Ultrafiltration equipment and kitchen wastewater treatment process

Abstract

The invention discloses ultrafiltration equipment and a kitchen wastewater treatment process, the ultrafiltration equipment comprises a rack, a plurality of joints fixedly connected to the rack, a plurality of filtering pipelines arranged on the rack, connecting pieces slidably connected to the two ends of the filtering pipelines, and transportation assemblies and clamping assemblies arranged in the filtering pipelines, the two ends of the filtering pipelines are connected with the joints through the connecting pieces in a matched mode; the filter pipeline can move on the rack, when the filter pipeline and the connector are staggered, the conveying assembly can convey a filter element in the filter pipeline to the outside of the pipeline, and the clamping assembly is used for fixing the filter element. By arranging the filtering pipeline capable of moving on the rack, the connecting piece of a specific structure, the conveying assembly and the clamping assembly, when the filter element is replaced, the filtering pipeline and the connector can be shifted, the conveying assembly can gradually move the filter element to the end of the filtering pipeline, the filter element can be conveniently removed and replaced, and the filter element replacement efficiency is improved. And the convenience and the efficiency of filter element replacement operation are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of sewage treatment, and in particular to an ultrafiltration device and a process for treating kitchen wastewater. Background Art

[0002] Most of the current sewage treatment ultrafiltration equipment adopts a long pipeline design structure, which aims to extend the contact time between sewage and filter elements, improve the filtering effect, and enhance the filtering level and accuracy with the help of a multi-stage filter element layout. There are many problems with the segmented placement of filter elements under this long pipeline configuration; for example, the long filter pipeline is winding in a limited space, and it is difficult for operators to reach deep into the filter element. Conventional tools are limited in operation, and it is difficult to inspect and maintain deep filter elements; moreover, the segmented filter elements are constrained by the pipeline, and they are tightly connected to each other and often accompanied by sealing and fixed structures. When removing the front filter element, it is necessary to be careful to avoid interference and damage to the subsequent sections. When removing the filter element located in the depth of the pipeline, it is necessary to overcome many obstacles, consuming a lot of manpower and time costs, and often need to disassemble many related pipeline components for auxiliary operations, which seriously affects the equipment operation and maintenance efficiency and overall operation time, increases the frequency of shutdown maintenance of sewage treatment plants, and weakens their treatment capacity and economic benefits. Summary of the invention

[0003] The purpose of this application is to provide an ultrafiltration device and a kitchen wastewater treatment process in order to increase the speed of filter element replacement.

[0004] In the first aspect, the present application provides an ultrafiltration device using the following technical solution: An ultrafiltration device comprises a frame, a plurality of joints fixedly connected to the frame, a plurality of filter pipes arranged on the frame, connectors slidably connected to both ends of the filter pipes, a transport assembly and a clamping assembly arranged in the filter pipes, wherein both ends of the filter pipes are matched with the joints through the connectors, the filter pipes can be moved on the frame, and when the filter pipes are offset from the joints, the transport assembly can transport the filter element in the filter pipe to the outside of the pipe, and the clamping assembly is used for fixing the filter element.

[0005] Preferably, the transport assembly includes a first connecting rod, a plurality of first rotating blocks rotatably connected to the inner wall of the filter pipe, and two first levers fixedly connected to the first rotating blocks, the first rotating blocks are provided with a first slide groove, the first connecting rod is slidably connected to the first slide groove, the installation positions of the two first levers are symmetrical to the first slide groove, and the two first levers are both in contact with the filter element.

[0006] Preferably, the inner walls at both ends of the filter pipe are fixedly connected to a support frame, the first connecting rod passes through the support frame, the two ends of the first connecting rod are fixedly connected to a first limit platform, a first spring is provided between the first limit platform and the support frame, the first spring maintains the position of the first connecting rod, the connecting piece is slidably connected to a first intermediate rod slidably connected to the first connecting rod, and the first intermediate rod is connected to the first connecting rod by a first tension spring.

[0007] Preferably, the clamping assembly includes a connecting plate connecting the support frames at both ends, a clamping rod that passes through and is slidably connected to the connecting plate, a clamping plate fixedly connected to the end of the clamping rod, a second rotating block rotatably connected to the clamping rod, a second lever fixedly connected to the second rotating block, and a second connecting rod that passes through and is slidably connected to the support frame, the second rotating block is provided with a second sliding groove, the second connecting rod is slidably connected to the second sliding groove, the installation positions of the two second levers are symmetrical about the second sliding groove, the end of the second lever is provided with a roller that abuts against the connecting plate, a pre-tightening spring is provided between the clamping plate and the connecting plate, and the pre-tightening spring forces the clamping plate toward the filter element.

