Tea powder collecting device for fresh tea leaf processing

Abstract

The application discloses a tea powder collecting device for fresh and wet tea processing, and relates to the technical field of tea powder processing.The device comprises a cyclone separator, a cloth bag dust collector and a hot air source.The cyclone separator comprises a separator body, an air inlet pipe and an air outlet pipe.The bottom of the cloth bag dust collector is connected with a collecting box, and the input end of the cloth bag dust collector is in communication with the air outlet pipe of the cyclone separator.The bottom outlet of the cyclone separator is in communication with the collecting box through a discharge pipe.The hot air source is in communication with the cyclone separator through a first hot air pipe, and is used for conveying hot air into the cyclone separator to vaporize liquid water into water vapor.During the process of separating tea powder by the cyclone separator, the hot air generated by the hot air source enters the cyclone separator through the first hot air pipe, so that the liquid droplets in the airflow are vaporized into water vapor, preventing water from being combined on the tea powder.The cyclone separator separates tea powder with a large particle size, thereby reducing the concentration of tea powder entering the cloth bag dust collector, and effectively preventing the cloth bag dust collector from being blocked.

Description

Technical Field

[0001] This application relates to the field of tea powder processing technology, and in particular to a tea powder collection device for processing fresh wet tea leaves. Background Technology

[0002] In the tea powder production process, after the tea leaves are pulverized using an air mill, a bag filter is typically used to collect the tea powder. However, when the wet tea leaves containing moisture are impacted and pulverized by a high-speed airflow, the cell structure of the tea leaves is destroyed, and the internal moisture is released instantly. Under the powerful shearing force and high-speed airflow, this released liquid water is not immediately and completely vaporized, but is atomized into extremely tiny droplets.

[0003] Therefore, in the gas-solid two-phase flow discharged from the grinding chamber, the main form of moisture is "mist-like" liquid droplets dispersed in the airflow and mixed with tea powder particles, and the airflow also contains a certain amount of water vapor.

[0004] Tea powder and water droplets have similar particle sizes: whether it is tea slurry droplets produced by wet grinding or water mist produced by crushing wet tea leaves, the droplet size is very close to that of ultrafine tea powder (usually in the micrometer range).

[0005] Ultrafine tea powder has a huge specific surface area, which strongly adsorbs moisture and makes it easy to agglomerate.

[0006] Due to the two points mentioned above, simple physical filtration (such as bag filters) cannot effectively separate tea powder and moisture droplets. Instead, it can cause the filter bag to become clogged with wet powder, and even prevent the equipment from working properly. Summary of the Invention

[0007] In order to reduce the moisture content of tea powder and prevent filter bag clogging, this application provides a tea powder collection device for processing fresh wet tea leaves.

[0008] This application provides a tea powder collection device for processing fresh wet tea leaves, which adopts the following technical solution: A tea powder collection device for processing fresh wet tea leaves includes a cyclone separator, a bag filter, and a hot air source; the cyclone separator includes a separator body, an inlet pipe, and an outlet pipe, and the airflow direction of the inlet pipe is tangential to the separator body. The bottom of the bag filter is connected to a collection box for collecting tea powder, and the input end of the bag filter is connected to the outlet pipe of the cyclone separator. The bottom outlet of the cyclone separator is connected to the collection box via a discharge pipe; The hot air source is connected to the cyclone separator through a first hot air pipe, and is used to deliver hot air into the cyclone separator to vaporize liquid water into water vapor.

[0009] Optionally, the bag filter includes a housing and a bag filter cylinder. The top of the housing is connected to an exhaust pipe for communicating with the bag filter cylinder, and an air blowing assembly for blowing air into the bag filter cylinder is provided inside the housing.

[0010] Optionally, the air blowing assembly includes an air blowing pipe and a second hot air pipe. The air blowing pipe is vertically fixed inside the housing and is arranged along the axial direction of the bag filter cylinder. The air blowing pipe has several air holes near the side wall of the bag filter cylinder. One end of the second hot air pipe is connected to the air blowing pipe, and the other end is connected to the hot air source.

[0011] Optionally, the bag filter cylinder is rotatably mounted on the top wall of the housing. The bag filter cylinder is provided with fins, and multiple fins are spaced apart along the circumference of the bag filter cylinder. The airflow blown out by the air holes can act on the fins to drive the bag filter cylinder to rotate.

