A plastic foam circulating water treatment system

Abstract

The present invention relates to a plastic foam circulating water treatment system. It solves the problem of poor filtering effect of the circulating water of plastic foam in the prior art. It includes a drainage tank for receiving sewage and a circulating water tank for receiving treated purified water. The drainage tank is connected to the drainage end of the plastic manufacturing equipment, and the circulating water tank is connected to the water inlet end of the plastic manufacturing equipment. The drainage tank is connected to a pressure filtration device, and the output end of the pressure filtration device is connected to a diaphragm pump water treatment component. The purified water end of the diaphragm pump water treatment component is provided with a drip irrigation water treatment structure connected to the circulating water tank, and the sewage discharge end of the diaphragm pump water treatment component is connected to a sludge treatment device. The advantages of the present invention are: not only the filtering effect is good, but also the harmful impurities in the circulating water can be reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment equipment, and specifically relates to a plastic foam circulating water treatment system. Background Art

[0002] During the plastic foam manufacturing process, the main raw materials are mainly in powder form. In addition to the main raw materials, other substances such as lubricating powder are carried in the plastic foam material to facilitate molding. However, in actual production, the pre-expanded molding process requires water circulation for cooling, and substances such as lubricating powder that do not participate in molding are carried away with the circulating water. After filtration, the water is re-circulated and used as cooling water again. However, traditional circulating water filtration devices are difficult to effectively filter and treat impurities such as lubricating powder, resulting in poor usage effects and environmental pollution. Prolonged use will cause the circulating water mixed with impurities such as lubricating powder to re-enter the pre-expansion process as cooling water, easily clogging and wearing the cooling pipes, nozzles, air holes, etc. of the mold, affecting production. Summary of the Invention

[0003] The purpose of the present invention is to address the above problems and provide a plastic foam circulating water treatment system with good usage effects.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A plastic foam circulating water treatment system includes a drainage pool for receiving sewage and a circulating pool for receiving treated purified water. The drainage pool is connected to the drainage end of the plastic manufacturing equipment, and the circulating pool is connected to the water inlet end of the plastic manufacturing equipment. The drainage pool is connected to a pressure filtration device, and the output end of the pressure filtration device is connected to a diaphragm pump water treatment component. The purified water end of the diaphragm pump water treatment component is provided with a drip irrigation water treatment structure connected to the circulating pool, and the sewage discharge end of the diaphragm pump water treatment component is connected to a sludge treatment device.

[0005] This system filters and diverts the sewage discharged from the drainage end of the plastic manufacturing equipment by setting a pressure filtration device and a diaphragm pump water treatment component, effectively removing impurities such as lubricating powder, and using the diaphragm pump water treatment component for diversion. Among them, the purified water enters the circulating pool after the suspended particles are precipitated through the drip irrigation water treatment structure, while the sewage containing solid impurities such as sludge is diverted to the sludge treatment device for filtering and removing harmful substances. It not only has good filtration effects but also can reduce the harmful impurities in the circulating water, with good usage effects.

[0006] In the above-mentioned plastic foam circulating water treatment system, the drip irrigation water treatment structure includes a purified water outlet pipe connected to the purified water end. A drip irrigation interface is provided on the purified water outlet pipe, and an alum drip irrigation pipe is inserted into the drip irrigation interface. The end of the alum drip irrigation pipe away from the drip irrigation interface is connected to a drip irrigation tank body, and a regulating valve for adjusting the drip irrigation flow rate is provided on the drip irrigation pipe body. A feeding port is provided on the drip irrigation tank body. The drip irrigation water treatment structure can precipitate the suspended particles that have not been filtered in the purified water, effectively reducing the impurities in the circulating water.

[0007] In the above-mentioned plastic foam circulating water treatment system, the pressure filtration device includes a feeding cross beam. A thrust plate is provided at one end of the feeding cross beam, and a pressing plate is provided at the other end. A number of frame filtration structures with the same specifications are slidably provided on the feeding cross beam, and a liquid inlet structure is provided through the upper side of the frame filtration structure. A liquid outlet assembly is provided at the lower end of the frame filtration structure. A hydraulic driving assembly is provided on one side of the pressing plate, which can drive the frame filtration structures to squeeze each other so that the liquid in the frame filtration structures is discharged to the liquid outlet assembly.

[0008] By providing a liquid inlet structure on the upper side of the frame filtration structure and a liquid outlet assembly on the lower side of the frame filtration structure, during pressure filtration, the liquid enters from inside the feeding cross beam, passes through the frame filtration structure for pressure filtration, and is shunted by the liquid outlet assembly. After use, the liquid inlet structure can be used to introduce cleaning agents and clean water to flush the inside of the frame filtration structure, effectively ensuring the cleanliness of the frame filtration structure, improving the service life, and having a good use effect.

[0009] In the above-mentioned plastic foam circulating water treatment system, the sludge treatment device includes a sludge water tank connected to the sewage discharge end of the diaphragm pump water treatment component. The sludge water tank is positioned and supported by a water tank frame body, and there is a sewage discharge port at the lower side of the sludge water tank. The sewage discharge port is connected to a drying box body through a guide pipe. A drain pipe connected to a steam trap is provided on one side of the drying box body, and a discharge pipe is provided at the other end. The drying box body is positioned by a plug-in heat conduction component provided at the bottom, and a heater is connected to the bottom of the plug-in heat conduction component. The drying box body and the sludge water tank are arranged in a staggered manner, and a plug-in filter screen mechanism is detachably provided in the middle of the sludge water tank.

[0010] By providing a plug-in filter screen mechanism in the middle of the sludge water tank, the filter screen can be flexibly replaced according to the impurity situation in the sludge for effective filtration, thus avoiding the situation that a large amount of industrial and chemical garbage exists in the treated sewage. And by providing a plug-in heat conduction component at the bottom of the drying box body, uniform heating can be carried out by using the heater, and the sludge can be quickly dried in cooperation with the steam trap, and the use effect is good.

