CN115054988B - Wastewater purifier for metallurgical wastewater treatment - Google Patents

Abstract

The invention discloses a waste water purifier for metallurgical waste water treatment. The waste water purifier for metallurgical waste water treatment can send cold water to the inner side of the annular cylinder cavity through the cold water inlet pipe while guiding the cooling waste water to the inside of the long cylinder, and exchange the residual heat contained in the cooling waste water to the cold water through heat conduction. , the waste heat in the cooling wastewater can be recycled, and the value of the cooling wastewater can be maximized. The top tank can be easily cleaned without opening the top tank, and some fine particles in the cooling wastewater can be guided by eddy currents. Collect and recycle cooling wastewater, save water resources, and reduce the input cost of cooling liquid in the metallurgical process.

Description

A wastewater purifier for metallurgical wastewater treatment

technical field

The invention relates to the technical field of metallurgical wastewater treatment, in particular to a wastewater purifier for metallurgical wastewater treatment.

Background technique

There are many products in the metallurgical industry, and each series of production processes will discharge a large amount of wastewater, which is one of the main wastewaters that pollute the environment, and recycled water is an important measure for the treatment of metallurgical wastewater. The development of comprehensive utilization and recovery of useful substances and heat energy from wastewater , reduce the loss of material and fuel; all kinds of water in the enterprise are comprehensively balanced and used in series according to different water quality requirements, and at the same time, the water quality stabilization measures are improved, and the water recycling rate is continuously improved. Treatment equipment for cooling wastewater.

Existing wastewater purifiers for metallurgical wastewater treatment cannot filter, purify, and recycle cooling wastewater, and at the same time recycle the waste heat in the cooling wastewater to maximize the value of the cooling wastewater, so that the heat in the cooling wastewater is lost in vain. , it is necessary to open the purifier to clean and maintain the internal structural components, resulting in high manual maintenance costs of the purifier, and it is impossible to pretreat some fine particles in the cooling wastewater to reduce the filtration load of the filter material layer.

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, the present invention provides a waste water purifier for metallurgical waste water treatment, which includes an inverted bucket bottom, a purification tank is arranged on the upper end of the inverted bucket bottom, a sedimentation tank is installed on the upper end of the purification tank, and the upper end of the sedimentation tank is installed. There is a cover, a motor is installed in the middle of the upper end of the cover, a filter material layer is installed on the inner side of the purification tank, a pollution guide mechanism is installed on the upper end of the filter material layer, and a return pipe is connected to one side of the bottom surface of the bucket. , the other side of the bottom surface of the inverted bucket is connected with a heat recovery pipe, the interior of the bottom of the inverted bucket is hollow, and the filter material layer is sequentially provided with a pebble cushion layer, a first-level silica sand filter material layer and a second-level filter material layer from top to bottom. Silica sand filter layer.

Preferably, the purification tank includes a long cylindrical body, a backflushing pipe is connected to the lower side of the surface of the long cylindrical body, a cold water inlet pipe is connected to the upper side of the surface of the long cylindrical body, and the other side of the surface of the long cylindrical body is connected A sewage discharge pipe is connected, the inner wall of the long cylinder is provided with an annular cylinder cavity, and the inner wall surface of the annular cylinder cavity is connected with a number of heat exchange rings at equal distances.

Preferably, the bottom end of the long cylinder is installed with the flange on the upper end of the bottom of the inverted bucket by a screw rod, the recoil pipe penetrates the inner wall of the long cylinder and extends into the inner side of the long cylinder, and the inner wall of the long cylinder is close to the lower port It is arranged in a funnel shape, the cold water inlet pipe runs through the inner wall of the long cylinder and extends into the inner side of the annular cylinder cavity. In the funnel part on the inner wall of the long cylinder, the heat return pipe runs through the bottom of the inverted bucket, the long cylinder and extends into the inner side of the annular cylinder, and the return pipe runs through the bottom of the inverted bucket, the long cylinder and extends into the inner side of the long cylinder .

Preferably, the sedimentation tank includes a top tank, the inner wall of the top tank is hollow and communicated with the annular cylinder cavity, an inlet pipe is connected to the upper surface of the cover, and a water level rod is installed inside the top tank , the bottom end of the water level rod is installed with a floating ball, and the surface of the top tank body is connected with the second sewage pipe, the inner bottom plate of the top tank body is fixedly connected with a baffle plate, and a guide pipe is fixedly installed in the middle of the baffle plate .

