A dehumidification and drying system for crystallizer

Abstract

The present application relates to the field of crystallizers, and in particular to a dehumidification and drying system for a crystallizer, comprising a condenser and a dehumidification component, wherein the dehumidification component comprises an air inlet duct 1, an air outlet duct 1, a dehumidification barrel and a plurality of molecular sieves, wherein the inner cavity of the dehumidification barrel is used to store the plurality of molecular sieves, the air inlet duct 1 is connected at one end to the air outlet end of the condenser, the air inlet duct 1 is connected at the other end to the air inlet end of the dehumidification barrel, the air outlet duct 1 is connected at one end to the air outlet end of the dehumidification barrel, and the other end of the air outlet duct 1 is connected to the air inlet end of the crystallizer. The arrangement of the air inlet duct 1, the air outlet duct 1, the dehumidification barrel and the molecular sieves in the present application ensures that after the fresh air absorbs moisture in the crystallizer, the dew point of the fresh air is lower than the dew point of the air, thereby achieving direct discharge of the fresh air in the crystallizer without the need to install a return air device, and is applicable to a variety of working conditions, especially in an environment with organic volatiles, reducing the dehumidification and drying steps of the crystallizer, thereby improving the dehumidification effect of the fresh air and extending its service life.

Description

Technical Field

[0001] The present application relates to the field of crystallizers, and in particular to a dehumidification and drying system for a crystallizer. Background Art

[0002] The crystallizer is an important chemical equipment. It is used to make solutions or molten objects into crystals. When the crystallizer is in use, fresh air needs to be introduced into the crystallizer to regulate the temperature and humidity in the crystallizer.

[0003] In the prior art, fresh air needs to be cooled and dehumidified through a condenser before entering the crystallizer. The cooled and dehumidified fresh air is passed into the crystallizer to absorb moisture, making the dew point of the fresh air discharged from the crystallizer higher than the air dew point. The fresh air discharged from the crystallizer needs to be returned to the air before being discharged, which increases the dehumidification and drying steps of the crystallizer, thereby reducing the dehumidification effect of the fresh air. Summary of the Invention

[0004] In order to improve the dehumidification effect of fresh air, the present application provides a dehumidification and drying system for a crystallizer.

[0005] This application provides a dehumidification and drying system for a crystallizer, which adopts the following technical solutions:

[0006] A dehumidification and drying system for a crystallizer includes a condenser and a dehumidification component. The dehumidification component includes an air inlet duct, an air outlet duct, a dehumidification barrel and multiple molecular sieves. The inner cavity of the dehumidification barrel is used to store multiple molecular sieves. The air inlet end of the condenser is used for fresh air to enter. One end of the air inlet duct is connected to the air outlet end of the condenser, and the other end of the air inlet duct is connected to the air inlet end of the dehumidification barrel. One end of the air outlet duct is connected to the air outlet end of the dehumidification barrel, and the other end of the air outlet duct is connected to the air inlet end of the crystallizer. The condenser can cool and condense the fresh air, and the molecular sieve can filter water molecules in the fresh air.

[0007] By adopting the above technical solution, fresh air enters the inner cavity of the condenser through the air inlet end of the condenser, and the condenser cools down and condenses the fresh air to achieve preliminary dehumidification of the fresh air; the fresh air after preliminary dehumidification enters the air inlet end of the dehumidifier barrel through the air inlet duct from the air outlet end of the condenser, and the fresh air located at the air inlet end of the dehumidifier barrel enters the air outlet end of the dehumidifier barrel after passing through multiple molecular sieves. The molecular sieves filter the water molecules in the fresh air to achieve secondary dehumidification of the fresh air, thereby improving the dehumidification effect of the fresh air, and the fresh air located at the air outlet end of the dehumidifier barrel enters the air inlet end of the crystallizer through the air outlet duct, ensuring that the dew point of the fresh air is lower than the air dew point after the fresh air absorbs moisture in the crystallizer, so that the fresh air in the crystallizer is directly discharged without the need to install a return air device. It is suitable for a variety of working conditions, especially in an environment with organic volatiles, reducing the dehumidification and drying steps of the crystallizer, thereby improving the dehumidification effect of the fresh air and extending its service life.

[0008] Optionally, the dehumidification barrel is connected to a recovery component, which includes a second air inlet duct, a second air outlet duct, an air tank and a pump body. The air inlet end of the pump body is connected to the air outlet end of the air tank through a pipe, the air outlet end of the pump body is connected to the air inlet end of the dehumidification barrel through the second air inlet duct, and the air outlet end of the dehumidification barrel is connected to the air inlet end of the condenser through the second air outlet duct. The pump body drives the dry gas in the gas tank to impact the molecular sieve in the dehumidification barrel, drives the saturated water molecules in the molecular sieve to escape, and the air in the dehumidification barrel is passed into the air inlet end of the condenser through the second air outlet duct.

