Magnetic seed recycling machine and magnetic flocculation precipitation sewage treatment system

Abstract

The utility model discloses a magnetic seed recycling machine and a magnetic flocculation precipitation sewage treatment system, which comprise a machine shell and a driving mechanism, a separation cavity is arranged in the machine shell, a feed port and a magnetic seed outlet are respectively arranged on two sides of the machine shell, and the magnetic seed recycling machine is characterized in that a magnetic roller connected with the driving mechanism is rotatably arranged in the separation cavity; a distribution bin is arranged at the bottom of the machine shell, and two discharging ports are formed in the distribution bin. An arc-shaped plate close to the outer surface of the bottom of the magnetic roller is arranged in the separation cavity below the magnetic roller; a through groove communicated with the distribution bin is formed in the middle of the bottom surface of the arc-shaped plate; a material scraping piece is further arranged in the separation cavity on the right side of the magnetic roller, the left side of the material scraping piece abuts against the outer surface of the right side of the magnetic roller, and the right side of the material scraping piece is connected with the bottom face of the magnetic seed outlet. And a magnetic seed guide discharging channel extending towards the lower right side is also arranged on the outer wall of the shell on the right side of the magnetic seed outlet. According to the utility model, the occupied space is reduced, the use of medicaments is also reduced, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to a magnetic seed recovery machine and a magnetic flocculation sedimentation sewage treatment system. Background Art

[0002] With the rapid development of my country's economy and society, environmental problems and water pollution problems have become increasingly prominent. Compared with domestic sewage, the treatment process of mine sewage, black and smelly water, industrial wastewater and other sewage is more complicated. How to achieve rapid precipitation of pollutants in wastewater and achieve efficient purification has been a problem that has plagued the industry for many years. Traditional sewage treatment methods generally use fixed sewage treatment facilities, such as building huge physical sedimentation tanks, etc., but this treatment method has problems such as long construction period and high cost, and fixed sewage treatment facilities have poor mobility, are not easy to move and reuse, and are not conducive to controlling treatment costs. In order to solve the problem of poor mobility of traditional fixed sewage treatment facilities, it has gradually evolved to integrate related facilities for sewage treatment into containers, which can be reused while realizing the rapid transfer of sewage treatment facilities. However, due to the constraints of transportation conditions, the size of containers is generally limited, and the size of the container cannot be increased indefinitely with the increase in the demand for sewage treatment. Therefore, when facing large water body sewage treatment, the treatment efficiency of a single container is difficult to meet the treatment requirements.

[0003] The existing magnetic flocculation sedimentation technology is to add magnetic powder and flocculant during the flocculation sedimentation process, so that the magnetic powder and solid suspended matter are combined into magnetic floccules. The solid suspended matter in the wastewater has magnetic properties and the density is increased, making it easier for the floccules to precipitate at a high speed.

[0004] However, in the prior art, the sludge in the sedimentation tank needs to pass through the magnetic powder recovery device, and then be sent to the shearing machine through the magnetic powder recovery pipe to separate the particles with magnetic seeds from the ordinary sludge, and then be separated by the magnetic separator before being sent to the reaction tank, such as application number: 201921227792.0, patent name: A magnetic flocculation sedimentation sewage treatment system. This structure has the following shortcomings:

[0005] 1. There are many devices and the cost is relatively high;

[0006] 2. The magnetic powder recovery device and magnetic separator need to be placed on the ground, and then the magnetic powder is sent to the reaction tank through pipelines, which takes up a lot of space and is relatively costly;

[0007] 3. Since the magnetic flocculant is not fully utilized, part of it will be discharged with the water after magnetic separation, resulting in a waste of resources and thus increasing the cost of sewage treatment. Summary of the invention

[0008] The utility model aims to provide a magnetic seed recovery machine and a magnetic flocculation sedimentation sewage treatment system. By using the structure, the recovery efficiency of the magnetic seeds can be improved, while the space occupied can be reduced as much as possible, and the use of chemicals can be reduced, thereby reducing costs.

