Sludge recovery treatment device

Abstract

The invention relates to the field of sludge recovery treatment, in particular to a sludge recovery treatment device which is characterized in that a flocculation mixing bin and a dewatering body are arranged on the two sides of the top of a base respectively, a sludge pump assembly is fixedly arranged on the flocculation mixing bin, a discharging pipe of the sludge pump assembly is connected with a filtering bin, and a conveying pipe is fixedly arranged at the discharging end of the filtering bin; the other end of the conveying pipe is connected with the dewatering main body, and a first blow-off pipe is further arranged on the flocculation mixing bin. According to the sludge dewatering device, sludge dewatering can be achieved through the arrangement of the flocculation mixing bin and the dewatering main body, alumen ustum sludge can be filtered before entering the dewatering main body through the arrangement of the filtering bin, and the situation that hard particles with large particle sizes in the alumen ustum sludge affect the service life of the dewatering main body is avoided; and through adaptive arrangement of a backwashing pipeline, a fixed frame, a movable part, a push-pull part and a middle plate, the second filter screen can be subjected to backwashing.

Description

Technical Field

[0001] The invention relates to the technical field of sludge recovery and treatment, and in particular to a sludge recovery and treatment device. Background Art

[0002] Sludge recovery and treatment equipment plays a vital role in the field of environmental protection. They can efficiently treat sludge and achieve sludge reduction, stabilization and resource utilization.

[0003] The spiral stack sludge dewatering machine is a type of sludge recovery and treatment equipment. During the operation of the spiral stack sludge dewatering machine, the sludge stock solution is input into the sludge stabilization tank in the spiral stack solid-liquid separator, and then the reagent is injected and mixed evenly. The conditioned sludge is metered by the meter and enters the flocculation reactor. Then the second reagent is injected into the reactor and the reaction is fully stirred to form a large alum flower. The alum flower sludge formed is then sent to the concentration part of the spiral stack body, at which time the sludge separates a large amount of solids from water through gravity. Finally, the sludge is pushed to the dehydration part, and further dehydration is achieved through the relative movement of the moving and fixed discs and the increase in pressure in the filter chamber.

[0004] The alum sludge formed in the reactor often carries some hard particles with larger particle sizes. If these hard particles directly follow the alum sludge into the thickening section, the hard particles will cause wear on the key components of the thickening section such as the spiral shaft, dynamic ring and static ring, shortening the service life of the equipment and causing the performance of the equipment to decline. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a sludge recovery and treatment device.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A sludge recovery and treatment device comprises a base, wherein a flocculation mixing bin and a dehydration body are respectively arranged on both sides of the top of the base, a sludge pump assembly is fixedly arranged on the flocculation mixing bin, a discharge pipe of the sludge pump assembly is connected to a filter bin, a delivery pipe is fixedly arranged at the discharge end of the filter bin, the other end of the delivery pipe is connected to the dehydration body, and a first sewage discharge pipe is also arranged on the flocculation mixing bin; A filter channel is provided through the filter bin, a middle plate cavity is provided inwardly in the middle of one side of the filter bin, both sides of the middle plate cavity are connected with card cavities, the middle plate cavity is connected with the filter channel, a middle plate is movably inserted in the middle plate cavity, a detachable mounting piece is installed in the middle of the middle plate, and a second filter screen is fixedly provided on the mounting piece; The filter bin is provided with side chambers on both sides of the middle plate chamber, and side plates are movably arranged in the side chambers; a secondary chamber is provided between the middle plate chamber and the side chamber on one side of the filter bin, and a secondary plate is movably arranged in the secondary chamber, and both the side chamber and the secondary chamber are connected to the filter channel; A backwash pipe is fixedly arranged on the flocculation mixing bin above the sludge pump assembly, the other end of the backwash pipe is inserted into the filter channel from the top of the filter bin, an elastic rubber strip is arranged at the bottom of the backwash pipe, and a push-pull member for squeezing the elastic rubber strip is movably arranged on the middle plate.

[0007] In addition, the preferred structure is that one end of the filter channel is connected to the discharge pipe of the sludge pump assembly, and the other end is connected to the delivery pipe, and the middle plate cavity, the side cavity and the auxiliary cavity are all connected to the filter channel; The bottom of the auxiliary cavity is connected with a sewage cavity, the bottom of the filter chamber is fixedly provided with a second sewage pipe, the sewage cavity is connected with the second sewage pipe, and the bottom of the second sewage pipe is connected with the first sewage pipe.

[0008] In addition, a preferred structure is that a first filter screen is provided at one end of the backwashing pipe and inserted into the flocculation mixing bin, and the other end of the backwashing pipe is inserted into the filtration channel, a backwashing cavity is provided inside the backwashing pipe, and the backwashing cavity is connected to the filtration channel; A cavity is formed through the bottom of the backwashing pipeline corresponding to the push-pull member, and an elastic rubber strip is fixedly installed in the cavity.

[0009] In addition, a preferred structure is that a fixing frame is fixedly provided on one side of the filter bin, two guide cavities are opened on both sides of the fixing frame, fixing seats are fixedly provided on both sides of the top of the fixing frame, fixing rings are fixedly provided on the fixing seats, and a guide piece is fixedly provided on the inner wall of the fixing ring.

[0010] In addition, a preferred structure is that a movable frame is vertically movably arranged on the fixed frame, vertical rods are fixedly arranged on both sides of the movable frame, the two vertical rods of the movable frame are adapted to be inserted in the fixed ring, and guide grooves are adapted to correspond to the guide members on the vertical rods of the movable frame.