[0009] By adopting the above technical solution, a gas tank is used to store dry gas, such as nitrogen or hydrogen. The dry gas in the gas tank enters the air inlet end of the pump body through a pipeline. The pump body drives the dry gas through the second air inlet pipe from the air inlet end of the dehumidification barrel into the inner cavity of the dehumidification barrel. The dry gas impacts the molecular sieve and drives the saturated water molecules in the molecular sieve to escape. At the same time, the air in the dehumidification barrel enters the air inlet end of the condenser through the second air outlet pipe. The condenser cools and condenses the air and then discharges it, thereby realizing the reuse of the molecular sieve and reducing the consumption of materials, thereby embodying the concept of energy saving.

[0010] Optionally, the dehumidification barrel includes a fixed part and a dehumidification part, the inner cavity of the dehumidification part is for storing multiple molecular sieves, the dehumidification part is slidably connected to the inner cavity wall of the fixed part, the dehumidification part divides the inner cavity of the fixed part into an air inlet section and an air outlet section, the surface of the dehumidification part facing the air inlet section is provided with multiple sieve holes 1 at intervals, the sieve holes 1 connect the air inlet section and the inner cavity of the dehumidification part, the surface of the dehumidification part facing the air outlet section is provided with multiple sieve holes 2 at intervals, the sieve holes 2 connect the air outlet section and the inner cavity of the dehumidification part, the air inlet duct 1 and the air outlet duct 2 connect the air inlet section, and the air inlet duct 2 and the air outlet duct 1 connect the air outlet section.

[0011] By adopting the above technical solution, the fresh air passes through the air inlet duct one, sequentially passes through the air inlet section and the sieve hole one, and impacts the molecular sieve in the dehumidification section. After the molecular sieve fully contacts and adsorbs the fresh air, it passes through the sieve hole two, sequentially passes through the air outlet section and the air outlet duct, and enters the crystallizer. The dry gas passes through the air inlet duct two, sequentially passes through the air outlet section and the sieve hole two, and impacts the molecular sieve in the dehumidification section. The molecular sieve fully contacts the dry gas and precipitates water molecules, thereby realizing the regeneration of the molecular sieve. The gas carrying water molecules passes through the sieve hole one, sequentially passes through the air inlet section and the air outlet duct two, and enters the condenser. The condenser cools and condenses the gas and then discharges it, thereby realizing efficient utilization of the molecular sieve.

[0012] Optionally, the recovery component also includes a contact switch and an elastic member, the contact switch is connected to the inner wall of the air inlet section, the contact switch is electrically connected to the pump body, one end of the elastic member in the elastic direction is connected to the inner wall of the air inlet section, and the other end of the elastic member in the elastic direction is connected to the surface of the dehumidification part, and the elastic member has a tendency to drive the dehumidification part to slide away from the contact switch by elastic force. When the water molecules adsorbed by the molecular sieve in the dehumidification part exceeds a preset value, the dehumidification part slides along the inner wall of the air inlet section toward the contact switch, the contact switch abuts the dehumidification section and is turned on, and the pump body is energized and runs.

[0013] By adopting the above technical solution, when the molecular sieve continuously absorbs water molecules and its own mass continues to increase, when the mass of the molecular sieve exceeds the preset value, the dehumidification part slides along the inner wall of the air inlet section toward the contact switch under the pressure of the molecular sieve, the contact switch abuts the dehumidification section and is turned on, the pump body is energized and runs, realizing directional start-up of the pump body, eliminating the need for staff to constantly observe the water content of the molecular sieve, thereby improving the ease of use of the dehumidification and drying system.

[0014] Optionally, the inner wall of the air inlet duct one is connected to a one-way valve one, and the one-way valve one supplies fresh air in the air inlet duct one into the air inlet section; the inner wall of the air outlet duct one is connected to a one-way valve two, and the one-way valve two supplies fresh air in the air outlet section into the air outlet duct one; the inner wall of the air inlet duct two is connected to a one-way valve three, and the one-way valve three supplies dry gas in the air inlet duct two into the air outlet section; the inner wall of the air outlet duct two is connected to a one-way valve four, and the one-way valve four supplies dry gas in the air inlet section into the air outlet duct two.

