Ultra-high pressure filter press for sludge dewatering

Abstract

The present invention belongs to the technical field of sludge treatment, and discloses a ultra-high pressure filter press for sludge dewatering, including a filtering mechanism. The filtering mechanism includes a filtering frame, a groove is formed on the side surface of the filtering frame, and a first filter plate is fixedly connected to the top of the filtering frame; through the cooperation of structures such as a gear disc and teeth, the present invention facilitates the adjustment of the aperture size through which the filtrate can pass. At the initial stage of dewatering, when the water content of the sludge is high, the aperture size through which the filtrate can pass is the size of the first filter holes. At this time, the porosity is relatively large, and the free water in the sludge will be discharged under the action of its own gravity to facilitate rapid drainage. As the pressure filter housing rotates, the gear disc will, under the action of two groups of teeth, reduce the aperture size through which the filtrate can pass to the minimum, avoiding the situation that the particulate matter in the sludge passes through the first filter plate and the gear disc. The aperture size is automatically adjusted with the dewatering process, which can improve the dewatering effect, and increase the dewatering efficiency and the solid content of the sludge cake.

Description

Technical Field

[0001] The present invention belongs to the technical field of sludge treatment, and specifically relates to an ultra-high pressure filter press for sludge dewatering. Background Art

[0002] In modern society, with the acceleration of the industrialization and urbanization processes, a large amount of sludge is generated during various industrial productions and urban sewage treatments. These sludges contain a large amount of water. If effective dewatering treatment is not carried out, it will not only occupy a large amount of storage space, but also bring a series of environmental and management problems. Generally, a filter press is used to treat the sludge.

[0003] Most of the existing filter presses for sludge dewatering place the sludge above the filter cloth and squeeze out the water in the sludge through a hydraulic method. In the initial stage of dewatering, the sludge has a high water content, the aperture of the filter screen is small, and the free water in the sludge drains slowly. Directly squeezing out the free water in the sludge through a hydraulic method may cause the filter screen to rupture or the pressure filtration to be insufficient, resulting in a poor pressure filtration effect. Therefore, an ultra-high pressure filter press for sludge dewatering is proposed. Summary of the Invention

[0004] To solve the problems raised in the above background art, that is, most place the sludge above the filter cloth and squeeze out the water in the sludge through a hydraulic method. In the initial stage of dewatering, the sludge has a high water content, the aperture of the filter screen is small, and the free water in the sludge drains slowly. Directly squeezing out the free water in the sludge through a hydraulic method may cause the filter screen to rupture or the pressure filtration to be insufficient, resulting in a poor pressure filtration effect, the present invention provides an ultra-high pressure filter press for sludge dewatering.

[0005] To achieve the above object, the present invention provides the following technical solution: An ultra-high pressure filter press for sludge dewatering, including a filtering mechanism, a cleaning mechanism is arranged inside the filtering mechanism, the filtering mechanism is arranged inside a pressure filtration mechanism, and the pressure filtration mechanism is arranged inside a main body mechanism;

[0006] The filtering mechanism includes a filtering frame, a groove is formed on the side surface of the filtering frame, a first filter plate is fixedly connected to the top of the filtering frame, a plurality of first filter holes are evenly formed on the first filter plate, a first sliding groove is formed inside the filtering frame, a toothed disc is rotatably connected inside the first sliding groove, a convex block is fixedly connected to the top of the toothed disc, a ventilation hole is formed on the side of the filtering frame away from the groove, two clamping blocks are rotatably connected inside the first sliding groove, the clamping blocks are elastically connected to the inner wall of the first sliding groove through springs, and a fixing hole is formed on the side of the filtering frame close to the ventilation hole.

[0007] Preferably, the fixing holes are located above the ventilation holes, the first sliding grooves are located between the fixing holes and the grooves, a plurality of first filtering holes are evenly formed in the toothed disc, the toothed disc is rotatably connected to the bottom of the first filter plate through bumps, the clamping blocks are located on one side of the first sliding grooves away from the grooves, the outer shape of the clamping blocks is "L"-shaped, and one side of the clamping blocks away from the springs is clamped to the side surface of the toothed disc.

