Wastewater purification device for paper pulp production

Abstract

The utility model belongs to the field of wastewater purification devices, and particularly relates to a paper pulp production wastewater purification device which comprises a base, a supporting frame is fixed to the upper end of the base, a wastewater pipe is installed at the upper end of the supporting frame, two drainage connectors are fixedly installed at the lower end of the wastewater pipe in a penetrating mode, and the wastewater pipe can convey wastewater generated by paper pulp. A switching mechanism is arranged at the upper end of the base, the switching mechanism comprises two hydraulic cylinders, telescopic piston rods are arranged in the hydraulic cylinders, and a lifting table is fixed to the upper ends of the two piston rods. By arranging the four filtering mechanisms capable of rotating and switching, when two currently-used filter cartridges are blocked, the filter cartridges can quickly rotate by 90 degrees and are switched to two standby filter cartridges, it is ensured that wastewater is continuously filtered, the height of the lifting platform driven by the hydraulic cylinder can be accurately adjusted, separation or butt joint of the drainage connector and the water inlet connector is facilitated, and the filtering efficiency is remarkably improved; and shutdown cleaning time is reduced.

Description

TECHNICAL FIELD

[0001] The present scheme belongs to the field of wastewater purification devices, and particularly relates to a wastewater purification device for pulp production. BACKGROUND

[0002] A large amount of wastewater is generated during the production of pulp, and these wastewaters usually contain various pollutants, including organic matter, suspended solids, chemicals, and heavy metals. Treating these wastewaters is a very important part of the pulp production process to reduce the impact on the environment.

[0003] According to the search, in the utility model application patent with the application publication number CN221254340U, a pulp wastewater purification device is disclosed, which comprises a box body, an installation plate is fixedly welded to the upper end of the box body, the upper end of the installation plate is provided with an opening, and a positioning plate is fixedly welded to the inner wall of the installation plate. The present utility model supports and connects the filter screen cover through the cylinder frame and installs it in the installation plate as a whole, the filter screen cover in the form of a cylinder has a larger filtering area, when wastewater is introduced into the filter screen cover, the inclined filter screen cover concentrates the large particles of suspended matter at the bottom end, and the motor drives the driving gear to rotate, thereby driving the matching gear ring to rotate, allowing the cylinder frame and the filter screen cover to rotate as a whole, allowing the rolling filter screen cover to perform omnidirectional filtration, while avoiding the blockage of the filter screen holes on a single side by large particles of suspended matter, and the filter screen cover at the upper end allows the filtered suspended matter to roll and accumulate at the bottom end, facilitating concentration, and the filter screen cover at a higher position can cooperate with gravity to perform rapid filtration.

[0004] At present, a large amount of wastewater is generated during the production of pulp, and these wastewaters contain a large amount of flocculent impurities. When treating pulp wastewater, it is necessary to filter out such flocculent impurities through a filtering structure, but most filtering equipment uses a single filtering mechanism to achieve a filtering process by allowing wastewater to contact the filter screen and then discharging it. However, due to the high adhesion of these flocculent impurities to the filter screen, the cleaning process is time-consuming, and if only a single filter screen is used as the filtering point of the filtering equipment, it is necessary to wait for a long time during the cleaning of flocculent impurities, which greatly reduces the efficiency of wastewater treatment. SUMMARY

[0005] The purpose of the present scheme is to provide a wastewater purification device for pulp production to solve the problem of easy adhesion of flocculent impurities to the filter structure and long waiting time for cleaning in the existing technology during the treatment of pulp wastewater.

[0006] In order to achieve the above object, the paper pulp production wastewater purification device comprises a base, the upper end of the base is fixed with a support frame, the upper end of the support frame is provided with a wastewater pipe, the lower end of the wastewater pipe is fixedly provided with two drainage interfaces, the wastewater pipe can transport the wastewater generated in the paper pulp production, and the wastewater can be discharged through the drainage interface, the upper end of the base is provided with a switching mechanism, the switching mechanism comprises two hydraulic cylinders, the inside of the hydraulic cylinder is provided with a piston rod for extension and retraction, the upper end of the two piston rods is fixed with a lifting platform, the height of the lifting platform can be adjusted through the extension and retraction of the piston rod of the hydraulic cylinder, so that the height can be adjusted when the outer cylinder is switched, so that the drainage interface can be separated from the water inlet interface, a center hole is formed in the center position of the lifting platform, a multi-way interface is arranged in the center hole, the multi-way interface is divided into four vertical upward interfaces and one vertical downward interface, any one of the vertical upward interfaces can be connected with the corresponding connection interface, so that the filtered water can be uniformly discharged into the vertical downward interface and discharged together, a rotating table is arranged above the lifting platform, two connecting rods are fixedly arranged at the two ends of the rotating table, a wheel frame is fixedly arranged at the lower end of the connecting rod, a roller is rotatably arranged on the wheel frame, the rotating table can slide in the slide based on the roller, the position of the rotating table can be limited when the rotating table rotates, a slide in the form of a ring is fixedly arranged on the outer wall of the rotating table, the roller is rotatably arranged on the inner wall of the slide, a plurality of equidistantly distributed supporting rods are fixedly arranged at the lower end of the lifting platform, a ball seat is fixedly arranged at the lower end of the supporting rod, a ball is rotatably arranged in the ball seat, the ball is rotatably arranged on the upper end surface of the lifting platform, the ball is made of solid stainless steel material, and the ball and the lifting platform are rotatably arranged, so that the supporting rod can play an auxiliary supporting effect when the rotating table rotates.

