Dehumidifying and drying system for crystallizer

Abstract

The invention relates to the field of crystallizers, in particular to a dehumidification drying system for a crystallizer, which comprises a condenser and a dehumidification assembly, the dehumidification assembly comprises a first air inlet pipeline, a first air outlet pipeline, a dehumidification barrel and a plurality of molecular sieves, the multiple molecular sieves are stored in an inner cavity of the dehumidification barrel, one end of the first air inlet pipeline is connected to the air outlet end of the condenser, and the other end of the first air inlet pipeline is connected to the air outlet end of the condenser; the other end of the first air inlet pipeline is connected to the air inlet end of the dehumidification barrel, one end of the first air outlet pipeline is connected to the air outlet end of the dehumidification barrel, and the other end of the first air outlet pipeline is connected with the air inlet end of the crystallizer. Through the arrangement of the first air inlet pipeline, the first air outlet pipeline, the dehumidification barrel and the molecular sieve, it is guaranteed that the fresh air dew point is lower than the air dew point after moisture absorption is conducted on fresh air in the crystallization machine, the fresh air in the crystallization machine is directly discharged, an air return device does not need to be installed, and the crystallization machine is suitable for various working conditions, especially the environment of organic volatile matter; and the dehumidifying and drying steps of the crystallizer are reduced, so that the fresh air dehumidifying effect is improved, and the service life of the crystallizer is prolonged.

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, which 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 adjust the temperature and humidity in the crystallizer.

[0003] In the prior art, the fresh air needs to be cooled and dehumidified by a condenser before being introduced into the crystallizer. The cooled and dehumidified fresh air is introduced into the crystallizer to absorb moisture, so that the dew point of the fresh air discharged from the crystallizer is higher than the dew point of the air. The fresh air discharged from the crystallizer needs to be returned to the crystallizer 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 on fresh air, the present application provides a dehumidification and drying system for a crystallizer.

[0005] The present application provides a dehumidification and drying system for a crystallizer, which adopts the following technical solution: A dehumidification and drying system for a crystallizer comprises a condenser and a dehumidification component, wherein the dehumidification component comprises an air inlet duct, an air outlet duct, 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 end of the condenser is used to allow fresh air to enter, one end of the air inlet duct is connected to the air outlet end of the condenser, 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, 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.

[0006] By adopting the above technical scheme, 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 that has completed the preliminary dehumidification enters the air inlet end of the dehumidification 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 dehumidification barrel enters the air outlet end of the dehumidification 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 dehumidification 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 installing a return air device, which 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.

[0007] Optionally, the dehumidification barrel is connected to a recovery component, which includes an air inlet duct two, an air outlet duct two, 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 duct two, and the air outlet end of the dehumidification barrel is connected to the air inlet end of the condenser through the air outlet duct two. 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 air outlet duct two.

[0008] By adopting the above technical solution, the 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 the pipeline. The pump body drives the dry gas to enter the inner cavity of the dehumidification barrel from the air inlet end of the dehumidification barrel through the second air inlet pipeline. 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 pipeline. 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 reflecting the concept of energy saving.

[0009] 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.

[0010] By adopting the above technical scheme, the fresh air passes through the air inlet section and the sieve hole one in sequence through the air inlet duct one and impacts the molecular sieve in the dehumidification part. After the molecular sieve fully contacts and adsorbs the fresh air, it passes through the sieve hole two in sequence through the air outlet section and the air outlet duct and enters the crystallizer together; while the dry gas passes through the air inlet duct two in sequence through the air outlet section and the sieve hole two and impacts the molecular sieve in the dehumidification part. The molecular sieve fully contacts and precipitates water molecules, thereby realizing the regeneration of the molecular sieve, and the gas carrying water molecules passes through the sieve hole one in sequence 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 the efficient utilization of the molecular sieve.

[0011] Optionally, the recovery component also includes a contact switch and an elastic member, the contact switch being connected to the inner wall of the air inlet section, the contact switch being electrically connected to the pump body, one end of the elastic member in the elastic direction being connected to the inner wall of the air inlet section, the other end of the elastic member in the elastic direction being connected to the surface of the dehumidification section, the elastic member having a tendency to cause the dehumidification section to slide away from the contact switch due to elastic force, when the water molecules adsorbed by the molecular sieve in the dehumidification section exceed a preset value, the dehumidification section 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.

