A calcination waste gas treatment device for the preparation of manganese pyrophosphate

Abstract

The present invention relates to the field of battery material manufacturing, and in particular to a calcination waste gas treatment device for the preparation of manganese pyrophosphate, including exhaust pipe 1, exhaust pipe 2, a feed pipe, filter 1 and a baffle, etc.; exhaust pipe 1 is fixedly connected to exhaust pipe 2; exhaust pipe 1 and exhaust pipe 2 are internally fixedly connected with a feed pipe, and exhaust pipe 1 and exhaust pipe 2 are internally divided into two exhaust spaces by the feed pipe; each exhaust space is fixedly connected with a filter 1; two receiving grooves are provided at the bottom of exhaust pipe 1; each receiving groove is connected to an exhaust space; and a baffle is rotatably connected to the bottom of each receiving groove. The present invention arranges filter 2 on the scraper, so that when the airflow blows the impurities scraped off by the scraper, the airflow will flow away through filter 2, and the impurities will be intercepted by filter 2, thereby avoiding the problem that the impurities scraped off by the scraper will be blown back to the surface of filter 1 by the airflow.

Description

Technical Field

[0001] The invention relates to the field of battery material manufacturing, and in particular to calcination waste gas treatment equipment for preparing manganese pyrophosphate. Background Art

[0002] Manganese pyrophosphate is an inorganic non-metallic material with a wide range of uses. It is mainly used in catalysis, adsorption, optics and magnetism. Studies have found that manganese pyrophosphate can be used as a high-quality raw material for manufacturing lithium iron manganese phosphate, a positive electrode material for lithium-ion batteries, and has important application value.

[0003] In the existing preparation of manganese pyrophosphate, it is necessary to calcine raw materials to obtain manganese pyrophosphate. Waste gas is generated during the calcination process, and the waste gas needs to be treated before it can be discharged. In addition to harmful gases, the waste gas after calcination also contains impurities generated after calcination. The waste gas treatment device must separate the impurities while treating the waste gas, which makes the waste gas treatment device under a large load and easily causes device failure. Summary of the invention

[0004] In order to overcome the disadvantage that the waste gas treatment device has to separate impurities while treating waste gas, which makes the waste gas treatment device have a large load and easily causes device failure, the present invention provides a calcination waste gas treatment device for the preparation of manganese pyrophosphate.

[0005] The technical implementation scheme of the present invention is: a calcination waste gas treatment equipment for the preparation of manganese pyrophosphate, comprising an exhaust pipe 1, an exhaust pipe 2, a feed pipe, a filter 1, a baffle and a feed auger; the exhaust pipe 1 is fixedly connected to the exhaust pipe 2; the exhaust pipe 1 and the exhaust pipe 2 are both fixedly connected to the feed pipe, and the exhaust pipe 1 and the exhaust pipe 2 are divided into two exhaust spaces by the feed pipe; a filter 1 is fixedly connected to each exhaust space; two receiving grooves are arranged at the bottom of the exhaust pipe 1; each receiving groove is connected to an exhaust space; a baffle is rotatably connected to the bottom of each receiving groove; the feed pipe is connected to the feed auger, The feed auger is composed of a central column and a spiral sheet wound around the outside of the column; it also includes an electric push rod, a connecting plate and a scraper; two grooves are respectively opened on the surface of exhaust pipe 1 and exhaust pipe 2, and the grooves are located on the contact surface of the two. Exhaust pipe 1 and the grooves of the exhaust pipe correspond one to one, and the corresponding grooves after exhaust pipe 1 and the exhaust pipe are combined to form a accommodating space, and an electric push rod is fixedly connected inside each accommodating space; each electric push rod is fixedly connected to a connecting plate, and the connecting plate slides in the accommodating space; each connecting plate is connected to a scraper, and the scraper extends into the adjacent exhaust space, and the scraper is in contact with filter screen 1.

[0006] Furthermore, it also includes a filter screen 2; each scraper is rotatably connected to a filter screen 2 via a torsion spring.

[0007] Furthermore, it also includes a baffle plate 1 and a rotating plate; each receiving groove is provided with a baffle plate 1; the baffle plate 1 is rotatably connected to the rotating plate through a torsion spring, and the baffle plate 1 and the rotating plate together isolate the receiving groove from the exhaust space.

[0008] Furthermore, it also includes a top plate; each scraper is fixedly connected to a plurality of top plates.

[0009] Furthermore, it also includes a stopper; a stopper is fixedly connected to the upper side and the lower side of each connecting plate, and the two stoppers and the connecting plate form a T-shaped mechanism.