[0007] The principle of the scheme is that the wastewater pipe is used to transport the wastewater generated in the paper pulp production to the drainage interface, and the switching mechanism is used to realize multi-channel filtration, after the drainage interface is connected with the water inlet interface of the filtering mechanism, the wastewater first enters the filter cartridge in the outer cylinder, the filter cartridge filters the large flocculent impurities in the wastewater by physical interception, the wastewater filtered initially flows into the connection interface through the water outlet interface, and then is filtered again by the built-in filter screen to further remove small flocculent impurities, the filtered clean water is uniformly discharged through the vertical downward interface of the multi-way interface, the design of the two drainage interfaces allows simultaneous processing of double wastewater, and the rotation use of the four filtering mechanisms ensures the continuity of the filtration, when the efficiency of a filter cartridge is reduced due to the accumulation of impurities, the rotating table can be rotated by 90 degrees to switch to another set of filtering mechanisms distributed at the two ends along the same straight line, so that the production interruption is avoided, and the saturated filter cartridge and filter screen are convenient to clean.

[0008] The technical effect of the scheme is that by setting four rotatable switching filter mechanisms, when the currently used two filter cartridges are blocked, they can be quickly rotated by 90 degrees to switch to the standby two filter cartridges, ensuring uninterrupted wastewater filtration, the lifting platform driven by the hydraulic cylinder can accurately adjust the height, facilitating the separation or connection of the drainage interface and the water inlet interface, significantly improving the filtration efficiency and reducing downtime cleaning time.

[0009] The ball and slide structure also makes the rotating table rotate more smoothly, the support rod and the roller share the load, avoid deviation, the stainless steel ball reduces friction and prolongs the service life of the components, the multi-port interface collects clean water, the flange ensures the sealing of the interface, the overall structure has rigidity and flexibility, and meets the long-term high-frequency operation requirements.

[0010] Further, the rotating table is distributed with four equidistantly distributed filter mechanisms, the filter mechanism includes an interface, the interface is fixedly penetrated through the surface of the rotating table, the lower end of the interface is flange-connected with the vertically upward interface of the multi-port interface, the interface can play a transition effect, and the interface and the outer cylinder are cross-distributed.

[0011] Further, the upper end of the interface is provided with an outer cylinder, the lower end of the outer cylinder is fixedly penetrated with a water outlet interface, the water outlet interface and the interface are slidably inserted and connected with each other, the inner part of the outer cylinder is fixedly provided with a filter cartridge, and the filter cartridge can filter large flocculent impurities in wastewater.

[0012] Further, the upper end of the outer cylinder is fixedly covered with a cover plate, the center position of the cover plate is fixedly penetrated with a water inlet interface, the drainage interface and the water inlet interface are slidably inserted and connected, the drainage interface is provided with two and is distributed on the same straight line, and is connected with the two water inlet interfaces which are also distributed on the same straight line below, if the currently used filter mechanism filters slowly, the rotating table can be rotated to switch the position, so that the water inlet interface and the drainage interface in the new position can be reconnected for filtering, and the filter mechanism switched away can clean the adhered flocculent impurities in the filter cartridge inside the outer cylinder, thereby saving time and maintaining the continuity of wastewater filtration.

[0013] Further, the inner part of the interface is fixedly provided with a limiting block, the upper end of the limiting block is fixedly provided with a plate frame which is slidably sleeved with the interface, the inner side of the plate frame is fixedly embedded with a filter screen, and the limiting block can ensure that the plate frame is located at the depth of the interface, and the filter screen can filter small flocculent impurities.

