Industrial sewage recovery treatment system

Abstract

The invention relates to the technical field of sewage treatment, in particular to an industrial sewage recycling system which comprises a rack, a hydraulic plate and a plurality of filter plates, the hydraulic plate is arranged in the rack, the filter plates are arranged between the rack and the hydraulic plate, the industrial sewage recycling system further comprises a water pipe, a rubber pipe and a first guide pipe, the water pipe is arranged on one side of the rack, and the rubber pipe is arranged on the other side of the rack. The number of the rubber pipes and the number of the first guide pipes are both multiple, the two ends of each rubber pipe are connected with the water pipe and the corresponding first guide pipe, the rubber pipes are communicated with the interior of the water pipe, and supports are arranged on the tops of the rack, the hydraulic plate and each filter plate. According to the membrane filter press disclosed by the invention, the left spray pipe and the right spray pipe are arranged, so that the two sides of the plurality of filter plates can be simultaneously washed and air-dried after the plurality of filter plates are separated at equal intervals, namely after a filter cake falls off, the subsequent normal use of the membrane filter press is ensured, and meanwhile, the washing and air-drying efficiency of the plurality of filter plates is effectively improved; therefore, the working efficiency of the diaphragm filter press is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a recycling and treatment system for industrial sewage. Background Art

[0002] Printing plants need to use a lot of ink when printing. In order to ensure the printing quality of the printing press, the printing press needs to be cleaned regularly. A lot of sewage will be generated during the cleaning process. When sewage is generated, the problem of sludge treatment must be considered. The existing industrial sewage recovery and treatment system usually first adds flocculants and water softeners in a high-density sedimentation tank. After the sludge is precipitated, the sludge is pumped to the filter press for filtration through a feed pump. Commonly used filter presses include plate and frame filter presses, ordinary chamber filter presses, and diaphragm filter presses. Among them, the diaphragm filter press has the advantage of dehydration by the expansion and extrusion of the diaphragm inside the filter plate, which makes the filter cake dehydration efficiency as high as 50% or more, so it is widely used.

[0003] After the filter cake is dehydrated, the existing diaphragm filter press uses a plate-pulling trolley to pull the corresponding filter plates in turn on the driving path to separate the two adjacent filter plates, so that the filter cake between the two adjacent filter plates can automatically fall off, realizing the automatic recovery of sludge. However, since the sewage discharged from the printing factory still contains sludge with high viscosity, a small amount of sludge will still adhere to the side wall of the filter plate due to viscosity after the filter cake automatically falls off. In view of the above problems, there are good solutions in the prior art, such as patent CN114130080B, which effectively ensures the flushing effect by flushing the side wall of the filter plate by grabbing. However, the following problems still exist: since the sludge in the sewage is very sticky, the filter plate needs to be rinsed after each filtration is completed. However, since only a single filter plate can be grabbed each time, only the grabbed filter plate can be rinsed separately each time. It takes a long time to completely rinse all the filter plates, which greatly affects the working efficiency of the diaphragm filter press. In addition, the water after rinsing will adhere to the side walls of the filter plates and around the filter plates. During the subsequent filtration operation, the water droplets will fall directly on the frame, causing the filter cake after the subsequent filtration to come into contact with the water attached to the frame again after falling, causing the filter cake to absorb water and affect the collection.

[0004] Because, in order to solve the problem that the flushing time of the filter plate is long and affects the working efficiency of the diaphragm filter press, and the filter cake will re-absorb water after falling and affect the collection, an industrial wastewater recovery and treatment system is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an industrial wastewater recycling and treatment system, which solves the problem that the long flushing time of the filter plate affects the working efficiency of the membrane filter press, and the filter cake will absorb water again after falling, which affects the collection. By setting the left nozzle and the right nozzle, the multiple filter plates are separated at equal distances, that is, after the filter cake falls, the two sides of the multiple filter plates can be flushed and air-dried at the same time, which ensures the subsequent normal use of the membrane filter press and effectively improves the flushing and air-drying efficiency of the multiple filter plates, thereby ensuring the working efficiency and filtering effect of the membrane filter press.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A recycling and treatment system for industrial sewage, comprising a frame, a hydraulic plate and a plurality of filter plates, wherein the hydraulic plate is arranged inside the frame, and the plurality of filter plates are arranged between the frame and the hydraulic plate, and further comprising a water pipe, a rubber pipe and a guide pipe 1, wherein the water pipe is arranged on one side of the frame, and a plurality of the rubber pipes and the guide pipe 1 are arranged, and both ends of each of the rubber pipes are connected to the water pipe and the corresponding guide pipe 1, and the rubber pipe is communicated with the inside of the water pipe, and the frame, the hydraulic plate and the top of each filter plate are provided with a bracket, and a traction mechanism is arranged between two adjacent brackets, and when the hydraulic plate moves to the right, the plurality of filter plates are separated at equal distances on the frame by the traction mechanism, and a purge mechanism is arranged inside each of the brackets, and each guide pipe 1 is connected to the corresponding purge mechanism, and in the process of separating the plurality of filter plates at equal distances, the output end of the purge mechanism is guided to the side wall of the corresponding filter plate by the traction mechanism and the corresponding filter plate is washed, and in the process of the hydraulic plate driving the filter plate at the rightmost end to move to the left, the filter plate is air-dried by the purge mechanism.

