Baijiu raw material fermentation carbon dioxide light wine recovery device

Abstract

The present application relates to the technical field of liquor production, and discloses a white liquor raw material fermentation carbon dioxide light wine recovery device, which comprises a reaction tank, an air inlet pipe connected to the reaction tank, an air outlet opening arranged on the reaction tank, a fan installed on the outer surface of the reaction tank, an air inlet pipe connected to the air inlet end of the fan, an air outlet pipe connected to the air outlet end of the fan, the air inlet pipe being in communication with the air outlet opening, a spraying assembly arranged on the reaction tank, a pushing assembly arranged on the rotating shaft, a shielding assembly arranged in the reaction tank, the pushing assembly and the shielding assembly being used for intermittent air supply, and an exhaust assembly arranged in the reaction tank. Through the cooperation of the pushing assembly and the shielding assembly, the sliding plate intermittently blocks the air inlet pipe, intermittent air inlet is realized, and the intermittent air inlet mode can make the carbon dioxide entering the reaction tank at a time have sufficient time to fully mix and react with the water flow, so that the water flow and the gas are fully mixed, and the light wine recovery effect is improved.

Description

Technical Field

[0001] This invention relates to the field of baijiu (Chinese liquor) production technology, and in particular to a device for recovering carbon dioxide and light liquor during the fermentation of baijiu raw materials. Background Technology

[0002] The carbon dioxide distillate recovery device for baijiu raw material fermentation is a system used to recover distilled spirits carried in the carbon dioxide gas produced during alcoholic fermentation. The core purpose of this device is to separate and recover distilled spirits from the carbon dioxide produced during fermentation through physical or chemical methods, thereby reducing alcohol loss and improving the utilization rate of raw materials.

[0003] In the production of baijiu (Chinese liquor), when recovering gaseous ethanol from carbon dioxide using water spraying, the existing technology employs a counter-current contact structure where carbon dioxide flows upward and water is sprayed downward. While this achieves gas-liquid mixing, it suffers from a significant drawback: short contact time between the gas and water. Due to the low density and high velocity of carbon dioxide, its upward movement within the spray tower easily creates localized airflow channels, causing some gas to escape directly without sufficient contact with the downward-spraying water. Simultaneously, the water, under the influence of gravity, is in free fall, and its surface tension and relative velocity with the gas limit the frequency of gas-liquid interface renewal, making it difficult to fully complete the mass transfer process of ethanol molecules from the gas phase to the liquid phase. This insufficient contact time directly leads to low ethanol absorption efficiency, resulting in a large amount of gaseous ethanol being emitted with the carbon dioxide tail gas, reducing raw material utilization and increasing production costs.

[0004] Therefore, it is necessary to design a device for recovering carbon dioxide and distilled spirits from the fermentation of baijiu raw materials to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a device for recovering carbon dioxide and distilled spirits from the fermentation of baijiu raw materials.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A device for recovering carbon dioxide and diluted liquor from the fermentation of baijiu raw materials includes a reaction tank, an air inlet pipe connected to the reaction tank, an exhaust port on the reaction tank, a fan installed on the outer surface of the reaction tank, an air inlet pipe connected to the air inlet end of the fan, an air outlet pipe connected to the air outlet end of the fan, the air inlet pipe communicating with the exhaust port, a spray assembly installed on the reaction tank, a pushing assembly installed on the rotating shaft, a shielding assembly installed inside the reaction tank, the pushing assembly and the shielding assembly being used for intermittent gas supply, and an exhaust assembly installed inside the reaction tank.

[0007] As a preferred embodiment of the present invention, the spray assembly includes a rotating shaft and a motor. The rotating shaft is rotatably mounted on the reaction tank and is hollow inside. The top end of the rotating shaft is located outside the reaction tank, and the bottom end of the rotating shaft is located inside the reaction tank. A rotary joint is installed at the top end of the rotating shaft. The motor is installed at the top end of the reaction tank. The output shaft of the motor is connected to the rotating shaft through a transmission component. A spray pipe is fixed at the bottom end of the rotating shaft, and the rotating shaft and the spray pipe are connected. Several spray heads are installed on the spray pipe.