[0008] Preferably, the cleaning mechanism includes a second filter plate, an air inlet hole is formed in the second filter plate, a cavity is formed inside the second filter plate, a plurality of second filtering holes are evenly formed in the top of the second filter plate, the inner wall of the second filtering holes communicates with the cavity through cleaning holes, a rotating plate is arranged below the second filter plate, a plurality of third filtering holes are evenly formed in the rotating plate, and a first motor is arranged on the side surface of the rotating plate.

[0009] Preferably, one side direction of the cleaning holes close to the second filtering holes is obliquely downward, the air inlet hole communicates with the cavity, the side surface of the rotating plate is rotatably connected to the first motor through a rotating shaft, the outer shape of the second filtering holes is conical, and the size of the third filtering holes is adapted to the size of the smaller cross-section of the second filtering holes.

[0010] Preferably, the size of the third filtering holes is smaller than that of the first filtering holes, the size of the larger cross-section of the second filtering holes is adapted to the size of the first filtering holes, the second filter plate is fixedly connected to the bottom of the filtering frame, and the air inlet hole communicates with the ventilation hole.

[0011] Preferably, the pressure filtration mechanism includes a second motor, a gear is rotatably connected to the bottom of the second motor, a pressure filtration outer shell is arranged on the side surface of the gear, a plurality of teeth are fixedly connected to the side surface of the pressure filtration outer shell, four pressure filtration chambers are evenly formed in the top of the pressure filtration outer shell, a rotating cylinder is rotatably connected to the center of the pressure filtration outer shell, the bottom of the pressure filtration outer shell is rotatably connected to the top of the main body outer shell, a plurality of filter meshes are arranged between the rotating cylinder and the main body outer shell, four pressure intensifiers are fixedly connected to the side surface of the main body outer shell, air outlet holes are formed in one side of the four pressure intensifiers close to each other, and four second sliding grooves are evenly formed in the side surface of the pressure filtration outer shell.

[0012] Preferably, four groups of teeth are fixedly connected to the side surface of the rotating cylinder, the four groups of teeth and the four second sliding grooves are arranged in a staggered manner, the side surface of the pressure filtration outer shell is meshed with the gear through the teeth, the four groups of teeth are located above the filter meshes, the air outlet holes are located above the main body outer shell, and the four pressure intensifiers are respectively located on one side of the four groups of teeth close to the pressure filtration outer shell.

[0013] Preferably, the size of the second chute is adapted to the size of the filter rack. The filter rack is slidably connected to the second chute. A first chute is formed inside the pressure filter housing. Four sets of teeth on the rotating cylinder are slidably connected to the first chute. The rotating cylinder is located between the four filter racks. The first chute inside the filter rack communicates with the first chute inside the pressure filter housing. The first motor is fixedly connected to the side of the pressure filter housing. The second filter plate is rotatably connected to the inner wall of the pressure filter housing. The teeth on the rotating cylinder mesh with the toothed disc.

[0014] Preferably, the main body mechanism includes a support plate. A connecting plate is fixedly connected to the top of the support plate. A hydraulic cylinder is fixedly connected to the top of the connecting plate. A pressure plate is slidably connected to the bottom of the hydraulic cylinder. Two spreaders are arranged above the pressure filter housing. Two cylinders are fixedly connected to the bottom of the support plate. A magnetic attraction telescopic rod is slidably connected to one side of the cylinder close to the pressure filter housing. Two conveyor belts are arranged on the side of the main body housing.