[0012] Optionally, an installation ring is fixedly inserted through the top wall of the housing, the installation ring is connected to the exhaust pipe, and the bag filter is rotatably connected to the installation ring.

[0013] Optionally, the top of the bag filter cylinder is inserted into the mounting ring, and a bearing is provided between the bag filter cylinder and the mounting ring.

[0014] Optionally, the hot air source includes a gas source and a heater, the output end of the gas source is connected to a gas pipe, and the heater is connected to the gas pipe for heating the gas inside the gas pipe.

[0015] Optionally, the inner wall of the cyclone separator is provided with a smooth layer.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. During operation, the pulverized tea powder, along with the airflow, enters the cyclone separator through the air inlet pipe, forming a vortex. Under the action of centrifugal force, the tea powder separates from the gas. The tea powder gradually slides to the bottom of the cyclone separator and enters the collection box through the discharge pipe. Meanwhile, some tea powder with a very small particle size, due to its light weight, enters the bag filter through the air outlet pipe along with the airflow. After further separation, it enters the collection box.

[0017] During the process of separating tea powder by the cyclone separator, the hot air generated by the hot air source enters the cyclone separator through the first hot air pipe and mixes with the airflow entering through the air inlet pipe. This causes the liquid droplets in the airflow to be vaporized into water vapor, preventing moisture from binding to the tea powder. The cyclone separator separates the tea powder with larger particle size, thereby reducing the concentration of tea powder entering the bag filter and effectively preventing the bag filter cylinder from being blocked.

[0018] 2. The hot air generated by the hot air source passes through the second hot air pipe and the air blowing pipe in sequence, and is discharged from the air hole. The wind force acts on the fins, driving the bag dust collector to rotate, so that the hot air can cover the entire surface of the bag dust collector. On the one hand, it can dry the bag dust collector, and on the other hand, it can clean the tea powder clogging the surface of the bag dust collector. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram illustrating the structure of a bag filter, which is the main embodiment of this application. Figure 3 This is an embodiment of the present application. Figure 2 Enlarged view of part A in the image; Figure 4 This is a schematic diagram illustrating the installation structure of the air blowing pipe and the bag filter cylinder, which is the main embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Cyclone separator; 11. Separator body; 12. Inlet pipe; 13. Outlet pipe; 14. Discharge pipe; 2. Bag filter; 21. Shell; 211. Mounting ring; 22. Bag filter cylinder; 221. Fin; 222. Fixing ring; 23. Exhaust pipe; 3. Collection box; 4. Hot air source; 41. Air source; 421. Heating tube; 422. Heating module; 5. First hot air pipe; 61. Air blowing pipe; 611. Air blowing hole; 62. Second hot air pipe; 7. Connecting sleeve; 71. Bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0025] This application discloses a tea powder collection device for processing fresh wet tea leaves.

[0026] Reference Figure 1 A tea powder collection device for processing fresh wet tea leaves includes a cyclone separator 1 and a bag filter 2. The cyclone separator 1 includes a separator body 11, an air inlet pipe 12, and an air outlet pipe 13. The airflow direction of the air inlet pipe 12 is tangential to the separator body 11, and the separator body 11 is generally conical. In this embodiment, the tea leaves are crushed by a crushing device, such as an air mill. After the tea leaves are crushed, the tea powder and airflow enter the cyclone separator 1 through the air inlet pipe 12 to form a cyclone, thereby separating the tea powder and the gas.

[0027] The inner wall of the cyclone separator 1 is provided with a smooth layer, which is a polytetrafluoroethylene layer, to reduce the friction of the inner wall of the cyclone separator 1.

[0028] Reference Figure 1 and Figure 2The bottom of the bag filter 2 is connected to a collection box 3 for collecting tea powder. The input end of the bag filter 2 is connected to the outlet pipe 13 of the cyclone separator 1. The bag filter 2 includes a housing 21 and a bag filter cylinder 22. The bag filter cylinder 22 includes a filter cloth, which can be made of polytetrafluoroethylene to reduce the adsorption of powder. The top of the housing 21 is connected to an exhaust pipe 23 for communicating with the bag filter cylinder 22. In this embodiment, only one bag filter cylinder 22 is provided. Since some tea powder is separated by the cyclone separator 1, the tea powder content entering the bag filter 2 is greatly reduced. Therefore, it is not necessary to provide multiple bag filter cylinders 22 to meet the needs of tea powder separation, while reducing the number of bag filter cylinders 22 and reducing maintenance costs.

