Tail gas emission mechanism for calcium carbonate production

Abstract

The utility model provides a tail gas discharge mechanism for calcium carbonate production, which belongs to the technical field of calcium carbonate production and comprises a smoke discharge cylinder, a smoke detector, a shielding door, an operation table, a top cover and a connecting component. A smoke exhaust channel, a lower side air inlet hole of the smoke exhaust cylinder and a maintenance window are arranged in the smoke exhaust cylinder; the smoke detector is fixedly installed in the smoke exhaust channel and has the freedom degree of moving up and down. The shielding door is installed on the outer side face of the smoke exhaust cylinder and used for shielding the overhaul window. The operation table is fixedly mounted on the upper side of the smoke exhaust cylinder; a protective fence is arranged on the operation table; the top cover is positioned above the smoke exhaust cylinder and is used for shielding the smoke exhaust channel; the connecting assembly is installed at the lower end of the top cover and connected with the upper end of the smoke discharging cylinder. The connecting assembly is used for supporting the top cover and driving the top cover to rotate to one side of the smoke discharging cylinder. According to the tail gas discharging mechanism for calcium carbonate production, the smoke discharging cylinder is convenient and rapid to clean, and the cleaning workload is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of calcium carbonate production, and more specifically relates to an exhaust gas emission mechanism for calcium carbonate production. Background Art

[0002] Calcium carbonate is a common inorganic compound widely used in a variety of fields, including construction, medicine, food, and chemicals. To prepare calcium carbonate, limestone is first crushed and screened to obtain raw materials of suitable particle size. The screened limestone is then calcined at high temperature in a lime kiln, where it undergoes a pyrolysis reaction to produce calcium oxide and carbon dioxide. The calcium oxide is then cooled and digested with water. During the digestion process, the calcium oxide absorbs water to form calcium hydroxide. Next, the calcium hydroxide undergoes a carbonization reaction with carbon dioxide to produce calcium carbonate. The calcium carbonate production process also generates a large amount of exhaust gas and flue gas, which are then treated and discharged through waste pipes. However, current purification towers are equipped with a top cover, which makes sediment and other substances on top of the tower difficult to clean. The use of multiple purification towers also increases the workload for cleaning the top of the towers. Utility Model Content

[0003] The purpose of the utility model is to provide an exhaust gas emission mechanism for calcium carbonate production, so as to solve the technical problems in the prior art that the cleaning operation of the purification tower is relatively difficult and the cleaning workload is large.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide an exhaust gas emission mechanism for calcium carbonate production, comprising:

[0005] A smoke exhaust pipe is provided with a smoke exhaust channel inside; the lower end of the smoke exhaust pipe is used to be fixed to the upper end of the purification tower, and the smoke exhaust channel is connected to the purification tower; the lower side of the smoke exhaust pipe is provided with an air inlet and an inspection window connected to the smoke exhaust channel;

[0006] A smoke detector is fixedly installed in the smoke exhaust channel and is fixedly connected to the smoke exhaust pipe; the smoke detector corresponds to the air inlet; and the smoke detector has the freedom to move up and down;

[0007] a shielding door installed on the outer side of the smoke exhaust pipe and used to shield the inspection window; one end of the shielding door is movably connected to the smoke exhaust pipe, and the other end is detachably connected to the smoke exhaust pipe;

[0008] An operating table is fixedly mounted on the upper side of the smoke exhaust pipe; a guardrail is provided on the operating table;

[0009] A top cover, located above the smoke exhaust pipe, for shielding the smoke exhaust passage;

[0010] A connecting assembly is installed at the lower end of the top cover and connected to the upper end of the smoke exhaust pipe; the connecting assembly is used to support the top cover and to drive the top cover to rotate to one side of the smoke exhaust pipe.

[0011] In one possible implementation, a mounting block is fixedly provided on the inner wall of one side of the smoke exhaust channel close to the air inlet, and a mounting hole is provided on the mounting block; a connecting rod and a locking piece installed on the connecting rod are provided at the lower end of the smoke gas detector; the connecting rod is slidably connected to the mounting hole, and the locking piece is used to lock the connecting rod on the mounting block.

