A tea leaf cleaning and continuous production device

Abstract

The present application relates to the technical field of tea processing, and particularly relates to a tea clean and continuous production device, which comprises a machine body, a sieve screen arranged in the machine body, a motor arranged on the outside of the machine body, a discharging mechanism fixedly connected to the feeding end of the sieve screen, and a collecting mechanism arranged at the bottom of the discharging mechanism; the discharging mechanism comprises a discharging box fixedly connected to the feeding end of the machine body, the top wall of the discharging box is arranged as an inclined surface, the inside of the discharging box is provided with a discharging inclined plate, and the bottom of the discharging box is provided with a discharging pipe. The collecting mechanism is integrated with an air suction pump, a filter screen and an elastic air bag, an electromechanical triggering structure is formed by an elastic limiting ball, a movable rod, a conductive contact piece and a conductive seat in the air bag, and the electromechanical triggering structure is electrically connected with the air suction pump. Compared with the traditional continuous constant-power air suction structure, the present application can start and stop the equipment according to the accumulation amount of impurities, greatly reduce the operation energy consumption, avoid the filter screen blockage and dust raising, and long-term maintain the cleanliness in the tea collecting stage.

Description

Technical Field

[0001] This invention relates to the field of tea processing technology, and in particular to a clean and continuous tea production apparatus. Background Technology

[0002] In the initial processing of tea, screening and impurity removal, material conveying, and finished product collection are the core processes that determine the cleanliness, uniformity of appearance, and continuity of production. Currently, the screening and conveying devices used in large-scale tea production in China generally suffer from the following technical defects, hindering the improvement of clean, continuous, and intelligent tea processing: First, most existing tea screening equipment adopts a horizontal screen structure with equal aperture. The screening gradient is single during the material conveying process on the screen surface, and it is impossible to achieve graded screening according to the material conveying sequence. Large leaves, broken tea, tea dust and mud impurities cannot be separated step by step along the feeding direction, which easily leads to the problem of broken tea mixing and impurity residue. The finished tea has poor uniformity and the degree of cleanliness is difficult to meet the processing standards of refined tea.

[0003] Secondly, the unloading structure of traditional screening and conveying equipment is simple, and most of them adopt a direct-fall unloading channel. During the unloading process, tea materials are prone to splashing, rebounding, and stacking blockage. At the same time, there is no directional flow guidance structure in the unloading area, and the material at the end of the conveyor belt is prone to lateral deviation and leakage. This not only causes raw material loss, but the scattered tea chips and dust will also flow back into the screening machine, causing secondary pollution and damaging the cleanliness of tea processing.

[0004] Third, existing tea dust removal and impurity removal methods mostly adopt fixed negative pressure suction structures, with the suction pump running continuously at full load. It cannot adaptively adjust the start-up and shutdown and power according to the amount of tea debris and dust accumulation inside the collection box. Long-term continuous suction consumes a lot of energy, and when dust accumulates excessively, it can easily clog the filter screen, causing the negative pressure dust removal to fail. The accumulated dust is then raised again, contaminating the tea. The method of manually monitoring and cleaning the filter screen and starting and stopping the equipment interrupts the continuous operation of the production line, resulting in a low degree of automation.

[0005] Fourth, the existing screening equipment has poor matching between vibration excitation and conveying structure, insufficient coordination between vibrator, conveyor belt and screen, high material conveying resistance on inclined screen surface, easy material retention and local accumulation, further aggravating uneven screening, material blockage and impurity enrichment problems, and unable to achieve long-term stable continuous production.