[0008] It can be seen that there are many ways to rinse the side wall of the filter plate after the filter cake falls. Combined with the actual working scene, the conventional method is to grab each filter plate separately after the filter cake falls, and rinse the grabbed filter plate separately, or install an inclined nozzle on the top of the filter plate to directly rinse the side wall of the corresponding filter plate after the filter cake falls. However, compared with this scheme, the above scheme takes a long time to rinse the filter plate separately, which affects the working efficiency of the entire diaphragm filter press; second, the thickness of the filter plate is small. When the nozzle is tilted above the filter plate, if the nozzle length is long, the required installation space is large, which affects the fit between the two adjacent filter plates. If the nozzle length is short, the water pressure required for the flushing process is large, which is easy to cause the filter screen installed on the side wall of the filter plate to be damaged. This scheme can achieve synchronous flushing of multiple filter plates after separating multiple filter plates at equal distances, effectively ensuring the working efficiency of the diaphragm filter press, and can avoid the situation where the filter screen installed on the side wall of the filter plate is damaged due to excessive water pressure.

[0009] Preferably, the traction mechanism includes a traction rope and a connecting rope 1, the frame and the leftmost filter plate, the hydraulic plate and the rightmost filter plate, and two adjacent filter plates are connected by the traction rope, the end of the connecting rope 1 is connected to the traction rope, the side wall of the connecting rope 1 is provided with a connecting rope 2, and is connected to the corresponding blowing and washing mechanism through the connecting rope 2, the right end of the traction rope is a fixed connection, and the left end of the traction rope is a detachable connection.

[0010] Through the above scheme, after the filtration is completed, during the process of the hydraulic plate moving to the right, the multiple filter plates can be evenly distributed on the frame under the action of multiple traction ropes, and there is no need to separate the multiple filter plates one by one through the plate pulling trolley. In the process of separating multiple filter plates, the filter cake between two adjacent filter plates can fall off automatically, and after the filter cake falls off completely, each nozzle can be guided to the side wall of the corresponding filter plate through the action of connecting rope one and connecting rope two, which is convenient for flushing multiple filter plates at the same time, effectively shortening the collection time of the filter cake and the flushing time of multiple filter plates, thereby improving the working efficiency of the diaphragm filter press, and the detachable connection method can facilitate the removal of the corresponding filter plate, thereby facilitating the disassembly and replacement of the filter screen installed on the side wall of the filter plate.

[0011] Preferably, the purge mechanism includes a sleeve, a casing, a nozzle and a nozzle, the sleeve is arranged inside the corresponding bracket, the sleeve is connected to the sleeve through a sealing bearing, both ends of the nozzle are connected to the casing and the nozzle, the nozzle is connected to the casing and the nozzle, the pipe wall of the nozzle is detachably connected to the corresponding connecting rope, the side wall of the sleeve is provided with a water outlet, and the sleeve is connected to the casing and the nozzle through the water outlet.

[0012] Through the above scheme, multiple filter plates can be distributed on the frame at equal distances before flushing the filter plates. During flushing, multiple filter plates can be flushed at the same time, and there is no need to use a spray pipe to flush multiple filter plates one by one. This effectively shortens the flushing time, improves the flushing efficiency, and can also ensure the working efficiency of the entire diaphragm filter press.

[0013] Preferably, the spraying height of each of the nozzles is set equally, and when the plurality of filter plates are separated by equal distances, the nozzles all point to the upper half of the corresponding filter plates.

[0014] Through the above scheme, the water flow sprayed from the nozzle can directly flush the upper half of the side of the filter plate, and during the flushing process, the water flows from top to bottom, which can achieve comprehensive flushing of the side wall of the filter plate, that is, the filter cake position, thereby ensuring the flushing effect, that is, ensuring the subsequent normal use of the filter plate, and then ensuring the working efficiency of the diaphragm filter press.

[0015] Preferably, the nozzle includes a left nozzle and a right nozzle, the number of the left nozzle is less than the right nozzle, the left nozzle and the right nozzle are alternately arranged in sequence along the axial direction of the sleeve, the left nozzle and the right nozzle are respectively connected to different connecting ropes one through corresponding connecting ropes two, only the left nozzle is arranged above the hydraulic plate, and only the right nozzle is arranged above the left end of the frame.

