阅读说明：本技术 压吸式固液分离机 (Pressure-suction type solid-liquid separator ) 是由 韩文朴 于 2021-11-15 设计创作，主要内容包括：一种压吸式固液分离机,包括过滤机,在过滤机机架后部上方设置有加压机,加压机有设置在加压机驱动滚筒和加压机被动滚筒之间的加压机胶带,加压机胶带外周绕有加压机滤布,在处于加压机胶带上幅和下幅的间隙中装有加压装置,加压装置有若干可上下移动的压辊组,每个压辊组平行布置若干与加压机胶带长度方向垂直的压辊,另有压辊组下压装置,每个压辊组与压辊组下压装置相连接,过滤机胶带上幅下面对应压辊组的位置上设置有若干支撑托辊。本发明将负压吸水和加压挤水有机地融合在一台设备上,巧妙地解决了产品水分高的问题,解决了生产不能连续的问题,也消除了因高压带来的不安全问题。(A press-suction type solid-liquid separator comprises a filter, wherein a press is arranged above the rear part of a frame of the filter, the press is provided with a press adhesive tape arranged between a driving roller and a driven roller of the press, press filter cloth is wound on the periphery of the press adhesive tape, a press device is arranged in a gap between the upper width and the lower width of the press adhesive tape, the press device is provided with a plurality of press roller groups capable of moving up and down, each press roller group is provided with a plurality of press rollers vertical to the length direction of the press adhesive tape in parallel, the press roller groups are arranged in the press device, each press roller group is connected with the press roller group, and a plurality of support carrier rollers are arranged at positions corresponding to the press roller groups below the upper width of the press adhesive tape of the filter. The invention organically integrates negative pressure water absorption and pressure water squeezing on one device, skillfully solves the problem of high water content of the product, solves the problem that the production can not be continuous, and also eliminates the unsafe problem caused by high pressure.)

1. The utility model provides a pressure-suction type solid-liquid separator, includes the filter, and the filter has a frame, its characterized in that: an upper frame (32) is fixedly connected above the rear part of a frame of the filter, a pressurizer is arranged on the upper frame (32), the pressurizer is provided with a pressurizer driving roller (22) arranged on the upper frame (32) and a pressurizer driven roller (12) capable of moving back and forth, a bearing seat of the pressurizer driven roller (12) is connected with a spring tensioning mechanism (11), a pressurizer adhesive tape (15) is wound between the pressurizer driving roller (22) and the pressurizer driven roller (12), pressurizer filter cloth (14) is wound on the periphery of the pressurizer adhesive tape (15), the lower width of the pressurizer filter cloth (14) is tightly attached to the pressurizer adhesive tape (15), the upper width of the pressurizer filter cloth (14) is supported by a plurality of guide rollers (1), and the pressurizer driving roller (22) is connected with rotary power; a pressurizing device is arranged in a gap between the upper and lower webs of a rubber belt (15) of the pressurizing machine on an upper frame (32), the pressurizing device is provided with a plurality of vertically-guided press roll sets (17) which are arranged along the length direction of the rubber belt (15) of the pressurizing machine and can move up and down, a plurality of press rolls (28) which are vertical to the length direction of the rubber belt (15) of the pressurizing machine are arranged in parallel on each press roll set (17), the press roll sets are arranged on the pressing device, each press roll set (17) is connected with the press roll sets, and a plurality of supporting carrier rollers (5) are arranged at positions corresponding to the press roll sets (17) on the lower surface of the upper web of the rubber belt (3) of the filtering machine.