[0010] Furthermore, a slope is arranged at the bottom of the scraper.

[0011] Furthermore, it also includes a motor and a cleaning roller; the exhaust pipe is fixedly connected to the motor; the motor rotating part is fixedly connected to the cleaning roller, the cleaning roller passes through all the receiving grooves from front to back, and the surface of the cleaning roller in the receiving groove is provided with bristles.

[0012] Furthermore, it also includes a cylindrical frame and a paddle; the feeding auger in the feeding pipe is fixedly connected to a cylindrical frame, and a plurality of holes are opened on the cylindrical frame, and each hole corresponds to an independent small cavity in the cylindrical frame; and a plurality of paddles are fixedly connected to the cylindrical frame.

[0013] Furthermore, each dial is provided with a curved surface.

[0014] Furthermore, each of the dial plates is fixedly connected to two baffle plates 2.

[0015] The beneficial effect of the present invention is as follows: by arranging filter screen 2 on the scraper, when the airflow blows the impurities scraped off by the scraper, the airflow will flow away through filter screen 2, and the impurities will be intercepted by filter screen 2, thereby avoiding the problem that the impurities scraped off by the scraper will be blown back to the surface of filter screen 1 by the airflow.

[0016] The present invention separates the containing groove from the inside of the exhaust pipe one by a baffle plate one and a rotating plate to shield the containing groove. When the electric push rod pushes the connecting plate and the scraper plate to move downward to clean the surface of the filter one and moves to the bottom of the filter one, the cleaning of the filter one is completed. At this time, the electric push rod continues to push the connecting plate and the scraper plate to move downward, so that the scraper plate pushes the rotating plate downward, and the rotating plate rotates downward to open, so that the scraper plate enters the containing groove, and then the impurities scraped on the scraper plate fall into the containing groove; because the opening opened by the rotating plate is actually very small at this time, and there is only one inlet, there is basically no airflow blowing into the containing groove.

[0017] The present invention blocks the raw materials on the paddle plate by means of the second baffle plate, so that when the paddle plate drives the raw materials to rotate, the raw materials will not fall from the left and right sides of the paddle plate to above the remaining raw materials in the feed pipe, and the raw materials will be guided toward the hole, so that the raw materials on the paddle plate can stably flow into the hole and will not flow out from the side of the paddle plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure disclosed by the calcination waste gas treatment equipment for preparing manganese pyrophosphate of the present invention;

[0019] Figure 2 A schematic diagram of the structure of the containing tank on the exhaust pipe 1 disclosed in the calcination waste gas treatment equipment for preparing manganese pyrophosphate of the present invention;

[0020] Figure 3 A schematic structural diagram of a baffle, an electric push rod, a connecting plate, a baffle 1, a rotating plate and a baffle block disclosed in the calcination waste gas treatment equipment for preparing manganese pyrophosphate of the present invention;

[0021] Figure 4 for Figure 3 A magnified image of point A;

[0022] Figure 5 The schematic diagram of the structure of the cylindrical frame and the paddle plate disclosed in the calcination waste gas treatment equipment for preparing manganese pyrophosphate of the present invention;

[0023] Figure 6 The present invention is a schematic structural diagram of the arc surface on the shifting plate and the baffle 2 disclosed in the calcination waste gas treatment equipment for preparing manganese pyrophosphate.

[0024] In the above drawings: 1-exhaust pipe one, 2-exhaust pipe two, 3-feeding pipe, 4-filter one, 5-blocking door, 6-electric push rod, 7-connecting plate, 8-scraper, 9-filter two, 10-baffle one, 11-rotating plate, 12-top plate, 13-feeding auger, 14-block, 101-motor, 102-cleaning roller, 201-cylindrical frame, 202-push plate, 1a-accommodating groove, 8a-inclined surface, 201a-hole, 202a-arc surface, 202b-baffle two. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0026] A calcination waste gas treatment device for the preparation of manganese pyrophosphate, such as Figure 1-3As shown, it includes an exhaust pipe 1, an exhaust pipe 2, a feed pipe 3, a filter 14, a baffle 5 and a feed auger 13; the exhaust pipe 1 is bolted to the exhaust pipe 2; the exhaust pipe 1 and the exhaust pipe 2 are fixedly connected to the feed pipe 3, and the exhaust pipe 1 and the exhaust pipe 2 are divided into two exhaust spaces by the feed pipe 3; each exhaust space is fixedly connected to a filter 14; two receiving grooves 1a are provided at the bottom of the exhaust pipe 1; each receiving groove 1a is connected to an exhaust space; a baffle 5 is rotatably connected to the bottom of each receiving groove 1a; the feed pipe 3 is connected to the feed auger 13, and the feed auger 13 is composed of a central column and a spiral sheet wound around the outside of the column;

