Low-temperature drying equipment and drying method for preparing sea cucumber peptide

Abstract

The invention provides low-temperature drying equipment and a drying method for preparing sea cucumber polypeptide, and relates to the technical field of low-temperature drying, the low-temperature drying equipment comprises a fixing frame, a first fan, a filtering dryer, a refrigerating unit and an atomizing chamber are sequentially installed on the surface of the fixing frame from left to right, and a gas sensor and a vibrator are arranged on the right side of the fixing frame; a centrifugal sprayer is arranged in the atomizing chamber, a separation chamber is arranged on the right side of the atomizing chamber, a plurality of filter plates are arranged in the separation chamber in an annular array mode, an air return pipe is arranged on the surface of the separation chamber, and the two ends of the air return pipe are located in first circular grooves symmetrically formed in the surface of the separation chamber respectively. A circular plate with holes is arranged in the air return pipe, and a plurality of fan-shaped plugging pads are arranged on the surface of the circular plate with holes in an annular array mode. According to the invention, the separation efficiency of the sea cucumber peptide freeze-dried powder with relatively fine particles can be improved, and part of gas in the separation chamber is subjected to reflux circulation, so that the separation efficiency of water vapor and the sea cucumber peptide freeze-dried powder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of low-temperature drying, in particular to low-temperature drying equipment and a drying method for preparing sea cucumber peptides. Background Art

[0002] Sea cucumber peptide is a bioactive peptide extracted from sea cucumbers, containing a variety of proteins, amino acids, minerals and bioactive substances.

[0003] The preparation method of sea cucumber peptides often uses enzymatic hydrolysis. By using specific enzymes to hydrolyze sea cucumbers, their proteins can be decomposed into small molecular peptides. After the enzymatic hydrolysis, the unhydrolyzed solid part and the small molecular peptides in the liquid phase are often separated by centrifugation, so as to further collect and purify the sea cucumber peptides in the liquid phase. After purification, the sea cucumber peptides are often made into freeze-dried powder using low-temperature drying equipment to maintain their biological activity. Existing low-temperature drying equipment is often used in conjunction with a cyclone separator to facilitate the collection of sea cucumber peptide freeze-dried powder. The cyclone separator has a better separation effect on larger particles, but a relatively lower effect on finer particles. For sea cucumber peptide freeze-dried powder containing powders of different particle sizes, especially finer powders, the cyclone separator has limited separation effect on them, which can easily lead to partial leakage of powder. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a low-temperature drying device for preparing sea cucumber peptides. By using a filter plate, finer particles of sea cucumber peptide freeze-dried powder can be intercepted and deposited and collected by the action of centrifugal force and gravity. By setting a return air pipe, the gas inside the separation chamber can be controlled to reflux and circulate in a certain proportion to increase the separation efficiency of water vapor and sea cucumber peptide freeze-dried powder.

[0005] In order to solve the above technical problems, the technical solution of the present invention is as follows: A low-temperature drying device for preparing sea cucumber peptides comprises a fixed frame, on the surface of which a first fan, a filter dryer, a refrigeration unit, and an atomization chamber are sequentially installed from left to right, a gas sensor and a vibrator are arranged on the right side of the fixed frame, and further comprises: The interior of the atomization chamber is provided with a centrifugal sprayer for atomizing the purified liquid-phase sea cucumber peptide, so that the dry cold air blown into the interior of the atomization chamber from the refrigeration unit can dry the liquid-phase sea cucumber peptide; A separation chamber is provided on the right side of the atomization chamber, which is used to separate the sea cucumber peptide freeze-dried powder from the airflow blown into the separation chamber by the atomization chamber; The interior of the separation chamber is provided with a plurality of filter plates in an annular array, which are used to improve the filtering efficiency of the separation chamber for the sea cucumber peptide freeze-dried powder; The surface of the separation chamber is provided with an air return pipe, and the two ends of the air return pipe are respectively located in the first circular grooves symmetrically opened on the surface of the separation chamber, and the air return pipe is used to further improve the filtering efficiency of the filter plate on the sea cucumber peptide freeze-dried powder; A circular plate with holes is arranged inside the return air pipe, and a plurality of fan-shaped blocking pads are arranged in a ring array on the surface of the circular plate with holes, and the fan-shaped blocking pads are used to block the small holes on the surface of the circular plate with holes to control the reflux ratio of the airflow inside the separation chamber; A collecting box is provided at the bottom of the separation chamber, so that the separated sea cucumber peptide freeze-dried powder can be taken out from the inside of the device in time to reduce the probability of the sea cucumber peptide freeze-dried powder mixing with water vapor again.

[0006] Furthermore, a flow equalizing plate is fixedly connected to the interior of the atomizing chamber, a centrifugal sprayer is installed in a mounting groove opened on the surface of the flow equalizing plate, an air guide pipe is fixedly connected to the second circular groove opened on the surface of the atomizing chamber, the air guide pipe is connected to the air outlet of the refrigeration unit, a feed pipe is fixedly connected to the feed port of the centrifugal sprayer, the feed pipe passes through the surface of the atomizing chamber and extends to the outside of the atomizing chamber, the feed pipe is fixedly connected to the atomizing chamber, the atomizing chamber is connected to the air inlet of the separation chamber through a U-shaped tube, and the vibrator is installed on the surface of the separation chamber.

[0007] Furthermore, a fixed shaft is provided inside the separation chamber, and the fixed shaft is rotatably connected to two third circular grooves opened on the surface of the separation chamber through two first bearings. The filter plate is fixedly connected to the surface of the fixed shaft in an annular array, and the filter plate is in contact with the planar inner wall of the separation chamber, and the filter plate is not in contact with the curved inner wall of the separation chamber.