[0011] In the above-mentioned plastic foam circulating water treatment system, a liquid receiving frame body is provided at the bottom of the frame filtering structure, and sliding support parts are provided at both ends of the frame filtering structure. The sliding support parts are slidably arranged on the support plate frame, and a fixed support is provided at the bottom of the thrust plate. Both ends of the pressing plate are arranged on the sliding support parts through moving pulleys; the frame filtering structure includes a flexible filter frame pressing plate, a filter cloth is provided in the middle of the flexible filter frame pressing plate, and the filter cloth is a multi-layer connection structure. A feeding channel through which the feeding cross beam can pass is provided on the filter cloth, and a number of discharge holes communicating with the inner cavity of the filter cloth are circumferentially arranged on the feeding cross beam. The setting of the sliding support part enables the frame filtering structure to perform telescopic movement, so as to realize pressure filtration, and can effectively discharge the filtrate or the sewage for flushing. The circumferentially arranged discharge holes enable the liquid entering the inner cavity of the feeding cross beam to flow circumferentially to the filter cloth to achieve uniform filtration.

[0012] In the above-mentioned plastic foam circulating water treatment system, the liquid inlet structure includes a cleaning liquid inlet pipe and a flushing water inlet pipe. One end of the cleaning liquid inlet pipe and the flushing water inlet pipe is connected to the thrust plate, and the other end penetrates through the upper side of the flexible filter frame pressing plate. A discharge channel is provided at the position where the cleaning liquid inlet pipe and the flushing water inlet pipe are in contact with the flexible filter frame pressing plate, and the discharge channel is communicated with the inner cavity of the filter cloth; the ends of the cleaning liquid inlet pipe and the flushing water inlet pipe far from the thrust plate are closed, and a feeding flange is provided at the other end. The cleaning liquid inlet pipe and the flushing water inlet pipe facilitate the entry of the cleaning liquid and the flushing water into each flexible filter frame pressing plate to flush the filter cloth; during daily pressure filtration, the feeding flange can be used to seal the cleaning liquid inlet pipe and the flushing water inlet pipe, and it is opened during flushing to prevent the overflow of liquid materials.

[0013] In the above-mentioned plastic foam circulating water treatment system, the liquid outlet assembly includes a cleaning drain pipe and a filtrate discharge pipe. The cleaning drain pipe and the filtrate discharge pipe are respectively arranged through the flexible filter frame pressing plate and are located below the filter cloth. The inner cavity of the filter cloth is connected to the cleaning drain pipe and the filtrate discharge pipe respectively through a diversion pipe; a diversion pipe is provided on one side of the filtrate discharge pipe and is located inside the flexible filter frame pressing plate. One end of the diversion pipe extends out of the flexible filter frame pressing plate and a diversion valve is provided at the end. A sewage discharge pipe is provided on one side of the cleaning drain pipe and is located inside the flexible filter frame pressing plate. One end of the sewage discharge pipe extends out of the flexible filter frame pressing plate and a sewage discharge valve is provided at the end; one end of the cleaning drain pipe and the filtrate discharge pipe is closed, and the other end can be opened and closed through a diversion flange provided on one side of the thrust plate; the hydraulic drive assembly includes a hydraulic drive cylinder. The hydraulic drive cylinder is arranged between one ends of the sliding support parts through a cylinder seat, and the output shaft of the hydraulic drive cylinder is connected to the pressing plate.

[0014] The cleaning drain pipe is used for discharging the sewage after cleaning, while the filtrate discharge pipe can discharge the filtrate after pressure filtration. When pressure filtration is carried out, the sewage discharge pipe can be closed by the sewage discharge valve, and when flushing, the drainage pipe can be closed by the diversion valve to prevent mixed flow. Moreover, the setting of the diversion flange enables the overall discharge of the sewage after flushing or the filtrate after pressure filtration.

[0015] In the above-mentioned plastic foam circulating water treatment system, a feeding pipe is provided at the sewage discharge port at the bottom of the drying box body. A flow regulating valve is provided on the feeding pipe, and the feeding pipe is connected to the drying box body through the above-mentioned material guiding pipe; the upper end of the sludge water tank has a feeding frame, and the lower end of the feeding frame is connected to an oil leakage part with a conical shape, and the upper end of the feeding port has a feeding opening. The above-mentioned sewage discharge port is arranged at the bottom of the leakage part. Both sides in the middle of the sludge water tank have plugging openings that communicate with each other and are on the same axis. The plug-in type filter screen mechanism can be detachably plugged into the plugging openings. The flow regulating valve can adjust the sewage flow according to needs, and has good flexibility in use.

[0016] In the above-mentioned plastic foam circulating water treatment system, the plug-in type filter screen mechanism includes a double-layer filter sleeve net structure inserted into the feeding frame from the plugging opening on one side in the middle of the sludge water tank, and a single-layer filter screen structure is plugged on the other side in the middle of the sludge water tank. The single-layer filter screen structure is plugged in the middle of the double-layer filter sleeve net structure; the double-layer filter sleeve net structure includes a coarse filter screen and a fine filter screen arranged in parallel up and down. There is a plugging gap between the coarse filter screen and the fine filter screen, and one end of the coarse filter screen and the fine filter screen is fixedly connected with a first sealing cover plate. The upper and lower ends of the first sealing cover plate respectively have first plugging connection parts; the single-layer filter screen structure includes a composite filter screen arranged horizontally. A second sealing cover plate is provided at one end of the composite filter screen, and second plugging connection parts are provided at both ends of the second sealing cover plate. The position of the composite filter screen is correspondingly arranged with the plugging gap.