[0009] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a magnetic seed recovery machine, comprising a casing with a separation chamber inside and a driving mechanism installed outside the casing, a feed port and a magnetic seed outlet connected to the separation chamber are respectively provided on the left and right sides of the casing, a magnetic roller is rotatably installed in the separation chamber, and the driving mechanism drives the magnetic roller to rotate;

[0010] A distribution bin is provided at the bottom of the casing, and two discharge ports are provided on the distribution bin;

[0011] A curved plate close to the outer surface of the bottom of the magnetic roller is provided in the separation chamber below the magnetic roller, and a through groove communicating with the distribution bin is provided in the middle of the bottom surface of the curved plate;

[0012] A scraper is also provided in the separation chamber on the right side of the magnetic roller, the left side of the scraper abuts against the right outer surface of the magnetic roller, and the right side of the scraper is connected to the bottom surface of the magnetic seed outlet;

[0013] A magnetic seed guide discharge channel extending toward the lower right is also provided on the outer wall of the casing on the right side of the magnetic seed outlet, and the top left side of the magnetic seed guide discharge channel is covered on the outside of the magnetic seed outlet.

[0014] In the above technical solution, a magnetic layer is provided on the outer surface of the magnetic roller.

[0015] In the above technical solution, the scraper includes a bracket and a scraper, the bracket includes an inclined plate and a support plate, the right end of the inclined plate is connected to the bottom of the magnetic seed outlet, the inclined plate is arranged upward from right to left, the support plate is arranged below the inclined plate, the bottom of the support plate is connected to the right inner wall of the separation chamber, and the top of the support plate is connected to the left side of the bottom of the inclined plate;

[0016] The right end of the scraper is installed on the top surface of the support plate, the left side of the scraper is arranged above the left side of the inclined plate, and the left end surface of the scraper is against the right outer surface of the magnetic roller.

[0017] In the above technical solution, the scraper is arranged parallel to the support plate, the right side of the bottom of the scraper is against the top surface of the support plate, and the scraper is connected to the support plate via bolts;

[0018] And / or, the left end surface of the scraper is against the outer surface of the upper right side of the magnetic roller.

[0019] In the above technical solution, two independent distribution bins are provided at the bottom of the housing, and the two discharge ports are respectively provided at the bottom of the two distribution bins;

[0020] Two through slots are provided in the middle of the bottom surface of the arc-shaped plate, and each of the through slots is connected to one of the distribution bins.

[0021] In the above technical solution, an observation port communicating with the separation chamber is provided on the right side wall of the housing, the observation port is arranged above the magnetic seed outlet, and a transparent sealing mechanism is installed on each of the observation ports;

[0022] And / or, the top of the housing is provided with an opening communicating with the separation chamber, and a cover plate is detachably mounted on the opening.

[0023] The utility model also provides a magnetic flocculation sedimentation sewage treatment system, comprising a box, a reaction tank arranged in the box, a sedimentation tank, a high shear machine and a sludge discharge system, and also comprising the above-mentioned magnetic seed recovery machine, the magnetic seed recovery machine is installed on the top of the box, and the magnetic seed recovery machine is arranged above the reaction tank;

[0024] The two discharge ports are respectively connected with a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is connected to the sludge discharge system or the sedimentation tank, and the second connecting pipe is inserted into the reaction tank;

[0025] The magnetic seed guide discharge channel is inserted into the reaction pool, or the magnetic seed guide discharge channel is arranged directly above the reaction pool;

[0026] The mud outlet of the sedimentation tank is connected to the high shear machine through a return sludge pump, one outlet of the high shear machine is connected to the feed port of the casing, and the other outlet of the high shear machine is connected to the sludge discharge system.

[0027] In the above technical solution, a detachable ladder is also installed on the side wall of the box;

[0028] The inner side surface of the ladder contacts the side wall of the box, the bottom of the ladder is flush with the bottom of the box, and the top of the ladder is flush with the top of the box;

[0029] And / or, a handrail is provided on the outer side of the top of the ladder.

[0030] In the above technical solution, at least two mounting plates are arranged on the side wall of the box below the ladder, each mounting plate is provided with a convex portion, and the convex portion is provided with a connecting hole;

[0031] The bottom surface of the ladder is also provided with positioning holes matching the number of the mounting plates, each positioning hole is arranged opposite to one of the protrusions, and the positioning holes are arranged away from the side wall of the box body;

[0032] There are also connecting plates matching the number of the mounting plates, the bottom of the connecting plates being detachably connected to the connecting holes of the protrusions via bolts, and the top of the connecting plates being detachably connected to the corresponding positioning holes via bolts.