[0008] Preferably, the second connecting rod is provided with a second limiting platform, a second spring is provided between the second limiting platform and the support frame, the second spring positions the second connecting rod, and the first connecting rod is fixedly connected to the second connecting rod.

[0009] Preferably, the connecting piece is provided with an annular groove, the annular groove is clamped with an annular block, the annular block is fixedly connected with a pull rod, the filter pipe is fixedly connected with a guide ring, the pull rod passes through the guide ring, the filter pipe is fixedly connected with a fixed block, a slide rail is provided on the frame, the slide rail is slidably connected to the fixed block, the fixed block is slidably connected with a third connecting rod, both ends of the third connecting rod pass through the fixed block, the third connecting rod is slidably connected to the pull rod, and the end of the third connecting rod is connected to the pull rod through a second tension spring.

[0010] Preferably, the third connecting rod is fixedly connected with a third limit platform at both ends, a third spring is provided between the third limit platform and the fixed block, the third spring maintains the position of the third connecting rod, the pull rod sleeve is provided with a fourth spring, the fourth spring is located between the annular block and the guide ring, the fourth spring maintains the position of the pull rod, the fixed block is fixedly connected with the first motor, the output end of the first motor is fixedly connected with a half gear, and the third connecting rod is provided with a rack meshing with the half gear.

[0011] Preferably, an annular worm gear is installed on the side surface of the connecting member, a worm that can mesh with the annular worm gear is installed on the frame, a second motor that drives the worm to rotate is installed on the frame, a gear ring is fixedly connected to the side surface of the connecting member, a driving gear that meshes with the gear ring is installed on the frame, and a third motor that provides power to the driving gear is installed on the frame.

[0012] Preferably, the connecting piece is provided with a stepped portion, the stepped portion is provided with an annular rubber, the support frame is fixedly connected to the first barrel ring, the first barrel ring is threadedly connected to the second barrel ring, the second barrel ring is fixedly connected to the annular rubber, and the connecting piece is key-connected to the annular rubber.

[0013] In the second aspect, the present application provides a process for treating kitchen wastewater, which adopts the following technical solution: A process for treating kitchen wastewater comprises a regulating tank, an anaerobic tank, a snail stacking machine, a biochemical tank, an ultrafiltration device, and a coagulation sedimentation unit. First, kitchen wastewater flows into the regulating tank for pretreatment. After the pretreatment, the wastewater flows into the anaerobic tank. Organic matter in the wastewater is decomposed by microorganisms. The anaerobic treatment will produce a large amount of sludge. The wastewater is desludged by the snail stacking machine. The desludged wastewater flows into the biochemical tank. The sludge is transported out. The biochemical tank further decomposes the organic matter in the wastewater. The sludge produced by the decomposition is transported to the snail stacking machine. The wastewater in the biochemical tank flows into the ultrafiltration device for ultrafiltration. The filtered water flows into the coagulation sedimentation unit. The sludge is transported to the snail stacking machine through the biochemical tank. The sludge is further purified by the coagulation sedimentation unit and discharged. Unqualified produced water flows back to the regulating tank.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a filter pipe that can be moved on the rack and a connector, a transport assembly and a clamping assembly with a specific structure, the filter pipe and the joint can be offset when the filter element is replaced. The transport assembly can gradually move the filter element to the end of the filter pipe, which is convenient for removing and replacing the filter element, and effectively improves the convenience and efficiency of the filter element replacement operation; 2. The reasonable arrangement of the first rotating block in the transport component and the V-shaped structure design of the first lever enable the filter element to be transported step by step by simply rotating the first lever back and forth. The first lever can quickly detach from the filter element when it is rotated and reset, preventing the filter element from moving due to the reset, thus ensuring the high efficiency and accuracy of the filter element transportation. 3. The clamping assembly uses a pre-tightening spring to clamp the filter element with the clamping plate, maintaining the filter element in a stable position during transportation and normal processes. In addition, through the linkage of the second connecting rod and related components, the clamping plate can flexibly control the locking and unlocking of the filter element, further enhancing the stability and reliability of the filter element fixation.