2. The pressure-suction type solid-liquid separator according to claim 1, characterized in that: the filter is a filter driving roller (7) arranged at the back of a frame and a filter driven roller (10) arranged at the front of the frame, a filter adhesive tape (3) is wound between the filter driving roller (7) and the filter driven roller (10), a vacuum box (4) with an upper opening is fixed on the frame, the vacuum box (4) is positioned in a space formed by the upper and lower webs of the filter adhesive tape (3) and the upper opening of the vacuum box (4) is attached to the bottom surface of the upper web of the filter adhesive tape (3), a drainage pipe is connected to the bottom of the vacuum box (4), a discharging roller (8) is arranged at the back of the filter driving roller (7) on the frame, filter cloth (2) surrounding the filter adhesive tape (3) and the discharging roller (8) is arranged on the periphery of the filter adhesive tape (3) and the upper web of the filter cloth (2) is attached to the upper web overlapping part of the filter adhesive tape (3) on the frame, the other parts of the filter cloth (2) of the filter are tensioned and supported by a discharging roller (8) and a guide roller (1) arranged on the frame, and a filter cloth flushing pipe (6) aiming at the filter cloth (2) of the filter is arranged on the frame.

3. The pressure-suction type solid-liquid separator according to claim 1, characterized in that: the pressing roller group pressing device is provided with a horizontal push rod (16) which is arranged above the pressing roller group (17) and can move on an upper frame (32) through a guide device, a hydraulic cylinder (13) is connected between one end of the horizontal push rod (16) and the upper frame (32), and a wedge-shaped pressing device is arranged between the horizontal push rod (16) and each pressing roller group (17).

4. The pressure-suction type solid-liquid separator according to claim 3, characterized in that: the wedge-shaped pressing device is provided with inclined push rods (18) corresponding to the number of the pressing roller groups (17), the inclined push rods (18) are strip-shaped bodies provided with roller grooves (25) along the length direction, one ends of the inclined push rods (18) are hinged with lifting noses fixed on the bottom of the horizontal push rod (16), the other ends of the inclined push rods (18) are hinged with adjusting screws (26), threaded rod parts of the adjusting screws (26) penetrate through strip-shaped through holes in the horizontal push rod (16), adjusting nuts are screwed on the two sides, located on the upper surface and the lower surface of the horizontal push rod (16), of the threaded rod parts of the adjusting screws (26), and the inclined push rods (18) are inclined relative to the horizontal direction; a roller seat (29) is fixed on the top surface of the press roll set (17), a roller (30) is supported on the roller seat (29) through a wheel shaft, and the roller (30) is positioned in a roller groove (25) of the inclined push rod (18) and the diameter of the roller (30) is matched with the width of the roller groove (25).

5. The pressure-suction type solid-liquid separator according to claim 1, characterized in that: the compression roller group (17) is provided with a rectangular compression roller group frame (27), a plurality of compression rollers (28) are arranged at the bottom of the compression roller group frame (27) side by side, the compression rollers (28) are supported on two side walls of the compression roller group frame (27) through compression roller shafts, and the circular arc surface of the bottom part of each compression roller (28) is lower than the bottom surface of the periphery of the compression roller group frame (27).

6. The pressure-suction type solid-liquid separator according to claim 5, characterized in that: and the inner side and the outer side of the compression roller set frame (27) are provided with spaced vertical positioning grooves (31) which are matched with vertical positioning columns (33) on an upper frame (32).

7. The pressure-suction type solid-liquid separator according to claim 2, characterized in that: the end parts of the central shafts of the filter driving roller (7), the discharging roller (8) and the pressurizer driving roller (22) are respectively fixed with a chain wheel, in addition, a driving device (20) of the chain wheel is fixed on an output shaft, a power chain (21) is hung among the chain wheels on the driving device (20), the filter driving roller (7) and the pressurizer driving roller (22), and a discharging chain (23) is hung among the chain wheels on the filter driving roller (7) and the discharging roller (8).

8. The pressure-suction type solid-liquid separator according to claim 7, characterized in that: the diameters of the filter driving roller (7), the pressurizer driving roller (22) and the discharging roller (8) are the same, and the diameters and the tooth numbers of chain wheels connected among the filter driving roller, the pressurizer driving roller and the discharging roller are the same.

9. The pressure-suction type solid-liquid separator according to claim 7, characterized in that: a filter cloth flushing pipe (19) of the pressurizer is arranged on the outer side of the filter cloth (14) of the pressurizer.

Technical Field

The invention relates to a device for dehydrating slurry to realize solid-liquid separation, in particular to a pressure-suction type solid-liquid separator which can continuously obtain negative pressure water absorption and positive pressure water squeezing to realize rapid dehydration in the process of uninterrupted transportation of the slurry.

