Powder drying device for pea protein production

Abstract

The invention discloses a powder drying device for pea protein production, and relates to the field of drying equipment.The powder drying device comprises a drying box, a drying cavity and a collecting cavity, the drying cavity and the collecting cavity are formed in the drying box, and an air heater for feeding hot air to the bottom of the drying cavity is arranged at the bottom of the drying box; an auger conveying pipe for conveying powder into the drying cavity is arranged on the side face of the drying box. A transfer box is fixedly installed on the side face of the drying box, the top of the transfer box communicates with the auger conveying pipe, and a cylindrical groove is formed in the transfer box. According to the powder drying device for pea protein production, through the synergistic effect of a transfer box, a striking rod and a discharge arc plate, pea powder can be efficiently scattered in the conveying process, hot air flowing through a discharging opening can be guided and blocked under the cooperative effect of flow guide covers, and the powder drying effect is improved. And the materials cannot reversely flow into the transfer box from the discharge port, so that the drying work can be continuously carried out.

Description

Technical Field

[0001] The invention relates to drying equipment technology, and in particular to a powder drying device for pea protein production. Background Art

[0002] Peas are a common legume crop. They have high nutritional value and a high content of plant protein. They are also rich in mineral elements and vitamins. Pea protein is a good source of essential amino acids with a relatively balanced composition. Therefore, peas are widely processed into various food products.

[0003] After pea products are processed into powder, since there is still moisture inside the powder, drying equipment is needed to dry the powder. Commonly used drying equipment includes drum drying equipment, which has a large single processing capacity, but has problems such as low thermal efficiency and uneven drying. In addition, it cannot continuously dry the powder produced by pea protein, so its drying efficiency needs to be improved.

[0004] A Chinese invention patent with publication number CN118999111A discloses a powder drying device for pea protein production, including a machine body and a collecting box. A longitudinally distributed main cavity is provided in the machine body, and a transversely distributed feeding cavity and a transverse sliding cavity are provided on the inner wall of the main cavity. A segmented feeding assembly and an auger pipe for connecting the feeding cavity are provided on one side of the machine body, and the output end of the auger pipe is connected to the segmented feeding assembly. A jet slider for ejecting heated air is slidably connected to the inside of the transverse sliding cavity. A cylinder for controlling the transverse sliding of the jet slider and a first air pump for pumping air into the jet slider are provided on the other side of the machine body. By dividing the main cavity into upper and lower parts, when the jet slider is extended, the powder dispersed in the upper space can be directly blown away. When the jet slider is retracted, the agglomerated powder in the upper space will fall into the lower space and be crushed, thereby realizing efficient dispersion and drying of the agglomerated powder. However, in actual application, intermittent feeding through the segmented feeding assembly not only increases the complexity of the operation, but also requires waiting until the powder in the dragon tube fully enters the conical storage tank before the next operation can be carried out, which limits the production efficiency to a certain extent. Therefore, the present invention provides a powder drying device for pea protein production, aiming to solve the above problems and improve the drying efficiency. Summary of the invention

[0005] The object of the present invention is to provide a powder drying device for pea protein production to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a powder drying device for pea protein production, comprising a drying box and a drying chamber and a collecting chamber opened inside the drying box, a hot air blower for sending hot air to the bottom of the drying chamber is arranged at the bottom of the drying box, and an auger conveying pipe for conveying powder to the inside of the drying chamber is arranged on the side of the drying box; A transfer box is fixedly installed on the side of the drying box, the top of the transfer box is connected with the auger conveying pipe, a cylindrical groove is opened inside the transfer box, a discharge port connected to the drying chamber is opened at the bottom of the side of the cylindrical groove, the inner side surface of the cylindrical groove is rotatably connected with a rotating shaft, a plurality of discharge arc plates are arranged at the bottom of the outer side surface of the rotating shaft, a plurality of striking rods are arranged outside the rotating shaft, all the striking rods are arranged equidistantly in a spiral shape from top to bottom, a guide cover corresponding to the discharge port is fixedly installed on the inner wall of the drying chamber, and the top position of the guide cover is higher than the top position of the discharge port.

