Tea leaf refining negative pressure conveying cooling and impurity removing system

Abstract

The utility model discloses a tea leaf refining negative pressure conveying cooling and impurity removing system, including feeding device, receiving trough and negative pressure suction head, the downside of feeding device blanking end is installed with receiving trough, and receiving trough is inclined to set, and the outside of receiving trough upper end stretches out feeding device a distance, and receiving trough upper end is installed with negative pressure suction head. Through installing receiving trough in the downside of feeding device blanking end, and receiving trough upper end is installed with negative pressure suction head, when tea falls from the blanking end of feeding device, the adsorption airflow in negative pressure suction head will adsorb tea into negative pressure suction head, in the process of sucking tea, a large amount of air enters from negative pressure suction head, can carry out the cooling to tea, and will not cause dust to scatter disorderly, at the same time, the heavier sundries due to gravity greater than the suction force of adsorption airflow, thereby falling into receiving trough, and sliding from receiving trough, also have the effect of removing impurities.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and in particular to a negative pressure conveying, cooling and impurity removal system for tea refining. Background Technology

[0002] In the refining process of black tea, the raw tea leaves need to be dehumidified and dried first, and then sieved through a drum screen. Because the freshly dried tea leaves are hot and brittle, direct sieving through the drum screen can easily cause breakage. Therefore, it is necessary to cool the dried tea leaves. Currently, cooling is achieved by conveying the dried tea leaves onto a belt conveyor, with multiple fans installed on top of the conveyor to blow air onto the tea leaves, thus cooling them. However, this method blows dust and tea fragments into the workshop, causing the dust to disperse and affect the workshop environment. Therefore, we propose a negative pressure conveying cooling and impurity removal system for tea refining, as described in this application. Utility Model Content

[0003] The technical problem this invention aims to solve is to address the issues existing in the background technology by providing a negative pressure conveying, cooling, and impurity removal system for tea refining. This system involves installing a receiving trough on the lower side of the feeding device's discharge end and a negative pressure suction head on the upper end of the trough. When tea leaves fall from the feeding device's discharge end, the adsorption airflow inside the negative pressure suction head draws the tea leaves into it. During this process, a large amount of air enters through the negative pressure suction head, cooling the tea leaves and preventing dust from scattering randomly. Simultaneously, heavier impurities, due to their gravity exceeding the suction force of the adsorption airflow, fall into the receiving trough and slide off, thus also achieving an impurity removal effect.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a negative pressure conveying, cooling and impurity removal system for tea refining, including a feeding device, a receiving trough and a negative pressure suction head. The receiving trough is installed on the lower side of the feeding end of the feeding device. The receiving trough is inclined and the upper end of the receiving trough extends outward from the feeding device by a certain distance. A negative pressure suction head is installed on the upper end of the receiving trough.

[0005] The receiving trough is rotatably connected to the unloading end of the feeding device, and the upper end of the receiving trough is hinged to the negative pressure suction head.

[0006] The feeding device has first hinge seats fixed on the left and right sides of the bottom of the feeding end, and corresponding holes are provided on the two side walls of the receiving groove. The pin passes through the first hinge seats and the corresponding holes on the side walls of the receiving groove.

[0007] The upper end of the receiving trough is hinged to the negative pressure suction head via a hinge.

[0008] The lower end of the negative pressure suction head is angled on the side opposite to the feeding device.

[0009] The feeding device is a belt conveyor or a vibrating feeder.

[0010] The upper end of the negative pressure suction head is connected to the exhaust pipe.

[0011] The upper end of the negative pressure suction head is equipped with a telescopic tube, and the upper end of the telescopic tube is equipped with an exhaust pipe.

[0012] The upper end of the negative pressure suction head is fixed with a first flange, the upper and lower ends of the telescopic tube are respectively fixed with second flanges, and the lower end of the exhaust pipe is fixed with a third flange. The first flange is fitted with the second flange at the lower end of the telescopic tube, and the second flange at the upper end of the telescopic tube is fitted with the third flange. Multiple screws are arranged around the telescopic tube and pass through the first flange, the second flange and the third flange. The lower end of the screws is connected to the first flange and the lower second flange by two nuts, and the upper end of the screws is connected to the upper second flange and the third flange by two nuts.

[0013] A pneumatic conveying separator is installed at the upper end of the exhaust pipe.

