Solid, liquid and gas separation equipment for sludge treatment

Abstract

The invention belongs to the technical field of sludge treatment, in particular to solid-liquid-gas separation equipment for sludge treatment, and provides the following scheme that the solid-liquid-gas separation equipment specifically comprises a feeding assembly, a purging assembly, a filter pressing assembly and a liquid discharging assembly, the feeding assembly is composed of a mixing mechanism, a high-pressure plunger pump, a feeding electromagnetic valve and a feeding tee joint which are connected through a pipeline, and the purging assembly is connected with the mixing mechanism through a pipeline; and a dosing pipe is mounted on the side surface of the mixing mechanism. The two ends of the filter cloth mechanisms can rotate, the filter cloth mechanisms are divided into two groups which are arranged in a staggered manner, the filter frame mechanism is arranged between every two layers of filter cloth mechanisms, the lifting mechanisms which are linked layer by layer are arranged between the filter cloth mechanisms and the filter frame mechanisms, and the pressurizing oil cylinders drive the lifting mechanisms to move upwards, so that the filter cloth mechanisms are driven by the pressurizing oil cylinders to move upwards. The filter cloth extruding mechanism and the filter frame mechanism are separated layer by layer, at the moment, the two filter cloth mechanisms synchronously rotate towards the two sides, then mud cakes on the filter cloth are synchronously discharged from the two sides, and the efficiency of sludge feeding, mud cake discharging and filter pressing is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sludge treatment, in particular to a solid, liquid and gas separation device for sludge treatment. Background Art

[0002] Sludge treatment involves the concentration, conditioning, dehydration, stabilization, drying, or incineration of sludge generated during sewage treatment to reduce, stabilize, and render it harmless. The goal is to reduce environmental pollution and maximize resource utilization. Treatment methods include physical, chemical, and biological methods, and are applicable to municipal sewage treatment plants and industrial wastewater treatment.

[0003] Sludge dewatering operations effectively reduce the difficulty and cost of subsequent sludge disposal. Usually, the sludge is pretreated first to improve the dewatering performance before dewatering. The most common pretreatment method is to add inorganic salts or polymer coagulants. In addition, there are also elutriation and heat treatment methods. Mechanical dewatering methods include filtration and centrifugation. Among them, filtration is to filter the wet sludge through a filter layer (porous material such as filter cloth, wire mesh) to allow water (filtrate) to penetrate the filter layer, and the dewatered sludge (filter cake) is retained on the filter layer. However, the existing sludge filter press dewatering equipment is mainly horizontal. After dehydration, the filter plates need to be opened layer by layer and the sludge between the filter plates needs to be cleaned. Therefore, the traditional sludge dewatering treatment equipment has a slow unloading speed, which affects the efficiency of sludge dewatering treatment.

[0004] In view of this, the present invention provides a solid, liquid and gas separation device for sludge treatment to solve the technical problems existing in the above-mentioned prior art. Summary of the Invention

[0005] Based on the technical problems existing in the background technology, the present invention proposes a solid, liquid and gas separation device for sludge treatment.

[0006] The present invention proposes a solid, liquid and gas separation device for sludge treatment, comprising a feed assembly, a purge assembly, a filter press assembly and a liquid discharge assembly. The feed assembly is composed of a mixing mechanism connected by pipelines, a high-pressure plunger pump, a feed solenoid valve and a feed tee. A dosing pipe is installed on the side of the mixing mechanism.

[0007] The filter press assembly includes a support frame, a pressure oil cylinder, and a multi-layer filter cloth mechanism and a filter frame mechanism stacked inside the support frame. The pressure oil cylinder is installed at the top of the support frame, and a lifting mechanism connected to the filter frame mechanism is fixedly installed at the bottom of the pressure oil cylinder.

