A dehydration filter press equipment for harmless treatment of sludge

Abstract

The present invention relates to the technical field of sludge treatment, and specifically to a dehydration and filtration equipment for harmless treatment of sludge, comprising two fixed plates, an upper liquid collecting tank and a lower liquid collecting tank located between the two fixed plates, an annular upper filter belt and a lower filter belt with the same width are arranged above the upper liquid collecting tank and below the lower liquid collecting tank, which overlap between the upper liquid collecting tank and the lower liquid collecting tank for filtering the sludge, and two wave-guided inner drive rollers are arranged in the overlapping area, a vacuum generator is arranged on the right side of each of the two inner drive rollers, and an auxiliary belt pressure roller is arranged on the inner side of the upper filter belt of the vacuum generator. The dehydration and filtration effect of the equipment of the present invention is better, and the stability during vacuum filtration is improved by cooperating with the auxiliary belt pressure roller and the vacuum generator. The two groups of auxiliary belt pressure rollers can be linked with the mud guide assembly and the cleaning brush assembly respectively during operation, so as to achieve the purpose of synchronous and efficient operation, with a high degree of integration, convenient use, and easy maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, in particular to a dehydration filter press device for harmless treatment of sludge. Background Art

[0002] The harmless disposal of municipal sludge refers to the harmless and stable disposal of sludge generated in sewage treatment through drying and incineration, solidification and landfill, building material utilization, land utilization, etc. After meeting the relevant national standards, it can be used for land utilization, landscaping, incineration, building materials, sanitary landfill, etc. Before the above harmless treatment, the sludge usually needs to be dehydrated and filtered, which requires the use of special equipment for dehydration and filtration.

[0003] Among the currently commonly used dehydration and filtration equipment, the most common are baffle filter presses and belt filter presses. However, the traditional baffle filter presses have no treatment effect on the sludge itself, and have high filter cloth consumption, easy inlet clogging, need for frequent cleaning, and low degree of automation. Belt filter presses also have some disadvantages, such as low dehydration rate, need for real-time cleaning, and waste of water resources.

[0004] The invention patent with the patent publication number CN115536235A discloses a belt filter press for sludge dewatering with backwashing function and a method of use: comprising a belt filter press body, the upper and lower sides of the rear end of the belt filter press body are rotatably connected to drive rollers through pin shafts, the rotating ring is rotatably connected to a cleaning brush, the right side of the rear end of the belt filter press body is slidably connected to a reciprocating rod, the middle part of the upper end face of the reciprocating rod is fixedly connected to a second sliding column, the second sliding column is slidably connected to a second vibration block, the left end face of the second vibration block is fixedly connected to a first sliding column, the first sliding column is slidably connected to a first vibration block, the left end face of the first vibration block is fixedly connected to a feed box, and a valve is provided in the middle part of the lower side of the front end of the belt filter press body. It can effectively solve the problems in the prior art that sludge is easily accumulated at a certain place of the filter belt, affecting the filtration efficiency, and the cleaning effect of the filter belt is poor.

[0005] However, this patent also does not solve the problem that the belt filter press has poor dehydration effect during the filtration process and requires frequent cleaning. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a dehydration filter press device for harmless treatment of sludge, comprising two fixed plates located at the front and rear sides, an upper liquid collecting tank and a lower liquid collecting tank located between the two fixed plates, an upper filter belt rotating around the upper liquid collecting tank, and a lower filter belt rotating around the lower liquid collecting tank;

[0007] The upper filter belt and the lower filter belt are both annular and have the same width. The upper filter belt and the lower filter belt overlap between the upper liquid collecting tank and the lower liquid collecting tank for filtering the sludge. A mud feeding plate is provided in the overlapping area on the left side of the upper filter belt and the lower filter belt, and a mud guide groove is provided at the lower right side of the lower filter belt.

[0008] An outer driving roller is provided at both ends of the upper filter belt and the lower filter belt, which is used to drive the upper filter belt to rotate counterclockwise and drive the lower filter belt to rotate clockwise. Two inner driving rollers for guiding the upper filter belt and the lower filter belt in a wave-like manner are provided in the overlapping area of ​​the upper filter belt and the lower filter belt, and the two inner driving rollers are both located on the inner side of the upper filter belt. A vacuum generator is provided on the right side of each of the two inner driving rollers, and the vacuum generator is located on the inner side of the lower filter belt. An auxiliary belt pressure roller is provided on the inner side of the upper filter belt corresponding to the position of the vacuum generator.