[0029] Reference Figure 2 The bottom outlet of the cyclone separator 1 is connected to the collection box 3 via a discharge pipe 14. The discharge pipe 14 is inclined downward and has a smooth inner wall to facilitate the tea powder falling smoothly into the collection box 3. In this embodiment, a valve is provided at the bottom of the collection box 3. Opening the valve allows the tea powder in the collection box 3 to be discharged.

[0030] Reference Figure 1 It also includes a hot air source 4, which is connected to the cyclone separator 1 through a first hot air pipe 5, and is used to supply hot air into the cyclone separator 1 to vaporize liquid water into water vapor. The direction of the hot air velocity entering the cyclone separator 1 through the first hot air pipe 5 is tangential to the cyclone separator 1, and is offset from the airflow direction of the air inlet pipe 12, so that the airflow of both rotates in the same direction.

[0031] In one specific embodiment, the hot air source 4 includes a gas source 41 and a heater. The output end of the gas source 41 is connected to a gas pipe, and the heater is connected to the gas pipe to heat the gas inside the gas pipe. The heater includes a heating tube 421 and a heating module 422. The heating module 422 is disposed inside the heating tube 421. The gas pipe is connected to the output end of the heating tube 421. After the gas enters the heating tube 421, it comes into contact with the heating module 422, causing the gas temperature to rise, and then the hot air is discharged through the output end of the heating tube 421. The gas source 41 can be a gas tank or a gas pump that stores gas. The gas tank can contain air or a gas such as nitrogen.

[0032] Furthermore, the heating module 422 can be a heating wire and is electrically connected to an external power supply. To control the gas temperature and prevent it from becoming too high, a temperature sensor and a controller are provided. The temperature sensor detects the gas temperature, and when the gas temperature exceeds a threshold, the controller controls the power supply to reduce the power of the heating wire. Since the temperature inside the grinding chamber during actual tea grinding is typically 40℃-50℃, the threshold temperature set in this embodiment is 55℃-60℃ to prevent the tea powder from becoming too dry.

[0033] Reference Figure 2 and Figure 4 The housing 21 is equipped with an air blowing assembly for blowing air into the bag filter 22. The air blowing assembly includes an air blowing pipe 61 and a second hot air pipe 62. The air blowing pipe 61 is vertically fixed inside the housing 21 and is arranged along the axial direction of the bag filter 22. The air blowing pipe 61 has several air holes near the side wall of the bag filter 22, and these air holes are spaced apart along the length of the air blowing pipe 61. The diameter of the air holes 611 gradually increases from the end near the inner wall of the air blowing pipe 61 towards the outer wall of the air blowing pipe 61, so that the blown airflow is in a divergent shape to increase the area covered by the bag filter 22. One end of the second hot air pipe 62 is connected to the air blowing pipe 61, and the other end is connected to the hot air source 4.

[0034] Optionally, refer to Figure 2 and Figure 4 The bag filter 22 is rotatably mounted on the top wall of the housing 21. Fins 221 are provided on the bag filter 22, with multiple fins 221 spaced apart along the circumference of the bag filter 22. The airflow from the vents acts on the fins 221 to drive the bag filter 22 to rotate. Hot air generated by the hot air source 4 passes sequentially through the second hot air pipe 62 and the air blowing pipe 61, and is discharged from the vents. The airflow acts on the fins 221, driving the bag filter 22 to rotate, allowing the hot air to cover the entire surface of the bag filter 22. This serves to dry the bag filter 22 and simultaneously remove tea powder clogging its surface.

[0035] Reference Figure 2 and Figure 3 An installation ring 211 is fixedly inserted through the top wall of the housing 21. The installation ring 211 is connected to the exhaust pipe 23, and the bag filter 22 is rotatably connected to the installation ring 211. The top of the bag filter 22 is inserted into the installation ring 211, and a bearing 71 is provided between the bag filter 22 and the installation ring 211.