[0008] The side of the filter frame mechanism is connected to a feed main pipe through a hose, and the other side of the filter frame mechanism is connected to a drain main pipe through a hose, and the feed main pipe is connected to a feed tee outlet;

[0009] The purge assembly includes an air pump, and a front purge solenoid valve and a rear purge solenoid valve connected to the outlet of the air pump through a pipeline, the front purge solenoid valve is connected to the feed tee, and the rear purge solenoid valve is connected to the drainage main pipe;

[0010] The drainage assembly includes a gas-liquid separation tank and a gas discharge tank, and the gas discharge tank is installed at the top of the gas-liquid separation tank through a valve, and the gas-liquid separation tank is connected to the drainage main pipe through a pipeline and a solenoid valve.

[0011] Preferably in the present invention, the filter frame mechanism includes a mounting frame, and a hanging bracket portion connected to the lifting mechanism is provided at both ends of the mounting frame, a filter frame is provided in the middle of the mounting frame, a filtrate trough is provided at the upper end of the filter frame, a filtrate pipe is provided on the side of the filtrate trough, a retractable filter press trough is provided at the lower end of the filter frame, and a liquid inlet pipe is provided on the side of the filter press trough.

[0012] In the present invention, preferably, a spirally distributed support portion is provided inside the filtrate tank, and a drainage tank connected to the filtrate pipe is provided in the middle of the support portion.

[0013] Preferably in the present invention, the filter cloth mechanism includes a filter cloth bracket, and a linkage groove adapted to the hanger portion is provided in the middle of the filter cloth bracket, winding shafts are installed at both ends of the filter cloth bracket, and filter cloth is installed between the two winding shafts, and hydraulic motors that drive the winding shaft to rotate are provided on both sides of the filter cloth bracket.

[0014] Preferably in the present invention, the filter cloth mechanisms are divided into two groups which are staggered, and the hydraulic motors on each group of filter cloth mechanisms are connected in series via oil pipes.

[0015] Preferably in the present invention, the lifting mechanism includes a filter press plate connected to the pressurized oil cylinder, and ear plates installed at both ends of the filter press plate, the bottom of the ear plate is fixedly installed with a hanging chain, and the outside of the hanging chain is fixedly installed with multiple hanging rings, and the hanging rings are fixedly connected to the hanging bracket part of the mounting frame.

[0016] In the present invention, preferably, guide grooves slidably matched with the hanging bracket are provided at both ends of the support frame, and the edge of the filter cloth mechanism is slidably connected to the inner wall of the support frame.

[0017] Preferably in the present invention, slag discharge mechanisms are provided on both sides of the support frame, and the slag discharge mechanism includes a slag discharge frame, a conveyor belt driven by a motor and a roller is installed inside the slag discharge frame, and collection frames with a V-shaped structure are provided on both sides of the slag discharge frame.

[0018] Preferably in the present invention, the slag discharge mechanism further comprises a crushing motor mounted at the end of the slag discharge frame, and a crushing shaft is mounted at the end of the output shaft of the crushing motor, and propeller blades are arranged on the outside of the crushing shaft, and the propeller blades are distributed in the middle of the collecting frame.

[0019] Preferably in the present invention, the mixing mechanism includes a mixing tank, and a mixing motor is installed on the top of the mixing tank, a stirring shaft is fixedly installed on the bottom end of the output shaft of the mixing motor, and a plurality of stirring rods are provided on the outside of the stirring shaft.

[0020] Compared with the prior art, the present invention provides a solid, liquid and gas separation device for sludge treatment, which has the following beneficial effects:

[0021] In the present invention, both ends of the filter cloth mechanism can rotate, and the filter cloth mechanism is divided into two groups arranged alternately, and a filter frame mechanism is arranged between each layer of the filter cloth mechanism, and a lifting mechanism is arranged between the filter cloth mechanism and the filter frame mechanism. The sludge slurry is transported to the feed tee and the feed main pipe through a high-pressure plunger pump, and is distributed to each layer of the filter frame mechanism through the feed main pipe. The filtrate of the sludge slurry through the filter cloth mechanism enters the gas-liquid separation tank through the drainage main pipe, and the waste gas and solution in the filtrate are separated. After that, the feed solenoid valve is closed, and the pressurized oil cylinder drives the lifting mechanism to move downward, squeezing the filter cloth mechanism and the filter frame mechanism, and the filter frame mechanism is lifted. The filtered sludge is compressed into a mud cake, and then the pressurized cylinder drives the lifting mechanism to move upward, so that the filter cloth squeezing mechanism and the filter frame mechanism are separated layer by layer. At this time, the two sets of filter cloth mechanisms rotate synchronously to both sides, and then the mud cake on the filter cloth is discharged from both sides synchronously. During the discharge process, the front purge solenoid valve is opened to clean the sludge residue remaining on the filter cloth and filter frame mechanism. After the sludge residue is discharged, the filter cloth squeezing mechanism and the filter frame mechanism are stacked and reset. At this time, the rear purge solenoid valve is opened to reversely purge the drainage main pipe and the filter cloth mechanism to prepare for the next sludge solid, liquid and gas separation, thereby improving the efficiency of sludge feeding, mud cake discharging and filter pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0023] Figure 2 This is a side structural diagram of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0024] Figure 3 This is a schematic diagram of the distribution of the slag discharge mechanism of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0025] Figure 4 This is a schematic structural diagram of a filter press assembly for a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of a mixing mechanism of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of a slag discharge mechanism of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0028] Figure 7 This is a schematic diagram of the distribution of the filter frame mechanism and the lifting mechanism of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0029] Figure 8 This is a schematic diagram of the filter cloth structure of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0030] Figure 9 This is a schematic diagram of the distribution structure of the filter frame mechanism of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0031] Figure 10 This is a schematic diagram of the filter frame structure of a solid, liquid and gas separation device for sludge treatment proposed by the present invention;

[0032] Figure 11 This is a schematic diagram of the lifting mechanism structure of a solid, liquid and gas separation equipment for sludge treatment proposed by the present invention.

[0033] In the figure: 1 support frame, 2 guide groove, 3 mixing mechanism, 31 stirring rod, 32 mixing motor, 33 stirring shaft, 34 mixing tank, 4 high pressure plunger pump, 5 gas-liquid separation tank, 6 gas discharge tank, 7 pressurized oil cylinder, 8 lifting mechanism, 81 filter plate, 82 ear plate, 83 hanging chain, 84 hanging ring, 9 feed tee, 10 feed main pipe, 11 filter cloth mechanism, 111 filter cloth bracket, 112 linkage groove, 113 winding shaft, 11 4 hydraulic motor, 115 filter cloth, 12 slag discharge mechanism, 121 slag discharge rack, 122 collecting frame, 123 conveyor belt, 124 propeller blade, 125 crushing motor, 13 air pump, 14 drainage main pipe, 15 rear purge solenoid valve, 16 front purge solenoid valve, 17 feed solenoid valve, 18 filter frame mechanism, 181 mounting frame, 182 filtrate tank, 183 filter press tank, 184 liquid inlet pipe, 185 filtrate pipe, 186 support part. DETAILED DESCRIPTION

[0034] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0035] Reference Figure 1-11A solid, liquid and gas separation device for sludge treatment, including a feed assembly, a purge assembly, a filter press assembly and a drainage assembly. The feed assembly is composed of a mixing mechanism 3, a high-pressure plunger pump 4, a feed solenoid valve 17 and a feed tee 9 connected by pipelines. A dosing pipe is installed on the side of the mixing mechanism 3;

[0036] The filter press assembly includes a support frame 1, a pressure cylinder 7, and a multi-layer filter cloth mechanism 11 and a filter frame mechanism 18 stacked inside the support frame 1. The pressure cylinder 7 is installed at the top of the support frame 1, and a lifting mechanism 8 connected to the filter frame mechanism 18 is fixedly installed at the bottom of the pressure cylinder 7.