[0015] Preferably, the pressure plate is located below the connecting plate. The conveyor belts are located below the support plate. The two spreaders and the two connecting plates are respectively located on one side of the four pressure filter chambers away from each other. The size of the pressure plate is adapted to the size of the pressure filter chamber. One end of the magnetic attraction telescopic rod away from the cylinder is aligned with the fixing hole. The bottom of the second motor is fixedly connected to the top of the support plate. The gear is rotatably connected to the bottom of the support plate.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] By setting the cooperation of structures such as the toothed disc and the teeth, the present invention facilitates the adjustment of the aperture size through which the filtrate can pass. In the initial stage of dehydration, when the water content of the sludge is high, the aperture size through which the filtrate can pass is the size of the first filter holes. At this time, the porosity is relatively large, and the free water in the sludge will be discharged under the action of its own gravity to facilitate rapid drainage. As the pressure filter housing rotates, the toothed disc will reduce the aperture size through which the filtrate can pass to the minimum under the action of the two sets of teeth, avoiding the situation that the particulate matter in the sludge passes through the first filter plate and the toothed disc. The aperture size is automatically adjusted with the dehydration process, which can improve the dehydration effect, and improve the dehydration efficiency and the solid content of the filter cake.

[0018] The present invention facilitates the cleaning of the inside of the second filter hole and the first filter hole by arranging the coordination of structures such as the air inlet hole and the cleaning hole. The high-pressure gas is injected into the second filter hole through the air outlet hole by the pressurizer to impact the particles inside the second filter hole, so that the particles are flushed back from the second filter hole and the first filter hole to the inside of the filter press chamber under the action of the high-pressure gas. During the rotation of the filter press shell, the inside of the filter hole will be impacted by the high-pressure gas twice, so the inside of the first filter hole can be cleaned, ensuring that the toothed disc can rotate smoothly, avoiding the particles in the sludge from blocking the rotation of the toothed disc and affecting the misalignment between the first filter hole on the first filter plate and the first filter hole on the toothed disc, reducing the wear of components, extending the service life of the device, and preventing the occurrence of local blockage affecting the dehydration speed. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is a bottom view structural diagram of the main mechanism of the present invention;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the filter press mechanism of the present invention;

[0022] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0023] Figure 5 A schematic diagram of the structural relationship between the filter press housing and the second filter plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the cross-sectional structure of the filtering mechanism of the present invention;

[0025] Figure 7 For the present invention Figure 6 The enlarged structural diagram at B in the middle;

[0026] Figure 8 It is a schematic diagram of the structure of the filter press mechanism of the present invention from a top view;

[0027] Figure 9 It is a schematic diagram of the explosion structure of the filtering mechanism of the present invention.

[0028] In the figure: 1. Filtering mechanism; 101. Filter rack; 102. Groove; 103. First filter plate; 104. First filter hole; 105. First sliding groove; 106. Tooth disc; 107. Protrusion; 108. Ventilation hole; 109. Clamping block; 110. Spring; 111. Fixing hole; 2. Cleaning mechanism; 201. Second filter plate; 202. Air inlet hole; 203. Cavity; 204. Cleaning hole; 205. Second filter hole; 206. Rotating plate; 207. Third filter hole; 208. First motor; 3. Pressure filtration mechanism; 301. Second motor; 302. Gear; 303. Pressure filtration outer shell; 304. Tooth; 305. Pressure filtration chamber; 306. Rotary drum; 307. Main body outer shell; 308. Filter screen; 309. Pressurizer; 310. Air outlet hole; 311. Second sliding groove; 4. Main body mechanism; 401. Support plate; 402. Connecting plate; 403. Hydraulic cylinder; 404. Pressing plate; 405. Feeder; 406. Cylinder; 407. Magnetic adsorption telescopic rod; 408. Conveyor belt. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] As Figures 1 to 9 shown, the present invention provides an ultra-high pressure filter press for sludge dewatering, including a filtering mechanism 1. A cleaning mechanism 2 is arranged inside the filtering mechanism 1. The filtering mechanism 1 is arranged inside a pressure filtration mechanism 3, and the pressure filtration mechanism 3 is arranged inside a main body mechanism 4;

[0031] The filtering mechanism 1 includes a filter rack 101. A groove 102 is formed on the side surface of the filter rack 101. The top of the filter rack 101 is fixedly connected with a first filter plate 103. A plurality of first filter holes 104 are uniformly formed on the first filter plate 103. A first sliding groove 105 is formed inside the filter rack 101. A tooth disc 106 is rotatably connected inside the first sliding groove 105. The top of the tooth disc 106 is fixedly connected with a protrusion 107. A ventilation hole 108 is formed on one side of the filter rack 101 away from the groove 102. Two clamping blocks 109 are rotatably connected inside the first sliding groove 105. The clamping blocks 109 are elastically connected with the inner wall of the first sliding groove 105 through springs 110. A fixing hole 111 is formed on one side of the filter rack 101 close to the ventilation hole 108.

