A gas-solid separation device for preparing ammonium bicarbonate

Abstract

The present invention discloses a gas-solid separation device for preparing ammonium bicarbonate, which relates to the technical field of ammonium bicarbonate preparation. It comprises: an outer shell, two connecting shells are fixedly connected in the outer shell, an inner shell is fixedly connected in the outer shell, the inner shell is fixedly connected to the connecting shell on one side, and an arc filter is fixedly connected to the position of the inner shell close to the connecting shell on the other side; an electric slide rail is installed in the outer shell, the slider on the electric slide rail is fixedly connected to a gas collecting part, and the gas collecting part is fixedly connected to and connected to two exhaust parts; two first electric rotating shafts are installed on the inner shell, and are connected to filter cloth for common rotation. The present invention collects powder in the exhaust gas through the filter cloth, and uses the heat in the exhaust gas to dry the collected powder. On the one hand, there is no need for subsequent additional drying treatment of the powder, which reduces the steps of exhaust gas treatment. On the other hand, the heat in the exhaust gas is reused, which improves the utilization rate of energy.

Description

Technical Field

[0001] The present invention relates to the technical field of ammonium bicarbonate preparation, and particularly to a gas-solid separation device for ammonium bicarbonate preparation. Background Art

[0002] Ammonium bicarbonate (hereinafter referred to as ammonium bicarbonate) is one of the main additives for producing expanded foods. It can be used as a raw material for leavening agents such as bread, biscuits, and pancakes, and also as a raw material for foaming powdered fruit juices. Currently, in industry, ammonium bicarbonate is usually produced by the carbonization method (i.e., passing carbon dioxide into ammonia water to react to produce ammonium bicarbonate). After the ammonium bicarbonate is produced, it needs to be centrifuged and dried to produce ammonium bicarbonate powder.

[0003] Currently, hot air is usually used to dry ammonium bicarbonate. During the drying process, part of the ammonium bicarbonate powder is discharged together with the air flow, resulting in the loss of ammonium bicarbonate. Currently, a cyclone separator is usually used to separate and collect the ammonium bicarbonate powder in the drying waste gas. Since the ammonium bicarbonate powder in the waste gas is not fully dried, the ammonium bicarbonate powder needs to be subjected to an additional drying step after collection, making the operation steps cumbersome. At the same time, the heat in the drying waste gas cannot be reused, resulting in heat waste. Summary of the Invention

[0004] The present invention provides a gas-solid separation device for ammonium bicarbonate preparation to overcome the disadvantages of cumbersome steps and waste of heat in the waste gas during the treatment of drying waste gas in the prior art.

[0005] The technical solution is as follows: A gas-solid separation device for ammonium bicarbonate preparation, comprising: an outer shell body, two connecting shells are fixedly connected inside the outer shell body, an inner shell body is fixedly connected inside the outer shell body, the inner shell body is fixedly connected to one side of the connecting shell, and an arc-shaped filter screen is fixedly connected to the inner shell body near the other side of the connecting shell; an electric slide rail is installed inside the outer shell body, a slider on the electric slide rail is fixedly connected to a gas collecting member, the gas collecting member is fixedly connected and communicated with two exhaust members, an air extraction element is installed inside the gas collecting member, and both the gas collecting member and the exhaust members slide along the surface of the arc-shaped filter screen; two first electric rotating shafts are installed on the inner shell body and jointly rotatably connect a filter cloth; a collecting cylinder is hermetically rotatably connected inside the outer shell body, both the inner shell body and the arc-shaped filter screen are hermetically matched with the collecting cylinder, a notch is provided on the collecting cylinder, and a stepping motor is installed on the outer shell body, and an output shaft of the stepping motor is fixedly connected to the collecting cylinder.

[0006] Furthermore, the two exhaust members are respectively located on both sides of the gas collecting member, and the extension lines of the opening directions of the two exhaust members both pass through the arc-shaped filter screen and are respectively located on both sides of the central axis of the arc-shaped filter screen.

[0007] Further, it further includes: two second electric rotating shafts, both rotatably connected to the inner shell body and both located inside the filter cloth. A blocking piece is wound around the two second electric rotating shafts, and a rectangular through hole is provided on the blocking piece; an exhaust frame is fixedly connected to the rectangular through hole of the blocking piece, and one side of the exhaust frame close to the arc-shaped filter screen contacts the filter cloth.