[0008] In a preferred embodiment of the present invention, the pushing assembly includes a mounting plate and a sleeve. The mounting plate is fixedly sleeved on the rotating shaft, and the mounting plate and the rotating shaft are coaxially arranged. The mounting plate has an opening, and the outer peripheral surface of the mounting plate has a sliding opening that communicates with the opening. The sleeve is rotatably sleeved on the rotating shaft, and a sliding plate is slidably arranged in the opening. The sleeve and the sliding plate are connected by a support rod, and the sleeve and the mounting plate are connected by a coil spring. A pushing structure is provided at the end of the sliding plate away from the rotating shaft, and a fixing rod is fixed to the outer peripheral surface of the mounting plate.

[0009] As a preferred embodiment of the present invention, the pushing structure includes a connecting plate, which is fixed to the end of the slide plate away from the rotating shaft. The connecting plate is slidably disposed in the slide opening. An installation opening is provided at the end of the connecting plate away from the slide plate. A slide rod is slidably disposed in the installation opening. An end cap is fixed to the bottom end of the slide rod, and the end cap is connected to the connecting plate by a spring. A connecting rod is fixed to the side of the mounting plate. A magnetic block is fixed to the end of the connecting rod away from the mounting plate. The end cap is made of magnetic material.

[0010] As a preferred embodiment of the present invention, in the initial state, under the elastic force of the spring, the top end of the slide rod is located above the connecting plate.

[0011] As a preferred embodiment of the present invention, the shielding assembly includes two guide rods, each of which is fixed inside the reaction vessel by two stop rods. The two guide rods are located on the upper and lower sides of the air inlet pipe, respectively. A sliding plate is provided between the two guide rods, and two guide blocks are fixed on the sliding plate. The two guide blocks are slidably sleeved on the two guide rods, respectively. The sliding plate is connected to the reaction vessel by a tension spring, and a crossbar is fixed on the side of the sliding plate.

[0012] As a preferred embodiment of the present invention, the guide rod has an arc-shaped structure, and the arc of the guide rod is adapted to the arc of the reaction vessel body. The sliding plate has an arc-shaped structure, and the side of the sliding plate is in contact with the inner wall of the reaction vessel.

[0013] As a preferred embodiment of the present invention, the outer peripheral surface of the slide rod is fitted with the inner surface of the mounting opening.

[0014] As a preferred embodiment of the present invention, the exhaust assembly includes a gas guide hood, which is fixed inside the reaction vessel and positioned directly opposite the exhaust port. The exhaust hood has several gas outlets arranged in a linear array. Several slidable lifting plates are provided on the side of the exhaust hood, and the lifting plates are connected to each other by vertical rods. A slide rail is fixed on the side of the exhaust hood, and a sliding seat is slidably mounted on the slide rail. The sliding seat is connected to one of the lifting plates. Assembly rods are fixed at both ends of one of the lifting plates, and arc-shaped plates are fixed at the ends of the two assembly rods away from the lifting plates. Both arc-shaped plates have an arc-shaped structure.

[0015] As a preferred embodiment of the present invention, one of the arc-shaped plates arches upward and the other arc-shaped plate arches downward.

[0016] The present invention has the following beneficial effects: By cooperating with the pushing component and the blocking component, the sliding plate intermittently blocks the air inlet pipe, achieving intermittent air intake. When the sliding plate blocks the air inlet pipe, carbon dioxide gas cannot enter the reaction tank temporarily. After the sliding plate resets, air intake resumes. This intermittent air intake method allows the carbon dioxide entering the reaction tank each time to have enough time to fully mix and react with the water flow, ensuring that the water flow and gas are fully mixed and improving the distillate recovery effect. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a carbon dioxide and light liquor recovery device for the fermentation of baijiu raw materials proposed in this invention; Figure 2 This is a cross-sectional structural schematic diagram of a carbon dioxide and light liquor recovery device for fermentation of baijiu raw materials proposed in this invention. Figure 3 This is a schematic diagram of the internal structure of the reaction vessel; Figure 4 Schematic diagram of the structure of the driving component and the blocking component Figure 1 ; Figure 5 for Figure 4 Enlarged view of the structure at point A; Figure 6 Schematic diagram of the structure of the driving component and the blocking component Figure 2 ; Figure 7 Schematic diagram of the structure of the driving component and the blocking component Figure 3 ; Figure 8 for Figure 7 Enlarged view of the structure at point B; Figure 9 This is a schematic diagram of the structure of the fan and exhaust assembly; Figure 10 Schematic diagram of the exhaust assembly Figure 1 ; Figure 11 Schematic diagram of the exhaust assembly Figure 2 .