[0037] The side of the filter frame mechanism 18 is connected to the feed main pipe 10 through a hose, and the other side of the filter frame mechanism 18 is connected to the drain main pipe 14 through a hose. The feed main pipe 10 is connected to the outlet of the feed tee 9;

[0038] The purge assembly includes an air pump 13, and a front purge solenoid valve 16 and a rear purge solenoid valve 15 connected to the outlet of the air pump 13 through a pipeline. The front purge solenoid valve 16 is connected to the feed tee 9, and the rear purge solenoid valve 15 is connected to the drain main pipe 14;

[0039] The drainage assembly includes a gas-liquid separation tank 5 and a gas discharge tank 6, and the gas discharge tank 6 is installed at the top position of the gas-liquid separation tank 5 through a valve, and the gas-liquid separation tank 5 is connected to the drainage main pipe 14 through a pipeline and a solenoid valve.

[0040] In the present invention, both ends of the filter cloth mechanism 11 can rotate, and the filter cloth mechanism 11 is divided into two groups arranged alternately, and a filter frame mechanism 18 is provided between each layer of the filter cloth mechanism 11, and a lifting mechanism 8 is provided between the filter cloth mechanism 11 and the filter frame mechanism 18. The sludge slurry is transported to the feed tee 9 and the feed main pipe 10 through the high-pressure plunger pump 4, and is distributed to each layer of the filter frame mechanism 18 through the feed main pipe 10. The filtrate of the sludge slurry through the filter cloth mechanism 11 enters the gas-liquid separation tank 5 through the drain main pipe 14 to separate the waste gas and solution in the filtrate. After that, the feed solenoid valve 17 is closed, and the pressurized oil cylinder 7 drives the lifting mechanism 8 to move downward, squeezing the filter cloth mechanism 11 and the filter frame mechanism 18. The sludge filtered by the filter frame mechanism 18 is compressed into a mud cake. After that, the pressurized oil cylinder 7 drives the lifting mechanism 8 to move upward, so that the filter cloth mechanism 11 and the filter frame mechanism 18 are separated layer by layer. At this time, the two groups of filter cloth mechanisms 11 rotate synchronously to both sides, and then the mud cake on the filter cloth is discharged synchronously from both sides. During the discharge process, the front purge solenoid valve 16 is opened to clean the sludge residue remaining on the filter cloth and the filter frame mechanism 18. After the sludge residue is discharged, the filter cloth mechanism 11 and the filter frame mechanism 18 are stacked and reset. At this time, the rear purge solenoid valve 15 is opened to reversely purge the drainage main pipe 14 and the filter cloth mechanism 11 to prepare for the next sludge solid, liquid and gas separation, thereby improving the efficiency of sludge feeding, mud cake discharging and filter pressing.

[0041] As a further solution in the present invention, the filter frame mechanism 18 includes a mounting frame 181, and the two ends of the mounting frame 181 are provided with a hanging frame portion connected to the lifting mechanism 8, the middle part of the mounting frame 181 is provided with a filter frame, the upper end of the filter frame is provided with a filtrate trough 182, the side of the filtrate trough 182 is provided with a filtrate pipe 185, the lower end of the filter frame is provided with a retractable filter press trough 183, and the side of the filter press trough 183 is provided with a liquid inlet pipe 184. In the present invention, the sludge slurry enters the filter press trough 183 through the liquid inlet pipe 184, and the sludge slurry is filtered through the filter cloth mechanism 11 of the lower layer. The filtrate is discharged from the filtrate trough 182 and the filtrate pipe 185 of the lower layer. After the filter cloth mechanism 11 and the filter frame mechanism 18 are pressurized and filtered, the filter cake is retained on the surface of the filter cloth mechanism 11, and the sludge dehydration operation can be completed.

[0042] As a further solution in the present invention, a spirally distributed support portion 186 is provided inside the filtrate tank 182, and a drainage trough connected to the filtrate pipe 185 is provided in the middle of the support portion 186. In the present invention, the support portion 186 provides effective support for the upper filter cloth mechanism 11, and when the sludge slurry enters the filter frame mechanism 18, compressed air is introduced into the filtrate tank 182 through the filtrate pipe 185, and the compressed air is used to blow the pores on the surface of the filter cloth mechanism 11 upward, thereby effectively clearing the surface of the filter cloth mechanism 11 and accelerating the efficiency of sludge filter pressing and dehydration.