[0033] In the above technical solution, a screw hole is provided above the side wall of the box body, and a clearance hole facing the screw hole is provided on the inner side above the ladder. A bolt is inserted into at least one of the clearance holes, and the end of the bolt is threadedly connected to the screw hole.

[0034] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0035] 1. In the utility model, magnetic rollers are used to separate magnetic seeds, and the separated magnetic seeds are directly sent to the reaction tank through the magnetic seed guide discharge channel for direct use. There is no need to separately set up a magnetic powder recovery device and a magnetic powder pipeline delivery channel. In addition, the magnetic seed recovery machine is directly arranged above the reaction tank, which can effectively reduce space occupation and effectively reduce costs.

[0036] 2. In the utility model, two discharge ports are arranged on the distribution bin, so that the liquid after the magnetic seed is recovered can be directly sent to the reaction tank, and the coagulant and coagulant aid that have not been completely reacted in the liquid can be reused, which can effectively improve the utilization rate of the flocculant and reduce the cost of sewage treatment;

[0037] 3. In the utility model, an observation port is arranged on the casing, so that the internal situation of the magnetic seed recovery machine can be observed through the observation port, which is convenient for the staff to find and solve the problem in time;

[0038] 4. In the utility model, a ladder is detachably installed on the side wall of the box body, and the ladder can be quickly and detachably connected to the side wall of the box body directly through the connecting plate, which is convenient for maintenance by the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a structural schematic diagram of the magnetic seed recovery machine in the first embodiment of the utility model in a viewing angle state;

[0040] Figure 2 It is a structural schematic diagram of the magnetic seed recovery machine in the first embodiment of the utility model in another viewing angle state;

[0041] Figure 3 It is a cross-sectional structural schematic diagram of the magnetic seed recovery machine in the first embodiment of the utility model;

[0042] Figure 4 It is a three-dimensional structural schematic diagram of the magnetic flocculation sedimentation sewage treatment system in the first embodiment of the utility model under a viewing angle;

[0043] Figure 5 It is a three-dimensional structural schematic diagram of the magnetic flocculation sedimentation sewage treatment system in the first embodiment of the utility model in another viewing angle;

[0044] Figure 6 It is a cross-sectional view of a magnetic flocculation sedimentation sewage treatment system in Embodiment 1 of the present utility model;

[0045] Figure 7 It is a structural schematic diagram of the ladder in the first embodiment of the utility model.

[0046] Among them: 1. separation chamber; 2. casing; 3. driving mechanism; 4. feed port; 5. magnetic seed outlet; 6. magnetic roller; 7. distribution bin; 8. discharge port; 9. arc plate; 10. through groove; 11. magnetic seed guide discharge channel; 12. box; 13. reaction tank; 14. sedimentation tank; 15. high shear machine; 16. magnetic seed recovery machine; 17. return sludge pump; 18. first reaction chamber; 19. second reaction chamber; 20. third reaction chamber; 21. scraper; 22. inclined plate; 23. support plate; 24. observation port; 25. transparent sealing mechanism; 26. cover plate; 27. ladder; 28. mounting plate; 29. ​​convex part; 30. connecting plate; 31. oblique channel; 32. vertical channel; 33. handrail. DETAILED DESCRIPTION

[0047] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0048] Example 1: See Figures 1 to 7 As shown, a magnetic seed recovery machine includes a casing 2 with a separation chamber 1 inside and a driving mechanism 3 installed on the outside of the casing 2, a feed port 4 and a magnetic seed outlet 5 connected to the separation chamber 1 are respectively provided on the left and right sides of the casing 2, a magnetic roller 6 is rotatably installed in the separation chamber 1, and the driving mechanism 3 drives the magnetic roller 6 to rotate; wherein, in this embodiment, there are two feed ports.