[0017] According to the filtration requirements, the double-layer filter sleeve net structure or the single-layer filter screen structure can be set separately, or the double-layer filter sleeve net structure and the single-layer filter screen structure can be superimposed. It has good flexibility in use; through the coarse filter screen and the fine filter screen, the impurities in the sludge can be filtered twice, improving the filtration effect and avoiding the mixing of impurities in the sewage or sludge.

[0018] In the above-mentioned plastic foam circulating water treatment system, positioning slots for inserting the first plug-in connection part and the second plug-in connection part are provided above and below the plug-in openings on both sides of the middle of the sludge water tank. The plug-in openings on both sides of the middle of the sludge water tank are respectively closed by a first sealing plate and a second sealing plate. And the inner wall of the feed frame is provided with an installation slot for inserting a composite filter screen, and connection slots for inserting a coarse filter screen and a fine filter screen are respectively provided above and below the installation slot; The plug-in type heat conduction component includes a box body positioning frame. The two ends of the box body positioning frame are open, and there are vertical positioning frame plates on both sides. The bottom of the positioning frame plate has a heat conduction support plate, and support plates are provided on both sides of the bottom of the box body positioning frame; Guide positioning insertion strips are axially arranged on the inner wall of the positioning frame plate. Guide positioning slots corresponding to the guide positioning insertion strips are provided on the outer walls of both sides of the drying box body. A plurality of drying protrusions are provided on the upper end surface of the heat conduction support plate, and a plurality of embedding grooves corresponding to the drying protrusions are provided at the bottom of the drying box body.

[0019] The connection slots facilitate the position positioning of the coarse filter screen and the fine filter screen, and the installation slot facilitates the positioning of the composite filter screen, increasing the bearing capacity and avoiding displacement and misalignment during filtration. The guide positioning insertion strips can position the drying box body, and the insertion is more convenient. Moreover, the setting of the drying protrusions and the embedding grooves is beneficial to improving the heat conduction effect.

[0020] Compared with the existing technology, the advantages of the present invention are as follows: The sewage discharged from the drainage end of the plastic manufacturing equipment is pressure-filtered by a pressure filtration device to realize the solid-liquid separation of the sewage, and pneumatic pumping is carried out through a diaphragm pump water treatment component, so as to carry out the solid-liquid shunt. The shunted liquid enters the circulating water tank after drip irrigation and precipitation through a drip irrigation water treatment structure, and the shunted solid waste enters the sludge treatment device for filtration treatment to remove industrial waste and reduce pollution. It can not only effectively reduce impurities such as slip powder in the circulating water, but also filter the impurities in the discharged sewage after cooling, preventing environmental pollution, and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall connection block diagram of the present invention;

[0022] Figure 2 is the structural schematic diagram of the diaphragm pump water treatment component in the present invention

[0023] Figure 3 is the overall structural schematic diagram of the pressure filtration device in the present invention;

[0024] Figure 4 is the top view of the pressure filtration device in the present invention;

[0025] Figure 5 is the structural schematic diagram of the pressure filtration device from another perspective in the present invention;

[0026] Figure 6 It is a cross-sectional view of the frame filtering structure in the present invention;

[0027] Figure 7 It is a side cross-sectional view of the frame filtering structure in the present invention;

[0028] Figure 8 It is a schematic diagram of the overall structure of the sludge treatment device in the present invention;

[0029] Figure 9 It is a schematic diagram of the structure of the box positioning frame in the present invention;

[0030] Figure 10 It is a front view of the drying box in the present invention;

[0031] Figure 11 It is a schematic diagram of the structure of the plug-in filter screen mechanism in the present invention;

[0032] Figure 12 It is a schematic diagram of the structure of Embodiment 1;

[0033] Figure 13 It is a schematic diagram of the structure of Embodiment 2;

[0034] Figure 14 It is a schematic diagram of the structure of Embodiment 3;

[0035] Figure 15 It is a schematic diagram of the structure of Embodiment 4;

[0036] In the figure: drainage pool 1, circulating water pool 11, drainage end 12 of plastic manufacturing equipment, water inlet end 13 of plastic manufacturing equipment, pressure filtration device 2, feeding cross beam 21, thrust plate 211, pressing plate 212, moving pulley 2121, discharge hole 213, frame filtering structure 22, sliding support part 221, flexible filter frame pressing plate 222, filter cloth 223, feeding channel 224, liquid inlet structure 23, cleaning liquid inlet pipe 231, washing water inlet pipe 232, discharge channel 233, feeding flange 234, liquid outlet assembly 24, cleaning drain pipe 241, filtrate discharge pipe 242, diversion pipe 243, drainage pipe 244, drainage valve 245, sewage discharge pipe 246, sewage discharge valve 247, diversion flange 248, hydraulic drive assembly 25, hydraulic drive oil cylinder 251, oil cylinder seat 252, liquid receiving frame 26, support plate frame 261, fixed support 262, diaphragm pump water treatment assembly 3, clean water end 31, sewage discharge end 32, drip irrigation water treatment structure 4, clean water outlet pipe 41, drip irrigation interface 42, alum drip irrigation pipe 43, drip irrigation tank body 44, regulating valve 45, feeding port 46, sludge treatment device 5, sludge water tank 51, water tank frame 511, sewage discharge port 512, material guiding pipe 513, material conveying pipe 514, flow regulating valve 515, feeding frame 516, material leakage part 517, material inlet 518, plugging opening 519, first sealing plate 5191, second sealing plate 5192, drying box body 52, water conveying pipe 521, discharge pipe 522, guiding and positioning slot 523, embedding groove 524, plug-in type heat conduction assembly 53, box body positioning frame 531, positioning frame plate 532, guiding and positioning plug 5321, heat conduction support plate 533, drying convex part 5331, support plate frame 534, heater 54, plug-in type filter screen mechanism 55, positioning slot 551, installation slot 552, connection slot 553, double-layer filter sleeve net structure 56, coarse filter screen 561, fine filter screen 562, plugging gap 563, first sealing cover plate 564, first plugging connection part 565, single-layer filter screen structure 57, composite filter screen 571, second sealing cover plate 572, second plugging connection part 573. Detailed implementation manners