[0015] 4. The connection design between the connector and each component is ingenious. For example, the circular clamping between the annular groove and the annular block effectively disperses stress and prevents the pull rod from falling off; the pull rod passes through the guide ring to ensure the accuracy of its movement axis; the elastic connection system formed by the third connecting rod and the pull rod and the setting of each spring enhances the elastic buffering capacity of the entire structure, making the connection of each component more stable and the operation more stable.

[0016] 5. The cooperation of the annular rubber, the first barrel ring and the second barrel ring at the connecting piece, when the second motor rotates forward, can achieve the sealing of the connection between the connecting piece and the joint and the restriction of the movement of the filter pipe, which provides a good sealing environment and stable operating conditions for related operations during the filter element replacement process, and helps to ensure the safety and stability of the overall operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is an assembly diagram of the filter pipe, the connector and the joint in Example 1 of the present application; Figure 3 This application Figure 2 Schematic diagram of the AA structure; Figure 4 This application Figure 3 Schematic diagram of the BB structure; Figure 5 This application Figure 4 A partial enlarged view of point a in the middle; Figure 6 This application Figure 3 Schematic diagram of CC structure; Figure 7 This application Figure 6 A partial enlarged view of point b in the middle; Figure 8 This application Figure 4 A cut-off diagram of ; Fig. 9 This application Figure 8 A partial enlarged view of point c in the middle; Fig.10 This is the process flow chart of restaurant wastewater treatment in this application.

[0018] Explanation of the reference numerals: 1. frame; 11. slide rail; 12. worm; 13. second motor; 14. annular worm gear; 15. third motor; 16. gear ring; 2. joint; 3. connector; 31. annular slide groove; 32. annular groove; 33. step portion; 4. filter pipe; 41. support frame; 42. connecting plate; 43. second barrel ring; 44. annular rubber; 45. first barrel ring; 5. transport assembly; 51. first connecting rod; 52. first rotating block; 521. first slide groove; 522. first lever; 53. first limit table; 54. first spring; 55. first intermediate rod; 56. connection Block; 57, first tension spring; 6, clamping assembly; 61, second connecting rod; 62, second rotating block; 621, second lever; 622, second slide groove; 623, roller; 63, clamping plate; 64, preload spring; 65, second limit platform; 66, second spring; 67, clamping rod; 7, clean water pipeline; 71, through hole; 8, filter element; 9, fixed block; 91, first motor; 92, third connecting rod; 921, third limit platform; 922, rack; 93, half gear; 94, third spring; 95, pull rod; 96, annular block; 97, fourth spring; 98, second tension spring; 99, guide ring. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 -Attached Fig.10 This application is described in further detail.

[0020] The embodiment of the present application discloses an ultrafiltration device.

[0021] Example 1, reference Figure 1 , Figure 2 and Figure 3 , an ultrafiltration device, comprising a frame 1, a plurality of joints 2 fixedly connected to the frame 1, a plurality of filter pipes 4 arranged on the frame 1, connectors 3 slidably connected to both ends of the filter pipes 4, a transport assembly 5 and a clamping assembly 6 arranged in the filter pipe 4, a plurality of joints 2 are arranged on the upper and lower sides of the frame 1, the joints 2 are connected with an outlet pipe and a plurality of transport pipes, the filter pipe 4 is provided with a clean water pipe 7 that can be communicated with the outlet pipe, the clean water pipe 7 is provided with a plurality of through holes 71 communicating with the inside of the filter pipe 4, a filter element 8 is sleeved on the clean water pipe 7, the sewage enters the clean water pipe 7 after being filtered by the filter element 8, and is transported away from the outlet pipe; when the filter element 8 needs to be replaced, the connector 3 assembly is disconnected from the joint 2, the filter pipe 4 will move on the frame 1, so that the filter pipe 4 and the joint 2 are offset, which facilitates the removal of the filter element 8, the transport assembly 5 will gradually move the filter element 8 toward the end of the filter pipe 4, and the clamping assembly 6 will maintain the position of the filter element 8 during transportation and in normal processes.