[0012] In a possible implementation, a threaded section is provided on the inner wall of the mounting hole, the connecting rod is a screw rod, and the locking member is a nut threadedly connected to the screw rod.

[0013] In a possible implementation, an auxiliary pipe is provided on the outer side of the smoke exhaust pipe, and one end of the auxiliary pipe is fixedly connected to the smoke exhaust pipe and coaxially aligned with the air inlet.

[0014] In a possible implementation, there are two air inlet holes, which are symmetrically arranged on the smoke exhaust pipe; there are two auxiliary pipes, which correspond one-to-one to the two air inlet holes.

[0015] In a possible implementation, the tail gas emission mechanism for calcium carbonate production further includes:

[0016] There are multiple reinforcing ribs, which are arranged in a ring shape below the operating table; the reinforcing ribs are arranged at an angle, and the upper ends are fixedly connected to the lower end of the operating table, and the lower ends are fixedly connected to the outer side of the smoke exhaust pipe.

[0017] In a possible implementation, the connection component includes:

[0018] There are two detachable support rods, which are symmetrically arranged below the top cover; the upper and lower ends of the detachable support rods are detachably connected to the top cover and the smoke exhaust pipe respectively;

[0019] There are two rotating support rods, which are symmetrically arranged below the top cover; the two detachable support rods and the two rotating support rods are evenly spaced along the circumference of the smoke exhaust pipe; the upper end of the rotating support rod is fixedly connected to the top cover, and the lower end is rotatably connected to the smoke exhaust pipe.

[0020] In a possible implementation, four through holes are provided on the outer wall of the upper end of the smoke exhaust pipe, and four mounting seats are provided on the lower end surface of the top cover, the four mounting seats correspond one-to-one to the two detachable support rods and the two rotating support rods, and the mounting seats are provided with connecting holes; the upper end of the detachable support rod is provided with a bending section movably connected to the connecting hole, and the lower end is provided with a bending section movably connected to the through hole; the upper end of the rotating support rod passes through the connecting hole and is fixedly connected to the mounting seat, and the lower end is provided with a bending section rotatably connected to the through hole.

[0021] In one possible implementation, the bent section at the lower end of the detachable support rod is provided with a threaded section and a locking nut installed on the threaded section; the bent section at the lower end of the rotating support rod is provided with a threaded section and a locking nut installed on the threaded section.

[0022] In a possible implementation, a pad is provided on the guardrail for supporting the top cover after rotation.

[0023] The beneficial effects of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model are as follows: compared with the prior art, the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, when in use, the lower end of the smoke exhaust pipe is fixedly installed on the top of the purification tower, so that the purification tower is connected to the smoke exhaust channel inside the smoke exhaust pipe; the tops of other purification towers are connected to the smoke exhaust pipe by pipes on the air inlet, and at the same time, a smoke detector is set at the air inlet position to monitor the exhaust gas emitted, so that the exhaust gas emitted by multiple purification towers is collected on the smoke exhaust pipe, and only one smoke exhaust pipe needs to be cleaned, which reduces the cleaning workload; when cleaning the smoke exhaust pipe, the staff enters the operating table with a guardrail by climbing a ladder, and manipulates the connecting component to rotate the top cover to one side to avoid the top of the smoke exhaust pipe, so that the staff can perform the cleaning operation conveniently and quickly; in this way, the cleaning operation of the smoke exhaust pipe is convenient and quick, and the cleaning workload is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 A front view of an exhaust gas emission mechanism for calcium carbonate production provided by an embodiment of the present utility model;

[0026] Figure 2A schematic diagram of the connection between the smoke detector and the smoke exhaust pipe provided in an embodiment of the utility model;

[0027] Figure 3 A side view of an exhaust gas emission mechanism for calcium carbonate production provided by an embodiment of the present utility model;

[0028] Figure 4 A schematic diagram of the use status of the tail gas emission mechanism for calcium carbonate production provided by an embodiment of the utility model;

[0029] Figure 5 A schematic structural diagram of a smoke exhaust pipe is provided for an embodiment of the present utility model;

[0030] Figure 6 A schematic diagram of the connection between the top cover, the connecting assembly and the smoke exhaust pipe provided in an embodiment of the present utility model;

[0031] Figure 7 A schematic diagram of the structure of the top cover provided in an embodiment of the utility model;

[0032] Figure 8 A schematic structural diagram of a detachable support rod provided in an embodiment of the utility model.