[0016] By adopting the above scheme, when the traction rope is stretched straight, through the action of connecting rope 1 and connecting rope 2, the nozzles above each filter plate can be directed to both sides of the filter plate, and during the flushing process, the water flow can be prevented from crossing the range of the filter plate, thereby achieving effective flushing of the side width area of ​​the filter plate.

[0017] Preferably, the left nozzle and the right nozzle are arranged with the same length, and the flushing width of the nozzle at the lower end of the left nozzle is 1.5 times that of the nozzle at the lower end of the right nozzle.

[0018] By adopting the above scheme, when the left nozzle and the right nozzle are staggered and arranged in different numbers, it is possible to ensure that the flushing range and flushing effect on both sides of each filter plate are the same within the same time, further avoiding the situation where the flushing water flow exceeds the side range of the filter plate.

[0019] Preferably, a filter slot is disposed on the side wall of the filter plate, and an underflow hole is provided inside the filter plate and the filter slot, and the side wall of the underflow hole is disposed closely against the filter slot.

[0020] Through the above scheme, during the flushing process, each filter plate is in an open tympanic membrane state. At this time, the rubber membranes on both sides of each filter plate will block the upper end position of the corresponding underflow hole, reducing the flow rate of water inside the filter tank from the underflow hole during flushing, ensuring that most of the water flow can fall directly after flushing the filter plate, thereby ensuring the flushing effect.

[0021] Preferably, an air supply duct is provided on one side of the frame, a plurality of air guide ducts are provided on the wall of the air supply duct, and the ducts are connected to the corresponding filter plates through the air guide ducts, a second interconnected guide pipe is sleeved on the wall of the water pipe, and the second guide pipe is connected to the air supply duct through the second guide pipe, and solenoid valves are provided on the walls of the water pipe and the second guide pipe.

[0022] Through the above scheme, after the side walls of the filter plates are flushed, the air inside the air supply pipe can be transported to the water pipe through the guide pipe 2, so that it can be sprayed out from the nozzle through the guide pipe 2 and the nozzle, thereby realizing the synchronous automatic air drying operation of multiple filter plates.

[0023] Preferably, two inclined guide surfaces are symmetrically provided on the top of the filter plate, and the tops of the two inclined guide surfaces are intersecting.

[0024] Through the above scheme, under the action of the two inclined guide surfaces, the water droplets splashed to the top of the filter plate cannot gather and can flow directly to the side position of the filter plate, thereby avoiding the reduction of the air-drying speed of the filter plate due to high humidity during the air-drying process, thereby achieving the purpose of enabling the diaphragm filter press to be put into use quickly and thus improving its working efficiency.

[0025] Preferably, the surface of the inclined guide surface is provided with a plurality of guide grooves 1 and 2 arranged at intervals, the upper ends of the guide grooves 1 and 2 are arranged at the same height, and the lower end of the guide groove 1 is higher than the lower end of the guide groove 2.

[0026] Through the above scheme, when the hydraulic plate pushes the rightmost filter plate to move to the left, the opening angle of the nozzle above the filter plate will decrease accordingly, so that the blown wind can be directed to the surface of the corresponding filter plate under the action of guide groove one and guide groove two, thereby accelerating the air drying speed of the filter plate.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the existing industrial wastewater recycling and treatment system, after the sludge in the wastewater is filtered, the two sides of the filter plate are rinsed by grabbing the filter plate. During the rinsing process, only a single filter plate can be rinsed at a time, thereby reducing the working efficiency of the membrane filter press. In order to improve this problem, the traction mechanism and the blowing mechanism are set up to achieve the equidistant separation of multiple filter plates after the filtration is completed, and the multiple filter plates can be rinsed and air-dried at the same time after the equidistant separation, which shortens the rinsing and air-drying time of multiple filter plates and greatly improves the working efficiency of the membrane filter press.

[0029] 2. By means of the provided traction rope, when the hydraulic plate is driven to move to the right after the filtration is completed, the filter plate at the rightmost end is directly driven to move to the right, and in the process of movement, the plurality of filter plates can be evenly distributed on the frame through the connection of the plurality of traction ropes, and in the process of separation of the plurality of filter plates, the filter cake between two adjacent filter plates can be automatically dropped, effectively shortening the collection time of the filter plates, thereby ensuring the working efficiency of the diaphragm filter press, and by means of the provided connecting rope 1 and connecting rope 2, after the plurality of filter plates are evenly separated, the lower ends of the left nozzle and the right nozzle can be turned upward by means of the connecting rope 1 and the connecting rope 2, and the turning directions of the left nozzle and the right nozzle are opposite, so that the nozzles at the lower ends of the left nozzle and the right nozzle above the same filter plate point to different directions respectively, thereby realizing the synchronous flushing of the side walls of the filter plates on both sides of the filter plates, the right side wall of the left end of the frame or the left side wall of the hydraulic plate, thereby shortening the flushing time, thereby ensuring the working efficiency and filtration effect of the diaphragm filter press.