[0009] A mud inlet pipe is provided on the right side above the upper liquid collecting tank, and a plurality of mud guide assemblies are provided above the upper liquid collecting tank on the left side of the mud inlet pipe. The mud guide assemblies include 4 to 8 mud guide blocks arranged side by side. A brush cleaning assembly is provided on the right end above the upper liquid collecting tank, located on the right side of the mud inlet pipe, and the brush cleaning assembly includes 4 to 8 cleaning brushes arranged side by side.

[0010] Furthermore, a mud guide plate is provided below the mud inlet pipe outlet, the mud guide plate is inclined downward to the right side, the upper left side of the mud guide plate is fixedly connected to the mud inlet pipe through a connecting block, and a mud guide pump is provided at the end of the mud inlet pipe.

[0011] Note: The setting of the mud guide plate can make the sludge dispersed more evenly when entering the upper filter belt.

[0012] Furthermore, there are two mud guide assemblies, and each mud guide block on the mud guide assembly is fixedly connected by a first connecting rod. The mud guide block is an inverted triangle, and the bottom of the mud guide block is in contact with the upper filter belt. Each cleaning brush on the cleaning brush assembly is fixedly connected by a second connecting rod.

[0013] Note: The mud guide assembly can be used to further disperse the sludge, and the cleaning assembly can be used to clean the upper filter belt to ensure that the filtering effect is always good.

[0014] Furthermore, the front ends of the first connecting rod and the second connecting rod are fixedly connected to an adjusting block, and an annular adjusting groove is provided on the inner wall of the bottom of the adjusting block, and the depth of the adjusting groove increases from shallow to deep and then to shallow, and the auxiliary belt pressure roller includes a transmission belt and two pulleys located inside the transmission belt, one of the pulleys is driven to rotate by a belt motor, and the belt motor is fixedly arranged on the front side wall of the fixed plate, and an adjusting rod passing through the fixed plate is provided at the front center of the other pulley, and an L-shaped extension rod is provided at the end of the adjusting rod, and the front end of the extension rod extends into the adjusting groove and rotates in the adjusting groove as the adjusting rod rotates.

[0015] Description: By setting the adjustment block and its related components, the pulley can synchronously drive the mud guide component and the brush cleaning component to work during the rotation process, thereby improving work efficiency.

[0016] Preferably, the front ends of the two first connecting rods are fixedly connected with a connecting plate, the middle part of the connecting plate is fixedly connected to the top of the adjusting block, the rear ends of the first connecting rod and the second connecting rod are each provided with a return spring, the rear ends of the return springs are provided with a fixed block, and the bottom of the fixed block is fixedly connected to the top of the fixed plate located on the rear side.

[0017] Description: The setting of the reset spring can make the first connecting rod or the second connecting rod reset in time, thereby realizing reciprocating motion, so as to achieve the purpose of dispersing sludge and cleaning the upper filter belt.

[0018] Furthermore, each of the outer drive rollers and each of the inner drive rollers is driven to rotate respectively by a drive motor, and the drive motor is fixedly arranged on the fixed plate, and the output end of each drive motor passes through the fixed plate and is connected to the center of each outer drive roller and each inner drive roller one by one.

[0019] Description: The outer drive roller and the inner drive roller work together to achieve stable operation of the upper filter belt and the lower filter belt.

[0020] Furthermore, the front side wall of the upper liquid collecting tank is provided with 3 to 5 first flow guide pipes, the front side wall of the lower liquid collecting tank is provided with 3 to 5 second flow guide pipes, the front side of the fixed plate located on the front side is provided with a third flow guide pipe, and the bottoms of the first flow guide pipe and the second flow guide pipe are both connected to the third flow guide pipe.

[0021] Note: The water filtered out from the upper and lower liquid collecting tanks can be promptly discharged through the first and second guide pipes.

