A solid-liquid separation device for hazardous waste treatment

Abstract

The present invention relates to the technical field of solid-liquid separation, and specifically to a solid-liquid separation device for hazardous waste treatment, comprising a base, on which a separation mechanism for solid-liquid separation of hazardous substances is arranged, the separation mechanism comprising an operating tank mounted on the base, a triangular cavity being provided on one side of the operating tank, an exhaust pipe and a conveying pipe being connected to the top of the operating tank, a threaded shaft rotating inside the operating tank being arranged on the base, a filter cartridge moving along the threaded shaft when the threaded shaft rotates inside the operating tank, and an object of the present invention is to provide a solid-liquid separation device for hazardous waste treatment, which can automatically and quantitatively control the amount of additives added, so as to avoid excessive or insufficient amounts of additives added manually, resulting in excessive or insufficient amounts of additives added, which will increase costs when added excessively, and affect the solid-liquid separation effect when added insufficiently.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation, in particular to a solid-liquid separation device for hazardous waste treatment. Background Art

[0002] Hazardous waste refers to wastes that are listed in the national hazardous waste list or are identified as having hazardous characteristics according to the national hazardous waste identification standards and identification methods. If such wastes are discharged at will, they will cause damage to the environment, pollute groundwater, reduce the environmental function level of the area, and cause damage to the environment and groundwater, as well as affect human health, and need to be handled with caution;

[0003] During the use of existing hazardous waste solid-liquid separation devices, it is necessary to add appropriate additives (such as flocculants, coagulants, precipitants, etc.) when filtering with filters to significantly improve the separation effect; however, when adding additives, it may be necessary to manually add additives. When adding, the operator manually adds the additives to the waste according to the required amount based on experience and judgment. However, the amount of additives added is determined by the operator's experience, which will result in too much or too little additives added. Too much will increase costs, and too little will affect the solid-liquid separation effect. Summary of the invention

[0004] The purpose of the present invention is to provide a solid-liquid separation device for hazardous waste treatment, which can automatically and quantitatively control the amount of additives added, so as to avoid excessive or insufficient additives added by manual labor, resulting in excessive or insufficient additives added. Excessive addition will increase costs, while insufficient addition will affect the solid-liquid separation effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a solid-liquid separation device for hazardous waste treatment, comprising a base, wherein the base is provided with a separation mechanism for solid-liquid separation of hazardous substances, the separation mechanism comprising an operating tank mounted on the base, a triangular cavity being opened on one side of the operating tank, an exhaust pipe and a conveying pipe being connected to the top of the operating tank, a threaded shaft being provided on the base rotating inside the operating tank, a filter cartridge moving along the threaded shaft when the threaded shaft rotates inside the operating tank, after entering the operating tank through the conveying pipe, the waste is first put into the interior of the filter cartridge, and the filter cartridge is used to separate the solid and liquid of the waste, during the rotation of the threaded shaft, the filter cartridge moves upward along the threaded shaft, the filter cartridge lifts up the solid in the waste and separates it from the liquid, the filter cartridge lifts up the solid and moves it to the triangular cavity of the operating tank, and the gas transmitted by the exhaust pipe flows rapidly to absorb the odor while accelerating the drying of the solid inside the filter cartridge; a filter cartridge is provided on the top of the operating tank to facilitate A sealing assembly for recovering solid waste inside a filter cartridge, the sealing assembly comprising a sealing cover that is sealed and detachably connected to an operating tank, a sleeve running through the middle of the sealing cover; a feeding mechanism for automatically feeding additives is provided on one side of the operating tank, the feeding mechanism comprises a magnetic ring a fixed to the bottom of the filter cartridge, a magnetic ring b that is magnetically connected to the magnetic ring a is slidably provided on the outer side of the operating tank, a limiting ring for limiting the moving distance of the magnetic ring b is provided on the outer side of the operating tank, a piston rod is fixed on one side of the magnetic ring b, a feeding cylinder for feeding additives is connected to one side of the operating tank, one end of the feeding cylinder is connected to a piston cylinder, and one end of the piston rod extends into the interior of the piston cylinder; in the process of the filter cartridge driving the magnetic ring a to move, the magnetic ring a uses the magnetic attraction force to drive the magnetic ring b to move along the outer side of the operating tank, and the magnetic ring b drives one end of the piston rod to move inside the piston cylinder, thereby changing the internal pressure of the feeding cylinder to squeeze the additive inside it and feed it into the interior of the filter cartridge.