[0030] 3. By setting up the guide pipe 2, the airflow inside the air supply pipe can be guided to the inside of the nozzle after flushing is completed, and can be sprayed from the position of the corresponding nozzle to the side wall of the corresponding filter plate, so as to realize the synchronous air drying of multiple filter plates. During the air drying process, the hydraulic plate is slowly driven to move to the left, and the distance between the filter plates gradually decreases. In the process of reduction, the flip angle of the nozzle above the filter plate decreases accordingly, so that it can be accelerated to blow to the surface of the corresponding filter plate under the guidance of the inclined guide surface on the top of the filter plate, the guide groove 1 and the guide groove 2, further accelerating the air drying speed, that is, further ensuring the working efficiency of the diaphragm filter press. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 For the present invention Figure 1 Enlarged view of the middle part A;

[0033] Figure 3 For the present invention Figure 1 A schematic diagram of the connection structure of multiple brackets, traction mechanisms and separation mechanisms;

[0034] Figure 4 For the present invention Figure 1 Schematic diagram of the connection structure between the middle filter plate and the purge mechanism;

[0035] Figure 5 It is a rear view structural schematic diagram of the present invention;

[0036] Figure 6 For the present invention Figure 5 Enlarged view of the middle part B;

[0037] Figure 7 For the present invention Figure 5 The state diagram when the purge mechanism is not working;

[0038] Figure 8 For the present invention Figure 7 Enlarged view of part C in the middle.

[0039] In the figure: 1. frame; 2. hydraulic plate; 3. filter plate; 31. filter trough; 32. undercurrent hole; 33. inclined guide surface; 331. guide trough 1; 332. guide trough 2; 4. water pipe; 5. rubber tube; 6. guide pipe 1; 7. bracket; 8. traction mechanism; 81. traction rope; 82. connecting rope 1; 83. connecting rope 2; 9. blowing and washing mechanism; 91. sleeve; 92. sleeve; 93. nozzle; 931. left nozzle; 932. right nozzle; 94. nozzle; 95. water outlet; 10. air supply pipe; 11. air guide pipe; 12. guide pipe 2; 13. solenoid valve. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figures 1 to 8 The present invention provides an industrial wastewater recovery and treatment system, and the technical solution is as follows:

[0042] For details, please refer to Figure 1 and Figure 2 , an industrial sewage recycling and treatment system, including a frame 1, a hydraulic plate 2 and a plurality of filter plates 3, the hydraulic plate 2 is arranged inside the frame 1, and the plurality of filter plates 3 are arranged between the frame 1 and the hydraulic plate 2, and also includes a water pipe 4, a rubber tube 5 and a guide pipe 6, the water pipe 4 is arranged on one side of the frame 1, and a plurality of rubber tubes 5 and guide pipes 6 are arranged, and both ends of each rubber tube 5 are connected to the water pipe 4 and the corresponding guide pipe 6, and the rubber tube 5 is connected to the inside of the water pipe 4, and the frame 1, the hydraulic plate 2 and the top of each filter plate 3 are provided with a bracket 7, and a traction mechanism 8 is provided between two adjacent brackets 7, and when the hydraulic plate 2 moves to the right, the plurality of filter plates 3 are pulled by the traction mechanism 8 They are separated at equal distances on the frame 1, and a purge mechanism 9 is arranged inside each bracket 7. Each guide pipe 6 is connected to the corresponding purge mechanism 9. In the process of separating multiple filter plates 3 at equal distances, the output end of the purge mechanism 9 is guided to the side wall of the corresponding filter plate 3 by the traction mechanism 8 and the corresponding filter plate 3 is flushed. In the process of the hydraulic plate 2 driving the rightmost filter plate 3 to move to the left, the filter plate is air-dried by the purge mechanism 9. After completing the filtration operation and removing multiple filter cakes, water is delivered to the water pipe 4. The water flow inside the water pipe 4 is sprayed out from multiple positions through the diversion effect of multiple rubber tubes 5 and the corresponding guide pipe 6, so that the multiple filter plates 3 can be flushed synchronously.

[0043] As an embodiment of the present invention, refer to Figure 3 The traction mechanism 8 includes a traction rope 81 and a connecting rope 82. The frame 1 and the leftmost filter plate 3, the hydraulic plate 2 and the rightmost filter plate 3, and two adjacent filter plates 3 are connected by the traction rope 81. The end of the connecting rope 82 is connected to the traction rope 81. The side wall of the connecting rope 82 is provided with a connecting rope 83, and is connected to the corresponding blowing mechanism 9 through the connecting rope 83. The right end of the traction rope 81 is fixedly connected, and the left end of the traction rope 81 is detachably connected.