[0022] Furthermore, the vacuum generator includes a shell, a plurality of upwardly protruding air outlet holes are provided at the contact point between the top surface of the shell and the lower filter belt, a vacuum pump is provided on the top wall on one side of the interior of the shell, a dustproof net is provided below the vacuum pump, a partition is provided in the middle of the shell, a check valve is provided in the middle of the partition, and a medicine dispenser is provided below the partition.

[0023] Description: The vacuum generator can form a vacuum zone under the lower filter belt, so as to achieve the purpose of improving the dehydration of filter pressing by combining filter pressing with vacuum.

[0024] Furthermore, the right side of the mud feeding plate is tilted downward and has a structure that is wide at the top and narrow at the bottom. The bottom width of the mud feeding plate is 3 / 4 to 4 / 5 of the width of the upper filter belt and the lower filter belt. The two sides of the top of the mud feeding plate are respectively fixedly connected to the two fixed plates, and 3 to 6 cleaning heads are evenly spaced at the bottom of the mud feeding plate.

[0025] Note: By adjusting the size of the mud feeding plate, the sludge can be kept in the middle position between the upper filter belt and the lower filter belt to avoid sludge leakage.

[0026] Furthermore, two scraper plates are provided at the overlapping and separating portion on the right side of the upper filter belt and the lower filter belt. The upper scraper plate is inclined toward the upper right and contacts the upper filter belt, and the lower scraper plate is inclined toward the lower right and contacts the lower filter belt. The two scraper plates are fixedly connected to the two fixed plates on both sides respectively, and the mud guide groove is located below the two scraper plates.

[0027] Description: The sludge cake after dehydration and filtration can be scraped off by the scraper and dropped into the sludge guide trough for collection and transportation.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The dehydration and filtration equipment for harmless treatment of sludge of the present invention combines a belt filter press with a vacuum negative pressure effect to achieve a better dehydration and filtration effect, and cooperates with an auxiliary belt pressure roller and a vacuum generator to improve the stability during vacuum filtration. The two sets of auxiliary belt pressure rollers can be linked with the mud guide component and the cleaning brush component respectively during operation, so as to achieve the purpose of synchronous and efficient operation, with a high degree of integration, easy use and maintenance.

[0030] (2) The dehydration filter press equipment for harmless treatment of sludge of the present invention replaces the traditional water washing cleaning by providing a cleaning brush component, and only the lower filter belt is washed with water, thus saving half of the water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0032] Figure 2 It is a top view of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0033] Figure 3 It is a schematic diagram of the internal structure of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0034] Figure 4 It is a schematic diagram of the left side structure of the interior of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of a mud guide assembly of a dehydration filter press for harmless treatment of sludge according to the present invention;

[0036] Figure 6 It is a schematic structural diagram of a cleaning component of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0037] Figure 7 This is a schematic diagram of the structure of an adjustment block of a dehydration filter press for harmless treatment of sludge according to the present invention;

[0038] Figure 8 It is a schematic diagram of the connection structure of the regulating tank and the extension rod of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0039] Fig. 9 It is a schematic diagram of the internal structure of a vacuum generator of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0040] Fig.10 It is a left side view of a dehydration filter press device for harmless treatment of sludge according to the present invention;

[0041] Fig.11 This is a schematic diagram of the top air outlet structure of a vacuum generator of a dehydration filter press for harmless sludge treatment of the present invention;

[0042] Fig.12 The present invention is a schematic diagram of the internal depth structure of an adjustment tank of a dehydration filter press for harmless treatment of sludge.

[0043] Among them, 1-fixed plate, 11-mud delivery plate, 12-cleaning head, 13-mud scraper, 14-mud guide groove, 2-upper liquid collecting groove, 21-upper filter belt, 22-mud inlet pipe, 23-mud guide plate, 24-mud guide pump, 25-first guide pipe, 26-connecting block, 3-lower liquid collecting groove, 31-lower filter belt, 32-second guide pipe, 33-third guide pipe, 4-external drive roller, 41-drive motor, 5-inner drive roller, 6-vacuum generator, 61-shell, 62-outlet Air hole, 63-vacuum pump, 64-dustproof net, 65-partition, 66-check valve, 67-medicine dispenser, 7-auxiliary belt pressure roller, 71-transmission belt, 72-pulley, 73-belt motor, 74-adjusting rod, 75-extension rod, 76-adjusting block, 77-adjusting groove, 8-mud guide assembly, 81-mud guide block, 82-first connecting rod, 83-connecting plate, 9-brush cleaning assembly, 91-cleaning brush, 92-second connecting rod, 93-reset spring, 94-fixed block. DETAILED DESCRIPTION

[0044] In order to further illustrate the method adopted by the present invention and the effect achieved, the technical solution of the present invention will be clearly and completely described in combination with experiments below.

