CN210683563U

CN210683563U - Calcium fluoride wet sludge treatment production device

Info

Publication number: CN210683563U
Application number: CN201921446050.7U
Authority: CN
Inventors: 林高
Original assignee: Baoying Environmental Protection Technology (hangzhou) Co Ltd
Current assignee: Baoying Environmental Protection Technology (hangzhou) Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-06-05
Anticipated expiration: 2029-09-02

Abstract

Wet sludge treatment apparatus for producing of calcium fluoride, the high temperature air stove provides high temperature air, and mud heating reducing mechanism is smashed the mud heating, has installed the box-packed device of dust removal additional in the sack dust collector, and heat transfer exhaust apparatus's structure is: the exhaust pipe of the dust cylinder consists of a lower exhaust pipe and an upper exhaust pipe, and the air exhaust fan is arranged on the upper exhaust pipe; the box body is square, the left end and the right end of the box body are open, the left end of the box body is communicated with an air feeder air inlet pipe of an air feeder, a plurality of heat exchange fins are formed on each heat exchange tube, and the heat exchange tubes are welded and fixed on a top plate and a bottom plate of the box body and extend out of the outer surfaces of the top plate and the bottom plate of the box body; the high-temperature air furnace has the advantages of simple structure, high heat exchange efficiency and low equipment cost. The heat exchange exhaust device can replace the heat energy in the exhaust pipe into the inlet air of the air inlet fan, thereby saving energy and recycling the heat energy. The bag-type dust collector reduces the complete dependence of dust on dust removal of the dust-proof bag, thereby prolonging the service life of the dust-proof bag.

Description

Calcium fluoride wet sludge treatment production device

Technical Field

The invention relates to the technical field of sludge treatment, in particular to equipment for treating calcium fluoride wet sludge.

Background

The high-temperature air used in the existing calcium fluoride sludge treatment production line is fresh air on an air feeder, and the fresh air is heated and then enters a sludge crushing and drying cylinder after flowing through a heat exchanger. 1. The conventional heat exchanger is difficult to heat the air to about 700 ℃, and although the heat exchanger with good effect is sold in the market, the equipment cost is high, and the structure is complex. 2. The waste gas after drying the sludge also contains a large amount of heat energy, and the heat energy is directly discharged without being utilized, so that energy waste is caused. Although water spray cooling towers can recover a portion of the heat energy, the heat energy recovery efficiency is low. The conventional heat exchanger can replace the heat energy in the exhaust pipe, but the conventional heat exchanger has the problem of inconvenient installation.

The dust removal device used on the existing calcium fluoride sludge treatment production line adopts a dustproof cloth bag to filter dust, and has the defects that: the dust-proof cloth bag needs to be replaced frequently, the service life is short, and in order to solve the problem, a plurality of methods are thought, but the effect is not good all the time.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a calcium fluoride wet sludge treatment production device which is simple in structure, high in heat exchange efficiency and low in equipment cost and is beneficial to reducing the sludge treatment production cost. The heat exchange exhaust device can replace the heat energy in the exhaust pipe into the inlet air of the air inlet fan, thereby saving energy and recycling the heat energy. Meanwhile, the heat exchanger is convenient to install and high in heat exchange efficiency. The bag-type dust collector reduces the complete dependence of dust on dust removal of the dust-proof bag, thereby prolonging the service life of the dust-proof bag.

The technical solution of the invention is as follows:

wet sludge treatment apparatus for producing of calcium fluoride, including high temperature air stove and mud heating reducing mechanism, the structure of high temperature air stove is: the furnace body is built by refractory bricks, a left furnace body air inlet and a right furnace body air outlet are formed on the furnace body, the heating body is formed by a block-shaped body on which a plurality of upright posts are formed, the block-shaped body is built on the furnace body, the lower surface of the block-shaped body is exposed in the air, and the flame of the natural gas stove is opposite to the block-shaped body for heating;

the cross section of each upright post is oval, oblique holes are formed in the upright posts, and the directions of the oblique holes in two adjacent upright posts from left to right are opposite;

the air outlet pipe of the air feeder is communicated with the left air inlet of the furnace body, and the high-temperature air outlet pipe is communicated with the right air outlet of the furnace body;

the block body and the upright post are made of aluminum alloy materials and are integrally formed, and the block body and the furnace body are sealed by refractory clay;