[0008] Furthermore, a perforated circular plate is fixedly connected to the right side pipe opening of the return air duct, the gas sensor is installed at a position on the surface of the separation chamber close to the perforated circular plate, a side of the perforated circular plate away from the separation chamber is fixedly connected to a plurality of adjusting blocks in a ring array, a rotating block is hinged on the surface of the adjusting block, the fan-shaped sealing pad is fixedly connected to the rotating block, and the fan-shaped sealing pad is penetrated into a rectangular through groove opened on the surface of the adjusting block, a first motor is installed on the surface of the perforated circular plate, a driving gear is fixedly connected to the end of the output shaft of the first motor, a driven gear is fixedly connected to the surface of the rotating block, a central axis of the driven gear coincides with the rotating axis of the rotating block rotating around the adjusting block, and the driven gears are meshingly connected to the driving gear, and a second fan is installed in the left side pipe opening of the return air duct.

[0009] Furthermore, two arc-shaped grooves are provided on the surface of the adjustment block, and the curvature and arc length of the two arc-shaped grooves respectively correspond to the two arc-shaped edges of the fan-shaped sealing pad, and an I-shaped block is provided inside the arc-shaped groove, and the I-shaped block is slidingly connected to the adjustment block through the arc-shaped groove, and the I-shaped block is fixedly connected to the fan-shaped sealing pad, and a spring rope is provided inside the arc-shaped groove, and the two ends of the spring rope are respectively fixedly connected to the adjustment block and the I-shaped block.

[0010] Furthermore, a material passing trough is provided on the surface of the separation chamber near the bottom, the collecting box is fixedly connected to the surface of the separation chamber, the material passing trough is located inside the collecting box, a sealing door is hinged on the surface of the collecting box, a second motor is installed inside the collecting box, a cross-shaped scraper is fixedly connected to the end of the output shaft of the second motor, and the upper surface and bottom surface of the cross-shaped scraper are in conflict with the inner wall of the collecting box.

[0011] Furthermore, a fixed cylinder is fixedly connected to the surface of the separation chamber, an electric push rod is installed inside the fixed cylinder, a compression spring is arranged inside the fixed cylinder, a connecting plate and a friction plate are fixedly connected to both ends of the compression spring, the connecting plate and the friction plate are both slidably connected to the fixed cylinder, the friction plate is always in conflict with the fixed shaft, and the output shaft of the electric push rod is fixedly connected to the connecting plate.

[0012] Furthermore, support bars are evenly embedded in the interior of the sector-shaped sealing pad, and the central axes of the support bars intersect with the rotation axis of the sector-shaped sealing pad.

[0013] Furthermore, a constraint groove is provided on the surface of the rotating block, a T-shaped slider is arranged inside the constraint groove, the T-shaped slider is slidably connected to the rotating block, a U-shaped pressure rod is arranged between the rotating block and the adjusting block, the U-shaped pressure rod is rotatably connected to the rotating block and the adjusting block through two bearing seats, and the surface of the U-shaped pressure rod is always in contact with the part of the fan-shaped sealing pad located on the surface of the perforated circular plate.

[0014] Furthermore, a low-temperature drying method for preparing sea cucumber peptides comprises the following steps: Step 1, inserting the feed pipe into the purified liquid phase sea cucumber peptide container, starting the centrifugal sprayer, and allowing the cold air flow blown into the atomization chamber to perform low temperature drying on the atomized liquid phase sea cucumber peptide; Step 2, the airflow entering the atomization chamber carries sublimated water vapor and sea cucumber peptide freeze-dried powder through a U-shaped elbow into the separation chamber, a portion of the sea cucumber peptide freeze-dried powder hits the inner wall of the separation chamber under the action of centrifugal force and gravity and gathers to the bottom of the separation chamber, a portion of the sea cucumber peptide freeze-dried powder is intercepted by the filter plate and gathers to the bottom of the separation chamber under the action of gravity, and the water vapor is discharged from the separation chamber through the air outlet of the separation chamber; Step three, when the content of sea cucumber peptide freeze-dried powder in the airflow at the gas sensor exceeds the set value, the second fan and the first motor are started, the operation of the first motor causes the rotating block to rotate around the adjusting block, and drives the fan-shaped blocking pad to move on the surface of the perforated circular plate to change the permeability of the small holes on the surface of the perforated circular plate, and the operation of the second fan causes the airflow to return from the small holes on the surface of the perforated circular plate through the return air pipe to the interior of the separation chamber near the air inlet of the separation chamber, thereby increasing the separation efficiency of the sea cucumber peptide freeze-dried powder of the reflux airflow; Step 4: regularly take out the sea cucumber peptide freeze-dried powder from the inside of the collection box to reduce the probability of the sea cucumber peptide freeze-dried powder being re-mixed with water vapor.

[0015] The above solution of the present invention includes at least the following beneficial effects: The above scheme of the present invention can improve the separation efficiency of sea cucumber peptide freeze-dried powder by setting the filter plates in an annular array inside the separation chamber, and can control the rotation rate of the filter plates under the influence of airflow by controlling the extrusion force of the friction plate on the fixed shaft, so as to ensure the separation effect of the filter plates on the sea cucumber peptide freeze-dried powder and water vapor; By setting up the collection box, the cross-shaped scraper and the feeding trough, the sea cucumber peptide freeze-dried powder can be taken out regularly, reducing the secondary mixing and contamination of the sea cucumber peptide freeze-dried powder and water vapor; By adjusting the blockage rate of the small holes on the surface of the perforated circular plate by the fan-shaped sealing pad, the filtration efficiency of the filter plate and the separation efficiency of the sea cucumber peptide freeze-dried powder from water vapor under the action of centrifugal force and gravity are improved, so that the device has the ability to dynamically adjust the separation efficiency of the sea cucumber peptide. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure provided by the present invention.