[0045] Example 1: The content of this example is: a dehydration filter press equipment for harmless treatment of sludge, such as Figure 1 and Figure 3 As shown, it includes two fixed plates 1 located at the front and rear sides, an upper liquid collecting tank 2 and a lower liquid collecting tank 3 located between the two fixed plates 1, an upper filter belt 21 rotating around the upper liquid collecting tank 2, and a lower filter belt 31 rotating around the lower liquid collecting tank 3. The upper filter belt 21 and the lower filter belt 31 are both annular and have the same width. The upper filter belt 21 and the lower filter belt 31 overlap between the upper liquid collecting tank 2 and the lower liquid collecting tank 3 for filtering the sludge. A mud feeding plate 11 is provided at the left overlapping portion of the upper filter belt 21 and the lower filter belt 31, and a mud guide groove 14 is provided at the lower right side of the lower filter belt 31.

[0046] like Figure 1 As shown, the front side wall of the upper liquid collecting tank 2 is provided with four first flow guide pipes 25, the front side wall of the lower liquid collecting tank 3 is provided with four second flow guide pipes 32, and the front side of the fixed plate 1 located at the front side is provided with a third flow guide pipe 33, and the bottoms of the first flow guide pipe 25 and the second flow guide pipe 32 are both connected to the third flow guide pipe 33;

[0047] like Figure 2 and Figure 4As shown, a mud feeding plate 11 is provided at the left overlapping start of the upper filter belt 21 and the lower filter belt 31, the right side of the mud feeding plate 11 is tilted downward and the mud feeding plate 11 is a structure of being wide at the top and narrow at the bottom, the bottom width of the mud feeding plate 11 is 3 / 4 of the width of the upper filter belt 21 and the lower filter belt 31, the two sides of the top of the mud feeding plate 11 are respectively fixedly connected to the two fixing plates 1, and four cleaning heads 12 are evenly spaced at the bottom of the mud feeding plate 11;

[0048] like Figure 2 and Figure 3 As shown, both ends of the upper filter belt 21 and the lower filter belt 31 are provided with an outer driving roller 4, which is used to drive the upper filter belt 21 to rotate counterclockwise and drive the lower filter belt 31 to rotate clockwise. The overlapping area of ​​the upper filter belt 21 and the lower filter belt 31 is provided with two inner driving rollers 5 for wave-like guiding the upper filter belt 21 and the lower filter belt 31, and the two inner driving rollers 5 are both located on the inner side of the upper filter belt 21. Each outer driving roller 4 and each inner driving roller 5 are driven to rotate by a driving motor 41 respectively. The driving motor 41 is a commercially available gear reduction motor. The driving motor 41 is fixedly arranged on the fixed plate 1, and the output end of each driving motor 41 passes through the fixed plate 1 and is connected to the center of each outer driving roller 4 and each inner driving roller 5 in a one-to-one correspondence.

[0049] like Figure 3 , Fig. 9 and Fig.11 As shown, a vacuum generator 6 is provided on the right side of each of the two inner driving rollers 5, and the vacuum generator 6 is located on the inner side of the lower filter belt 31, and an auxiliary belt pressing roller 7 is provided on the inner side of the upper filter belt 21 corresponding to the position of the vacuum generator 6, and the vacuum generator 6 includes a shell 61, and a plurality of upwardly protruding air outlet holes 62 are provided at the contact point between the top surface of the shell 61 and the lower filter belt 31, and a vacuum pump 63 is provided on the top wall of one side of the inner part of the shell 61, and the vacuum pump 63 is a commercially available vacuum pump, and a dustproof net 64 is provided below the vacuum pump 63, and a partition 65 is provided in the middle of the shell 61, and a check valve 66 is provided in the middle of the partition 65, and a medicine dispenser 67 is provided below the partition 65;