[0015] By adopting the above technical solution, the fresh air in the air inlet duct one enters the air inlet section through the one-way valve one, enters the air outlet section after passing through the molecular sieve to adsorb water molecules, and enters the air outlet duct one through the one-way valve two; at the same time, the dry gas in the air inlet duct two enters the air outlet section through the one-way valve three, enters the air inlet section after taking away the water molecules in the molecular sieve, and enters the air outlet duct two through the one-way valve four, thereby avoiding the occurrence of chaotic gas flow, thereby ensuring the stability of the dehumidification barrel operation.

[0016] The cam is connected to the cam face of the dehumidifier, and the cam face is connected to the cam face of the dehumidifier, and the cam face is connected to the cam face of the dehumidifier, and the cam face is connected to the cam face of the dehumidifier.

[0017] By adopting the above technical solution, the elastic force of the elastic part drives the dehumidification part to slide toward the air outlet section, driving the connecting rod 1 and the connecting rod 2 to rotate, driving the slider 1 to slide along the inner wall of the sliding chamber 1 toward the air outlet duct 2 and close the air outlet duct 2, and the slider 2 to slide along the inner wall of the sliding chamber 2 toward the air inlet duct 2 and close the air inlet duct 2; when the dehumidification part slides toward the air inlet section under the pressure of the molecular sieve and water molecules, it drives the connecting rod 1 and the connecting rod 2 to rotate, driving the slider 1 to slide along the inner wall of the sliding chamber 1 toward the air inlet duct 1 and close the air inlet duct 1, and the slider 2 to slide along the inner wall of the sliding chamber 2 toward the air outlet duct 1 and close the air outlet duct 1, thereby realizing the directional opening of each duct, and further improving the stability of the dehumidification barrel operation.

[0018] Optionally, the dehumidification part is rotatably connected to the inner wall of the fixed part, and the surface of the dehumidification part facing the air outlet section is provided with a sliding ring groove 2 for sliding of the slider 4, and the surface of the dehumidification part facing the air inlet section is provided with a sliding ring groove 1 for sliding of the slider 2.

[0019] By adopting the above technical solution, the dehumidification part rotates in the inner cavity of the fixed part, so that the molecular sieve is fully in contact with the fresh air and adsorbs water molecules, thereby improving the utilization rate of the molecular sieve. At the same time, it drives the slider 2 to slide on the inner wall of the sliding ring groove 1, and the slider 4 to slide on the inner wall of the sliding ring groove 2, so that the dehumidification part is not easily offset during rotation, thereby improving the stability of the dehumidification part in the inner cavity of the fixed part.

[0020] Optionally, an impeller is rotatably connected to the inner wall of the air outlet section, the impeller axis coincides with the dehumidification unit axis, the impeller rotation axis passes through the outer wall of the dehumidification unit, and the impeller blades are located in the inner cavity of the dehumidification unit. The air in the dehumidification unit impacts the impeller blades and drives the impeller to rotate.

[0021] By adopting the above technical solution, the impeller rotating shaft passes through the outer wall of the dehumidification section, and the impeller blades are located in the inner cavity of the dehumidification section. The gas in the dehumidification section impacts the impeller blades and drives the impeller to rotate. The impeller drives the gas to impact the molecular sieve, so that the molecular sieve is fully in contact with the gas and adsorbs water molecules, extending the contact time between the molecular sieve and the gas, thereby improving the dehumidification efficiency of the fresh air.

[0022] Optionally, a protective cover is connected to the inner wall of the dehumidification part facing the impeller, the protective cover shields the impeller blades, and a plurality of ventilation holes are spaced apart on the surface of the protective cover, the ventilation holes connect the inner cavity of the protective cover and the inner cavity of the dehumidification part.

[0023] By adopting the above technical solution, the protective cover shields the impeller blades, making it difficult for the impeller to hit the molecular sieve when rotating, thereby ensuring the integrity of the molecular sieve in the dehumidification section; at the same time, the ventilation holes connect the inner cavity of the protective cover and the inner cavity of the dehumidification section, and the fresh air in the dehumidification section enters the protective cover through the ventilation holes, hits the impeller blades, and is discharged from the second sieve hole, thereby ensuring the stability of the impeller rotation.

[0024] Optionally, the impeller rotating shaft is coaxially connected to a gear, the dehumidification part is provided with an internal tooth groove on the inner wall facing the gear, and the gear meshes with the tooth surface of the internal tooth groove.