Preferably, the inner side of the top tank body is divided into a sedimentation chamber and a drainage chamber through the cooperation of the bottom plate and the partition plate, the inlet pipe penetrates through the cover and communicates with the sedimentation chamber inside the top tank body, and the cover is connected by a screw rod Installed with the upper flange of the top tank body, the second sewage pipe runs through the top tank body and is flush with the bottom plate inside the top tank body, and a suction pump is installed on the guide pipe.

Preferably, a sealing ring is installed at the overlapping portion of the water level rod and the cover, the water level rod is installed by lifting and lowering the sealing ring and the cover, a circular opening is formed on the bottom plate inside the top tank body, and the guide pipe is The lower end is matched with the round mouth correspondingly, a closed water ring is fitted and installed between the long cylinder and the top tank, and the upper end of the long cylinder is installed with the lower flange of the top tank through a screw rod.

Preferably, the pollution guide mechanism includes a hollow cylinder, the surface of the hollow cylinder is fixedly connected with paddles, which play the role of stirring and draining the cooling wastewater, and guide the distribution of fine particles, and the lower end of the hollow cylinder is installed with several guides. A flow assembly, and a receiving ball installed at the lower end of the hollow cylinder, a reverse flow mechanism is installed on the inner side of the hollow cylinder, a bearing is fitted and installed on the upper port of the receiving ball, and the upper end of the bearing is connected with a threaded pipe II. The receiving ball is installed in combination with the hollow cylinder through the cooperation of the bearing and the threaded pipe.

Preferably, the rotating shaft rod at the lower end of the motor sequentially penetrates the cover, the bottom plate inside the top tank body, and extends into the inside of the long cylinder body, so as to facilitate the overall hoisting of the pollution guide mechanism on the bottom end of the top tank body, that is, the inside of the long cylinder body, wherein, Bearings are installed on the overlapping parts of the rotating shaft rod, the cover and the bottom plate inside the top tank body, the upper end of the hollow cylinder is rotatably installed with the motor through the rotating shaft rod, and the sewage pipe runs through the long cylinder body and extends to the inside of the storage ball, In addition, a plurality of one-way water seepage holes are formed on the surface of the storage ball, so that the cooling waste water entering the inner side of the storage ball can be exported in time.

Preferably, the diversion assembly includes a short pipe, the upper port of the short pipe is connected with a threaded pipe, and the surface of the short pipe is connected with a retention bucket, and a fan opening on the surface of the short pipe, the fan The inner wall of the mouth is obliquely connected with an oblique guide fan, which captures and drains part of the fine particles in the cooling wastewater running in a vortex to the fan mouth, and the oblique guide fan is in the same direction as the blade, and the retention bucket passes through the short pipe. Corresponding to the oblique guide fan, the short pipe is installed in combination with the hollow cylinder through a threaded pipe, and the inner sides of the short pipe and the hollow cylinder are both hollow, and the hollow cylinder is hung and installed at the lower end of the motor by the rotating shaft rod. The top of the filter layer.

Preferably, the reversing mechanism includes a card plate, and the surface of the card plate is provided with a dirt guide hole to facilitate and quickly guide and transport part of the fine particles to the inside of the storage ball, and the lower end of the card plate is connected with a suspension rod, and the suspension The lower end of the rod is connected with a hanging hammer, which increases the weight of the bottom of the reverse flow mechanism on the inner side of the second threaded pipe to ensure the resistance of the guide piece to water pressure. The surface of the hanging hammer is connected with the guide piece in a circular array, and the fine particles are It is spirally guided into the inner side of the storage ball, and the fine particles can only be introduced and collected by complying with the reverse direction of the guide piece, so as to prevent the collected fine particles from flowing backward and leaking from the storage ball. the inside of the cylinder, and the hanging hammer is installed in combination with the second threaded pipe through the cooperation of the hollow cylinder and the storage ball, and combined with the close cooperation between the guide piece and the second threaded pipe, a better anti-backflow function is realized.