[0032] The fixing hole 111 is located above the ventilation hole 108. The first chute 105 is located between the fixing hole 111 and the groove 102. A number of first filter holes 104 are evenly formed in the toothed disc 106. The toothed disc 106 is rotatably connected between the bottom of the first filter plate 103 through the convex block 107. The clamping block 109 is located on the side of the first chute 105 away from the groove 102. The outer shape of the clamping block 109 is in an "L" shape. The side of the clamping block 109 away from the spring 110 is clamped with the side surface of the toothed disc 106.

[0033] The pressure filtration mechanism 3 includes a second motor 301. A gear 302 is rotatably connected to the bottom of the second motor 301. A pressure filtration outer shell 303 is arranged on the side of the gear 302. A number of teeth 304 are fixedly connected to the side of the pressure filtration outer shell 303. Four pressure filtration chambers 305 are evenly formed at the top of the pressure filtration outer shell 303. A rotating cylinder 306 is rotatably connected to the center of the pressure filtration outer shell 303. The pressure filtration outer shell 303 is rotatably connected between the bottom of the main body outer shell 307. A number of filter meshes 308 are arranged between the rotating cylinder 306 and the main body outer shell 307. Four pressurizers 309 are fixedly connected to the side of the main body outer shell 307. Air outlet holes 310 are formed on the sides of the four pressurizers 309 close to each other. Four second chutes 311 are evenly formed on the side of the pressure filtration outer shell 303. Four groups of teeth 304 are fixedly connected to the side of the rotating cylinder 306. The four groups of teeth 304 and the four second chutes 311 are arranged in a staggered manner. The side of the pressure filtration outer shell 303 is meshed with the gear 302 through the teeth 304. The four groups of teeth 304 are located above the filter meshes 308. The air outlet holes 310 are located above the main body outer shell 307. The four pressurizers 309 are respectively located on the sides of the four groups of teeth 304 close to the pressure filtration outer shell 303.

[0034] Adopting the above scheme: By setting the cooperation of structures such as the toothed disc 106 and the teeth 304, it is convenient to adjust the aperture size through which the filtrate can pass. In the initial stage of dehydration, when the water content of the sludge is high and the particles are relatively fine, the aperture size through which the filtrate can pass is the size of the first filter hole 104. At this time, the porosity is relatively large, and the free water in the sludge will successively pass through the first filter hole 104, the second filter hole 205, and the third filter hole 207 under the action of its own gravity, and then flow into the collection device below the main housing 307 through the filtration of several layers of filter meshes 308 for rapid drainage. As the pressure filter housing 303 rotates, the free water in the sludge is gradually discharged under the action of its own gravity, and the sludge gradually thickens. When the pressure filter housing 303 rotates 45°, the toothed disc 106 will be driven by the rotation of the pressure filter housing 303 to engage with the teeth 304 on the rotating cylinder 306. Subsequently, as the pressure filter housing 303 continues to rotate, it will cause the toothed disc 106 to rotate along the clamping block 109 in the direction close to the clamping position through the teeth 304 on the rotating cylinder 306, driving the misalignment between the first filter hole 104 on the toothed disc 106 and the first filter hole 104 on the first filter plate 103, reducing the aperture size through which the water can pass. When the pressure filter housing 303 rotates 180°, the free water in the sludge is basically discharged from the inside of the pressure filter housing 303, and the sludge will become the thickest. Moreover, the toothed disc 106 will reduce the aperture size through which the filtrate can pass to the minimum under the action of the two groups of teeth 304, avoiding the situation where the particulate matter in the sludge passes through the first filter plate 103 and the toothed disc 106. The aperture size is automatically adjusted with the dehydration process, which can improve the dehydration effect, and increase the dehydration efficiency and the solid content rate of the filter cake.