[0025] By adopting the above technical solution, when the impeller rotates due to the impact of fresh air, the gears engage with the internal tooth surface, driving the dehumidification part to rotate in the inner cavity of the fixed part. No external power device is required to drive the dehumidification part to rotate, thereby reducing energy loss and embodying the concept of energy saving.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] The setting of the air inlet duct, air outlet duct, dehumidification barrel and molecular sieve ensures that the dew point of the fresh air is lower than the air dew point after the fresh air absorbs moisture in the crystallizer, so that the fresh air in the crystallizer can be directly discharged without installing a return air device. It is suitable for various working conditions, especially in the environment with organic volatiles, and reduces the dehumidification and drying steps of the crystallizer, thereby improving the dehumidification effect of the fresh air and extending its service life;

[0028] The second air inlet duct, the second air outlet duct, the gas tank and the pump body are set up. The condenser cools and condenses the air before discharging it, realizing the reuse of the molecular sieve and reducing the loss of materials, thus reflecting the concept of energy saving.

[0029] The setting of the fixed part and the dehumidification part realizes the regeneration of the molecular sieve, and the gas carrying water molecules passes through the sieve hole one, passes through the air inlet section and the air outlet duct two in sequence and enters the condenser. The condenser cools and condenses the gas and then discharges it, realizing the efficient utilization of the molecular sieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the overall structure of the dehumidification barrel in the embodiment of the present application.

[0032] Figure 3 It is a cross-sectional view of the dehumidification barrel in the embodiment of the present application.

[0033] Explanation of reference numerals: 1. condenser; 2. dehumidification assembly; 21. air inlet duct 1; 22. air outlet duct 1; 23. dehumidification barrel; 231. fixing portion; 2311. air inlet section; 2312. air outlet section; 2313. sliding cavity 1; 2314. sliding cavity 2; 232. dehumidification portion; 2321. sieve hole 1; 2322. sieve hole 2; 2323. positioning cavity; 2324. sliding ring groove 1; 2325. sliding ring groove 2; 2326. Internal tooth groove; 24. Molecular sieve; 3. One-way valve 1; 4. One-way valve 2; 5. Recovery component; 51. Air inlet duct 2; 52. Air outlet duct 2; 53. Contact switch; 54. Elastic part; 6. Opening and closing component; 61. Connecting rod 1; 62. Connecting rod 2; 63. Slider 2; 64. Slider 1; 65. Slider 3; 66. Slider 4; 7. Impeller; 8. Protective cover; 81. Ventilation hole; 9. Gear; 10. One-way valve 3; 11. One-way valve 4. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The present application embodiment discloses a dehumidification and drying system for a crystallizer. Figure 1 A dehumidification and drying system for a crystallizer includes a condenser 1 and a dehumidification component 2. The condenser 1 cools and condenses the fresh air to achieve preliminary dehumidification of the fresh air.

[0036] Reference Figure 2 and Figure 3 The dehumidification component 2 includes an air inlet duct 21, an air outlet duct 22, a dehumidification barrel 23 and multiple molecular sieves 24. The dehumidification barrel 23 includes a fixed part 231 and a dehumidification part 232. In the embodiment of the present application, the fixed part 231 and the dehumidification part 232 are both barrel bodies. The bottom of the fixed part 231 abuts the ground to form a support. The dehumidification part 232 is coaxially embedded in the inner cavity of the fixed part 231, and the dehumidification part 232 is slidably connected to the inner wall of the fixed part 231. The sliding direction of the dehumidification part 232 coincides with the axis of the fixed part 231.

[0037] Reference Figure 3The inner cavity of the dehumidification part 232 is used to store multiple molecular sieves 24. The dehumidification part 232 divides the inner cavity of the fixed part 231 into an air inlet section 2311 and an air outlet section 2312. The surface of the dehumidification part 232 facing the air inlet section 2311 is spaced apart with multiple sieve holes 1 2321. The sieve holes 1 2321 communicate with the air inlet section 2311 and the inner cavity of the dehumidification part 232. The surface of the dehumidification part 232 facing the air outlet section 2312 is spaced apart with multiple sieve holes 2322. Hole 2 2322 connects the air outlet section 2312 and the inner cavity of the dehumidification section 232. One end of the air inlet duct 121 is fixed to the air outlet end of the condenser 1 through a flange. The other end of the air inlet duct 21 is fixed to the surface of the fixed part 231 through a flange and connected to the inner cavity of the air inlet section 2311. One end of the air outlet duct 22 is fixed to the surface of the fixed part 231 through a flange and connected to the inner cavity of the air outlet section 2312. The other end of the air outlet duct 22 is fixed to the air inlet end of the crystallizer through a flange.

