A spray dryer and drying method for maple leaf extract

Abstract

The present invention relates to the field of drying technology, and in particular to a spray dryer and drying method for maple leaf extract, comprising a machine body, a spray pipe fixedly penetrated through one side surface of the machine body, a discharge portion arranged on the lower end surface of the machine body, a top cover fixedly installed on the upper end of the machine body, an air inlet pipe fixedly inserted on the upper surface of the top cover, a fixed cover fixedly installed at the upper end of the inner wall of the machine body, a curved top fixedly connected to the lower surface of the fixed cover, an arc-shaped shell fixedly connected to one side of the lower side of the curved top, a guide path fixedly installed on the inner wall of the machine body and close to the lower end of the curved shell, a baffle fixedly connected between the two ends of the guide path and the lower end corner of the curved top. The present invention has the technical effect of making the spray fully contact with the hot air, thereby improving the drying effect; has the function of assisting the powder to be shaken off, thereby effectively reducing the number of maintenance times; can release the larger particles accumulated on the inner side, thereby achieving the effect of cleaning, and is convenient for maintenance.

Description

Technical Field

[0001] The invention relates to the field of drying technology, in particular to a spray dryer and a drying method for maple leaf extract. Background Art

[0002] The leaves of Acer truncatum are rich in bioactive ingredients such as flavonoids and chlorogenic acid. They also contain superoxide dismutase, vitamin E, catechins, selenium and other ingredients, and have high development and utilization value.

[0003] In the process of extracting the effective ingredients, maple leaves are collected, dried naturally, and crushed into tiny particles. The crushed main raw material enters the reactor, and the material-water ratio is 1:8 and heated to 93 degrees. The heating time is generally 40 minutes, which is flexibly controlled according to the color of the liquid, generally brown-yellow. After that, the auxiliary material is extracted separately, and the extraction time is 50 minutes. Then the auxiliary material and the main material are mixed and stirred for 10 minutes, and then transported to the press to separate the solid and liquid. The pressing uses a 200-mesh two-layer filter cloth. The separated liquid is transported to a high-speed centrifuge for purification to remove tiny particles. The purified liquid is transported to a concentrator for concentration, and the solid content reaches 2%. It is then sent to a spray dryer by a milk pump for drying to obtain a powdered finished product.

[0004] The existing dryer uses continuous air supply from the air inlet, and the internal air flows in a straight line. The contact time and contact degree with the spray are limited, resulting in heat waste, insufficient drying and other problems. Therefore, we proposed a spray dryer and drying method for maple leaf extract. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a spray dryer and a drying method for maple leaf extract.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a spray dryer for maple leaf extract, including a body, a spray pipe fixedly penetrated through one side surface of the body, a discharge portion arranged on the lower end surface of the body, a top cover fixedly installed on the upper end of the body, an air inlet pipe fixedly inserted on the upper surface of the top cover, a fixed cover fixedly installed at the upper end of the inner wall of the body, a curved top fixedly connected to the lower surface of the fixed cover, an arc-shaped shell fixedly connected to one side of the lower side of the curved top, a guide path fixedly installed on the inner wall of the body and close to the lower end of the curved shell, baffles fixedly connected between the two ends of the guide path and the lower end corners of the curved top, a recessed portion is provided on the upper surface of the fixed cover and corresponding to the lower end of the air inlet pipe, an insert is slidably inserted into the inner surface of the recessed portion through an elastic mechanism, and a contact plate is fixedly connected to the upper end of the insert.

[0007] Preferably, the discharge portion comprises a base fixedly mounted on the lower end surface of the body, and a discharge pipe is fixedly embedded on the lower end surface of the body and close to the inner side of the base.

[0008] Preferably, a protective cover is provided on the outer side of the top cover, a plurality of mounting rods are fixedly passed through the upper surface of the protective cover, and the lower ends of the mounting rods are fixedly connected to the upper surface of the top cover.

[0009] Preferably, the elastic mechanism includes a fixing seat fixedly mounted on the inner bottom surface of the fixing cover, a plurality of second T-shaped columns are fixedly connected to the upper surface of the fixing seat, a fixing plate is fixedly connected to the outer surface of the insert, the second T-shaped column slides through the outer surface of the fixing plate, a second compression spring is sleeved on the outer surface of the second T-shaped column, and the second compression spring is located on the upper surface of the fixing seat.

[0010] Preferably, a contact block is fixedly connected to the lower end of the insert.

[0011] Preferably, a curved strip is slidably embedded in the lower surface of the guide path, and a moving mechanism is provided on the lower surface of the curved strip.