Background

At present, the known slurry dehydration modes mainly include four modes, one mode is that slurry is conveyed by a pump to pressurize a cavity formed between filter plates or further pressurize a membrane filter plate to realize dehydration, the other mode is that dehydration is realized by negative pressure water absorption, the third mode is that dehydration is realized by extruding a filter belt on a roller, and the fourth mode is that the material is loosened by vibration and then is dehydrated by gravity. The main types of the commonly used slurry solid-liquid separation equipment are frame filter presses, diaphragm filter presses, high-pressure filter presses, belt filter presses, disc filter presses, high-frequency sieves and the like. The existing solid-liquid separation equipment on the market has a single dehydration mode, and the product has high water content although the equipment can continuously run by utilizing a negative pressure water absorption mode for dehydration; the dehydration by the pressurized wringing mode needs the slurry to be dehydrated in a pause state and cannot be continuously operated, the product moisture of most types of equipment is high, although the novel high-pressure equipment can reduce the product moisture, the dehydration can be realized only by applying high air pressure or high hydraulic pressure to the diaphragm filter plate, and the dehydration is unsafe due to high pressure. In addition, the existing solid-liquid separation equipment in the market has few controllable means in the aspect of controlling the moisture and the treatment capacity of products, so that equipment capable of solving the defects is urgently needed in the market.

Disclosure of Invention

The invention aims to provide a pressure-suction type solid-liquid separator, which overcomes the defects of the existing solid-liquid separation equipment adopting a single dehydration mode.

The object of the invention is achieved in the following way: the pressure-suction type solid-liquid separator comprises a filter, wherein the filter is provided with a rack, an upper rack is fixedly connected above a driving end rack of the filter, a pressure machine is arranged on the upper rack and is provided with a pressure machine driving roller and a pressure machine driven roller capable of moving back and forth, a bearing seat of the pressure machine driven roller is connected with a spring tensioning mechanism, a pressure machine adhesive tape is wound between the pressure machine driving roller and the pressure machine driven roller, the pressure machine driving roller and the pressure machine driven roller are pulled backwards through the spring tensioning mechanism to be tensioned, and when the pressure machine moves up and down, the pressure machine adhesive tape is always in a proper tensioning state under the action of a spring of the spring tensioning device. The periphery of the rubber belt of the pressurizer is wound with filter cloth of the pressurizer, the lower breadth of the filter cloth of the pressurizer is tightly attached to the rubber belt of the pressurizer, the upper breadth of the filter cloth of the pressurizer is supported by a plurality of guide rollers, and a driving roller of the pressurizer is connected with rotary power; a pressurizing device is arranged in a gap between the upper and lower widths of the rubber belt of the pressurizing machine on the upper frame, the pressurizing device is provided with a plurality of vertically-guided press roll sets which are arranged along the length direction of the rubber belt of the pressurizing machine and can move up and down, a plurality of press rolls which are vertical to the length direction of the rubber belt of the pressurizing machine are arranged in parallel in each press roll set, the press rolls are arranged in parallel in the other press roll set, each press roll set is connected with the press roll sets, and a plurality of supporting carrier rollers are arranged at positions, corresponding to the press roll sets, below the upper width of the rubber belt of the filtering machine. Negative pressure water absorption of a filter, [1] water extrusion under pressure, wherein the negative pressure water absorption and the water extrusion under pressure are organically integrated on one device, slurry absorbs water under negative pressure to form a cake, and the cake is subjected to the simultaneous action of the negative pressure water absorption and the water extrusion under pressure to realize deep dehydration. In the operation process of the pressurizing conveyor, a pressurizing device applies pressure to the press roll set, the press rolls of the press roll set press the rubber belt of the pressurizing conveyor and the filter cloth of the pressurizing conveyor downwards to form a clamping force with the supporting force of the supporting carrier roller of the filter, the material cake wrapped between the pressurizing conveyor and the filter is squeezed, and the pressurizing conveyor and the filter synchronously operate.