[0038] Reference Figure 3 A one-way valve 3 is installed on the inner wall of the air inlet duct 21 near the air inlet section 2311, and the one-way valve 3 allows the fresh air in the air inlet duct 21 to enter the air inlet section 2311. A one-way valve 24 is installed on the inner wall of the air outlet duct 22 near the air outlet section 2312, and the one-way valve 24 allows the fresh air in the air outlet section 2312 to enter the air outlet duct 22; when the fresh air enters the inner cavity of the condenser 1 through the air inlet end of the condenser 1, the condenser 1 cools down and condenses the fresh air to achieve preliminary dehumidification of the fresh air; the fresh air that has completed the preliminary dehumidification enters the inner cavity of the air inlet section 2311 through the air inlet duct 21 and the one-way valve 3, and the fresh air in the air inlet end enters the dehumidification part through the sieve hole 2321 The fresh air enters the inner cavity of 232 and impacts the molecular sieve 24. The molecular sieve 24 fully contacts with the fresh air and absorbs water molecules to achieve secondary dehumidification of the fresh air. The fresh air after secondary dehumidification passes through the sieve hole 2322 and enters the inner cavity of the air outlet section 2312. The fresh air in the air outlet section 2312 passes through the one-way valve 24 and the air outlet duct 1 22 in turn and enters the crystallizer, ensuring that the dew point of the fresh air is lower than the air dew point after the fresh air absorbs moisture in the crystallizer, so that the fresh air in the crystallizer is directly discharged without the need to install a return air device. The system is suitable for a variety of working conditions, especially in an environment with organic volatiles, and reduces the dehumidification and drying steps of the crystallizer, thereby improving the dehumidification effect of the fresh air and extending its service life.

[0039] Reference Figure 3The dehumidification barrel 23 is equipped with a recovery component 5, which can realize the regeneration of the molecular sieve 24. The recovery component 5 includes an air inlet pipe 51, an air outlet pipe 52, a gas tank, a pump body, a contact switch 53 and an elastic member 54. The gas tank is used to store dry gas. In the embodiment of the present application, the gas tank stores nitrogen. The gas tank is fixed to the air inlet end of the pump body through a pipe flange. One end of the air inlet pipe 51 is fixed to the air outlet end of the pump body through a flange. The other end of the air inlet pipe 51 is fixed to the surface of the fixing portion 231 through a flange and is connected to the air outlet section 2312. cavity, one end of the air outlet duct 252 is fixed to the surface of the fixing part 231 by a flange and is connected to the inner cavity of the air inlet section 2311, and the other end of the air outlet duct 252 is fixed to the air inlet end of the condenser 1 by a flange, and a one-way valve 3 10 is installed on the inner wall of the air inlet duct 251 near the air outlet section 2312. The one-way valve 3 10 supplies the dry gas in the air inlet duct 251 to enter the air outlet section 2312, and a one-way valve 4 11 is installed on the inner wall of the air inlet section 2311 of the air outlet duct 252. The one-way valve 4 11 supplies the gas in the air inlet section 2311 to enter the air outlet duct 252.

[0040] Reference Figure 3 , the contact switch 53 is installed on the inner wall of the air inlet section 2311, the contact switch 53 is electrically connected to the pump body, the elastic member 54 can be a compression spring or a tension spring. In the embodiment of the present application, the elastic member 54 is a compression spring with a certain deformation ability. The surface of the dehumidification part 232 facing the air inlet section 2311 is provided with a positioning cavity 2323 for accommodating the end of the elastic member 54, and a plurality of sieve holes 2321 are spaced apart and distributed on the inner wall of the positioning cavity 2323. The elastic force direction of the elastic member 54 is away from the end of the dehumidification part 232 and is connected to the inner wall of the fixed part 231. The elastic member 54 has a tendency to drive the dehumidification part 232 to slide in the direction away from the contact switch 53; in the embodiment of the present application, the preset value is the mass of the molecular sieve 24 in the saturated state. When the molecular sieve 24 is continuously When the adsorption of water molecules reaches saturation, the weight of the molecular sieve 24 itself exceeds the preset value. The dehumidification part 232 overcomes the elastic force of the elastic member 54 under the pressure of the molecular sieve 24 and the water molecules and slides toward the direction close to the contact switch 53. The contact switch 53 abuts the surface of the dehumidification part 232 and is turned on. The pump body is energized and runs. The pump body drives the dry gas in the gas tank into the inner cavity of the pump body through the pipeline. The dry gas in the pump body passes through the one-way valve three 10, the air outlet section 2312 and the sieve hole two 2322 through the air inlet pipeline two in turn and impacts the molecular sieve 24 in the dehumidification part 232. The dry gas fully contacts the molecular sieve 24 and takes away the water molecules in the molecular sieve 24, thereby realizing the regeneration of the molecular sieve 24 and reducing the loss of materials, thereby embodying the concept of energy saving.