[0044] After the sewage is filtered, the hydraulic plate 2 is controlled to move to the right. During the movement of the hydraulic plate 2 to the right, the rightmost filter plate 3 is driven to move by the corresponding traction rope 81. At the same time, the multiple filter plates 3 can be separated on the frame 1 at equal distances by the connection of multiple traction ropes 81. In the process of separating multiple filter plates 3 at equal distances, the filter cakes between two adjacent filter plates 3 can automatically fall, which greatly shortens the collection time of the filter cakes. When the multiple filter plates 3 are separated at equal distances, each traction rope 81 is in a taut state. At this time, through the action of the connecting rope 1 82 and the connecting rope 2 83, the blowing and washing mechanism 9 can be driven to have an angle deviation, so that the output end of each blowing and washing mechanism 9 points to the side of the corresponding filter plate 3, thereby ensuring the normal flushing of the filter plate 3.

[0045] As an embodiment of the present invention, refer to Figure 3 The blowing mechanism 9 includes a sleeve 91, a sleeve 92, a nozzle 93 and a nozzle 94. The sleeve 91 is arranged inside the corresponding bracket 7. The sleeve 92 is sleeved with the sleeve 91 through a sealed bearing. Both ends of the nozzle 93 are connected with the sleeve 92 and the nozzle 94. The nozzle 93 is communicated with the sleeve 92 and the nozzle 94. The pipe wall of the nozzle 93 is detachably connected to the corresponding connecting rope 83. A water outlet 95 is provided on the side wall of the sleeve 91. The sleeve 91 is communicated with the sleeve 92 and the nozzle 93 through the water outlet 95. The detachable connection of the traction rope 81 and the connecting rope 83 can adopt the method of metal anti-theft chain, so that the filter plate 3 can be disassembled when the filter screen installed on the side wall of the filter plate 3 needs to be replaced after long-term use.

[0046] Under the action of the connecting rope 2 83, when the traction rope 81 is in a taut state, the nozzle 93 will rotate at an angle due to the pulling of the connecting rope 1 82 and the connecting rope 2 83. At this time, the nozzle 94 at the lower end of the nozzle 93 will point to the corresponding side wall of the filter plate 3 due to the angle rotation. In this state, when the water flow is sprayed out from the nozzle 94, it can directly act on the side wall of the corresponding filter plate 3, thereby achieving direct flushing of the filter plate 3.

[0047] As an embodiment of the present invention, refer to Figure 3 and Figure 4 The spraying height of each nozzle 94 is set equally. When multiple filter plates 3 are equidistantly separated, the nozzles 94 all point to the upper half of the corresponding filter plates 3. The nozzle 93 includes a left nozzle 931 and a right nozzle 932. The number of left nozzles 931 is less than that of right nozzles 932. The left nozzles 931 and the right nozzles 932 are alternately arranged in sequence along the axis direction of the sleeve 91. The left nozzles 931 and the right nozzles 932 are respectively connected to different connecting ropes 1 82 through corresponding connecting ropes 2 83. Only the left nozzle 931 is arranged above the hydraulic plate 2, and only the right nozzle 932 is arranged above the left end of the frame 1.

[0048] Since the spraying height of each nozzle 94 is equal and they all spray to the upper half of the corresponding filter plate 3 during operation, under the action of the connecting rope 2 83, the multiple nozzles 94 above each filter plate 3 can be directed to the direction of the adjacent filter plate 3, and all nozzles 94 do not point to the same filter plate 3, so that the sludge in the filter screen adhering to the upper half of the side wall of the filter plate 3 can be washed away. The water flow during the washing process can directly wash the lower half of the side wall of the filter plate 3 under the action of gravity, so as to achieve all-round washing of the sludge attached to the side wall of the filter plate 3. Since the right side of the hydraulic plate 2 and the left side of the frame 1 do not need to be washed, the nozzles 93 above the hydraulic plate 2 and above the left end of the frame 1 are independently set, which can avoid splashing of water during the washing process and ensure the cleanliness of the entire diaphragm filter press and the surrounding environment.

[0049] As an embodiment of the present invention, refer to Figure 4 The left nozzle 931 and the right nozzle 932 are set to be of equal length, and the flushing width of the nozzle 94 at the lower end of the left nozzle 931 is 1.5 times that of the nozzle 94 at the lower end of the right nozzle 932.