[0022] refer to Figure 4 and Figure 5 The transport assembly 5 includes a first connecting rod 51, a plurality of first rotating blocks 52 rotatably connected to the inner wall of the filter pipe 4, and two first levers 522 fixedly connected to the first rotating blocks 52. The first rotating blocks 52 are evenly arranged in four rows on the inner wall of the filter pipe 4. The first rotating blocks 52 are provided with first slide grooves 521. The number of first connecting rods 51 is 4, and each first connecting rod 51 corresponds to a row of first rotating blocks 52. The first connecting rods 51 are slidably connected to the first slide grooves 521 in the same row. The fixed positions of the two first levers 522 on each first rotating block 52 are symmetrical about the first slide grooves 521. The first slide grooves 521 are straight grooves. The rotation center of a rotating block 52 is located on the colinear line of the first sliding groove 521, and the ends of the two first levers 522 are both in contact with the filter element 8. In this way, when the first rotating block 52 rotates, the two first levers 522 will both move in an arc shape, so that the filter element 8 can be gradually transported by simply rotating the first levers 522 back and forth; the two first levers 522 form a V-shaped structure. On the one hand, the first rotating block 52 only needs to be rotated in different directions to achieve the up and down movement of the filter element 8. On the other hand, when the first lever 522 is rotated to reset, it can quickly disengage from the filter element 8 to prevent the reset from causing the filter element 8 to move.

[0023] refer to Figure 5 The inner walls at both ends of the filter pipe 4 are fixedly connected with a support frame 41, a first connecting rod 51 passes through the support frame 41, and both ends of the first connecting rod 51 are fixedly connected with a first limit platform 53, a first spring 54 is provided between the first limit platform 53 and the support frame 41, and both ends of the first spring 54 are fixedly connected to the first limit platform 53 and the support frame 41 respectively. The first connecting rod 51 is supported on the support frame 41 under the opposite forces of the two first springs 54. When the first connecting rod 51 moves, the two first springs 54 will generate a deformation force, and the deformation force is used to reset the first connecting rod 51.

[0024] The connecting member 3 is slidably connected with a first intermediate rod 55 slidably connected with the first connecting rod 51, and the first intermediate rod 55 is connected to the first connecting rod 51 by a first tension spring 57; the connecting member 3 is provided with an annular groove 31, and the end of the first intermediate rod 55 is clamped in the annular groove 31 and can move along the annular groove 31. When the connecting member 3 rotates, the first intermediate rod 55 maintains a sliding connection with the first connecting rod 51; the elastic force of the first tension spring 57 is greater than the first spring 54. When the connecting member 3 located at the bottom moves downward, the first intermediate rod 55 located at the bottom can drive the first connecting rod 51 to move through the first tension spring 57. At this time, the first tension spring 57 located at the top will also be stretched, so that the first tension spring 57 can move downward as a whole and drive the first rotating block 52 to rotate, and the first lever 522 drives the filter element 8 to move outward; when the connecting member 3 located at the bottom is reset upward, with the relaxation and reset of the first tension spring 57 and the deformation and reset of the first spring 54, the first connecting rod 51 will reset upward, so that the first rotating block 52 rotates in the opposite direction.

[0025] refer to Figure 6 and Figure 7 The clamping assembly 6 includes a connecting plate 42 connecting the support frames 41 at both ends, a clamping rod 67 penetrating and slidably connected to the connecting plate 42, a clamping plate 63 fixedly connected to the end of the clamping rod 67, a second rotating block 62 rotatably connected to the clamping rod 67, a second lever 621 fixedly connected to the second rotating block 62, and a second connecting rod 61 penetrating and slidably connected to the support frame 41. A pre-tightening spring 64 is provided between the clamping plate 63 and the connecting plate 42. The pre-tightening spring 64 forces the clamping plate 63 to face the filter element 8, so that the clamping plate 63 can clamp the filter element 8. The second rotating block 62 is provided with a second sliding groove 622, and the second connecting rod 61 is slidably connected to the second sliding groove 622. The installation positions of the two second levers 621 are symmetrical about the second sliding groove 622, and the end of the second lever 621 is provided with a roller 623 abutting against the connecting plate 42; when the second connecting rod 61 drives the second rotating block 62 to rotate, the abutting rod will move in the direction away from the filter element 8, so that the lock of the filter element 8 can be released; when the second connecting rod 61 is reset, the pre-tightening spring 64 will reset the clamping plate 63, so that the two second levers 621 continue to abut against the connecting plate 42 at the same time.

[0026] refer to Figure 7 The second connecting rod 61 is provided with a second limit platform 65, and a second spring 66 is provided between the second limit platform 65 and the support frame 41. The second spring 66 positions the second connecting rod 61. The second connecting rod 61 is supported on the support frame 41 under the opposite forces of the two second springs 66. When the second connecting rod 61 moves, the two second springs 66 will generate a deformation force, which is used to reset the second connecting rod 61; the second connecting rod 61 is fixedly connected to the first connecting rod 51 through the connecting block 56, thereby realizing the synchronous movement of the first connecting rod 51 and the second connecting rod 61.