[0017] Figure 2 It is a schematic diagram of the current equalizing plate in the present invention.

[0018] Figure 3 It is a schematic diagram of the compression spring in the present invention.

[0019] Figure 4 It is a schematic diagram of the cross-shaped scraper in the present invention.

[0020] Figure 5 It is a schematic diagram of the adjustment block in the present invention.

[0021] Figure 6 It is a schematic diagram of the driven gear in the present invention.

[0022] Figure 7 It is a schematic diagram of the U-shaped pressure rod in the present invention.

[0023] Figure 8 The present invention Figure 6 Enlarged view of point A in the middle.

[0024] Fig. 9 The present invention Figure 7 Enlarged view of point B in the middle.

[0025] Fig.10 It is a schematic diagram of the support bar in the present invention.

[0026] In the figure: 101, fixed frame; 102, first fan; 103, filter dryer; 104, refrigeration unit; 105, atomization chamber; 106, gas sensor; 107, vibrator; 201, centrifugal sprayer; 202, flow equalizing plate; 203, feed pipe; 204, air guide pipe; 205, separation chamber; 206, fixed shaft; 207, filter plate; 208, return air pipe; 209, circular plate with holes; 210, first motor; 211, driving gear; 212, driven gear; 213, adjustment block; 214, rotating block; 215, fan-shaped plugging pad; 216, constraint groove; 217, T shaped slider; 218, U-shaped pressure rod; 219, arc groove; 220, I-shaped block; 221, spring rope; 222, collecting box; 223, sealing door; 224, M-shaped scraper; 225, second motor; 226, material trough; 227, fixing cylinder; 228, electric push rod; 229, connecting piece; 230, compression spring; 231, friction plate; 232, second fan; 234, support bar. DETAILED DESCRIPTION

[0027] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0028] like Figures 1 to 10 As shown, an embodiment of the present invention provides a low-temperature drying device for preparing sea cucumber peptides, including a fixed frame 101, on the surface of the fixed frame 101, a first fan 102, a filter dryer 103, a refrigeration unit 104, and an atomization chamber 105 are installed in sequence from left to right, and a gas sensor 106 and a vibrator 107 are arranged on the right side of the fixed frame 101, and also include: A centrifugal sprayer 201 is provided inside the atomizing chamber 105 for atomizing the purified liquid-phase sea cucumber peptide so that the dry cold air blown into the atomizing chamber 105 from the refrigerating unit 104 can dry the liquid-phase sea cucumber peptide; A separation chamber 205 is provided on the right side of the atomization chamber 105, which is used to separate the sea cucumber peptide freeze-dried powder from the airflow blown into the separation chamber 205 by the atomization chamber 105; A plurality of filter plates 207 are arranged in a circular array inside the separation chamber 205 to improve the filtering efficiency of the sea cucumber peptide freeze-dried powder by the separation chamber 205; The surface of the separation chamber 205 is provided with a return air pipe 208, and the two ends of the return air pipe 208 are respectively located in the first circular groove symmetrically opened on the surface of the separation chamber 205, and the return air pipe 208 is used to further improve the filtering efficiency of the sea cucumber peptide freeze-dried powder by the filter plate 207; A perforated circular plate 209 is disposed inside the return air pipe 208. A plurality of fan-shaped blocking pads 215 are disposed on the surface of the perforated circular plate 209 in an annular array. The fan-shaped blocking pads 215 are used to block the small holes on the surface of the perforated circular plate 209 to control the reflux ratio of the airflow inside the separation chamber 205. A collecting box 222 is provided at the bottom of the separation chamber 205, so that the separated sea cucumber peptide freeze-dried powder can be taken out from the inside of the device in time to reduce the probability of the sea cucumber peptide freeze-dried powder mixing with water vapor again.

[0029] In the embodiment of the present invention, by starting the first fan 102 on the fixed frame 101, the airflow is pumped from the first fan 102 through the pipeline into the interior of the filter dryer 103 for filtering and drying, the dried airflow is passed through the pipeline into the interior of the refrigeration unit 104 for cooling, and the cooled airflow enters the interior of the atomization chamber 105 through the pipeline to dry the atomized sea cucumber peptide droplets in the atomization chamber 105; The sea cucumber peptide freeze-dried powder and water vapor generated after drying are blown into the separation chamber 205 under the action of strong airflow, and a small amount of sea cucumber peptide freeze-dried powder will be deposited in the atomization chamber 105, and this part of sea cucumber peptide can be collected when cleaning the device; The airflow entering the separation chamber 205 along a tangential angle close to the separation chamber 205 will cause the sea cucumber peptide freeze-dried powder to have a tendency to collide with the inner wall of the separation chamber 205 under the action of gravity. At the same time, when the airflow flows along the curved inner wall of the separation chamber 205, part of the sea cucumber peptide freeze-dried powder will be filtered by the filter plate 207, of which part of the freeze-dried powder will adhere to the surface of the filter plate 207, and part of it will gather at the bottom of the separation chamber 205 under the action of gravity, and then be collected and taken out from the collection box 222. When the gas sensor 106 detects that the content of the sea cucumber peptide freeze-dried powder in the airflow has not decreased to the set value, according to the content of the sea cucumber peptide freeze-dried powder at this position, the atomization chamber 105 blocks the small holes on the surface of the perforated circular plate 209 in a moving proportion, so that part of the airflow returns to the position of the separation chamber 205 near the atomization chamber 105 from the return pipe 208 at a certain proportion, so that the number of contacts between the airflow and the filter plate 207 is increased, so as to improve the separation efficiency of the sea cucumber peptide freeze-dried powder.