[0012] Preferably, the moving mechanism includes a sliding opening extending through the side surface of the machine body, a lifting plate is slidably inserted into the inner side of the sliding opening through a reset mechanism, a plurality of L-shaped brackets are fixedly connected to the upper surface of the lifting plate and located at the inner side of the machine body, the upper end of the L-shaped bracket is fixedly connected to the lower surface of the arc-shaped bar, and a handle is fixedly connected to the upper surface of the lifting plate and located at the outer side of the machine body.

[0013] Preferably, the reset mechanism includes a connecting plate fixedly connected to the lower edge of the sliding port, a first T-shaped column slidingly passed through the upper surface of the connecting plate, an upper end of the first T-shaped column fixedly connected to the lower surface of the lifting plate, an outer surface of the first T-shaped column is sleeved with a first compression spring, and the first compression spring is located between the lifting plate and the connecting plate, the upper and lower surfaces of the lifting plate are respectively fixedly connected with sealing plates, and the sealing plates slide against the inner wall of the machine body.

[0014] A method for drying maple leaf extract, using the above-mentioned spray dryer, comprises the following steps:

[0015] S1, using a breast pump to deliver the concentrated and purified liquid into the inner side of the machine body through the spray tube, and delivering hot air into the inner side of the machine body through the air inlet pipe;

[0016] S2, discharging the powder mixed with air through the discharge part;

[0017] S3, cyclone separation is performed on the exhausted air and powder to obtain a dry powder product.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention has the technical effect of making the spray fully contact with the hot air, thereby improving the drying effect;

[0020] The present invention has the function of assisting powder shaking off, which effectively reduces the number of maintenance times;

[0021] The invention can release the larger particles accumulated inside, so as to achieve the cleaning effect and facilitate maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a spray dryer for maple leaf extract according to the present invention;

[0023] Figure 2 is a cross-sectional view of a spray dryer for maple leaf extract according to the present invention;

[0024] Figure 3 A spray dryer for maple leaf extract of the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 A spray dryer for maple leaf extract of the present invention Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 It is a schematic diagram of a fixed cover of a spray dryer for maple leaf extract of the present invention;

[0027] Figure 6 It is a schematic diagram of the curved top of a spray dryer for maple leaf extract of the present invention;

[0028] Figure 7 The present invention is a schematic diagram of an arc strip of a spray dryer for maple leaf extract.

[0029] 1. Machine body; 2. Arc shell; 3. Curved top; 4. Fixed cover; 5. Guide channel; 6. Baffle; 7. Arc strip; 8. L-shaped bracket; 9. Lifting plate; 10. Handle; 11. Slide; 12. Closing plate; 13. Connecting plate; 14. First T-shaped column; 15. First compression spring; 16. Recessed part; 17. Contact plate; 18. Insert strip; 19. Fixed plate; 20. Contact block; 21. Fixed seat; 22. Second T-shaped column; 23. Second compression spring; 24. Air inlet pipe; 26. Spray pipe; 27. Exhaust pipe; 28. Base; 29. ​​Top cover; 30. Protective cover; 31. Mounting rod. DETAILED DESCRIPTION

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0031] like Figure 1-Figure 7A spray dryer for maple leaf extract shown in the figure comprises a body 1, a spray pipe 26 is fixedly penetrated through one side surface of the body 1, a discharge portion is arranged on the lower end surface of the body 1, a top cover 29 is fixedly mounted on the upper end of the body 1, an air inlet pipe 24 is fixedly inserted on the upper surface of the top cover 29, a fixed cover 4 is fixedly mounted on the upper end of the inner wall of the body 1, a curved top 3 is fixedly connected to the lower surface of the fixed cover 4, an arc-shaped shell 2 is fixedly connected to one side of the lower side of the curved top 3, a guide path 5 is fixedly mounted on the inner wall of the body 1 and near the lower end of the curved shell 2, baffles 6 are fixedly connected between the two ends of the guide path 5 and the lower end corners of the curved top 3, a recessed portion 16 is provided on the upper surface of the fixed cover 4 and corresponding to the lower end of the air inlet pipe 24, an insert 18 is slidably inserted on the inner surface of the recessed portion 16 through an elastic mechanism, and a contact plate 17 is fixedly connected to the upper end of the insert 18.

[0032] The discharge part includes a base 28 fixedly mounted on the lower end surface of the machine body 1, and a discharge pipe 27 is fixedly embedded on the lower end surface of the machine body 1 and close to the inner side of the base 28. According to the conventional use method in the prior art, the discharge pipe 27 is connected to the cyclone dust collector through a pipeline to filter out the powder in the hot air.

[0033] A protective cover 30 is provided on the outside of the top cover 29, and a plurality of mounting rods 31 are fixedly passed through the upper surface of the protective cover 30, and the lower ends of the mounting rods 31 are fixedly connected to the upper surface of the top cover 29. The protective cover 30 plays a protective role to prevent the top cover 29 from being overheated and causing danger.