[0041] Reference Figure 3The dehumidification barrel 23 is equipped with an opening and closing component 6, which can realize the directional start of each pipeline; the opening and closing component 6 includes a connecting rod 1 61, a connecting rod 2 62, a slider 1 64, a slider 2 63, a slider 3 65 and a slider 4 66. The inner wall of the air inlet section 2311 is provided with a sliding cavity 1 2313 for the sliding of the slider 1 64. The sliding direction of the slider 1 64 is perpendicular to the axis of the fixed part 231. The sliding cavity 1 2313 connects the air inlet duct 1 21 and the air outlet duct 2 52. The surface of the dehumidification part 232 facing the air inlet section 2311 is provided with a sliding ring groove 1 2324 for the sliding of the slider 2 63. The axis of the sliding ring groove 1 2324 coincides with the axis of the dehumidification part 232. One end of the connecting rod 1 61 is rotatably connected to the surface of the slider 1 64, and the other end of the connecting rod 1 61 is rotatably connected to the surface of the slider 2 63.

[0042] Reference Figure 3 The inner wall of the air outlet section 2312 is provided with a sliding cavity 2314 for sliding of the slider 3 65. The sliding direction of the slider 3 65 is parallel to the sliding direction of the slider 1 64. The sliding cavity 2314 is connected to the air outlet duct 1 22 and the air inlet duct 2 51. The surface of the dehumidifier 232 facing the air outlet section 2312 is provided with a sliding ring groove 2325 for sliding of the slider 4 66. The axis of the sliding ring groove 2325 coincides with the axis of the dehumidifier 232. One end of the connecting rod 2 62 is rotatably connected to the surface of the slider 3 65, and the other end of the connecting rod 2 62 is rotatably connected to the surface of the slider 4 66. When the elastic force of the elastic member 54 drives the dehumidifier 232 to slide in the direction close to the air outlet section 2312, the connecting rod 1 61 and the connecting rod 2 62 rotate, and the slider 1 64 moves along the inner wall of the sliding cavity 1 2313 toward It slides in the direction close to the air outlet duct 2 52, and the slider 1 64 closes the air outlet duct 2 52, and the slider 2 63 slides along the inner wall of the sliding cavity 2 2314 toward the air inlet duct 2 51, and the slider 2 63 closes the air inlet duct 2 51; when the dehumidification part 232 slides in the direction close to the air inlet section 2311 under the pressure of the molecular sieve 24 and water molecules, the connecting rod 1 61 and the connecting rod 2 62 rotate, and the slider 1 64 slides along the inner wall of the sliding cavity 1 2313 toward the air inlet duct 1 21, and the slider 1 64 closes the air inlet duct 1 21, and the slider 2 63 slides along the inner wall of the sliding cavity 2 2314 toward the air outlet duct 1 22, and the slider 2 63 closes the air outlet duct 1 22, thereby realizing the directional opening of each duct, thereby improving the stability of the operation of the dehumidification barrel 23.

[0043] Reference Figure 3The inner wall of the air outlet section 2312 is rotatably connected to the impeller 7, the axis of the impeller 7 coincides with the axis of the dehumidification section 232, the rotating shaft of the impeller 7 passes through the dehumidification section 232, and the impeller 7 blades are located in the inner cavity of the dehumidification section 232. The gas in the dehumidification section 232 impacts the impeller 7 blades and drives the impeller 7 to rotate, and then passes through the sieve hole 2322 into the air outlet section 2312. The impeller 7 rotates to guide the gas to impact the molecular sieve 24, and the molecular sieve 24 fully contacts the gas and adsorbs water molecules, further improving the dehumidification efficiency of the fresh air; the inner wall of the dehumidification section 232 facing the impeller 7 blades is fixed with a protective cover 8 by bolts, and the inner cavity of the protective cover 8 shields the impeller 7 blades to avoid the possibility of contact and damage between the impeller 7 blades and the molecular sieve 24, thereby extending the service life of the dehumidification and drying system used on the crystallizer.