[0035] As Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 9 shown, the cleaning mechanism 2 includes a second filter plate 201. An air inlet hole 202 is provided on the second filter plate 201. A cavity 203 is provided inside the second filter plate 201. A plurality of second filter holes 205 are evenly provided at the top of the second filter plate 201. The inner wall of the second filter hole 205 is communicated with the cavity 203 through a cleaning hole 204. A rotating plate 206 is provided below the second filter plate 201. A plurality of third filter holes 207 are evenly provided on the rotating plate 206. A first motor 208 is provided on the side of the rotating plate 206.

[0036] The side of the cleaning hole 204 close to the second filter hole 205 slopes downward. The air inlet hole 202 communicates with the cavity 203. The side surface of the rotating plate 206 is rotatably connected to the first motor 208 through a rotating shaft. The outer shape of the second filter hole 205 is conical. The size of the third filter hole 207 is adapted to the size of the smaller cross-section of the second filter hole 205. The size of the third filter hole 207 is smaller than the size of the first filter hole 104. The size of the larger cross-section of the second filter hole 205 is adapted to the size of the first filter hole 104. The second filter plate 201 is fixedly connected to the bottom of the filter rack 101. The air inlet hole 202 communicates with the ventilation hole 108.

[0037] The size of the second sliding groove 311 is adapted to the size of the filter rack 101. The filter rack 101 is slidably connected to the second sliding groove 311. A first sliding groove 105 is formed inside the pressure filter housing 303. Four sets of teeth 304 on the rotating cylinder 306 are slidably connected to the first sliding groove 105. The rotating cylinder 306 is located between the four filter racks 101. The first sliding groove 105 inside the filter rack 101 communicates with the first sliding groove 105 inside the pressure filter housing 303. The first motor 208 is fixedly connected to the side surface of the pressure filter housing 303. The second filter plate 201 is rotatably connected to the inner wall of the pressure filter housing 303. The teeth 304 on the rotating cylinder 306 are engaged with the toothed disc 106. The friction between the inner wall of the second sliding groove 311 and the surface of the filter rack 101 is relatively large.

[0038] The main body mechanism 4 includes a support plate 401. A connecting plate 402 is fixedly connected to the top of the support plate 401. A hydraulic cylinder 403 is fixedly connected to the top of the connecting plate 402. A pressure plate 404 is slidably connected to the bottom of the hydraulic cylinder 403. Two spreaders 405 are arranged above the pressure filter housing 303. Two cylinders 406 are fixedly connected to the bottom of the support plate 401. A magnetic attraction telescopic rod 407 is slidably connected to the side of the cylinder 406 close to the pressure filter housing 303. Two conveyor belts 408 are arranged on the side surface of the main body housing 307. The pressure plate 404 is located below the connecting plate 402. The conveyor belts 408 are located below the support plate 401. The two spreaders 405 and the two connecting plates 402 are respectively located on the sides far away from each other of the four pressure filter chambers 305. The size of the pressure plate 404 is adapted to the size of the pressure filter chamber 305. The end of the magnetic attraction telescopic rod 407 away from the cylinder 406 is aligned with the fixing hole 111. The bottom of the second motor 301 is fixedly connected to the top of the support plate 401. The gear 302 is rotatably connected to the bottom of the support plate 401.

[0039] Adopting the above solution: By setting up the cooperation of structures such as the air inlet hole 202 and the cleaning hole 204, it is convenient to clean the interiors of the second filter hole 205 and the first filter hole 104. The high-pressure gas is injected into the ventilation hole 108 through the air outlet hole 310 by the pressure booster 309. Then, this high-pressure gas enters the cavity 203 through the air inlet hole 202 and is respectively injected into the second filter hole 205 through the cleaning hole 204, impacting the particles inside the second filter hole 205, so that part of the particles are flushed back into the pressure filtration chamber 305 from the interiors of the second filter hole 205 and the first filter hole 104 under the action of the high-pressure gas. During the rotation of the pressure filtration outer shell 303, the interior of the filter hole will be impacted by the high-pressure gas twice, which can clean the interior of the first filter hole 104, ensure that the gear disk 106 can rotate smoothly, and avoid the situation that the particulate matter in the sludge blocks the rotation of the gear disk 106 and affects the misalignment between the first filter hole 104 on the first filter plate 103 and the first filter hole 104 on the gear disk 106, reduce component wear, extend the service life of the device, and at the same time prevent the situation that local blockage affects the dehydration speed from occurring.