[0011] In addition, a preferred structure is that the push-pull member is arranged in an "L-shape", the top of the push-pull member is adapted to the elastic rubber strip, a fixed slope and a fixed card are fixedly arranged on one side of the top of the push-pull member, and the top adapter of the movable frame is arranged between the fixed slope and the fixed card.

[0012] In addition, a preferred structure is that a handle cavity is provided through the push-pull member, two rows of side columns are vertically provided on both sides of the push-pull member above the handle cavity, the side columns are adapted to be inserted into the guide cavity, stabilizing members are fixedly provided on both sides of the side columns located on the guide cavity, and pressure members are fixedly provided on the outer sides of the upper side columns; The side columns are all provided with first limiting cavities which penetrate vertically, and the first limiting cavities are all adapted to the vertical rods of the movable frame, and buckle grooves are provided on the tops of the side columns on the push-pull members.

[0013] In addition, a preferred structure is that a handle is fixedly provided on one side of the middle plate, the handle passes through the handle cavity, and clamping plates are fixedly provided on both sides of the middle plate above the handle, the clamping plates are adapted to the clamping cavity, and second limiting cavities are provided on the clamping plates corresponding to the vertical rods of the movable frame; A mounting cavity is provided on one side of the middle portion of the middle plate, a plurality of mounting columns are fixedly and vertically arranged in the mounting cavity, and mounting holes are adapted to be provided on the mounting pieces corresponding to the mounting columns.

[0014] In addition, a preferred structure is that a side plate is fixedly provided on the movable parts, a first connecting cavity is opened on the side plates, a sub-plate is fixedly provided on the movable parts on one side, the sub-plate is located on one side of the side plate, a second connecting cavity is opened on the sub-plate, and the first connecting cavity and the second connecting cavity are both adapted to the filter channel.

[0015] In addition, a preferred structure is that fixing rods are fixedly provided on the outer sides of the movable parts on both sides, two connecting rods are fixedly and vertically connected between the ends of the fixing rods on both sides, the connecting rods pass through the guide cavity, and the connecting rods and the stabilizing parts are both made of magnetic materials that are adapted to attract each other.

[0016] The beneficial effects of the present invention are as follows: the flocculation mixing bin and the dehydration body are used to dehydrate the sludge; the filtration bin is used to filter the alum sludge before it enters the dehydration body, so as to avoid the hard particles with larger particle sizes in the alum sludge affecting the service life of the dehydration body; and the second filter screen can be backwashed through the adaptation arrangement between the backwashing pipe, the fixed frame, the movable parts, the push-pull parts and the middle plate. This method of backwashing the second filter screen is relatively simple and convenient, and is easy for users to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a sludge recovery and treatment device proposed by the present invention; Figure 2 It is a schematic diagram of the structure of the flocculation mixing chamber, the sludge pump assembly, and the filtration chamber proposed in the present invention; Figure 3 It is a schematic diagram of the structure of the filter bin, backwashing pipeline, fixed frame, movable parts, push-pull parts and middle plate proposed in the present invention; Figure 4 for Figure 3 A schematic diagram of the structure after the movable parts, push-pull parts and middle plate are hidden; Figure 5 for Figure 4 A schematic diagram of the structure after the fixing frame is hidden; Figure 6 for Figure 5 Schematic diagram of the internal structure of the filter chamber and backwash pipeline; Figure 7 for Figure 3 Schematic diagram of the internal structure of the filter chamber and backwash pipeline; Figure 8 for Figure 7 A schematic diagram of the structure when the movable parts and the push-pull parts are pulled outward; Fig. 9 It is a structural schematic diagram of the movable part proposed in the present invention; Fig.10 It is a structural schematic diagram of the middle plate proposed in the present invention; Fig.11 for Fig.10 A schematic diagram of the structure when the mounting parts are removed from the middle plate; Fig.12 It is a schematic diagram of the structure of the push-pull member proposed in the present invention; Fig.13 It is a structural schematic diagram of the push-pull member and the middle plate proposed in the present invention; Fig.14 It is a structural schematic diagram of the fixing frame proposed in the present invention; Fig.15 It is a schematic diagram of the explosion structure between the fixed ring and the movable frame proposed in the present invention; Fig.16 It is a structural schematic diagram of the fixed frame, movable parts, push-pull parts and middle plate proposed in the present invention; Fig.17 for Fig.16 Schematic diagram of the structure when the movable parts and push-pull parts move outward.