[0014] The present invention has the following beneficial effects: 1. This utility model features a receiving trough installed on the lower side of the feeding device's discharge end, with a negative pressure suction head installed on the upper end of the trough. When tea leaves fall from the feeding device's discharge end, the suction airflow inside the negative pressure suction head draws the tea leaves into it. During the suction process, a large amount of air enters through the negative pressure suction head, cooling the tea leaves and simultaneously removing dust and debris, preventing dust from scattering randomly. Meanwhile, heavier debris, such as small stones, bolts, and nuts, falls into the receiving trough due to their gravity exceeding the suction force of the airflow and slides down, further enhancing the system's impurity removal effect.

[0015] 2. The receiving trough of this utility model is rotatably connected to the unloading end of the feeding device, and the upper end of the receiving trough is hinged to the negative pressure suction head. By finely adjusting the height of the negative pressure suction head, the distance between the lower end of the negative pressure suction head and the unloading end of the feeding device can be adjusted. Furthermore, when the negative pressure suction head is finely adjusted downwards, the angle between the bottom surface of the receiving trough and the horizontal plane will decrease, slowing down the speed at which the tea leaves are discharged from the receiving trough.

[0016] 3. The upper end of the exhaust pipe of this utility model is equipped with a pneumatic conveying equipment separator, which separates dust and fragments. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of AA.

[0020] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of BB.

[0021] Figure 4 for Figure 1 Enlarged structural diagram at point C.

[0022] Figure 5 for Figure 1 Enlarged structural diagram at point D.

[0023] In the picture: Feeding device 10, base 11, vibrating groove 12, double ear seat 121, first hinge seat 122, pin 123, spring 13, vibrating device 14, motor 141, rotating shaft 142, bearing seat 143, bracket 144, eccentric wheel 145, sleeve ring 146, connecting rod 147. Material receiving trough 20; Negative pressure suction head 30, bevel 31, hinge 32, first flange 33; Expansion tube 40, second flange 41, screw 42, nut 43; Exhaust duct 50, third flange 51; Pneumatic conveying equipment separator 60. Detailed Implementation

[0024] Example 1: like Figure 1-5 As shown, a negative pressure conveying, cooling and impurity removal system for tea refining includes a feeding device 10, a receiving trough 20 and a negative pressure suction head 30. The receiving trough 20 is installed on the lower side of the feeding end of the feeding device 10. The receiving trough 20 is inclined and extends outward from the feeding device 10 by a certain distance. The negative pressure suction head 30 is installed on the upper end of the receiving trough 20.

[0025] By installing a receiving trough 20 on the lower side of the feeding end of the feeding device 10, and a negative pressure suction head 30 on the upper end of the receiving trough 20, when tea leaves fall from the feeding end of the feeding device 10, the adsorption airflow in the negative pressure suction head 30 adsorbs the tea leaves into the negative pressure suction head 30. During the tea suction process, a large amount of air enters from the negative pressure suction head 30, which can cool the tea leaves and also suck away dust and debris, preventing dust from scattering disorderly. At the same time, heavier debris, such as small stones, small bolts, and nuts, falls into the receiving trough because their gravity is greater than the suction force of the adsorption airflow, and then slides off the receiving trough, which also makes the system effective in removing impurities.

[0026] See Figure 1 , 5The lower end of the negative pressure suction head 30 is slanted on the side opposite to the feeding device 10 to increase the adsorption area.

[0027] See Figure 1 The feeding device 10 adopts a belt conveyor or a vibrating feeder. Both belt conveyors and vibrating feeders can adopt existing technologies.

[0028] In this embodiment, see Figure 1 , 2 The feeding device 10 employs a vibrating feeder, which includes a base 11, a vibrating trough 12, spring plates 13, and a vibrating device 14. The vibrating trough 12 is elastically supported on the base 11 by at least four spring plates 13. The top of the vibrating trough 12 is open, the left end of the vibrating trough 12 has a baffle, and the right end of the vibrating trough 12 is open to form a discharge end. The vibrating device 14 is installed on the base 11 and is connected to the vibrating trough 12 to drive the vibrating trough 12 to vibrate and feed materials.

[0029] Specifically, see Figure 1 , 2 The vibration device 14 includes a motor 141, a rotating shaft 142, a bearing housing 143, a bracket 144, an eccentric wheel 145, a sleeve ring 146, and a connecting rod 147. The motor 141 is mounted on the base 11. The output shaft of the motor 141 is connected to the rotating shaft 142 through a transmission structure to drive the rotating shaft 142 to rotate. Bearing housings 143 are respectively mounted on both ends of the rotating shaft 142. A bracket 144 is mounted on the bottom of the bearing housings 143. The bracket 144 is fixedly mounted on the base 11. An eccentric wheel 145 is also fixedly mounted on the rotating shaft 142. A sleeve ring 146 is rotatably mounted on the outer circumference of the eccentric wheel 145 through a bearing. The outer wall of the sleeve ring 146 is fixedly connected to one end of the connecting rod 147. The other end of the connecting rod 147 is pivotally hinged to the double-ear seat 121. The double-ear seat 121 is fixedly connected to the bottom of the vibration groove 12. The motor 141 drives the rotating shaft 142 to rotate, which in turn drives the eccentric wheel 145 to rotate. This causes the sleeve ring 146 and connecting rod 147 to vibrate back and forth, thereby moving the tea leaves on the vibrating groove 12 to the lower end of the feed.

