the adjacent filter plate 200.

[0073] S4. Make the agitator blocks 120 on both sides of the filter plate 200 alternately shake back and forth or slide back and forth synchronously to achieve the removal of the filter cake.

[0074] Furthermore, the preprocessing includes the following steps:

[0075] S11. The collected oily sludge is transported to a sedimentation tank for static sedimentation by gravity.

[0076] S12. The solid oily sludge settled at the bottom of the sedimentation tank is transported to the tail dryer, where the tail dryer stirs and performs preliminary compression filtration on the oily sludge.

[0077] Furthermore, the oily sludge harmless treatment process also includes the following steps:

[0078] S5. The oily sludge from the secondary extrusion filtration is transported to the drying drum for drying.

[0079] S6. The dried oily sludge is transported to the incinerator for incineration.

[0080] More specifically, in step S11, most of the water and light oil in the oily sludge will gradually float to the surface, while solid particles and heavy oil will settle to the bottom of the tank. The settling time depends on the properties and concentration of the oily sludge, and is generally 12 to 24 hours. Through this step, the solid-liquid separation of the oily sludge can be initially achieved, and the separated supernatant is used to mix oil-based drilling fluids.

[0081] In step S12, the tail dryer uses a high-speed rotating rotor and helical blades to agitate and compress the oily sludge, further achieving solid-liquid separation. During the dynamic separation process, centrifugal force and mechanical pressure are used to separate the water and some oil from the oily sludge. The tail dryer's rotation speed and operating time can be adjusted according to the processing volume of oily sludge and the separation effect, generally with a rotation speed of 1000 rpm to 3000 rpm and an operating time of 30 to 60 minutes. The separated supernatant is used to mix oil-based drilling fluid.

[0082] In step S2, the oily sludge is compressed using the oily sludge harmless treatment device of the present invention, causing oil and water to be squeezed out from the solid particles. The pressing pressure is generally 10 MPa to 30 MPa, and the pressing time is 10 minutes to 30 minutes. Through this step, the water content and oil content of the oily sludge can be further reduced.

[0083] In step S5, the oily sludge, after pressing, although having a low oil and water content, still does not meet the requirements for incineration. It is then transported to a drying drum for drying treatment. The drying drum uses indirect heating, employing heat transfer oil or steam as a heat source to heat the oily sludge, causing the water and residual oil to evaporate. The drying temperature is generally controlled between 150℃ and 300℃, and the drying time is 1 to 3 hours. The waste gas generated during the drying process can be treated through condensation, adsorption, etc., to recover the oil and water, and is discharged after meeting standards.

[0084] In step S6, the incinerator uses combustion technology to fully burn the oily sludge. The incineration temperature is generally controlled between 800℃ and 1200℃, and the incineration time is between 0.5 hours and 2 hours. The heat generated during incineration can be recovered and reused, such as for heating heat transfer oil or generating steam. The ash residue after incineration can be safely landfilled or comprehensively utilized. After incineration, the petroleum hydrocarbon content in the oily sludge is less than or equal to 0.3%, meeting the national standards for harmlessness.

[0085] An embodiment of the present invention provides a process for the harmless treatment of oily sludge, the specific implementation process of which is as follows:

[0086] 1. Raw material preparation: Collect oily sludge from oil fields, with an initial petroleum hydrocarbon content of 20% and a water content of 60%.

[0087] 2. Static solid-liquid separation: The oily sludge is transported to a sedimentation tank, where it settles for 18 hours. After sedimentation, the separated supernatant has a petroleum hydrocarbon content of 2% and a water content of 95%. The separated supernatant is used to blend oil-based drilling fluids.

[0088] 3. Dynamic Separation in the Tail Dryer: The solid oily sludge settled at the bottom of the sedimentation tank is transported to the tail dryer, which operates at 1500 rpm for 45 minutes. The separated liquid petroleum hydrocarbon content is 10%, and the water content is 80%, which is combined with the supernatant from the sedimentation tank for further treatment. After treatment in the tail dryer, the water content of the oily sludge is reduced to 40%, and the petroleum hydrocarbon content is reduced to 15%.

[0089] 4. Solid-liquid separation by pressing: The oily sludge, after being processed by the tail dryer, is transported to the oily sludge harmless treatment device. The pressing pressure is 15 MPa, and the pressing time is 20 minutes. After pressing, the moisture content of the oily sludge is reduced to 20%, and the petroleum hydrocarbon content is reduced to 10%.

[0090] 5. Drying in a drying drum: The pressed oily sludge is conveyed to a drying drum, where the drying temperature is controlled at 200℃ and the drying time is 2 hours. The waste gas generated during the drying process is treated by condensation and adsorption before being discharged in compliance with standards. After drying, the moisture content of the oily sludge is reduced to 5%, and the petroleum hydrocarbon content is reduced to 5%.

[0091] 6. Incineration: The dried oily sludge is transported to an incinerator, where the incineration temperature is controlled at 900℃ and the incineration time is 1 hour. The ash residue after incineration is safely landfilled. Testing shows that the petroleum hydrocarbon content after incineration is 0.2%, meeting the national harmless treatment standards.

[0092] The harmless treatment process for oily sludge provided by this invention, firstly, through multi-step solid-liquid separation, drying and incineration, can effectively reduce the petroleum hydrocarbon content in oily sludge to meet national harmless treatment standards and reduce environmental pollution.

[0093] Secondly, technologies such as gravity sedimentation, mechanical separation, and waste heat recovery from incineration are employed to reduce energy consumption and costs during the treatment process. Simultaneously, the separated oil and water are recycled, improving resource utilization.