[0049] A distribution bin 7 is provided at the bottom of the housing 2, and two discharge ports 8 are provided on the distribution bin 7;

[0050] A curved plate 9 close to the outer surface of the bottom of the magnetic roller 6 is provided in the separation chamber 1 below the magnetic roller 6, and a through groove 10 communicating with the distribution bin 7 is provided in the middle of the bottom surface of the curved plate 9;

[0051] A scraper is also provided in the separation chamber on the right side of the magnetic roller 6, the left side of the scraper abuts against the right outer surface of the magnetic roller 6, and the right side of the scraper is connected to the bottom surface of the magnetic seed outlet 5;

[0052] A magnetic seed guide discharge channel 11 extending toward the lower right is further provided on the outer wall of the casing 2 on the right side of the magnetic seed outlet 5 , and the top left side of the magnetic seed guide discharge channel 11 is covered on the outside of the magnetic seed outlet 5 .

[0053] In this embodiment, the sludge with magnetic powder will be sheared and separated by a high shearing machine to separate the sludge magnetic seed flocs, and then the water with magnetic seeds will be sent from the feed port into the separation chamber, wherein in this embodiment, a magnetic layer is provided on the outer surface of the magnetic roller. The driving mechanism includes a motor and a reducer, and the motor is connected to one end of the magnetic roller through the reducer, thereby driving the magnetic roller to rotate clockwise. When the water enters the separation chamber, it will contact the left outer surface of the magnetic roller. Since the outer surface of the magnetic roller is magnetic, when the magnetic roller rotates clockwise, the magnetic roller will adsorb the magnetic seeds in the water on the outer surface of the magnetic roller, and as the magnetic roller rotates clockwise, due to the existence of the scraper, the scraper is against the right outer surface of the magnetic roller, so that as the magnetic roller rotates, the scraper will scrape off the magnetic seeds adsorbed on the outer surface of the magnetic roller, and the scraped magnetic seeds will fall along the magnetic seed outlet, and due to the existence of the magnetic seed guide discharge channel, the magnetic seeds falling from the magnetic seed outlet will fall along the magnetic seed guide discharge channel. In addition, the spacing between the arc plate and the magnetic roller is within the magnetic adsorption range of the magnetic roller, so that the water entering between the arc plate and the magnetic roller will also be adsorbed by the magnetic roller, and the water without magnetic seeds will enter the distribution bin from the through groove and be discharged through the two discharge ports of the distribution bin. Among them, the magnetic seed guide discharge channel includes an oblique channel 31 and a vertical channel 32 that are interconnected, the left end of the oblique channel is connected to the magnetic seed outlet, and the top of the vertical channel is connected to the bottom of the oblique channel. The oblique channel is set to tilt downward from left to right.

[0054] The bottom of the housing 2 is provided with two independent distribution bins 7, and the two discharge ports 8 are respectively provided at the bottom of the two distribution bins 7; the middle of the bottom surface of the arc plate 9 is provided with two through grooves 10, and each through groove 10 is connected to one of the distribution bins 7. In this way, water will enter the corresponding distribution bins from the two through grooves and be discharged from the corresponding discharge ports.

[0055] See also Figures 4 to 7 As shown, the utility model also provides a magnetic flocculation sedimentation sewage treatment system, including a box 12, a reaction tank 13 arranged in the box 12, a sedimentation tank 14, a high shear machine 15 and a sludge discharge system, and also includes the above-mentioned magnetic seed recovery machine 16, the magnetic seed recovery machine 16 is installed on the top of the box 12, and the magnetic seed recovery machine 16 is arranged above the reaction tank 13;

[0056] The two discharge ports are respectively connected with a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is connected to the sludge discharge system or the sedimentation tank, and the second connecting pipe is inserted into the reaction tank;

[0057] The magnetic seed guide discharge channel 11 is inserted into the reaction pool 13, or the magnetic seed guide discharge channel 11 is arranged directly above the reaction pool 13;

[0058] The mud outlet of the sedimentation tank 14 is connected to the high shear machine 15 through a return sludge pump 17, one outlet of the high shear machine 15 is connected to the feed port 4 of the casing 2, and the other outlet of the high shear machine is connected to the sludge discharge system.