[0008] Further, it further includes: a lower connecting piece fixedly connected to the inside of the exhaust frame. An upper connecting piece is fixedly connected to one side of the exhaust frame away from the lower connecting piece. A collision magnetic rod is fixedly connected by the lower connecting piece and the upper connecting piece, and the collision magnetic rod is in collision cooperation with the filter cloth; a mounting frame is fixedly connected to one side of the inner shell body close to the blocking piece, and a plurality of first magnetic rods and a plurality of second magnetic rods are fixedly connected to the mounting frame. The plurality of first magnetic rods and the plurality of second magnetic rods are distributed alternately, and both the first magnetic rod and the second magnetic rod are in magnetic cooperation with the collision magnetic rod.

[0009] Further, the sum of the lengths of the lower connecting piece and the upper connecting piece is greater than the height of the exhaust frame.

[0010] Further, a plurality of V-shaped grooves are provided on one side of the upper connecting piece away from the blocking piece, and a heavy bar is fixedly connected to the upper connecting piece.

[0011] Further, it further includes: a lower shielding piece rotatably connected to the inner shell body in a sealed manner, and the lower shielding piece is in contact and cooperation with the filter cloth; an upper shielding piece is fixedly connected to one side of the inner shell body away from the lower shielding piece, and the upper shielding piece is in contact with the filter cloth. Both the lower shielding piece and the upper shielding piece are located on the side of the filter cloth away from the collection cylinder.

[0012] Further, it further includes: a guiding piece rotatably connected to the inner shell body in a sealed manner near the collection cylinder, the guiding piece is located between the filter cloth and the collection cylinder, and the guiding piece is in contact and cooperation with the filter cloth; a two-way cylinder is slidably connected to the inner shell body in a limited manner, and the two telescopic ends of the two-way cylinder are respectively rotatably connected to the guiding piece and the lower shielding piece.

[0013] Further, it further includes: a guiding piece fixedly connected to one side of the inner shell body close to the guiding piece, the guiding piece is located between the guiding piece and the filter cloth, and the guiding piece is in extrusion cooperation with the guiding piece.

[0014] Further, spherical protrusions are provided at the positions where the guiding piece contacts the guiding piece and where the upper shielding piece contacts the filter cloth, so as to reduce the friction force when the guiding piece slides relative to the guiding piece and the upper shielding piece slides relative to the filter cloth.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: The present invention collects the powder in the waste gas through a filter cloth, and uses the heat in the waste gas to dry the collected powder. On the one hand, there is no need for subsequent additional drying treatment of the powder, reducing the steps of waste gas treatment. On the other hand, the heat in the waste gas is reused, improving the energy utilization rate; The flow area of the waste gas is blocked by a blocking piece, increasing the speed of the waste gas passing through the filter cloth, and then backwashing and removing the powder adhered to the surface of the filter cloth; The filter cloth is tapped by the movement of the impact magnet rod to promote the shedding of the dust adhered to the filter cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 is a three-dimensional structural diagram of the connection shell, inner shell and arc-shaped filter screen of the present invention;

[0018] Figure 3 is a three-dimensional structural diagram of the electric slide rail, air collecting part and exhaust part of the present invention;

[0019] Figure 4 is a three-dimensional structural diagram of the arc-shaped filter screen, exhaust part and air extraction element of the present invention;

[0020] Figure 5 is a three-dimensional structural diagram of the air collecting part, exhaust part and air extraction element of the present invention;

[0021] Figure 6 is a three-dimensional structural diagram of the filter cloth, exhaust frame and lower connecting part of the present invention;

[0022] Figure 7 is a three-dimensional structural diagram of the blocking piece, exhaust frame and mounting bracket of the present invention;

[0023] Figure 8 is an enlarged view of part A in the present invention Figure 6 in the attached drawing;

[0024] Figure 9 is a three-dimensional structural cross-sectional view of the lower shielding part, guiding part and guiding piece of the present invention;

[0025] Figure 10 is an enlarged view of part B in the attached drawing of the present invention Figure 4 in the attached drawing.