[0033] Among them, the reference numerals in the figures are:

[0034] 1. Smoke exhaust chimney; 11. Smoke exhaust channel; 12. Air inlet; 13. Inspection window; 14. Mounting block; 15. Mounting hole; 16. Connecting rod; 17. Locking piece; 18. Auxiliary pipe; 19. Through hole; 2. Smoke detector; 3. Shield door; 4. Operating table; 41. Guardrail; 42. Pad; 5. Top cover; 51. Mounting seat; 52. Connecting hole; 6. Connecting assembly; 61. Removable support rod; 62. Rotating support rod; 63. Bending section; 64. Locking nut; 7. Reinforcing rib. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0036] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0039] See also Figures 1 to 7 The tail gas emission mechanism for calcium carbonate production provided by the present invention is now described. A tail gas emission mechanism for calcium carbonate production includes a smoke exhaust pipe 1, a smoke detector 2, a shielding door 3, an operating table 4, a top cover 5 and a connecting assembly 6; a smoke exhaust passage 11 is provided inside the smoke exhaust pipe 1; the lower end of the smoke exhaust pipe 1 is used to be fixed on the upper end of the purification tower, and the smoke exhaust passage 11 is connected to the purification tower; an air inlet 12 and an inspection window 13 connected to the smoke exhaust passage 11 are provided on the lower side of the smoke exhaust pipe 1; the smoke detector 2 is fixedly installed in the smoke exhaust passage 11 and is fixedly connected to the smoke exhaust pipe 1; the smoke detector 2 corresponds to the air inlet 12; the smoke detector 2 It has the freedom to move up and down; the shielding door 3 is installed on the outer side of the smoke exhaust pipe 1 and is used to shield the inspection window 13; one end of the shielding door 3 is movably connected to the smoke exhaust pipe 1, and the other end is detachably connected to the smoke exhaust pipe 1; the operating table 4 is fixedly installed on the upper side of the smoke exhaust pipe 1; a guardrail 41 is provided on the operating table 4; the top cover 5 is located above the smoke exhaust pipe 1 and is used to block the smoke exhaust channel 11; the connecting assembly 6 is installed at the lower end of the top cover 5 and is connected to the upper end of the smoke exhaust pipe 1; the connecting assembly 6 is used to support the top cover 5 and to drive the top cover 5 to rotate to one side of the smoke exhaust pipe 1.

[0040] Compared with the prior art, the exhaust gas emission mechanism for calcium carbonate production provided by the present invention is that, when in use, the lower end of the smoke exhaust pipe 1 is fixedly installed on the top of the purification tower, so that the purification tower is connected to the smoke exhaust channel 11 inside the smoke exhaust pipe 1; the tops of other purification towers are connected to the air inlet 12 through pipelines and connected to the smoke exhaust pipe 1, and a smoke detector 2 is set at the position of the air inlet 12 to monitor the exhaust gas emitted, so that the exhaust gas emitted by multiple purification towers is collected on the smoke exhaust pipe 1, and only one smoke exhaust pipe 1 needs to be cleaned, which reduces the cleaning workload; when cleaning the smoke exhaust pipe 1, the staff enters the operating table 4 with the guardrail 41 through the ladder, and operates the connecting component 6 to rotate the top cover 5 to one side to avoid the top of the smoke exhaust pipe 1, so that the staff can perform the cleaning operation conveniently and quickly; in this way, the cleaning operation of the smoke exhaust pipe 1 is convenient and quick, and the cleaning workload is reduced.

[0041] The exhaust gas treated by the purification tower meets the national exhaust emission standards and will not cause damage to the environment.