[0059] In this embodiment, a coagulant feeding device and a coagulant aid feeding device are also provided in the box body. The reaction tank is provided with two partitions, which divide the reaction tank into a first reaction chamber 18, a second reaction chamber 19 and a third reaction chamber 20. The sewage enters from the first reaction chamber, then flows into the second reaction chamber, and after the second reaction chamber, enters the sedimentation tank. The sedimentation tank then sends the sludge mixed with magnetic seeds after precipitation into the high shear machine through a return sludge pump. The magnetic seeds and sludge in the sludge are separated by the high shear machine, and the sludge is sent to the sludge discharge system (the sludge discharge system can be a combination of a sludge conditioner and a sludge filter press for treating the sludge), and the magnetic seeds are sent to the magnetic seed recovery machine for separating the magnetic seeds from the water. Among them, the coagulant feeding device sends the coagulant into the first reaction chamber, so that the first reaction chamber constitutes a coagulation reaction zone, wherein the magnetic seed guide discharge channel will be arranged directly above the second reaction chamber, and the magnetic seeds in the magnetic seed recovery machine are directly sent into the second reaction chamber through the magnetic seed guide discharge channel, so that the second reaction chamber constitutes a magnetic seed loading zone, and the coagulant feeding device sends the agent into the third reaction chamber, so that the third reaction chamber constitutes a coagulant aid zone, so that the magnetic seeds and solid matter are mixed to form sludge with magnetic seeds, and then enter the sedimentation tank together.

[0060] Among them, after the magnetic seed recovery machine recovers the magnetic seed, there will still be some unreacted coagulants and coagulants in the water. If they are directly discharged, it will cause waste of reagents and the cost is relatively high. Therefore, by setting two independent distribution bins, each distribution bin is provided with a discharge port, and solenoid valves are provided on the first connecting pipe and the second connecting pipe to control the corresponding discharge port to open or close. Preferably, the first connecting pipe is not used under normal circumstances, that is, the water separated from the magnetic seed by the magnetic seed recovery machine is directly discharged into the reaction tank, preferably directly discharged into the first reaction chamber, mixed with sewage for pre-reaction, and then combined with the magnetic seed, and then enter the third reaction chamber, so as to achieve sewage treatment. In this way, the unreacted reagents can be reused, effectively reducing costs. Of course, if according to the sewage treatment situation (corresponding sensors will be set in the sewage treatment system to detect the sewage treatment situation), if the sewage treatment effect is not very good, it means that the corresponding reagents are basically reacted, then the second connecting pipe can be closed, and the first connecting pipe can be opened to send the water into the sedimentation tank for discharge, or into the sludge discharge system for discharge.

[0061] In the utility model, after the sludge in the sedimentation tank is precipitated, the sludge is directly sent to the high shear machine through the return sludge pump to separate the magnetic seeds and the sludge, and the water with the magnetic seeds directly enters the magnetic seed recovery machine. After the magnetic seeds are separated by the magnetic seed recovery machine, they are directly sent to the reaction tank. The magnetic seed recovery machine is directly arranged on the top of the box body, and the magnetic seeds can be directly sent to the reaction tank without setting up other equipment, occupying less space, and the magnetic seeds can be quickly and continuously put into the reaction tank.

[0062] Moreover, in the present invention, the sewage treatment system is fully integrated in a box (the size of the box can be the size of a container), with a high degree of integration. After being manufactured in the production workshop, it can be directly transported to the sewage treatment site by truck for treatment, without the need for on-site assembly, thus reducing on-site construction and assembly time, improving the convenience of sewage treatment, and also enabling portable sewage treatment. The magnetic seed recovery machine is set on the top of the box, and the high shear machine is also set on the top of the box, which is next to the magnetic seed recovery machine. There is no need to set up power equipment such as a magnetic powder recovery and distribution device, which is more cost-effective and occupies less space.

[0063] See also Figure 3 As shown, the scraper member includes a bracket and a scraper 21, the bracket includes an inclined plate 22 and a support plate 23, the right end of the inclined plate 22 is connected to the bottom of the magnetic seed outlet 5, the inclined plate 22 is arranged upward from right to left, the support plate 23 is arranged below the inclined plate 22, the bottom of the support plate 23 is connected to the right inner wall of the separation chamber 1, and the top of the support plate 23 is connected to the left side of the bottom of the inclined plate 22;

[0064] The right end of the scraper 21 is mounted on the top surface of the support plate 23 , the left side of the scraper 21 is disposed above the left side of the inclined plate 22 , and the left end surface of the scraper 21 abuts against the right outer surface of the magnetic roller 6 .