[0012] 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, and a directional start of the pump body is achieved. There is no need for the staff to always observe the water content of the molecular sieve, thereby improving the ease of use of the dehumidification and drying system.

[0013] 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.

[0014] 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, and 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, and the dry gas 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 operation of the dehumidifier barrel.

[0015] Optionally, the dehumidifier barrel is connected to an opening and closing assembly, and the opening and closing assembly includes connecting rod 1, connecting rod 2, slider 1, slider 2, slider 3 and slider 4, the inner wall of the air inlet section is provided with a sliding cavity 1 for sliding of slider 1, the sliding cavity 1 connects the air inlet duct 1 and the air outlet duct 2, the slider 2 is connected to the surface of the dehumidifier part facing the air inlet section, one end of the connecting rod 1 is rotatably connected to the surface of slider 1, and the other end of the connecting rod 1 is rotatably connected to the surface of slider 2, and the inner wall of the air outlet section is provided with a sliding cavity 2 for sliding of slider 3, the sliding cavity 2 connects the air inlet duct 2 and the air outlet duct 1, the slider 4 is connected to the surface of the dehumidifier part facing the air outlet section, one end of the connecting rod 2 is rotatably connected to the surface of slider 4, and the other end of the connecting rod 2 is rotatably connected to the surface of slider 3, the elastic member has elastic force to drive the dehumidifier part to slide in a direction close to the air outlet section, the slider 1 closes the air outlet duct 2, and the slider 3 has a tendency to close the air inlet duct 2.

[0016] By adopting the above technical solution, the elastic force of the elastic member drives the dehumidifier to slide in the direction close to the air outlet section, drives connecting rod 1 and connecting rod 2 to rotate, drives slider 1 to slide along the inner wall of sliding chamber 1 in the direction close to air outlet duct 2 and closes air outlet duct 2, and slider 2 slides along the inner wall of sliding chamber 2 in the direction close to air inlet duct 2 and closes air inlet duct 2; when the dehumidifier slides in the direction close to the air inlet section due to the pressure of the molecular sieve and water molecules, it drives connecting rod 1 and connecting rod 2 to rotate, drives slider 1 to slide along the inner wall of sliding chamber 1 in the direction close to air inlet duct 1 and closes air inlet duct 1, and slider 2 slides along the inner wall of sliding chamber 2 in the direction close to air outlet duct 1 and closes air outlet duct 1, thereby realizing directional opening of each duct and further improving the stability of the operation of the dehumidifier barrel.

[0017] 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.

[0018] By adopting the above technical solution, the dehumidifier 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, the slider 2 is driven to slide on the inner wall of the sliding ring groove 1, and the slider 4 is driven to slide on the inner wall of the sliding ring groove 2, so that the dehumidifier is not easy to deviate when rotating, thereby improving the stability of the dehumidifier in the inner cavity of the fixed part.

[0019] Optionally, the inner wall of the air outlet section is rotatably connected to an impeller, the impeller axis coincides with the axis of the dehumidifier, the impeller rotation axis passes through the outer wall of the dehumidifier, and the impeller blades are located in the inner cavity of the dehumidifier, and the air in the dehumidifier impacts the impeller blades and drives the impeller to rotate.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Optionally, the impeller rotating shaft is coaxially connected with 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.

[0024] By adopting the above technical solution, when the impeller rotates due to the impact of fresh air, the gears mesh 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.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The setting of air inlet duct 1, air outlet duct 1, dehumidification barrel and molecular sieve ensures that the fresh air dew point is lower than the air dew point after absorbing 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 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; 2. 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, so as to realize the reuse of the molecular sieve and reduce the consumption of materials, thus reflecting the concept of energy saving; 3. 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

[0026] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the overall structure of the dehumidification barrel in an embodiment of the present application.

[0028] Figure 3 It is a cross-sectional view of the dehumidification barrel in the embodiment of the present application.