the structure of the sludge heating and crushing device is as follows: a partition plate is fixed at the lower part of the tower body, the tower body is fixed on a support frame, a crushing motor is fixed on the support frame, a rotating shaft of the crushing motor penetrates through the partition plate and extends into the tower body, an outer ring of a bearing is fixed on the partition plate, an inner ring of the bearing is fixed with the rotating shaft of the crushing motor, and a stirring frame and a crushing blade are fixed on the rotating shaft of the crushing motor from top to bottom;

the sludge feeding pipe is communicated with the tower body, the high-temperature air outlet pipe is communicated with the tower body, the first discharging pipe is communicated with the upper part of the tower body, the high-temperature air outlet pipe faces the stirring frame and the crushing blade, and the discharge port of the sludge feeding pipe is positioned above the stirring frame;

the blanking barrel device has the structure that: the upper part of the blanking barrel is cylindrical, the lower part of the blanking barrel is conical, a blanking barrel blanking pipe is formed at the lower end of the blanking barrel or fixed on the lower end of the blanking barrel, a blanking fan is arranged on the blanking barrel blanking pipe, the first discharging pipe is communicated with the blanking barrel 3, the second discharging pipe is communicated with the upper end of the blanking barrel, and the first dust collecting tank is arranged below the blanking pipe of the blanking barrel and opposite to the blanking pipe of the blanking barrel;

the structure of the cloth bag dust removal device is as follows: the second discharge pipe is communicated with the lower part of the dustproof barrel body, a dustproof cloth bag is fixed in the dustproof barrel body, the upper end of the dustproof barrel body is communicated with a dustproof barrel exhaust pipe, and the second dust receiving tank is arranged right below the dustproof barrel body; be fixed with dust removal box-packed putting in the dustproof barrel, the structure of dust removal box-packed putting is: the dust collection box comprises a dust collection box air inlet pipe, a first dust collection box, a second dust collection box, a third dust collection box and a dust collection pipe, wherein the first dust collection box is communicated with the dust collection box air inlet pipe, the first dust collection box is arranged in the second dust collection box, the second dust collection box is arranged in the third dust collection box, the first dust collection box is provided with a first smoke outlet and a first dust collection port, the second dust collection box is provided with a second smoke outlet and a second dust collection port, and the third dust collection box is provided with a third smoke outlet and a third dust collection port;

the first dust return port is positioned at the bottom of the first dust return box, the second dust return port is positioned at the bottom of the second dust return box, the third dust return port is positioned at the bottom of the third dust return box, the first dust return port, the second dust return port and the third dust return port are opposite, and the third dust return port is communicated with a dust return pipe;

a supporting plate is formed on the inner wall of the dustproof barrel, a third dust return box is inserted and sleeved in the dustproof barrel, the lower end face of the third dust return box is pressed on the supporting plate, the outer diameter face of the third dust return box is welded with the inner diameter face of the dustproof barrel in a sealing mode, and the lower end of a dust return pipe extends out of a dust outlet in the lower end of the dustproof barrel; a dustproof cylinder cover is fixed at the upper end of the dustproof cylinder body, and a dustproof cylinder exhaust pipe is fixed on the dustproof cylinder cover;

the structure of the heat exchange exhaust device is as follows: the exhaust pipe of the dust cylinder consists of a lower exhaust pipe and an upper exhaust pipe, and the air exhaust fan is arranged on the upper exhaust pipe;

the box body is square, the left end and the right end of the box body are open, the left end of the box body is communicated with an air feeder air inlet pipe of an air feeder, a plurality of heat exchange fins are formed on each heat exchange tube, and the heat exchange tubes are welded and fixed on a top plate and a bottom plate of the box body and extend out of the outer surfaces of the top plate and the bottom plate of the box body;

the upper end and the lower end of the lower exhaust pipe are respectively provided with a lower exhaust pipe lower method half disc and a lower exhaust pipe upper flange disc, the lower exhaust pipe upper flange disc of the lower exhaust pipe is fixed on the bottom plate of the box body through screws, and the lower gasket is clamped between the lower exhaust pipe upper flange disc and the bottom plate of the box body;

an upper exhaust pipe flange is formed at the lower end of the upper exhaust pipe, the upper exhaust pipe flange is fixed on a top plate of the box body through screws, an upper gasket is clamped between the upper exhaust pipe flange and the top plate of the box body, the lower part of the upper exhaust pipe covers the upper ends of all heat exchange tubes, the lower exhaust pipe covers the lower ends of all heat exchange tubes, and a lower exhaust pipe lower half disc is fixed at the upper end of the dustproof barrel body through screws and communicated with the dustproof barrel body.