[0026] Marks in the attached drawings: 1 - outer housing, 2 - connecting shell, 3 - inner housing, 4 - arc-shaped filter screen, 5 - electric slide rail, 6 - air collecting part, 7 - exhaust part, 8 - air extraction element, 9 - first electric rotating shaft, 10 - filter cloth, 11 - collecting cylinder, 111 - notch, 12 - stepping motor, 13 - second electric rotating shaft, 14 - blocking piece, 15 - exhaust frame, 16 - lower connecting piece, 17 - upper connecting piece, 171 - V-shaped groove, 18 - impact magnetic rod, 19 - mounting bracket, 20 - first magnetic rod, 21 - second magnetic rod, 22 - heavy strip, 23 - lower shielding piece, 24 - upper shielding piece, 25 - guiding piece, 26 - double-acting cylinder, 27 - guiding piece. Detailed implementation manners

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the attached drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] An air-solid separation device for ammonium bicarbonate preparation, see Figures 1-5 , including: an outer housing 1, two connecting shells 2 are fixedly connected inside the outer housing 1, an inner housing 3 is fixedly connected inside the outer housing 1, the inner housing 3 is fixedly connected to one side of the connecting shell 2, and an arc-shaped filter screen 4 is fixedly connected at a position of the inner housing 3 close to the other connecting shell 2; an electric slide rail 5 is installed inside the outer housing 1, a slider on the electric slide rail 5 is fixedly connected with an air collecting part 6, the air collecting part 6 is fixedly connected and communicated with two exhaust parts 7, an air extraction element 8 is installed inside the air collecting part 6, and both the air collecting part 6 and the exhaust parts 7 slide along the surface of the arc-shaped filter screen 4; two first electric rotating shafts 9 are installed on the inner housing 3 and jointly rotatably connect a filter cloth 10; a collecting cylinder 11 is hermetically and rotatably connected inside the outer housing 1, both the inner housing 3 and the arc-shaped filter screen 4 are hermetically matched with the collecting cylinder 11, a notch 111 is arranged on the collecting cylinder 11, and a stepping motor 12 is installed on the outer housing 1, and an output shaft of the stepping motor 12 is fixedly connected with the collecting cylinder 11; the two exhaust parts 7 are respectively located on both sides of the air collecting part 6, and the extension lines of the opening directions of the two exhaust parts 7 both pass through the arc-shaped filter screen 4 and are respectively located on both sides of the central axis of the arc-shaped filter screen 4.

[0029] In the above solution, it aims to solve the problems that when processing the dry waste gas generated in the ammonium carbonate production process, the steps of collecting ammonium carbonate powder and drying it additionally are cumbersome, and at the same time, the heat in the dry waste gas is wasted; in this solution, the powder in the waste gas is collected through the filter cloth 10, and the heat in the waste gas is used to dry the collected powder. On the one hand, there is no need for subsequent additional drying treatment of the powder, reducing the steps of waste gas treatment. On the other hand, the heat in the waste gas is reused again, improving the energy utilization rate.

[0030] The center of the circle corresponding to the electric slide rail 5 is located on the central axis of the arc-shaped filter screen 4, which is used to keep the air collecting member 6 and the exhaust member 7 in contact with the arc-shaped filter screen 4 all the time; the positions where the air collecting member 6 and the exhaust member 7 contact the arc-shaped filter screen 4 can be provided with arc surfaces to reduce the friction between the air collecting member 6 and the exhaust member 7 and the arc-shaped filter screen 4; the inner shell 3, the inner side of the arc-shaped filter screen 4 and the filter cloth 10 form a drying chamber; flexible magnetic strips can be arranged on the edges on both the front and back sides of the filter cloth 10 to adsorb the edges of the filter cloth 10 to the inner shell 3 to prevent waste gas from passing through the gap between the filter cloth 10 and the inner shell 3, resulting in the filter cloth 10 being unable to play a filtering role; a layer of water-absorbing material can be arranged on the inner side of the filter cloth 10 to reduce the moisture contained in the waste gas, which is convenient for drying the powder by using the heat in the waste gas subsequently.