[0029] Description 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 one; 4, one-way valve two; 5, recovery component; 51, air inlet duct two; 52, air outlet duct two; 53, contact switch; 54, elastic part; 6, opening and closing component; 61, connecting rod one; 62, connecting rod two; 63, slider two; 64, slider one; 65, slider three; 66, slider four; 7, impeller; 8, protective cover; 81, ventilation hole; 9, gear; 10, one-way valve three; 11, one-way valve four. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] 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 fresh air to achieve preliminary dehumidification of the fresh air.

[0032] 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 a plurality of molecular sieves 24. The dehumidification barrel 23 includes a fixed portion 231 and a dehumidification portion 232. In the embodiment of the present application, the fixed portion 231 and the dehumidification portion 232 are both barrel bodies. The bottom of the fixed portion 231 abuts against the ground to form a support. The dehumidification portion 232 is coaxially embedded in the inner cavity of the fixed portion 231, and the dehumidification portion 232 is slidably connected to the inner wall of the fixed portion 231. The sliding direction of the dehumidification portion 232 coincides with the axis of the fixed portion 231.

[0033] Reference Figure 3The inner cavity of the dehumidification part 232 is used to store a plurality of 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 provided with a plurality of sieve holes 1 2321 at intervals. 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 provided with a plurality of sieve holes 2 2322 at intervals. Hole 2322 connects the air outlet section 2312 and the inner cavity of the dehumidification section 232, one end of the air inlet duct 21 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 fixing 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 fixing part 231 through a flange and connected to the inner cavity of the air outlet section 2312, and the other end of the air outlet duct 22 is fixed to the air inlet end of the crystallizer through a flange.

[0034] 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 supplies 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 supplies 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 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 section through the sieve hole 2321 The molecular sieve 24 fully contacts with the fresh air and absorbs water molecules, thereby realizing 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, thereby realizing direct discharge of the fresh air in the crystallizer without installing a return air device. The system 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.

[0035] 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 duct 51, an air outlet duct 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 pipeline flange. One end of the air inlet duct 51 is fixed to the air outlet end of the pump body through a flange. The other end of the air inlet duct 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 portion 231 by a flange and is connected to the inner cavity of the air inlet section 2311, the other end of the air outlet duct 252 is fixed to the air inlet end of the condenser 1 by a flange, a one-way valve 3 10 is installed on the inner wall of the air inlet duct 251 close to the air outlet section 2312, and 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 outlet duct 252 close to the air inlet section 2311, and the one-way valve 4 11 supplies the gas in the air inlet section 2311 to enter the air outlet duct 252.

[0036] 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, and 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 distributed at intervals 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 connected to the inner wall of the fixed part 231, and 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, and when the molecular sieve 24 is continuously When the adsorption of water molecules reaches saturation, the weight of the molecular sieve 24 exceeds the preset value, and the dehumidification part 232 is subjected to the pressure of the molecular sieve 24 and the water molecules to overcome the elastic force of the elastic member 54 and slide toward the direction close to the contact switch 53. The contact switch 53 abuts against the surface of the dehumidification part 232 and guides the drawing. The pump body is energized and runs. The pump body drives the dry gas in the gas tank into the pump body cavity 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 reflecting the concept of energy saving.

[0037] 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 and the axis of the fixed part 231 are perpendicular to each other. 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.

[0038] 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 and the sliding direction of the slider 1 64 are parallel to each other, 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 The slider 1 64 slides in the direction close to the air outlet duct 52, and the slider 2 63 slides along the inner wall of the sliding chamber 2314 toward the air inlet duct 51, and the slider 2 63 closes the air inlet duct 51; when the dehumidifier 232 slides in the direction close to the air inlet section 2311 under the pressure of the molecular sieve 24 and the 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 chamber 2313 toward the air inlet duct 21, and the slider 1 64 closes the air inlet duct 21, and the slider 2 63 slides along the inner wall of the sliding chamber 2314 toward the air outlet duct 22, and the slider 2 63 closes the air outlet duct 22, thereby realizing the directional opening of each duct, thereby improving the stability of the operation of the dehumidifier barrel 23.

[0039] Reference Figure 3The inner wall of the air outlet section 2312 is rotatably connected with 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 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 enters the air outlet section 2312 through the sieve hole 2322, and the impeller 7 rotates to guide the gas to impact the molecular sieve 24, 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 the impeller 7 blades contacting and being damaged by the molecular sieve 24, thereby extending the service life of the dehumidification and drying system used on the crystallizer.