[0065] The scraper 21 is arranged parallel to the support plate 23, the right side of the bottom of the scraper 21 abuts against the top surface of the support plate 23, and the scraper 21 is connected to the support plate 23 by bolts; the left end face of the scraper 21 abuts against the outer surface of the upper right side of the magnetic roller 6.

[0066] In this embodiment, since the scraper will contact the surface of the magnetic roller and scrape off the magnetic seeds on the surface of the magnetic roller, the scraper is subjected to greater force. When used for a long time, it will be worn and damaged. Therefore, the scraper needs to be frequently repaired, adjusted, and replaced. In order to facilitate the repair, adjustment, and replacement of the scraper, the scraper adopts a bracket and a scraper. The bracket is directly mounted on the casing, and the scraper is directly mounted on the bracket. This is convenient for the installation, disassembly, repair and replacement of the scraper. Preferably, a strip groove is provided on the scraper, and the bolt passes through the strip groove and the support plate for connection. The length of the strip groove is greater than the length of the bolt. In this way, if the contact between the scraper and the magnetic roller is worn, there will be a gap between the scraper and the magnetic roller, and some magnetic seeds on the surface of the magnetic roller will not be scraped off. In this way, the bolts are directly loosened, and the scraper is moved to the left so that the scraper continues to contact the magnetic roller, which can ensure that all the magnetic seeds can be scraped off from the magnetic roller. The scraper does not need to be replaced, and only a simple adjustment of the position is required to reduce the cost of repair and replacement. Furthermore, in order to ensure that the magnetic seeds are scraped off the magnetic roller and sent out from the casing, the bracket adopts an inclined support plate, and the right end of the support plate is connected to the bottom of the magnetic seed outlet, so that after the magnetic seeds are scraped off by the scraper, they move to the right along the scraper and the support plate and are sent out from the magnetic seed outlet, and then are discharged through the magnetic seed guide discharge channel and fall directly into the reaction tank.

[0067] See also Figure 1 As shown, an observation port 24 communicating with the separation chamber 1 is provided on the right side wall of the housing 2 , the observation port 24 is arranged above the magnetic seed outlet 5 , and a transparent sealing mechanism 25 is installed on each of the observation ports 24 .

[0068] In this embodiment, an observation port is provided, and the transparent sealing mechanism is transparent glass, so that the staff can observe the internal working conditions of the magnetic seed recovery machine through the observation port, and check the conditions of magnetic seed recovery and separation. If there are any problems, they can be solved in time without opening the casing for inspection, thereby improving the convenience of maintenance and monitoring.

[0069] The top of the housing 2 is provided with an opening communicating with the separation chamber, and a cover plate 26 is detachably mounted on the opening.

[0070] In this embodiment, the opening and the cover are arranged so that when it is necessary to inspect the internal parts of the casing, the cover can be opened, and then the internal parts can be disassembled, repaired, and replaced. At the same time, if there is a shortage of magnetic powder, the cover can be directly opened, and the magnetic powder can be put into the separation chamber through the opening, and then sent to the reaction tank through the magnetic roller or directly placed on the scraper.

[0071] See also Figure 4 , 5 As shown in FIG. 7 , a ladder 27 is detachably mounted on the side wall of the box body 12;

[0072] The inner side surface of the ladder 27 contacts the side wall of the box body 12 , the bottom of the ladder 27 is flush with the bottom of the box body 12 , and the top of the ladder 27 is flush with the top of the box body 12 .

[0073] In this embodiment, the magnetic seed recovery machine is arranged on the top of the box body, so it is inconvenient to inspect the magnetic seed recovery machine and check the internal conditions of the reaction tank. Therefore, in order to facilitate inspection and inspection, a detachable ladder is installed on the side wall of the box body, so that the staff can directly climb to the top of the box body through the ladder to conduct inspection and maintenance. At the same time, in order to facilitate the transportation of the sewage treatment system without occupying the space of the truck, the ladder adopts a detachable connection, so that the ladder can be not installed during transportation, so that it will not occupy the side space of the truck, and the ladder can be placed on the truck behind the box body, or on the top of the box body for transportation.