[0044] Reference Figure 3 A plurality of ventilation holes 81 are provided at intervals on the surface of the protective cover 8. The ventilation holes 81 connect the inner cavity of the protective cover 8 and the inner cavity of the dehumidification section 232. The gas in the dehumidification section 232 impacts the blades of the impeller 7 through the ventilation holes 81, drives the blades of the impeller 7 to rotate, and is then discharged from the sieve hole 2322, thereby ensuring the stability of the rotation of the impeller 7.

[0045] Reference Figure 3 The dehumidification part 232 rotates around its own axis and is connected to the inner wall of the fixed part 231, so that the molecular sieve 24 is in full contact with the gas and adsorbs water molecules, thereby improving the utilization rate of the molecular sieve 24; the gear 9 is coaxially fixed to the rotating shaft of the impeller 7, and the dehumidification part 232 is provided with an internal tooth groove 2326 on the inner wall facing the gear 9, and the tooth surface of the internal tooth groove 2326 engages with the gear 9. When the impeller 7 is impacted by the gas and rotates, it drives the dehumidification part 232 to rotate on the inner wall of the fixed part 231. There is no need for an external power device to drive the dehumidification part 232 to rotate, which reduces energy loss and reflects the concept of energy saving.

[0046] The implementation principle of the dehumidification and drying system for a crystallizer in the embodiment of the present application is as follows: fresh air enters the inner cavity of condenser 1 through the air inlet end of condenser 1, and condenser 1 cools and condenses the fresh air to achieve preliminary dehumidification of the fresh air; the fresh air after preliminary dehumidification enters the inner cavity of air inlet section 2311 through air inlet duct 1 and one-way valve 13, and the fresh air in the air inlet end enters the inner cavity of dehumidification section 232 through sieve hole 1 2321 and impacts molecular sieve 24, which fully contacts the fresh air and adsorbs water molecules to achieve secondary dehumidification of the fresh air The fresh air that has completed the secondary dehumidification passes through the sieve hole 2322 and enters the inner cavity of the air outlet section 2312. The fresh air in the air outlet section 2312 passes through the one-way valve 24 and the air outlet duct 1 22 in turn and enters the crystallizer, ensuring that after the fresh air absorbs moisture in the crystallizer, the dew point of the fresh air is lower than the air dew point, so that the fresh air in the crystallizer is directly discharged without the need to install a return air device. It is suitable for a variety of working conditions, especially in an environment with organic volatiles, reducing the dehumidification and drying steps of the crystallizer, thereby improving the dehumidification effect of the fresh air and extending its service life.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A dehumidification and drying system for a crystallizer, characterized by: The dehumidifier comprises a condenser and a dehumidifier assembly, wherein the dehumidifier assembly comprises an air inlet duct, an air outlet duct, a dehumidifier barrel and a plurality of molecular sieves. The inner cavity of the dehumidifier barrel is used to store a plurality of molecular sieves. The air inlet end of the condenser is used to supply fresh air. One end of the air inlet duct is connected to the air outlet end of the condenser, and the other end of the air inlet duct is connected to the air inlet end of the dehumidifier barrel. One end of the air outlet duct is connected to the air outlet end of the dehumidifier barrel, and the other end of the air outlet duct is connected to the air inlet end of the crystallizer. The condenser can cool and condense the fresh air, and the molecular sieve can filter the water molecules in the fresh air. The wet barrel is connected to a recovery component, which includes an air inlet pipe 2, an air outlet pipe 2, a gas tank and a pump body. The air inlet end of the pump body is connected to the air outlet end of the gas tank through a pipe, the air outlet end of the pump body is connected to the air inlet end of the dehumidification barrel through the air inlet pipe 2, and the air outlet end of the dehumidification barrel is connected to the air inlet end of the condenser through the air outlet pipe 2. The pump body drives the dry gas in the gas tank to impact the molecular sieve in the dehumidification barrel, driving the saturated water molecules in the molecular sieve to escape, and the air in the dehumidification barrel is introduced into the air inlet end of the condenser through the air outlet pipe 2; the dehumidification barrel includes a fixing part and a dehumidification part. The wet part, the inner cavity of the dehumidifier is used to store multiple molecular sieves, the dehumidifier is slidably connected to the inner cavity wall of the fixed part, the dehumidifier divides the inner cavity of the fixed part into an air inlet section and an air outlet section, the surface of the dehumidifier facing the air inlet section is provided with multiple sieve holes 1 at intervals, the sieve holes 1 connect the air inlet section and the inner cavity of the dehumidifier, the surface of the dehumidifier facing the air outlet section is provided with multiple sieve holes 2 at intervals, the sieve holes 2 connect the air outlet section and the inner cavity of the dehumidifier, the air inlet duct 1 and the air outlet duct 2 connect the air inlet section, the air inlet duct 2 and the air outlet duct 1 connect the air outlet section; the recovery component The dehumidifier further comprises a contact switch and an elastic member, wherein the contact switch is connected to the inner wall of the air inlet section, the contact switch is electrically connected to the pump body, one end of the elastic member in the elastic direction is connected to the inner wall of the air inlet section, and the other end of the elastic member in the elastic direction is connected to the surface of the dehumidifier, and the elastic member has a tendency to cause the dehumidifier to slide in a direction away from the contact switch. When the water molecules adsorbed by the molecular sieve in the dehumidifier exceed a preset value, the dehumidifier slides along the inner wall of the air inlet section toward the contact switch, the contact switch abuts the dehumidifier section and is turned on, and the pump body is energized and operates;The dehumidifier barrel is connected to an opening and closing assembly, which includes a first connecting rod, a second connecting rod, a first slider, a second slider, a third slider, and a fourth slider. The inner wall of the air inlet section is provided with a sliding cavity 1 for sliding the first slider, the first sliding cavity communicating with the first air inlet duct and the second air outlet duct. The second slider is connected to a surface of the dehumidifier unit facing the air inlet section, one end of the first connecting rod is rotatably connected to the surface of the first slider, the other end of the first connecting rod is rotatably connected to the surface of the second slider, the inner wall of the air outlet section is provided with a sliding cavity 2 for sliding the third slider, the second sliding cavity communicating with the second air inlet duct and the first air outlet duct, the fourth slider is connected to a surface of the dehumidifier unit facing the air outlet section, one end of the second connecting rod is rotatably connected to the surface of the fourth slider, and the other end of the second connecting rod is rotatably connected to the surface of the third slider. The elastic member has an elastic force that drives the dehumidifier unit to slide toward the air outlet section, the first slider closes the second air outlet duct, and the third slider has a tendency to close the second air inlet duct.