[0006] Preferably, the bottom of the working tank is connected to a drain pipe for discharging waste liquid.

[0007] Preferably, one end of the exhaust pipe is externally connected to a blower, and one end of the delivery pipe is connected to a hazardous waste delivery pipe.

[0008] Preferably, a motor is installed at the bottom of the base, an output end of the motor is connected to a threaded shaft, and a thread is formed on the outer side of the threaded shaft.

[0009] Preferably, an outer tube is fixed inside the filter cartridge, the outer tube is sleeved on the outside of the threaded shaft, and the outer tube is connected to the outer thread of the threaded shaft through a ball nut pair.

[0010] Preferably, one end of the outer tube is connected through the sleeve.

[0011] Preferably, an air intake pipe for air intake is provided on the sealing cover, and a one-way valve a is provided on the air intake pipe, and a sealing ring sealedly connected to the top of the working tank is provided below the sealing cover.

[0012] Preferably, a buffer plate is provided on the outer side of one end of the sleeve extending into the interior of the working tank, and the buffer plate is located on one side of the conveying pipe.

[0013] Preferably, the limiting rings are in two groups fixed on the outside of the working tank, and the magnetic ring b moves between the two groups of limiting rings.

[0014] Preferably, a liquid filling port is provided at one end of the feeding cylinder, and a one-way valve b is installed at one end of the piston cylinder.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention utilizes that during the upward movement of the filter cartridge, after the filter cartridge moves to a certain position, the magnetic attraction ring a on the filter cartridge will be magnetically connected with the magnetic attraction ring b on the outside of the working tank, so that the filter cartridge moves upward while driving the magnetic attraction ring b upward, and the magnetic attraction ring b drives the piston rod to move upward, and one end of the piston rod moves inside the piston cylinder, thereby changing the internal pressure of the piston cylinder. Since the piston cylinder is connected to the feeding cylinder, the internal pressure of the feeding cylinder is changed, thereby squeezing the additive inside the feeding cylinder to be put into the interior of the filter cartridge; thereby automatically putting the additive, saving manpower, and avoiding the need to open the working tank when putting, causing the pungent smell inside the working tank to spread, affecting the staff and the working environment; in addition, during the continuous upward movement of the filter cartridge, due to the contact and extrusion of the magnetic attraction ring b with the limiting ring located above, the magnetic attraction ring a and the magnetic attraction ring b are cancelled, and the magnetic attraction ring b no longer moves, thereby stopping the addition of the additive, thereby the amount of the additive put in can be quantitatively controlled, avoiding excessive or insufficient amounts of additives put in by manpower, resulting in excessive or insufficient amounts of additives, excessive putting will increase the cost, and insufficient putting will affect its solid-liquid separation effect.

[0017] 2. During the movement of the filter cartridge, the present invention can filter the hazardous waste inside it to separate the solid and liquid, and the hazardous waste liquid is retained at the bottom of the working tank, while the hazardous waste solid is lifted up by the filter cartridge and moves upward; in addition, the blower connected to the exhaust pipe is started to draw external gas through the air inlet pipe on the sealing cover and enter the working tank, and the gas and the gas in the working tank are jointly drawn into a certain container by the exhaust pipe for storage. In the process of accelerating the flow of gas inside the working tank, the pungent gas generated by the hazardous waste can be quickly extracted. On the one hand, it can solve the problem of gas generated by hazardous waste leaking to the outside and affecting the working environment of operators, and avoid the gas generated by hazardous waste from continuously accumulating inside the working tank, which is not conducive to the solid-liquid separation of hazardous waste inside the working tank; on the other hand, the pungent gas generated by the hazardous waste can be collected and subsequently processed to further reduce the impact of hazardous waste on environmental safety.