[0018] In the diagram: 1. Reaction vessel; 11. Inlet pipe; 12. Exhaust port; 2. Fan; 21. Inlet pipe; 22. Outlet pipe; 31. Shaft; 311. Rotary joint; 32. Motor; 33. Transmission component; 34. Spray pipe; 35. Spray head; 41. Mounting plate; 411. Fixing rod; 412. Connecting rod; 413. Magnetic block; 42. Opening; 43. Sliding port; 44. Sleeve; 45. Slide plate; 451 452. Connecting plate; 453. Mounting port; 454. Slide rod; 455. End cap; 456. Spring; 47. Support rod; 48. Coil spring; 51. Guide rod; 511. Stop rod; 52. Sliding plate; 521. Crossbar; 53. Guide block; 54. Tension spring; 61. Air guide cover; 611. Air outlet; 62. Lifting plate; 63. Vertical rod; 64. Slide rail; 65. Slide seat; 66. Assembly rod; 67. Arc plate. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Example 1: This example describes a device for recovering carbon dioxide and light liquor during the fermentation of baijiu raw materials, as disclosed in this example. Figure 1-8The reaction vessel includes a reaction tank 1, which is connected to an inlet pipe 11. Carbon dioxide gas enters the reaction tank 1 through the inlet pipe 11. An exhaust port 12 is provided on the reaction tank 1 for discharging carbon dioxide gas. A fan 2 is installed on the outer surface of the reaction tank 1. The inlet end of the fan 2 is connected to an inlet pipe 21, and the outlet end of the fan 2 is connected to an outlet pipe 22. The inlet pipe 21 is connected to the exhaust port 12. When the fan 2 is running, it can draw gas from the reaction tank 1 through the inlet pipe 21 and discharge the gas through the outlet pipe 22. A spray assembly is provided on the reaction tank 1. The spray assembly includes a rotating shaft 31 and a motor 32. The rotating shaft 31 is rotatably mounted on the reaction tank 1 and is hollow inside. The top end of the rotating shaft 31 is located outside the reaction tank 1, and the bottom end is located inside the reaction tank 1. A rotary joint 311 is installed at the top of the reactor 1. One end of the rotary joint 311 is connected to the inside of the rotating shaft 31, and the other end of the rotary joint 311 is connected to a water source. The purpose of the rotary joint 311 is to avoid the entanglement of pipelines. The motor 32 is installed at the top of the reactor 1. The output shaft of the motor 32 is connected to the rotating shaft 31 through a transmission component 33. A spray pipe 34 is fixed at the bottom of the rotating shaft 31, and the rotating shaft 31 is connected to the spray pipe 34. Several spray heads 35 are installed on the spray pipe 34. During operation, water flows into the inside of the rotating shaft 31 through the rotary joint 311, then into the spray pipe 34, and finally sprayed out through several spray heads 35. Carbon dioxide gas enters the inside of the reactor 1 through the air inlet pipe 11. Finally, the carbon dioxide gas and water flow mix in the reactor 1.

[0021] A pushing assembly is provided on the rotating shaft 31. The pushing assembly includes a mounting plate 41 and a sleeve 44. The mounting plate 41 is fixedly sleeved on the rotating shaft 31 and is coaxially arranged with the rotating shaft 31. An opening 42 is provided on the mounting plate 41, and a sliding groove 43 is provided on the outer circumference of the mounting plate 41, which is connected to the opening 42. The sleeve 44 is rotatably sleeved on the rotating shaft 31. A sliding plate 45 is slidably arranged in the opening 42. The sleeve 44 and the sliding plate 45 are connected by a support rod 46. The sleeve 44 and the mounting plate 41 are connected by a coil spring 47. Under the action of the coil spring 47, in the initial state, the sliding plate 45 is located on one side of the opening 42. A pushing structure is provided at the end of the sliding plate 45 away from the rotating shaft 31. The pushing structure includes a connecting plate 451, which is fixed to the end of the slide plate 45 away from the rotating shaft 31. The connecting plate 451 is slidably disposed in the sliding opening 43. An installation opening 452 is opened at the end of the connecting plate 451 away from the slide plate 45. A slide rod 453 is slidably disposed in the installation opening 452. An end cap 454 is fixed to the bottom end of the slide rod 453, and the end cap 454 is connected to the connecting plate 451 by a spring 455. In the initial state, under the elastic force of the spring 455, the top end of the slide rod 453 is located above the connecting plate 451. A connecting rod 412 is fixed to the side of the mounting plate 41. A magnet 413 is fixed to the end of the connecting rod 412 away from the mounting plate 41. The end cap 454 is made of magnetic material.