[0027] refer to Figure 8 The connecting member 3 is provided with an annular groove 32, and an annular block 96 is clamped in the annular groove 32. The annular block 96 is fixedly connected with a pull rod 95, and the filter pipe 4 is fixedly connected with a guide ring 99. The pull rod 95 passes through the guide ring 99, and the filter pipe 4 is fixedly connected with a fixed block 9. A slide rail 11 is provided on the frame 1, and the slide rail 11 is slidably connected with the fixed block 9. The fixed block 9 is slidably connected with a third connecting rod 92, and both ends of the third connecting rod 92 pass through the fixed block 9. The third connecting rod 92 is slidably connected with the pull rod 95, and the end of the third connecting rod 92 is connected to the pull rod 95 through a second tension spring 98; the circular clamping between the annular groove 32 and the annular block 96 can effectively disperse stress and prevent the pull rod 95 from easily falling off from the connecting member 3. When the connecting member 3 rotates, the annular groove 32 and the annular block 96 can remain clamped; the pull rod 95 passes through the guide ring 99, which plays a guiding and positioning role for the pull rod 95. It ensures that the pull rod 95 always remains on the correct axis during the movement, and avoids the pull rod 95 from deflecting; both ends of the third connecting rod 92 pass through the fixed block 9 and are slidably connected to the pull rod 95, and the ends are also connected through the second tension spring 98. This structure forms an elastic connection system between the pull rod 95 and the filter pipe 4, and the elastic force of the third tension spring is the largest. When the third connecting rod 92 moves upward, the third tension spring located at the top will lift the pull rod 95, and the third tension spring located at the bottom will tighten the pull rod 95, so that only the upper connecting member 3 can move upward, so that the upper connecting member 3 drives the transport component 5 and the clamping component 6 to move.

[0028] refer to Figure 8The third connecting rod 92 is fixedly connected with a third limiting platform 921 at both ends, and a third spring 94 is arranged between the third limiting platform 921 and the fixed block 9, and the third spring 94 maintains the position of the third connecting rod 92. The pull rod 95 is sleeved with a fourth spring 97, and the fourth spring 97 is located between the annular block 96 and the guide ring 99, and the fourth spring 97 maintains the position of the pull rod 95. The fixed block 9 is fixedly connected with the first motor 91, and the output end of the first motor 91 is fixedly connected with a half gear 93, and the third connecting rod 92 is provided with a rack 922 meshing with the half gear 93. The third springs 94 arranged between the third limiting platforms 921 and the fixed block 9 at both ends of the third connecting rod 92 further enhance the elastic buffering capacity of the entire structure, and the third springs 94 can make the third connecting rod 92 more stable; the first motor 91 drives the half gear 93 to different directions to drive the third connecting rod 92 to move up / down, so that the direction of the reciprocating motion of the third connecting rod 92 can be realized by controlling the rotation direction of the first motor 91. When the first motor 91 drives the third connecting rod 92 to move upward through the half gear 93, the third spring 94 will be deformed. The deformation force generated by the third spring 94 is used to reset the third connecting rod 92. Since the meshing period of the half gear 93 and the rack 922 on the third connecting rod 92 is only one-half, the third connecting rod 92 can be driven to move when the half gear 93 is meshed with the rack 922; when the half gear 93 is disengaged from the rack 922, the third connecting rod 92 can be reset under the action of the third spring 94.

[0029] refer to Fig. 9 A ring-shaped worm gear 14 is installed on the side surface of the connecting member 3, a worm 12 that can mesh with the ring-shaped worm gear 14 is installed on the frame 1, and a second motor 13 that drives the worm 12 to rotate is installed on the frame 1; when the second motor 13 is started, the circumferential rotation of the filter pipe 4 is restricted, so that the ring-shaped worm gear 14 can climb along the worm 12, thereby realizing the movement of the filter pipe 4 on the frame 1.