[0018] 3. The present invention transports hazardous waste to the inside of the transport pipe and then into the inside of the working tank. At this time, the filter cartridge is at the bottom of the working tank, and the hazardous waste is transported to the inside of the filter cartridge. During the transportation process, the hazardous waste first impacts the buffer plate and then is dropped into the inside of the working tank. The buffer plate can play a buffering role to prevent the hazardous waste from continuously impacting the inner wall of one side of the working tank and causing damage to the inner wall of the working tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 The second schematic diagram of the overall structure of the present invention;

[0021] Figure 3 This is a cross-sectional view of a working tank of the present invention;

[0022] Figure 4 This is the second cross-sectional view of the working tank of the present invention;

[0023] Figure 5 The third cross-sectional view of the working tank of the present invention;

[0024] Figure 6 The fourth cross-sectional view of the working tank of the present invention;

[0025] Figure 7 It is a partial cross-sectional view of the present invention.

[0026] In the figure: 1. base; 2. separation mechanism; 21. working tank; 22. exhaust pipe; 23. conveying pipe; 24. filter cartridge; 25. motor; 26. magnetic ring a; 27. outer tube; 28. threaded shaft; 3. sealing assembly; 31. detachable bracket; 32. sleeve; 33. sealing cover; 34. buffer plate; 35. air inlet pipe; 4. feeding mechanism; 41. magnetic ring b; 42. piston rod; 43. piston cylinder; 44. limiting ring; 45. feeding cylinder. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The present invention provides a solid-liquid separation device for hazardous waste treatment, comprising a base 1, on which a separation mechanism 2 for solid-liquid separation of hazardous materials is arranged, the separation mechanism 2 comprising an operation tank 21 mounted on the base 1, a triangular cavity being provided on one side of the operation tank 21, an exhaust pipe 22 and a conveying pipe 23 being connected to the top of the operation tank 21, a threaded shaft 28 rotating inside the operation tank 21 being provided on the base 1, a filter cartridge 24 moving along the threaded shaft 28 when the threaded shaft 28 rotates inside the operation tank 21, after entering the operation tank 21 through the conveying pipe 23, the waste is firstly put into the filter cartridge 24, and the filter cartridge 24 is used to perform solid-liquid separation on the waste, during the rotation of the threaded shaft 28, the filter cartridge 24 moves upward along the threaded shaft 28, the filter cartridge 24 lifts up the solid in the waste and separates it from the liquid, the filter cartridge 24 lifts up the solid and moves it to the triangular cavity of the operation tank 21, and the gas transmitted by the exhaust pipe 22 flows rapidly to absorb the odor while accelerating the air drying of the solid inside the filter cartridge 24; a filter cartridge 24 is provided on the top of the operation tank 21 for facilitating the return of the waste. The sealing assembly 3 for collecting the solid waste inside the filter cartridge 24 includes a sealing cover 33 which is sealed and detachably connected to the working tank 21, and a sleeve 32 runs through the middle of the sealing cover 33; the bottom of the working tank 21 is connected to a drain pipe for discharging waste liquid, one end of the exhaust pipe 22 is externally connected to a blower, one end of the delivery pipe 23 is connected to a hazardous waste delivery pipe, a motor 25 is installed at the bottom of the base 1, the output end of the motor 25 is connected to a threaded shaft 28, the outer side of the threaded shaft 28 is provided with a thread, and the inside of the filter cartridge 24 is connected to the filter cartridge 24. An outer tube 27 is fixed to the outer part of the working tank 21, and the outer tube 27 is sleeved on the outer side of the threaded shaft 28, and the outer tube 27 and the outer side threads of the threaded shaft 28 are connected by a ball nut pair, one end of the outer tube 27 is connected with the sleeve 32 through, and an air intake pipe 35 for air intake is provided on the sealing cover 33, and a one-way valve a is provided on the air intake pipe 35, and a sealing ring sealed and connected with the top of the working tank 21 is provided below the sealing cover 33, and a buffer plate 34 is provided on the outer side of one end of the sleeve 32 extending to the inside of the working tank 21, and the buffer plate 34 is located on one side of the delivery pipe 23;