[0007] Furthermore, the size specifications of the discharge arc plate are compatible with the cylindrical trough, the rotating shaft is driven by a motor, and when the motor drives the rotating shaft to rotate, the discharge arc plate pushes the powder at the bottom of the cylindrical trough out from the discharge port.

[0008] Furthermore, a flow guide slope is arranged on the side of the flow guide cover away from the discharge port, and the side of the flow guide slope away from the discharge port is inclined upward.

[0009] Furthermore, the upper surface of the guide slope is provided with a plurality of rows of striking blades equidistantly along its inclination direction, the striking blades in each row are equidistantly arranged, and the striking blades in two adjacent rows are staggered.

[0010] Furthermore, a striking plate corresponding to the guide slope is fixedly installed on the inner side of the drying chamber. After the discharge arc plate pushes the powder to flow along the guide slope and separates, the powder collides with the surface of the striking plate during the rising process of the hot air flow.

[0011] Furthermore, the inner wall of the collecting chamber is fixedly connected with a right-angle tube connected to the drying chamber, the right-angle tube is horizontally bent, an exhaust port is provided at the top of the collecting chamber, a dust filter plate is provided at the exhaust port, the exhaust port is connected to an external hot air circulation system, and the position of the exhaust port is higher than the top of the right-angle tube.

[0012] Furthermore, a funnel cover is provided inside the collecting chamber, a discharge outlet is provided at the bottom of the funnel cover, the collecting chamber is divided by the funnel cover to form a temporary storage part and a discharge part, a discharge pipe connected to the discharge part is installed at the bottom of the drying box, and a control valve is installed on the discharge pipe.

[0013] Furthermore, L-shaped brackets are symmetrically installed on both sides of the inner wall of the discharge part, and the same sealing plate is slidably connected to the two L-shaped brackets. The side of the sealing plate is fixedly connected to a connecting rod that passes through the inner wall of the drying box, and an electric rod is installed outside the drying box.

[0014] Furthermore, the telescopic end of the electric rod is fixedly connected to the connecting rod, the connecting rod is slidably connected to the inner wall of the drying box, and a seal is provided between the connecting rod and the inner wall of the drying box.

[0015] Compared with the prior art, the powder drying device for pea protein production provided by the present invention has the following beneficial effects: 1. The powder drying device for pea protein production can efficiently break up the pea powder during the transportation process through the synergistic effect between the transfer box, the striking rod and the discharge arc plate. Moreover, under the coordinated effect between the guide covers, the hot air flow flowing through the discharge port can be guided and blocked, so that it cannot flow back from the discharge port into the transfer box, thereby allowing the drying work to continue.

[0016] 2. The powder drying device for pea protein production can disperse the powder multiple times during the discharge process through the cooperation between multiple rows of staggered striking blades and striking plates corresponding to the guide slopes, thereby ensuring the dispersion of the powder being dried and further improving the drying efficiency of the pea powder.

[0017] 3. The powder drying device for pea protein production can separate the collection chamber into a temporary storage part and a discharge part distributed up and down by setting a funnel cover, so that when the amount of powder accumulated inside the discharge part is large, the discharge port can be closed by a sealing plate, so that the powder stays and accumulates in the temporary storage part, and at the same time, the bottom control valve is opened so that the powder below can be discharged from the discharge pipe, thereby making the powder discharge process more flexible, controllable, and sustainable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 A schematic diagram of the overall longitudinal cross-sectional structure provided by an embodiment of the present invention; Figure 3 The embodiment of the present invention provides Figure 2 The enlarged structural diagram at A in the middle; Figure 4 A schematic diagram of the structure of a transfer box provided in an embodiment of the present invention; Figure 5 A schematic diagram of the structure of a deflector provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the transverse cross-sectional structure of a drying box provided in an embodiment of the present invention.