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0038] As Figure 1 shown, a plastic foam circulating water treatment system includes a drainage pool 1 for receiving sewage and a circulating water pool 11 for receiving treated clean water. The drainage pool 1 is connected to the drainage end 12 of the plastic manufacturing equipment, and the circulating water pool 11 is connected to the water inlet end 13 of the plastic manufacturing equipment. The drainage pool 1 is connected to a pressure filtration device 2, and the output end of the pressure filtration device 2 is connected to a diaphragm pump water treatment assembly 3. The clean water end 31 of the diaphragm pump water treatment assembly 3 is provided with a drip irrigation water treatment structure 4 connected to the circulating water pool 11, and the sewage discharge end 32 of the diaphragm pump water treatment assembly 3 is connected to a sludge treatment device 5.

[0039] During use, the sewage discharged from the drainage end 12 of the plastic manufacturing equipment enters the drainage pool 1 and flows into the pressure filtration device 2 for solid-liquid separation. The separated liquid is pneumatically pumped out by the diaphragm pump water treatment component 3 and flows through the purified water end 31 to the circulating water pool 11. During the process of flowing to the circulating water pool 11, the suspended particles are settled through the drip irrigation water treatment structure 4, while the separated sludge and solid impurities enter the sludge treatment device 5 for filtration and drying, avoiding environmental pollution and reducing impurities such as lubricating powder in the circulating water.

[0040] As Figure 2 shown, the drip irrigation water treatment structure 4 includes a purified water outlet pipe 41 connected to the purified water end 31. The purified water outlet pipe 41 is provided with a drip irrigation interface 42, and an alum drip irrigation pipe 43 is inserted into the drip irrigation interface 42. One end of the alum drip irrigation pipe 43 away from the drip irrigation interface 42 is connected to a drip irrigation tank body 44, and a regulating valve 45 for adjusting the drip irrigation flow rate is provided on the drip irrigation pipe body. A feeding port 46 is provided on the drip irrigation tank body 44.

[0041] Alum is added to the liquid flowing out through the purified water end by the drip irrigation water treatment structure 4 to form an alum aqueous solution, so that the suspended particles in the liquid flowing into the circulating water pool settle to the bottom of the circulating water pool and are cleaned regularly.

[0042] As Figures 3 - 7 shown, the pressure filtration device 2 includes a feeding cross beam 21. One end of the feeding cross beam 21 is provided with a thrust plate 211, and the other end is provided with a pressing plate 212. A number of frame filtering structures 22 with the same specifications are slidably arranged on the feeding cross beam 21, and a liquid inlet structure 23 is arranged through the upper side of the frame filtering structure 22. A liquid outlet assembly 24 is arranged at the lower end of the frame filtering structure 22. A hydraulic driving assembly 25 is arranged on one side of the pressing plate 212, which can drive the frame filtering structures 22 to squeeze each other so that the liquid in the frame filtering structures 22 is discharged to the liquid outlet assembly 24.

[0043] During pressure filtration, the liquid material enters from the inner cavity of the feeding cross beam 1 and is filtered through the frame filtering structure 2. During the filtering process, the pressing plate 12 is pushed by the hydraulic driving assembly 5 to press and filter the frame filtering structure 2, and the filtered filtrate is discharged through the liquid outlet assembly 4.

[0044] Furthermore, a liquid receiving frame 26 is provided at the bottom of the frame filtering structure 22, and sliding support parts 221 are provided at both ends of the frame filtering structure 22. The sliding support parts 221 are slidably arranged on the support plate frame 261, and a fixed bracket 262 is provided at the bottom of the thrust plate 211. Both ends of the pressing plate 212 are arranged on the sliding support parts 221 through moving pulleys 2121. The frame filtering structure 22 includes a flexible filter frame pressing plate 222. A filter cloth 223 is provided in the middle of the flexible filter frame pressing plate 222, and the filter cloth 223 is a multi-layer connection structure. A feed channel 224 through which the feed cross beam 21 can pass is provided on the filter cloth 223, and a number of discharge holes 213 communicating with the inner cavity of the filter cloth 223 are circumferentially provided on the feed cross beam 21.

[0045] The liquid receiving frame 6 is divided into a filtrate liquid receiving frame and a cleaned sewage liquid receiving frame. The pressing plate 12 can move along the support plate frame 61 to squeeze the frame filtering structure 2 to achieve pressure filtration, and adjacent liquid receiving frames 6 are connected to each other through elastic belts. When the pressing plate 12 squeezes the liquid receiving frame 6, the filter cloth 23 is synchronously squeezed, and the liquid therein continuously accelerates downward and filters out. During daily use, the discharge holes 13 correspond to the inner cavity of the filter cloth 23. When squeezing, no liquid is conveyed in the feed cross beam 1, and the filtered liquid flows to the filtrate discharge pipe 42.

[0046] Furthermore, the liquid inlet structure 23 includes a cleaning liquid inlet pipe 231 and a flushing water inlet pipe 232. One ends of the cleaning liquid inlet pipe 231 and the flushing water inlet pipe 232 are connected to the thrust plate 211, and the other ends penetrate through the upper side of the flexible filter frame pressing plate 222. A discharge channel 233 is provided at the position where the cleaning liquid inlet pipe 231 and the flushing water inlet pipe 232 are in contact with the flexible filter frame pressing plate 222, and the discharge channel 233 is communicated with the inner cavity of the filter cloth 223. The ends of the cleaning liquid inlet pipe 231 and the flushing water inlet pipe 232 away from the thrust plate 211 are closed, and a feed flange 234 is provided at the other end. When flushing, first, the cleaning agent is introduced into the filter cloth through the cleaning liquid inlet pipe 31, then the pressing plate 12 applies a squeezing force to the filter cloth to achieve wetting of the filter cloth, and then water flow is introduced through the flushing water inlet pipe 32 for flushing. The sewage after flushing enters the cleaning drain pipe 41 and is discharged.

