Fine grinding device for processing instant oolong tea powder

Abstract

The invention discloses a fine grinding device for processing instant oolong tea powder. The fine grinding device comprises a box body, an upper grinding chamber, a lower grinding chamber, an upper transmission shaft, an upper grinding roller, a lower transmission shaft, a lower grinding roller, a feeding opening, a dredging assembly, an L-shaped supporting plate, a first motor, a main shaft and a spiral blade. An upper grinding chamber and a lower grinding chamber are arranged on the upper portion and the lower portion of the interior of the box body correspondingly, two sets of upper transmission shafts are arranged on the inner side wall of the box body and located in the upper grinding chamber, and upper grinding rollers are fixedly connected to the exteriors of the upper transmission shafts; a lower transmission shaft is arranged on the inner side wall of the box body and located in the lower grinding cavity, and a lower grinding roller is fixedly connected to the outer portion of the lower transmission shaft. A feeding port is formed in the top of the box body, a dredging assembly is arranged on the feeding port and comprises an L-shaped supporting plate, a first motor, a main shaft and a spiral blade, the feeding port can be dredged, the blocking condition is avoided, meanwhile, double grinding is achieved, and the machining quality is improved.

Description

Technical Field

[0001] This invention relates to the technical field of tea powder grinding, and in particular to the technical field of fine grinding equipment for processing instant oolong tea powder. Background Technology

[0002] In the production process of instant oolong tea powder, grinding equipment is used to pulverize the tea raw materials to obtain finer tea powder particles. This process can significantly improve the solubility and taste of the tea powder, while preserving the unique aroma and flavor of oolong tea.

[0003] Currently, some grinding equipment on the market cannot achieve ultra-fine grinding of tea leaves, resulting in a large amount of unground tea leaves, low overall grinding efficiency, and long processing time.

[0004] To address the problems mentioned above, for example, application number CN201520202220.2 discloses an ultrafine tea grinding machine, including a frame, a housing mounted on the frame via a rotating shaft, the rotating shaft carrying a first drive motor, and multiple annularly arranged grinding structures on the inner wall of the housing, each grinding structure including multiple linearly arranged grinding rods; it also includes multiple movably disposed circular ceramic balls inside the housing, which can roll freely inside the housing. In this invention, the collision between the grinding rods and the ceramic balls confines the ceramic balls to the inner wall of the housing. Furthermore, the large number of ceramic balls greatly increases the probability of collision between them, thus grinding and pulverizing the tea leaves through the collision of the ceramic balls, improving the overall grinding efficiency and quality.

[0005] However, the noise generated by the collision between the ceramic balls is relatively large, which affects the work of the staff and results in lower grinding quality.

[0006] To address the problems mentioned above, for example, application number CN201720322777.9 discloses a tea grinding machine, including a frame and a grinding cylinder. The frame includes two spaced-apart supports and a connecting seat between two adjacent supports. The grinding cylinder is rotatably mounted on the connecting seat, and the connecting seat is equipped with a drive motor for driving the grinding cylinder to rotate. In this invention, the grinding cylinder rotates around a pivot axis, resulting in smooth rotation and low noise. Through the collision between the grinding rod and the grinding balls, the grinding balls are confined to the inner wall of the grinding cylinder, thus grinding and pulverizing the tea leaves. Simultaneously, due to the regular polygonal structure of the grinding cylinder, there is a turning angle at the connection between the cylinder plates. The grinding balls collide with the cylinder plates at this turning angle, further grinding and pulverizing the tea leaves, improving the overall grinding efficiency and quality.

[0007] However, when the above-mentioned grinding device is used, the tea leaves tend to stick to the grinding chamber or clump together, which affects the grinding effect of the device.

[0008] To address the problems mentioned above, for example, application number CN202321581640.7 discloses a high-efficiency tea grinding device, including a support frame with a storage chamber fixedly connected to it; a grinding chamber slidably connected to the support frame, and a feeding structure that cooperates with the grinding chamber on the storage chamber; a sleeve fixedly connected to the storage chamber, and a grinding structure that cooperates with the grinding chamber on the sleeve. The rotating chamber drives a rotating bevel gear, a grinding roller, a dispersing paddle, and a scraper to move synchronously. Under the action of the fixed bevel gear, the rotating bevel gear rotates; the rotating bevel gear drives the grinding roller to grind the tea leaves, and the scraper scrapes the tea leaves from the bottom surface of the grinding chamber, effectively preventing the tea leaves from sticking to the grinding chamber. The dispersing paddle disperses any clumps of tea leaves, effectively preventing clumping and improving the grinding effect of the grinding roller on the tea leaves.