[0074] Among them, in order to ensure the safety of the staff when going up and down the ladder, a handrail 33 is provided on the top outer side of the ladder. The inner side of the ladder contacts the side wall of the box body, so that the box body and the handrail are protected to ensure the safety of the ladder.

[0075] See also Figure 4 , 5 As shown in FIG. 7 , at least two mounting plates 28 are provided on the side wall of the box body 12 below the ladder 27, and each mounting plate 28 is provided with a convex portion 29, and the convex portion 29 is provided with a connecting hole;

[0076] The bottom surface of the ladder 27 is also provided with positioning holes matching the number of the mounting plate 28, each positioning hole is arranged opposite to one of the protrusions 29, and the positioning holes are arranged away from the side wall of the box body 12;

[0077] There are also connecting plates 30 matching the number of the mounting plates 28, the bottom of the connecting plates 30 being detachably connected to the connecting holes of the protrusions 29 via bolts, and the top of the connecting plates 30 being detachably connected to the corresponding positioning holes via bolts.

[0078] In this embodiment, a mounting plate is pre-arranged on the side wall of the box for mounting and fixing the ladder, wherein the protrusion is mounted on the mounting plate, so that the mounting plate and the protrusion form a T-shaped structure. In this way, when the ladder needs to be installed, the ladder is directly placed on the side of the box, and then the top of the connecting plate is connected through bolts and positioning holes, and the bottom of the connecting plate is connected through bolts and connecting holes of the protrusion, so that the ladder and the box can be connected and positioned, thereby realizing the rapid installation of the ladder. When the ladder is not needed and the box needs to be transported, the connecting plate can be directly removed to facilitate the transportation of the box.

[0079] Furthermore, in order to ensure that the ladder is stably supported and does not shake, a screw hole is provided on the upper side wall of the box body, and a clearance hole facing the screw hole is provided on the inner side of the upper side of the ladder. A bolt is inserted into at least one of the clearance holes, and the end of the bolt is screwed to the screw hole. In this way, the ladder and the box body can be connected, the ladder is prevented from shaking, and the stability and safety of the ladder are ensured.

[0080] Furthermore, in this embodiment, four mounting plates are provided, and the mounting plates are all located below the ladder, and there is a large vertical spacing between the three mounting plates and the corresponding positions of the ladder. The three connecting plates respectively connect the protrusions on the three mounting plates to the ladder, so that a triangular structure is formed between the ladder, the connecting plates and the side walls of the box body, which can also support the ladder and make the ladder stable when in use. The vertical spacing between another mounting plate and the corresponding position of the ladder is relatively small, and a connecting plate is arranged perpendicular to the side wall of the box body, and the top plane of the connecting plate is against the bottom surface of the ladder to support the ladder and increase the strength of the ladder. Of course, this connecting plate perpendicular to the side wall of the box body can also be not provided, and it can be selected according to actual conditions.

[0081] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0082] In the present utility model, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral one; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, for example, the two can form a mechanical abutment or abutment connection through abutment, contact, etc., the two can also be directly hung or hung through an intermediate medium, etc., or it can be the internal connection of the two elements or the interaction relationship between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A magnetic seed recovery machine, comprising a housing with a separation chamber inside and a driving mechanism installed outside the housing, wherein a feed inlet and a magnetic seed outlet communicating with the separation chamber are respectively provided on the left and right sides of the housing, characterized in that: A magnetic roller is rotatably installed in the separation chamber, and the driving mechanism drives the magnetic roller to rotate; A distribution bin is provided at the bottom of the casing, and two discharge ports are provided on the distribution bin; A curved plate close to the outer surface of the bottom of the magnetic roller is provided in the separation chamber below the magnetic roller, and a through groove communicating with the distribution bin is provided in the middle of the bottom surface of the curved plate; A scraper is also provided in the separation chamber on the right side of the magnetic roller, the left side of the scraper abuts against the right outer surface of the magnetic roller, and the right side of the scraper is connected to the bottom surface of the magnetic seed outlet; A magnetic seed guide discharge channel extending toward the lower right is also provided on the outer wall of the casing on the right side of the magnetic seed outlet, and the top left side of the magnetic seed guide discharge channel is covered on the outside of the magnetic seed outlet.