[0018] In the figure: 1 base, 11 flocculation mixing chamber, 12 sludge pump assembly, 13 delivery pipe, 14 dehydration body, 15 first sewage pipe, 2 filter chamber, 21 filter channel, 22 middle plate cavity, 221 card cavity, 23 side cavity, 24 auxiliary cavity, 241 sewage cavity, 242 second sewage pipe, 3 backwashing pipeline, 31 elastic rubber strip, 32 first filter screen, 33 backwashing cavity, 4 fixed frame, 41 guide cavity, 42 fixed seat, 43 fixed ring, 431 guide member, 44 movable frame, 44 1 guide groove, 5 movable part, 51 side plate, 511 first connecting cavity, 52 auxiliary plate, 521 second connecting cavity, 53 fixed rod, 54 connecting rod, 6 push-pull part, 61 handle cavity, 62 fixed slope, 63 fixed clamp, 64 side column, 641 first limit cavity, 642 stabilizing part, 65 pressing part, 66 buckle groove, 7 middle plate, 70 installation cavity, 701 installation column, 71 handle, 72 installation part, 721 installation hole, 722 second filter, 73 clamp, 731 second limit cavity. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] See also Figure 1-17 A sludge recovery and treatment device includes a base 1, and a flocculation mixing bin 11 and a dehydration body 14 are respectively arranged on both sides of the top of the base 1. A sludge pump assembly 12 is fixedly arranged on the flocculation mixing bin 11, and the discharge pipe of the sludge pump assembly 12 is connected to the filter bin 2. A conveying pipe 13 is fixedly arranged at the discharge end of the filter bin 2, and the other end of the conveying pipe 13 is connected to the dehydration body 14, and a first sewage discharge pipe 15 is also arranged on the flocculation mixing bin 11.

[0021] Among them, a filter channel 21 is opened through the filter bin 2, a middle plate cavity 22 is opened inwardly in the middle of one side of the filter bin 2, and both sides of the middle plate cavity 22 are connected with a card cavity 221, the middle plate cavity 22 is connected with the filter channel 21, and a middle plate 7 is movably inserted in the middle plate cavity 22, a detachable mounting part 72 is installed in the middle of the middle plate 7, and a second filter screen 722 is fixedly installed on the mounting part 72. When the device is shut down, the second filter screen 722 with different filter diameters can be installed here by disassembling and replacing the mounting part 72, so that the filter diameter of the second filter screen 722 can be adjusted, so that the second filter screen 722 with different filter diameters can be replaced according to different sludge properties.

[0022] Among them, side cavities 23 are opened on both sides of the middle plate cavity 22 of the filter chamber 2, and side plates 51 are movably arranged in the side cavities 23. A sub-cavity 24 is opened on the filter chamber 2 between the middle plate cavity 22 and the side cavity 23 on one side, and a sub-plate 52 is movably arranged in the sub-cavity 24, and both the side cavity 23 and the sub-cavity 24 are connected to the filter channel 21.

[0023] Among them, a backwash pipe 3 is fixedly arranged on the flocculation mixing chamber 11 above the sludge pump assembly 12, and the other end of the backwash pipe 3 is inserted into the filter channel 21 from the top of the filter chamber 2. An elastic rubber strip 31 is arranged at the bottom of the backwash pipe 3, and a push-pull member 6 for squeezing the elastic rubber strip 31 is movably arranged on the middle plate 7.

[0024] The flocculation mixing bin 11 and the dewatering body 14 are provided to achieve dehydration of the sludge. The filtering bin 2 is provided to filter the alum sludge before it enters the dewatering body 14, so as to prevent the hard particles with larger particle sizes in the alum sludge from affecting the service life of the dewatering body 14. The second filter screen 722 can be backwashed by the adaptation arrangement among the backwashing pipe 3, the fixing frame 4, the movable part 5, the push-pull part 6 and the middle plate 7. This method of backwashing the second filter screen 722 is relatively simple and convenient, and is easy for users to use.

[0025] In this device, the sludge stock solution and the reagent enter the flocculation mixing bin 11 through the pipeline, and then they are stirred by the stirring paddle to react and form alum sludge. The alum sludge is sucked into the filter bin 2 through the sludge pump assembly 12, and the alum sludge filtered by the filter bin 2 is transported to the dehydration body 14 through the delivery pipe 13 for dehydration, thereby achieving the dehydration of the sludge. It is worth noting that the device used in the present invention is a spiral stacking sludge dehydrator, and the specific dehydration structure and working method of the flocculation mixing bin 11, the sludge pump assembly 12 and the dehydration body 14 are all prior art, so no further description is given. In this way, the filtering step of the alum sludge in the filter bin 2 can be used to filter the hard particles with larger particle size in the alum sludge, so as to avoid the hard particles with larger particle size from damaging the dehydration body 14.

[0026] In addition, sealing sleeves are provided on the side plates 51 , the auxiliary plates 52 and the middle plate 7 to improve the sealing performance in the filter channel 21 .

[0027] See also Figure 1 The two sides of the top of the base 1 are respectively installed with a flocculation mixing bin 11 and a dehydration body 14. When the device is used, the sludge stock solution and the reagent are stirred and reacted in the flocculation mixing bin 11 to form alum sludge. Then the alum sludge is sucked into the filter bin 2 through the sludge pump assembly 12, and the alum sludge filtered by the filter bin 2 is transported to the dehydration body 14 through the delivery pipe 13 for dehydration, thereby achieving the dehydration of the sludge.

[0028] By filtering the alum sludge in the filtering bin 2 , hard particles with larger particle sizes in the alum sludge can be filtered to prevent the hard particles with larger particle sizes from damaging the dehydration body 14 .

[0029] It is worth noting that the device is a screw stack sludge dewatering machine, and the components for achieving sludge dewatering, such as the flocculation mixing chamber 11, the sludge pump assembly 12 and the dewatering body 14, and their working methods are all prior arts, so they are not elaborated in detail.

[0030] See also Figure 2 A sludge pump assembly 12 is fixedly installed on the flocculation mixing bin 11. A feed pipe and a discharge pipe are respectively arranged at both ends of the sludge pump assembly 12. The feed pipe extends into the flocculation mixing bin 11, and the discharge pipe is connected to the filter channel 21, so that the alum sludge can be transported. It is worth noting that the specific structure of the sludge pump assembly 12 is all prior art, so it will not be described in detail.