[0027] It also includes an electric push rod 6, a connecting plate 7 and a scraper 8; the surface of the exhaust pipe 1 and the exhaust pipe 2 are respectively provided with two grooves distributed front and back, the grooves are located on the contact surface of the two, the exhaust pipe 1 and the grooves of the exhaust pipe correspond one to one, and the corresponding grooves after the exhaust pipe 1 and the exhaust pipe are combined form a receiving space, and an electric push rod 6 is bolted inside each receiving space; each electric push rod 6 is fixedly connected to a connecting plate 7, and the connecting plate 7 slides in the receiving space; each connecting plate 7 is connected to a scraper 8, and the scraper 8 extends into the adjacent exhaust space, and the scraper 8 contacts the filter screen 4.

[0028] It also includes a filter screen 2 9; each scraper 8 is rotatably connected to a filter screen 2 9 via a torsion spring.

[0029] It also includes a baffle 10 and a rotating plate 11; each receiving groove 1a is provided with a baffle 10; the baffle 10 is rotatably connected to the rotating plate 11 through a torsion spring, and the baffle 10 and the rotating plate 11 together isolate the receiving groove 1a from the exhaust space.

[0030] A top plate 12 is also included; a top plate 12 is fixedly connected to the front and rear sides of each scraper 8 .

[0031] It also includes a stopper 14; a stopper 14 is fixedly connected to the upper side and the lower side of each connecting plate 7, and the two stoppers 14 and the connecting plate 7 form a T-shaped mechanism.

[0032] The scraper 8 is provided with an inclined surface 8a at the bottom, through which the exhaust gas is directed upward, so that the exhaust gas drives the impurities to be blown upward along the inclined surface 8a to the filter screen 2 9.

[0033] It also includes a motor 101 and a cleaning roller 102; the exhaust pipe 1 is bolted to the motor 101; the cleaning roller 102 is fixedly connected to the rotating part of the motor 101, and the cleaning roller 102 passes through all the receiving grooves 1a from front to back, and the surface of the cleaning roller 102 located in the receiving groove 1a is provided with bristles.

[0034] Here is how the above example works:

[0035] First, connect the exhaust pipe 1 and the feed pipe 3 to the calcining furnace, connect the electric push rod 6 to the power supply, assemble the feeding auger and the feed pipe 3 and then connect them to the external feed device, and connect the exhaust pipe 2 to the exhaust gas treatment device.

[0036] When in use, the calcining furnace is controlled to heat up, and after reaching the specified temperature, the feeding device is controlled to feed the raw material into the feeding pipe 3, and the feeding auger is started to rotate clockwise from right to left, so that the raw material is transported to the calcining furnace along the feeding pipe 3 under the push of the feeding auger. When the raw material reaches a sufficient amount, it stops, and then the raw material is calcined through the calcining furnace, and the exhaust gas generated by the calcination is discharged into the exhaust gas treatment device through the exhaust pipe 1 and the exhaust pipe 2. When the calcination is completed, the calcined product is taken out, and then the feeding auger is continued to be controlled to push the raw material into the calcining furnace. This reciprocating process can complete the calcination work.

[0037] However, the flue gas generated after calcination contains a large amount of impurities such as dust and particulate matter. If all of them are discharged into the exhaust gas treatment device for treatment, the impurities in the exhaust gas need to be separated while purifying the exhaust gas, which increases the workload of the exhaust gas treatment device. Therefore, a filter screen 4 is set in the exhaust pipe 1, and impurities such as dust and particulate matter in the waste are intercepted by the filter screen 4, thereby reducing the workload of the exhaust gas treatment device.

[0038] Hereinafter, impurities such as dust and particulate matter are referred to as impurities.

[0039] However, as the filter 4 intercepts impurities in the exhaust gas for a long time, a large amount of impurities will adhere to the surface of the filter 4, causing the filter 4 to be blocked by impurities, affecting the exhaust efficiency of the exhaust gas. Therefore, the connecting plate 7 and the scraper 8 are pushed downward by the electric push rod 6, and scraped downward from the upper part of the filter 4, so that the scraper 8 scrapes the impurities adhered to the surface of the filter 4 downward, and the impurities scraped off by the scraper 8 will fall downward into the receiving groove 1a and be collected, thereby avoiding the problem of the filter 4 being blocked by impurities due to filtering the exhaust gas for a long time.