[0050] like Fig.10 As shown, a mud inlet pipe 22 is provided on the upper right side of the upper liquid collecting tank 2, and a mud guide plate 23 is provided below the outlet of the mud inlet pipe 22. The mud guide plate 23 is inclined downward to the right side, and the upper left part of the mud guide plate 23 is fixedly connected to the mud inlet pipe 22 through a connecting block 26. A mud guide pump 24 is provided at the end of the mud inlet pipe 22;

[0051] like Figure 1 and Figure 3As shown, two mud guide assemblies 8 are provided above the upper liquid collecting tank 2 located on the left side of the mud inlet pipe 22, one of which includes five mud guide blocks 81 arranged side by side, and the other includes six mud guide blocks 81 arranged side by side. A brush cleaning assembly 9 is provided at the upper right end of the upper liquid collecting tank 2 located on the right side of the mud inlet pipe 22, and the brush cleaning assembly 9 includes five cleaning brushes 91 arranged side by side.

[0052] like Figure 3 , Figure 5~Figure 8 As shown, each mud guide block 81 on the mud guide assembly 8 is fixedly connected by a first connecting rod 82, the mud guide block 81 is an inverted triangle, and the bottom of the mud guide block 81 is in contact with the upper filter belt 21, and each cleaning brush 91 on the cleaning brush assembly 9 is fixedly connected by a second connecting rod 92. The front end of the first connecting rod 82 and the front end of the second connecting rod 92 are fixedly connected with an adjustment block 76. An annular adjustment groove 77 is provided on the inner side wall of the bottom of the adjustment block 76. The depth of the adjustment groove 77 is from shallow to deep and then to shallow. The auxiliary belt pressure roller 7 includes a transmission belt 71 and two pulleys 72 located inside the transmission belt 71. One of the pulleys 72 is driven to rotate by a belt motor 73. The belt motor 73 is a commercially available gear reduction motor, the belt motor 73 is fixedly arranged on the front side wall of the fixed plate 1, an adjusting rod 74 penetrating the fixed plate 1 is arranged at the front center of the other pulley 72, an L-shaped extension rod 75 is arranged at the end of the adjusting rod 74, the front end of the extension rod 75 extends to the inside of the adjusting slot 77 and rotates in the adjusting slot 77 with the rotation of the adjusting rod 74, the front ends of the two first connecting rods 82 are fixedly connected with a connecting plate 83, the middle part of the connecting plate 83 is fixedly connected to the top of the adjusting block 76, the rear ends of the first connecting rod 82 and the second connecting rod 92 are each provided with a return spring 93, the rear end of the return spring 93 is provided with a fixed block 94, and the bottom of the fixed block 94 is fixedly connected to the top of the fixed plate 1 located at the rear side;

[0053] like Figure 1 As shown, two scraper plates 13 are provided at the overlapping and separating portion on the right side of the upper filter belt 21 and the lower filter belt 31. The upper scraper plate 13 is tilted toward the upper right and contacts the upper filter belt 21, and the lower scraper plate 13 is tilted toward the lower right and contacts the lower filter belt 31. The two sides of the two scraper plates 13 are fixedly connected to the two fixed plates 1 respectively, and the mud guide groove 14 is located below the two scraper plates 13.

[0054] Embodiment 2: This embodiment differs from Embodiment 1 in that:

[0055] Three mud guiding assemblies 8 are provided above the upper liquid collecting tank 2 located on the left side of the mud inlet pipe 22, one of the mud guiding assemblies 8 includes four mud guiding blocks 81 arranged side by side, the middle mud guiding assembly 8 includes six mud guiding blocks 81 arranged side by side, and the other mud guiding assembly 8 includes eight mud guiding blocks 81 arranged side by side.