[0047] Specifically, the liquid discharging assembly 24 includes a cleaning drain pipe 241 and a filtrate discharge pipe 242. The cleaning drain pipe 241 and the filtrate discharge pipe 242 are respectively disposed through the flexible filter frame pressing plate 222 and are located on the lower side of the filter cloth 223. The inner cavity of the filter cloth 223 is connected to the cleaning drain pipe 241 and the filtrate discharge pipe 242 through a diversion pipe 243. When pressure filtration is performed, the cleaning drain pipe 41 is closed and the filtrate discharge pipe 42 is opened. When flushing is performed, the cleaning drain pipe 41 is opened and the filtrate discharge pipe 42 is closed. On one side of the filtrate discharge pipe 242 and within the flexible filter frame pressing plate 222, a diversion pipe 244 is provided. One end of the diversion pipe 244 extends out of the flexible filter frame pressing plate 222 and a diversion valve 245 is provided at the end. On one side of the cleaning drain pipe 241 and within the flexible filter frame pressing plate 222, a sewage discharge pipe 246 is provided, and one end of the sewage discharge pipe 246 extends out of the flexible filter frame pressing plate 222 and a sewage discharge valve 247 is provided at the end. A diversion valve 45 is provided on each diversion pipe 44. When pressure filtration is performed, the filtrate enters the filtrate discharge pipe 42. At this time, if filtrate needs to be discharged, the diversion valve 45 is closed and the diversion flange 48 is opened to connect to an external pipeline for recycling. If the filtrate is directly discharged, the diversion flange 48 is closed and the diversion valve 45 is opened for individual emptying, so that the filtrate flows into the filtrate receiving frame. One end of the cleaning drain pipe 241 and the filtrate discharge pipe 242 is in a closed state, and the other end can be opened and closed through a diversion flange 248 provided on one side of the thrust plate 211. The hydraulic drive assembly 25 includes a hydraulic drive cylinder 251. The hydraulic drive cylinder 251 is disposed between one ends of the sliding support portion 221 through a cylinder seat 252. The output shaft of the hydraulic drive cylinder 251 is connected to the pressing plate 212. The pressing plate 12 is driven to move by the hydraulic drive cylinder 51 to press the frame filter structure 2.

[0048] As Figures 8 - 11 shown, the sludge treatment device 5 includes a sludge water tank 51 connected to the sewage discharge end 32 of the diaphragm pump water treatment assembly 3. The sludge water tank 51 is positioned and supported by a water tank frame 511. A sewage discharge port 512 is provided on the lower side of the sludge water tank 51. The sewage discharge port 512 is connected to a drying box body 52 through a material guide pipe 513. A drain pipe connected to a steam trap is provided on one side of the drying box body 52, and a discharge pipe 522 is provided at the other end. The drying box body 52 is positioned by a plug-in type heat conduction assembly 53 provided at the bottom. The bottom of the plug-in type heat conduction assembly 53 is connected to a heater 54. The drying box body 52 and the sludge water tank 51 are arranged in a staggered manner. A plug-in type filter screen mechanism 55 is detachably provided in the middle of the sludge water tank 51.

[0049] The plug-in type filter screen mechanism 5 can replace different filter screens according to the actual situation of the sludge, and the plug-in installation method is more convenient. The heater 4 heats the sludge, and the moisture in the sludge is heated to form water vapor and discharged to the outside through the steam trap.

[0050] Specifically, a feed pipe 514 is provided at the sewage outlet 512 at the bottom of the drying box body 52. A flow regulating valve 515 is provided on the feed pipe 514, and the feed pipe 514 is connected to the drying box body 52 through the above-mentioned material guiding pipe 513. The flow regulating valve 15 is used to regulate the flow rate of the sludge. On the one hand, it can be regulated according to the filtration speed, and on the other hand, it can be regulated according to the drying speed. The upper end of the sludge water tank 51 has a feed frame 516. The lower end of the feed frame 516 is connected to an oil leakage part 517 which is tapered. The upper end of the feed port has a feed inlet 518. The above-mentioned sewage outlet 512 is arranged at the bottom of the leakage part 517. On both sides of the middle part of the sludge water tank 51, there are plugging openings 519 that are interconnected and located on the same axis. The plug-in type filter screen mechanism 55 can be detachably plugged into the plugging openings 519. The sludge naturally precipitates in the feed frame 16 and is guided to the sewage outlet 12 through the leakage part 17.

[0051] Among them, the plug-in type filter screen mechanism 55 includes a double-layer filter sleeve net structure 56 inserted into the feed frame 516 from the plugging opening 519 on one side of the middle part of the sludge water tank 51. And a single-layer filter screen structure 57 is plugged on the other side of the middle part of the sludge water tank 51. The single-layer filter screen structure 57 is plugged in the middle of the double-layer filter sleeve net structure 56. The double-layer filter sleeve net structure 56 includes a coarse filter screen 561 and a fine filter screen 562 arranged in parallel up and down. There is a plugging gap 563 between the coarse filter screen 561 and the fine filter screen 562. And one end of the coarse filter screen 561 and the fine filter screen 562 is fixedly connected with a first sealing cover plate 564. The upper and lower ends of the first sealing cover plate 564 respectively have first plugging connection parts 565. The first sealing cover plate 64 is used to close the plugging opening 19 to prevent sludge from overflowing. Among them, the double-layer filter sleeve net structure 6 is mainly used to filter visible industrial waste. The single-layer filter screen structure 57 includes a composite filter screen 571 arranged horizontally. One end of the composite filter screen 571 is provided with a second sealing cover plate 572. And the two ends of the second sealing cover plate 572 are provided with second plugging connection parts 573. The position of the composite filter screen 571 is correspondingly arranged with the plugging gap 563. The single-layer filter screen structure 7 is used to filter invisible chemical waste.