The air outlet pipe of the air feeder is inserted in the left air inlet of the furnace body, and the air outlet pipe of the air feeder is sealed with the furnace by refractory mortar; the high-temperature air outlet pipe is inserted and sleeved in the right air outlet of the furnace body, and the high-temperature air outlet pipe and the furnace body are sealed by refractory clay.

The upper part of the dustproof cylinder body is cylindrical, the third dust return box is cylindrical, and the lower part of the dustproof cylinder body is a conical cylinder body; at least three third smoke outlets are formed on the third dust return box.

The lower end of the dust removal box air inlet pipe extends into the conical cylinder at the lower part of the dustproof cylinder.

The lower exhaust pipe and the upper exhaust pipe are round pipes, and an opening at the right end of the box body is communicated with the atmosphere.

The invention has the beneficial effects that:

the high-temperature air furnace has the advantages of simple structure, high heat exchange efficiency and low equipment cost, and is favorable for reducing the production cost of sludge treatment. The heat exchange exhaust device can replace the heat energy in the exhaust pipe into the inlet air of the air inlet fan, thereby saving energy and recycling the heat energy. Meanwhile, the heat exchanger is convenient to install and high in heat exchange efficiency. The bag-type dust collector reduces the complete dependence of dust on dust removal of the dust-proof bag, thereby prolonging the service life of the dust-proof bag.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a high temperature air furnace;

FIG. 3 is a schematic view of the structure of a heating body in the high temperature air furnace;

FIG. 4 is a schematic structural view of a center pillar of the high temperature air furnace;

FIG. 5 is a schematic structural view of a sludge heating and pulverizing apparatus;

FIG. 6 is a schematic structural view of a blanking drum device;

FIG. 7 is a schematic structural diagram of a bag-type dust collector;

FIG. 8 is a schematic structural view of a dust-removing box device in the cloth bag dust-removing device;

fig. 9 is a schematic structural diagram of a heat exchange exhaust device.

In the figure: 1. a high temperature air furnace; 2. a sludge heating and crushing device; 3. a blanking drum device; 4. a bag type dust collector; 5. and a heat exchange exhaust device.

Detailed Description

Example (b): as shown in fig. 1 to 9, the calcium fluoride wet sludge treatment production device comprises a high-temperature air furnace 1 and a sludge heating and crushing device 2, wherein the high-temperature air furnace 1 has the structure that: the furnace body 14 is built by refractory bricks, a left furnace body air inlet 141 and a right furnace body air outlet 142 are formed on the furnace body 14, the heating body 15 is formed by forming a plurality of upright posts 152 on a block-shaped body 151, the block-shaped body 151 is built on the furnace body 14, the lower surface of the block-shaped body 151 is exposed in the air, and the flame of the natural gas stove 11 is opposite to the block-shaped body 151 for heating;

the cross section of each upright column 152 is oval, the upright columns 152 are provided with oblique holes 1521, and the oblique holes 1521 of two adjacent upright columns 152 from left to right are opposite in orientation;

a blower air outlet pipe 121 of the blower 12 is communicated with a left air inlet 141 of the furnace body, and a high-temperature air outlet pipe 13 is communicated with a right air outlet 142 of the furnace body;

the block body 151 and the upright post 152 are made of aluminum alloy materials and are integrally formed, and the block body 151 and the furnace body 14 are sealed by refractory mortar;

the sludge heating and crushing device 2 has the structure that: a partition plate 26 is fixed at the lower part of the tower body 21, the tower body 21 is fixed on a support frame 22, a crushing motor 23 is fixed on the support frame 22, a rotating shaft of the crushing motor 23 penetrates through the partition plate 26 and extends into the tower body 21, an outer ring of a bearing 27 is fixed on the partition plate 26, an inner ring of the bearing 27 is fixed with the rotating shaft of the crushing motor 23, and a stirring frame 24 and a crushing blade 25 are fixed on the rotating shaft of the crushing motor 23 from top to bottom;