The filter is a filter driving roller arranged at the back and a filter driven roller arranged at the front on the frame, a filter adhesive tape is wound between the filter driving roller and the filter driven roller, a vacuum box with an upper opening is fixed on the frame, the vacuum box is positioned in a space formed by the upper breadth and the lower breadth of the filter adhesive tape, the upper opening of the vacuum box is attached to the bottom surface of the upper breadth of the filter adhesive tape, the bottom of the vacuum box is connected with a drainage pipeline, a discharging roller is arranged on the frame at the rear part of the filter driving roller, the periphery of the filter rubber belt and the discharge roller is provided with filter cloth surrounding the filter rubber belt and the discharge roller, the overlapping part of the upper breadth of the filter cloth and the upper breadth of the filter rubber belt is attached to the upper breadth, other parts of the filter cloth are tensioned and supported by the discharge roller and a guide roller arranged on the frame, and the frame is provided with a filter cloth flushing pipe aiming at the filter cloth. The filter part mainly realizes the function of negative pressure water absorption, a drainage pipeline at the bottom of the vacuum box is connected with a gas-water separator, the gas-water separator is connected with a vacuum pump through a pipeline, and the vacuum box is sucked by the vacuum pump to form negative pressure so as to realize the purpose of negative pressure water absorption of the filter. The filter and its auxiliary facilities belong to the known equipment.

The pressing roller group pressing device is provided with a horizontal push rod which is arranged above the pressing roller group and can move on the upper frame through a guide device, a hydraulic cylinder is connected between one end of the horizontal push rod and the upper frame, and a wedge-shaped pressing device is arranged between the horizontal push rod and each pressing roller group. The hydraulic cylinder drives the horizontal push rod to move horizontally, and the horizontal movement of the horizontal push rod is converted into up-and-down movement through the wedge-shaped pressing device, so that the compression roller group is driven to move up and down.

The wedge-shaped pressing device is provided with inclined push rods corresponding to the number of the pressing roller groups, the inclined push rods are strip-shaped bodies provided with roller grooves along the length direction, one ends of the inclined push rods are hinged with lifting noses fixed on the bottom of the horizontal push rod, the other ends of the inclined push rods are hinged with adjusting screws, threaded rod parts of the adjusting screws penetrate through strip-shaped through holes in the horizontal push rod, adjusting nuts are screwed on two sides, located on the upper surface and the lower surface of the horizontal push rod, of the threaded rod parts of the adjusting screws, and the inclined push rods are inclined relative to the horizontal direction; and a roller seat is fixed on the top surface of the press roll group, a roller is supported on the roller seat through a wheel shaft, and the roller is positioned in a roller groove of the inclined push rod, and the diameter of the roller is matched with the width of the roller groove. The height of the adjusting screw rod relative to the horizontal push rod can be adjusted, so that the inclination of the inclined push rod can be adjusted, the expected initial height of each compression roller group can be adjusted by adjusting the height of the adjusting screw rod of the wedge-shaped pressing device corresponding to each compression roller group, and the adjusting screw rod is locked and fixed through the adjusting nut on the adjusting screw rod after the position of the adjusting screw rod is well set.

The compression roller group is provided with a rectangular compression roller group frame, a plurality of compression rollers are arranged at the bottom of the compression roller group frame side by side, the compression rollers are supported on two side walls of the compression roller group frame through compression roller shafts, and the circular arc surface of the bottom part of each compression roller is lower than the bottom surface of the periphery of the compression roller group frame.

And the inner side edge and the outer side edge of the compression roller group frame are provided with vertical positioning grooves which are arranged at intervals and are matched with the vertical positioning columns on the upper frame. The vertical movement of the compression roller group frame is guided through the matching of the positioning columns and the positioning grooves. The bearing seat can be fixed on the side edge of the compression roller group frame, the axial sliding bearing is fixed in the bearing seat, the vertical guide rod is fixed on the upper frame, and the axial sliding bearing is sleeved on the guide rod to realize the guide of the vertical movement of the compression roller group frame.