[0006] In summary, existing technologies suffer from problems such as poor screening and grading effects, easy splashing and clogging during unloading, inability to adaptively control dust removal, insufficient cleanliness, weak stability in continuous production, and high energy consumption. There is an urgent need for a tea production device that can achieve gradient screening, anti-splash directional unloading, adaptive negative pressure dust removal, and continuous clean operation throughout the entire process. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a clean and continuous tea production device that solves the technical problems of poor screening and grading effects and easy splashing and clogging during unloading.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a clean and continuous tea production device, including a machine body, a screen inside the machine body, a motor outside the machine body, a discharge mechanism fixedly connected to the feeding end of the screen, and a collection mechanism at the bottom of the discharge mechanism. The unloading mechanism includes an unloading box fixedly connected to the feeding end of the machine body. The top wall of the unloading box is set as an inclined surface, the inside of the unloading box is provided with an unloading inclined plate, and the bottom of the unloading box is provided with an unloading pipe. A rotating rod is fixedly installed at the output end of the motor, and a conveyor belt is sleeved on the outside of the rotating rod. The end of the conveyor belt is provided with a discharge sloping plate.

[0009] Preferably, the collection mechanism includes a collection box fixedly connected to the bottom of the discharge pipe. An air pump is provided on the back side of the collection box. A filter screen is provided inside the collection box on the side near the air pump. An elastic air bladder is provided on the other side of the filter screen. An elastic limiting ball is provided inside the elastic limiting ball. A fixed seat is fixedly connected to the center of the elastic limiting ball. Movable rods are fixedly connected to both sides of the elastic limiting ball. A conductive contact is fixedly connected to the section of the movable rod away from the elastic limiting ball. A sliding groove is formed laterally from the center of the fixed seat. A conductive seat is fixedly connected to the center of the sliding groove.

[0010] Preferably, a vibrator is fixedly connected to the outer sidewall of the machine body.

[0011] Preferably, the conductive contact and the conductive base are electrically connected to the suction pump.

[0012] Preferably, the unloading box is provided with unloading baffles on both sides of the top.

[0013] Preferably, the screen is inclined along the feeding direction, and the screen openings gradually decrease along the feeding direction.

[0014] By employing the above technical solution, the present invention provides a clean and continuous tea production device, which has at least the following beneficial effects: 1. This invention uses a screen arranged at an angle along the feeding direction, with the screen aperture gradually decreasing in size. The tea material is conveyed forward along the inclined screen surface under its own weight and the vibration of the vibrator. Large-diameter tea leaves are retained in the front section, medium-diameter tea leaves are screened in the middle section, and fine tea dust and impurities are separated through the screen apertures in the rear section, forming a gradient grading screening logic. Compared to traditional screens with uniform apertures, this structure can accurately distinguish tea leaves of different sizes from impurities, reducing broken tea and impurity residue from the source, significantly improving the uniformity of the finished tea and the utilization rate of raw materials.

[0015] 2. This invention integrates an air pump, a filter screen, and an elastic airbag into a collection mechanism. The airbag's internal elastic limiting ball, movable rod, conductive contact plate, and conductive base form an electromechanical triggering structure, which is electrically linked to the air pump. Compared to the traditional continuous constant power air suction structure, this invention can adaptively start and stop the equipment according to the amount of impurities accumulated, significantly reducing operating energy consumption. At the same time, it avoids filter screen clogging and dust raising, effectively maintaining the cleanliness of the tea collection stage for a long time. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a schematic diagram of the elastic airbag structure after compression according to the present invention.

[0017] In the diagram: 1. Machine body; 2. Screen; 3. Motor; 31. Rotating rod; 32. Conveyor belt; 4. Discharge baffle; 5. Unloading mechanism; 50. Unloading box; 51. Unloading ramp; 52. Unloading pipe; 6. Collection mechanism; 60. Collection box; 61. Air pump; 62. Filter screen; 63. Elastic airbag; 64. Elastic limit ball; 65. Fixed seat; 66. Movable rod; 67. Conductive contact piece; 68. Conductive seat; 7. Vibrator. Detailed Implementation

[0018] 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 some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1