[0094] Third, throughout the entire treatment process, the generated waste gas, wastewater, and waste residue were properly treated, reducing the generation of secondary pollution and meeting environmental protection requirements.

[0095] Fourth, this process is applicable to the treatment of various types of oily sludge and has strong versatility and adaptability.

[0096] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A device for the harmless treatment of oily sludge, characterized in that, include: The frame has two parallel slide rails, which are distributed in the left-right direction. Each slide rail is provided with a corresponding support rod, and the support rod and the slide rail both extend in the front-back direction. The filter plate is placed vertically. Multiple filter plates are arranged in sequence along the front-back direction. Each filter plate has ear plates on both the left and right sides. Each filter plate is supported on two slide rails on the left and right sides by two ear plates. A toggle block is slidably mounted on each support rod. Each toggle block is equipped with a clamping component, which can clamp the ear plate and drive the ear plate to move up and down relative to the slide rail. When the toggle block slides back and forth along the support rod and drives the filter plate to slide back and forth synchronously through the clamping component, the clamping component moves the ear plate upward, thereby creating a gap between the ear plate and the slide rail. The clamping component includes a clamping seat, which is rotatably mounted on the toggle block about a vertical axis. The clamping seat is provided with a first clamping rod and a second clamping rod arranged sequentially back and forth. There are two of each of the first and second clamping rods, distributed in the left-right direction. The first clamping rod and the second clamping rod correspond one-to-one in the front-back direction. Both the end of the first clamping rod away from the clamping seat and the end of the second clamping rod away from the clamping seat are equipped with clamping plates. The clamping plates of the first clamping rod can clamp the front side of the ear plate, and the clamping plates of the second clamping rod can clamp the rear side of the ear plate. The clamping seat is equipped with a lifting seat for supporting the ear plate. The clamping seat has an arc-shaped groove in the middle, and the axis of the arc-shaped groove extends in the left-right direction. The bottom of the lifting seat is arc-shaped, and the lifting seat is rotatably disposed in the arc-shaped groove about the axis of the arc-shaped groove. The clamping seat can slide up and down relative to the actuating block, thereby causing the lifting seat to move up and down synchronously. A connecting block is provided in the middle of the arc-shaped groove. The connecting block is a rectangular block, and springs are provided on both the front and rear sides of the connecting block. A spring located on the front side is connected to the front side of the bottom of the lifting seat, and a spring located on the rear side is connected to the rear side of the bottom of the lifting seat. Both springs tend to position the lifting seat within an arc-shaped groove. The actuating block has a first sliding groove extending vertically, in which a lifting block capable of sliding vertically is located. The lifting block has a second sliding groove extending horizontally, in which a rotating block capable of sliding horizontally is located. The bottom of the clamping seat has a rotating groove, and the upper end of the rotating block is embedded in the rotating groove and can rotate around a vertical axis, thereby allowing the clamping seat to be rotatably mounted on the actuating block around a vertical axis. The front end of the clamping seat has a first... A telescopic groove is provided at the rear end of the clamping seat, and a second telescopic groove is provided that is inclined relative to the vertical direction. The inclination direction of the first telescopic groove is opposite to that of the second telescopic groove. A first clamping block is hinged to the first clamping rod. The first clamping block slides along the first telescopic groove, which allows the clamping piece of the first clamping rod to approach or move away from the front side of the filter plate. A second clamping block is hinged to the second clamping rod. The second clamping block slides along the second telescopic groove, which allows the clamping piece of the second clamping rod to approach or move away from the rear side of the filter plate. A first rotating shaft is provided between the first clamping rod and the first clamping block. The first rotating shaft extends in the left-right direction. A first torsion spring is provided on the first rotating shaft. The first torsion spring has a tendency to rotate the first clamping rod upward.A second rotating shaft is provided between the second clamping rod and the second clamping block. The second rotating shaft extends in the left-right direction and is equipped with a second torsion spring. The second torsion spring has a tendency to rotate the second clamping rod upward. The clamping seat is equipped with a first trigger rod and a second trigger rod. The first trigger rod corresponds to the first clamping rod. When the first clamping rod is pressed and rotates downward around the first rotating shaft, the first clamping rod contacts the first trigger rod, causing the clamping seat to move downward, thereby lifting the seat and causing the ear plate to contact the slide rail. When the second clamping rod is pressed and rotates downward around the second rotating shaft, the second clamping rod contacts the second trigger rod, causing the clamping seat to move upward, thereby lifting the seat and causing the ear plate to move upward away from the slide rail.

2. The oily sludge harmless treatment device according to claim 1, characterized in that, It also includes a hydraulic system, which includes a first hydraulic circuit, a second hydraulic circuit and a third hydraulic circuit. The hydraulic system controls the lifting block to move up and down in the first sliding groove of the actuating block through the first hydraulic circuit, thereby causing the lifting block to drive the clamping seat to move up and down. The hydraulic system controls the first clamping block to slide in the first telescopic groove through the second hydraulic circuit, and the hydraulic system controls the second clamping block to slide in the second telescopic groove through the third hydraulic circuit.

3. A process for the harmless treatment of oily sludge, employing the oily sludge harmless treatment device described in claim 1 or 2, characterized in that, Includes the following steps: S1. Collect oily sludge and pre-treat it to achieve initial solid-liquid separation of the oily sludge; S2. The pretreated solid oily sludge is sent into the oily sludge harmless treatment device, so that the oily sludge is pressed and forms a filter cake. S3. The actuating block slides back and forth along the support rod and drives one of the filter plates to slide synchronously through the clamping parts, thereby separating the filter plate from the adjacent filter plate. S4. Make the agitators on the left and right sides of the filter plate shake back and forth alternately or slide back and forth synchronously to remove the filter cake.

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