[0009] However, the above-mentioned device still has the following drawbacks: When the above-mentioned device grinds tea leaves, the tea leaves are prone to clogging the feed inlet, making it difficult to feed the tea leaves during the grinding process. It requires workers to manually use wires or rods to clear the blockage. This operation method is time-consuming and labor-intensive, and it can only perform single grinding and cannot perform secondary grinding, which greatly reduces the quality of work. Summary of the Invention

[0010] The purpose of this invention is to solve the problems in the prior art and to propose a fine grinding device for processing instant oolong tea powder, which can unclog the feed inlet to avoid blockage, and at the same time perform double grinding to improve the processing quality.

[0011] To achieve the above objectives, this invention proposes a fine grinding device for processing instant oolong tea powder, comprising a housing, an upper grinding chamber, a lower grinding chamber, an upper drive shaft, an upper grinding roller, a lower drive shaft, a lower grinding roller, a feed inlet, a dredging assembly, an L-shaped support plate, a first motor, a main shaft, and spiral blades; the upper grinding chamber and lower grinding chamber are respectively located at the top and bottom of the housing; two sets of upper drive shafts are located on the inner side wall of the housing within the upper grinding chamber, and upper grinding rollers are fixedly connected to the outside of each upper drive shaft; the inner side of the housing... A lower drive shaft is located in the lower grinding chamber and a lower grinding roller is fixedly connected to the outside of the lower drive shaft. A feed inlet is opened at the top of the box body, and a clearing assembly is provided on the feed inlet. The clearing assembly includes an L-shaped support plate, a first motor, a main shaft, and spiral blades. The L-shaped support plate is located at the top of the box body, and the first motor is installed on the top of the L-shaped support plate. The output shaft of the first motor passes through the bottom of the L-shaped support plate and is connected to the main shaft through a coupling. Spiral blades are installed on the outer wall of the main shaft and are located in the feed inlet.

[0012] Preferably, the two sets of upper grinding rollers are arranged in parallel and close to each other, and the outer wall of each upper grinding roller is equipped with a number of grinding protrusions, which are distributed in a ring at equal intervals.

[0013] Preferably, the inner sides of the box are provided with guide plates, with a gap between the two guide plates for the tea leaves to pass through, and the guide plates are all inclined downwards and located below the upper grinding roller.

[0014] Preferably, the outer wall of the lower grinding roller is provided with a number of arc-shaped pressure plates, which are distributed in a ring at equal intervals, and the outer surface of the arc-shaped pressure plates is provided with a number of serrations.

[0015] Preferably, one end of each of the two sets of upper drive shafts penetrates the rear side wall of the housing, and a first pulley is fixedly mounted on the end of each upper drive shaft penetrating the rear side wall of the housing. A first belt is fitted around the outside of the two first pulleys.

[0016] Preferably, one end of the upper drive shaft extends forward through the rear side wall of the housing and is fitted with a second pulley, and one end of the lower drive shaft extends through the rear side wall of the housing and is fitted with a third pulley. The third pulley and the second pulley are both fitted with a second belt.

[0017] Preferably, a concave support plate is installed on the rear side wall of the housing, and a second motor is installed on the side wall of the concave support plate. The output shaft of the second motor passes through the side wall of the concave support plate and is connected to one end of the lower transmission shaft through a coupling.

[0018] Preferably, several columns are vertically installed at the bottom of the box, and the bottom ends of the columns are connected to a base plate. A receiving box is placed on the base plate, and a discharge pipe is connected to the top of the receiving box. The top end of the discharge pipe is connected to the interior of the box, and a control valve is provided on the discharge pipe.

[0019] Preferably, the side wall of the housing is equipped with a control panel, which is electrically connected to the first motor and the second motor.

[0020] The beneficial effects of this invention are: 1. By adding a dredging component, when tea leaves are poured in, the first motor drives the output shaft to rotate, which in turn drives the main shaft and the spiral blades to rotate. During the rotation of the spiral blades, on the one hand, the spiral blades can break up the tea leaves that are intertwined and bridging each other, and on the other hand, the rotation of the spiral blades generates a downward axial thrust that can push the tea leaves downward, thereby achieving the dual effect of dredging and conveying. 2. This invention sets up an upper grinding chamber and a lower grinding chamber. The upper grinding roller in the upper grinding chamber is responsible for coarse crushing, breaking the tea leaves into smaller particles. The lower grinding roller in the lower grinding chamber is responsible for fine grinding, further grinding the coarse particles into an extremely fine powder that meets the requirements for instant dissolution. The material automatically falls from the upper grinding chamber into the lower grinding chamber, completing the two-stage crushing operation continuously in one device. This achieves an integrated secondary grinding function, significantly improving crushing efficiency and product fineness. Attached Figure Description