[0029] See also Figures 1 to 5As shown, when performing solid-liquid separation of hazardous waste, the hazardous waste is transported to the inside of the transport pipe 23 and then enters the inside of the working tank 21. At this time, the filter cartridge 24 is at the bottom of the working tank 21, and the hazardous waste is transported to the inside of the filter cartridge 24. During the transportation process, the hazardous waste first impacts the buffer plate 34 and then is dropped into the inside of the working tank 21. The buffer plate 34 can play a buffering role to prevent the hazardous waste from continuously impacting the inner wall of one side of the working tank 21 and causing damage to the inner wall of the working tank 21; when the hazardous waste is transported for a certain time or a certain amount, it is also noted that the certain time or a certain amount is manually controlled by the operator; then the motor 25 is started, and the output end of the motor 25 drives the threaded shaft 28 to rotate. Since the outer tube 27 is sleeved on the outside of the threaded shaft 28, and the outer tube 27 is connected to the outer thread of the threaded shaft 28 through a ball nut pair, during the rotation of the threaded shaft 28, the outer tube 27 moves along the threaded shaft 28, and at the same time, the outer tube 27 drives the filter cartridge 24 in the working tank 21 The filter cartridge 24 moves upward inside the working tank 21. During the movement of the filter cartridge 24, the hazardous waste inside can be filtered to separate the solid and liquid. The hazardous waste liquid is retained at the bottom of the working tank 21, while the hazardous waste solid is lifted up by the filter cartridge 24 and moves upward. In addition, the blower connected to the exhaust pipe 22 is started to extract external gas through the air inlet pipe 35 on the sealing cover 33 and enter the working tank 21. The gas and the gas of the working tank 21 are extracted by the exhaust pipe 22 to a certain container for storage. In the process of accelerating the flow of gas inside the working tank 21, the pungent gas generated by the hazardous waste can be quickly extracted. On the one hand, it can solve the problem of gas generated by hazardous waste leaking to the outside world and affecting the working environment of operators, and avoid the gas generated by hazardous waste from continuously accumulating inside the working tank 21, which is not conducive to the solid-liquid separation of hazardous waste inside the working tank 21. On the other hand, the pungent gas generated by the hazardous waste can be collected and subsequently processed to further reduce the impact of hazardous waste on environmental safety.

[0030] See also Figure 5 As shown, since a triangular cavity is opened on one side of the working tank 21, when the filter cartridge 24 moves to the triangular cavity, the contact area between the filter cartridge 24 and the gas can be increased. On the one hand, the gas generated by the hazardous waste can be effectively collected. On the other hand, the rapid flow of gas can speed up the drying of the solid hazardous waste inside the filter cartridge 24 and reduce the work pressure of subsequent treatment of the solid hazardous waste.

[0031] In addition, the inner diameter of the top of the working tank 21 is slightly larger than the inner diameter of other parts, and the outer side of the top of the filter cartridge 24 is in contact with the inner wall of the working tank 21 except the top, thereby preventing solid hazardous waste from falling to the outside of the filter cartridge 24 and being difficult to collect when hazardous waste is put into the filter cartridge 24; the slightly larger inner diameter of the top of the working tank 21 can facilitate the removal of the filter cartridge 24.

[0032] In addition, before performing solid-liquid separation of hazardous waste, the sealing cover 33 is installed on the top of the working tank 21, which can seal the top of the working tank 21 to prevent gas leakage inside the working tank 21. After the solid hazardous waste inside the filter cartridge 24 is filtered, the sealing cover 33 is removed from the top of the working tank 21, and then the filter cartridge 24 is pulled out from the working tank 21, so that the solid hazardous waste inside the filter cartridge 24 can be collected and subsequently processed.