[0014] Further, the outer wall of the interface is fixedly provided with a bracket at both ends, the upper end of the bracket is abutted with the bottom of the outer cylinder, the upper end of the bracket is fixedly provided with a threaded column, the outer wall of the outer cylinder is fixedly provided with a sleeve ring which is slidably sleeved with the threaded column through a support, and the bracket can be used for auxiliary support after the outer cylinder is erected on the interface.

[0015] Further, the upper end of the threaded column is threadedly connected with a threaded cap, the end face of the threaded cap is closely arranged with the end face of the collar, the outer wall of the threaded cap is fixed with a knob, the threaded cap is rotated through the knob, the threaded cap is threadedly installed with the threaded column, thereby, the connection position of the outer cylinder and the connection interface is locked and fixed, and the installation mode is convenient for disassembly, the filter screen is cleaned synchronously when the filter cartridge is disassembled and cleaned, and the operation is simple and fast. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the embodiment of the utility model.

[0017] Figure 2 It is an enlarged schematic view of A of the embodiment of the utility model.

[0018] Figure 3 It is a top view distribution schematic view of the multi-way connection interface of the embodiment of the utility model.

[0019] Figure 4 It is a schematic view of the internal structure of the outer cylinder and the connection interface of the embodiment of the utility model.

[0020] The following is further detailed through specific embodiments:

[0021] The reference signs in the drawings of the specification include: base 1, support frame 11, wastewater pipe 12, drainage interface 13, switching mechanism 2, hydraulic cylinder 20, lifting platform 21, center hole 22, multi-way connection interface 23, connecting rod 24, wheel frame 25, roller 26, support rod 27, ball seat 28, ball 29, rotating platform 210, slide 211, filtering mechanism 3, connection interface 30, outer cylinder 31, water outlet interface 32, cover plate 33, water inlet interface 34, filter cartridge 35, limiting block 36, plate frame 37, filter screen 38, bracket 3001, threaded column 3002, collar 3003, threaded cap 3004. DETAILED DESCRIPTION

[0022] The embodiment is basically as shown in the accompanying drawings. Figures 1-4The paper shows: a wastewater purification device for pulp production, including base 1, the upper end of base 1 is fixed with support frame 11, the upper end of support frame 11 is installed with wastewater pipe 12, the lower end of wastewater pipe 12 is fixedly installed with two drainage interfaces 13, wastewater pipe 12 can transport wastewater produced by pulp, and the wastewater can be discharged through drainage interface 13, the upper end of base 1 is provided with switching mechanism 2, switching mechanism 2 includes two hydraulic cylinders 20, the inside of hydraulic cylinder 20 is provided with a piston rod for extension and retraction, the upper end of the two piston rods is fixed with lifting platform 21, the height of lifting platform 21 can be adjusted through the extension and retraction of the piston rod of hydraulic cylinder 20, so that the height can be adjusted when the outer cylinder 31 is switched, so that the drainage interface 13 can be separated from the water inlet interface 34, the central position of lifting platform 21 is provided with central hole 22, the inside of central hole 22 is provided with multi-way interface 23, multi-way interface 23 is divided into four vertical upward interfaces and one vertical downward interface, multi-way interface 23 is only fixed when connected with connection interface 30, and the central hole 22 on lifting platform 21 is provided in a penetrating and non-contact manner, the vertical downward interface can be rotated and sealedly connected with the pipeline outside through the rotary joint, the rationality of the structure and the smoothness of wastewater treatment are ensured, any vertical upward interface can be connected with the corresponding connection interface 30, so that the filtered water can be uniformly discharged into the vertical downward interface and discharged together when the filtered water is discharged, rotating table 210 is arranged above lifting platform 21, two ends of rotating table 210 are respectively fixed with connecting rod 24, the lower end of connecting rod 24 is fixed with wheel frame 25, and roller 26 is rotatably installed on wheel frame 25, rotating table 210 can slide in slide 211 based on roller 26, the multiple position limits of rotating table 210 during rotation are realized, circular slide 211 is fixedly sleeved on the outer ring wall of rotating table 210, roller 26 and the inner wall surface of slide 211 are rotatably matched, the lower end of lifting platform 21 is fixed with a plurality of equidistantly distributed supporting rods 27, the lower end of supporting rod 27 is fixed with ball seat 28, ball 29 is rotatably arranged in ball seat 28, ball 29 and the upper end surface of lifting platform 21 are rotatably arranged, ball 29 is made of solid stainless steel material, and the supporting rod 27 can realize the effect of auxiliary support when rotating table 210 rotates through the rolling of ball 29 and lifting platform 21.