the sludge feeding pipe 28 is communicated with the tower body 21, the high-temperature air outlet pipe 13 is communicated with the tower body 21, the first discharging pipe 29 is communicated with the upper part of the tower body 21, the high-temperature air outlet pipe 13 faces the stirring frame 24 and the crushing blade 25, and the discharging port of the sludge feeding pipe 28 is positioned above the stirring frame 24;

the blanking barrel device 3 has the following structure: the upper part of the blanking cylinder 31 is cylindrical, the lower part of the blanking cylinder 31 is conical, a blanking cylinder blanking pipe 32 is formed or fixed at the lower end of the blanking cylinder 31, a blanking fan 33 is installed on the blanking cylinder blanking pipe 32, the first discharging pipe 29 is communicated with the upper part of the blanking cylinder 31, the second discharging pipe 34 is communicated with the upper end of the blanking cylinder 31, and the first dust collecting tank 35 is arranged below the blanking cylinder blanking pipe 32 and is opposite to the blanking cylinder blanking pipe 32;

the structure of the cloth bag dust removing device 4 is as follows: the second discharge pipe 34 is communicated with the lower part of the dustproof cylinder body 41, a dustproof cloth bag 43 is fixed in the dustproof cylinder body 41, the upper end of the dustproof cylinder body 41 is communicated with a dustproof cylinder exhaust pipe 44, and the second dust receiving tank 42 is arranged right below the dustproof cylinder body 41; a dust removal box device 46 is fixed in the dust removal cylinder 41, and the structure of the dust removal box device 46 is as follows: the dust collection box consists of a dust collection box inlet pipe 461, a first dust collection box 462, a second dust collection box 463, a third dust collection box 464 and a dust collection pipe 465, wherein the first dust collection box 462 is communicated with the dust collection box inlet pipe 461, the first dust collection box 462 is arranged in the second dust collection box 463, the second dust collection box 463 is arranged in the third dust collection box 464, the first dust collection box 462 is provided with a first smoke exhaust port 462a and a first dust collection port 462b, the second dust collection box 463 is provided with a second smoke exhaust port 463a and a second dust collection port 463b, and the third dust collection box 464 is provided with a third smoke exhaust port 464a and a third dust collection port 464 b;

the first dust return port 462b is positioned at the bottom of the first dust return box 462, the second dust return port 463b is positioned at the bottom of the second dust return box 463, the third dust return port 464b is positioned at the bottom of the third dust return box 464, the first dust return port 462b, the second dust return port 463b and the third dust return port 464b are opposite, and a dust return pipe 465 is connected to the third dust return port 464 b;

a supporting plate 41a is formed on the inner wall of the dustproof cylinder 41, a third dust return box 464 is inserted in the dustproof cylinder 41, the lower end face of the third dust return box 464 is pressed on the supporting plate 41a, the outer diameter face of the third dust return box 464 is welded with the inner diameter face of the dustproof cylinder 41 in a sealing mode, and the lower end of a dust return pipe 465 extends out of a dust outlet at the lower end of the dustproof cylinder 41; a dustproof cylinder cover 47 is fixed at the upper end of the dustproof cylinder body 41, and a dustproof cylinder exhaust pipe 44 is fixed on the dustproof cylinder cover 47;

the structure of the heat exchange exhaust device 5 is as follows: the dust cylinder exhaust duct 44 is composed of a lower exhaust duct 441 and an upper exhaust duct 442, and the exhaust fan 51 is mounted on the upper exhaust duct 442;

the box body 52 is square, the left end and the right end of the box body 52 are open, the left end of the box body 52 is communicated with a blower air inlet pipe 53 of the blower 12, a plurality of heat exchange fins 55 are formed on each heat exchange pipe 54, and the plurality of heat exchange pipes 54 are welded and fixed on the top plate and the bottom plate of the box body 52 and extend out of the outer surfaces of the top plate and the bottom plate of the box body 52;

a lower exhaust pipe lower half plate 56 and a lower exhaust pipe upper flange plate 513 are formed at the upper end and the lower end of the lower exhaust pipe 441 respectively, the lower exhaust pipe upper flange plate 513 of the lower exhaust pipe 441 is fixed on the bottom plate of the box body 52 through screws, and the lower gasket 57 is clamped between the lower exhaust pipe upper flange plate 513 and the bottom plate of the box body 52;

an upper exhaust pipe flange 58 is formed at the lower end of the upper exhaust pipe 442, the upper exhaust pipe flange 58 is fixed on the top plate of the box body 52 through screws, an upper gasket 59 is clamped between the upper exhaust pipe flange 58 and the top plate of the box body 52, the lower part of the upper exhaust pipe 442 covers the upper ends of all the heat exchange pipes 54, the lower exhaust pipe 441 covers the lower ends of all the heat exchange pipes 54, and the lower exhaust pipe lower half-disc 56 is fixed at the upper end of the dustproof cylinder body 41 through screws and communicated with the dustproof cylinder body 41.