[0030] like Figure 2 As shown, a flow equalizing plate 202 is fixedly connected to the inside of the atomizing chamber 105, a centrifugal sprayer 201 is installed in a mounting groove opened on the surface of the flow equalizing plate 202, an air guide pipe 204 is fixedly connected to the second circular groove opened on the surface of the atomizing chamber 105, the air guide pipe 204 is connected to the air outlet of the refrigeration unit 104, a feed pipe 203 is fixedly connected to the feed port of the centrifugal sprayer 201, the feed pipe 203 passes through the surface of the atomizing chamber 105 and extends to the outside of the atomizing chamber 105, the feed pipe 203 is fixedly connected to the atomizing chamber 105, the atomizing chamber 105 is connected to the air inlet of the separation chamber 205 through a U-shaped tube, and the vibrator 107 is installed on the surface of the separation chamber 205.

[0031] In the embodiment of the present invention, the centrifugal sprayer 201 draws liquid sea cucumber peptide from the container containing the liquid sea cucumber peptide through the feed pipe 203, and sprays the liquid sea cucumber peptide in atomized form. The dry cold airflow entering the separation chamber 205 from the U-shaped tube is mixed with the atomized liquid sea cucumber peptide sprayed from the centrifugal sprayer 201, so that the water in the liquid sea cucumber peptide is sublimated, thereby generating sea cucumber peptide freeze-dried powder and water vapor. The two follow the airflow from the U-shaped tube into the separation chamber 205 in a tangential direction close to the corresponding circumference of the separation chamber 205, and enter the separation chamber 205. The air flow inside the separation chamber 205 flows along the curved inner wall of the separation chamber 205 toward the air outlet of the separation chamber 205. The sea cucumber peptide freeze-dried powder remains inside the separation chamber 205 under the action of centrifugal force and gravity, and water vapor is discharged from the air outlet of the separation chamber 205. The air outlet of the separation chamber 205 can be connected to the air inlet of the first fan 102 through a pipeline to reduce the refrigeration burden of the refrigeration unit 104. At the same time, the filter dryer 103 will filter out water and impurities in the air so as to allow dry cold air to be introduced into the interior of the atomization chamber 105.

[0032] like Figure 2 and Figure 3As shown, a fixed shaft 206 is provided inside the separation chamber 205, and the fixed shaft 206 is rotatably connected to two third circular grooves opened on the surface of the separation chamber 205 through two first bearings. The filter plate 207 is fixedly connected to the surface of the fixed shaft 206 in an annular array, and the filter plate 207 is in contact with the planar inner wall of the separation chamber 205, and the filter plate 207 is not in contact with the curved inner wall of the separation chamber 205.

[0033] In an embodiment of the present invention, when the airflow flows into the interior of the separation chamber 205, the fixed shaft 206 is driven to rotate through the filter plate 207. During this process, the filter plate 207 filters and retains the sea cucumber peptide freeze-dried powder in the airflow, and moves toward the curved inner wall of the separation chamber 205 under the action of gravity. Part of the gas moves from the gap between the filter plate 207 and the curved inner wall of the separation chamber 205 along the curved inner wall of the separation chamber 205 to the air outlet of the separation chamber 205, and the sea cucumber peptide freeze-dried powder gathers at the bottom of the separation chamber 205 under the action of gravity.

[0034] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, a perforated circular plate 209 is fixedly connected to the right pipe opening of the return air pipe 208, and the gas sensor 106 is installed on the surface of the separation chamber 205 near the perforated circular plate 209. A plurality of adjusting blocks 213 are fixedly connected in an annular array on the side of the perforated circular plate 209 away from the separation chamber 205. A rotating block 214 is hinged on the surface of the adjusting block 213. A fan-shaped blocking pad 215 is fixedly connected to the rotating block 214, and the fan-shaped blocking pad 215 is penetrated on the surface of the adjusting block 213. In the rectangular through-groove, a first motor 210 is installed on the surface of the perforated circular plate 209, and a driving gear 211 is fixedly connected to the end of the output shaft of the first motor 210. A driven gear 212 is fixedly connected to the surface of the rotating block 214. The central axis of the driven gear 212 coincides with the rotating axis of the rotating block 214 rotating around the adjusting block 213. The driven gears 212 are meshed and connected with the driving gear 211. A second fan 232 is installed in the left pipe opening of the return air pipe 208.

[0035] In the embodiment of the present invention, when the gas sensor 106 detects that the content of sea cucumber peptide freeze-dried powder in the airflow near the position of the perforated circular plate 209 exceeds the set value, the first motor 210 is controlled to rotate a certain angle, so that the driving gear 211 drives the driven gear 212 to rotate, and the rotation of the driven gear 212 drives the rotating block 214 on the surface of the adjusting block 213 to rotate, and then the rotating block 214 drives the fan-shaped blocking pad 215 to move a certain angle on the surface of the perforated circular plate 209 to change the fan-shaped The blocking rate of the small holes on the surface of the perforated circular plate 209 by the plugging pad 215 is controlled so that the airflow near the position of the perforated circular plate 209 in the separation chamber 205 is returned from the return air pipe 208 to the side of the separation chamber 205 near the air inlet of the separation chamber 205 in a certain proportion, so that the contact time of this part of the gas with the filter plate 207 is prolonged, and the probability of the sea cucumber peptide freeze-dried powder being carried by it colliding with the inner wall of the separation chamber 205 is increased, so as to more effectively separate the sea cucumber peptide freeze-dried powder and water vapor. When all the small holes on the surface of the circular plate 209 are blocked, the second fan 232 does not operate. When the small holes on the surface of the perforated circular plate 209 remain unobstructed, the second fan 232 operates so that the airflow passes from the small holes on the surface of the perforated circular plate 209 through the return air pipe 208 to the area inside the separation chamber 205 near the vent of the separation chamber 205. Sensors can be installed at the air inlet and outlet of the separation chamber 205 respectively. When the wind pressure difference sensed by the two sensors in the separation chamber 205 is greater than the set value, the vibrator 107 is operated. The operation of the vibrator 107 causes the separation chamber 205, the fixed shaft 206 and the filter plate 207 to vibrate, causing the freeze-dried sea cucumber peptide powder attached to the surfaces of the three to fall off, and at the same time, the freeze-dried sea cucumber peptide powder that is blocked in the sieve holes on the surface of the filter plate 207 is cleaned to ensure the separation effect of the filter plate 207 on the freeze-dried sea cucumber peptide powder. After the vibrator 107 has been running for a certain period of time, if the wind pressure difference collected by the two sensors is still greater than the set value, an alarm device outside the device can be triggered to facilitate manual cleaning and maintenance of the device.