[0030] refer to Fig. 9 , the connector 3 is provided with a stepped portion 33, the stepped portion 33 is provided with an annular rubber 44, the support frame 41 is fixedly connected with a first barrel ring 45, the first barrel ring 45 is threadedly connected with a second barrel ring 43, the second barrel ring 43 is fixedly connected with the annular rubber 44, the connector 3 is keyed with the annular rubber 44, the side surface of the connector 3 is fixedly connected with a gear ring 16, the frame 1 is equipped with a driving gear meshing with the gear ring 16, and the frame 1 is equipped with a third motor 15 that provides power for the driving gear. When the second motor 13 rotates forward, the connector 3 rotates with it, and the connector 3 drives the second barrel ring 43 to rotate. Since the second barrel ring 43 is threadedly connected with the first barrel ring 45, the second barrel ring 43 can drive the annular rubber 44 to move upward to block the connection between the connector 3 and the joint 2; and it can limit the movement of the filter pipe 4.

[0031] The implementation principle of an ultrafiltration device in an embodiment of the present application is as follows: sewage enters the filter pipe 4 through a transport pipe connected to a joint 2, a filter element 8 is mounted on a clean water pipe 7 provided with a plurality of through holes 71, and sewage enters the clean water pipe 7 after being filtered by the filter element 8, and is transported away from a water outlet pipe connected to the clean water pipe 7.

[0032] When the filter element 8 needs to be replaced, the second motor 13 is started, and the second motor 13 drives the worm 12 to rotate. Since the circumferential rotation of the filter pipe 4 is limited, the annular worm gear 14 on the connecting piece 3 engaged with the worm 12 will climb along the worm 12, thereby driving the filter pipe 4 to move on the frame 1, so that the filter pipe 4 and the joint 2 are offset, which facilitates the subsequent replacement operation of the filter element 8.

[0033] During the replacement of the filter element 8, the transport assembly 5 plays a role. The first motor 91 drives the half gear 93 to rotate, and the half gear 93 engages with the rack 922 on the third connecting rod 92 to drive the third connecting rod 92 to move. When the third connecting rod 92 moves upward, due to the elastic characteristics of the third tension spring, only the upper connecting member 3 can move upward, and this connecting member 3 drives the parts connected to it to move. The annular groove 32 of the connecting member 3 is engaged with the annular block 96, and the pull rod 95 passes through the guide ring 99 and is slidably connected to the third connecting rod 92 and is connected through the second tension spring 98 to form an elastic connection system. At the same time, the first intermediate rod 55 slidably connected to the connecting member 3 is connected to the first connecting rod 51 through the first tension spring 57, and the elastic force of the first tension spring 57 is greater than that of the first spring 54. When the lower connecting member 3 moves downward, the lower first intermediate rod 55 drives the first connecting rod 51 to move downward through the first tension spring 57 to overcome the force of the first spring 54, and the upper first tension spring 57 is stretched, so that the first connecting rod 51 moves downward as a whole and drives the first rotating block 52 to rotate, and the two first shifting rods 522 ends of the V-shaped structure on the first rotating block 52 abut against the filter element 8 and move in an arc, so that the filter element 8 moves outward; when the lower connecting member 3 returns to its original position upward, the first tension spring 57 relaxes and returns to its original position, and the first spring 54 deforms and returns to its original position, so that the first connecting rod 51 returns to its original position upward and drives the first rotating block 52 to rotate in the opposite direction.

[0034] The clamping assembly 6 maintains the filter element 8 in a stable position during the whole process. The clamping plate 63 clamps the filter element 8 toward the filter element 8 under the action of the preload spring 64. When the second connecting rod 61 drives the second rotating block 62 to rotate, the roller 623 at the end of the second lever 621 of the second rotating block 62 abuts against the connecting plate 42, so that the abutting rod 67 drives the clamping plate 63 to move away from the filter element 8, thereby releasing the lock on the filter element 8; when the second connecting rod 61 is reset, the preload spring 64 resets the clamping plate 63, so that the two second levers 621 continue to abut against the connecting plate 42. In addition, the second connecting rod 61 is fixedly connected to the first connecting rod 51 through the connecting block 56, so that the two can move synchronously.

[0035] In addition, the connector 3 is provided with a stepped portion 33 and an annular rubber 44, the first barrel ring 45 connected to the support frame 41 is threadedly connected to the second barrel ring 43, and the second barrel ring 43 is fixedly connected to the annular rubber 44, the connector 3 is keyed to the annular rubber 44, and the gear ring 16 on the side surface of the connector 3 is meshed with the driving gear on the frame 1 and driven by the third motor 15. When the second motor 13 rotates forward, the connector 3 drives the second barrel ring 43 to rotate, so that the second barrel ring 43 drives the annular rubber 44 to move upward to block the connection between the connector 3 and the joint 2 and limit the movement of the filter pipe 4, providing sealing and stability guarantees for some operations during the replacement of the filter element 8.