2. The magnetic seed recovery machine according to claim 1, characterized in that: A magnetic layer is provided on the outer surface of the magnetic roller.

3. The magnetic seed recovery machine according to claim 1, characterized in that: The scraper comprises a bracket and a scraper, the bracket comprises an inclined plate and a support plate, the right end of the inclined plate is connected to the bottom of the magnetic seed outlet, the inclined plate is arranged upwardly from right to left, the support plate is arranged below the inclined plate, the bottom of the support plate is connected to the right inner wall of the separation chamber, and the top of the support plate is connected to the left side of the bottom of the inclined plate; The right end of the scraper is installed on the top surface of the support plate, the left side of the scraper is arranged above the left side of the inclined plate, and the left end surface of the scraper is against the right outer surface of the magnetic roller.

4. The magnetic seed recovery machine according to claim 3, characterized in that: The scraper is arranged parallel to the support plate, the right side of the bottom of the scraper is against the top surface of the support plate, and the scraper is connected to the support plate via bolts; And / or, the left end surface of the scraper is against the outer surface of the upper right side of the magnetic roller.

5. The magnetic seed recovery machine according to claim 1, characterized in that: Two independent distribution bins are provided at the bottom of the housing, and the two discharge ports are respectively provided at the bottom of the two distribution bins; Two through slots are provided in the middle of the bottom surface of the arc-shaped plate, and each of the through slots is connected to one of the distribution bins.

6. The magnetic seed recovery machine according to claim 1, characterized in that: An observation port communicating with the separation chamber is provided on the right side wall of the housing, the observation port is arranged above the magnetic seed outlet, and a transparent sealing mechanism is installed on each of the observation ports; And / or, the top of the housing is provided with an opening communicating with the separation chamber, and a cover plate is detachably mounted on the opening.

7. A magnetic flocculation sedimentation sewage treatment system, comprising a housing, a reaction tank arranged in the housing, a sedimentation tank, a high shear machine and a sludge discharge system, characterized in that: It also includes a magnetic seed recovery machine as described in any one of claims 1 to 6, wherein the magnetic seed recovery machine is installed on the top of the box body, and the magnetic seed recovery machine is arranged above the reaction pool; The two discharge ports are respectively connected with a first connecting pipe and a second connecting pipe, wherein the first connecting pipe is connected to the sludge discharge system or the sedimentation tank, and the second connecting pipe is inserted into the reaction tank; The magnetic seed guide discharge channel is inserted into the reaction pool, or the magnetic seed guide discharge channel is arranged directly above the reaction pool; The mud outlet of the sedimentation tank is connected to the high shear machine through a return sludge pump, one outlet of the high shear machine is connected to the feed port of the casing, and the other outlet of the high shear machine is connected to the sludge discharge system.

8. The magnetic flocculation sedimentation sewage treatment system according to claim 7 is characterized by: A ladder is detachably mounted on the side wall of the box; The inner side surface of the ladder contacts the side wall of the box, the bottom of the ladder is flush with the bottom of the box, and the top of the ladder is flush with the top of the box; And / or, a handrail is provided on the outer side of the top of the ladder.

9. The magnetic flocculation sedimentation sewage treatment system according to claim 8, characterized in that: At least two mounting plates are provided on the side wall of the box below the ladder, each mounting plate is provided with a convex portion, and the convex portion is provided with a connecting hole; The bottom surface of the ladder is also provided with positioning holes matching the number of the mounting plates, each positioning hole is arranged opposite to one of the protrusions, and the positioning holes are arranged away from the side wall of the box body; There are also connecting plates matching the number of the mounting plates, the bottom of the connecting plates being detachably connected to the connecting holes of the protrusions via bolts, and the top of the connecting plates being detachably connected to the corresponding positioning holes via bolts.

10. The magnetic flocculation sedimentation wastewater treatment system according to claim 8, characterized in that: A screw hole is arranged above the side wall of the box body, and a clearance hole facing the screw hole is arranged on the inner side above the ladder. A bolt is inserted into at least one of the clearance holes, and the end of the bolt is screwed to the screw hole.

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