[0036] The monitoring method of the gas sensor 106 may specifically include: When the content of the freeze-dried sea cucumber peptide powder discharged from the air outlet of the separation chamber 205 is set to be less than C%, it is qualified. Then the content of the freeze-dried sea cucumber peptide powder detected at the gas sensor 106 should be less than C+X%. The value of X is affected by the filtration efficiency and number of the filter plates 207 and the installation position of the gas sensor 106. The filtration efficiency and number of the filter plates 207 are negatively correlated with the value of X. The closer the installation position of the gas sensor 106 is to the air outlet of the separation chamber 205, the smaller the value of X. When the detection value of the gas sensor 106 is When the measured value is greater than C+X%, the permeability of the small holes on the surface of the perforated circular plate 209 is gradually increased by controlling the rotation of the first motor 210 and energizing the second fan 232. The airflow from the separation chamber 205 is refluxed from the perforated circular plate 209 through the return air pipe 208 until the detection value of the gas sensor 106 is less than C+X%. When the detection value of the gas sensor 106 is less than C+X%, the first motor 210 can be controlled to run to gradually reduce the permeability of the small holes on the surface of the perforated circular plate 209.

[0037] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, two arc grooves 219 are provided on the surface of the adjustment block 213, and the curvature and arc length of the two arc grooves 219 correspond to the two arc sides of the fan-shaped blocking pad 215 respectively. An I-shaped block 220 is arranged inside the arc groove 219, and the I-shaped block 220 is slidably connected to the adjustment block 213 through the arc groove 219, and the I-shaped block 220 is fixedly connected to the fan-shaped blocking pad 215. A spring rope 221 is arranged inside the arc groove 219, and the two ends of the spring rope 221 are fixedly connected to the adjustment block 213 and the I-shaped block 220 respectively.

[0038] In the embodiment of the present invention, the spring rope 221 arranged inside the arc groove 219 enables the fan-shaped blocking pad 215 to move accordingly along the surface of the perforated circular plate 209 in coordination with the rotation of the rotating block 214 when the rotating block 214 rotates in the direction away from the adjusting block 213, and the spring rope 221 keeps the fan-shaped blocking pad 215 in a taut state to prevent the fan-shaped blocking pad 215 from being deformed under the action of airflow, and the I-shaped block 220 slides inside the arc groove 219, so that during the movement of the fan-shaped blocking pad 215, its surface is always in close contact with the perforated circular plate 209 and the adjusting block 213, preventing the sea cucumber peptide freeze-dried powder from entering the gap between the perforated circular plate 209 and the adjusting block 213 or adhering to the surface of the fan-shaped blocking pad 215, thereby affecting the blocking effect of the fan-shaped blocking pad 215 on the small holes on the surface of the perforated circular plate 209.

[0039] like Figure 2 and Figure 4As shown, a material passing trough 226 is provided on the surface of the separation chamber 205 near the bottom, the collecting box 222 is fixedly connected to the surface of the separation chamber 205, the material passing trough 226 is located inside the collecting box 222, a sealing door 223 is hinged on the surface of the collecting box 222, a second motor 225 is installed inside the collecting box 222, and a cross-shaped scraper 224 is fixedly connected to the end of the output shaft of the second motor 225, and the upper surface and the bottom surface of the cross-shaped scraper 224 are in conflict with the inner wall of the collecting box 222.

[0040] In an embodiment of the present invention, the sea cucumber peptide freeze-dried powder accumulated at the bottom of the separation chamber 205 enters the interior of the collection box 222 from the feed trough 226, so that the two plates of the cross-shaped scraper 224 collide with the vertical surface of the inner wall of the collection box 222, so that the interior of the collection box 222 is divided into an area connected to the interior of the feed trough 226 and an area not connected to the feed trough 226. The second motor 225 is controlled to operate so that the second motor 225 drives the cross-shaped scraper 224 to rotate 60 degrees each time and stop for a certain period of time. In this way, when the second motor 225 is not rotating, the sealing door 223 can be opened from the surface of the collection box 222, and the sea cucumber peptide freeze-dried powder in the area not connected to the interior of the feed trough 226 can be taken out from the interior of the collection box 222, so as to reduce the probability of this part of the sea cucumber peptide freeze-dried powder being re-mixed with water vapor under the influence of airflow.

[0041] like Figure 3 As shown, a fixed cylinder 227 is fixedly connected to the surface of the separation chamber 205, an electric push rod 228 is installed inside the fixed cylinder 227, a compression spring 230 is arranged inside the fixed cylinder 227, and a connecting plate 229 and a friction plate 231 are fixedly connected at both ends of the compression spring 230, both connecting plates 229 and friction plates 231 are slidingly connected to the fixed cylinder 227, the friction plate 231 is always in conflict with the fixed shaft 206, and the output shaft of the electric push rod 228 is fixedly connected to the connecting plate 229.