[0050] Since the number of the left nozzles 931 is less than that of the right nozzles 932 and the two are arranged alternately, the total number of the left nozzles 931 and the right nozzles 932 is an odd number, that is, the number of nozzles 94 above the same filter plate 3 pointing to the two sides of the filter plate 3 is different. Therefore, when the flushing width of the nozzle 94 at the lower end of the left nozzle 931 is 1.5 times that of the nozzle 94 at the lower end of the right nozzle 932, the width area on both sides of each filter plate 3 can be completely flushed, thereby effectively ensuring the flushing effect.

[0051] As an embodiment of the present invention, refer to Figure 4 The side wall of the filter plate 3 is provided with a filter slot 31 , and the filter plate 3 and the filter slot 31 are both provided with an underflow hole 32 , and the side wall of the underflow hole 32 is closely disposed to the filter slot 31 .

[0052] During the flushing process, the water flow will directly act on the side wall of the corresponding filter plate 3 and flow downward along the side wall of the filter plate 3. Since the filter plate 3 is in a tympanic membrane state, the upper ends of the two underflow holes 32 below will be blocked by the rubber membrane on the surface of the filter plate 3, thereby slowing down the flow of flushing water from the underflow holes 32, so that the flushing water can flow from the side wall of the filter plate 3 as much as possible, thereby effectively ensuring the flushing effect.

[0053] As an embodiment of the present invention, refer to Figure 5 and Figure 6An air supply duct 10 is provided on one side of the frame 1, and a plurality of air guide ducts 11 are provided on the wall of the air supply duct 10, and the air guide ducts 11 are connected to the corresponding filter plates 3. A communicating guide pipe 2 12 is sleeved on the wall of the water pipe 4, and the guide pipe 2 12 is connected to the air supply duct 10, and solenoid valves 13 are provided on the walls of the water pipe 4 and the guide pipe 2 12.

[0054] Under the action of the air supply pipe 10 and the air guide pipe 11, gas can be transported to the inside of the corresponding filter plate 3, so that the dehydration effect can be ensured by further squeezing. During the flushing process, the solenoid valve 13 on the guide pipe 12 is closed and the solenoid valve 13 on the water pipe 4 is opened. At this time, each filter plate 3 is in a tympanic membrane state, and the filter residue attached to the side surface of the filter plate 3 can be directly removed. When water is supplied to the inside of the water pipe 4, the water flow will enter the corresponding sleeve 91 through the rubber tube 5 and the guide pipe, and can be sprayed out through the water outlet 95 opened on the surface of the sleeve 91 and the corresponding nozzle 94, thereby realizing the flushing of the filter plate 3. After flushing is completed, the solenoid valve 13 on the guide pipe 12 is opened and the solenoid valve 13 on the water pipe 4 is closed to disconnect the water flow in the water pipe 4. The airflow inside the air supply pipe 10 will enter the water pipe 4 through the air guide pipe 11, and can be sprayed out through the water outlet 95 opened on the surface of the sleeve 91 and the corresponding nozzle 94, thereby achieving air drying of the filter plate 3, effectively shortening the time required for air drying of multiple filter plates 3, and thus enabling the diaphragm filter press to be quickly put into operation.

[0055] As an embodiment of the present invention, refer to Figure 7 and Figure 8 Two inclined guide surfaces 33 are symmetrically provided on the top of the filter plate 3. The tops of the two inclined guide surfaces 33 are intersectingly arranged. The surfaces of the inclined guide surfaces 33 are provided with a plurality of guide grooves 1 331 and guide grooves 2 332 arranged at intervals. The upper ends of the guide grooves 1 331 and the guide grooves 2 332 are arranged at the same height, and the lower end of the guide groove 1 331 is higher than the lower end of the guide groove 2 332.

[0056] Under the action of the two inclined guide surfaces 33, the water droplets splashed on the top of the filter plate 3 during the flushing process can slide down directly, avoiding the retention of water droplets. During the air drying process, when the hydraulic plate 2 moves to the left, as the distance between the hydraulic plate 2 and the rightmost filter plate 3 gradually decreases, the corresponding flip angle of the right nozzle 932 also decreases, and when the airflow blows to the top of the corresponding filter plate 3, it can be guided by the inclined guide surface 33 and the guide groove 1 331 and the guide groove 2 332 to accelerate the blowing between the hydraulic plate 2 and the rightmost filter plate 3. Due to the different lower end height positions of the guide groove 1 331 and the guide groove 2 332, the air drying range can be expanded, thereby increasing the air drying speed. As the hydraulic plate 2 continues to move to the left, the distance between the rightmost filter plate 3 and the filter plate 3 adjacent to its left will decrease, thereby accelerating the wind speed between the two. Similarly, the drying time of multiple filter plates 3 can be greatly shortened, and the membrane filter press can be put into operation as soon as possible, that is, the working efficiency of the membrane filter press is guaranteed.