The end parts of central shafts of the filter driving roller, the discharging roller and the pressurizer driving roller are respectively fixed with a chain wheel, a driving device with the chain wheel fixed on an output shaft is additionally arranged, a power chain is hung among the chain wheels on the driving device, the filter driving roller and the pressurizer driving roller, and a discharging chain is hung among the chain wheels on the filter driving roller and the discharging roller.

The diameters of the filter driving roller, the pressurizer driving roller and the discharging roller are the same, and the diameters and the tooth numbers of chain wheels connected among the filter driving roller, the pressurizer driving roller and the discharging roller are the same, so that the synchronous operation of the three rollers is realized.

The outer side of the filter cloth of the pressurizer is provided with a filter cloth flushing pipe of the pressurizer.

Solid-liquid separation process: the slurry added with the filter aid is evenly and evenly spread on the filter cloth of the filter and enters a negative pressure water absorption area of the filter. Filter cloth of the filter is covered on a filter belt with a groove and synchronously runs with the filter belt, the middle of the filter belt is provided with a hole which is connected with a vacuum box, the vacuum box is connected with a vacuum pump through a gas-water separator, the negative pressure generated by the vacuum pump sucks water in slurry, and the negative pressure water suction runs through the whole dehydration process of the equipment; the slurry moves along with the filter cloth of the filter, after negative pressure water absorption is carried out for a period of time, a formed material cake enters the lower part of the pressurizing machine, is wrapped between the filter cloth of the filter and the filter cloth of the pressurizing machine and enters a pressure absorption dehydration area, a plurality of groups of press roll sets in the pressure absorption dehydration area press the adhesive tape of the pressurizing machine downwards, and clamping force is formed under the support of a plurality of support rollers of the filter, so that the material cake wrapped between the filter cloth of the filter and the filter cloth of the pressurizing machine, namely the material cake between the adhesive tape of the pressurizing machine and the adhesive tape of the filter is rapidly extruded and dehydrated by a large margin, and extruded water is absorbed by a vacuum pump.

The invention organically integrates negative pressure water absorption and pressure water squeezing on one device, skillfully solves the problem of high water content of the product, solves the problem that the production can not be continuous, and also eliminates the unsafe problem caused by high pressure. The invention can adjust the thickness of the material cake to improve the dehydration effect and the treatment capacity by adjusting the size of the feeding amount in the continuous operation process of the equipment, adjust the dehydration time and the treatment capacity of the material cake by adjusting the speed of the conveyor, and realize further dehydration by adjusting the pressure and the negative pressure of the pressurizer, thereby ensuring that the water content and the treatment capacity of the product meet different requirements. The dehydration is carried out by utilizing a pressurizing and water squeezing mode, the remote control cannot be carried out in the actual production, and the manual operation is necessary. The invention can realize remote control without manual operation. Can be widely used for dehydration treatment in the industries of domestic sewage, slurry, coal preparation plants, food processing, chemical industry, metal mines and the like.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic view of the drum drive.

Fig. 3 is a schematic view of the connection of the diagonal push rod and the horizontal push rod.

Fig. 4 is a front view of the nip roller set.

Fig. 5 is a top view of a nip roll set.

Fig. 6 is a schematic view of the structure of the pressurizing means.

Fig. 7 is a schematic view of the structure of the press.

FIG. 8 is a schematic view of the guide portion of the frame of the press roll stack.

In the figure: 1-a guide roll; 2-filter cloth of the filter; 3-filter adhesive tape; 4-vacuum box; 5-supporting the carrier roller; 6-filter cloth flushing pipe; 7-a filter driving roller; 8-a discharge roller; 9-filter aid adding and stirring mechanism; 10-passive roller of filter; 11-a spring tensioning mechanism; 12-a passive roller of a press; 13-a hydraulic cylinder; 14-press filter cloth; 15-press tape; 16-a horizontal push rod; 17-a press roll set; 18-a diagonal push rod; 19-a filter cloth flushing pipe of a pressurizer; 20-a drive device; 21-a power chain; 22-a press driving roller; 23-a discharge chain; 24-hanging a nose; 25-roller groove; 26-adjusting screw; 27-a press roll stack frame; 28-a press roll; 29-roller seat; 30-a roller; 31-a positioning groove; 32-putting on shelves; 33-positioning columns.