[0031] The filter chamber 2 is located on one side of the sludge pump assembly 12, and the filter chamber 2 is fixedly connected to the flocculation mixing chamber 11 through a support frame. A backwashing pipe 3 is fixedly arranged on the top of the filter chamber 2, and the other end of the backwashing pipe 3 is connected to the flocculation mixing chamber 11. Through the arrangement of the backwashing pipe 3, backwashing water can be supplied, so that backwashing water can be provided to realize backwashing of the second filter screen 722.

[0032] See also Figure 3-9 A filter channel 21 is provided through the filter bin 2 , one end of the filter channel 21 is connected to the discharge pipe of the sludge pump assembly 12 , and the other end of the filter channel 21 is connected to the delivery pipe 13 .

[0033] A middle plate cavity 22 is provided inwardly on one side of the filter bin 2, and a middle plate 7 is movably arranged in the middle plate cavity 22. The middle plate cavity 22 is communicated with the filter channel 21 and is located in the middle of the filter channel 21. By installing the middle plate 7 in the middle plate cavity 22, the second filter screen 722 on the middle plate 7 can be located in the filter channel 21, so that the alum sludge passing through the filter channel 21 can be filtered by the second filter screen 722.

[0034] The filter chamber 2 is provided with side chambers 23 on both sides of the middle plate chamber 22, and side panels 51 are movably arranged in the side chambers 23. The side chambers 23 are connected with the filter channel 21, and the side panels 51 are provided with first communication chambers 511. When the side panels 51 are completely located in the filter chamber 2, the first communication chambers 511 are aligned with the filter channel 21, and the filter channel 21 is in an open state. When the side panels 51 are pulled outward, the first communication chambers 511 move outward with the side panels 51, and the first communication chambers 511 are no longer aligned with the filter channel 21, and the side panels 51 block the filter channel 21, and the filter channel 21 is in a blocked state.

[0035] A sub-chamber 24 is provided between the middle plate chamber 22 and the side chamber 23 on one side of the filter chamber 2. A sub-plate 52 is movably provided in the sub-chamber 24, and the sub-chamber 24 is connected with the filter channel 21. A sewage discharge chamber 241 is provided in the filter chamber 2 at the bottom of the sub-chamber 24, and the sewage discharge chamber 241 is connected with the second sewage discharge pipe 242 at the bottom of the filter chamber 2. A second connecting chamber 521 is provided on the sub-plate 52. When the sub-plate 52 is completely located in the filter chamber 2, the second connecting chamber 521 is aligned with the filter channel 21, and the sewage discharge chamber 241 is in a closed state. When the sub-plate 52 is pulled outward, the sewage discharge chamber 241 is opened, and impurities with larger particle sizes can be discharged into the second sewage discharge pipe 242 through the sewage discharge chamber 241.

[0036] The second sewage pipe 242 is connected to the first sewage pipe 15, and sewage can be discharged from the flocculation mixing chamber 11 through the first sewage pipe 15. It is worth noting that the first sewage pipe 15 and the second sewage pipe 242 are both existing technologies, so they are not described in detail.

[0037] A backwashing pipe 3 is fixedly provided on the top of the filter chamber 2, and a first filter screen 32 is fixedly provided at one end of the backwashing pipe 3 and extends into the flocculation mixing chamber 11. The filter diameter of the first filter screen 32 is small, which allows the sewage in the flocculation mixing chamber 11 to pass through the first filter screen 32. A backwashing chamber 33 is provided in the backwashing pipe 3, and the other end of the backwashing pipe 3 is inserted into the filter channel 21, so that the backwashing chamber 33 is connected with the filter channel 21.

[0038] A cavity is provided at the bottom of the backwashing pipe 3, and an elastic rubber strip 31 is fixedly installed in the cavity. The cavity can be blocked by the elastic rubber strip 31 to ensure the sealing of the backwashing cavity 33. When the elastic rubber strip 31 is in a normal state, the sewage in the flocculation mixing bin 11 can pass through the backwashing cavity 33. When the elastic rubber strip 31 is squeezed by the push-pull member 6 and moves upward, the elastic rubber strip 31 will block the backwashing cavity 33, and the sewage cannot pass through the backwashing cavity 33.

[0039] See also Figure 3 , 9 , 16-17, the fixing frame 4 is fixedly mounted on the filter bin 2, and two guide cavities 41 are provided on both sides of the fixing frame 4. The outer sides of the side plates 51 are fixedly provided with movable parts 5, and the movable parts 5 on one side are fixedly connected to the auxiliary plate 52, and the auxiliary plate 52 is parallel to the side plate 51.

[0040] The outer side of the movable member 5 is fixedly and vertically provided with a fixing rod 53, and two connecting rods 54 are fixedly connected between the ends of the fixing rods 53 on both sides, and the connecting rods 54 pass through the guide cavity 41. In this way, the movable members 5 on both sides can be guided by the guide cavity 41. And the connecting rods 54 are made of magnetic material.