[0040] Since the electric push rod 6 drives the connecting plate 7 to slide up and down in the exhaust pipe 1, there must be a gap between the connecting plate 7 and the exhaust pipe 1, and the exhaust gas will leak through the gap. Therefore, by arranging a block 14 on the connecting plate 7, the block 14 will block the gap space between the electric push rod 6 and the connecting plate 7 for installing, so as to avoid the problem of exhaust gas leakage through the gap.

[0041] However, if the fan needs to be stopped for cleaning, the production time will be extended due to the restart of the fan, reducing the production efficiency. Therefore, maintenance and cleaning need to be carried out without stopping the machine. Therefore, when it is found that the exhaust gas treatment volume has abnormal fluctuations, the raw material transportation is stopped but the fan is not stopped, so that the circulating gas is clean gas. The clean gas will blow the scraped impurities. When the impurities are scraped off by the scraper 8, they will be squeezed by the wind force and accumulate on the surface of the scraper 8. As the scraper 8 scrapes downward, the accumulated impurities will become more and more. When accumulated to a certain thickness, the stability of the impurities on the surface will become very fragile, causing the surface impurities to be blown by the airflow, and then the impurities on the scraper 8 will be blown to the surface of the filter screen 4 again, affecting the collection of impurities.

[0042] Therefore, by setting filter screen 2 9 on scraper 8, when the airflow blows the impurities scraped off by scraper 8, the airflow will flow through filter screen 2 9, and the impurities will be intercepted by filter screen 2 9, avoiding the problem that the impurities scraped off by scraper 8 will be blown back to the surface of filter screen 1 4 by the airflow.

[0043] Since the containing groove 1a is connected to the inside of the exhaust pipe 1, when the airflow is discharged, the airflow will flow into the containing groove 1a, causing the airflow to blow out the impurities inside the containing groove 1a.

[0044] Therefore, the receiving groove 1a is separated from the interior of the exhaust pipe 1 by the baffle plate 10 and the rotating plate 11, and the receiving groove 1a is blocked. When the electric push rod 6 pushes the connecting plate 7 and the scraper 8 to move downward to clean the surface of the filter 4 and moves to the bottom of the filter 4, the cleaning of the filter 4 is completed. At this time, the electric push rod 6 continues to push the connecting plate 7 and the scraper 8 to move downward, so that the scraper 8 pushes the rotating plate 11 downward, and the rotating plate 11 rotates downward to open, so that the scraper 8 enters the receiving groove 1a, and then the impurities scraped off the scraper 8 fall into the receiving groove 1a; because the opening opened by the rotating plate 11 is actually very small at this time, and there is only one entrance, there is basically no airflow blowing into the receiving groove 1a.

[0045] However, when the scraper 8 pushes the rotating plate 11 to make the rotating plate 11 rotate, the rotating plate 11 will scrape the surface of the scraper 8, causing the impurities on the scraper 8 to be scraped off by the rotating plate 11, and then the fallen impurities are blown by the flowing exhaust gas and blown onto the filter 4 again, affecting the collection of impurities; therefore, when the electric push rod 6 pushes the connecting plate 7 and the scraper 8 to move downward, the scraper 8 drives the top plate 12 to move downward synchronously, and then the top plate 12 pushes the rotating plate 11 downward to make the rotating plate 11 rotate downward and open, thereby avoiding the rotating plate 11 from scraping off the impurities on the surface of the scraper 8, causing the impurities to be blown onto the filter 4 again.

[0046] When the scraper 8 and the filter screen 2 9 enter the containing tank 1a under the push of the electric push rod 6, the airflow is lost and most of the impurities will fall naturally. Some impurities on the surface of the filter screen 2 9 are tightly adhered and cannot fall into the containing tank 1a in time. If no treatment is done, the impurities adhered to the surface of the filter screen 2 9 will be taken out of the containing tank 1a again.