[0022] The reaction vessel 1 is equipped with a shielding assembly, which includes two guide rods 51. Each guide rod 51 is fixed inside the reaction vessel 1 by two stop rods 511. The two stop rods 511 on the guide rod 51 are located at both ends of the guide rod 51. The guide rod 51 has an arc-shaped structure, and the arc of the guide rod 51 matches the arc of the reaction vessel 1. The two guide rods 51 are located on the upper and lower sides of the air inlet pipe 11, respectively. A sliding plate 52 is provided between the two guide rods 51. The sliding plate 52 has an arc-shaped structure, and the side of the sliding plate 52 is in contact with the inner wall of the reaction vessel 1. Two guide blocks 53 are fixed on the movable plate 52. The two guide blocks 53 are slidably sleeved on the two guide rods 51 respectively. The sliding plate 52 is connected to the reaction vessel 1 through a tension spring 54. Under the action of the tension spring 54, in the initial state, the sliding plate 52 is located at one end of the two guide rods 51. At this time, the sliding plate 52 is offset from the air inlet pipe 11. When the sliding plate 52 slides to the other end of the two guide rods 51, the sliding plate 52 just blocks the air inlet pipe 11. At this time, the sliding plate 52 plays a role in blocking the air inlet pipe 11. A crossbar 521 is fixed on the side of the sliding plate 52.

[0023] In the use of the light liquor recovery device proposed in this invention, carbon dioxide gas enters the reaction tank 1 through the inlet pipe 11, and water flows into the rotating shaft 31 through the rotary joint 311, then into the spray pipe 34, and finally sprayed out through several spray heads 35. The carbon dioxide gas and water flow mix inside the reaction tank 1. During the process, the operator starts the motor 32. When the motor 32 is running, it drives the rotating shaft 31 to rotate through the transmission component 33. When the rotating shaft 31 rotates, it drives the spray pipe 34 to rotate, so that the water flow evenly covers the reaction tank 1, which is to ensure that the water flow and gas are fully mixed. At the same time, the rotating shaft 31 can drive the mounting plate 41 to rotate. During the rotation of the mounting plate 41, the coil spring 47 can drive the sleeve 44 to rotate, so that the sleeve 44 drives the sliding plate 45 to rotate through the support rod 46. At this stage, the mounting plate 41, the sliding plate 45 and the connecting plate are connected. 451 rotates synchronously. During the rotation, the slide bar 453 on the connecting plate 451 will contact the crossbar 521 and push the crossbar 521 to move. Since the elastic force applied to the sliding plate 52 by the tension spring 54 is less than the elastic force applied to the sleeve 44 by the coil spring 47, the slide bar 453 will push the sliding plate 52 through the crossbar 521, causing the sliding plate 52 to move along the two guide bars 51. When the sliding plate 52 moves to the position directly opposite the air intake pipe 11, the two guide blocks 53 just contact the stop bar 511 at the end of the two guide bars 51. At this time, the sliding plate 52 cannot continue to move. When the sliding plate 52 cannot move, the crossbar 521 blocks the slide bar 453, which makes the slide bar 453 and the connecting plate 451 unable to continue to move, but the mounting plate 41 remains rotating. That is, the slide plate 45 is stationary and the mounting plate 41 rotates, and the two move relative to each other.

[0024] When the sliding plate 52 blocks the air inlet pipe 11, carbon dioxide gas cannot enter the reaction vessel 1 temporarily. Furthermore, as the mounting plate 41 rotates, the connecting rod 412 drives the magnetic block 413 to rotate. When the magnetic block 413 rotates to a position directly opposite the sliding rod 453, the magnetic block 413 attracts the end cap 454 made of magnetic material, causing the end cap 454 to adhere to the magnetic block 413. During this process, the end cap 454 drives the sliding rod 453 to move downwards, forming a... Figure 8 As shown, when the slide bar 453 moves down, it can separate from the crossbar 521. At this time, the crossbar 521 no longer blocks the slide bar 453. Without the restriction of the crossbar 521, the sleeve 44, support rod 46, slide plate 45 and connecting plate 451 will automatically reset under the action of the coil spring 47 and return to the initial position. In addition, when the slide plate 45 separates from the crossbar 521, the sliding plate 52 will also automatically reset under the action of the tension spring 54. Based on the above process, under the combined action of the pushing component and the blocking component, the sliding plate 52 will intermittently block the air intake pipe 11 to achieve the function of intermittent air intake.