[0020] Please refer to Figures 1-4 A clean and continuous tea production device includes a machine body 1, a screen 2 inside the machine body 1, a motor 3 on the outside of the machine body 1, a discharge mechanism 5 fixedly connected to the feeding end of the screen 2, and a collection mechanism 6 at the bottom of the discharge mechanism 5, realizing integrated continuous operation of tea screening, conveying, unloading, dust removal and sealed collection. The unloading mechanism 5 includes an unloading box 50 fixedly connected to the feeding end of the machine body 1. The top wall of the unloading box 50 is set as an inclined surface. An unloading inclined plate 51 is provided inside the unloading box 50. An unloading pipe 52 is provided through the bottom of the unloading box 50. A rotating rod 31 is fixedly installed at the output end of motor 3. A conveyor belt 32 is sleeved on the outside of the rotating rod 31. A discharge inclined plate 51 is provided at the end of the conveyor belt 32. Motor 3 is fixed to the lower part of the outer side of machine body 1 by motor support. The rotating rod 31 is coaxially fixedly installed at the output end of motor 3. The rotating rod 31 cooperates with the driven rotating shaft on the other side of machine body 1 to form a transmission roller group. The rotating rod 31 and the driven rotating shaft are sleeved together on the outer side of the annular conveyor belt 32. The conveyor belt 32 is arranged close to the screen 2 to receive and convey the screened tea material forward. The conveyor belt 32 is made of food-grade silicone material with anti-slip micro-protrusions on the surface to prevent tea from slipping and accumulating. The collection mechanism 6 includes a collection box 60 fixedly connected to the bottom of the discharge pipe 52. An air pump 61 is provided on the back side of the collection box 60. A filter screen 62 is provided inside the collection box 60 on the side near the air pump 61. An elastic airbag 63 is provided on the other side of the filter screen. The airbag is made of highly elastic food-grade rubber and filled with low-pressure inert gas. It can undergo elastic deformation under the pressure of dust accumulation and automatically rebounds to its original position after the external force is removed. An elastic limiting ball 64 is provided inside the elastic limiting ball 64. A fixed seat 65 is fixedly connected to the center of the elastic limiting ball 64. Movable rods 67 are fixedly connected to both sides of the elastic limiting ball 64. A conductive contact 67 is fixedly connected to the section of the movable rod 67 away from the elastic limiting ball 64. A groove is horizontally formed at the center of the fixed seat 65. A conductive seat 68 is fixedly connected to the center of the groove.

[0021] As a preferred technical solution in this embodiment, a vibrator 7 is fixedly connected to the outer side wall of the machine body 1. Under the vibration excitation of the vibrator 7 and its own gravity, the tea material automatically slides forward and is conveyed along the screen 2. As a preferred technical solution in this embodiment, the conductive contact 67 and the conductive base 68 are electrically connected to the suction pump 61. The conductive contact 67 and the conductive base 68 are connected to the device's electrical control circuit via shielded wires to form a linkage control circuit. The overall circuit is set to a normally open mode: initially, the conductive contact is separated from the conductive base, and the suction pump is in a standby low-power state; when the contact is closed, the suction pump starts at full power. As a preferred technical solution in this embodiment, the top two sides of the unloading box 50 are provided with unloading baffles 4. The two sets of unloading baffles 4 extend upward and cover the area on both sides of the end of the conveyor belt 32 to form a lateral enclosure structure, which completely prevents the tea material from splashing and leaking to both sides, thus structurally eliminating the problems of raw material loss and dust overflow during the unloading stage. As a preferred technical solution in this embodiment, the screen 2 is inclined along the feeding direction, and the screen holes of the screen 2 gradually decrease along the feeding direction. Large-volume whole tea leaves are retained in the front section of the screen 2, medium-sized tea leaves are screened in the middle section, and fine tea dust, debris and mud impurities can be leaked downward through the smaller screen holes in the rear section, so as to achieve gradient grading screening.

[0022] When this device is working, the motor 3 and the vibrator 7 are started first. The motor 3 drives the rotating rod 31 to drive the conveyor belt 32 to rotate in a cycle. The vibrator 7 drives the inclined variable aperture screen 2 to vibrate at a high frequency. The tea leaves to be processed fall from the upper feed end of the machine body 1 onto the surface of the screen 2. Under the action of vibration and gravity, they slide forward along the screen surface and are graded and screened by relying on the gradient screen holes. Impurities and broken tea leaves leak downwards, and qualified tea leaves are conveyed to the end by the conveyor belt 32.