[0056] Note: The number of mud guide assemblies 8 affects the degree of sludge dispersion. The more mud guide assemblies 8 are set, the better the dispersion effect. When more mud guide assemblies 8 are set, it is necessary to ensure that the positions of the mud guide blocks 81 on each mud guide assembly 8 are crossed and the numbers of the mud guide blocks 81 on adjacent mud guide assemblies 8 are different. However, setting more mud guide assemblies 8 will also bring negative effects, which will increase the pressure on the adjustment block 76 and the adjustment slot 77.

[0057] At the same time, the depth of the adjustment groove 77 cannot be set too deep, otherwise it may not be possible to push multiple mud guide components 8 to move simultaneously. Therefore, the setting scheme in Example 1 can be selected.

[0058] Embodiment 3: This embodiment differs from Embodiment 1 in that:

[0059] The bottom width of the mud feeding plate 11 is 4 / 5 of the width of the upper filter belt 21 and the lower filter belt 31 .

[0060] Note: If the bottom width of the mud feeding plate 11 is wider, the sludge may be too close to the edges of the upper filter belt 21 and the lower filter belt 31, resulting in leakage during the dehydration and filtration process. If the bottom width of the mud feeding plate 11 is narrower, the sludge may be too thick in the upper filter belt 21 and the lower filter belt 31, resulting in poor dehydration and filtration effects. Therefore, it is sufficient to select within the range given in the present invention.

[0061] Embodiment 4: This embodiment differs from Embodiment 1 in that:

[0062] The front side wall of the upper liquid collecting tank 2 is provided with three first guide tubes 25, the front side wall of the lower liquid collecting tank 3 is provided with three second guide tubes 32, the cleaning brush assembly 9 includes four cleaning brushes 91 arranged side by side, and three cleaning heads 12 are evenly spaced at the bottom of the mud feeding plate 11.

[0063] Embodiment 5: This embodiment differs from Embodiment 1 in that:

[0064] The front side wall of the upper liquid collecting tank 2 is provided with five first guide tubes 25, the front side wall of the lower liquid collecting tank 3 is provided with five second guide tubes 32, the cleaning brush assembly 9 includes eight cleaning brushes 91 arranged side by side, and six cleaning heads 12 are evenly spaced at the bottom of the mud feeding plate 11.

[0065] Note: The number of the first guide tube 25, the second guide tube 32, the cleaning brush 91 and the cleaning head 12 is related to the scale of sludge treatment. The larger the scale of treatment, the greater the number of settings, and vice versa. Reasonable selection within the scope given in the present invention can be made.

[0066] Working principle:

[0067] The working principle of the dehydration filter press equipment for harmless treatment of sludge of the present invention is briefly described below.

[0068] When in use, the sewage-containing sludge to be treated is first pumped into the sludge inlet pipe 22 through the sludge guide pump 24, and then flows out from the sludge guide plate 23 to the upper filter belt 21 above the upper liquid collecting tank 2, and each driving motor 41 is turned on to drive each outer driving roller 4 and the inner driving roller 5 to rotate, so that the upper filter belt 21 rotates counterclockwise along a specified trajectory, and the lower filter belt 31 rotates clockwise along a specified trajectory. The sludge is evenly dispersed by the sludge guide assembly 8 and then moved to the left side. During this period, the sewage in the sludge is initially separated under the action of gravity and falls into the upper liquid collecting tank 2 for recovery, and the remaining sludge falls into the sludge delivery plate 11 and enters between the upper filter belt 21 and the lower filter belt 31;

[0069] Then, the first dehydration and filtration are completed through the squeezing of the first inner driving roller 5, and the liquid is continuously moved to the first vacuum generator 6, and the vacuum pump 63 is turned on to evacuate the inside of the housing 61, so that the air outlet 62 assists in sucking the filtered water under the action of vacuum, and this part of the water is then discharged through the check valve 66, and the rest of the water is discharged through the top of the housing 61, and then it is dehydrated and filtered again through the second inner driving roller 5 and the vacuum generator 6, and is collected by the lower collecting tank 3;

[0070] At the same time, the medicine dispensing device 67 regularly discharges medicine to pre-treat the sewage filtered out by pressure, so that the impact on the environment during subsequent treatment is smaller;