[0023] As shown in the accompanying drawings Figure 1 , Figure 2 , Figure 4As shown, the rotating table 210 is distributed with four equidistantly distributed filtering mechanisms 3, the filtering mechanism 3 comprises a connecting port 30 fixedly penetrating the surface of the rotating table 210, the lower end of the connecting port 30 is flange-connected with the vertically upward port of the multi-way port 23, the connecting port 30 can play a transitional effect, the connecting port 30 is cross-distributed with an outer cylinder 31, the outer cylinder 31 is arranged above the connecting port 30, the lower end of the outer cylinder 31 is fixedly penetrated with a water outlet port 32, the water outlet port 32 is slidingly inserted and connected with the connecting port 30, the inner part of the outer cylinder 31 is fixedly provided with a filter cylinder 35, the filter cylinder 35 can filter large flocculent impurities in wastewater, the upper end of the outer cylinder 31 is fixedly covered with a cover plate 33, the center position of the cover plate 33 is fixedly penetrated with a water inlet port 34, the drainage port 13 is slidingly inserted and connected with the water inlet port 34, the drainage port 13 is provided with two and is distributed on the same straight line, and is connected with the two water inlet ports 34 arranged on the same straight line below, if the filtering mechanism 3 currently in use is slow, the rotating table 210 can be rotated by 90 degrees to switch, so that the water inlet port 34 in the new position can be re-connected with the drainage port 13 for filtering use, and the filter cylinder 35 in the outer cylinder 31 of the switched filtering mechanism 3 can be cleaned of adhered flocculent impurities, thereby saving time and maintaining the continuity of wastewater filtration, the inner part of the connecting port 30 is fixedly provided with a limiting block 36, the upper end of the limiting block 36 is fixedly provided with a plate frame 37 slidingly sleeved with the connecting port 30, the inner side of the plate frame 37 is fixedly embedded with a filter screen 38, the limiting block 36 can ensure that the plate frame 37 is located at the depth of the connecting port 30, the filter screen 38 can filter small flocculent impurities, both ends of the outer wall of the connecting port 30 are fixedly provided with a bracket 3001, the upper end of the bracket 3001 is arranged in close contact with the bottom of the outer cylinder 31, the upper end of the bracket 3001 is fixedly provided with a threaded column 3002, the outer wall surface of the outer cylinder 31 is fixedly provided with a sleeve ring 3003 slidingly sleeved with the threaded column 3002 through a support, the bracket 3001 can be supported after being erected on the connecting port 30, the threaded column 3002 and the sleeve ring 3003 can be inserted to quickly position and connect the outer cylinder 31 and the connecting port 30, the upper end of the threaded column 3002 is threadedly connected with a threaded cap 3004, the end surface of the threaded cap 3004 is arranged in close contact with the end surface of the sleeve ring 3003, a knob is fixedly arranged on the outer wall of the threaded cap 3004, the threaded cap 3004 can be rotated through the knob to be threadedly connected with the threaded column 3002, thereby locking and fixing the connecting position of the outer cylinder 31 and the connecting port 30, and the installation mode is also convenient for disassembly, the filter screen 38 can be cleaned synchronously when the filter cylinder 35 is disassembled and cleaned, which is simple and fast.

[0024] The utility model discloses a specific implementation process as follows: this scheme is through waste water pipe 12 and is delivered to the drainage interface 13 with paper pulp production wastewater, and utilizes switching mechanism 2 to realize multichannel filtration, and after the drainage interface 13 is docked with the water inlet interface 34 of filter mechanism 3, wastewater first enters the filter cartridge 35 in the inside of outer tube 31, and the filter cartridge 35 filters the large flocculent impurities in wastewater through physical interception, and the wastewater after preliminary filtration flows into the connection interface 30 through the water outlet interface 32, and then is filtered again through the built-in filter screen 38, and small flocculent impurities are further removed, and the filtered clean water is uniformly discharged through the vertically downward interface of multichannel interface 23, and the design of two drainage interfaces 13 allows simultaneous processing of double-way wastewater, and the rotation of four filter mechanisms 3 ensures the continuity of filtration, when the efficiency of a filter cartridge 35 is reduced due to impurity accumulation, the rotating table 210 can be rotated 90 ° and switched to another set of filter mechanisms 3 distributed at the two ends along the same straight line, avoiding production interruption, and facilitating cleaning of the saturated filter cartridge 35 and filter screen 38.