[0034] The elastic mechanism includes a fixing seat 21 fixedly mounted on the inner bottom surface of the fixing cover 4, a plurality of second T-shaped columns 22 are fixedly connected to the upper surface of the fixing seat 21, a fixing plate 19 is fixedly connected to the outer surface of the insert 18, the second T-shaped column 22 slides through the outer surface of the fixing plate 19, a second compression spring 23 is sleeved on the outer surface of the second T-shaped column 22, and the second compression spring 23 is located on the upper surface of the fixing seat 21. The fixing plate 19 moves downward to squeeze the second compression spring 23, and when the wind force on the contact plate 17 decreases, the second compression spring 23 will reset.

[0035] The lower end of the insert strip 18 is fixedly connected with a contact block 20. The contact block 20 can be made of hard rubber material to effectively prevent the upper surface of the curved top 3 from being damaged during collision.

[0036] The lower surface of the guide path 5 is slidably embedded with an arc strip 7, and a moving mechanism is provided on the lower surface of the arc strip 7. The arc strip 7 can be moved downward by the moving mechanism, so that the powder on the surface of the guide path 5 falls off.

[0037] The moving mechanism includes a sliding opening 11 penetrating through the side surface of the body 1, and a lifting plate 9 is slidably inserted into the inner side of the sliding opening 11 through a reset mechanism, and a plurality of L-shaped brackets 8 are fixedly connected to the upper surface of the lifting plate 9 and located at the inner side of the body 1, and the upper end of the L-shaped bracket 8 is fixedly connected to the lower surface of the arc strip 7, and a handle 10 is fixedly connected to the upper surface of the lifting plate 9 and located at the outer side of the body 1. The handle 10 facilitates the user to move the lifting plate 9 downward, thereby controlling the downward movement of the arc strip 7.

[0038] The reset mechanism includes a connecting plate 13 fixedly connected to the lower edge of the sliding port 11, a first T-shaped column 14 slidingly passed through the upper surface of the connecting plate 13, the upper end of the first T-shaped column 14 fixedly connected to the lower surface of the lifting plate 9, a first compression spring 15 sleeved on the outer surface of the first T-shaped column 14, and the first compression spring 15 is located between the lifting plate 9 and the connecting plate 13, and the upper and lower surfaces of the lifting plate 9 are respectively fixedly connected with a sealing plate 12, and the sealing plate 12 slides against the inner wall of the body 1. After pressing down the lifting plate 9, when you let go, the first compression spring 15 makes the lifting plate 9 move up and reset, and during the up and down movement, the sealing plate 12 will always cover the inner port of the sliding port 11 to prevent the powder inside the body 1 from overflowing.

[0039] A drying method for maple leaf extract, using the above-mentioned spray dryer, comprises the following steps:

[0040] S1, using a breast pump to deliver the concentrated and purified liquid into the inner side of the body 1 through the spray pipe 26, and delivering hot air into the inner side of the body 1 through the air inlet pipe 24;

[0041] S2, discharging the powder mixed with air through the discharge part;

[0042] S3, cyclone separation is performed on the exhausted air and powder to obtain a dry powder product.

[0043] During the drying process, the concentrated liquid is sprayed out through the spray pipe 26 to form a spray. After the hot air enters the inner side of the machine body 1 through the air inlet pipe 24, it follows the side of the fixed cover 4, passes through the curved top 3 and the arc shell 2, and continues to flow downward. It is guided by the guide channel 5 and flows upward, and then flows along the lower surface of the curved top 3 to form a downward turning airflow. When the hot air contacts the lower surface of the curved top 3, a certain turbulence is formed. The relatively chaotic airflow contacts the spray and also assists in the turning of the particles in the spray, thereby achieving a sufficient drying effect. After the spray falls, it is discharged through the exhaust pipe 27. At the same time, due to the continuous entry of hot air, the internal air will be discharged along the exhaust pipe 27, and then the particles in the air will be obtained through the cyclone separator. Therefore, it has the technical effect of making the spray and the hot air fully contact, thereby improving the drying effect.

[0044] During the process of hot air entering, since the flow of hot air entering is not stable, it will exert unstable pressure on the contact plate 17. When the pressure is large, the contact plate 17 will be pressed down, and the fixed plate 19 will move down to squeeze the second compression spring 23. The contact block 20 will hit the upper surface of the curved top 3 to achieve a knocking effect, thereby helping the powder adhered to the lower surface of the curved top 3 to fall off. It has the function of helping the powder to fall off, effectively reducing the number of maintenance times.