The air outlet pipe 121 of the blower 12 is inserted and sleeved in the left air inlet 141 of the furnace body, and the air outlet pipe 121 of the blower 12 and the furnace body 14 are sealed by refractory mortar; the high-temperature air outlet pipe 13 is inserted and sleeved in the right air outlet 142 of the furnace body, and the space between the high-temperature air outlet pipe 13 and the furnace body 14 is sealed by refractory clay.

The upper part of the dustproof cylinder body 41 is cylindrical, the third dust return box 464 is cylindrical, and the lower part of the dustproof cylinder body 41 is a conical cylinder body; at least three third smoke outlets 464a are formed on the third dust return box 464.

The lower end of the dust-removing box air inlet pipe 461 extends into the conical cylinder at the lower part of the dust-preventing cylinder 41.

The lower exhaust pipe 441 and the upper exhaust pipe 442 are both circular pipes, and the right end opening of the box body 52 is communicated with the atmosphere.

The working principle is as follows: wet calcium fluoride sludge enters the tower body 21 through the sludge feeding pipe 28, the grinding motor 23 drives the stirring frame 24 and the grinding blade 25 to rotate, the wet calcium fluoride sludge is stirred and ground, high-temperature air in the high-temperature air furnace 1 heats the wet calcium fluoride sludge in the tower body 1, moisture in the wet calcium fluoride sludge is vaporized to generate certain other gases and dust, and the water vapor, the other gases and the dust enter the blanking barrel device 3 through the first discharging pipe 29.

The water vapor, other gases and lighter dust entering the blanking drum device 3 enter the bag-type dust collector 4 through the second discharge pipe 34. The blanking fan 33 has a smaller wind force than the suction fan 51, and some of the larger dust is sent into the first dust receiving tank 35 by the impeller of the blanking fan 33.

The water vapor, other gases and lighter dust in the baghouse 4 will fall into the second dust collection tank 42, and the water vapor, other gases and very little dust will enter the dustcup exhaust pipe 44.

After the water vapor, other gases and very little dust are subjected to heat exchange in the heat exchange exhaust device 5, fresh air subjected to heat exchange enters the blower 12.

The natural gas stove 11 heats the heating body 15, and the air from the blower 12 directly exchanges heat with the upright column 152 and the block 151, so that the air is heated quickly and the heat exchange efficiency is high. The air after heat exchange by the heating body 15 flows out from the high-temperature air outlet pipe 13.

The angle between the inclined hole 1521 of the upright post 152 and the horizontal plane is 5 to 15 degrees, and the inclined hole 1521 is arranged on the upright post 152 to increase the contact area between the air and the upright post 152.

The oblique holes 1521 of two adjacent vertical columns 152 from left to right are opposite in direction, so that the air in the furnace body 14 flows curvilinearly, and the air can fully exchange heat with the vertical columns 152.

The high-temperature air heat exchanger on the market needs tens of thousands of yuan, and the heating body of the invention only needs about one thousand yuan, thus saving the equipment cost.

Dust air in the blanking barrel device 3 enters the dust-proof barrel 41 through the second discharge pipe 34, and then enters the dust-proof box air inlet pipe 461, and then enters the first dust-returning box 462 through the dust-proof box air inlet pipe 461, dust in the dust air after partial sludge is subjected to high-temperature heating falls into the second dust-returning box 463 from the first dust-returning port 462b, and similarly dust in the dust air after partial sludge is subjected to high-temperature heating falls into the third dust-returning box 464 from the second dust-returning box 463, and finally dust in the dust air after sludge is subjected to high-temperature heating falls into the second dust-receiving tank 42 from the dust-returning pipe 465. In the second dust collecting tank 42 in the dust air after the majority of sludge is heated at high temperature, only a few parts of sludge need to be filtered by the dust cloth bag 43 and then fall back to the third dust return box 464. Thereby reducing the amount of dust to be filtered by the dust-proof cloth bag 43 and prolonging the service life of the dust-proof cloth bag 43.