[0041] See also Figure 5 , 10 -11, a mounting cavity 70 is provided on one side of the middle part of the middle plate 7, and a plurality of mounting posts 701 are fixed and vertically arranged in the mounting cavity 70. A mounting hole 721 is provided on the mounting member 72 corresponding to the mounting post 701, and the mounting member 72 can be assembled in the mounting cavity 70 by inserting the mounting post 701 into the mounting hole 721. In this way, the second filter screen 722 can be installed on the middle plate 7. By replacing different mounting members 72 on the middle plate 7, the second filter screen 722 can be replaced, so that the second filter screen 722 with different filter diameters can be replaced according to different types of sludge. When the middle plate 7 is installed in the middle plate cavity 22, the mounting member 72 can be firmly installed by clamping the inner wall of the middle plate cavity 22 on the mounting member 72.

[0042] When the user replaces the second filter 722, he only needs to shut down the device, then pull out the middle plate 7, so that the mounting member 72 can be directly taken out from the mounting cavity 70. Then, assemble the other mounting members 72 in the mounting cavity 70, and push the middle plate 7 into the middle plate cavity 22 after the installation is completed. When the middle plate 7 enters the middle plate cavity 22, the mounting member 72 can be clamped by the inner wall of the middle plate cavity 22, and the mounting column 701 can be used to clamp the mounting holes 721, which can further improve the stability of the mounting member 72, so as to improve the stability of the second filter 722 after installation. This method of replacing the second filter 722 is simple and quick, and is convenient for users to operate.

[0043] A handle 71 is fixedly provided on the outer side of the middle plate 7, and the middle plate 7 can be moved by the handle 71. A clamping plate 73 is fixedly provided on both sides of the middle plate 7 above the handle 71, and a second limiting cavity 731 is opened on the clamping plate 73 corresponding to the vertical rod on the movable frame 44.

[0044] The filter bin 2 has cavities 221 corresponding to the clamping plates 73 on both sides of the middle plate cavity 22 . When the middle plate 7 is located in the middle plate cavity 22 , one end of the clamping plate 73 is located in the clamping cavity 221 .

[0045] See also Figure 3-4 , 12-13, 16-17, a fixed slope 62 and a fixed clamp 63 are fixedly arranged on one side of the top of the push-pull member 6, and a clamping groove is arranged between the fixed slope 62 and the fixed clamp 63. By clamping the top of the movable frame 44 in the clamping groove between the fixed slope 62 and the fixed clamp 63, auxiliary fixation of the push-pull member 6 can be achieved. In addition, a buckle groove 66 is provided on the push-pull member 6 to facilitate the user to better realize the movement of the push-pull member 6.

[0046] A handle cavity 61 is provided on the push-pull member 6, and a handle 71 on the middle plate 7 passes through the handle cavity 61. Two side columns 64 are fixedly provided on both sides of the push-pull member 6 above the handle cavity 61, and the side columns 64 are adapted to be inserted into the guide cavity 41 on both sides of the fixing frame 4. Stabilizing members 642 are fixedly provided on both sides of the guide cavity 41 of the side columns 64, and the stabilizing members 642 can prevent the side columns 64 from falling off from the guide cavity 41. In addition, a pressing member 65 is fixedly provided on the outer side of the upper side column 64, and the pressing member 65 can realize the pressing of the movable member 5 to prevent the movable member 5 from falling off from the filter bin 2.

[0047] The side columns 64 are all located above the clamping plate 73, and the side columns 64 are all provided with first limiting cavities 641 corresponding to the vertical rods on the movable frame 44. The first limiting cavity 641 is aligned with the second limiting cavity 731, so that the vertical rods on the movable frame 44 can fix the side columns 64 and the clamping plate 73 by clamping the first limiting cavity 641 and the second limiting cavity 731, so that the movable frame 44 can fix the push-pull member 6 and the middle plate 7 at the same time.

[0048] It is worth noting that the stabilizing members 642 are all made of magnetic material, and the stabilizing members 642 and the connecting rods 54 are adapted to attract each other.

[0049] When the push-pull member 6 is in the process of resetting, the top of the movable frame 44 contacts the fixed slope 62. Thus, the movable frame 44 can be gradually lifted up by the fixed slope 62, so that the movable frame 44 can be moved upward during the resetting of the push-pull member 6. When the push-pull member 6 is reset, the movable frame 44 automatically falls and is clamped in the first limit cavity 641 and the second limit cavity 731 again, so that the push-pull member 6 and the middle plate 7 can be fixed. And the top of the movable frame 44 is clamped in the clamping groove between the fixed slope 62 and the fixed clamping member 63 again to achieve auxiliary fixation of the push-pull member 6.

[0050] When the push-pull member 6 is reset, the elastic rubber strip 31 can be pushed up by the push-pull member 6 to seal the backwash chamber 33. The side plate 51 and the auxiliary plate 52 are also reset synchronously, so that the first connecting chamber 511 and the second connecting chamber 521 are aligned with the filter channel 21 again.

[0051] See also Figure 14-15 , both sides of the top of the fixed frame 4 are fixedly provided with fixed seats 42, and fixed rings 43 are fixedly provided on the fixed seats 42, and the vertical rods on both sides of the movable frame 44 are movable in the fixed rings 43. Guide grooves 441 are provided on the vertical rods on both sides of the movable frame 44, and guide members 431 are provided on the fixed rings 43 to correspond to the guide grooves 441. Through the adaptation setting between the guide members 431 and the guide grooves 441, the vertical movement of the movable frame 44 on the fixed ring 43 can be realized, and the movable frame 44 can be prevented from falling off from the fixed ring 43.