[0020] Description of reference numerals: 1. Drying box; 101. Drying chamber; 102. Collecting chamber; 103. Hot air blower; 104. Auger conveying pipe; 2. Transfer box; 21. Cylindrical trough; 22. Discharge port; 23. Rotating shaft; 24. Discharge arc plate; 25. Striking rod; 26. Air guide cover; 3. Air guide slope; 31. Striking blade; 32. Striking plate; 4. Right-angle pipe; 41. Exhaust port; 42. Funnel cover; 43. Exhaust port; 44. Temporary storage part; 45. Discharge part; 46. Discharge pipe; 47. Control valve; 48. L-shaped bracket; 49. Sealing plate; 410. Connecting rod; 411. Electric rod; 412. Dust filter plate. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Embodiment 1

[0022] See also Figure 1-Figure 6 A powder drying device for pea protein production includes a drying box 1 and a drying chamber 101 and a collecting chamber 102 opened inside the drying box 1. A hot air blower 103 for sending hot air to the bottom of the drying chamber 101 is arranged at the bottom of the drying box 1. An auger conveying pipe 104 for conveying powder to the inside of the drying chamber 101 is arranged on the side of the drying box 1. A transfer box 2 is fixedly installed on the side of the drying box 1, and the top of the transfer box 2 is connected to the auger conveying pipe 104. A cylindrical groove 21 is opened inside the transfer box 2, and a discharge port 22 connected to the drying chamber 101 is opened at the bottom of the side of the cylindrical groove 21. The inner side of the cylindrical groove 21 is rotatably connected to a rotating shaft 23, and a plurality of discharge arc plates 24 are arranged at the bottom of the outer side of the rotating shaft 23. A plurality of striking rods 25 are arranged outside the rotating shaft 23, and all the striking rods 25 are arranged equidistantly in a spiral shape from top to bottom. A guide hood 26 corresponding to the discharge port 22 is fixedly installed on the inner wall of the dry chamber 101. The top position of the guide hood 26 is higher than the top position of the discharge port 22. A guide slope 3 is arranged on the side of the guide hood 26 away from the discharge port 22. The guide slope 3 is arranged to be inclined upward on the side away from the discharge port 22, so that it can guide the upward-flowing hot air flow and prevent it from pouring into the discharge port 22, thereby ensuring the continuous transportation of the powder to be dried and preventing the hot air flow from being easily poured into.

[0023] It should be noted that by arranging all the striking rods 25 in a spiral shape from top to bottom, the striking rods 25 can strike the powder evenly and fully during the rotation process, thereby avoiding powder agglomeration and improving the drying efficiency.

[0024] Furthermore, the size specifications of the discharge arc plate 24 are compatible with the cylindrical groove 21. The rotating shaft 23 is driven by a motor, and when the motor drives the rotating shaft 23 to rotate, the discharge arc plate 24 pushes the powder at the bottom of the cylindrical groove 21 out from the discharge port 22.

[0025] In this embodiment, the inner wall of the collecting chamber 102 is fixedly connected with a right-angle tube 4 connected to the drying chamber 101, the right-angle tube 4 is horizontally bent, and an exhaust port 41 is provided at the top of the collecting chamber 102, and a dust filter plate 412 is provided at the exhaust port 41. The exhaust port 41 is connected to an external hot air circulation system, and the position of the exhaust port 41 is higher than the top of the right-angle tube 4, so that after the dried powder passes through the right-angle tube 4 into the drying chamber 101, it can rotate along the inner wall of the collecting chamber 102, and during the rotation, the pea powder with larger mass will fall and accumulate under the action of its own weight, while the lighter gas will float upward and be discharged from the top exhaust port 41.

[0026] During operation, the hot air blower 103 is started, and the hot air is sent into the drying chamber 101 through the bottom, and the auger conveying pipe 104 conveys the powder to the transfer box 2. During this process, the motor drives the rotating shaft 23 to rotate, and the rotating shaft 23 continuously drives the striking rod 25 and the discharge arc plate 24 to rotate synchronously during the rotation. The striking rod 25 can hit the powder in the falling process during the rotation, so that the agglomerated powder can be broken up. After the powder falls to the bottom of the cylindrical groove 21, it is conveyed by the discharge arc plate 24 and discharged to the outside of the cylindrical groove 21, so that it moves along the surface of the guide slope 3, and finally separates from the guide cover 26, and mixes into the hot air flow flowing from bottom to top, and is heated and dried by the hot air flow. Embodiment 2