The invention provides a waste water purifier for metallurgical waste water treatment. Has the following beneficial effects:

1. The waste water purifier for metallurgical waste water treatment can send cold water to the inner side of the annular cylinder cavity through the cold water inlet pipe while guiding the cooling waste water to the inside of the long cylinder, and use the heat exchange ring to increase the contact between the cold water and the inner wall of the annular cylinder cavity Area, through heat conduction, the residual heat contained in the cooling wastewater is exchanged into the cold water, and finally the heated cold water is recycled through the heat recovery pipe, and the cooling wastewater is purified and filtered, and the residual heat in the cooling wastewater is recovered. Utilize and maximize the value of cooling wastewater.

2. In this wastewater purifier for metallurgical wastewater treatment, the cooling wastewater is added to the sedimentation chamber through the inlet pipe for precipitation, and then the precipitated cooling wastewater is pumped into the long cylinder through the suction pump on the diversion pipe, where the cooling wastewater is sent to the sedimentation chamber. When the cooling wastewater is input, the water level rod on the floating ball can be used to intuitively know whether the added cooling wastewater reaches the maximum weight, so as to prevent the cooling wastewater from overflowing. The air pressure inside the top tank is kept the same as the air pressure outside. After the cooling wastewater in the sedimentation chamber is drained cleanly, the sedimentary coarse particles can be automatically discharged by opening the second sewage pipe, or the sedimentation chamber can be washed through the inlet pipe. Without opening the top tank, you can easily clean the stains on the inside of the top tank, saving manpower and material resources, and simplifying the overall maintenance and cleaning process of the purifier.

3. The waste water purifier for metallurgical waste water treatment drives the sewage guide mechanism to rotate inside the purification tank by starting the motor, and uses the paddle to drive the cooling waste water to rotate inside the long cylinder, so that the cooling waste water can be swirled on the filter material layer. Drainage operation can guide and collect some of the fine particles in the cooling wastewater, guide them to the inside of the short tube, and communicate with the inside of the storage ball through the short tube, the hollow cylinder, and finally collect the fine particles inside the storage ball. The fine particles can be discharged uniformly through the sewage pipe.

4. The wastewater purifier for metallurgical wastewater treatment makes the cooling wastewater fully contact with the filter material layer through the vortex-like water flow form, and finally is filtered layer by layer to the lowermost side of the long cylinder, and purified to the cleanest state. Then, the cooling wastewater is recycled through the return pipe to save water resources and reduce the input cost of cooling liquid in the metallurgical process.

Description of drawings

1 is a schematic diagram of the external structure of a wastewater purifier for metallurgical wastewater treatment according to the present invention;

Fig. 2 is the structural representation of purification tank and sedimentation tank of the present invention;

Fig. 3 is the structural representation of the purification tank of the present invention;

Fig. 4 is the structural representation of the sedimentation tank of the present invention;

5 is a schematic structural diagram of a motor and a dirt guide mechanism of the present invention;

6 is a schematic structural diagram of a flow guide assembly and a reverse flow mechanism of the present invention;

7 is a schematic structural diagram of a flow guide assembly of the present invention;

FIG. 8 is a schematic structural diagram of the reverse flow mechanism of the present invention.

In the picture: 1. Bottom of inverted bucket; 2. Purification tank; 21. Long cylinder; 22. Backflushing pipe; 23. Cold water inlet pipe; 24. Sewage pipe one; 25. Heat exchange ring; , top tank body; 32, inlet pipe; 33, water level rod; 34, sewage pipe two; 35, baffle plate; 36, guide pipe; 4, cover; 5, motor; 6, filter material layer; 7, guide Dirt mechanism; 71, hollow cylinder; 72, paddle; 73, guide assembly; 731, short pipe; 732, threaded pipe one; 733, retention bucket; 734, inclined guide fan; 74, storage ball; 75, reflux Mechanism; 751, card board; 752, boom; 753, hanging hammer; 754, guide piece; 76, threaded pipe two; 8, return water pipe; 9, heat recovery pipe.