The high-temperature waste gas flowing out of the dust-proof cylinder exhaust pipe 44 flows through the heat exchange pipe 54, and the fresh air flowing through the box body 53 exchanges heat with the heat exchange pipe 54 and then enters the blower 12. That is, the original cold air fed by the blower 12 is now changed into hot air through heat exchange, so that the heat energy of the sludge production line is recycled, and the effect of saving energy is achieved.

Claims

1. Wet sludge treatment apparatus for producing of calcium fluoride, including high temperature air furnace (1) and mud heating reducing mechanism (2), its characterized in that:

the structure of the high-temperature air furnace (1) is as follows: a furnace body (14) is built by refractory bricks, a left furnace body air inlet (141) and a right furnace body air outlet (142) are formed on the furnace body (14), a heating body (15) is formed by a block-shaped body (151) with a plurality of upright posts (152), the block-shaped body (151) is built on the furnace body (14), the lower surface of the block-shaped body (151) is exposed in the air, and the flame of a natural gas stove (11) heats the block-shaped body (151);

the cross section of each upright post (152) is oval, oblique holes (1521) are formed in the upright posts (152), and the directions of the oblique holes (1521) in two adjacent upright posts (152) from left to right are opposite;

a blower air outlet pipe (121) of the blower (12) is communicated with a left air inlet (141) of the furnace body, and a high-temperature air outlet pipe (13) is communicated with a right air outlet (142) of the furnace body;

the block-shaped body (151) and the upright column (152) are made of aluminum alloy materials and are integrally formed, and the block-shaped body (151) and the furnace body (14) are sealed by refractory clay;

the sludge heating and crushing device (2) has the structure that: a partition plate (26) is fixed at the lower part of the tower body (21), the tower body (21) is fixed on a support frame (22), a crushing motor (23) is fixed on the support frame (22), a rotating shaft of the crushing motor (23) penetrates through the partition plate (26) and extends into the tower body (21), an outer ring of a bearing (27) is fixed on the partition plate (26), an inner ring of the bearing (27) is fixed with the rotating shaft of the crushing motor (23), and a stirring frame (24) and a crushing blade (25) are fixed on the rotating shaft of the crushing motor (23) from top to bottom;

the sludge feeding pipe (28) is communicated with the tower body (21), the high-temperature air outlet pipe (13) is communicated with the tower body (21), the first discharging pipe (29) is communicated with the upper part of the tower body (21), the high-temperature air outlet pipe (13) faces the stirring frame (24) and the crushing blade (25), and the discharging hole of the sludge feeding pipe (28) is positioned above the stirring frame (24);

the blanking barrel device (3) has the structure that: the upper part of the blanking cylinder body (31) is cylindrical, the lower part of the blanking cylinder body (31) is conical, a blanking cylinder blanking pipe (32) is formed at the lower end of the blanking cylinder body (31) or fixed on the lower end of the blanking cylinder body (31), a blanking fan (33) is installed on the blanking cylinder blanking pipe (32), a first discharge pipe (29) is communicated with the upper part of the blanking cylinder body (31), a second discharge pipe (34) is communicated with the upper end of the blanking cylinder body (31), and a first dust collecting tank (35) is arranged below the blanking cylinder blanking pipe (32) and is opposite to the blanking cylinder blanking pipe (32);

the structure of the cloth bag dust removing device (4) is as follows: the second discharge pipe (34) is communicated with the lower part of the dustproof barrel body (41), a dustproof cloth bag (43) is fixed in the dustproof barrel body (41), the upper end of the dustproof barrel body (41) is communicated with a dustproof barrel exhaust pipe (44), and the second dust receiving tank (42) is arranged right below the dustproof barrel body (41); a dust removal box device (46) is fixed in the dust removal cylinder body (41), and the structure of the dust removal box device (46) is as follows: the dust collection box comprises a dust collection box air inlet pipe (461), a first dust collection box (462), a second dust collection box (463), a third dust collection box (464) and a dust collection pipe (465), wherein the first dust collection box (462) is communicated with the dust collection box air inlet pipe (461), the first dust collection box (462) is arranged in the second dust collection box (463), the second dust collection box (463) is arranged in the third dust collection box (464), the first dust collection box (462) is provided with a first smoke exhaust port (462 a) and a first dust collection port (462 b), the second dust collection box (463) is provided with a second smoke exhaust port (463 a) and a second dust collection port (463 b), and the third dust collection box (464) is provided with a third smoke exhaust port (464 a) and a third dust collection port (464 b);