[0052] In the present embodiment, the flocculation mixing bin 11 and the dewatering body 14 are provided to achieve dehydration of the sludge, and the filtering bin 2 is provided to filter the alum sludge before it enters the dewatering body 14, so as to avoid the hard particles with larger particle size in the alum sludge affecting the service life of the dewatering body 14, and the second filter screen 722 can be backwashed by the adaptation setting between the backwashing pipe 3, the fixing frame 4, the movable part 5, the push-pull part 6 and the middle plate 7. This method of backwashing the second filter screen 722 is relatively simple and convenient, and is easy for users to use.

[0053] The sludge stock solution and the reagent enter the flocculation mixing bin 11 through the pipeline, and then they are stirred by the stirring paddle to form alum sludge. The alum sludge is sucked into the filter bin 2 through the sludge pump assembly 12, and the alum sludge filtered by the filter bin 2 is transported to the dehydration body 14 through the delivery pipe 13 for dehydration, thereby achieving the dehydration of the sludge. It is worth noting that the device used in the present invention is a spiral sludge dehydrator, and the specific dehydration structure and working method of the flocculation mixing bin 11, the sludge pump assembly 12 and the dehydration body 14 are all prior art, so they are not elaborated.

[0054] Furthermore, by filtering the alum sludge in the filter bin 2 , hard particles with larger particle sizes in the alum sludge can be filtered to prevent the hard particles with larger particle sizes from damaging the dehydration body 14 .

[0055] When using the filter bin 2, the user only needs to install the mounting member 72 in the mounting cavity 70 on the middle plate 7, and then push the middle plate 7 into the filter bin 2, so as to achieve the installation of the second filter screen 722. By installing different mounting members 72 on the middle plate 7, the filter diameter of the second filter screen 722 can be adjusted. It is worth noting that through the adapter between the mounting column 701 and the mounting hole 721, and when the middle plate 7 is located in the middle plate cavity 22, the inner wall of the middle plate cavity 22 can achieve the clamping of the mounting member 72, so that the mounting member 72 can be stably assembled on the middle plate 7.

[0056] Furthermore, after the filter bin 2 has been used for a period of time, the user can backwash the second filter screen 722. During backwashing, the user only needs to turn off the sludge pump assembly 12 and then pull the push-pull member 6 outward. When the push-pull member 6 moves outward, the push-pull member 6 no longer presses the elastic rubber strip 31 on the backwash pipe 3, and the elastic rubber strip 31 can automatically reset by elastic force. At this time, since the elastic rubber strip 31 no longer blocks the backwash chamber 33 in the backwash pipe 3, the sewage in the flocculation mixing bin 11 can flow into the filtration channel 21 through the backwash chamber 33. And through the setting of the first filter screen 32, large-sized particles such as alum sludge in the flocculation mixing bin 11 cannot enter the backwash chamber 33, and only small-sized particles such as sewage can enter the backwash chamber 33.

[0057] Before the user controls the push-pull member 6 to move outward, the user only needs to pull the movable frame 44 upward, and the vertical bars on both sides of the movable frame 44 can release the clamping between the first limit cavity 641 on the side column 64 and the second limit cavity 731 on the clamping plate 73. The top of the movable frame 44 also moves upward and releases the clamping groove between the fixed slope 62 and the fixed clamping member 63, and the fixing of the push-pull member 6 and the middle plate 7 can be released. When the push-pull member 6 moves outward, the movable frame 44 automatically falls down by gravity and clamps the second limit cavity 731 on the clamping plate 73 again, so that the middle plate 7 can be fixed again.

[0058] When the push-pull member 6 moves outward, the side column 64 on the push-pull member 6 also moves outward in the guide cavity 41. When the side column 64 contacts the connecting rod 54, the connecting rod 54 can be pushed by the side column 64 and move outward synchronously, so that the fixing rod 53, the movable member 5, the side plate 51 and the auxiliary plate 52 can be driven by the connecting rod 54 to move outward synchronously.

[0059] When the side plate 51 moves outward, the first connecting cavity 511 moves outward synchronously with the side plate 51, so that the first connecting cavity 511 is no longer aligned with the filter channel 21, but the filter channel 21 is blocked by the side plate 51, so as to achieve blocking of both ends of the filter channel 21 to prevent backwash sewage from flowing out of the filter channel 21.

[0060] When the sub-plate 52 moves outward, the second communication cavity 521 moves outward synchronously with the sub-plate 52, so that the second communication cavity 521 is no longer aligned with the filter channel 21. At this time, the drainage cavity 241 at the bottom of the sub-cavity 24 is opened, and the backwash sewage can be discharged into the second drainage pipe 242 through the drainage cavity 241.

[0061] In this way, when the push-pull member 6 moves outward, the backwash chamber 33 is opened, the side plate 51 blocks both sides of the filter channel 21, and the sewage chamber 241 is opened. At this time, the sewage in the flocculation mixing chamber 11 can enter the filter channel 21 through the backwash chamber 33 and backwash the second filter screen 722, so that the particles with larger particle sizes on the second filter screen 722 can be washed away by the sewage. The washed particles and sewage can be discharged into the second sewage pipe 242 through the sewage chamber 241, so that the backwashing of the second filter screen 722 can be achieved. It is worth noting that one end of the backwash pipe 3 is located below the water surface in the flocculation mixing chamber 11, which allows the water flow to automatically flow into the backwash pipe 3.