[0052] More specifically, positioning slots 551 into which the first plug-in connection part 565 and the second plug-in connection part 573 can be inserted are provided above and below the plug-in openings 519 on both sides in the middle of the sludge water tank 51. The plug-in openings 519 on both sides in the middle of the sludge water tank 51 are respectively closed by a first sealing plate 5191 and a second sealing plate 5192, and installation slots 552 into which the composite filter screen 571 can be inserted are provided on the inner wall of the feed frame 516. Connection slots 553 into which the coarse filter screen 561 and the fine filter screen 562 can be inserted are provided on the upper and lower sides of the installation slots 552 respectively; the plug-in type heat conduction assembly 53 includes a box body positioning frame 531. Both ends of the box body positioning frame 531 are open, and positioning frame plates 532 are provided on both sides and are vertically arranged. A heat conduction support plate 533 is provided at the bottom of the positioning frame plate 532, and support plates 534 are provided on both sides at the bottom of the box body positioning frame 531; guiding positioning insertion strips 5321 are axially provided on the inner wall of the positioning frame plate 532, and guiding positioning slots 523 corresponding to the guiding positioning insertion strips 5321 are provided on the outer walls on both sides of the drying box body 52. A plurality of drying convex parts 5331 are provided on the upper end surface of the heat conduction support plate 533, and a plurality of embedding grooves 524 corresponding to the drying convex parts 5331 are provided at the bottom of the drying box body 52. A plurality of cross bars with air holes are provided in the drying box body 2, and the cross bars are connected to a steam trap, so as to realize the extraction of water and steam by using the steam trap.

[0053] Embodiment 1

[0054] As Figure 12 shown, the single-layer filter screen structure 7 and the double-layer filter sleeve net structure 6 are respectively inserted into the corresponding installation slots 52 and connection slots 53 to form a superimposed filtering method. At this time, the composite filter screen 71 is located in the plug-in gap 63, and both sides are positioned by the installation slots 52, forming a three-layer fine filtration of the coarse filter screen 61, the combined filter screen 71, and the fine filter screen 62. The second sealing cover plate 72 and the first sealing cover plate 64 are respectively inserted into the corresponding positioning slots 51 to form a seal. This situation is applicable to the filtration when there is a large amount of industrial waste and chemical waste in the sludge.

[0055] Embodiment 2

[0056] Into Figure 13 shown, the double-layer filter sleeve net structure 6 is inserted into the connection slot 53 to form a double-layer filtration of the coarse filter screen 61 and the fine filter screen 62. The first sealing cover plate 64 at one end of the double-layer filter sleeve net structure 6 is inserted into the corresponding positioning slot 51, and the plug-in opening 19 at the other end is closed by the second sealing plate 192. This situation is applicable to the filtration of simply visible industrial waste.

[0057] Embodiment 3

[0058] As Figure 14As shown, the single-layer filter screen structure 7 is inserted into the installation slot 52 to form a composite filter screen 71 for single-layer filtration. The second sealing cover plate 72 at one end of the single-layer filter screen structure 7 is inserted into the corresponding positioning slot 51, and the insertion opening 19 at the other end is closed by the first sealing plate 191. This situation is applicable to the filtration of sludge that simply contains chemical waste.

[0059] Embodiment 4

[0060] As Figure 15 shown, the insertion openings 19 on both sides of the feed frame 16 are respectively closed by the first sealing plate 191 and the second sealing plate 192 without filtration. This situation is applicable to the secondary treatment of sludge.

[0061] In summary, the principle of this embodiment is as follows: During use, the sewage discharged from the drainage end 12 of the plastic manufacturing equipment enters the drainage pool 1 and flows into the pressure filtration device 2 for solid-liquid separation. The separated liquid is pneumatically pumped out by the diaphragm pump water treatment component 3 and flows through the purified water end 31 to the circulating water pool 11. During the flow to the circulating water pool 11, the suspended particles are settled by the drip irrigation water treatment structure 4, while the separated sludge and solid impurities enter the sludge treatment device 5 for filtration and drying, avoiding environmental pollution and reducing impurities such as lubricating powder in the circulating water.

[0062] Among them, the sludge treatment device 5 is provided with an installation slot 52 and a connection slot 53 on the inner wall of the feed frame 16 respectively for installing the single-layer filter screen structure 7 and the double-layer filter sleeve structure 6. According to the different impurities contained in the sludge, the filter screens are stacked and combined or installed unidirectionally to effectively filter harmful substances in the sludge. And the filtered sludge is dried by the heater 4 in cooperation with the steam trap to form dry powder, which is convenient for treatment and reduces the harmful impurities in the powder.

[0063] When the pressure filtration device 2 is being rinsed, the cleaning agent is introduced into the filter cloth through the cleaning liquid inlet pipe 31, and then the pressing plate 12 applies a squeezing force to the filter cloth to achieve wetting of the filter cloth. Then, water flow is introduced through the flushing water inlet pipe 32 for flushing, and the sewage after flushing enters the cleaning drainage pipe 41 and is discharged to the sludge treatment device 5; when pressure filtration is carried out, the cleaning drainage pipe 41 is closed and the filtrate discharge pipe 42 is opened. The filtrate is guided to the filtrate discharge pipe 42, and it can be selectively discharged from the filtrate discharge pipe 42 to the diaphragm pump water treatment component 3 for starting suction, or the drainage valve 45 is opened to empty one by one, so that the filtrate flows into the filtrate receiving frame and then is discharged to the outside.