[0042] See also Figures 1 to 5 As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the present invention, a mounting block 14 is fixedly provided on the inner wall of the smoke exhaust channel 11 near the air inlet 12, and a mounting hole 15 is opened on the mounting block; the lower end of the smoke detector 2 is provided with a connecting rod 16 and a locking piece 17 installed on the connecting rod 16; the connecting rod 16 is slidably connected to the mounting hole 15, and the locking piece 17 is used to lock the connecting rod 16 on the mounting block 14; the mounting block 14 is fixedly installed on the inner wall of the smoke exhaust pipe 1, and the mounting hole 15 is opened at the upper end of the mounting block 14, and the mounting holes 15 are arranged vertically; the connecting rod 16 is fixedly installed at the lower end of the smoke detector 2, and the connecting rod 16 is installed in the mounting hole 15; when in use, the installation height of the smoke detector 2 is adjusted by means of the installation position of the connecting rod 16 in the mounting hole 15, and then the connecting rod 16 is fixedly installed on the mounting block 14 using the locking piece 17.

[0043] Specifically, a threaded section is provided on the inner wall of the mounting hole 15 , the connecting rod 16 is a screw rod, and the locking member 17 is a nut threadedly connected to the screw rod; the connecting rod 16 is threadedly connected to the mounting hole 15 and fixed with a nut.

[0044] See also Figure 1 and Figure 3As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, an auxiliary pipe 18 is provided on the outer surface of the smoke exhaust pipe 1, one end of the auxiliary pipe 18 is fixedly connected to the smoke exhaust pipe 1 and is coaxially aligned with the air inlet 12; the auxiliary pipe 18 is perpendicular to one side of the smoke exhaust pipe 1, one end of the auxiliary pipe 18 is fixedly connected to the smoke exhaust pipe 1, and the auxiliary pipe 18 is communicated with the air inlet 12; with the help of the auxiliary pipe 18, the smoke exhaust pipe 1 is connected to other purification towers.

[0045] See also Figure 1 and Figure 3 As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, there are two air inlet holes 12, which are symmetrically arranged on the smoke exhaust pipe 1; there are two auxiliary pipes 18, which correspond one to one to the two air inlet holes 12; so that the smoke exhaust pipe 1 can be connected to two purification towers and connected to the two air inlet holes 12 through two auxiliary pipes 18.

[0046] See also Figure 1 、 Figure 3 and Figure 4 As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, the exhaust gas emission mechanism for calcium carbonate production also includes a plurality of reinforcing ribs 7, which are arranged in a ring shape below the operating table 4. The reinforcing ribs 7 are arranged at an angle, with the upper ends fixedly connected to the lower end of the operating table 4 and the lower ends fixedly connected to the outer side of the smoke exhaust pipe 1. The provision of the reinforcing ribs 7 makes the installation of the operating table 4 more stable, ensuring safe and reliable work for personnel. The reinforcing ribs 7 are provided in a plurality and are evenly spaced along the circumference of the smoke exhaust pipe 1.

[0047] See also Figure 1 、 Figure 3 、 Figure 4 、 Figures 6 to 8As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, the connecting assembly 6 includes a detachable support rod 61 and a rotating support rod 62. The number of the detachable support rods 61 is two and they are symmetrically arranged below the top cover 5. The upper and lower ends of the detachable support rods 61 are detachably connected to the top cover 5 and the smoke exhaust pipe 1 respectively; the number of the rotating support rods 62 is two and they are symmetrically arranged below the top cover 5; the two detachable support rods 61 and the two rotating support rods 62 are evenly spaced along the circumference of the smoke exhaust pipe 1. The upper end of the rotating support rod 62 is fixedly connected to the top cover 5, and the lower end is rotatably connected to the smoke exhaust pipe 1. The two detachable support rods 61 and the two rotating support rods 62 are both installed between the top cover 5 and the smoke exhaust pipe 1, and the two detachable support rods 61 are symmetrically arranged on both sides of the smoke exhaust pipe 1 and the top cover 5, and the two rotating support rods 62 are symmetrically arranged on both sides of the smoke exhaust pipe 1 and the top cover 5, that is, the two rotating support rods 62 are respectively located between the two detachable support rods 61, and the angle between the rotating support rod 62 and the detachable support rod 61 is ninety degrees. Among them, the upper end of the rotating support rod 62 is fixedly connected to the top cover 5, and the lower end is rotatably connected to the smoke exhaust pipe 1. The upper end of the rotating support rod 62 is fixedly connected to the top cover 5, and the lower end is rotatably connected to the smoke exhaust pipe 1. When in use, the top cover 5 is located directly above the smoke exhaust pipe 1 and is stably supported by two detachable support rods 61 and two rotating support rods 62; when the top cover 5 needs to be removed, the two detachable support rods 61 are removed first, and then the two rotating support rods 62 are manipulated to rotate toward one side of the smoke exhaust pipe 1, so that the top cover 5 is transferred from the top of the smoke exhaust pipe 1 to the side of the smoke exhaust pipe 1 as the rotating support rods 62 move.