[0031] See Figure 3 、 Figure 4 and Figure 6 It further includes: two second electric rotating shafts 13, both rotatably connected inside the inner shell 3 and both located inside the filter cloth 10. A blocking piece 14 is wound around the two second electric rotating shafts 13 together, and a rectangular through hole is arranged on the blocking piece 14; an exhaust frame 15 is fixedly connected to the rectangular through hole of the blocking piece 14, and the side of the exhaust frame 15 close to the arc-shaped filter screen 4 contacts the filter cloth 10.

[0032] In the above solution, it is aimed to block the flow area of the waste gas by the blocking piece 14 to increase the speed of the waste gas passing through the right side of the filter cloth 10, and then backflush and remove the powder adhered to the right side of the filter cloth 10; the blocking piece 14 is made of an airtight flexible material, and the two second electric rotating shafts 13 can be replaced by one electric rotating shaft, a rotating shaft with a torsion spring, saving costs; the edge on the right side of the exhaust frame 15 is set to be arc-shaped to facilitate the exhaust frame 15 to slide along the surface of the filter cloth 10.

[0033] See Figures 6-8 It further includes: a lower connecting piece 16 fixedly connected to the inner side of the exhaust frame 15. An upper connecting piece 17 is fixedly connected to the side of the exhaust frame 15 far from the lower connecting piece 16. An impact magnetic rod 18 is fixedly connected by the lower connecting piece 16 and the upper connecting piece 17 together, and the impact magnetic rod 18 collides with the filter cloth 10; a mounting frame 19 is fixedly connected to the side of the inner shell 3 close to the blocking piece 14. A plurality of first magnetic rods 20 and a plurality of second magnetic rods 21 are fixedly connected to the mounting frame 19, and the plurality of first magnetic rods 20 and the plurality of second magnetic rods 21 are arranged in an alternating manner. The first magnetic rods 20 and the second magnetic rods 21 are both magnetically matched with the impact magnetic rod 18; the sum of the lengths of the lower connecting piece 16 and the upper connecting piece 17 is greater than the height of the exhaust frame 15; a plurality of V-shaped grooves 171 are arranged on the side of the upper connecting piece 17 far from the blocking piece 14, and a heavy bar 22 is fixedly connected to the upper connecting piece 17.

[0034] In the above solution, it is aimed to promote the shedding of the dust adhering to the filter cloth 10 by knocking the filter cloth 10 through the movement of the impact magnet bar 18; both the lower connecting member 16 and the upper connecting member 17 are made of elastic materials. When the impact magnet bar 18 receives a magnetic repulsion force from the first magnet bar 20 to the right, the impact magnet bar 18 drives the lower connecting member 16 and the upper connecting member 17 to deform together until the impact magnet bar 18 crosses the position where the lower connecting member 16 and the upper connecting member 17 are fixedly connected to the exhaust frame 15. Then, under the dual actions of the elastic force of the lower connecting member 16 and the upper connecting member 17 and the magnetic repulsion force, the impact magnet bar 18 quickly moves to the right and impacts the right side of the filter cloth 10, causing the right side of the filter cloth 10 to vibrate and promoting the shedding of the dust adhering to the right side of the filter cloth 10; the first magnet bar 20 repels the impact magnet bar 18, and the second magnet bar 21 attracts the impact magnet bar 18; the heavy bar 22 is made of a material with high density and not affected by magnetic force. Under the action of the gravity of the heavy bar 22, the upper connecting member 17 is always in a bent state, which is convenient for controlling the deformation direction of the upper connecting member 17 when the impact magnet bar 18 moves; the V-shaped groove 171 on the upper connecting member 17 can make the resistance received by the impact magnet bar 18 large when moving to the right, while the resistance received by the impact magnet bar 18 when resetting to the left is small, which is convenient for the impact magnet bar 18 to reset under the action of the magnetic attraction force given by the second magnet bar 21.