[0021] Figure 1 This is a front view of the fine grinding device for processing instant oolong tea powder according to the present invention; Figure 2 This is an internal cross-sectional view of the fine grinding device for processing instant oolong tea powder according to the present invention; Figure 3 This is a rear view of the fine grinding device for processing instant oolong tea powder according to the present invention; Figure 4 This is a schematic diagram of the unblocking component of the fine grinding device for processing instant oolong tea powder according to the present invention; Figure 5 This is an enlarged schematic diagram of the upper grinding roller of the fine grinding device for processing instant oolong tea powder according to the present invention; Figure 6 This is an enlarged schematic diagram of the lower grinding roller of the fine grinding device for processing instant oolong tea powder according to the present invention; In the diagram: 1-box body, 2-upper grinding chamber, 3-lower grinding chamber, 4-upper drive shaft, 5-upper grinding roller, 501-grinding protrusion, 6-lower drive shaft, 7-lower grinding roller, 701-arc-shaped pressure plate, 702-serration, 8-feed inlet, 9-dredging component, 901-L-shaped support plate, 902-first motor, 903-main shaft, 904-spiral blade, 10-guide plate, 11-first pulley, 12-first belt, 13-second pulley, 14-third pulley, 15-second belt, 16-concave support plate, 17-second motor, 18-column, 19-base plate, 20-receiving box, 21-discharge pipe, 22-control panel. Detailed Implementation

[0022] See Figures 1 to 6This invention relates to a fine grinding device for processing instant oolong tea powder, comprising a housing 1, an upper grinding chamber 2, a lower grinding chamber 3, an upper drive shaft 4, an upper grinding roller 5, a lower drive shaft 6, a lower grinding roller 7, a feed inlet 8, a dredging assembly 9, an L-shaped support plate 901, a first motor 902, a main shaft 903, and spiral blades 904. The housing 1 has an upper grinding chamber 2 at its upper and a lower grinding chamber 3 at its lower. Two sets of upper drive shafts 4 are located on the inner wall of the housing 1 within the upper grinding chamber 2, and upper grinding rollers 5 are fixedly connected to the outside of each upper drive shaft 4. A lower drive shaft 6 is located on the inner wall of the housing 1 within the lower grinding chamber 3, and a lower grinding roller 7 is fixedly connected to the outside of the lower drive shaft 6. A feed inlet 8 is located at the top of the housing 1, and a dredging assembly 9 is provided on the feed inlet 8. The dredging assembly 9 includes an L-shaped support plate 901, a first motor 902, a main shaft 903, and spiral blades 904. The assembly includes a motor 902, a main shaft 903, and spiral blades 904. The L-shaped support plate 901 is located at the top of the housing 1. The first motor 902 is installed on the top of the L-shaped support plate 901. The output shaft of the first motor 902 passes through the bottom of the L-shaped support plate 901 and is connected to the main shaft 903 via a coupling. The spiral blades 904 are installed on the outer wall of the main shaft 903 and are located in the feed inlet 8. Tea leaves are fed into the feed inlet 8 from the top. The first motor 902 in the unblocking assembly 9 starts, driving the main shaft 903 and spiral blades 904 to rotate. The rotation of the spiral blades 904 can break up any tea leaf clumps that may form and generate a downward pushing force to force the tea leaves into the upper grinding chamber 2, thereby effectively preventing the tea leaves from bridging or clogging at the feed inlet 8. The tea leaves then pass through the upper and lower grinding chambers in sequence for crushing.

[0023] See Figure 2 and Figure 5 The two sets of upper grinding rollers 5 are arranged in parallel and close to each other. The outer wall of each upper grinding roller 5 is equipped with several grinding protrusions 501, and the grinding protrusions 501 are distributed in a ring at equal intervals. The two upper grinding rollers 5 with grinding protrusions 501 rotate towards each other. One upper grinding roller 5 rotates counterclockwise and the other upper grinding roller 5 rotates clockwise, crushing, shearing and breaking the tea leaves that fall between them into coarser particles, thereby performing preliminary grinding.

[0024] See Figure 2 The box 1 has guide plates 10 on both sides inside. There is a gap between the two guide plates 10 for tea leaves to pass through. The guide plates 10 are both inclined downward and located below the upper grinding roller 5. The tea leaves that are broken by the upper grinding roller 5 fall on the downward inclined guide plates 10, slide down naturally by gravity, and fall in a concentrated manner through the gap between the two guide plates 10, and are evenly distributed on the lower grinding roller 7.