Detailed ways

Example 1

As shown in Figure 1, Figure 2 and Figure 5, the present invention provides a technical solution: a waste water purifier for metallurgical waste water treatment, comprising an inverted bucket bottom 1, the upper end of the inverted bucket bottom 1 is provided with a purification tank 2, and the purification tank 2 A sedimentation tank 3 is installed on the upper end, a cover 4 is arranged on the upper end of the sedimentation tank 3, a motor 5 is installed in the middle of the upper end of the cover 4, a filter material layer 6 is installed on the inner side of the purification tank 2, and a pollution guide mechanism 7 is installed on the upper end of the filter material layer 6, A water return pipe 8 is connected on one side of the surface of the inverted bucket bottom 1, and a heat return pipe 9 is connected on the other side of the surface of the inverted bucket bottom 1. The interior of the inverted bucket bottom 1 is hollow, and the filter material layer 6 is provided with a pebble cushion from top to bottom , a first-level silica sand filter material layer and a second-level silica sand filter material layer, the purification tank 2 includes a long cylindrical body 21, the lower surface of the long cylindrical body 21 is connected with a recoil pipe 22, and the upper surface of the long cylindrical body 21 is connected with a cold water inlet pipe 23. The other side of the surface of the long cylindrical body 21 is connected with a sewage pipe one 24, the inner wall of the long cylindrical body 21 is provided with an annular cylindrical cavity, and the inner wall surface of the annular cylindrical cavity is connected with a number of heat exchange rings 25 at equal distances. The recoil pipe 22 penetrates the inner wall of the long cylinder 21 and extends into the inner side of the long cylinder 21, and the inner wall of the long cylinder 21 is arranged in a funnel shape near the lower port, and the cold water enters the pipe. 23 penetrates through the inner wall of the long cylinder body 21 and extends into the inner side of the annular cylinder cavity. The pebble cushion layer, the primary silica sand filter material layer and the secondary silica sand filter material layer are sequentially fitted into the funnel part installed on the inner wall of the long cylinder body 21 from top to bottom. The heat return pipe 9 runs through the bottom of the bucket 1 and the long cylinder 21 in sequence and extends into the inner side of the annular cylinder cavity.

When in use, the cooling wastewater is transported into the sedimentation tank 3 for a period of static precipitation, and then transported into the purification tank 2. The motor 5 is started to drive the sewage guide mechanism 7 to stir the cooling wastewater, and the sewage guide mechanism 7 Part of the fine particles are collected in the storage ball 74, and then another part of the fine particles in the cooling wastewater is filtered layer by layer through the filter material layer 6, and finally purified and retained at the bottom of the long cylinder 21, and recycled through the return pipe 8 for reuse. , to complete the purification and recycling of cooling wastewater by the wastewater purifier;

By guiding the cooling waste water to the inside of the long cylinder 21, cold water can be fed into the annular cylinder cavity through the cold water inlet pipe 23, and the heat exchange ring 25 is used to increase the contact area between the cold water and the inner wall of the annular cylinder cavity. The residual heat contained in the waste water is exchanged into the cold water, and finally the heated cold water is recycled through the heat recovery pipe 9. While the cooling waste water is purified and filtered, the waste heat in the cooling waste water is recycled and used, and the value of the cooling waste water is recovered. maximize;

Purified water can be transported to the inside of the long cylinder 21 through the backflush pipe 22 to backwash the filter material layer 6 inside the long cylinder 21, and clean water can be injected into the sedimentation tank inside the top tank 31 through the inlet pipe 32 at the same time. Then, by starting the suction pump on the diversion pipe 36, the inner side of the long cylinder body 21 is washed by the upper port of the long cylinder body 21, and the sewage guiding mechanism 7 is controlled by the motor 5 to rotate on the inner side of the long cylinder body 21, so that the filter material layer can be removed. Most of the particles on the inner side are collected in the storage ball 74, and finally discharged through the sewage pipe 1 24 to realize the automatic backwash cleaning function of the cooling wastewater purifier, and save the labor cost of disassembling the internal structure for cleaning and maintenance.

Example 2

As shown in Figure 1, Figure 2 and Figure 4, the sedimentation tank 3 includes a top tank body 31. The inner wall of the top tank body 31 is hollow and communicated with the annular cylinder cavity. The upper surface of the cover 4 is connected with an inlet pipe 32. A water level rod 33 is installed on the inner side of the body 31, a floating ball is installed at the bottom end of the water level rod 33, and a sewage pipe 2 34 is connected to the surface of the top tank body 31. A diversion pipe 36 is fixedly installed, and the inner side of the top tank body 31 is divided into a sedimentation chamber and a drainage chamber through the cooperation of the bottom plate and the partition plate 35. The cover 4 is installed on the upper end flange of the top tank body 31 through the screw rod, the second sewage pipe 34 penetrates the top tank body 31 and is level with the bottom plate inside the top tank body 31, the guide pipe 36 is installed with a suction pump, and the water level rod 33 is connected to the bottom of the top tank body 31. A sealing ring is installed at the overlapping part of the cover 4, the water level rod 33 is installed up and down with the cover 4 through the sealing ring, a circular opening is provided on the bottom plate inside the top tank body 31, and the lower end of the guide pipe 36 is matched with the circular opening correspondingly, and the length is long. A closed water ring is fitted and installed between the cylinder body 21 and the top tank body 31 , and the upper end of the long cylinder body 21 is mounted on the lower end flange of the top tank body 31 through a screw rod.