2. A dehumidification and drying system for a crystallizer according to claim 1, characterized in that: The inner wall of the air inlet duct 1 (21) is connected to a one-way valve 1 (3), and the one-way valve 1 (3) supplies fresh air in the air inlet duct 1 (21) into the air inlet section (2311). The inner wall of the air outlet duct 1 (22) is connected to a one-way valve 2 (4), and the one-way valve 2 (4) supplies fresh air in the air outlet section (2312) into the air outlet duct 1 (22). The inner wall of the air inlet duct 2 (51) is connected to a one-way valve 3 (10), and the one-way valve 3 (10) supplies dry air in the air inlet duct 2 (51) into the air outlet section (2312). The inner wall of the air outlet duct 2 (52) is connected to a one-way valve 4 (11), and the one-way valve 4 (11) supplies dry air in the air inlet section (2311) into the air outlet duct 2 (52).

3. The dehumidification and drying system for a crystallizer according to claim 1, characterized in that: The dehumidifying portion (232) is rotatably connected to the inner wall of the fixing portion (231). The surface of the dehumidifying portion (232) facing the air outlet section (2312) is provided with a second sliding ring groove (2325) for sliding of the fourth slider (66). The surface of the dehumidifying portion (232) facing the air inlet section (2311) is provided with a first sliding ring groove (2324) for sliding of the second slider (63).

4. The dehumidification and drying system for a crystallizer according to claim 3, characterized in that: The inner wall of the air outlet section (2312) is rotatably connected to an impeller (7), the axis of the impeller (7) coincides with the axis of the dehumidification section (232), the rotating shaft of the impeller (7) passes through the outer wall of the dehumidification section (232), and the blades of the impeller (7) are located in the inner cavity of the dehumidification section (232), and the air in the dehumidification section (232) impacts the blades of the impeller (7) and drives the impeller (7) to rotate.

5. The dehumidification and drying system for a crystallizer according to claim 4, characterized in that: A protective cover (8) is connected to the inner wall of the dehumidifying section (232) facing the impeller (7), the protective cover (8) shielding the impeller (7) blades, and a plurality of ventilation holes (81) are spaced apart on the surface of the protective cover (8), the ventilation holes (81) communicating with the inner cavity of the protective cover (8) and the inner cavity of the dehumidifying section (232).

6. The dehumidification and drying system for a crystallizer according to claim 4, characterized in that: The impeller (7) rotation axis is coaxially connected to a gear (9), the dehumidifying portion (232) is provided with an inner tooth groove (2326) facing the inner wall of the gear (9), and the gear (9) engages with the tooth surface of the inner tooth groove (2326).

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