[0036] Specifically, a fixing ring 222 is fixedly installed on the top of the bag dust collector 22. A connecting sleeve 7 is fixedly connected to the fixing ring 222 by bolts. A bearing 71 is fixedly sleeved on the connecting sleeve 7. The outer ring of the bearing 71 is inserted into the mounting ring 211.

[0037] The implementation principle of this application embodiment is as follows: During operation, the pulverized tea powder, along with the airflow, enters the cyclone separator 1 through the air inlet pipe 12, forming a vortex. Under the action of centrifugal force, the tea powder separates from the gas, and the tea powder gradually slides to the bottom of the cyclone separator 1 and enters the collection box 3 through the discharge pipe; while some of the tea powder with a small particle size, due to its light weight, enters the bag filter 2 along with the airflow through the air outlet pipe 13, and enters the collection box 3 after further separation.

[0038] During the process of separating tea powder by the cyclone separator 1, the hot air generated by the hot air source 4 enters the cyclone separator 1 through the first hot air pipe 5 and mixes with the airflow entering through the air inlet pipe 12, so that the liquid droplets in the airflow are vaporized into water vapor, preventing moisture from binding to the tea powder; the cyclone separator 1 separates the tea powder with larger particle size, thereby reducing the concentration of tea powder entering the bag dust collector 2, effectively preventing the bag dust collector cylinder 22 in the bag dust collector 2 from being blocked.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tea powder collection device for processing fresh wet tea leaves, characterized in that, It includes a cyclone separator (1), a bag filter (2), and a hot air source (4); the cyclone separator (1) includes a separator body (11), an air inlet pipe (12), and an air outlet pipe (13), and the airflow direction of the air inlet pipe (12) is the tangential direction of the separator body (11); The bottom of the bag filter (2) is connected to a collection box (3) for collecting tea powder, and the input end of the bag filter (2) is connected to the air outlet pipe (13) of the cyclone separator (1). The bottom outlet of the cyclone separator (1) is connected to the collection box (3) through a discharge pipe; The hot air source (4) is connected to the cyclone separator (1) through the first hot air pipe (5) and is used to deliver hot air into the cyclone separator (1) to vaporize liquid water into water vapor.

2. The tea powder collection device for processing fresh wet tea leaves according to claim 1, characterized in that, The bag filter (2) includes a housing (21) and a bag filter cylinder (22). The top of the housing (21) is connected to an exhaust pipe (23) for communicating with the bag filter cylinder (22). An air blowing assembly for blowing air into the bag filter cylinder (22) is provided inside the housing (21).

3. A tea powder collection device for processing fresh wet tea leaves according to claim 2, characterized in that, The air blowing assembly includes an air blowing pipe (61) and a second hot air pipe (62). The air blowing pipe (61) is vertically fixed inside the housing (21) and is arranged along the axial direction of the bag filter cylinder (22). The air blowing pipe (61) has several air holes on the side wall near the bag filter cylinder (22). One end of the second hot air pipe (62) is connected to the air blowing pipe (61), and the other end is connected to the hot air source (4).

4. A tea powder collection device for processing fresh wet tea leaves according to claim 3, characterized in that, The bag filter cylinder (22) is rotatably mounted on the top wall of the housing (21). The bag filter cylinder (22) is provided with fins (221). Multiple fins (221) are spaced apart along the circumference of the bag filter cylinder (22). The airflow blown out by the air hole (611) can act on the fins (221) to drive the bag filter cylinder (22) to rotate.

5. A tea powder collection device for processing fresh wet tea leaves according to claim 4, characterized in that, An installation ring (211) is fixedly inserted through the top wall of the housing (21), the installation ring (211) is connected to the exhaust pipe (23), and the bag dust collector (22) is rotatably connected to the installation ring (211).

6. The tea powder collection device for processing fresh wet tea leaves according to claim 5, characterized in that, The top of the bag filter cylinder (22) is inserted into the mounting ring (211), and a bearing (71) is provided between the bag filter cylinder (22) and the mounting ring (211).

7. A tea powder collection device for processing fresh wet tea leaves according to claim 1, characterized in that, The hot air source (4) includes an air source (41) and a heater. The output end of the air source (41) is connected to an air pipe, and the heater is connected to the air pipe to heat the gas inside the air pipe.

8. The tea powder collection device for processing fresh wet tea leaves according to claim 1, characterized in that, The inner wall of the cyclone separator (1) is provided with a smooth layer.

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