[0025] Example 2: Based on Example 1, this example discloses a device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials, such as... Figure 9-11 As shown, a fixing rod 411 is fixed to the outer periphery of the mounting plate 41. An exhaust assembly is provided inside the reaction tank 1. The exhaust assembly includes a gas guide hood 61, which is fixed inside the reaction tank 1 and is positioned directly opposite the exhaust port 12. The exhaust hood has several gas outlets 611 arranged in a linear array. Several slidable lifting plates 62 are provided on the side of the exhaust hood, and the lifting plates 62 are connected to each other by vertical rods 63. A slide rail 64 is fixed to the side of the exhaust hood, and a slide block 65 is slidably mounted on the slide rail 64. The slide block 65 is connected to one of the lifting plates 62. The lifting plates 62 move... During the process, the slide rail 64 and the slide block 65 provide limits for the lifting plates 62 to ensure the stability of the movement of the lifting plates 62. In the initial state, the lifting plates 62 are respectively facing the gas outlets 611. At this time, the lifting plates 62 block the gas outlets 611 respectively, and the gas in the reaction tank 1 cannot be discharged through the gas outlets 611. Both ends of one of the lifting plates 62 are fixed with assembly rods 66, and the ends of the two assembly rods 66 away from the lifting plate 62 are fixed with arc plates 67. Both arc plates 67 are arc-shaped structures, one arc plate 67 arches upward and the other arc plate 67 arches downward.

[0026] During the time interval between the slide bar 453 pushing the sliding plate 52 to the position directly opposite the air inlet pipe 11 and the magnetic block 413 moving to the position directly opposite the end cap 454, the fixing rod 411 will contact the two arc-shaped plates 67 sequentially. First, the fixing rod 411 will push the downward-arched arc-shaped plate 67. Under the pushing action of the fixing rod 411, the downward-arched arc-shaped plate 67 will move upward, causing several lifting plates 62 to move upward. At this time, the several lifting plates 62 will be misaligned with several air outlets 611 respectively. At the same time, the fan 2 starts. Since the several lifting plates 62 are misaligned with several air outlets 611, the fan 2 can extract the gas in the reaction tank 1 through several air outlets 611 during operation, and through... The exhaust pipe 22 discharges the gas. Subsequently, the fixed rod 411 contacts the upward-arched arc plate 67 and pushes the upward-arched arc plate 67. At this time, the upward-arched arc plate 67 will drive several lifting plates 62 to move downward, so that the lifting plates 62 overlap with several air outlets 611 again. At the same time, the fan 2 stops running, and the exhaust action stops. Based on the above process, during the 360° rotation of the mounting plate 41, the device performs the action of "air intake - stop air intake - exhaust - stop exhaust", so that the carbon dioxide supplied once can fully react with the water in the reaction tank 1. The periodic air supply and exhaust can increase the reaction time between carbon dioxide and water, thereby improving the recovery effect of light wine.