[0023] After the tea leaves are conveyed to the end of the conveyor belt 32, they are limited by the unloading inclined plate 53 and fall into the unloading box 50. They are then guided and buffered by the inclined surface of the top wall and the unloading inclined plate 51, and then sealed into the collection box 60 below through the unloading pipe 52. The material is blocked from lateral splashing by the side baffles 4 throughout the process, ensuring the cleanliness of the unloading.

[0024] As tea leaves accumulate in the collection box 60, the resulting floating dust gradually gathers on the outside of the filter screen 62. When the amount of dust accumulation reaches a preset threshold, the weight of the dust compresses the elastic airbag 63, causing it to deform inward. This causes the movable rod 67 inside the elastic limiting ball 64 to slide towards the center, making the conductive contact 66 contact the conductive seat 68 in the sliding groove to conduct the circuit. The suction pump 61 is then energized and starts, generating negative pressure to adsorb and intercept the floating dust and fine tea leaves in the collection box onto the filter screen 62.

[0025] Once the dust has been adsorbed and removed, and the accumulated pressure has decreased, the elastic airbag 63 automatically rebounds, causing the movable rod to reset. The conductive contact plate disconnects from the conductive base, and the suction pump automatically switches to a low-power standby state. This cycle repeats, enabling adaptive start and stop of dust removal based on the amount of dust accumulation, without any manual intervention throughout the process.

[0026] The entire process of screening, conveying, unloading, adaptive dust removal, and finished product collection operates continuously without any production interruptions. At the same time, the fully enclosed structure eliminates secondary dust pollution, ultimately achieving clean, continuous, and automated production and processing of tea.

[0027] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Since the above embodiments are substantially similar to the method embodiments, their descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A clean and continuous tea production device, comprising a body (1), characterized in that: The machine body (1) is equipped with a screen (2) inside and a motor (3) is provided on the outside of the machine body (1). The feeding end of the screen (2) is fixedly connected to a discharge mechanism (5), and a collection mechanism (6) is provided at the bottom of the discharge mechanism (5). The unloading mechanism (5) includes an unloading box (50) fixedly connected to the feeding end of the machine body (1). The top wall of the unloading box (50) is set as an inclined surface. An unloading inclined plate (51) is provided inside the unloading box (50). An unloading pipe (52) is provided through the bottom of the unloading box (50). The output end of the motor (3) is fixedly equipped with a rotating rod (31), and a conveyor belt (32) is sleeved on the outside of the rotating rod (31). The end of the conveyor belt (32) is provided with a discharge sloping plate (51).

2. The clean and continuous tea production apparatus according to claim 1, characterized in that: The collection mechanism (6) includes a collection box (60) fixedly connected to the bottom of the discharge pipe (52). An air pump (61) is provided on the back side of the collection box (60). A filter screen (62) is provided on the side of the collection box (60) near the air pump (61), and an elastic airbag (63) is provided on the other side of the filter screen.

3. The clean and continuous tea production apparatus according to claim 1, characterized in that: The elastic airbag (63) has an elastic limiting ball (64) inside, and a fixed seat (65) is fixedly connected to the center of the elastic limiting ball (64). Movable rods (67) are fixedly connected to both sides of the elastic limiting ball (64).

4. The clean and continuous tea production apparatus according to claim 1, characterized in that: The section of the movable rod (67) away from the elastic limiting ball (64) is fixedly connected to a conductive contact (67), and the center of the fixed seat (65) has a horizontal groove, and a conductive seat (68) is fixedly connected at the center of the groove.

5. The clean and continuous tea production apparatus according to claim 1, characterized in that: A vibrator (7) is fixedly connected to the outer side wall of the machine body (1).

6. The clean and continuous tea production apparatus according to claim 4, characterized in that: The conductive contact (67) and conductive base (68) are electrically connected to the suction pump (61).

7. The clean and continuous tea production apparatus according to claim 1, characterized in that: The unloading box (50) is provided with unloading baffles (4) on both sides of the top.

8. The clean and continuous tea production apparatus according to claim 1, characterized in that: The screen (2) is inclined along the feeding direction, and the screen holes gradually decrease along the feeding direction.

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