[0025] See Figure 6The outer wall of the lower grinding roller 7 is provided with several arc-shaped pressing plates 701. The arc-shaped pressing plates 701 are distributed in a ring at equal intervals, and the outer surface of the arc-shaped pressing plates 701 is distributed with several serrations 702. When the lower grinding roller 7 rotates, the arc-shaped pressing plates 701 on its surface press the tea leaves onto the bottom wall of the lower grinding chamber 3. The serrations 702 structure scrapes and tears the tea leaves while grinding, further crushing the coarse particles into finer tea powder to meet the fineness requirements of instant tea powder.

[0026] See Figure 3 One end of each of the two sets of upper drive shafts 4 penetrates the rear side wall of the housing 1. A first pulley 11 is fixedly mounted on one end of each upper drive shaft 4 penetrating the rear side wall of the housing 1. A first belt 12 is sleeved on the outside of the two first pulleys 11. When one of the upper drive shafts 4 rotates, it drives the first pulley 11 to rotate. After the first pulley 11 rotates, it drives the other set of upper drive shafts 4 to rotate through the first belt 12, so that the two sets of upper drive shafts 4 rotate in opposite directions, thereby driving the two upper grinding rollers 5 to form an effective grinding area.

[0027] See Figure 3 One of the upper drive shafts 4 extends forward through the rear side wall of the housing 1 and is fitted with a second pulley 13. One end of the lower drive shaft 6 extends through the rear side wall of the housing 1 and is fitted with a third pulley 14. The third pulley 14 and the second pulley 13 are both fitted with a second belt 15. When the lower drive shaft 6 rotates, it drives the lower grinding roller 7 to rotate, and simultaneously drives the third pulley 14 to rotate. The third pulley 14 drives the second pulley 13 to rotate through the second belt 15. The second pulley 13 drives one of the upper drive shafts 4 to rotate.

[0028] See Figure 3 A concave support plate 16 is installed on the rear side wall of the housing 1. A second motor 17 is installed on the side wall of the concave support plate 16. The output shaft of the second motor 17 passes through the side wall of the concave support plate 16 and is connected to one end of the lower transmission shaft 6 through a coupling. The second motor 17 drives the output shaft to rotate, thereby driving the lower transmission shaft 6 to rotate. The lower transmission shaft 6 then transmits the power to the upper grinding roller 5 in sequence, realizing the linkage of the whole machine.

[0029] See Figure 1 The bottom of the box 1 is vertically equipped with several columns 18, and the bottom ends of the columns 18 are connected to a base plate 19. A receiving box 20 is placed on the base plate 19. The top of the receiving box 20 is connected to a discharge pipe 21. The top end of the discharge pipe 21 is connected to the inside of the box 1, and a control valve is provided on the discharge pipe 21. The tea powder that has been ground twice falls into the bottom of the box 1 and flows into the receiving box 20 under the action of gravity through the discharge pipe 21. The control valve can close the discharge pipe 21 to prevent dust from escaping during the grinding process, or stop the discharge when the receiving box 20 is full so that it can be replaced.

[0030] See Figure 1 The side wall of the housing 1 is equipped with a control panel 22, which is electrically connected to the first motor 902 and the second motor 17. The operator can send commands through the control panel 22 to control the start, stop and speed adjustment of the first motor 902 and the second motor 17 without the need for manual operation of the mechanical equipment.

[0031] The working process of this invention: In operation, the fine grinding device for processing instant oolong tea powder of this invention operates as follows: During operation, the operator starts the device via control panel 22. The first motor 902 drives the spiral blades 904 to rotate continuously within the feed inlet 8. Oolong tea leaves are added through the feed inlet 8, and the rotating spiral blades 904 immediately clear and initially crush them, forcibly pushing them downwards into the upper grinding chamber 2. The second motor 17 drives the output shaft to rotate, which in turn drives the lower transmission shaft 6 to rotate. The rotation of the lower transmission shaft 6 drives the lower grinding roller 7 to rotate simultaneously, and also drives the third pulley 14 to rotate. The third pulley 14 drives the second pulley 13 to rotate via the second belt 15. The second pulley 13 drives one of the upper transmission shafts 4 to rotate. The rotation of the upper transmission shaft 4 then drives the first pulley 11 to rotate. The rotation of the first pulley 11 then drives another set of... The upper drive shaft 4 rotates, causing the two sets of upper drive shafts 4 to rotate in opposite directions, thereby driving the two upper grinding rollers 5 to form an effective grinding area. The two opposing upper grinding rollers 5 with grinding protrusions 501 perform primary crushing and breaking of the tea leaves, turning them into coarse particles. The crushed coarse tea particles fall onto the inclined guide plate 10, are collected, and guided into the lower grinding chamber 3. In the lower grinding chamber 3, the lower drive shaft 6 rotates, driving the lower grinding roller 7 to rotate at high speed. The arc-shaped pressing plate 701 with serrations 702 on its surface performs secondary fine grinding of the coarse tea particles. Through crushing, shearing, and tearing, it is processed into very fine oolong tea powder. Finally, the fine tea powder falls into the bottom of the box 1 and flows into the receiving box 20 for storage through the bottom discharge pipe 21. Throughout the process, the feeding is smooth and the grinding is thorough, realizing continuous, automated, and efficient production.