[0040] The working principle and usage process of the present invention: First, the pretreated sludge is respectively transported into the pressure filtration chamber 305 through two feeding devices 405. Then, the second motor 301 is started to make the gear 302 rotate. The rotation of the gear 302 drives the pressure filtration outer shell 303 to rotate on the main body outer shell 307 through the side teeth 304 of the pressure filtration outer shell 303. During this process, the free water in the sludge will, under the action of its own gravity, drain downward through the first filter holes 104 on the first filter plate 103. At this time, the free water can drain downward through the first filter holes 104 with larger sizes to achieve the effect of rapid drainage. This part of the free water successively passes through the first filter hole 104, the second filter hole 205, and the third filter hole 207, and then flows into the collection device below the main body outer shell 307 along with the filtration of several layers of filter meshes 308;

[0041] When the filter press housing 303 rotates 45°, a part of the free water in the sludge is discharged under the action of its own gravity, and the filter press housing 303 drives the toothed disk 106 inside the filter rack 101 to move to a position meshed with the teeth 304 on the rotating drum 306, and the vent holes 108 on the filter rack 101 communicate with the air outlet holes 310 on the pressure booster 309 corresponding to the set of teeth 304. At this time, high-pressure gas is injected into the vent holes 108 through the air outlet holes 310 by the pressure booster 309. Subsequently, the high-pressure gas enters the cavity 203 through the air inlet holes 202 and is then injected into the second filter holes 205 through the cleaning holes 204 respectively, impacting the particles inside the second filter holes 205, so that this part of the particles is flushed back into the filter press chamber 305 from the inside of the second filter holes 205 and the first filter holes 104 under the action of the high-pressure gas. Subsequently, the filter press housing 303 continues to rotate, and the teeth 304 on the rotating drum 306 also cause the toothed disk 106 to rotate along the clamping block 109 in the direction close to the clamping position. The rotation of the toothed disk 106 causes the first filter holes 104 on the toothed disk 106 to be misaligned with the first filter holes 104 on the first filter plate 103, reducing the aperture through which water can pass. During the rotation of the toothed disk 106, the clamping block 109 is squeezed to move away from the toothed disk 106, squeezing the spring 110 and causing the clamping block 109 to be clamped with the toothed disk 106. When the toothed disk 106 rotates one tooth, the clamping block 109 will be re-clamped with the toothed disk 106 under the action of the elastic force of the spring 110, preventing the toothed disk 106 from rotating in the reverse direction under the pressure of the sludge;

[0042] When the filter press housing 303 rotates 90°, one of the filter press chambers 305 filled with sludge moves below one pressing plate 404. When the filter press housing 303 rotates 180°, the two filter press chambers 305 filled with sludge will respectively move below the two pressing plates 404. During this process, the free water in the sludge is basically discharged from the inside of the filter press housing 303, and the sludge will become the thickest. And through the impact of high-pressure gas twice, it can avoid the situation that the particulate matter in the sludge blocks the rotation of the gear disk 106 and affects the misalignment between the first filter holes 104 on the first filter plate 103 and the first filter holes 104 on the gear disk 106. At the same time, the gear disk 106 will reduce the aperture size through which the filtrate can pass to the minimum under the action of the two groups of teeth 304. At this time, the pressing plate 404 is lowered by the hydraulic cylinder 403 to apply ultra-high pressure to the teeth 304 below it. Under the action of the ultra-high pressure, the solid particles in the sludge are continuously squeezed together, the voids in the sludge are continuously reduced, so that the water molecules are squeezed out from the tiny voids between the solid particles and discharged downward through the pores. At the same time, due to the strong squeezing action of the ultra-high pressure, the colloidal structure in the sludge is destroyed, and the water originally wrapped in the colloid is also released and discharged, so as to obtain a mud cake with a very high solid content. After reaching the set maximum pressure and lasting for a period of time, the water in the sludge will be further discharged, and the solid content of the mud cake will be further consolidated. By maintaining the pressure, it can ensure that the structure of the mud cake is more compact, reduce the rebound of water in the mud cake, and improve the stability of the dehydration effect;