Detailed Description

Referring to fig. 1-8, the press-suction type solid-liquid separator comprises a filter, the filter has a frame, for convenience of description, a feeding end is set as front, a discharging end is set as rear, a filter driving roller 7 arranged at the rear and a filter driven roller 10 arranged at the front are arranged on the frame, a filter adhesive tape 3 is wound between the filter driving roller 7 and the filter driven roller 10, a vacuum box 4 with an upper opening is fixed on the frame, the vacuum box 4 is positioned in a space formed by the upper and lower breadth of the filter adhesive tape 3, the upper opening of the vacuum box 4 is attached to the bottom surface of the upper breadth of the filter adhesive tape 3, the bottom of the vacuum box 4 is connected with a drainage pipe, the drainage pipe is connected with a vacuum pump after being externally connected with an air-water separator, a discharging roller 8 is arranged at the rear part of the filter driving roller 7 on the frame, filter adhesive tapes 3 and filter cloth 2 surrounding the discharging roller 8 are arranged on the periphery of the filter adhesive tape 3 and the discharging roller 8, the overlapping part of the upper breadth of the filter cloth 2 of the filter and the upper breadth of the adhesive tape 3 of the filter is attached on the upper breadth, other parts of the filter cloth 2 of the filter are tensioned and supported by a discharging roller 8 and a guide roller 1 arranged on a frame, a filter cloth flushing pipe 6 aiming at the filter cloth 2 of the filter is arranged on the frame, and a filter aid adding and stirring mechanism 9 is arranged above the front end of the adhesive tape 3 of the filter; an upper frame 32 is fixedly connected above the rear part of a frame of the filter, a pressurizing machine is arranged on the upper frame 32, the pressurizing machine is provided with a pressurizing machine driving roller 22 arranged on the upper frame 32 and a pressurizing machine driven roller 12 capable of moving back and forth, a bearing seat of a tail roller 12 of the pressurizing machine is connected with a spring tensioning mechanism 11, the spring tensioning mechanism 11 can be simply understood as a tension spring arranged between the bearing seat of the pressurizing machine driven roller 12 and the upper frame 32, a pressurizing machine adhesive tape 15 is wound between the pressurizing machine driving roller 22 and the pressurizing machine driven roller 12, a pressurizing machine filter cloth 14 is wound on the periphery of the pressurizing machine adhesive tape 15, the lower width of the pressurizing machine filter cloth 14 is tightly attached to the pressurizing machine adhesive tape 15, the upper width of the pressurizing machine filter cloth 14 is supported by a plurality of guide rollers 1, a pressurizing machine filter cloth flushing pipe 19 is arranged on the outer side of the pressurizing machine filter cloth 14, the pressurizing machine adhesive tape 15 and the filter tape 3 are provided with a plurality of through holes, and grooves are arranged on the surfaces; a pressurizing device is arranged in a gap between the upper and lower widths of the rubber belt 15 of the pressurizing machine on the upper frame 32, the pressurizing device is provided with a plurality of vertically guided and vertically movable press roll groups 17 which are arranged along the length direction of the rubber belt 15 of the pressurizing machine, a plurality of press rolls 28 which are vertical to the length direction of the rubber belt 15 of the pressurizing machine are arranged in parallel on each press roll group 17, the other press roll group lower pressing device is provided with a plurality of support carrier rollers 5, each press roll group 17 is connected with the press roll group lower pressing device, and a plurality of support carrier rollers 5 are arranged at the positions, corresponding to the press roll groups 17, on the lower surface of the upper width of the rubber belt 3 of the filtering machine. The filter driving roller 7, the discharging roller 8 and the pressurizer driving roller 22 are respectively fixed with a chain wheel at the end part of a central shaft, in addition, a driving device 20 with a chain wheel fixed on an output shaft is arranged, a power chain 21 is hung among the chain wheels on the driving device 20, the filter driving roller 7 and the pressurizer driving roller 22, in order to realize that a wrap angle for reliably transmitting power is arranged between the power chain 21 and the chain wheel, an idle gear can be added at a proper position to change the direction of the power chain 21, a discharging chain 23 is hung among the chain wheels on the filter driving roller 22 and the discharging roller 8, the diameters of the filter driving roller 7, the pressurizer driving roller 22 and the discharging roller 8 are the same, and the diameters and the tooth numbers of the chain wheels connected among the three are the same, so as to realize synchronous operation. The driving device 20 may be an electric motor, a hydraulic motor, or the like.