[0064] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0065] Although terms such as drainage pool 1, circulating water pool 11, drainage end 12 of plastic manufacturing equipment, water inlet end 13 of plastic manufacturing equipment, pressure filtration device 2, feeding crossbeam 21, thrust plate 211, pressing plate 212, moving pulley 2121, discharge hole 213, frame filtering structure 22, sliding support part 221, flexible filter frame pressing plate 222, filter cloth 223, feeding channel 224, liquid inlet structure 23, cleaning liquid inlet pipe 231, washing water inlet pipe 232, discharge channel 233, feeding flange 234, liquid outlet assembly 24, cleaning drain pipe 241, filtrate discharge pipe 242, diversion pipe 243, drainage pipe 244, drainage valve 245, sewage discharge pipe 246, sewage discharge valve 247, diversion flange 248, hydraulic drive assembly 25, hydraulic drive cylinder 251, cylinder seat 252, liquid receiving frame 26, support plate frame 261, fixed support 262, diaphragm pump water treatment assembly 3, clean water end 31, sewage discharge end 32, drip irrigation water treatment structure 4, clean water outlet pipe 41, drip irrigation interface 42, alum drip irrigation pipe 43, drip irrigation tank 44, regulating valve 45, feeding port 46, sludge treatment device 5, sludge water tank 51, water tank frame 511, sewage outlet 512, guide pipe 513, conveying pipe 514, flow regulating valve 515, feeding frame 516, material leakage part 517, feeding port 518, plugging opening 519, first sealing plate 5191, second sealing plate 5192, drying box 52, water conveying pipe 521, discharge pipe 522, guiding and positioning slot 523, embedding slot 524, plug-in type heat conducting component 53, box body positioning frame 531, positioning frame plate 532, guiding and positioning insertion strip 5321, heat conducting support plate 533, drying convex part 5331, support plate frame 534, heater 54, plug-in type filter screen mechanism 55, positioning slot 551, installation slot 552, connection slot 553, double-layer filter sleeve net structure 56, coarse filter screen 561, fine filter screen 562, plugging gap 563, first sealing cover plate 564, first plugging connection part 565, single-layer filter screen structure 57, composite filter screen 571, second sealing cover plate 572, second plugging connection part 573 are used more frequently in this text, it does not exclude the possibility of using other terms. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A plastic foam circulating water treatment system, comprising a drainage tank (1) for receiving sewage and a circulating water tank (11) for receiving treated purified water. The drainage tank (1) is connected to the drainage end (12) of the plastic processing equipment, and the circulating water tank (11) is connected to the water inlet end (13) of the plastic processing equipment, characterized in that, The described drainage pool (1) is connected to a pressure filtration device (2), and the output end of the pressure filtration device (2) is connected to a diaphragm pump water treatment component (3). The purified water end (31) of the diaphragm pump water treatment component (3) is provided with a drip irrigation water treatment structure (4) connected to a circulation water pool (11), and the sewage discharge end (32) of the diaphragm pump water treatment component (3) is connected to a sludge treatment device (5); the drip irrigation water treatment structure (4) includes a purified water outlet pipe (41) connected to the purified water end (31). A drip irrigation interface (42) is provided on the purified water outlet pipe (41), and an alum drip irrigation pipe (43) is inserted into the drip irrigation interface (42). One end of the alum drip irrigation pipe (43) far from the drip irrigation interface (42) is connected to a drip irrigation tank body (44), and a regulating valve (45) for adjusting the drip irrigation flow rate is provided on the drip irrigation pipe body. A feeding port (46) is provided on the drip irrigation tank body (44); the pressure filtration device (2) includes a feeding cross beam (21). A thrust plate (211) is provided at one end of the feeding cross beam (21), and a pressing plate (212) is provided at the other end. A number of frame filtering structures (22) with the same specifications are slidably arranged on the feeding cross beam (21), and a liquid inlet structure (23) is arranged through the upper side of the frame filtering structure (22). A liquid outlet assembly (24) is provided at the lower end of the frame filtering structure (22). A hydraulic driving assembly (25) capable of driving the frame filtering structures (22) to squeeze each other so that the liquid in the frame filtering structures (22) is discharged to the liquid outlet assembly (24) is provided on one side of the pressing plate (212); a liquid receiving frame body (26) is provided at the bottom of the frame filtering structure (22), and sliding support parts (221) are provided at both ends of the frame filtering structure (22). The sliding support parts (221) are slidably arranged on a support plate frame (261), and a fixed support (262) is provided at the bottom of the thrust plate (211). Both ends of the pressing plate (212) are arranged on the sliding support parts (221) through moving pulleys (2121); the frame filtering structure (22) includes a flexible filter frame pressing plate (222). A filter cloth (223) is provided in the middle of the flexible filter frame pressing plate (222), and the filter cloth (223) is a multi-layer connection structure. A feeding channel (224) through which the feeding cross beam (21) can pass is provided on the filter cloth (223), and a number of discharge holes (213) communicating with the inner cavity of the filter cloth (223) are circumferentially provided on the feeding cross beam (21).

2. The plastic foam circulating water treatment system according to claim 1, wherein The described sludge treatment device (5) includes a sludge water tank (51) connected to the sewage discharge end (32) of the diaphragm pump water treatment component (3). The sludge water tank (51) is positioned and supported by a water tank frame (511), and a sewage outlet (512) is provided on the lower side of the sludge water tank (51). The sewage outlet (512) is connected to a drying box body (52) through a material guide pipe (513). One side of the drying box body (52) is provided with a drain pipe connected to a steam trap, and the other end has a discharge pipe (522). The drying box body (52) is positioned by a plug-in heat conduction component (53) arranged at the bottom, and the bottom of the plug-in heat conduction component (53) is connected to a heater (54). The drying box body (52) and the sludge water tank (51) are arranged in a staggered manner, and a plug-in filter screen mechanism (55) is detachably arranged in the middle of the sludge water tank (51).