[0033] A feeding mechanism 4 for automatically feeding additives is provided on one side of the working tank 21. The feeding mechanism 4 includes a magnetic ring a26 fixed to the bottom of the filter cylinder 24. A magnetic ring b41 magnetically connected to the magnetic ring a26 is slidably provided on the outer side of the working tank 21. A piston rod 42 is fixed to one side of the magnetic ring b41. A feeding cylinder 45 for feeding additives is connected to one side of the working tank 21. One end of the feeding cylinder 45 is connected to the piston cylinder 43. One end of the piston rod 42 extends into the interior of the piston cylinder 43. When the filter cylinder 24 drives the magnetic ring a26 to move, the magnetic ring a26 uses magnetic The suction force drives the magnetic ring b41 to move along the outside of the working tank 21, and the magnetic ring b41 drives one end of the piston rod 42 to move inside the piston cylinder 43, thereby changing the internal pressure of the feeding cylinder 45 to squeeze the additive inside it and feed it into the inside of the filter cylinder 24; the limiting ring 44 is fixed to the outside of the working tank 21 in two groups, and the magnetic ring b41 moves between the two groups of limiting rings 44, one end of the feeding cylinder 45 is provided with a liquid filling port, and one end of the piston cylinder 43 is installed with a one-way valve b; the outside of the working tank 21 is provided with a limiting ring 44 for limiting the moving distance of the magnetic ring b41;

[0034] See also Figures 3 to 7As shown, during the upward movement of the filter cartridge 24, after the filter cartridge 24 moves to a certain position, the magnetic ring a26 on the filter cartridge 24 will be magnetically connected with the magnetic ring b41 on the outside of the working tank 21, thereby driving the magnetic ring b41 upward while the filter cartridge 24 moves upward, and the magnetic ring b41 drives the piston rod 42 upward, and one end of the piston rod 42 moves inside the piston cylinder 43, thereby changing the internal pressure of the piston cylinder 43, and since the piston cylinder 43 is connected to the feeding cylinder 45, the internal pressure of the feeding cylinder 45 is changed, thereby squeezing the additive inside the feeding cylinder 45 into the interior of the filter cartridge 24; thereby automatically feeding the additive, saving manpower, and avoiding the need to open the working tank 21 when feeding, resulting in the diffusion of pungent odors inside the working tank 21, affecting the staff and the working environment; in addition, during the continuous upward movement of the filter cartridge 24, due to the magnetic ring b41 and the restriction located above The ring 44 is in contact and squeezed, resulting in the cancellation of the magnetic connection between the magnetic ring a26 and the magnetic ring b41, and the magnetic ring b41 no longer moves, thereby stopping the addition of additives. In this way, the amount of additives added can be quantitatively controlled to avoid excessive or insufficient additives added by manpower, resulting in excessive or insufficient addition of additives. Excessive addition will increase the cost, and insufficient addition will affect the solid-liquid separation effect. It is also noted that the magnetic attraction force between the magnetic ring a26 and the magnetic ring b41 is large enough to drive the piston rod 42 to move inside the piston cylinder 43, thereby changing the pressure inside the piston cylinder 43. In the process of the filter cylinder 24 resetting and moving downward, the magnetic attraction force is again used to drive the magnetic ring b41 to reset. At this time, since the one-way valve b is provided on the piston cylinder 43, it will not affect the internal pressure of the feeding cylinder 45. The distance between the other two groups of limiting rings 44 can be adjusted according to actual needs.