[0030] See Figure 2 The output shaft of motor 141 is equipped with a drive pulley, and the driven pulley is equipped on the rotating shaft 142. V-belts are installed on the drive pulley and the driven pulley.

[0031] Furthermore, the upper end of the negative pressure suction head 30 is connected to the exhaust pipe 50 so as to connect to the pneumatic conveying equipment separator 60.

[0032] Example 2: Based on Example 1, see Figure 1 , 5The receiving trough 20 is rotatably connected to the discharge end of the feeding device 10, and its upper end is hinged to the negative pressure suction head 30. By finely adjusting the height of the negative pressure suction head 30, the distance between the lower end of the negative pressure suction head 30 and the discharge end of the feeding device 10 can be adjusted. Furthermore, when the negative pressure suction head 30 is finely adjusted downwards, the angle between the bottom surface of the receiving trough 20 and the horizontal plane decreases, slowing down the speed at which tea leaves are discharged from the receiving trough 20.

[0033] It should be noted that the receiving trough 20 must have a certain slope so that heavier debris can slide off the receiving trough 20.

[0034] Specifically, see Figure 3 , 5 The feeding device 10 has first hinge seats 122 fixed on the left and right sides of the bottom of the feeding end, and corresponding holes are provided on the two side walls of the receiving groove 20. The pin 123 passes through the first hinge seat 122 and the corresponding holes on the side walls of the receiving groove 20.

[0035] See Figure 5 The upper end of the receiving groove 20 is hinged to the negative pressure suction head 30 via a hinge 32. There are two hinges 32, and the two ends of the hinge 32 are welded to the receiving groove 20 and the negative pressure suction head 30 respectively.

[0036] Example 3: Based on Example 2, see Figure 1 , 5 A telescopic tube 40 is installed at the upper end of the negative pressure suction head 30, and an exhaust pipe 50 is installed at the upper end of the telescopic tube 40. By adjusting the length of the telescopic tube 40, the distance between the lower end of the negative pressure suction head 30 and the feeding end of the feeding device 10 can be adjusted.

[0037] In this embodiment, the telescopic tube 40 is a metal corrugated pipe.

[0038] Of course, the telescopic tube 40 can also adopt a structure in which two metal tubes, inner and outer, slide together.

[0039] Further, see Figure 5 A first flange 33 is fixed to the upper end of the negative pressure suction head 30, second flanges 41 are fixed to the upper and lower ends of the telescopic tube 40, and a third flange 51 is fixed to the lower end of the exhaust pipe 50. The first flange 33 fits into the second flange 41 at the lower end of the telescopic tube 40, and the second flange 41 at the upper end of the telescopic tube 40 fits into the third flange 51. Multiple screws 42 are arranged around the telescopic tube 40 and pass through the first flange 33, the second flange 41, and the third flange 51. The lower end of the screws 42 connects the first flange 33 and the lower second flange 41 with two nuts 43, and the upper end of the screws 42 connects the upper second flange 41 and the third flange 51 with two nuts 43. This structure facilitates the adjustment of the length of the telescopic tube 40.

[0040] Specifically, the lower end of the screw 42 connects and fixes the first flange 33 and the lower second flange 41 via two nuts 43. When the telescopic tube 40 needs to be lengthened, loosen the nut at the upper end of the screw 42 located on the upper side of the third flange 51, and then symmetrically tighten the lower nut to push the telescopic tube 40 upward. After adjustment, tighten the nut at the upper end of the screw 42. When the telescopic tube 40 needs to be shortened, loosen the nut at the upper end of the screw 42 located on the lower side of the second flange 41, and then symmetrically tighten the upper nut to squeeze the telescopic tube 40 downward. After adjustment, tighten the nut at the upper end of the screw 42. Since the exhaust pipe 50 is fixedly installed, the negative pressure suction head 30 can be slightly adjusted up and down.

[0041] Example 4: Based on Example 1, 2, or 3, see [link to example]. Figure 1 The upper end of the exhaust pipe 50 is equipped with a pneumatic conveying separator 60, which separates dust and debris.