[0047] Therefore, when the scraper 8 and the filter screen 29 enter the containing groove 1a under the push of the electric push rod 6, the control motor 101 drives the cleaning roller 102 to rotate, so that the cleaning roller 102 cleans the scraper 8 and the filter screen 29, removes the impurities adhered to the surface of the filter screen 29, and avoids the problem that the impurities are brought out of the containing groove 1a by the filter screen 29 again; after cleaning, the electric push rod 6 pulls the connecting plate 7, the scraper 8, the filter screen 29 and the top plate 12 to move upward and reset to the top of the filter screen 4. When the top of the filter screen 29 contacts the inner upper side surface of the exhaust pipe 1, under the pressure of the inner upper side surface of the exhaust pipe 1, the filter screen 29 rotates downward around the rotating shaft connected to the scraper 8, and stops when the filter screen 29 rotates to a horizontal level and fits the inner side of the exhaust pipe 1. At this time, the maintenance work is completed. The subsequent resumption of calcination work generates waste gas, and impurities in the waste gas are difficult to adhere to the horizontal surface of the filter 9 to avoid clogging the filter 9, affecting the air flow of the filter 9 and the interception effect of impurities during the subsequent maintenance work.

[0048] When it is necessary to remove impurities in the receiving tank 1a, the collection device is first placed under the baffle 5, and then the operator manually pulls down to open the baffle 5, so that the impurities in the receiving tank 1a slide along the surface of the baffle 5 into the external collection device.

[0049] Since the exhaust gas contains a large amount of heat, direct discharge will cause heat waste. Therefore, by setting the feed pipe 3 in the exhaust pipe 1 and the exhaust pipe 2, the heat in the exhaust gas is used to heat the feed pipe 3, so that the raw materials in the feed pipe 3 can be further dried. Example 2

[0050] On the basis of Example 1, Figure 1-3 and Figure 5-6 As shown, it also includes a cylindrical frame 201 and a paddle 202; the cylindrical frame 201 is fixedly connected to the feeding auger in the feeding pipe 3, and a plurality of holes 201a are opened on the cylindrical frame 201, and each hole 201a corresponds to an independent small cavity in the cylindrical frame 201; a plurality of paddles 202 are fixedly connected to the cylindrical frame 201.

[0051] Each of the paddles 202 is provided with an arc surface 202a. When the paddles 202 drive the raw materials upward, the upper layer of the raw materials slides downward first through the arc surface 202a, thereby turning the raw materials over and making them contact with the hot air more fully.

[0052] Two baffle plates 202 b are fixedly connected to each of the paddle plates 202 , and the baffle plates 202 b block the raw materials on the paddle plates 202 , so that the raw materials can flow toward the holes 201 a better.

[0053] Here is how the above example works:

[0054] Although the raw materials in the conveying pipe 3 are further dried by arranging the conveying pipe 3 in the exhaust pipe 1 and the exhaust pipe 2, since the raw materials are piled up together, when the hot air in the exhaust pipe 1 and the exhaust pipe 2 conducts heat to the conveying pipe 3, the raw materials near the inner surface of the conveying pipe 3 dry faster, while the raw materials near the center of the conveying pipe 3 dry slower, resulting in uneven drying of the raw materials by the hot air, affecting the drying efficiency of the raw materials.

[0055] Therefore, by setting the main column of the feeding auger in the feeding pipe 3 as a hollow cylindrical frame 201, when the feeding auger rotates clockwise from right to left, the cylindrical frame 201 and the paddle 202 rotate synchronously, so that the raw materials in the feeding pipe 3 are moved by the paddle 202, and the paddle 202 paddles part of the raw materials along the feeding pipe 3. When the paddle 202 rotates to an inclined upward state, the raw materials will slide along the surface of the paddle 202 and enter the cylindrical frame 201 through the hole 201a. There is an independent small cavity in the cylindrical frame 201 corresponding to the hole 201a, because the paddle 202 02 will push the raw materials on its moving path into the hole 201a, so after this part of the raw materials are pushed away, the raw materials accumulated around, especially the raw materials accumulated closer to the center of the feeding pipe 3 and not in contact with the inner wall of the feeding pipe 3, will move directly to the vacant area, so that the raw materials that originally did not contact the inner wall of the feeding pipe 3 will contact the inner wall of the feeding pipe 3, thereby enhancing the drying effect of this part of the raw materials; as the feeding auger continues to rotate, the hole 201a will rotate to a downward state, and the raw materials that originally entered the cylindrical frame 201 will be discharged from the hole 201a again at this time. This reciprocating process will cause the raw materials located at the center of the feeding pipe 3 and the raw materials close to the inner side of the feeding pipe 3 to rotate with each other, achieving a uniform drying effect; it should be noted that the height of the raw materials entering the feeding pipe 3 is one-fourth of the inner diameter of the feeding pipe 3, so that there is space inside the feeding pipe 3 for the raw materials to circulate.