[0071] The two auxiliary belt pressing rollers 7 cooperate with the vacuum generator 6 in real time to turn on the belt motor 73 to drive the pulley 72 to rotate, so that the transmission belt 71 assists in compacting the upper filter belt 21 to improve the filter pressing effect;

[0072] At the same time, the adjusting rod 74 rotates synchronously, driving the extension rod 75 to rotate in the adjusting groove 77. Due to the difference in depth inside the adjusting groove 77, Fig.12 As shown, the dark color indicates a deeper depth, and the light color indicates a shallower depth, so that when the extension rod 75 moves to a shallower position, it pushes the adjustment block 76, so that the first connecting rod 82 and the second connecting rod 92 slide laterally, driving the mud guide block 81 or the cleaning brush 91 to slide synchronously. When the extension rod 75 moves to a deeper position, the push on the adjustment block 76 is released, so that the first connecting rod 82 and the second connecting rod 92 slide laterally and reset under the action of the reset spring 93, so that the reciprocating motion realizes the reciprocating motion of the mud guide block 81 or the cleaning brush 91, thereby achieving the purpose of dispersing the sludge and cleaning the upper filter belt 21;

[0073] When the sludge moves to the left and right sides, it is scraped off by two scraper blades 13 and falls into the sludge guide trough 14 for unified recovery. The first guide pipe 25 guides the sewage inside the upper collecting tank 2, and the second guide pipe 32 guides the sewage inside the lower collecting tank 3, and then uniformly discharged through the third guide pipe 33;

[0074] At the same time, the cleaning head 12 continues to work to flush and clean the lower filter belt 31, and the cleaned water falls into the lower liquid collecting tank 3 and is discharged with the sewage.

Claims

1. A dehydration filter press equipment for harmless treatment of sludge, characterized in that: It comprises two fixed plates (1) located at the front and rear sides, an upper liquid collecting tank (2) and a lower liquid collecting tank (3) located between the two fixed plates (1), an upper filter belt (21) rotating around the upper liquid collecting tank (2), and a lower filter belt (31) rotating around the lower liquid collecting tank (3); The upper filter belt (21) and the lower filter belt (31) are both annular and have the same width. The upper filter belt (21) and the lower filter belt (31) overlap between the upper liquid collecting tank (2) and the lower liquid collecting tank (3) for filtering sludge. A mud delivery plate (11) is provided at the left overlapping area of ​​the upper filter belt (21) and the lower filter belt (31), and a mud guide groove (14) is provided at the lower right side of the lower filter belt (31). An outer driving roller (4) is provided at both ends of the upper filter belt (21) and the lower filter belt (31), and is used to drive the upper filter belt (21) to rotate counterclockwise and drive the lower filter belt (31) to rotate clockwise. Two inner driving rollers (5) for guiding the upper filter belt (21) and the lower filter belt (31) in a wave-like manner are provided in the overlapping area of ​​the upper filter belt (21) and the lower filter belt (31), and the two inner driving rollers (5) are both located on the inner side of the upper filter belt (21). A vacuum generator (6) is provided on the right side of each of the two inner driving rollers (5), and the vacuum generator (6) is located on the inner side of the lower filter belt (31). An auxiliary belt pressing roller (7) is provided on the inner side of the upper filter belt (21) corresponding to the position of the vacuum generator (6); A mud inlet pipe (22) is provided on the upper right side of the upper liquid collecting tank (2); two mud guide assemblies (8) are provided above the upper liquid collecting tank (2) on the left side of the mud inlet pipe (22); the mud guide assemblies (8) include 4 to 8 mud guide blocks (81) arranged side by side; a cleaning brush assembly (9) is provided at the upper right end of the upper liquid collecting tank (2) on the right side of the mud inlet pipe (22); the cleaning brush assembly (9) includes 4 to 8 cleaning brushes (91) arranged side by side; The mud guide blocks (81) on the mud guide assembly (8) are fixedly connected via a first connecting rod (82); the mud guide block (81) is an inverted triangle, and the bottom of the mud guide block (81) is in contact with the upper filter belt (21); and the cleaning brushes (91) on the cleaning brush assembly (9) are fixedly connected via a second connecting rod (92); The front ends of the first connecting rod (82) and the second connecting rod (92) are both fixedly connected to an adjustment block (76); an annular adjustment groove (77) is provided on the inner side wall of the bottom of the adjustment block (76); the depth of the adjustment groove (77) increases from shallow to deep and then to shallow; the auxiliary belt pressure roller (7) comprises a transmission belt (71) and two pulleys (72) located inside the transmission belt (71); one of the pulleys (72) is driven to rotate by a belt motor (73); the belt motor (73) is fixedly arranged on the front side wall of the fixed plate (1); an adjustment rod (74) penetrating the fixed plate (1) is provided at the front center of the other pulley (72); an L-shaped extension rod (75) is provided at the end of the adjustment rod (74); the front end of the extension rod (75) extends into the adjustment groove (77) and rotates in the adjustment groove (77) as the adjustment rod (74) rotates; The front ends of the two first connecting rods (82) are fixedly connected to a connecting plate (83), the middle part of the connecting plate (83) is fixedly connected to the top of the adjusting block (76), the rear ends of the first connecting rod (82) and the rear ends of the second connecting rod (92) are each provided with a return spring (93), the rear ends of the return spring (93) are provided with a fixed block (94), and the bottom of the fixed block (94) is fixedly connected to the top of the fixed plate (1) located at the rear side; The vacuum generator (6) comprises a shell (61). A plurality of upwardly protruding air outlet holes (62) are provided at a contact point between the top surface of the shell (61) and the lower filter belt (31). A vacuum pump (63) is provided on a top wall of one side of the interior of the shell (61). A dustproof net (64) is provided below the vacuum pump (63). A partition (65) is provided in the middle of the shell (61). A check valve (66) is provided in the middle of the partition (65). A medicine dispenser (67) is provided below the partition (65).