[0042] The pneumatic conveying equipment separator 60 adopts existing technology, such as the pneumatic conveying equipment separator disclosed by our company in CN203748554U.

[0043] In application, the air outlet of the pneumatic conveying equipment separator is connected to the air inlet of the blower, the feed inlet is connected to the upper end of the exhaust pipe 50, and a star-shaped unloader is installed at the discharge outlet.

[0044] The blower provides negative pressure adsorption force to the exhaust pipe 50. The tea leaves adsorbed by the negative pressure suction head 30 enter the exhaust pipe 50 and then enter the separator of the pneumatic conveying equipment. The separator of the pneumatic conveying equipment is equipped with an isolation mesh plate. Dust and debris are sucked away by the blower after passing through the isolation mesh plate and enter the dust removal system. After entering the separator of the pneumatic conveying equipment, the tea leaves fall downwards and are finally discharged into the lower pipeline through the star-shaped unloader, flowing to the next process.

[0045] The operation process or principle of this utility model is as follows: See Figure 1 After drying, the tea leaves are fed onto the feeding device 10. As the tea leaves fall from the discharge end of the feeding device 10, the adsorption airflow inside the negative pressure suction head 30 draws the tea leaves into the negative pressure suction head 30. During the tea-suction process, a large amount of air enters from the negative pressure suction head 30, which cools the tea leaves and also removes dust and debris, preventing dust from scattering disorderly. At the same time, heavier debris, such as small stones, small bolts, and nuts, falls into the receiving trough and slides down because their gravity is greater than the suction force of the adsorption airflow.

[0046] Tea leaves adsorbed by the negative pressure suction head 30 enter the exhaust pipe 50 and then enter the separator of the pneumatic conveying equipment. The separator is equipped with an isolation mesh plate. Dust and debris are sucked away by the fan after passing through the isolation mesh plate and enter the dust removal system. After entering the separator, the tea leaves fall downwards and are finally discharged through the star-shaped unloader into the lower pipe, flowing to the next process.

Claims

1. A negative pressure conveying, cooling, and impurity removal system for tea refining, characterized in that: It includes a feeding device (10), a receiving trough (20) and a negative pressure suction head (30). The receiving trough (20) is installed on the lower side of the feeding end of the feeding device (10). The receiving trough (20) is inclined and the upper end of the receiving trough (20) extends outward from the feeding device (10) by a certain distance. The negative pressure suction head (30) is installed on the upper end of the receiving trough (20).

2. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 1, characterized in that: The receiving trough (20) is rotatably connected to the unloading end of the feeding device (10), and the upper end of the receiving trough (20) is hinged to the negative pressure suction head (30).

3. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 2, characterized in that: The feeding device (10) has a first hinge seat (122) fixed on the left and right sides of the bottom of the feeding end, and the two side walls of the receiving groove (20) are respectively provided with corresponding holes. The pin (123) passes through the first hinge seat (122) and the corresponding holes on the side wall of the receiving groove (20).

4. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 2, characterized in that: The upper end of the receiving groove (20) is hinged to the negative pressure suction head (30) via a hinge (32).

5. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 1, characterized in that: The lower end of the negative pressure suction head (30) is angled (31) on the side opposite to the feeding device (10).

6. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 1, characterized in that: The feeding device (10) is a belt conveyor or a vibrating feeder.

7. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 1, characterized in that: The upper end of the negative pressure suction head (30) is connected to the exhaust pipe (50).

8. The negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 2, characterized in that: The upper end of the negative pressure suction head (30) is equipped with a telescopic tube (40), and the upper end of the telescopic tube (40) is equipped with an exhaust pipe (50).

9. A negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 8, characterized in that: The upper end of the negative pressure suction head (30) is fixed with a first flange (33), the upper and lower ends of the telescopic tube (40) are respectively fixed with second flanges (41), the lower end of the exhaust pipe (50) is fixed with a third flange (51), the first flange (33) is fitted with the second flange (41) at the lower end of the telescopic tube (40), the second flange (41) at the upper end of the telescopic tube (40) is fitted with the third flange (51), a plurality of screws (42) are arranged around the telescopic tube (40) and pass through the first flange (33), the second flange (41) and the third flange (51), the lower end of the screws (42) is connected to the first flange (33) and the lower end of the second flange (41) by two nuts (43), and the upper end of the screws (42) is connected to the upper end of the second flange (41) and the third flange (51) by two nuts (43).

10. A negative pressure conveying, cooling, and impurity removal system for tea refining according to claim 7 or 8, characterized in that: The upper end of the exhaust pipe (50) is equipped with a pneumatic conveying equipment separator (60).

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