[0043] As a further solution in the present invention, the filter cloth mechanism 11 includes a filter cloth bracket 111, and a linkage groove 112 adapted to the hanger portion is provided in the middle of the filter cloth bracket 111, and a winding shaft 113 is installed at both ends of the filter cloth bracket 111, and a filter cloth 115 is installed between the two winding shafts 113, and a hydraulic motor 114 is provided on both sides of the filter cloth bracket 111 to drive the winding shaft 113 to rotate. In the present invention, when the filter cloth mechanism 11 and the filter frame mechanism 18 are separated, the sludge filter cake stays on the surface of the filter cloth 115, and the hydraulic motor 114 drives the winding shaft 113 to rotate, which can drive the filter cake to one side through the filter cloth 115, and quickly move the filter cake out of the surface of the filter cloth 115. After the filter cake is discharged, the filter cloth 115 is reset under the action of the hydraulic motor 114 and enters the next filter pressing operation.

[0044] As a further solution in the present invention, the filter cloth mechanism 11 is divided into two groups that are staggered, and the hydraulic motors 114 on each group of filter cloth mechanisms 11 are connected in series through oil pipes. In the present invention, the two groups of staggered filter cloth mechanisms 11 respectively dump filter cakes to the positions on both sides of the filter press assembly, and the hydraulic motors 114 on each group of filter cloth mechanisms 11 are connected in series through oil pipes, thereby realizing the synchronous unloading operation of the two groups of filter cloth mechanisms 11, significantly improving the speed of the equipment in discharging sludge filter cakes, and improving the sludge filter pressing efficiency.

[0045] As a further solution in the present invention, the lifting mechanism 8 includes a filter press plate 81 connected to the pressurized oil cylinder 7, and ear plates 82 installed at both ends of the filter press plate 81. The bottom of the ear plate 82 is fixedly installed with a hanging chain 83, and the outer side of the hanging chain 83 is fixedly installed with multiple hanging rings 84, and the hanging ring 84 is fixedly connected to the hanging part of the mounting bracket 181. In the present invention, the multi-layer filter frame mechanism 18 is connected by the hanging chain 83 and the hanging ring 84, and each layer of filter cloth mechanism 11 is linked to the filter frame mechanism 18 by the hanging part inserted in the linkage groove 112. When the filter press plate 81 moves upward, the hanging chain 83 and the hanging ring 84 lift the filter frame mechanism 18 layer by layer from top to bottom, and drive the filter cloth mechanism 11 to move synchronously, so as to realize the separation operation of the filter frame mechanism 18 and the filter cloth mechanism 11 layer by layer. After the slag discharge is completed, the filter press plate 81 moves downward, and the filter frame mechanism 18 and the filter cloth mechanism 11 are stacked and fixed layer by layer under the action of gravity, which is simple and convenient to operate.

[0046] As a further solution in the present invention, guide grooves 2 that slide with the hanging bracket are provided at both ends of the support frame 1, and the edge of the filter cloth mechanism 11 is slidably connected to the inner wall of the support frame 1. In the present invention, the filter frame mechanism 18 and the filter cloth mechanism 11 both move up and down inside the support frame 1, and the movement of the filter frame mechanism 18 is constrained by the guide groove 2. At the same time, when the lifting mechanism 8 descends, the hanging chain 83 bends and hides in the guide groove 2, thereby improving the stability of the filter frame mechanism 18 and the filter cloth mechanism 11 during movement.

[0047] As a further solution in the present invention, slag discharge mechanisms 12 are provided on both sides of the support frame 1, and the slag discharge mechanism 12 includes a slag discharge frame 121, and a conveyor belt 123 driven by a motor and a roller is installed inside the slag discharge frame 121, and a collection frame 122 with a V-shaped structure is provided on both sides of the slag discharge frame 121. In the present invention, the filter cake discharged by the filter cloth mechanism 11 falls into the slag discharge frame 121, and the sludge filter cake is transferred by relying on the conveyor belt 123 in the slag discharge frame 121.