[0036] refer to Fig.10 A restaurant wastewater treatment process includes a regulating tank, an anaerobic tank, a spiral press desludging machine, a biochemical tank, an ultrafiltration device and coagulation sedimentation.

[0037] The kitchen wastewater is first pretreated in the regulating tank. The pretreatment mainly adjusts the water quality and water volume of the kitchen wastewater, such as the pH value, temperature and pollutant concentration of the wastewater, to ensure that the subsequent treatment units can operate under relatively stable conditions. After the pretreatment, the wastewater enters the anaerobic tank to use anaerobic microorganisms to decompose the macromolecular organic matter in the wastewater, reducing the load of the subsequent treatment units. A large amount of sludge will be generated during the anaerobic treatment process, which is removed by the desludging machine to prevent a large amount of sludge from entering the subsequent treatment units and affecting the treatment effect. The wastewater treated in the anaerobic tank flows into the biochemical tank, and a two-stage A / O (anoxic / The wastewater is further treated by the aerobic (aerobic) process; the first stage A / O: in the anoxic tank, denitrifying bacteria use the organic matter in the wastewater as a carbon source to reduce the nitrate nitrogen and nitrite nitrogen in the reflux mixed liquor to nitrogen gas to achieve denitrification; in the aerobic tank, aerobic microorganisms further decompose the organic matter in the wastewater into carbon dioxide and water, and at the same time convert ammonia nitrogen into nitrate nitrogen and nitrite nitrogen through nitrification; the second stage A / O: further enhance the denitrification and phosphorus removal effect, and more fully remove pollutants such as nitrogen and phosphorus by optimizing process parameters and microbial community structure. Then, the macromolecular organic matter, colloid substances and bacteria in the wastewater are intercepted by the ultrafiltration equipment, so that the water is further purified; the water filtered by the ultrafiltration equipment enters the coagulation and sedimentation unit, and the fine particles and residual organic matter in the wastewater are formed into flocs and precipitated by adding coagulants, so as to further improve the water quality. Finally, the water that meets the standards after the coagulation and sedimentation unit is discharged, and the water that does not meet the standards flows back to the regulating tank.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ultrafiltration device, characterized in that: The invention comprises a frame (1), a plurality of joints (2) fixedly connected to the frame (1), a plurality of filter pipes (4) arranged on the frame (1), connecting pieces (3) slidably connected to both ends of the filter pipes (4), a transport component (5) and a clamping component (6) arranged in the filter pipes (4), wherein both ends of the filter pipes (4) are matched with the joints (2) via the connecting pieces (3), the filter pipes (4) can be moved on the frame (1), and when the filter pipes (4) and the joints (2) are offset, the transport component (5) can transport the filter element (8) in the filter pipes (4) to the outside of the pipe, and the clamping component (6) is used to fix the filter element (8).

2. The ultrafiltration device according to claim 1, characterized in that: The transport assembly (5) comprises a first connecting rod (51), a plurality of first rotating blocks (52) rotatably connected to the inner wall of the filter pipe (4), and two first shifting rods (522) fixedly connected to the first rotating blocks (52); the first rotating blocks (52) are provided with a first sliding groove (521); the first connecting rod (51) is slidably connected to the first sliding groove (521); the two first shifting rods (522) are installed at positions symmetrical to the first sliding groove (521), and the two first shifting rods (522) are both in contact with the filter element (8).

3. The ultrafiltration device according to claim 2, characterized in that: The inner walls at both ends of the filtering pipe (4) are fixedly connected to a support frame (41), a first connecting rod (51) passes through the support frame (41), both ends of the first connecting rod (51) are fixedly connected to a first limiting platform (53), a first spring (54) is provided between the first limiting platform (53) and the support frame (41), the first spring (54) maintains the position of the first connecting rod (51), the connecting member (3) is slidably connected to a first intermediate rod (55) slidably connected to the first connecting rod (51), and the first intermediate rod (55) is connected to the first connecting rod (51) via a first tension spring (57).