[0027] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for recovering carbon dioxide and light liquor during the fermentation of baijiu raw materials, characterized in that, The reaction vessel includes a reaction vessel (1), which is connected to an air inlet pipe (11) and an exhaust port (12). A fan (2) is installed on the outer surface of the reaction vessel (1). The air inlet end of the fan (2) is connected to an air inlet pipe (21), and the air outlet end of the fan (2) is connected to an air outlet pipe (22). The air inlet pipe (21) is connected to the exhaust port (12). A spray assembly is provided on the reaction vessel (1). The spray assembly includes a rotating shaft (31) and a motor (32). A pushing assembly is provided on the rotating shaft (31). A shielding assembly is provided inside the reaction vessel (1). The pushing assembly and the shielding assembly are used for intermittent air supply. An exhaust assembly is provided inside the reaction vessel (1). The pushing component includes a mounting plate (41) and a sleeve (44). The mounting plate (41) is fixedly sleeved on the rotating shaft (31), and the mounting plate (41) and the rotating shaft (31) are coaxially arranged. An opening (42) is provided on the mounting plate (41), and a sliding opening (43) is provided on the outer peripheral surface of the mounting plate (41), and the sliding opening (43) is connected to the opening (42). The sleeve (44) is rotatably sleeved on the rotating shaft (31). A sliding plate (45) is slidably arranged in the opening (42). The sleeve (44) and the sliding plate (45) are connected by a support rod (46). The sleeve (44) and the mounting plate (41) are connected by a coil spring (47). A pushing structure is provided at the end of the sliding plate (45) away from the rotating shaft (31). A fixing rod (411) is fixed on the outer peripheral surface of the mounting plate (41). The pushing structure includes a connecting plate (451), which is fixed to one end of the slide plate (45) away from the rotating shaft (31). The connecting plate (451) is slidably disposed in the slide opening (43). An installation opening (452) is provided at one end of the connecting plate (451) away from the slide plate (45). A slide rod (453) is slidably disposed in the installation opening (452). An end cap (454) is fixed at the bottom end of the slide rod (453), and the end cap (454) is connected to the connecting plate (451) by a spring (455). A connecting rod (412) is fixed to the side of the mounting plate (41). A magnet (413) is fixed at one end of the connecting rod (412) away from the mounting plate (41). The end cap (454) is made of magnetic material.

2. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 1, characterized in that, The rotating shaft (31) is rotatably mounted on the reaction tank (1), and the inside of the rotating shaft (31) is hollow. The top end of the rotating shaft (31) is located outside the reaction tank (1), and the bottom end of the rotating shaft (31) is located inside the reaction tank (1). A rotary joint (311) is installed on the top end of the rotating shaft (31). The motor (32) is installed on the top end of the reaction tank (1). The output shaft of the motor (32) is connected to the rotating shaft (31) through a transmission component (33). A spray pipe (34) is fixed at the bottom end of the rotating shaft (31), and the rotating shaft (31) and the spray pipe (34) are connected. Several spray heads (35) are installed on the spray pipe (34).

3. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 2, characterized in that, In the initial state, under the elastic force of the spring (455), the top of the slide rod (453) is located above the connecting plate (451).

4. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 1, characterized in that, The shielding assembly includes two guide rods (51), each of which is fixed inside the reaction vessel (1) by two baffles (511). The two guide rods (51) are located on the upper and lower sides of the air inlet pipe (11), respectively. A sliding plate (52) is provided between the two guide rods (51). Two guide blocks (53) are fixed on the sliding plate (52). The two guide blocks (53) are slidably sleeved on the two guide rods (51). The sliding plate (52) is connected to the reaction vessel (1) by a tension spring (54). A crossbar (521) is fixed on the side of the sliding plate (52).

5. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 4, characterized in that, The guide rod (51) has an arc-shaped structure, and the arc of the guide rod (51) is adapted to the arc of the reaction vessel (1). The sliding plate (52) has an arc-shaped structure, and the side of the sliding plate (52) is in contact with the inner wall of the reaction vessel (1).

6. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 1, characterized in that, The outer peripheral surface of the slide bar (453) fits against the inner surface of the mounting port (452).

7. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 1, characterized in that, The exhaust assembly includes a gas guide hood (61), which is fixed inside the reaction vessel (1) and is positioned directly opposite the exhaust port (12). The exhaust hood has several gas outlets (611) arranged in a linear array. Several slidable lifting plates (62) are provided on the side of the exhaust hood. The lifting plates (62) are connected to each other by vertical rods (63). A slide rail (64) is fixed on the side of the exhaust hood. A slide seat (65) is slidably arranged on the slide rail (64). The slide seat (65) is connected to one of the lifting plates (62). Both ends of one of the lifting plates (62) are fixed with assembly rods (66). The ends of the two assembly rods (66) away from the lifting plate (62) are fixed with arc-shaped plates (67). Both arc-shaped plates (67) have an arc-shaped structure.

8. The device for recovering carbon dioxide and diluted liquor during the fermentation of baijiu raw materials according to claim 7, characterized in that, One of the arc-shaped plates (67) arches upward, and the other arc-shaped plate (67) arches downward.

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