[0048] See also Figure 1 、 Figure 3 、 Figure 4 、 Figures 6 to 8As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the present invention, four through holes 19 are provided on the outer wall of the upper end of the smoke exhaust pipe 1, and four mounting seats 51 are provided on the lower end surface of the top cover 5. The four mounting seats 51 correspond to two detachable support rods 61 and two rotating support rods 62 one by one, and a connecting hole 52 is provided on the mounting seat 51; the upper end of the detachable support rod 61 is provided with a bent section 63 movably connected to the connecting hole 52, and the lower end is provided with a bent section 63 movably connected to the through hole 19; the upper end of the rotating support rod 62 passes through the connecting hole 52 and is fixedly connected to the mounting seat 51, and the lower end is provided with a bent section 63 rotatably connected to the through hole 19; four mounting seats 51 are installed at the lower end of the top cover 5, and the four mounting seats 51 are evenly spaced along the circumference of the top cover 5, and each mounting seat 51 is provided with a connecting hole 5 2. Four through holes 19 corresponding to the four connecting holes 52 are provided at the upper end of the smoke exhaust pipe 1; parallel bending sections 63 are provided at the upper and lower ends of the detachable support rod 61 and the rotating support rod 62, and the bending sections 63 are perpendicular to the detachable support rod 61 and the rotating support rod 62; during installation, when the detachable support rod 61 and the rotating support rod 62 are installed on the top cover 5 and the smoke exhaust pipe 1, the two bent sections 63 on the detachable support rod 61 respectively enter the corresponding through holes 19 and connecting holes 52 at the upper and lower ends, and the bent sections 63 are detachably connected to the top cover 5 and the smoke exhaust pipe 1; and the two bent sections 63 at the upper and lower ends of the rotating support rod 62 are respectively installed in the corresponding through holes 19 and connecting holes 52 at the upper and lower ends, and the upper bent section 63 is fixedly connected to the corresponding mounting seat 51, and the lower bent section 63 is rotatably connected to the through hole 19. In this way, the connection between the detachable support rod 61 and the top cover 5 and the smoke exhaust pipe 1 is more stable and reliable, and easy to remove; and the bent section 63 at the upper end of the rotating support rod 62 is passed through the connecting hole 52 and fixedly connected to the mounting seat 51, so that the rotating support rod 62 can stably drive the top cover 5 to move.

[0049] See also Figure 1 、 Figure 3 、 Figure 4 、 Figures 6 to 8 As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, a threaded section and a locking nut 64 installed on the threaded section are provided on the bent section 63 at the lower end of the detachable support rod 61; a threaded section and a locking nut 64 installed on the threaded section are provided on the bent section 63 at the lower end of the rotating support rod 62; when the detachable support rod 61 is installed on the mounting seat 51 and the smoke exhaust pipe 1, the lower bent section 63 is fixedly connected to the smoke exhaust pipe 1 through the locking nut 64; similarly, the rotating support rod 62 also adopts the locking nut 64 to fix it to the smoke exhaust pipe 1.