3. The plastic foam circulating water treatment system according to claim 1, characterized in that, The described liquid inlet structure (23) includes a cleaning liquid inlet pipe (231) and a flushing water inlet pipe (232). One end of the cleaning liquid inlet pipe (231) and the flushing water inlet pipe (232) is connected to the thrust plate (211), and the other end penetrates through the upper side of the flexible filter frame pressing plate (222). A discharge channel (233) is provided at the position where the cleaning liquid inlet pipe (231) and the flushing water inlet pipe (232) are in contact with the flexible filter frame pressing plate (222). The discharge channel (233) is communicated with the inner cavity of the filter cloth (223). The ends of the cleaning liquid inlet pipe (231) and the flushing water inlet pipe (232) far from the thrust plate (211) are in a closed state, and a feed flange (234) is provided at the other end.

4. A plastic foam circulating water treatment system according to claim 1, characterized in that, The described liquid outlet assembly (24) includes a cleaning drain pipe (241) and a filtrate discharge pipe (242). The cleaning drain pipe (241) and the filtrate discharge pipe (242) respectively penetrate through the flexible filter frame pressing plate (222) and are located below the filter cloth (223). The inner cavity of the filter cloth (223) is connected to the cleaning drain pipe (241) and the filtrate discharge pipe (242) respectively through a diversion pipe (243). A diversion pipe (244) is provided on one side of the filtrate discharge pipe (242) and inside the flexible filter frame pressing plate (222). One end of the diversion pipe (244) extends out of the flexible filter frame pressing plate (222) and a diversion valve (245) is provided at the end. A sewage discharge pipe (246) is provided on one side of the cleaning drain pipe (241) and inside the flexible filter frame pressing plate (222), and one end of the sewage discharge pipe (246) extends out of the flexible filter frame pressing plate (222) and a sewage discharge valve (247) is provided at the end. The ends of the cleaning drain pipe (241) and the filtrate discharge pipe (242) are in a closed state, and the other end can be opened and closed through a diversion flange (248) arranged on one side of the thrust plate (211). The hydraulic drive assembly (25) includes a hydraulic drive cylinder (251). The hydraulic drive cylinder (251) is arranged between one ends of the sliding support part (221) through a cylinder seat (252). The output shaft of the hydraulic drive cylinder (251) is connected to the pressing plate (212).

5. The plastic foam circulating water treatment system according to claim 2, characterized in that, A feed pipe (514) is provided at the sewage outlet (512) at the bottom of the drying box body (52). A flow regulating valve (515) is provided on the feed pipe (514), and the feed pipe (514) is connected to the drying box body (52) through the above-mentioned guide pipe (513). The upper end of the sludge water tank (51) has a feed frame (516). The lower end of the feed frame (516) is connected to a funnel-shaped leakage part (517) with an oil connection. The upper end of the feed port has a feed inlet (518). The above-mentioned sewage outlet (512) is arranged at the bottom of the leakage part (517). Both sides in the middle of the sludge water tank (51) have plugging openings (519) that are interconnected and located on the same axis. The plug-in type filter screen mechanism (55) can be detachably plugged into the plugging openings (519).

6. The plastic foam circulating water treatment system according to claim 5, characterized in that, The plug-in type filter screen mechanism (55) includes a double-layer filter sleeve structure (56) inserted into the feed frame (516) from the plugging opening (519) on one side in the middle of the sludge water tank (51), and a single-layer filter screen structure (57) is plugged on the other side in the middle of the sludge water tank (51). The single-layer filter screen structure (57) is plugged in the middle of the double-layer filter sleeve structure (56). The double-layer filter sleeve structure (56) includes a coarse filter screen (561) and a fine filter screen (562) arranged in parallel up and down. There is a plugging gap (563) between the coarse filter screen (561) and the fine filter screen (562). One end of the coarse filter screen (561) and the fine filter screen (562) is fixedly connected with a first sealing cover plate (564). The upper and lower ends of the first sealing cover plate (564) respectively have first plugging connection parts (565). The single-layer filter screen structure (57) includes a composite filter screen (571) arranged horizontally. A second sealing cover plate (572) is provided at one end of the composite filter screen (571). Second plugging connection parts (573) are provided at both ends of the second sealing cover plate (572). The position of the composite filter screen (571) is arranged corresponding to the plugging gap (563).

7. The plastic foam circulating water treatment system according to claim 6, characterized in that, On both sides of the middle of the sludge water tank (51), positioning slots (551) for inserting the first plug connection part (565) and the second plug connection part (573) are provided above and below the plugging openings (519). The plugging openings (519) on both sides of the middle of the sludge water tank (51) are respectively closed by a first sealing plate (5191) and a second sealing plate (5192). An installation slot (552) for inserting the composite filter screen (571) is provided on the inner wall of the feed frame (516). Connection slots (553) for inserting the coarse filter screen (561) and the fine filter screen (562) are provided above and below both sides of the installation slot (552); The plug-in type heat conduction component (53) includes a box body positioning frame (531). Both ends of the box body positioning frame (531) are open, and both sides have vertically arranged positioning frame plates (532). A heat conduction support plate (533) is provided at the bottom of the positioning frame plate (532), and support plates (534) are provided on both sides of the bottom of the box body positioning frame (531); Guide positioning insertion strips (5321) are axially provided on the inner wall of the positioning frame plate (532). Guide positioning slots (523) corresponding to the guide positioning insertion strips (5321) are provided on the outer walls of both sides of the drying box body (52). A number of drying convex parts (5331) are provided on the upper end surface of the heat conduction support plate (533), and a number of embedding grooves (524) corresponding to the drying convex parts (5331) are provided at the bottom of the drying box body (52).

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