[0040] Reference Figure 3 A plurality of ventilation holes 81 are provided on the surface of the protective cover 8 at intervals, and 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 discharged from the sieve hole 2322, thereby ensuring the stability of the rotation of the impeller 7.

[0041] Reference Figure 3 The dehumidifier 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 fully in contact with the gas and adsorbs water molecules, thereby improving the utilization rate of the molecular sieve 24; the impeller 7 rotating shaft is coaxially fixed with a gear 9, and the dehumidifier 232 is provided with an inner tooth groove 2326 on the inner wall facing the gear 9, and the tooth surface of the inner tooth groove 2326 meshes with the gear 9. When the impeller 7 is rotated by the impact of the gas, the dehumidifier 232 is driven to rotate on the inner wall of the fixed part 231. There is no need for an external power device to drive the dehumidifier 232 to rotate, which reduces energy loss and embodies the concept of energy saving.

[0042] 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 that has completed preliminary dehumidification enters the inner cavity of air inlet section 2311 through air inlet duct 121 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 12321 and impacts molecular sieve 24, and molecular sieve 24 fully contacts with the fresh air and adsorbs water molecules to achieve secondary dehumidification of the fresh air. The fresh air after 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 the fresh air has a dew point lower than the air dew point after absorbing moisture in the crystallizer, so that the fresh air in the crystallizer is directly discharged without installing 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.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dehumidification and drying system for a crystallizer, characterized in that: The invention comprises a condenser (1) and a dehumidification component (2), wherein the dehumidification component (2) comprises an air inlet duct (21), an air outlet duct (22), a dehumidification barrel (23) and a plurality of molecular sieves (24); the inner cavity of the dehumidification barrel (23) is used to store the plurality of molecular sieves (24); the air inlet end of the condenser (1) is used to allow fresh air to enter; one end of the air inlet duct (21) is connected to the air outlet end of the condenser (1); the other end of the air inlet duct (21) is connected to the air inlet end of the dehumidification barrel (23); one end of the air outlet duct (22) is connected to the air outlet end of the dehumidification barrel (23); the other end of the air outlet duct (22) is connected to the air inlet end of a crystallizer; the condenser (1) can cool and condense the fresh air; and the molecular sieve (24) can filter water molecules in the fresh air.

2. A dehumidification and drying system for a crystallizer according to claim 1, characterized in that: The dehumidification barrel (23) is connected to a recovery component (5), and the recovery component (5) comprises a second air inlet duct (51), a second air outlet duct (52), 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 (23) through the second air inlet duct (51), and the air outlet end of the dehumidification barrel (23) is connected to the air inlet end of the condenser (1) through the second air outlet duct (52). The pump body drives the dry gas in the gas tank to impact the molecular sieve (24) in the dehumidification barrel (23), so as to drive the saturated water molecules in the molecular sieve (24) to escape, and the air in the dehumidification barrel (23) is passed into the air inlet end of the condenser (1) through the second air outlet duct (52).

3. A dehumidification and drying system for a crystallizer according to claim 2, characterized in that: The dehumidification barrel (23) comprises a fixed portion (231) and a dehumidification portion (232); the inner cavity of the dehumidification portion (232) is used to store a plurality of molecular sieves (24); the dehumidification portion (232) is slidably connected to the inner cavity wall of the fixed portion (231); the dehumidification portion (232) divides the inner cavity of the fixed portion (231) into an air inlet section (2311) and an air outlet section (2312); a plurality of sieve holes (2321) are spaced apart on the surface of the dehumidification portion (232) facing the air inlet section (2311); the sieve holes One (2321) connects the air inlet section (2311) and the inner cavity of the dehumidification section (232); a plurality of sieve holes (2322) are spaced apart on the surface of the dehumidification section (232) facing the air outlet section (2312); the sieve holes (2322) connect the air outlet section (2312) and the inner cavity of the dehumidification section (232); the air inlet duct one (21) and the air outlet duct two (52) connect the air inlet section (2311); the air inlet duct two (51) and the air outlet duct one (22) connect the air outlet section (2312).