[0050] See also Figure 1 、 Figure 3 and Figure 4As a specific embodiment of the exhaust gas emission mechanism for calcium carbonate production provided by the utility model, a pad 42 for supporting the rotated top cover 5 is provided on the guardrail 41. The pad 42 is set to a certain height so that when the top cover 5 is rotated to the side of the smoke exhaust pipe 1, the top cover 5 is supported on the pad 42, thereby controlling the rotation angle of the top cover 5, which is convenient for the subsequent restoration of the position of the top cover 5.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tail gas emission mechanism for calcium carbonate production, characterized in that: include: A smoke exhaust pipe is provided with a smoke exhaust channel inside; the lower end of the smoke exhaust pipe is used to be fixed to the upper end of the purification tower, and the smoke exhaust channel is connected to the purification tower; the lower side of the smoke exhaust pipe is provided with an air inlet and an inspection window connected to the smoke exhaust channel; A smoke detector is fixedly installed in the smoke exhaust channel and is fixedly connected to the smoke exhaust pipe; the smoke detector corresponds to the air inlet; and the smoke detector has the freedom to move up and down; a shielding door installed on the outer side of the smoke exhaust pipe and used to shield the inspection window; one end of the shielding door is movably connected to the smoke exhaust pipe, and the other end is detachably connected to the smoke exhaust pipe; An operating table is fixedly mounted on the upper side of the smoke exhaust pipe; a guardrail is provided on the operating table; A top cover, located above the smoke exhaust pipe, for shielding the smoke exhaust passage; A connecting assembly is installed at the lower end of the top cover and connected to the upper end of the smoke exhaust pipe; the connecting assembly is used to support the top cover and to drive the top cover to rotate to one side of the smoke exhaust pipe.

2. The tail gas emission mechanism for calcium carbonate production according to claim 1, wherein: A mounting block is fixedly provided on the inner wall of the smoke exhaust channel on one side close to the air inlet, and a mounting hole is opened on the mounting block; a connecting rod and a locking piece installed on the connecting rod are provided at the lower end of the smoke detector; the connecting rod is slidably connected to the mounting hole, and the locking piece is used to lock the connecting rod on the mounting block.

3. The tail gas emission mechanism for calcium carbonate production according to claim 2, wherein: A threaded section is provided on the inner wall of the mounting hole, the connecting rod is a screw rod, and the locking piece is a nut threadedly connected to the screw rod.

4. The tail gas emission mechanism for calcium carbonate production according to claim 1, wherein: An auxiliary pipe is provided on the outer side of the smoke exhaust pipe. One end of the auxiliary pipe is fixedly connected to the smoke exhaust pipe and is coaxially aligned with the air inlet.

5. The tail gas emission mechanism for calcium carbonate production according to claim 4, wherein: There are two air inlet holes, which are symmetrically arranged on the smoke exhaust pipe; there are two auxiliary pipes, which correspond one to one to the two air inlet holes.

6. The tail gas emission mechanism for calcium carbonate production according to claim 1, wherein: The tail gas emission mechanism for calcium carbonate production also includes: There are multiple reinforcing ribs, which are arranged in a ring shape below the operating table; the reinforcing ribs are arranged at an angle, and the upper ends are fixedly connected to the lower end of the operating table, and the lower ends are fixedly connected to the outer side of the smoke exhaust pipe.

7. The tail gas emission mechanism for calcium carbonate production according to claim 1, wherein: The connection component includes: There are two detachable support rods, which are symmetrically arranged below the top cover; the upper and lower ends of the detachable support rods are detachably connected to the top cover and the smoke exhaust pipe respectively; There are two rotating support rods, which are symmetrically arranged below the top cover; the two detachable support rods and the two rotating support rods are evenly spaced along the circumference of the smoke exhaust pipe; the upper end of the rotating support rod is fixedly connected to the top cover, and the lower end is rotatably connected to the smoke exhaust pipe.

8. The tail gas emission mechanism for calcium carbonate production according to claim 7, wherein: Four through holes are provided on the outer wall of the upper end of the smoke exhaust pipe, and four mounting seats are provided on the lower end surface of the top cover. The four mounting seats correspond one-to-one to the two detachable support rods and the two rotating support rods, and the mounting seats are provided with connecting holes; the upper end of the detachable support rod is provided with a bending section movably connected to the connecting hole, and the lower end is provided with a bending section movably connected to the through hole; the upper end of the rotating support rod passes through the connecting hole and is fixedly connected to the mounting seat, and the lower end is provided with a bending section rotatably connected to the through hole.

9. The tail gas emission mechanism for calcium carbonate production according to claim 8, wherein: The bent section at the lower end of the detachable support rod is provided with a threaded section and a locking nut installed on the threaded section; the bent section at the lower end of the rotating support rod is provided with a threaded section and a locking nut installed on the threaded section.

10. The tail gas emission mechanism for calcium carbonate production according to claim 8, wherein: The guardrail is provided with a pad for supporting the rotated top cover.

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