[0027] See also Figure 2-Figure 4 This embodiment provides a technical solution based on the above embodiment. A funnel cover 42 is provided inside the collecting chamber 102, and a discharge port 43 is provided at the bottom of the funnel cover 42. The collecting chamber 102 is divided by the funnel cover 42 to form a temporary storage part 44 and a discharge part 45. A discharge pipe 46 connected to the discharge part 45 is installed at the bottom of the drying box 1, and a control valve 47 is installed on the discharge pipe 46.

[0028] It should be supplemented that L-shaped brackets 48 are symmetrically installed on both sides of the inner wall of the discharge part 45, and the same sealing plate 49 is slidably connected to the two L-shaped brackets 48. The side of the sealing plate 49 is fixedly connected to a connecting rod 410 that penetrates the inner wall of the drying box 1. An electric rod 411 is installed on the outside of the drying box 1, and the telescopic end of the electric rod 411 is fixedly connected to the connecting rod 410. The connecting rod 410 is slidably connected to the inner wall of the drying box 1, and a seal is set between the connecting rod 410 and the inner wall of the drying box 1.

[0029] It should be further explained that a control system is provided on the outside of the drying box 1, and the electric rod 411 and the control valve 47 are both connected to the control system. The control system adjusts the intermittent start and stop of the electric rod 411, and controls the control valve 47 and the electric rod 411 to work together, so that powder can be discharged intermittently during the drying process to ensure the continuous drying of the powder.

[0030] In the initial working state, the discharge port 43 is in an open state, and the powder that sinks to the bottom of the funnel cover 42 will be discharged from the discharge port 43 to the discharge part 45 below. When the powder in the discharge part 45 accumulates to a certain amount, the electric rod 411 is started, so that its telescopic end retracts and drives the connecting rod 410 to push the sealing plate 49 to move, so that the sealing plate 49 closes the discharge port 43 at the bottom of the funnel cover 42, so that the powder can no longer be discharged, thereby accumulating in the temporary storage part 44. At this time, the control valve 47 is opened, so that the powder accumulated in the temporary storage part 44 can be discharged from the bottom discharge pipe 46, and after the discharge, the electric rod 411 is started again, the sealing plate 49 is reset, the discharge port 43 is reopened, and the powder collection and discharge cycle continues, ensuring that the drying process is continuous and efficient and avoiding powder backlog. Embodiment 3

[0031] See also Figure 2 , Figure 5 This embodiment provides a technical solution based on the above embodiment: a plurality of rows of striking blades 31 are equidistantly arranged on the upper surface of the guide slope 3 along its inclination direction, the striking blades 31 in each row are equidistantly arranged, and the striking blades 31 in two adjacent rows are staggered, so that when the powder moves along the guide slope 3, the large particle agglomerates that exist can be broken up by the mutual cooperation between the plurality of rows of striking blades 31, thereby ensuring that the powder is dried more fully.

[0032] Furthermore, a striking plate 32 corresponding to the guide slope 3 is fixedly installed on the inner side surface of the drying chamber 101. After the discharge arc plate 24 pushes the powder to flow along the guide slope 3 and separates, the powder collides with the surface of the striking plate 32 as the hot air flow rises, so that the agglomerated powder that has escaped from the striking edge 31 can still be broken up, so that the powder can be in a looser state during drying, so as to facilitate efficient drying.

[0033] When the powder moves along the surface of the guide slope 3 under the push of the discharge arc plate 24, the existing agglomerated powder can be further broken up with the cooperation of the striking blade 31. Moreover, after the powder separates from the guide slope 3, it comes into contact with the upward flowing hot air flow and collides with the striking plate 32 again during the upward movement, thereby further breaking up the residual agglomerates, ensuring uniform drying of the powder and improving drying efficiency.