When in use, the cooling wastewater is added to the sedimentation chamber through the inlet pipe 32 for precipitation, and then the precipitated cooling wastewater is pumped into the long cylinder 21 through the suction pump on the diversion pipe 36, wherein, when the cooling wastewater is input into the sedimentation chamber, Through the water level rod 33 on the floating ball, it is possible to intuitively know whether the weight of the added cooling waste water reaches the maximum value, so as to prevent the cooling waste water from overflowing, and at the same time, through the overlapping position of the water level rod 33 and the cover 4 to provide a gap that communicates with the outside world, Keep the air pressure inside the top tank 31 the same as the outside air pressure. After the cooling wastewater in the sedimentation chamber is drained cleanly, the precipitated coarse particles can be automatically discharged by opening the second sewage pipe 34, and the sedimentation chamber can also be flushed through the inlet pipe 32. , without opening the top tank body 31, it is possible to easily clean the stains on the inside of the top tank body 31, saving manpower and material resources, and simplifying the overall maintenance and cleaning process of the purifier.

Example 3

As shown in FIGS. 5 , 6 , 7 and 8 , the contamination guide mechanism 7 includes a hollow cylinder 71 , and a paddle 72 is fixedly connected to the surface of the hollow cylinder 71 , which can agitate and drain the cooling wastewater and guide the distribution of fine particles. The lower end of the hollow cylinder 71 is installed with a number of guide components 73, and the storage ball 74 is installed at the lower end of the hollow cylinder 71. The inner side of the hollow cylinder 71 is installed with a reverse flow mechanism 75, and the upper port of the storage ball 74 is fitted with a bearing. The upper end is connected with the second threaded pipe 76, the receiving ball 74 is installed in combination with the hollow cylinder 71 through the cooperation of the bearing and the second threaded pipe 76, the rotating shaft at the lower end of the motor 5 sequentially penetrates the cover 4, the bottom plate inside the top tank body 31 and extends into the long cylinder The inner side of the body 21 is convenient to hoist the pollution guide mechanism 7 as a whole on the bottom end of the top tank body 31 and the inner side of the long cylinder body 21, wherein the parts where the rotating shaft rod and the cover 4 and the bottom plate inside the top tank body 31 overlap are installed with bearings. The upper end of the hollow cylinder 71 is rotatably installed with the motor 5 through the rotating shaft, the sewage pipe 1 24 penetrates the long cylinder 21 and extends to the inside of the storage ball 74, and the surface of the storage ball 74 is provided with a number of one-way water seepage holes, which is convenient for entering the storage ball 74 The cooling waste water on the inner side is led out in time. The diversion assembly 73 includes a short pipe 731. The upper port of the short pipe 731 is connected with a threaded pipe 732, and the surface of the short pipe 731 is connected with a retention bucket 733 and a fan opening on the surface of the short pipe 731. The inner wall of the fan mouth is connected obliquely with an oblique guide fan 734, which captures and drains part of the fine particles in the cooling waste water running in a vortex to the fan mouth. The tube 731 is matched with the oblique guide fan 734, the short tube 731 is installed in combination with the hollow cylinder 71 through the threaded tube 1 732, and the short tube 731 and the inner side of the hollow cylinder 71 are both hollow, and the hollow cylinder 71 passes through the rotating shaft rod at the lower end of the motor 5. It is hung and installed on the upper end of the filter material layer 6. The reverse flow mechanism 75 includes a card plate 751. The surface of the card plate 751 is provided with a dirt guide hole, which is convenient to guide and transport some fine particles to the inner side of the storage ball 74. The lower end of the card plate 751 is connected with a The hanging rod 752, the lower end of the hanging rod 752 is connected with a hanging hammer 753, which increases the weight of the bottom of the reverse flow mechanism 75 on the inner side of the second threaded pipe 76, and is used to ensure the resistance of the guide piece 754 to water pressure. The surface of the hanging hammer 753 is in a circular array A guide piece 754 is connected to guide the fine particles into the inner side of the storage ball 74 in a spiral shape, and the fine particles can only be introduced and collected by complying with the reverse direction of the guide piece 754 to prevent the collected fine particles from being reversed from the storage ball 74 . Leakage to the backflow, the clamping plate 751 is fitted and installed on the inside of the hollow cylinder 71, and the hanging hammer 753 is installed in combination with the second threaded pipe 76 through the cooperation of the hollow cylinder 71 and the receiving ball 74. Combined with the tight fit between the guide piece 754 and the second threaded pipe 76, To achieve better anti-backflow function.