[0035] Working principle: the sealing cover 33 is installed on the top of the working tank 21, the top of the working tank 21 can be sealed to prevent gas leakage inside the working tank 21. When performing solid-liquid separation of hazardous waste, the hazardous waste is transported to the inside of the transport pipe 23 and then enters the inside of the working tank 21. At this time, the filter cartridge 24 is at the bottom of the working tank 21, and the hazardous waste is transported to the inside of the filter cartridge 24. During the transportation process, the hazardous waste first impacts the buffer plate 34 and then is dropped into the working tank 21. The buffer plate 34 can play a buffering role to prevent the hazardous waste from continuously impacting the inner wall of one side of the working tank 21 and causing damage to the inner wall of the working tank 21; when the hazardous waste is transported to a certain time or a certain amount, it is also noted that the certain time or a certain amount is manually controlled by the operator; then the motor 25 is started, and the output end of the motor 25 drives the threaded shaft 28 to rotate. Since the outer tube 27 is sleeved on the outside of the threaded shaft 28, and the outer tube 27 is connected to the outer thread of the threaded shaft 28 through a ball nut pair, during the rotation of the threaded shaft 28, the outer tube 27 moves along the threaded shaft 28 moves, and at the same time, the outer tube 27 drives the filter cartridge 24 to move upward inside the working tank 21. During the movement of the filter cartridge 24, the hazardous waste inside it can be filtered to separate the solid and liquid, and the hazardous waste liquid is retained at the bottom of the working tank 21, while the hazardous waste solid is lifted up by the filter cartridge 24 and moves upward; in addition, the blower connected to the exhaust pipe 22 is started, and the external gas is extracted through the air inlet pipe 35 on the sealing cover 33 and enters the working tank 21. The gas and the gas of the working tank 21 are extracted by the exhaust pipe 22 to a certain container for storage. In the process of accelerating the flow of gas inside the working tank 21, the pungent gas generated by the hazardous waste can be quickly extracted. On the one hand, it can solve the problem of gas generated by hazardous waste leaking to the outside world and affecting the working environment of operators, and avoid the gas generated by hazardous waste from continuously accumulating inside the working tank 21, which is not conducive to the solid-liquid separation of hazardous waste inside the working tank 21; on the other hand, the pungent gas generated by the hazardous waste can be collected and subsequently processed, so as to further reduce the impact of hazardous waste on environmental safety;

[0036] When the filter cartridge 24 moves upward, after the filter cartridge 24 moves to a certain position, the magnetic ring a26 on the filter cartridge 24 will be magnetically connected with the magnetic ring b41 on the outer side of the working tank 21. As a result, the filter cartridge 24 moves upward and drives the magnetic ring b41 upward at the same time. The magnetic ring b41 drives the piston rod 42 upward, and one end of the piston rod 42 moves inside the piston cylinder 43, thereby changing the internal pressure of the piston cylinder 43. Since the piston cylinder 43 is connected to the feeding cylinder 45, the internal pressure of the feeding cylinder 45 is changed, thereby squeezing the additive inside the feeding cylinder 45 into the inside of the filter cartridge 24. The additive is automatically fed, saving manpower, and avoiding the need to open the working tank 21 when feeding, which causes the pungent smell inside the working tank 21 to spread and affect the staff and the working environment. In addition, when the filter cartridge 24 continues to move upward, the magnetic ring b41 contacts and squeezes the limiting ring 44 located above, causing the magnetic connection between the magnetic ring a26 and the magnetic ring b41 to be cancelled, and the magnetic ring b41 no longer moves, thereby stopping the feeding of the additive.