[0043] Subsequently, after the pressing plate 404 is reset by the hydraulic cylinder 403, the magnetic telescopic rod 407 is moved by the air cylinder 406 in the direction close to the filter rack 101, so that the magnetic telescopic rod 407 is clamped with the fixing hole 111, and the magnetic telescopic rod 407 is attracted by the strong magnetic force. Then the magnetic telescopic rod 407 is reset by the air cylinder 406 and drives the filter rack 101 to be pulled out from the inside of the second chute 311. And the two first motors 208 corresponding to the second filter plates 201 in the two filter press housings 303 are started, so that the second filter plates 201 rotate upward inside the filter press housings 303. After forming an inclined plane, the second filter plates 201 are further rotated in a small amplitude reciprocally by the first motors 208 to apply vibration to the mud cake falling on the second filter plates 201, so that it is broken and discharged along the inclined plane from the inside of the second chute 311 onto the conveyor belt 408 and finally transported away. When filtering these two filter press chambers 305, sludge can be conveyed to the other two filter press chambers 305 synchronously by two feeding devices 405, and the above steps can be repeated, so that the device can perform the filtering work seamlessly in a cycle.

[0044] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Ultra-high pressure filter press for sludge dewatering, characterized by: It comprises a filtering mechanism (1), a cleaning mechanism (2) is arranged inside the filtering mechanism (1), the filtering mechanism (1) is arranged inside a filter pressing mechanism (3), and the filter pressing mechanism (3) is arranged inside a main body mechanism (4); The filtering mechanism (1) comprises a filtering frame (101), a groove (102) is provided on the side of the filtering frame (101), a first filter plate (103) is fixedly connected to the top of the filtering frame (101), a plurality of first filter holes (104) are evenly provided on the first filter plate (103), a first slide groove (105) is provided inside the filtering frame (101), a toothed disc (106) is rotatably connected inside the first slide groove (105), a plurality of first filter holes (104) are evenly provided on the toothed disc (106), and the toothed disc (106) ) is rotatably connected to the bottom of the first filter plate (103) through a protrusion (107), the top of the toothed disc (106) is fixedly connected with a protrusion (107), a vent (108) is provided on the side of the filter frame (101) away from the groove (102), two clamping blocks (109) are rotatably connected inside the first slide groove (105), the clamping blocks (109) are elastically connected to the inner wall of the first slide groove (105) through a spring (110), and a fixing hole (111) is provided on the side of the filter frame (101) close to the vent (108); The filter press mechanism (3) comprises a second motor (301), the bottom of the second motor (301) is rotatably connected to a gear (302), a filter press housing (303) is arranged on the side of the gear (302), a plurality of teeth (304) are fixedly connected to the side of the filter press housing (303), four filter press chambers (305) are evenly arranged on the top of the filter press housing (303), a rotating drum (306) is rotatably connected to the center of the filter press housing (303), the bottom of the filter press housing (303) is rotatably connected to the top of a main body housing (307), a plurality of filter screens (308) are arranged between the rotating drum (306) and the main body housing (307), four pressurizers (309) are fixedly connected to the side of the main body housing (307), air outlet holes (310) are arranged on the side of the four pressurizers (309) close to each other, and four second chutes (311) are evenly arranged on the side of the filter press housing (303).

2. The ultra-high pressure filter press for sludge dehydration according to claim 1, characterized in that: The fixing hole (111) is located above the vent hole (108); the first slide groove (105) is located between the fixing hole (111) and the groove (102); the clamping block (109) is located on a side of the first slide groove (105) away from the groove (102); the clamping block (109) has an "L" shape; and a side of the clamping block (109) away from the spring (110) is clamped with a side surface of the toothed disc (106).