[0045] During the hot air blowing process, when the hot air passes through the upper surface of the guide path 5, the powder on the surface will be blown, so most of the powder will not accumulate on the surface. During regular maintenance, the handle 10 is pressed down to move the lifting plate 9 downward, squeezing the first compression spring 15, and the L-shaped bracket 8 drives the arc bar 7 to move downward, so that an opening appears on the lower surface of the guide path 5, and then the accumulated larger particles can be released, thereby achieving the purpose of cleaning and facilitating maintenance.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A spray dryer for maple leaf extract, comprising a body (1), characterized in that: A spray tube (26) is fixedly inserted through one side surface of the machine body (1), a discharge portion is provided on the lower end surface of the machine body (1), a top cover (29) is fixedly mounted on the upper end of the machine body (1), an air inlet pipe (24) is fixedly inserted on the upper surface of the top cover (29), a fixed cover (4) is fixedly mounted on the upper end of the inner wall of the machine body (1), a curved top (3) is fixedly connected to the lower surface of the fixed cover (4), a curved shell (2) is fixedly connected to the lower side of the curved top (3), and the machine body (1) is provided with a plurality of nozzles. A guide path (5) is fixedly installed on the inner wall of the body (1) and near the lower end of the arc-shaped shell (2); baffles (6) are fixedly connected between the two ends of the guide path (5) and the lower corners of the curved top (3); a recessed portion (16) is provided on the upper surface of the fixed cover (4) and corresponding to the lower end of the air inlet pipe (24); an inserting strip (18) is slidably inserted into the inner surface of the recessed portion (16) through an elastic mechanism; and a contact plate (17) is fixedly connected to the upper end of the inserting strip (18); The elastic mechanism comprises a fixing seat (21) fixedly mounted on the inner bottom surface of the fixing cover (4); a plurality of second T-shaped columns (22) are fixedly connected to the upper surface of the fixing seat (21); a fixing plate (19) is fixedly connected to the outer surface of the insert (18); the second T-shaped columns (22) slide through the outer surface of the fixing plate (19); a second compression spring (23) is sleeved on the outer surface of the second T-shaped columns (22); and the second compression spring (23) is located on the upper surface of the fixing seat (21); The lower end of the insert strip (18) is fixedly connected to a contact block (20); When hot air enters, an unstable pressure is applied to the contact plate (17). When the pressure is high, the contact plate (17) is pressed downward, the fixed plate (19) moves downward to squeeze the second compression spring (23), and the contact block (20) hits the upper surface of the curved top (3). When the wind force on the contact plate (17) decreases, the second compression spring (23) is reset.

2. A spray dryer for maple leaf extract according to claim 1, characterized in that: The discharge portion comprises a base (28) fixedly mounted on the lower end surface of the machine body (1), and a discharge pipe (27) is fixedly embedded on the lower end surface of the machine body (1) and close to the inner side of the base (28).

3. A spray dryer for maple leaf extract according to claim 1, characterized in that: A protective cover (30) is arranged on the outside of the top cover (29), a plurality of mounting rods (31) are fixedly passed through the upper surface of the protective cover (30), and the lower ends of the mounting rods (31) are fixedly connected to the upper surface of the top cover (29).

4. A spray dryer for maple leaf extract according to claim 1, characterized in that: An arc-shaped strip (7) is slidably embedded on the lower surface of the guide path (5), and a moving mechanism is provided on the lower surface of the arc-shaped strip (7).

5. A spray dryer for maple leaf extract according to claim 4, characterized in that: The moving mechanism comprises a sliding opening (11) extending through a side surface of the machine body (1); a lifting plate (9) is slidably inserted into the inner side of the sliding opening (11) via a reset mechanism; a plurality of L-shaped brackets (8) are fixedly connected to the upper surface of the lifting plate (9) and located at the inner side of the machine body (1); the upper ends of the L-shaped brackets (8) are fixedly connected to the lower surface of the arc-shaped strip (7); and a handle (10) is fixedly connected to the upper surface of the lifting plate (9) and located at the outer side of the machine body (1).

6. A spray dryer for maple leaf extract according to claim 5, characterized in that: The reset mechanism comprises a connecting plate (13) fixedly connected to the lower edge of the sliding opening (11); a first T-shaped column (14) slides through the upper surface of the connecting plate (13); the upper end of the first T-shaped column (14) is fixedly connected to the lower surface of the lifting plate (9); a first compression spring (15) is sleeved on the outer surface of the first T-shaped column (14); and the first compression spring (15) is located between the lifting plate (9) and the connecting plate (13); the upper and lower surfaces of the lifting plate (9) are respectively fixedly connected to sealing plates (12), and the sealing plates (12) are slidably attached to the inner wall of the machine body (1).

7. A method for drying maple leaf extract, using the spray dryer according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, using a breast pump to deliver the concentrated and purified liquid into the inner side of the machine body (1) through the spray pipe (26), and delivering hot air into the inner side of the machine body (1) through the air inlet pipe (24); S2, discharging the powder mixed with air through the discharge part; S3, cyclone separation is performed on the exhausted air and powder to obtain a dry powder product.

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