[0042] In the embodiment of the present invention, the extension length of the output shaft of the electric push rod 228 is controlled to control the deformation degree of the compression spring 230 between the connecting plate 229 and the friction plate 231, thereby controlling the squeezing force of the friction plate 231 on the fixed shaft 206, so that the filter plate 207 maintains a certain speed range under the influence of airflow, preventing the filter plate 207 from rotating too fast around the central axis of the fixed shaft 206, causing more sea cucumber peptide freeze-dried powder to be discharged from the air outlet of the separation chamber 205, thereby affecting the separation efficiency of the sea cucumber peptide freeze-dried powder.

[0043] like Fig.10 As shown, support bars 234 are evenly embedded in the interior of the sector-shaped sealing pad 215 , and the central axes of the support bars 234 intersect with the rotation axis of the sector-shaped sealing pad 215 .

[0044] In the embodiment of the present invention, the support bar 234 is provided so that the fan-shaped sealing pad 215 is not easily deformed under the action of airflow, thereby ensuring the sealing effect of the fan-shaped sealing pad 215 on the small holes on the surface of the perforated circular plate 209.

[0045] like Figure 7 and Fig. 9 As shown, a constraint groove 216 is provided on the surface of the rotating block 214, and a T-shaped slider 217 is arranged inside the constraint groove 216. The T-shaped slider 217 is slidably connected to the rotating block 214, and a U-shaped pressure rod 218 is arranged between the rotating block 214 and the adjusting block 213. The U-shaped pressure rod 218 is rotatably connected to the rotating block 214 and the adjusting block 213 through two bearing seats, and the surface of the U-shaped pressure rod 218 is always in contact with the part of the fan-shaped sealing pad 215 located on the surface of the perforated circular plate 209.

[0046] In the embodiment of the present invention, when the rotating block 214 rotates, the U-shaped pressure rod 218 is always in contact with the fan-shaped sealing pad 215, and the T-shaped slider 217 slides inside the constraint groove 216 to complete the rotation of the U-shaped pressure rod 218. Through the pressing of the U-shaped pressure rod 218, the sealing effect of the fan-shaped sealing pad 215 on the small holes on the surface of the perforated circular plate 209 is further guaranteed.

[0047] A low-temperature drying method for preparing sea cucumber peptides comprises the following steps: Step 1, inserting the feed pipe 203 into the purified liquid-phase sea cucumber peptide container, starting the centrifugal sprayer 201, and allowing the cold air flow blown into the atomizing chamber 105 to perform low-temperature drying on the atomized liquid-phase sea cucumber peptide; Step 2: The airflow entering the atomization chamber 105 carries sublimated water vapor and sea cucumber peptide freeze-dried powder through a U-shaped elbow and enters the separation chamber 205. A portion of the sea cucumber peptide freeze-dried powder hits the inner wall of the separation chamber 205 under the action of centrifugal force and gravity, thereby gathering to the bottom of the separation chamber 205. A portion of the sea cucumber peptide freeze-dried powder is intercepted by the filter plate 207 and gathers to the bottom of the separation chamber 205 under the action of gravity. The water vapor is discharged from the air outlet of the separation chamber 205. Step three, when the content of sea cucumber peptide freeze-dried powder in the airflow at the gas sensor 106 exceeds the set value, the second fan 232 and the first motor 210 are started. The operation of the first motor 210 causes the rotating block 214 to rotate around the adjusting block 213, and drives the fan-shaped blocking pad 215 to move on the surface of the perforated circular plate 209 to change the permeability of the small holes on the surface of the perforated circular plate 209. The operation of the second fan 232 causes the airflow to return from the small holes on the surface of the perforated circular plate 209 through the return air pipe 208 to the inside of the separation chamber 205 near the air inlet of the separation chamber 205, thereby increasing the separation efficiency of the sea cucumber peptide freeze-dried powder of the reflux airflow; Step 4: regularly take out the sea cucumber peptide freeze-dried powder from the collection box 222 to reduce the probability of the sea cucumber peptide freeze-dried powder being mixed with water vapor again.