[0057] Working principle: After the sewage is filtered, in the process of driving the hydraulic plate 2 to move to the right, through the connection of multiple traction ropes 81, multiple filter plates 3 can be evenly distributed on the frame 1, so that multiple filter cakes can be quickly collected and the collection speed of the filter cakes is shortened. In the process of separating the multiple filter plates 3, due to the pulling of the connecting rope 1 82 and the connecting rope 2 83, the left nozzle 931 and the right nozzle 932 above each filter plate 3 can be flipped to different directions respectively, so that the multiple filter plates 3 can be flushed synchronously, and the flushing time of the multiple filter plates 3 is effectively shortened. After the flushing is completed, the multiple filter plates 3 can be dried synchronously by replacing water with air flow, which effectively shortens the drying time of the multiple filter plates 3, thereby ensuring the working efficiency of the diaphragm filter press.

[0058] Specifically, after the filtration is completed, the hydraulic plate 2 is driven to move to the right. Under the action of the corresponding traction rope 81, the hydraulic plate 2 can drive the adjacent filter plate 3 to move, and then the corresponding filter plates 3 can be pulled in sequence through the action of multiple traction ropes 81, and multiple filter plates 3 are evenly distributed on the frame 1. In the process of separating multiple filter plates 3, the filter cake between two adjacent filter plates 3 can automatically fall off. During the filtration operation, multiple filter plates 3 are in a tightly fitted state, and when multiple filter plates 3 are in a sequentially fitted state, each traction rope 81 is in a relaxed state. After the multiple filter plates 3 are evenly separated, each traction rope 81 is in a stretched state. In the process of the traction rope 81 being stretched, the corresponding connecting rope 1 82 and connecting rope 2 82 can be pulled upwards. Since each left nozzle 931 and right nozzle 932 are connected to different connecting ropes 2 83, Therefore, under the action of the connecting rope 1 82 and the connecting rope 2 83, the lower ends of the left nozzle 931 and the right nozzle 932 above each filter plate 3 are flipped in opposite directions respectively, the multiple right nozzles 932 located above the left end of the frame 1 are flipped toward the right side, and the multiple left nozzles 931 above the hydraulic plate 2 are flipped toward the left side. After the filter cake falls, the solenoid valve 13 on the guide pipe 2 12 is closed and the solenoid valve 13 on the water pipe 4 is opened to send water to the inside of the water pipe 4. The water flow enters the inside of the sleeve 91 under the guidance of the rubber tube 5 and the guide pipe 1 6, and then can be sprayed out from the corresponding nozzle 94 through the water outlet 95 and the nozzle 93, so as to realize the synchronous flushing of the left end right side wall of the frame 1, the left side wall of the hydraulic plate 2 and both sides of the multiple filter plates 3, ensuring the flushing effect while effectively shortening the flushing time, thereby ensuring the working efficiency of the diaphragm filter press. After the flushing is completed, the electromagnetic valve 13 on the guide pipe 2 12 is opened and the electromagnetic valve 13 on the water pipe 4 is closed, the water flow in the water pipe 4 is disconnected, and the airflow inside the air supply pipe 10 is guided to the water pipe 4. After the airflow flows and is guided, it is ejected from the corresponding nozzle 94, so that the synchronous air drying treatment of multiple filter plates 3 can be achieved, which effectively shortens the time required for air drying of multiple filter plates 3, and further ensures the working efficiency of the diaphragm filter press. In the subsequent stage of air drying, the hydraulic plate 2 is driven to move to the left. In the process of the hydraulic plate 2 approaching the filter plate 3 at the rightmost end, due to the reduction of the distance, the wind speed between the two will increase accordingly. Similarly, when the multiple filter plates 3 on the frame 1 move from right to left, the air drying speed of the multiple filter plates 3 can be further accelerated, so that the diaphragm filter press can be put into operation as soon as possible. Although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An industrial wastewater recovery and treatment system, comprising a frame (1), a hydraulic plate (2) and a plurality of filter plates (3), wherein the hydraulic plate (2) is arranged inside the frame (1), and the plurality of filter plates (3) are arranged between the frame (1) and the hydraulic plate (2), characterized in that: It also includes a water pipe (4), a rubber pipe (5) and a guide pipe (6). The water pipe (4) is arranged on one side of the frame (1). A plurality of the rubber pipes (5) and the guide pipe (6) are provided. Both ends of each rubber pipe (5) are connected to the water pipe (4) and the corresponding guide pipe (6). The rubber pipe (5) is connected to the inside of the water pipe (4). The frame (1), the hydraulic plate (2) and the top of each filter plate (3) are provided with a bracket (7). A traction mechanism (8) is provided between two adjacent brackets (7). When moving to the right, a plurality of filter plates (3) are separated at equal distances on the frame (1) by a traction mechanism (8); a purge mechanism (9) is arranged inside each of the brackets (7); each of the guide pipes (6) is connected to a corresponding purge mechanism (9); during the separation of the plurality of filter plates (3) at equal distances, the output end of the purge mechanism (9) is guided to the side wall of the corresponding filter plate (3) by the traction mechanism (8) to flush the corresponding filter plate (3); and during the process of the hydraulic plate (2) driving the rightmost filter plate (3) to move to the left, the purge mechanism (9) is used to air dry the filter plate.