[0048] As a further solution in the present invention, the slag discharge mechanism 12 also includes a crushing motor 125 installed at the end of the slag discharge frame 121, and the output shaft end of the crushing motor 125 is installed with a crushing shaft, and the outer side of the crushing shaft is provided with a propeller blade 124, and the propeller blade 124 is distributed in the middle of the collecting frame 122. In the present invention, when the filter cake dumped by the filter cloth mechanism 11 enters the collecting frame 122, the filter cake is crushed by the rotating propeller blade 124, and the filter cake is given an outward thrust, thereby accelerating the speed of conveying the sludge filter cake and avoiding the phenomenon of filter cake conveying blockage.

[0049] As a further solution in the present invention, the mixing mechanism 3 includes a mixing tank 34, and a mixing motor 32 is installed on the top of the mixing tank 34, a stirring shaft 33 is fixedly installed on the bottom end of the output shaft of the mixing motor 32, and a plurality of stirring rods 31 are provided on the outside of the stirring shaft 33. In the present invention, the sludge enters the mixing tank 34, is mixed with the agent, and the sludge slurry is stirred and mixed by the stirring shaft 33 and the stirring rod 31, so that the sludge slurry and the added agent are fully mixed.

[0050] During use, the sludge slurry is transported to the feed tee 9 and the feed main pipe 10 through the high-pressure plunger pump 4, and is distributed to each layer of the filter frame mechanism 18 through the feed main pipe 10. The filtrate of the sludge slurry through the filter cloth mechanism 11 enters the gas-liquid separation tank 5 through the drainage main pipe 14 to separate the waste gas and solution in the filtrate. After that, the feed solenoid valve 17 is closed, and the pressurized oil cylinder 7 drives the lifting mechanism 8 to move downward, squeezing the filter cloth mechanism 11 and the filter frame mechanism 18, and compressing the sludge filtered by the filter frame mechanism 18 into a mud cake. After that, the pressurized oil cylinder 7 drives the lifting mechanism 8 moves upward, so that the filter cloth mechanism 11 and the filter frame mechanism 18 are separated layer by layer. At this time, the two groups of filter cloth mechanisms 11 rotate synchronously to both sides, and then the mud cake on the filter cloth is discharged synchronously from both sides. During the discharge process, the front purge solenoid valve 16 is opened to clean the sludge residue remaining on the filter cloth and the filter frame mechanism 18. After the sludge residue is discharged, the filter cloth mechanism 11 and the filter frame mechanism 18 are stacked and reset. At this time, the rear purge solenoid valve 15 is opened to reversely purge the drainage main pipe 14 and the filter cloth mechanism 11 to prepare for the next sludge solid, liquid and gas separation.

[0051] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A solid, liquid and gas separation device for sludge treatment, comprising a feed assembly, a purge assembly, a filter press assembly and a liquid discharge assembly, characterized in that: The feeding assembly is composed of a mixing mechanism (3), a high-pressure plunger pump (4), a feeding solenoid valve (17) and a feeding tee (9) connected by pipelines, and a dosing pipe is installed on the side of the mixing mechanism (3); The filter press assembly comprises a support frame (1), a pressure oil cylinder (7), a multi-layer filter cloth mechanism (11) and a filter frame mechanism (18) stacked inside the support frame (1), the pressure oil cylinder (7) being mounted at the top of the support frame (1), and a lifting mechanism (8) connected to the filter frame mechanism (18) being fixedly mounted at the bottom of the pressure oil cylinder (7); A side of the filter frame mechanism (18) is connected to a feed main pipe (10) via a hose, and another side of the filter frame mechanism (18) is connected to a drain main pipe (14) via a hose, and the feed main pipe (10) is connected to an outlet of a feed tee (9); The purge assembly includes an air pump (13), and a front purge solenoid valve (16) and a rear purge solenoid valve (15) connected to the outlet of the air pump (13) through a pipeline, the front purge solenoid valve (16) is connected to the feed tee (9), and the rear purge solenoid valve (15) is connected to the drainage main pipe (14); The liquid discharge assembly comprises a gas-liquid separation tank (5) and a gas discharge tank (6), wherein the gas discharge tank (6) is installed at the top of the gas-liquid separation tank (5) through a valve, and the gas-liquid separation tank (5) is connected to the liquid discharge main pipe (14) through a pipeline and a solenoid valve.