[0037] After the solid hazardous waste in the filter cartridge 24 is filtered, the sealing cover 33 is removed from the top of the working tank 21, and then the filter cartridge 24 is pulled out from the working tank 21, so that the solid hazardous waste in the filter cartridge 24 can be collected and subsequently processed.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid-liquid separation device for hazardous waste treatment, comprising a base (1), characterized in that: The base (1) is provided with a separation mechanism (2) for separating the solid and liquid of dangerous substances. The separation mechanism (2) comprises an operation tank (21) mounted on the base (1). A triangular cavity is provided on one side of the operation tank (21). The top of the operation tank (21) is connected to an exhaust pipe (22) and a conveying pipe (23). The base (1) is provided with a threaded shaft (28) that rotates inside the operation tank (21). A filter cartridge (24) is movable inside the operation tank (21) that moves along the threaded shaft (28) when the threaded shaft (28) rotates. After the waste enters the working tank (21) through the conveying pipe (23), it is first put into the filter cartridge (24), and the filter cartridge (24) is used to separate the solid and liquid of the waste. During the rotation of the threaded shaft (28), the filter cartridge (24) moves upward along the threaded shaft (28), and the filter cartridge (24) lifts the solid in the waste and separates it from the liquid. The filter cartridge (24) lifts the solid and moves it to the triangular cavity of the working tank (21), and the gas transmitted by the exhaust pipe (22) flows quickly to absorb the odor while accelerating the air drying of the solid inside the filter cartridge (24); A sealing assembly (3) is provided on the top of the working tank (21) for facilitating the recovery of solid waste inside the filter cartridge (24), wherein the sealing assembly (3) comprises a sealing cover (33) which is sealed and detachably connected to the working tank (21), and a sleeve (32) passes through the middle of the sealing cover (33); A feeding mechanism (4) for automatically feeding additives is arranged on one side of the working tank (21), the feeding mechanism (4) comprising a magnetic attraction ring a (26) fixed to the bottom of the filter cylinder (24), a magnetic attraction ring b (41) magnetically connected to the magnetic attraction ring a (26) slidingly arranged on the outer side of the working tank (21), a limiting ring (44) for limiting the moving distance of the magnetic attraction ring b (41) arranged on the outer side of the working tank (21), a piston rod (42) fixed on one side of the magnetic attraction ring b (41), and a feeding cylinder (45) for feeding additives is connected to one side of the working tank (21). ), one end of the feeding cylinder (45) is connected to the piston cylinder (43), and one end of the piston rod (42) extends into the interior of the piston cylinder (43); in the process of the filter cylinder (24) driving the magnetic ring a (26) to move, the magnetic ring a (26) drives the magnetic ring b (41) to move along the outer side of the working tank (21) by means of magnetic attraction force, and the magnetic ring b (41) drives one end of the piston rod (42) to move inside the piston cylinder (43), thereby changing the internal pressure of the feeding cylinder (45) and squeezing the additive inside it to be fed into the interior of the filter cylinder (24).

2. A solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: The bottom of the working tank (21) is connected to a drain pipe for discharging waste liquid.

3. A solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: One end of the exhaust pipe (22) is externally connected to a blower, and one end of the delivery pipe (23) is connected to a hazardous waste delivery pipe.

4. A solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: A motor (25) is installed at the bottom of the base (1); an output end of the motor (25) is connected to a threaded shaft (28); and threads are provided on the outer side of the threaded shaft (28).

5. A solid-liquid separation device for hazardous waste treatment according to claim 4, characterized in that: An outer tube (27) is fixed inside the filter cartridge (24), the outer tube (27) is sleeved on the outside of the threaded shaft (28), and the outer tube (27) and the outer threads of the threaded shaft (28) are connected via a ball nut pair.

6. A solid-liquid separation device for hazardous waste treatment according to claim 5, characterized in that: One end of the outer tube (27) is connected to the sleeve (32) through-and-through.

7. The solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: The sealing cover (33) is provided with an air intake pipe (35) for air intake, and the air intake pipe (35) is provided with a one-way valve a. A sealing ring is provided below the sealing cover (33) and is sealedly connected to the top of the working tank (21).

8. The solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: A buffer plate (34) is arranged on the outer side of one end of the sleeve (32) extending into the interior of the working tank (21), and the buffer plate (34) is located on one side of the conveying pipe (23).

9. The solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: The limiting rings (44) are in two groups fixed on the outside of the working tank (21), and the magnetic ring b (41) moves between the two groups of limiting rings (44).

10. The solid-liquid separation device for hazardous waste treatment according to claim 1, characterized in that: One end of the feeding cylinder (45) is provided with a liquid filling port, and one end of the piston cylinder (43) is installed with a one-way valve b.

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