[0062] After the backwashing of the second filter screen 722 is completed, the user only needs to push the push-pull member 6 inward. Since the stabilizing member 642 and the connecting rod 54 on the push-pull member 6 are both made of magnetic materials that are adapted to attract each other, when the push-pull member 6 moves inward, the connecting rod 54 can also be driven to move inward. Thus, the fixing rod 53, the movable member 5, the side plate 51 and the auxiliary plate 52 can be driven to move inward synchronously through the connecting rod 54.

[0063] When the side plate 51 and the auxiliary plate 52 are completely inserted into the filter chamber 2, since the push-pull member 6 has not yet completely moved inwards to reset, the magnetism between the stabilizing member 642 and the connecting rod 54 is disconnected due to the movement of the push-pull member 6. When the push-pull member 6 is completely moved and reset, the pressing member 65 on the push-pull member 6 moves to the outside of the movable member 5, so that the movable member 5 can be pressed by the pressing member 65, thereby fixing the movable members 5 on both sides, and thus the side plate 51 and the auxiliary plate 52 can be completely fixed in the filter chamber 2.

[0064] When the push-pull member 6 is in the process of resetting, the top of the movable frame 44 contacts the fixed slope 62. Thus, the movable frame 44 can be gradually lifted up by the fixed slope 62, so that the movable frame 44 can be moved upward during the resetting of the push-pull member 6. When the push-pull member 6 is reset, the movable frame 44 automatically falls and is clamped in the first limit cavity 641 and the second limit cavity 731 again, so that the push-pull member 6 and the middle plate 7 can be fixed. And the top of the movable frame 44 is clamped in the clamping groove between the fixed slope 62 and the fixed clamping member 63 again to achieve auxiliary fixation of the push-pull member 6.

[0065] When the push-pull member 6 is reset, the elastic rubber strip 31 can be pushed up by the push-pull member 6 to achieve the blocking of the backwash chamber 33. The side plate 51 and the sub-plate 52 are also reset synchronously, so that the first connecting chamber 511 and the second connecting chamber 521 are aligned with the filter channel 21 again. At this time, the user only needs to open the sludge pump assembly 12 again to achieve the normal use of the device. It is worth noting that the back of the filter chamber 2 is made of transparent material, so that the user can observe the inside of the filter chamber 2.

[0066] Furthermore, a cavity is provided at the bottom of the backwashing pipe 3, and an elastic rubber strip 31 is fixedly installed in the cavity, and the cavity can be blocked by the elastic rubber strip 31 to ensure the sealing of the backwashing cavity 33. When the elastic rubber strip 31 is in a normal state, the sewage in the flocculation mixing bin 11 can pass through the backwashing cavity 33. When the elastic rubber strip 31 is squeezed by the push-pull member 6 and moves upward, the elastic rubber strip 31 will block the backwashing cavity 33, and the sewage cannot pass through the backwashing cavity 33.

[0067] Furthermore, the filter diameter of the first filter screen 32 is smaller than that of the second filter screen 722. The first filter screen 32 allows sewage and small-sized particles to pass through, so as to realize the backwashing of the second filter screen 722. The second filter screen 722 allows alum sludge to pass through, only to intercept hard particles with larger particle sizes. And it is worth noting that the second filter screen 722 is a replaceable design.

[0068] Furthermore, only when the whole device is shut down, the user can replace the mounting member 72 and the second filter screen 722 on the middle plate 7 to prevent the sewage in the flocculation mixing chamber 11 and the filter chamber 2 from flowing out. By replacing different mounting members 72 on the middle plate 7, the second filter screen 722 can be replaced, so that the second filter screen 722 with different filter diameters can be replaced according to different types of sludge. When the middle plate 7 is installed in the middle plate cavity 22, the mounting member 72 is clamped by the inner wall of the middle plate cavity 22 to ensure the stable installation of the mounting member 72. When the user replaces the second filter screen 722, he only needs to shut down the device and then pull out the middle plate 7, so that the mounting member 72 can be directly taken out from the installation cavity 70. Then, other mounting members 72 are assembled in the installation cavity 70, and after the installation is completed, the middle plate 7 is pushed into the middle plate cavity 22. When the middle plate 7 enters the middle plate cavity 22, the mounting member 72 can be clamped by the inner wall of the middle plate cavity 22, and the mounting post 701 can be clamped between the mounting holes 721 to further improve the stability of the mounting member 72, so as to improve the stability of the second filter screen 722 after installation. This method of replacing the second filter screen 722 is simple and fast, and is convenient for users to operate.

[0069] Furthermore, sealing sleeves are provided on the side plates 51 , the auxiliary plates 52 and the middle plate 7 to improve the sealing performance in the filter channel 21 .

[0070] In the present invention, the flocculation mixing bin 11 and the dewatering body 14 are provided to achieve dehydration of the sludge, and the filtering bin 2 is provided to filter the alum sludge before it enters the dewatering body 14, so as to avoid the hard particles with larger particle size in the alum sludge from affecting the service life of the dewatering body 14, and the second filter screen 722 can be backwashed by the adaptation setting between the backwashing pipe 3, the fixing frame 4, the movable part 5, the push-pull part 6 and the middle plate 7. This method of backwashing the second filter screen 722 is relatively simple and convenient, and is easy for users to use.