[0035] The working principle of the above solution is as follows: When drying ammonium bicarbonate powder, the waste gas generated by drying enters the inner housing 3 through the connecting housing 2 on the left. The waste gas first passes through the left side of the filter cloth 10, and the left side of the filter cloth 10 intercepts the ammonium bicarbonate powder in the waste gas (when the amount of powder adhering to the left side of the filter cloth 10 is large, the first electric rotating shaft 9 is started to exchange the left and right sides of the filter cloth 10). The clean waste gas enters the filter cloth 10 after passing through the left side of the filter cloth 10. At this time, the waste gas is blocked by the blocking piece 14, so that the waste gas can only continue to flow to the right through the gap between the blocking piece 14 and the filter cloth 10 and the exhaust frame 15 (at this time, the second electric rotating shaft 13 is started and rotates reciprocally, driving the exhaust frame 15 to move up and down reciprocally, so that the impact magnet bar 18 intermittently contacts the first magnet bar 20 and the second magnet bar 21, and the magnetic force is used to control the impact magnet bar 18 to knock the right side of the filter cloth 10). When the waste gas passes through the right side of the filter cloth 10, the waste gas blows off the powder adhering to the right side of the filter cloth 10, and the waste gas and the powder enter the drying chamber together.

[0036] After the waste gas enters the drying chamber, the electric slide rail 5 and the air extraction element 8 are started. The electric slide rail 5 drives the air collecting element 6 and the exhaust element 7 to move reciprocally. The air extraction element 8 sucks the waste gas in the drying chamber into the air collecting element 6 (the function of the arc-shaped filter screen 4 is to limit the powder in the drying chamber). The waste gas in the air collecting element 6 is blown out through the two exhaust elements 7. The airflow blown out by the exhaust element 7 enters the drying chamber and makes the airflow in the drying chamber disordered. At the same time, the powder adhered to the inner side of the arc-shaped filter screen 4 is blown off. The airflow in the drying chamber blows up the powder accumulated at the bottom of the arc-shaped filter screen 4, so that the powder is dispersed and flows in the drying chamber. After the waste gas passes through the filter cloth 10, it contacts the powder in the drying chamber and conducts heat transfer with the powder, so that the moisture in the powder follows the waste gas through the arc-shaped filter screen 4 and is discharged. At the same time, the waste gas in the drying chamber continuously passes through the arc-shaped filter screen 4 and is discharged into the outer housing 1, and is discharged through the connecting shell 2 on the right side. After all the ammonium bicarbonate powder is dried and no waste gas is generated, stop the electric slide rail 5 and control the power of the air extraction element 8 to decrease. At the same time, start the stepping motor 12 to make the collecting cylinder 11 rotate until the notch 111 communicates with the drying chamber, then stop the stepping motor 12. At this time, the airflow in the drying chamber drives the powder to flow along the inner wall of the drying chamber. When the powder passes through the notch 111, a part of the powder enters the collecting cylinder 11. Until all the powder in the drying chamber enters the collecting cylinder 11, stop the air extraction element 8, and drive the collecting cylinder 11 to rotate and reset through the stepping motor 12. At this time, the powder collected in the collecting cylinder 11 is discharged through the notch 111.

[0037] See Figure 3 , Figure 4 , Figure 9 and Figure 10 , further comprising: a lower shielding member 23, which is hermetically and rotatably connected to the inner housing 3, and the lower shielding member 23 is in contact and cooperation with the filter cloth 10; an upper shielding member 24, which is fixedly connected to a side of the inner housing 3 away from the lower shielding member 23, the upper shielding member 24 is in contact with the filter cloth 10, and both the lower shielding member 23 and the upper shielding member 24 are located on the side of the filter cloth 10 away from the collecting cylinder 11.

[0038] In the above solution, it aims to improve the sealing performance between the filter cloth 10 and the inner housing 3 to prevent the waste gas from flowing through the gap between the inner housing 3 and the filter cloth 10; the upper shielding member 24 is made of an elastic material, and under the action of its own elastic force, its end always remains in contact with the filter cloth 10; there is a gap between the lower side of the filter cloth 10 and the inner housing 3.

[0039] See Figure 9 , further comprising: a guiding member 25, which is hermetically and rotatably connected to a side of the inner housing 3 close to the collecting cylinder 11, the guiding member 25 is located between the filter cloth 10 and the collecting cylinder 11, and the guiding member 25 is in contact and cooperation with the filter cloth 10; a double-acting cylinder 26, which is limited and slidably connected to the inner housing 3, and the two telescopic ends of the double-acting cylinder 26 are respectively rotatably connected to the guiding member 25 and the lower shielding member 23.