When in use, by starting the motor 5 to drive the pollution guide mechanism 7 to rotate inside the purification tank 2, and using the paddle 72 to drive the cooling waste water to rotate inside the long cylinder 21, the cooling waste water can be drained on the filter material layer 6 in the form of a vortex. During operation, part of the fine particles in the cooling wastewater can be guided and stored inside the short tube 731 through the oblique guide fan 734 connected to the inner wall of the fan opening, and communicated with the inside of the storage ball 74 through the short tube 731 and the hollow cylinder 71, and finally the fine particles The particles are collected in the storage ball 74, and then the fine particles can be discharged uniformly through the sewage pipe-24;

The remaining fine particles in the cooling wastewater pass through the swirling water flow form, so that the cooling wastewater is fully contacted with the filter material layer 6, and finally filtered layer by layer to the lowermost side of the long cylinder 21, purified to the cleanest state, and then Through the return pipe 8, it can be re-transported to the original cooling liquid return pipe for recycling, saving water resources and reducing the input cost of cooling liquid in the metallurgical process.

Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art and related fields without creative work shall fall within the protection scope of the present invention. The structures, devices and operation methods that are not specifically described and explained in the present invention are implemented according to conventional means in the art unless otherwise specified and limited.

Claims (5)

1. The utility model provides a metallurgical waste water clarifier for waste water treatment, includes hopper bottom (1), its characterized in that: the improved sewage treatment device is characterized in that a purification tank (2) is arranged at the upper end of the inverted bucket bottom (1), a sedimentation tank (3) is arranged at the upper end of the purification tank (2), a sealing cover (4) is arranged at the upper end of the sedimentation tank (3), a motor (5) is arranged in the middle of the upper end of the sealing cover (4), a filter material layer (6) is arranged on the inner side of the purification tank (2), a sewage guide mechanism (7) is arranged at the upper end of the filter material layer (6), one side of the surface of the inverted bucket bottom (1) is connected with a water return pipe (8), the other side of the surface of the inverted bucket bottom (1) is connected with a heat return pipe (9), the interior of the inverted bucket bottom (1) is hollow, and a pebble cushion layer, a primary silica sand filter material layer and a secondary silica sand filter material layer are sequentially arranged from top to bottom on the filter material layer (6);

the purification tank (2) comprises a long barrel body (21), a back flushing pipe (22) is connected to the lower side of the surface of the long barrel body (21), a cold water inlet pipe (23) is connected to the upper side of the surface of the long barrel body (21), a first sewage discharge pipe (24) is connected to the other side of the surface of the long barrel body (21), an annular barrel cavity is formed in the inner wall of the long barrel body (21), and a plurality of heat exchange rings (25) are connected to the surface of the inner wall of the annular barrel cavity at equal intervals;

the dirt guiding mechanism (7) comprises a hollow cylinder (71), paddles (72) are fixedly connected to the surface of the hollow cylinder (71), a plurality of flow guide assemblies (73) are installed at the lower end of the hollow cylinder (71), and a containing ball (74) is installed at the lower end of the hollow cylinder (71), a reverse flow mechanism (75) is installed on the inner side of the hollow cylinder (71), a bearing is installed at an upper end opening of the containing ball (74) in an embedded mode, a threaded pipe II (76) is connected to the upper end of the bearing, and the containing ball (74) is installed with the hollow cylinder (71) in a combined mode through the matching of the bearing and the threaded pipe II (76);