2. The industrial wastewater recovery and treatment system according to claim 1, characterized in that: The traction mechanism (8) comprises a traction rope (81) and a connecting rope 1 (82); the frame (1) and the leftmost filter plate (3), the hydraulic plate (2) and the rightmost filter plate (3), and two adjacent filter plates (3) are all connected via the traction rope (81); the end of the connecting rope 1 (82) is connected to the traction rope (81); a connecting rope 2 (83) is provided on the side wall of the connecting rope 1 (82), and the connecting rope 2 (83) is connected to the corresponding blowing and washing mechanism (9); the right end of the traction rope (81) is fixedly connected, and the left end of the traction rope (81) is detachably connected.

3. The industrial wastewater recovery and treatment system according to claim 2 is characterized in that: The purge mechanism (9) comprises a sleeve (91), a sleeve (92), a nozzle (93) and a nozzle (94); the sleeve (91) is arranged inside a corresponding bracket (7); the sleeve (92) is sleeved with the sleeve (91) via a sealing bearing; two ends of the nozzle (93) are connected to the sleeve (92) and the nozzle (94); the nozzle (93) is in communication with the sleeve (92) and the nozzle (94); the pipe wall of the nozzle (93) is detachably connected to the corresponding connecting rope 2 (83); a water outlet (95) is provided on the side wall of the sleeve (91); and the sleeve (91) is in communication with the sleeve (92) and the nozzle (93) via the water outlet (95).

4. The industrial wastewater recovery and treatment system according to claim 3 is characterized in that: The spraying height of each of the nozzles (94) is set equally, and when a plurality of the filter plates (3) are spaced apart at equal distances, the nozzles (94) are all directed toward the upper half of the corresponding filter plates (3).

5. The industrial wastewater recovery and treatment system according to claim 4, characterized in that: The nozzle (93) comprises a left nozzle (931) and a right nozzle (932), the number of the left nozzle (931) is less than the right nozzle (932), the left nozzle (931) and the right nozzle (932) are arranged alternately in sequence along the axial direction of the sleeve (91), the left nozzle (931) and the right nozzle (932) are respectively connected to different connecting ropes (82) through corresponding connecting ropes (83), only the left nozzle (931) is arranged above the hydraulic plate (2), and only the right nozzle (932) is arranged above the left end of the frame (1).

6. The industrial wastewater recovery and treatment system according to claim 5, characterized in that: The left nozzle (931) and the right nozzle (932) are arranged to be of equal length, and the flushing width of the nozzle (94) at the lower end of the left nozzle (931) is 1.5 times that of the nozzle (94) at the lower end of the right nozzle (932).

7. The industrial wastewater recovery and treatment system according to claim 4, characterized in that: A filter groove (31) is provided on the side wall of the filter plate (3), and an underflow hole (32) is provided inside the filter plate (3) and the filter groove (31), and the side wall of the underflow hole (32) is arranged in close contact with the filter groove (31).

8. The industrial wastewater recovery and treatment system according to claim 7, characterized in that: An air supply pipe (10) is provided on one side of the frame (1); a plurality of air guide pipes (11) are provided on the pipe wall of the air supply pipe (10), and the air guide pipes (11) are connected to the corresponding filter plates (3); a second guide pipe (12) is sleeved on the pipe wall of the water pipe (4), and the water pipe (4) is connected to the air supply pipe (10) via the second guide pipe (12); and electromagnetic valves (13) are provided on the pipe walls of the water pipe (4) and the second guide pipe (12).

9. The industrial wastewater recovery and treatment system according to claim 8, characterized in that: Two inclined guide surfaces (33) are symmetrically provided on the top of the filter plate (3), and the tops of the two inclined guide surfaces (33) are arranged to intersect.

10. The industrial wastewater recovery and treatment system according to claim 9, characterized in that: The surface of the inclined guide surface (33) is provided with a plurality of guide grooves 1 (331) and guide grooves 2 (332) arranged at intervals, the upper ends of the guide grooves 1 (331) and the guide grooves 2 (332) are arranged at the same height, and the lower end of the guide groove 1 (331) is higher than the lower end of the guide groove 2 (332).

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