[0056] During the above process, the raw materials on the paddle plate 202 are blocked by the baffle plate 202b, so that when the paddle plate 202 drives the raw materials to rotate, the raw materials will not fall from the left and right sides of the paddle plate 202 to the top of the remaining raw materials in the feed pipe 3, and the raw materials will be guided to the hole 201a, so that the raw materials on the paddle plate 202 can stably flow into the hole 201a and will not flow out from the side of the paddle plate 202.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A calcination waste gas treatment device for preparing manganese pyrophosphate, comprising an exhaust pipe (1), an exhaust pipe (2), a feed pipe (3), a filter screen (4), a baffle (5) and a feed screw (13); the exhaust pipe (1) is fixedly connected to the exhaust pipe (2); the exhaust pipe (1) and the exhaust pipe (2) are both fixedly connected to the feed pipe (3), and the inside of the exhaust pipe (1) and the exhaust pipe (2) are divided into two exhaust spaces by the feed pipe (3); a filter screen (4) is fixedly connected to each exhaust space; two receiving grooves (1a) are provided at the bottom of the exhaust pipe (1); each receiving groove (1a) is connected to one exhaust space; a baffle (5) is rotatably connected to the bottom of each receiving groove (1a); the feed pipe (3) is connected to the feed screw (13), and the feed screw (13) is composed of a central column and spiral sheets wound around the outside of the column; and the characteristics are as follows: It also includes an electric push rod (6), a connecting plate (7) and a scraper (8); two grooves are respectively formed on the surface of the exhaust pipe 1 (1) and the exhaust pipe 2 (2); the grooves are located on the contact surfaces of the two; the exhaust pipe 1 (1) and the grooves of the exhaust pipe correspond to each other; after the exhaust pipe 1 (1) and the exhaust pipe are combined, the corresponding grooves form a receiving space; each receiving space is fixedly connected to an electric push rod (6); each electric push rod (6) is fixedly connected to a connecting plate (7), and the connecting plate (7) slides in the receiving space; each connecting plate (7) is connected to a scraper (8), and the scraper (8) extends into the adjacent exhaust space, and the scraper (8) contacts the filter screen 1 (4); It also includes a cylindrical frame (201) and a paddle (202); the cylindrical frame (201) is fixedly connected to the feeding auger in the feeding pipe (3); a plurality of holes (201a) are formed on the cylindrical frame (201); each hole (201a) corresponds to an independent small cavity in the cylindrical frame (201); and a plurality of paddles (202) are fixedly connected to the cylindrical frame (201); Each of the dial plates (202) is provided with a curved surface (202a); Two baffle plates 2 (202b) are fixedly connected to each of the shifting plates (202).

2. The calcination waste gas treatment equipment for preparing manganese pyrophosphate according to claim 1, characterized in that: It also includes a second filter screen (9); each scraper (8) is rotatably connected to a second filter screen (9) via a torsion spring.

3. The calcination waste gas treatment equipment for preparing manganese pyrophosphate according to claim 1, characterized in that: It also includes a baffle plate 1 (10) and a rotating plate (11); each containing groove (1a) is provided with a baffle plate 1 (10); the baffle plate 1 (10) is rotatably connected to the rotating plate (11) via a torsion spring, and the baffle plate 1 (10) and the rotating plate (11) together isolate the containing groove (1a) from the exhaust space.

4. A calcination waste gas treatment device for preparing manganese pyrophosphate according to any one of claims 1 to 2, characterized in that: It also includes a top plate (12); each scraper (8) is fixedly connected to a plurality of top plates (12).

5. The calcination waste gas treatment equipment for preparing manganese pyrophosphate according to claim 1, characterized in that: It also includes a stopper (14); a stopper (14) is fixedly connected to the upper side and the lower side of each connecting plate (7); the two stoppers (14) and the connecting plate (7) form a T-shaped mechanism.

6. The calcination waste gas treatment equipment for preparing manganese pyrophosphate according to claim 4, characterized in that: The bottom of the scraper (8) is provided with an inclined surface (8a).

7. The calcination waste gas treatment equipment for preparing manganese pyrophosphate according to claim 1, characterized in that: It also comprises a motor (101) and a cleaning roller (102); the exhaust pipe (1) is fixedly connected to the motor (101); the rotating part of the motor (101) is fixedly connected to the cleaning roller (102); the cleaning roller (102) passes through all the receiving grooves (1a) from front to back; and bristles are arranged on the surface of the cleaning roller (102) in the area within the receiving groove (1a).

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