2. The dehydration filter press equipment for harmless treatment of sludge according to claim 1, characterized in that: A mud guide plate (23) is provided below the outlet of the mud inlet pipe (22), the mud guide plate (23) is inclined downward to the right side, the upper left side of the mud guide plate (23) is fixedly connected to the mud inlet pipe (22) via a connecting block (26), and a mud guide pump (24) is provided at the end of the mud inlet pipe (22).

3. The dehydration filter press equipment for harmless treatment of sludge according to claim 1, characterized in that: Each of the outer drive rollers (4) and each of the inner drive rollers (5) is driven to rotate by a drive motor (41), the drive motor (41) being fixedly arranged on the fixed plate (1), and the output end of each of the drive motors (41) passes through the fixed plate (1) and is connected to the center of each of the outer drive rollers (4) and each of the inner drive rollers (5) in a one-to-one correspondence.

4. The dehydration filter press equipment for harmless treatment of sludge according to claim 1, characterized in that: The front side wall of the upper liquid collecting tank (2) is provided with 3 to 5 first flow guide pipes (25), the front side wall of the lower liquid collecting tank (3) is provided with 3 to 5 second flow guide pipes (32), the front side of the fixed plate (1) located at the front side is provided with a third flow guide pipe (33), and the bottoms of the first flow guide pipe (25) and the second flow guide pipe (32) are both connected to the third flow guide pipe (33).

5. The dehydration filter press equipment for harmless treatment of sludge according to claim 1, characterized in that: The right side of the mud delivery plate (11) is tilted downward and has a structure that is wide at the top and narrow at the bottom. The bottom width of the mud delivery plate (11) is 3 / 4 to 4 / 5 of the width of the upper filter belt (21) and the lower filter belt (31). Two sides of the top of the mud delivery plate (11) are respectively fixedly connected to the two fixing plates (1). Three to six cleaning heads (12) are evenly spaced at the bottom of the mud delivery plate (11).

6. The dehydration filter press equipment for harmless treatment of sludge according to claim 1, characterized in that: Two scraper plates (13) are provided at the right overlapping and separating portion of the upper filter belt (21) and the lower filter belt (31); the upper scraper plate (13) is inclined toward the upper right and in contact with the upper filter belt (21); the lower scraper plate (13) is inclined toward the lower right and in contact with the lower filter belt (31); the two sides of the two scraper plates (13) are respectively fixedly connected to the two fixing plates (1); and the mud guide groove (14) is located below the two scraper plates (13).

Images