[0034] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A powder drying device for producing pea protein, comprising a drying box (1) and a drying chamber (101) and a collecting chamber (102) provided inside the drying box (1), characterized in that: A hot air blower (103) for delivering hot air to the bottom of the drying chamber (101) is arranged at the bottom of the drying box (1), and an auger conveying pipe (104) for conveying powder into the drying chamber (101) is arranged on the side of the drying box (1); A transfer box (2) is fixedly mounted on the side of the drying box (1), the top of the transfer box (2) is connected to the auger conveying pipe (104), a cylindrical groove (21) is provided inside the transfer box (2), a discharge port (22) connected to the drying chamber (101) is provided at the bottom of the side of the cylindrical groove (21), the inner side of the cylindrical groove (21) is rotatably connected to a rotating shaft (23), a plurality of discharge arc plates (24) are provided at the bottom of the outer side of the rotating shaft (23), a plurality of striking rods (25) are provided outside the rotating shaft (23), all striking rods (25) are equidistantly arranged in a spiral shape from top to bottom, a flow guide cover (26) corresponding to the discharge port (22) is fixedly mounted on the inner wall of the drying chamber (101), the top position of the flow guide cover (26) is higher than the top position of the discharge port (22).

2. A powder drying device for pea protein production according to claim 1, characterized in that: The size specifications of the discharge arc plate (24) are compatible with the cylindrical groove (21), and the rotating shaft (23) is driven by a motor. When the motor drives the rotating shaft (23) to rotate, the discharge arc plate (24) pushes the powder at the bottom of the cylindrical groove (21) out from the discharge port (22).

3. A powder drying device for pea protein production according to claim 1, characterized in that: A flow guide slope (3) is provided on the side of the flow guide cover (26) away from the material outlet (22), and the side of the flow guide slope (3) away from the material outlet (22) is inclined upward.

4. A powder drying device for pea protein production according to claim 3, characterized in that: The upper surface of the guide slope (3) is provided with a plurality of rows of striking blades (31) at equal intervals along its inclination direction, the striking blades (31) in each row are arranged at equal intervals, and the striking blades (31) in two adjacent rows are arranged in a staggered manner.

5. A powder drying device for pea protein production according to claim 4, characterized in that: A striking plate (32) corresponding to the guide slope (3) is fixedly mounted on the inner side surface of the drying chamber (101); after the discharge arc plate (24) pushes the powder to flow along the guide slope (3) and separate, the powder collides with the surface of the striking plate (32) as it rises with the hot air flow.

6. A powder drying device for pea protein production according to claim 1, characterized in that: The inner wall of the collecting chamber (102) is fixedly connected to a right-angle tube (4) communicating with the drying chamber (101); the right-angle tube (4) is arranged to be bent horizontally; an exhaust port (41) is arranged at the top of the collecting chamber (102); a dust filter plate (412) is arranged at the exhaust port (41); the exhaust port (41) is connected to an external hot air circulation system; the exhaust port (41) is located above the right-angle tube (4).

7. A powder drying device for pea protein production according to claim 6, characterized in that: A funnel cover (42) is provided inside the collecting chamber (102), a discharge outlet (43) is provided at the bottom of the funnel cover (42), the collecting chamber (102) is divided by the funnel cover (42) into a temporary storage portion (44) and a discharge portion (45), a discharge pipe (46) connected to the discharge portion (45) is installed at the bottom of the drying box (1), and a control valve (47) is installed on the discharge pipe (46).

8. A powder drying device for pea protein production according to claim 7, characterized in that: L-shaped brackets (48) are symmetrically mounted on both sides of the inner wall of the discharge portion (45); the two L-shaped brackets (48) are slidably connected to a same sealing plate (49); the side of the sealing plate (49) is fixedly connected to a connecting rod (410) that passes through the inner wall of the drying box (1); and an electric rod (411) is mounted on the outside of the drying box (1).

9. A powder drying device for pea protein production according to claim 8, characterized in that: The telescopic end of the electric rod (411) is fixedly connected to the connecting rod (410), the connecting rod (410) is slidably connected to the inner wall of the drying box (1), and a seal is provided between the connecting rod (410) and the inner wall of the drying box (1).

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