2. The solid, liquid and gas separation equipment for sludge treatment according to claim 1, characterized in that: The filter frame mechanism (18) comprises a mounting frame (181), and a hanger portion connected to the lifting mechanism (8) is provided at both ends of the mounting frame (181); a filter frame is provided in the middle of the mounting frame (181); a filtrate trough (182) is provided at the upper end of the filter frame; a filtrate pipe (185) is provided on the side of the filtrate trough (182); a retractable filter press trough (183) is provided at the lower end of the filter frame; and a liquid inlet pipe (184) is provided on the side of the filter press trough (183).

3. The solid, liquid and gas separation equipment for sludge treatment according to claim 2, characterized in that: The interior of the filtrate tank (182) is provided with a spirally distributed support portion (186), and the middle of the support portion (186) is provided with a drainage tank connected to the filtrate pipe (185).

4. The solid, liquid and gas separation equipment for sludge treatment according to claim 3, characterized in that: The filter cloth mechanism (11) comprises a filter cloth bracket (111), and a linkage groove (112) adapted to the hanger portion is provided in the middle of the filter cloth bracket (111), winding shafts (113) are installed at both ends of the filter cloth bracket (111), and a filter cloth (115) is installed between the two winding shafts (113), and a hydraulic motor (114) for driving the winding shaft (113) to rotate is provided at both sides of the filter cloth bracket (111).

5. The solid, liquid and gas separation equipment for sludge treatment according to claim 4, characterized in that: The filter cloth mechanisms (11) are divided into two groups and are staggered, and the hydraulic motors (114) on each group of filter cloth mechanisms (11) are connected in series via oil pipes.

6. The solid, liquid and gas separation equipment for sludge treatment according to claim 3, characterized in that: The lifting mechanism (8) comprises a filter press plate (81) connected to the pressurized oil cylinder (7), and ear plates (82) installed at both ends of the filter press plate (81), a hanging chain (83) is fixedly installed at the bottom of the ear plate (82), and a plurality of hanging rings (84) are fixedly installed on the outside of the hanging chain (83), and the hanging rings (84) are fixedly connected to the hanging rack portion of the mounting frame (181).

7. The solid, liquid and gas separation equipment for sludge treatment according to claim 6, characterized in that: Both ends of the support frame (1) are provided with guide grooves (2) that slidably cooperate with the hanging frame portion, and the edge of the filter cloth mechanism (11) is slidably connected to the inner wall of the support frame (1).

8. The solid, liquid and gas separation equipment for sludge treatment according to claim 1, characterized in that: Slag discharge mechanisms (12) are provided on both sides of the support frame (1), and the slag discharge mechanism (12) comprises a slag discharge frame (121), a conveyor belt (123) driven by a motor and a roller is installed inside the slag discharge frame (121), and collection frames (122) distributed in a V-shaped structure are provided on both sides of the slag discharge frame (121).

9. The solid, liquid and gas separation equipment for sludge treatment according to claim 8, characterized in that: The slag discharge mechanism (12) further comprises a crushing motor (125) mounted at the end of the slag discharge frame (121), and a crushing shaft is mounted at the end of the output shaft of the crushing motor (125), and propeller blades (124) are arranged on the outside of the crushing shaft, and the propeller blades (124) are distributed in the middle of the collection frame (122).

10. The solid, liquid and gas separation equipment for sludge treatment according to claim 1, characterized in that: The mixing mechanism (3) comprises a mixing tank (34), and a mixing motor (32) is installed on the top of the mixing tank (34). A stirring shaft (33) is fixedly installed on the bottom end of the output shaft of the mixing motor (32), and a plurality of stirring rods (31) are arranged on the outside of the stirring shaft (33).

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