[0032] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0033] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A fine grinding device for the processing of instant oolong tea powder, characterized by: The utility model provides a tea leaf grinding machine, including box (1), upper grinding chamber (2), lower grinding chamber (3), upper transmission shaft (4), upper grinding roller (5), lower transmission shaft (6), lower grinding roller (7), feed inlet (8), dredging subassembly (9), L type support board (901), first motor (902), main shaft (903) and spiral blade (904), the inside upper and lower of box (1) is equipped with upper grinding chamber (2) and lower grinding chamber (3) respectively, the inner side wall of box (1) and located in upper grinding chamber (2) is equipped with two groups upper transmission shaft (4), the outside of upper transmission shaft (4) is all fixed with upper grinding roller (5), the inner side wall of box (1) and located in lower grinding chamber (3) is equipped with lower transmission shaft (6), the outside of lower transmission shaft (6) is fixed with lower grinding roller (7), the top of box (1) is equipped with feed inlet (8), the feed inlet (8) is equipped with dredging subassembly (9), and the dredging subassembly (9) includes L type support board (901), first motor (902), main shaft (903) and spiral blade (904), L type support board (901) is located at the top of box (1), first motor (902) is installed at the top of L type support board (901), the output shaft of first motor (902) penetrates the lower of L type support board (901) and is connected with main shaft (903) through coupling, the outer wall of main shaft (903) is installed with spiral blade (904), and spiral blade (904) is located in feed inlet (8).

2. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized by: Two groups of upper grinding roller (5) are arranged in parallel and close to each other, the outer wall of upper grinding roller (5) is provided with a plurality of grinding protrusions (501), and the grinding protrusions (501) are annularly and equally spaced.

3. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized in that: The inside of box (1) is provided with guide plates (10) on both sides, a space is left between the two guide plates (10) for tea leaves to pass through, and the guide plates (10) are inclined downward and located below the upper grinding roller (5).

4. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized in that: The outer wall of the lower grinding roller (7) is provided with a plurality of arc-shaped tablets (701), the arc-shaped tablets (701) are annularly and equally spaced, and the outer surface of the arc-shaped tablets (701) is provided with a plurality of serrations (702).

5. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized in that: One end of each of the two upper transmission shafts (4) penetrates the rear side wall of the box (1), a first pulley (11) is fixed to one end of each of the upper transmission shafts (4) penetrating the rear side wall of the box (1), and a first belt (12) is sleeved around the two first pulleys (11).

6. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized in that: One end of one of the upper transmission shafts (4) penetrating the rear side wall of the box (1) extends forward and is provided with a second pulley (13), one end of the lower transmission shaft (6) penetrating the rear side wall of the box (1) is provided with a third pulley (14), and a second belt (15) is sleeved around the outer surfaces of the second pulley (13) and the third pulley (14).

7. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized in that: A concave support plate (16) is installed on the rear side wall of the housing (1), and a second motor (17) is installed on the side wall of the concave support plate (16). The output shaft of the second motor (17) passes through the side wall of the concave support plate (16) and is connected to one end of the lower transmission shaft (6) through a coupling.

8. The fine grinding device for processing instant oolong tea powder according to claim 1, characterized in that: The bottom of the box (1) is vertically equipped with several columns (18), and the bottom ends of the columns (18) are connected to a base plate (19). A receiving box (20) is placed on the base plate (19). The top of the receiving box (20) is connected to a discharge pipe (21). The top of the discharge pipe (21) is connected to the inside of the box (1), and a control valve is provided on the discharge pipe (21).

9. The fine grinding device for processing instant oolong tea powder according to claim 7, characterized in that: The side wall of the housing (1) is equipped with a control panel (22), which is electrically connected to the first motor (902) and the second motor (17).

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