3. The ultra-high pressure filter press for sludge dehydration according to claim 1, characterized in that: The cleaning mechanism (2) comprises a second filter plate (201), the second filter plate (201) is provided with an air inlet hole (202), the second filter plate (201) is provided with a cavity (203) inside, a plurality of second filter holes (205) are evenly provided on the top of the second filter plate (201), the inner wall of the second filter hole (205) is communicated with the cavity (203) through a cleaning hole (204), a rotating plate (206) is provided below the second filter plate (201), a plurality of third filter holes (207) are evenly provided on the rotating plate (206), and a first motor (208) is provided on the side of the rotating plate (206).

4. The ultra-high pressure filter press for sludge dehydration according to claim 3, characterized in that: The cleaning hole (204) is slanted downward on one side close to the second filter hole (205); the air inlet hole (202) is communicated with the cavity (203); the side of the rotating plate (206) is rotatably connected to the first motor (208) via a rotating shaft; the second filter hole (205) is conical in shape; and the size of the third filter hole (207) is adapted to the size of the smaller cross section of the second filter hole (205).

5. The ultra-high pressure filter press for sludge dehydration according to claim 3, characterized in that: The size of the third filter hole (207) is smaller than the size of the first filter hole (104); the size of the larger cross section of the second filter hole (205) matches the size of the first filter hole (104); the second filter plate (201) is fixedly connected to the bottom of the filter frame (101); and the air inlet (202) is communicated with the air vent (108).

6. The ultra-high pressure filter press for sludge dehydration according to claim 5, characterized in that: Four groups of teeth (304) are fixedly connected to the side of the rotating drum (306); the four groups of teeth (304) and the four second slide grooves (311) are staggered; the side of the filter press housing (303) is meshed with the gear (302) through the teeth (304); the four groups of teeth (304) are located above the filter screen (308); the air outlet (310) is located above the main housing (307); and the four pressurizers (309) are respectively located on one side of the four groups of teeth (304) close to the filter press housing (303).

7. The ultra-high pressure filter press for sludge dehydration according to claim 6, characterized in that: The size of the second slide groove (311) is matched with the size of the filter frame (101); the filter frame (101) and the second slide groove (311) are slidably connected; a first slide groove (105) is provided inside the filter press housing (303); four groups of teeth (304) on the rotary drum (306) are slidably connected to the first slide groove (105); the rotary drum (306) is located between the four filter frames (101); the first slide groove (105) inside the filter frame (101) is communicated with the first slide groove (105) inside the filter press housing (303); the first motor (208) is fixedly connected to the side surface of the filter press housing (303); the second filter plate (201) is rotatably connected to the inner wall of the filter press housing (303); and the teeth (304) on the rotary drum (306) are meshed with the toothed disc (106).

8. The ultra-high pressure filter press for sludge dehydration according to claim 7, characterized in that: The main body mechanism (4) comprises a support plate (401), the top of the support plate (401) is fixedly connected to a connecting plate (402), the top of the connecting plate (402) is fixedly connected to a hydraulic cylinder (403), the bottom of the hydraulic cylinder (403) is slidably connected to a pressing plate (404), two spreaders (405) are arranged above the filter press housing (303), the bottom of the support plate (401) is fixedly connected to two cylinders (406), a magnetic telescopic rod (407) is slidably connected to a side of the cylinder (406) close to the filter press housing (303), and two conveyor belts (408) are arranged on the side of the main body housing (307).

9. The ultra-high pressure filter press for sludge dehydration according to claim 8, characterized in that: The pressing plate (404) is located below the connecting plate (402), the conveyor belt (408) is located below the supporting plate (401), the two spreading devices (405) and the two connecting plates (402) are respectively located on the sides of the four filter press chambers (305) that are away from each other, the size of the pressing plate (404) is adapted to the size of the filter press chambers (305), one end of the magnetic telescopic rod (407) away from the cylinder (406) is aligned with the fixing hole (111), the bottom of the second motor (301) is fixedly connected to the top of the supporting plate (401), and the gear (302) is rotatably connected to the bottom of the supporting plate (401).

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