[0040] In the above solution, the edge in the drying chamber is smoothed by the guide member 25, facilitating the movement of the powder under the action of the airflow blowing; the vertical cross-section of the upper part of the guide member 25 is arc-shaped, and the upper side of the guide member 25 is attached to the right side of the filter cloth 10. The airflow blown out by the exhaust member 7 contacts the arc-shaped filter screen 4 and flows along the inner side of the arc-shaped filter screen 4, blowing the powder accumulated on the lower side inside the arc-shaped filter screen 4, causing the powder to move and rise along the guide member 25; the double-acting cylinder 26 can control the positions of the lower shielding member 23 and the guide member 25. When the filter cloth 10 rotates, the powder adhered to the left side of the filter cloth 10 may fall off. At this time, after the lower shielding member 23 swings and loses contact with the filter cloth 10, it restricts the powder on the filter cloth 10 from falling to the right side of the lower shielding member 23. At the same time, the two telescopic ends of the double-acting cylinder 26 contract simultaneously and control both the lower shielding member 23 and the guide member 25 to lose contact with the filter cloth 10, so that the swing of the lower shielding member 23 releases the blockage of the gap between the filter cloth 10 and the inner housing 3. At this time, a part of the waste gas flows through the gap between the filter cloth 10 and the inner housing 3 and carries the fallen powder into the drying chamber.

[0041] See Figure 9 , further including: a guide piece 27, fixedly connected to one side of the inner housing 3 close to the guide member 25. The guide piece 27 is located between the guide member 25 and the filter cloth 10, and the guide piece 27 is in extrusion fit with the guide member 25; spherical protrusions are provided at the positions where the guide piece 27 contacts the guide member 25 and where the upper shielding member 24 contacts the filter cloth 10, for reducing the friction force when the guide piece 27 slides relative to the guide member 25 and the upper shielding member 24 slides relative to the filter cloth 10.

[0042] In the above solution, it aims to guide the powder between the filter cloth 10 and the inner housing 3 into the drying chamber quickly through the guide piece 27; the guide piece 27 is made of an elastic material, and the guide piece 27 is initially in a deformed and energy-storing state, that is, during the swinging process of the guide member 25, the guide piece 27 can always keep in contact with the guide member 25 under its own elastic action; under the flow of the waste gas, the fallen powder on the filter cloth 10 is guided into the drying chamber.

[0043] The working principle of the above solution is as follows: Before the filter cloth 10 rotates, the two telescopic ends of the double-acting cylinder 26 contract simultaneously and control the lower shielding member 23 and the guide member 25 to swing together, so that both the lower shielding member 23 and the guide member 25 lose contact with the filter cloth 10. At this time, the filter cloth 10 is controlled to rotate. During this process, a part of the waste gas on the left side inside the inner housing 3 flows to the right through the gap between the filter cloth 10 and the inner housing 3 and carries the powder that has fallen into the inner housing 3 and flows along the guide piece 27 into the drying chamber. Until the filter cloth 10 stops rotating, the double-acting cylinder 26 works again and makes the lower shielding member 23 and the guide member 25 contact the filter cloth 10 again.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and variations can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included within the protection scope of the present invention.