[0048] It should be noted that: the air outlet of the first fan 102 is connected to the air inlet of the filter dryer 103 through a pipeline, the air outlet of the filter dryer 103 is connected to the air inlet of the refrigeration unit 104 through a pipeline, the air outlet of the refrigeration unit 104 is connected to the inside of the air guide pipe 204, and the working principle and use process of the first fan 102, the filter dryer 103, the refrigeration unit 104, the atomization chamber 105, the gas sensor 106 and the vibrator 107 are well known in the prior art and will not be described in detail here; The connection method of the pipeline in the present application is to fix the pipeline on the surface of the component to open a reserved groove, or the pipeline passes through the reserved groove on the surface of the component and extends to the inside or outside of the component, or the pipeline is connected to the corresponding component by providing a threaded wire and a corresponding threaded groove. This is well known in the prior art and will not be described in detail. The feed pipe 203 can be inserted into a container containing liquid-phase sea cucumber peptides to feed the centrifugal sprayer 201; The separation chamber 205 is a hollow cylindrical shape, and pipes are fixed in the openings symmetrically opened on its surface. The pipe opening on the left is the air inlet, and the other pipe opening is the air outlet, so that the gas can move along the curved inner wall of the separation chamber 205. The adjusting block 213 is composed of a rectangular portion and an arc portion. A rectangular through-groove is provided on the surface of the rectangular portion to facilitate the insertion of the fan-shaped plugging pad 215. The arc portion is used for the sliding of the I-shaped block 220. The portion of the rectangular portion located below the rectangular through-groove is fixedly connected to the perforated circular plate 209, and the portion of the rectangular portion located above the rectangular through-groove does not contact the perforated circular plate 209, so that the rotating block 214 drives the fan-shaped plugging pad 215 to slide on the surface of the perforated circular plate 209. At the same time, the portion of the rectangular portion located above the rectangular through-groove makes the fan-shaped plugging pad 215 fit closely with the perforated circular plate 209, so as to ensure that the fan-shaped plugging pad 215 has a better plugging effect on the perforated circular plate 209. The support strip 234 and the fan-shaped blocking pad 215 are both made of flexible materials. The texture of the support strip 234 is more rigid than that of the fan-shaped blocking pad 215, so that as the rotating block 214 rotates, the fan-shaped blocking pad 215 covers along the surface of the perforated circular plate 209. At the same time, the support strip 234 is more rigid than the fan-shaped blocking pad 215, so that the fan-shaped blocking pad 215 as a whole has a stronger resistance to the airflow passing through the perforated circular plate 209, so that the part of the fan-shaped blocking pad 215 that is attached to the surface of the perforated circular plate 209 is not easily blown by the airflow; The spring rope 221 inside the arc groove 219 is always in a stretched state, and the two spring ropes 221 are of different lengths, so that when the fan-shaped blocking pad 215 moves with the rotating block 214, the elastic potential energy of the two spring ropes 221 causes the I-shaped block 220 to drive the fan-shaped blocking pad 215 to always have a tendency to move away from the adjusting block 213, so that the adjusting block 213 is close to the surface of the adjusting block 213; The I-shaped block 220 is in an I-shaped shape, which facilitates its fixation with the fan-shaped blocking pad 215 and also facilitates its sliding along the extending direction of the arc groove 219; The installation and use of the sensor inside the separation chamber 205 and the external alarm device are well known in the prior art and will not be described in detail here; The installation position of the gas sensor 106 is set above the feed slot 226 to reduce the influence of the aggregated sea cucumber peptide freeze-dried powder on the detection of the gas sensor 106; Small holes are evenly opened on the surface of the perforated circular plate 209 and the flow equalizing plate 202 to facilitate the airflow to pass through the perforated circular plate 209 and the flow equalizing plate 202. The flow equalizing plate 202 allows the airflow to be blown more evenly toward the atomized liquid sea cucumber peptide after passing through the flow equalizing plate 202.

[0049] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A low-temperature drying device for preparing sea cucumber peptides, comprising a fixed frame (101), on the surface of which a first fan (102), a filter dryer (103), a refrigeration unit (104), and an atomization chamber (105) are sequentially installed from left to right, and a gas sensor (106) and a vibrator (107) are arranged on the right side of the fixed frame (101), characterized in that: include: A centrifugal sprayer (201) is arranged inside the atomization chamber (105) for atomizing the purified liquid-phase sea cucumber peptide, so that the dry cold air blown into the atomization chamber (105) from the refrigeration unit (104) dries the liquid-phase sea cucumber peptide; A separation chamber (205) is provided on the right side of the atomization chamber (105) for separating the sea cucumber peptide freeze-dried powder from the airflow blown from the atomization chamber (105) into the separation chamber (205); A plurality of filter plates (207) are arranged in a circular array inside the separation chamber (205) to improve the filtering efficiency of the separation chamber (205) for the sea cucumber peptide freeze-dried powder; The surface of the separation chamber (205) is provided with an air return pipe (208), and the two ends of the air return pipe (208) are respectively located in first circular grooves symmetrically opened on the surface of the separation chamber (205), and the air return pipe (208) is used to further improve the filtering efficiency of the filter plate (207) on the sea cucumber peptide freeze-dried powder; A circular plate with holes (209) is arranged inside the return air pipe (208), and a plurality of fan-shaped sealing pads (215) are arranged in a ring array on the surface of the circular plate with holes (209), and the small holes on the surface of the circular plate with holes (209) are sealed by the fan-shaped sealing pads (215) to control the reflux ratio of the airflow inside the separation chamber (205); A collecting box (222) is provided at the bottom of the separation chamber (205) so that the separated sea cucumber peptide freeze-dried powder can be taken out from the inside of the device in a timely manner, thereby reducing the probability of the sea cucumber peptide freeze-dried powder mixing with water vapor again.

2. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 1, characterized in that: A flow equalizing plate (202) is fixedly connected inside the atomizing chamber (105), a centrifugal sprayer (201) is installed in a mounting groove provided on the surface of the flow equalizing plate (202), an air guide pipe (204) is fixedly connected in a second circular groove provided on the surface of the atomizing chamber (105), the air guide pipe (204) is connected to an air outlet of the refrigeration unit (104), a feed pipe (203) is fixedly connected in a feed inlet of the centrifugal sprayer (201), the feed pipe (203) passes through the surface of the atomizing chamber (105) and extends to the outside of the atomizing chamber (105), the feed pipe (203) is fixedly connected to the atomizing chamber (105), the atomizing chamber (105) is connected to an air inlet of the separation chamber (205) via a U-shaped pipe, and the vibrator (107) is installed on the surface of the separation chamber (205).

3. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 2, characterized in that: A fixed shaft (206) is arranged inside the separation chamber (205); the fixed shaft (206) is rotatably connected to two third circular grooves provided on the surface of the separation chamber (205) via two first bearings; the filter plates (207) are fixedly connected to the surface of the fixed shaft (206) in an annular array; the filter plates (207) are in contact with the planar inner wall of the separation chamber (205), and the filter plates (207) are not in contact with the curved inner wall of the separation chamber (205).

4. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 3, characterized in that: A circular plate with a hole (209) is fixedly connected to the right pipe opening of the return air pipe (208); the gas sensor (106) is installed on the surface of the separation chamber (205) near the circular plate with a hole (209); a surface of the circular plate with a hole (209) away from the separation chamber (205) is fixedly connected to a plurality of adjustment blocks (213) in a circular array; a rotating block (214) is hingedly connected to the surface of the adjustment block (213); the fan-shaped sealing pad (215) is fixedly connected to the rotating block (214), and the fan-shaped sealing pad (215) is penetrated on the surface of the adjustment block (213). A first motor (210) is installed on the surface of the perforated circular plate (209) in the rectangular through-groove, a driving gear (211) is fixedly connected to the end of the output shaft of the first motor (210), a driven gear (212) is fixedly connected to the surface of the rotating block (214), a central axis of the driven gear (212) coincides with a rotating axis of the rotating block (214) rotating around the adjusting block (213), the driven gears (212) are meshedly connected to the driving gear (211), and a second fan (232) is installed in the left pipe opening of the return air pipe (208).

5. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 4, characterized in that: The surface of the adjustment block (213) is provided with two arcuate grooves (219), the arc angles and arc lengths of the two arcuate grooves (219) respectively correspond to the two arcuate sides of the fan-shaped blocking pad (215), an I-shaped block (220) is arranged inside the arcuate grooves (219), the I-shaped block (220) is slidably connected to the adjustment block (213) through the arcuate grooves (219), the I-shaped block (220) is fixedly connected to the fan-shaped blocking pad (215), and a spring rope (221) is arranged inside the arcuate grooves (219), the two ends of the spring rope (221) are respectively fixedly connected to the adjustment block (213) and the I-shaped block (220).

6. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 5, characterized in that: A material passing trough (226) is provided on the surface of the separation chamber (205) near the bottom, the collection box (222) is fixedly connected to the surface of the separation chamber (205), the material passing trough (226) is located inside the collection box (222), a sealing door (223) is hingedly connected to the surface of the collection box (222), a second motor (225) is installed inside the collection box (222), a cross-shaped scraper (224) is fixedly connected to the end of the output shaft of the second motor (225), and the upper surface and the bottom surface of the cross-shaped scraper (224) are in contact with the inner wall of the collection box (222).

7. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 6, characterized in that: A fixed cylinder (227) is fixedly connected to the surface of the separation chamber (205), an electric push rod (228) is installed inside the fixed cylinder (227), a compression spring (230) is arranged inside the fixed cylinder (227), and a connecting plate (229) and a friction plate (231) are fixedly connected to both ends of the compression spring (230), the connecting plate (229) and the friction plate (231) are both slidably connected to the fixed cylinder (227), the friction plate (231) is always in conflict with the fixed shaft (206), and the output shaft of the electric push rod (228) is fixedly connected to the connecting plate (229).

8. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 7, characterized in that: Support bars (234) are evenly embedded in the interior of the sector-shaped sealing pad (215), and the central axes of the support bars (234) intersect with the rotation axis of the sector-shaped sealing pad (215).

9. The low-temperature drying equipment for preparing sea cucumber peptide according to claim 8, characterized in that: A restraining groove (216) is provided on the surface of the rotating block (214), a T-shaped slider (217) is provided inside the restraining groove (216), the T-shaped slider (217) is slidably connected to the rotating block (214), a U-shaped pressure rod (218) is provided between the rotating block (214) and the adjusting block (213), the U-shaped pressure rod (218) is rotatably connected to the rotating block (214) and the adjusting block (213) via two bearing seats, and the surface of the U-shaped pressure rod (218) is always in contact with the part of the sector-shaped sealing pad (215) located on the surface of the perforated circular plate (209).

10. A low-temperature drying method for preparing sea cucumber peptides, applied to the device as claimed in any one of claims 1 to 9, characterized in that: The steps include: Step 1, inserting the feed pipe (203) into the purified liquid-phase sea cucumber peptide container, starting the centrifugal sprayer (201), and allowing the cold air flow blown into the atomization chamber (105) to perform low-temperature drying on the atomized liquid-phase sea cucumber peptide; Step 2, the airflow entering the atomization chamber (105) carries sublimated water vapor and sea cucumber peptide freeze-dried powder through a U-shaped elbow and enters the separation chamber (205), a portion of the sea cucumber peptide freeze-dried powder hits the inner wall of the separation chamber (205) under the action of centrifugal force and gravity, and gathers at the bottom of the separation chamber (205), and a portion of the sea cucumber peptide freeze-dried powder is intercepted by the filter plate (207) and gathers at the bottom of the separation chamber (205) under the action of gravity, and the water vapor is discharged from the device through the air outlet of the separation chamber (205); Step three, when the content of sea cucumber peptide freeze-dried powder in the airflow at the gas sensor (106) exceeds the set value, the second fan (232) and the first motor (210) are started. The operation of the first motor (210) causes the rotating block (214) to rotate around the adjusting block (213), and drives the fan-shaped blocking pad (215) to move on the surface of the perforated circular plate (209) to change the permeability of the small holes on the surface of the perforated circular plate (209). The operation of the second fan (232) causes the airflow to return from the small holes on the surface of the perforated circular plate (209) through the return air pipe (208) to the inside of the separation chamber (205) near the air inlet of the separation chamber (205), thereby increasing the separation efficiency of the sea cucumber peptide freeze-dried powder in the reflux airflow; Step 4: regularly taking out the sea cucumber peptide freeze-dried powder from the inside of the collection box (222) to reduce the probability of the sea cucumber peptide freeze-dried powder being re-mixed with water vapor.

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