[0071] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A sludge recovery and treatment device, comprising a base, characterized in that: A flocculation mixing bin and a dehydration body are respectively arranged on both sides of the top of the base, a sludge pump assembly is fixedly arranged on the flocculation mixing bin, a discharge pipe of the sludge pump assembly is connected to the filtration bin, a delivery pipe is fixedly arranged at the discharge end of the filtration bin, the other end of the delivery pipe is connected to the dehydration body, and a first sewage discharge pipe is also arranged on the flocculation mixing bin; A filter channel is provided through the filter bin, a middle plate cavity is provided inwardly in the middle of one side of the filter bin, both sides of the middle plate cavity are connected with card cavities, the middle plate cavity is connected with the filter channel, a middle plate is movably inserted in the middle plate cavity, a detachable mounting piece is installed in the middle of the middle plate, and a second filter screen is fixedly provided on the mounting piece; The filter bin is provided with side chambers on both sides of the middle plate chamber, and side plates are movably arranged in the side chambers; a secondary chamber is provided between the middle plate chamber and the side chamber on one side of the filter bin, and a secondary plate is movably arranged in the secondary chamber, and both the side chamber and the secondary chamber are connected to the filter channel; A backwash pipe is fixedly arranged on the flocculation mixing bin above the sludge pump assembly, the other end of the backwash pipe is inserted into the filter channel from the top of the filter bin, an elastic rubber strip is arranged at the bottom of the backwash pipe, and a push-pull member for squeezing the elastic rubber strip is movably arranged on the middle plate.

2. A sludge recovery and treatment device according to claim 1, characterized in that: One end of the filter channel is connected to the discharge pipe of the sludge pump assembly, and the other end is connected to the delivery pipe, and the middle plate cavity, the side cavity and the auxiliary cavity are all connected to the filter channel; The bottom of the auxiliary cavity is connected with a sewage cavity, the bottom of the filter chamber is fixedly provided with a second sewage pipe, the sewage cavity is connected with the second sewage pipe, and the bottom of the second sewage pipe is connected with the first sewage pipe.

3. A sludge recovery and treatment device according to claim 1, characterized in that: A first filter screen is arranged at one end of the backwashing pipe and inserted into the flocculation mixing bin, and the other end of the backwashing pipe is inserted into the filtration channel. A backwashing cavity is arranged inside the backwashing pipe, and the backwashing cavity is connected with the filtration channel; A cavity is formed through the bottom of the backwashing pipeline corresponding to the push-pull member, and an elastic rubber strip is fixedly installed in the cavity.

4. A sludge recovery and treatment device according to claim 1, characterized in that: A fixing frame is fixedly arranged on one side of the filter bin, two guide cavities are opened on both sides of the fixing frame, fixing seats are fixedly arranged on both sides of the top of the fixing frame, fixing rings are fixedly arranged on the fixing seats, and guide pieces are fixedly arranged on the inner wall of the fixing ring.

5. A sludge recovery and treatment device according to claim 4, characterized in that: A movable frame is vertically movably arranged on the fixed frame, vertical rods are fixedly arranged on both sides of the movable frame, the two vertical rods of the movable frame are adapted to be inserted in the fixed ring, and guide grooves are adapted to be opened on the vertical rods of the movable frame corresponding to the guide pieces.

6. A sludge recovery and treatment device according to claim 1, characterized in that: The push-pull member is arranged in an "L-shape", the top of the push-pull member is adapted to the elastic rubber strip, a fixed slope and a fixed clamp are fixedly arranged on one side of the top of the push-pull member, and the top adapter of the movable frame is arranged between the fixed slope and the fixed clamp.

7. A sludge recovery and treatment device according to claim 6, characterized in that: The push-pull member is provided with a handle cavity, and two rows of side columns are vertically arranged on both sides of the push-pull member above the handle cavity, and the side columns are adapted to be inserted into the guide cavity, and stabilizing pieces are fixedly arranged on both sides of the guide cavity on the side columns, and pressure pieces are fixedly arranged on the outer sides of the upper side columns; The side columns are all provided with first limiting cavities which penetrate vertically, and the first limiting cavities are all adapted to the vertical rods of the movable frame, and buckle grooves are provided on the tops of the side columns on the push-pull members.

8. The sludge recovery and treatment device according to claim 1, characterized in that: A handle is fixedly provided on one side of the middle plate, and the handle passes through the handle cavity. A clamping plate is fixedly provided on both sides of the middle plate above the handle, and the clamping plate is adapted to the clamping cavity, and a second limiting cavity is opened on the clamping plate corresponding to the vertical rod of the movable frame; A mounting cavity is provided on one side of the middle portion of the middle plate, a plurality of mounting columns are fixedly and vertically arranged in the mounting cavity, and mounting holes are adapted to be provided on the mounting pieces corresponding to the mounting columns.

9. A sludge recovery and treatment device according to claim 8, characterized in that: The movable parts are all fixedly provided with side plates, each of which is provided with a first connecting cavity. A sub-plate is fixedly provided on the movable parts on one side, the sub-plate is located on one side of the side plate, and a second connecting cavity is provided on the sub-plate. Both the first connecting cavity and the second connecting cavity are adapted to the filter channel.

10. A sludge recovery and treatment device according to claim 9, characterized in that: Fixed rods are fixedly arranged on the outer sides of the movable parts on both sides, and two connecting rods are fixedly and vertically connected between the ends of the fixed rods on both sides. The connecting rods pass through the guide cavity, and the connecting rods and the stabilizing parts are both made of magnetic materials that are adapted to attract each other.

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