Claims

1. A gas-solid separation device for preparing ammonium bicarbonate, characterized in that: include: An outer shell (1), wherein two connecting shells (2) are fixedly connected inside the outer shell (1), an inner shell (3) is fixedly connected inside the outer shell (1), the inner shell (3) is fixedly connected to the connecting shell (2) on one side, and an arc-shaped filter screen (4) is fixedly connected to a position of the inner shell (3) close to the connecting shell (2) on the other side; An electric slide rail (5) is installed in the outer shell (1); a slider on the electric slide rail (5) is fixedly connected to an air collecting member (6); the air collecting member (6) is fixedly connected to and communicates with two exhaust members (7); an air extraction element (8) is installed in the air collecting member (6); the air collecting member (6) and the exhaust member (7) both slide along the surface of the arc-shaped filter screen (4); Two first electric rotating shafts (9) are mounted on the inner housing (3) and are connected to the filter cloth (10) for common rotation; A collecting cylinder (11) is sealingly rotatably connected to the outer shell (1); the inner shell (3) and the arc-shaped filter screen (4) are both sealingly matched with the collecting cylinder (11); a notch (111) is provided on the collecting cylinder (11); a stepping motor (12) is installed on the outer shell (1); an output shaft of the stepping motor (12) is fixedly connected to the collecting cylinder (11); Also includes: Two second electric rotating shafts (13) are both rotatably connected to the inner housing (3) and are both located on the inner side of the filter cloth (10); a blocking sheet (14) is wound around the two second electric rotating shafts (13); and a rectangular through hole is provided on the blocking sheet (14); An exhaust frame (15) is fixedly connected to the rectangular through hole of the blocking piece (14), and a side of the exhaust frame (15) close to the arc-shaped filter screen (4) is in contact with the filter cloth (10); A lower connecting piece (16) is fixedly connected to the inner side of the exhaust frame (15); an upper connecting piece (17) is fixedly connected to a side of the exhaust frame (15) away from the lower connecting piece (16); the lower connecting piece (16) and the upper connecting piece (17) are jointly fixedly connected to an impact magnetic rod (18); the impact magnetic rod (18) collides with the filter cloth (10); A mounting frame (19) is fixedly connected to a side of the inner shell (3) close to the blocking piece (14); a plurality of first magnetic bars (20) and a plurality of second magnetic bars (21) are fixedly connected to the mounting frame (19); the plurality of first magnetic bars (20) and the plurality of second magnetic bars (21) are arranged in a staggered manner; and the first magnetic bars (20) and the second magnetic bars (21) are both magnetically matched with the impact magnetic bar (18).

2. A gas-solid separation device for preparing ammonium bicarbonate according to claim 1, characterized in that: The two exhaust members (7) are respectively located on both sides of the gas collecting member (6); the extension lines of the opening directions of the two exhaust members (7) pass through the arc-shaped filter screen (4) and are respectively located on both sides of the central axis of the arc-shaped filter screen (4).

3. A gas-solid separation device for preparing ammonium bicarbonate according to claim 2, characterized in that: The sum of the length of the lower connecting member (16) and the length of the upper connecting member (17) is greater than the height of the exhaust frame (15).

4. A gas-solid separation device for preparing ammonium bicarbonate according to claim 2, characterized in that: A plurality of V-shaped grooves (171) are provided on a side of the upper connecting piece (17) away from the blocking piece (14), and a weight bar (22) is fixedly connected to the upper connecting piece (17).

5. A gas-solid separation device for preparing ammonium bicarbonate according to claim 2, characterized in that: Also includes: A lower shielding member (23) is sealingly and rotatably connected to the inner shell (3), and the lower shielding member (23) is in contact and fit with the filter cloth (10); An upper shielding member (24) is fixedly connected to a side of the inner shell (3) away from the lower shielding member (23), the upper shielding member (24) is in contact with the filter cloth (10), and the lower shielding member (23) and the upper shielding member (24) are both located on a side of the filter cloth (10) away from the collecting cylinder (11).

6. A gas-solid separation device for preparing ammonium bicarbonate according to claim 5, characterized in that: Also includes: a guide member (25) sealingly rotatably connected to a side of the inner shell (3) close to the collecting cylinder (11); the guide member (25) is located between the filter cloth (10) and the collecting cylinder (11); the guide member (25) is in contact with the filter cloth (10); A bidirectional cylinder (26) is connected to the inner shell (3) in a limited sliding manner, and two telescopic ends of the bidirectional cylinder (26) are rotatably connected to the guide member (25) and the lower shielding member (23) respectively.

7. A gas-solid separation device for preparing ammonium bicarbonate according to claim 6, characterized in that: Also includes: A guide sheet (27) is fixedly connected to a side of the inner shell (3) close to the guide member (25); the guide sheet (27) is located between the guide member (25) and the filter cloth (10); the guide sheet (27) and the guide member (25) are pressed and fitted.

8. A gas-solid separation device for preparing ammonium bicarbonate according to claim 7, characterized in that: A spherical protrusion is provided at a position where the guide piece (27) contacts the guide member (25) and a position where the upper shielding member (24) contacts the filter cloth (10) for reducing friction when the guide piece (27) and the guide member (25) and the upper shielding member (24) and the filter cloth (10) slide relative to each other.

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