The roller group pressing device is provided with a horizontal push rod 16 which is arranged above the roller group 17 and is movable by a guide device on an upper frame 32, a hydraulic cylinder 13 is connected between one end of the horizontal push rod 16 and the upper frame 32, and a wedge-shaped pressing device is arranged between the horizontal push rod 16 and each roller group 17. The wedge-shaped pressing device is provided with inclined push rods 18 corresponding to the number of the pressing roller groups 17, the inclined push rods 18 are strip-shaped bodies provided with roller grooves 25 along the length direction, one ends of the inclined push rods 18 are hinged with hanging noses 24 fixed on the bottom of the horizontal push rod 16, the other ends of the inclined push rods 18 are hinged with adjusting screws 26, threaded rod parts of the adjusting screws 26 penetrate through strip-shaped through holes in the horizontal push rod 16, adjusting nuts are screwed on the two sides, located on the upper surface and the lower surface of the horizontal push rod 16, of the threaded rod parts of the adjusting screws 26, and the inclined push rods 18 are inclined relative to the horizontal direction; a roller seat 29 is fixed on the top surface of the press roll set 17, a roller 30 is supported on the roller seat 29 through a wheel shaft, and the roller 30 is positioned in the roller groove 25 of the inclined push rod 18 and has a diameter matched with the width of the roller groove 25. The press roller group 17 has a rectangular press roller group frame 27, a plurality of press rollers 28 are arranged side by side at the bottom of the press roller group frame 27, the press rollers 28 are supported on both side walls of the press roller group frame 27 through press roller shafts, and the circular arc surface of the bottom portion of the press roller 28 is lower than the bottom surface of the periphery of the press roller group frame 27. The inner side and the outer side of the compression roller set frame 27 are provided with alternate vertical positioning grooves 31, vertical positioning columns 33 are fixed on the upper frame 32, and the positioning columns 33 are correspondingly clamped in the positioning grooves 31 to guide the compression roller set frame 27, as shown in fig. 8; a U-shaped clip is fixed on a cross beam of the upper frame 32, and the horizontal push rod 16 is guided by the U-shaped clip and can move back and forth relative to the U-shaped clip, as shown in fig. 7. The horizontal guide of the horizontal pushing rod 16 can also adopt other common guide rail forms, such as a V-shaped guide linear track arranged between the horizontal pushing rod 16 and the upper frame 32.

During working, slurry added with the filter aid by the filter aid adding and stirring mechanism 9 is flatly spread on the filter cloth 2 of the filter and enters a negative pressure water absorption area of the filter; the filter cloth 2 and the filter rubber belt 3 run synchronously, the middle of the filter rubber belt 3 is provided with a hole which is connected with a vacuum box 4, the vacuum box 4 is connected with a vacuum pump through a gas-water separator, the negative pressure generated by the vacuum pump sucks away the water in the slurry, and the negative pressure water suction runs through the whole dehydration process of the equipment; the slurry moves along with the filter cloth 2 of the filter to form a cake, the cake enters the lower part of the press and is wrapped between the filter cloth 2 of the filter and the filter cloth 14 of the press to enter a pressure and suction dehydration area, a plurality of groups of press roller groups 17 press the adhesive tape 15 of the press downwards to form clamping force under the action of the support carrier roller 5 of the filter, so that the cake is extruded and dehydrated rapidly and greatly, and simultaneously, the cake and the negative pressure water absorption are cooperated, the extruded and absorbed water is absorbed by the vacuum pump, the negative pressure water absorption and the pressure water absorption are organically integrated on one device, and the problems of high water content of products, incapability of continuous production and the like are solved.