4. A dehumidification and drying system for a crystallizer according to claim 3, characterized in that: The recovery component (5) further comprises a contact switch (53) and an elastic member (54); the contact switch (53) is connected to the inner wall of the air inlet section (2311); the contact switch (53) is electrically connected to the pump body; one end of the elastic member (54) in the elastic direction is connected to the inner wall of the air inlet section (2311); the other end of the elastic member (54) in the elastic direction is connected to the surface of the dehumidification section (232); the elastic member (54) has a tendency to cause the dehumidification section (232) to slide in a direction away from the contact switch (53); when the water molecules adsorbed by the molecular sieve (24) in the dehumidification section (232) exceed a preset value, the dehumidification section (232) slides along the inner wall of the air inlet section (2311) in a direction close to the contact switch (53); the contact switch (53) abuts against the dehumidification section and is turned on, and the pump body is energized and operates.

5. The dehumidification and drying system for a crystallizer according to claim 3, characterized in that: The inner wall of the air inlet duct one (21) is connected to a one-way valve one (3), and the one-way valve one (3) allows fresh air in the air inlet duct one (21) to enter the air inlet section (2311). The inner wall of the air outlet duct one (22) is connected to a one-way valve two (4), and the one-way valve two (4) allows fresh air in the air outlet section (2312) to enter the air outlet duct one (22). The inner wall of the air inlet duct two (51) is connected to a one-way valve three (10), and the one-way valve three (10) allows dry gas in the air inlet duct two (51) to enter the air outlet section (2312). The inner wall of the air outlet duct two (52) is connected to a one-way valve four (11), and the one-way valve four (11) allows dry gas in the air inlet section (2311) to enter the air outlet duct two (52).

6. A dehumidification and drying system for a crystallizer according to claim 4, characterized in that: The dehumidification barrel (23) is connected to an opening and closing assembly (6), and the opening and closing assembly (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 slider 1 (64) to slide. The sliding cavity 1 (2313) is connected to the air inlet duct 1 (21) and the air outlet duct 2 (52). The slider 2 (63) is connected to the surface of the dehumidification part (232) facing the air inlet section (2311). 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). The inner wall of the section (2312) is provided with a sliding cavity 2 (2314) for sliding of the sliding block 3 (65), the sliding cavity 2 (2314) is connected to the air inlet duct 2 (51) and the air outlet duct 1 (22), the sliding block 4 (66) is connected to the surface of the dehumidifier (232) facing the air outlet section (2312), one end of the connecting rod 2 (62) is rotatably connected to the surface of the sliding block 4 (66), and the other end of the connecting rod 2 (62) is rotatably connected to the surface of the sliding block 3 (65), the elastic member (54) has an elastic force to drive the dehumidifier (232) to slide in the direction close to the air outlet section (2312), the sliding block 1 (64) closes the air outlet duct 2 (52), and the sliding block 3 (65) has a tendency to close the air inlet duct 2 (51).

7. A dehumidification and drying system for a crystallizer according to claim 6, characterized in that: The dehumidification part (232) is rotatably connected to the inner wall of the fixed part (231), and a sliding ring groove 2 (2325) for sliding of a sliding block 4 (66) is provided on the surface of the dehumidification part (232) facing the air outlet section (2312), and a sliding ring groove 1 (2324) for sliding of a sliding block 2 (63) is provided on the surface of the dehumidification part (232) facing the air inlet section (2311).

8. A dehumidification and drying system for a crystallizer according to claim 7, 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 rotation axis of the impeller (7) passes through the outer wall of the dehumidification section (232); and the impeller (7) blades are located in the inner cavity of the dehumidification section (232); the air in the dehumidification section (232) impacts the impeller (7) blades and drives the impeller (7) to rotate.

9. A dehumidification and drying system for a crystallizer according to claim 8, characterized in that: A protective cover (8) is connected to the inner wall of the dehumidification section (232) facing the impeller (7), the protective cover (8) shielding the impeller (7) blades, and a plurality of ventilation holes (81) are provided at intervals on the surface of the protective cover (8), the ventilation holes (81) connecting the inner cavity of the protective cover (8) and the inner cavity of the dehumidification section (232).

10. The dehumidification and drying system for a crystallizer according to claim 8, 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) on the inner wall facing the gear (9), and the gear (9) meshes with the tooth surface of the inner tooth groove (2326).

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