[0025] The switching mechanism 2 of the scheme drives the lifting table 21 to lift through the hydraulic cylinder 20, realizes the quick separation or docking of the filter unit and the drainage interface 13, when it is necessary to switch the filter mechanism 3, the piston rod of the hydraulic cylinder 20 is retracted, drives the lifting table 21 to descend, makes the water inlet interface 34 separate from the drainage interface 13, then the rotating table 210 is rotated 90 ° under the cooperation of the roller 26 and the slide 211, aligns another set of standby filter mechanisms 3 with the drainage interface 13, the rolling design of the ball 29 and the support rod 27 reduces the rotating friction, ensures stable switching, and after the lifting table 21 is reset, the new water inlet interface 34 is docked with the drainage interface 13 again, and the filtering operation continues.

[0026] The filter mechanism 3 of the scheme adopts modular design, the outer tube 31 is quickly locked with the connection interface 30 through the bracket 3001, the threaded column 3002 and the collar 3003, the threaded cap 3004 is screwed, is screwed with the threaded column 3002, namely can fix the outer tube 31, and reverse operation can disassemble, and it is convenient to clean the filter cartridge 35 and the filter screen 38, and the limiting block 36 ensures that the filter screen 38 of the plate frame 37 is always in the reasonable position of the connection interface 30, avoiding filtration failure.

[0027] The above-mentioned is only the embodiment of the utility model, and the well-known specific structure and characteristics in the scheme are not described too much here. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, a number of deformations and improvements can be made, and these should also be regarded as the protection scope of the utility model, and these will not affect the effect and practicality of the utility model. The protection scope of the present application should be accurate according to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A device for purifying waste water from pulp production, comprising a base, characterized in that: The upper end of the base is fixed with a support frame, the upper end of the support frame is installed with a wastewater pipe, the lower end of the wastewater pipe is fixedly penetrated and installed with two drainage interfaces, the upper end of the base is provided with a switching mechanism, the switching mechanism comprises two hydraulic cylinders, the inside of the hydraulic cylinder is provided with a piston rod for extension and retraction, the upper end of the two piston rods is fixed with a lifting platform, the center position of the lifting platform is provided with a center hole, the inside of the center hole is penetrated and provided with a multi-way interface, the multi-way interface is divided into four vertical upward interfaces and one vertical downward interface, the upper end of the lifting platform is provided with a rotating table, the two ends of the rotating table are respectively fixed with a connecting rod, the lower end of the connecting rod is fixed with a wheel frame, the wheel frame is rotatably installed with a roller, the outer wall of the rotating table is fixedly sleeved with a circular ring type slide, the roller is rotatably matched with the inner wall surface of the slide, the lower end of the lifting platform is fixed with a plurality of equidistantly distributed support rods, the lower end of the support rod is fixed with a ball seat, the inside of the ball seat is rotatably provided with a ball, the ball is rotatably contacted with the upper end surface of the lifting platform, and the ball is made of solid stainless steel material.

2. A device for purifying waste water from pulp production according to claim 1, characterized in that The rotating table is distributed with four equidistantly distributed filtering mechanisms, and the filtering mechanism comprises a connecting interface which is fixedly penetrated on the surface of the rotating table, and the lower end of the connecting interface is flange-connected with the vertical upward interface of the multi-way interface.

3. A pulp production wastewater purification apparatus according to claim 2, characterized in that: The upper end of the connecting interface is provided with an outer cylinder, the lower end of the outer cylinder is fixedly penetrated with a water outlet, the water outlet and the connecting interface are slidably inserted and connected, and the inside of the outer cylinder is fixedly provided with a filter cylinder.

4. A pulp production wastewater purification apparatus according to claim 3, characterized in that: The upper end of the outer cylinder is fixedly covered with a cover plate, the center position of the cover plate is fixedly penetrated with a water inlet, and the drainage interface and the water inlet are slidably inserted and connected.

5. A paper pulp production wastewater purification apparatus according to claim 4, characterized in that: The inside of the connecting interface is fixedly provided with a limiting block, the upper end of the limiting block is fixedly sleeved with a plate frame which is slidably sleeved with the connecting interface, and the inside of the plate frame is fixedly embedded with a filter screen.

6. A pulp production wastewater purification apparatus according to claim 5, characterized in that: The outer wall of the connecting interface is fixedly provided with a bracket at both ends, the upper end of the bracket is abutted with the bottom of the outer cylinder, the upper end of the bracket is fixedly provided with a threaded column, the outer wall surface of the outer cylinder is fixedly provided with a sleeve ring which is slidably sleeved with the threaded column through a support.

7. A pulp production wastewater purification apparatus according to claim 6, characterized in that: The upper end of the threaded column is threadedly connected with a threaded cap, the end surface of the threaded cap is abutted with the end surface of the sleeve ring, and the outer wall of the threaded cap is fixedly provided with a knob.

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