a rotating shaft rod at the lower end of the motor (5) sequentially penetrates through the sealing cover (4) and the bottom plate on the inner side of the top tank body (31) and extends into the inner side of the long cylinder body (21), bearings are arranged at the positions of the rotating shaft rod, which are overlapped with the sealing cover (4) and the bottom plate on the inner side of the top tank body (31), the upper end of the hollow cylinder (71) is rotatably arranged with the motor (5) through the rotating shaft rod, the first sewage discharge pipe (24) penetrates through the long cylinder body (21) and extends to the inner side of the storage ball (74), and a plurality of one-way water seepage holes are formed in the surface of the storage ball (74);

the flow guide assembly (73) comprises a short pipe (731), the upper port of the short pipe (731) is connected with a first threaded pipe (732), the surface of the short pipe (731) is connected with a retention bucket (733) and a fan opening formed in the surface of the short pipe (731), the inner wall of the fan opening is connected with an inclined guide fan (734) in an inclined mode, the inclined guide fan (734) and the blades (72) are in the same direction, the retention bucket (733) is correspondingly matched with the inclined guide fan (734) through the short pipe (731), the short pipe (731) is assembled and installed with the hollow cylinder (71) through the first threaded pipe (732), the inner sides of the short pipe (731) and the hollow cylinder (71) are both arranged in a hollow mode, and the hollow cylinder (71) is installed at the upper end of a shaft lever of the filter material layer (6) through the rotating and hanging mode of the lower end of the motor (5);

the backflow mechanism (75) comprises a clamping plate (751), wherein a dirt guide hole is formed in the surface of the clamping plate (751), a hanging rod (752) is connected to the lower end of the clamping plate (751), hanging hammers (753) are connected to the lower end of the hanging rod (752), guide pieces (754) are connected to the surface of the hanging hammers (753) in a circular array mode, the clamping plate (751) is installed on the inner side of a hollow barrel (71) in a jogged mode, and the hanging hammers (753) are installed on a threaded pipe II (76) in a combined mode through matching of the hollow barrel (71) and storage balls (74).

2. A waste water purifier for metallurgical waste water treatment according to claim 1, characterized in that: the utility model discloses a long barrel (21) bottom is through lead screw and the end of fighting (1) upper end flange mounting, back flush pipe (22) run through long barrel (21) inner wall and stretch into long barrel (21) inboardly, just long barrel (21) inner wall is close to down the port and is lou hopper-shaped setting, cold water advances pipe (23) to run through long barrel (21) inner wall and stretch into annular barrel chamber inboard, cobble bed course, one-level silica sand filtering material layer, second grade silica sand filtering material layer are by last to lower in proper order the gomphosis install the funnel portion on long barrel (21) inner wall, backheat pipe (9) run through in proper order at the end of the fighting (1), long barrel (21) and stretch into annular barrel chamber inboard, wet return (8) run through at the end of the fighting (1), long barrel (21) and stretch into long barrel (21) inboard.

3. A waste water purifier for metallurgical waste water treatment according to claim 1, characterized in that: sedimentation tank (3) are including a jar body (31), a jar body (31) inner wall is cavity setting and is linked together with annular cylinder chamber, closing cap (4) upper end surface is connected with import pipe (32), a water level pole (33) is installed to a jar body (31) inboard, the floater is installed to water level pole (33) bottom, just a jar body (31) surface is connected with blow off pipe two (34), fixedly connected with baffle (35) on a jar body (31) inboard bottom plate, baffle (35) middle part fixed mounting has honeycomb duct (36).

4. A waste water purifier for metallurgical waste water treatment according to claim 3, characterized in that: the top jar of body (31) is inboard to be divided into drip chamber and drainage room through bottom plate and baffle (35) cooperation, import pipe (32) run through closing cap (4) and be linked together with the drip chamber of the top jar of body (31) inboard, closing cap (4) are through lead screw and the installation of the upper end flange of the top jar of body (31), blow off pipe two (34) run through the top jar of body (31) and hold flat mutually with the bottom plate of the top jar of body (31) inboard, install the suction pump on honeycomb duct (36).

5. A waste water purifier for metallurgical waste water treatment according to claim 4, characterized in that: the sealing ring is installed with the position of closing cap (4) coincidence in water level pole (33), water level pole (33) are through sealing ring and closing cap (4) lift installation, the round mouth has been seted up on the bottom plate of the jar body (31) inboard of top, honeycomb duct (36) lower extreme and the corresponding cooperation of round mouth, the water ring that closes is installed to gomphosis between the long barrel (21) and the jar body (31) of top, lead screw and the jar body (31) lower extreme flange mounting are passed through to long barrel (21) upper end.

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