4. The ultrafiltration device according to claim 3, characterized in that: The clamping assembly (6) comprises a connecting plate (42) connected to the support frames (41) at both ends, a clamping rod (67) penetrating and slidably connected to the connecting plate (42), a clamping plate (63) fixedly connected to the end of the clamping rod (67), a second rotating block (62) rotatably connected to the clamping rod (67), a second lever (621) fixedly connected to the second rotating block (62), and a second connecting rod (61) penetrating and slidably connected to the support frame (41), the second rotating block (62) being provided with a second sliding groove (622), the second connecting rod (61) being slidably connected to the second sliding groove (622), the installation positions of the two second levers (621) being symmetrical about the second sliding groove (622), the end of the second lever (621) being provided with a roller (623) abutting against the connecting plate (42), a preload spring (64) being provided between the clamping plate (63) and the connecting plate (42), the preload spring (64) forcing the clamping plate (63) toward the filter element (8).

5. The ultrafiltration device according to claim 4, characterized in that: The second connecting rod (61) is provided with a second limiting platform (65), and a second spring (66) is provided between the second limiting platform (65) and the support frame (41). The second spring (66) positions the second connecting rod (61), and the first connecting rod (51) is fixedly connected to the second connecting rod (61).

6. The ultrafiltration device according to claim 5, characterized in that: The connecting member (3) is provided with an annular groove (32), the annular groove (32) is clamped with an annular block (96), the annular block (96) is fixedly connected with a pull rod (95), the filter pipe (4) is fixedly connected with a guide ring (99), the pull rod (95) passes through the guide ring (99), the filter pipe (4) is fixedly connected with a fixed block (9), a slide rail (11) is provided on the frame (1), the slide rail (11) is slidably connected to the fixed block (9), the fixed block (9) is slidably connected with a third connecting rod (92), both ends of the third connecting rod (92) pass through the fixed block (9), the third connecting rod (92) is slidably connected with the pull rod (95), and the end of the third connecting rod (92) is connected to the pull rod (95) via a second tension spring (98).

7. The ultrafiltration device according to claim 6, characterized in that: The third connecting rod (92) is fixedly connected to a third limiting platform (921) at both ends, a third spring (94) is provided between the third limiting platform (921) and the fixed block (9), and the third spring (94) maintains the position of the third connecting rod (92). The pull rod (95) is sleeved with a fourth spring (97), and the fourth spring (97) is located between the annular block (96) and the guide ring (99), and the fourth spring (97) maintains the position of the pull rod (95). The fixed block (9) is fixedly connected to the first motor (91), and the output end of the first motor (91) is fixedly connected to a half gear (93), and the third connecting rod (92) is provided with a rack (922) meshing with the half gear (93).

8. The ultrafiltration device according to claim 7, characterized in that: The side surface of the connecting member (3) is mounted with an annular worm gear (14); the frame (1) is mounted with a worm (12) that can mesh with the annular worm gear (14); the frame (1) is mounted with a second motor (13) that drives the worm gear (12) to rotate; the side surface of the connecting member (3) is fixedly connected with a gear ring (16); the frame (1) is mounted with a driving gear that meshes with the gear ring (16); and the frame (1) is mounted with a third motor (15) that provides power to the driving gear.

9. The ultrafiltration device according to claim 8, characterized in that: The connecting piece (3) is provided with a stepped portion, the stepped portion is provided with an annular rubber (44), the support frame (41) is fixedly connected to a first barrel ring (45), the first barrel ring (45) is threadedly connected to a second barrel ring (43), the second barrel ring (43) is fixedly connected to the annular rubber (44), and the connecting piece (3) is key-connected to the annular rubber (44).

10. A process for treating kitchen wastewater, characterized in that: It includes a regulating tank, an anaerobic tank, a snail stacker, a biochemical tank, an ultrafiltration device, and a coagulation and sedimentation unit. First, the kitchen wastewater flows into the regulating tank for pretreatment. After the pretreatment, the wastewater flows into the anaerobic tank. The organic matter in the wastewater is decomposed by microorganisms. Anaerobic treatment will produce a large amount of sludge. The wastewater is desludged by the snail stacker. The desludged wastewater flows into the biochemical tank and the sludge is transported out. The biochemical tank further decomposes the organic matter in the wastewater. The sludge produced by the decomposition is transported to the snail stacker. The wastewater in the biochemical tank flows into the ultrafiltration device for ultrafiltration. The filtered water flows into the coagulation and sedimentation unit. The sludge is transported to the snail stacker through the biochemical tank. The sludge is further purified by the coagulation and sedimentation unit and discharged. The unqualified produced water flows back to the regulating tank.

Images