the first dust return port (462 b) is positioned at the bottom of the first dust return box (462), the second dust return port (463 b) is positioned at the bottom of the second dust return box (463), the third dust return port (464 b) is positioned at the bottom of the third dust return box (464), the first dust return port (462 b), the second dust return port (463 b) and the third dust return port (464 b) are opposite, and a dust return pipe (465) is communicated with the third dust return port (464 b);

a supporting plate (41 a) is formed on the inner wall of the dustproof cylinder (41), a third dust return box (464) is inserted in the dustproof cylinder (41), the lower end face of the third dust return box (464) is pressed on the supporting plate (41 a), the outer diameter face of the third dust return box (464) is welded with the inner diameter face of the dustproof cylinder (41) in a sealing manner, and the lower end of a dust return pipe (465) extends out of a dust outlet at the lower end of the dustproof cylinder (41); a dustproof cylinder cover (47) is fixed at the upper end of the dustproof cylinder body (41), and a dustproof cylinder exhaust pipe (44) is fixed on the dustproof cylinder cover (47);

the structure of the heat exchange exhaust device (5) is as follows: the exhaust pipe (44) of the dust-proof cylinder consists of a lower exhaust pipe (441) and an upper exhaust pipe (442), and the air exhaust fan (51) is arranged on the upper exhaust pipe (442);

the box body (52) is square, the left end and the right end of the box body (52) are open, the left end of the box body (52) is communicated with a blower air inlet pipe (53) of a blower (12), a plurality of heat exchange fins (55) are formed on each heat exchange tube (54), and the heat exchange tubes (54) are welded and fixed on the top plate and the bottom plate of the box body (52) and extend out of the outer surfaces of the top plate and the bottom plate of the box body (52);

a lower exhaust pipe lower half plate (56) and a lower exhaust pipe upper flange plate (513) are formed at the upper end and the lower end of the lower exhaust pipe (441), the lower exhaust pipe upper flange plate (513) of the lower exhaust pipe (441) is fixed on the bottom plate of the box body (52) through screws, and a lower gasket (57) is clamped between the lower exhaust pipe upper flange plate (513) and the bottom plate of the box body (52);

an upper exhaust pipe flange plate (58) is formed at the lower end of the upper exhaust pipe (442), the upper exhaust pipe flange plate (58) is fixed on a top plate of the box body (52) through screws, an upper gasket (59) is clamped between the upper exhaust pipe flange plate (58) and the top plate of the box body (52), the lower portion of the upper exhaust pipe (442) covers the upper ends of all heat exchange pipes (54), the lower exhaust pipe (441) covers the lower ends of all heat exchange pipes (54), and a lower exhaust pipe lower half disc (56) is fixed at the upper end of the dustproof cylinder body (41) through screws and communicated with the dustproof cylinder body (41).

2. The calcium fluoride wet sludge treatment production device according to claim 1, characterized in that: a blower air outlet pipe (121) of the blower (12) is inserted and sleeved in the left air inlet (141) of the furnace body, and the blower air outlet pipe (121) of the blower (12) and the furnace body (14) are sealed by refractory mortar; the high-temperature air outlet pipe (13) is inserted and sleeved in the right air outlet (142) of the furnace body, and the space between the high-temperature air outlet pipe (13) and the furnace body (14) is sealed by refractory clay.

3. The calcium fluoride wet sludge treatment production device according to claim 1, characterized in that: the upper part of the dustproof cylinder body (41) is cylindrical, the third dust return box (464) is cylindrical, and the lower part of the dustproof cylinder body (41) is a conical cylinder body; at least three third smoke outlets (464 a) are formed on the third dust return box (464).

4. The calcium fluoride wet sludge treatment production device according to claim 1, characterized in that: the lower end of the dust removing box air inlet pipe (461) extends into the conical cylinder at the lower part of the dust removing cylinder (41).

5. The calcium fluoride wet sludge treatment production device according to claim 1, characterized in that: the lower exhaust pipe (441) and the upper exhaust pipe (442) are both round pipes, and the right end opening of the box body (52) is communicated with the atmosphere.