Quantitative tea boxing equipment

Abstract

The invention provides quantitative tea boxing equipment which comprises a feeding conveyor, a negative-pressure conveyor and a negative-pressure pump. A feeding hopper with an opening in the lower end is arranged on the upper portion of one end of the feeding conveyor. The negative pressure conveyor comprises a conveying frame, a strip-shaped negative pressure shell arranged in the conveying frame, driving shafts located at the two ends of the strip-shaped negative pressure shell respectively, a porous conveying belt and a driving motor, the strip-shaped negative pressure shell and the two driving shafts are sleeved with the porous conveying belt, and the driving motor is used for driving the driving shafts to rotate. The lower end of the strip-shaped negative pressure shell is divided into a negative pressure section with a negative pressure hole and a hole-free blanking section; a weighing channel is downwards arranged at the junction of the negative pressure section and the blanking section, a supporting plate is hinged in the weighing channel, and a weighing disc capable of blocking the weighing channel is connected above the supporting plate through a weighing sensor. When the tea leaf packaging device is used for packaging tea leaves, interwoven tea leaves are effectively separated in a negative pressure suction mode, and the tea leaf packaging device is suitable for efficient and accurate packaging of the interwoven tea leaves.

Description

Technical Field

[0001] The invention belongs to the technical field of tea processing and relates to a quantitative tea box packing device. Background Art

[0002] With the continuous development of the tea market and the improvement of consumers' requirements for product quality, tea packaging technology is also constantly improving. As a special agricultural product, tea packaging not only needs to protect tea from external environmental factors (such as oxygen, humidity, light, etc.) to ensure the freshness and flavor of tea, but also needs to meet the needs of accurate weighing and quantitative packaging to meet market regulations and consumer expectations. Although the traditional manual packaging method can guarantee a certain packaging quality, it has significant deficiencies in efficiency and cost, and it is difficult to adapt to the needs of large-scale production.

[0003] In order to solve these problems and improve packaging efficiency, many companies have begun to use automated packaging equipment to weigh and quantitatively package tea. These automated equipment usually outputs tea evenly by vibration or shaking, and automatically weighs and packages tea during the transportation process. This method is very effective for tea types with more regular shapes and better separation, and can significantly improve packaging speed and accuracy.

[0004] However, for certain types of tea, such as clear tea and white tea, the surface of the tea leaves is covered with a lot of hair, which makes it easy for the tea leaves to intertwine and form clumps, making it much more difficult to separate them. When using traditional vibration-type automatic packaging equipment to process such tea leaves, it is often impossible to effectively separate the tea leaves, resulting in inaccurate weighing, unstable packaging volume, and other problems, which seriously affects the quality and market competitiveness of the final product. Summary of the invention

[0005] The purpose of the present invention is to provide a tea quantitative box packing device, which can effectively separate intertwined tea leaves by negative pressure suction when packaging tea leaves, and is suitable for efficient and accurate packaging of intertwined tea leaves.

[0006] In order to solve the above technical problems, the present invention provides a quantitative tea box packing device, comprising a feeding conveyor, a feeding hopper opened at the lower end is arranged on the upper part of one end of the feeding conveyor, and also comprising a negative pressure conveyor and a negative pressure pump, wherein the negative pressure conveyor comprises a conveying frame arranged along the length direction of the feeding conveyor and opened at the lower end, a strip-shaped negative pressure shell arranged in the conveying frame and hollow, a driving shaft respectively located at both ends of the strip-shaped negative pressure shell and rotatably connected to the conveying frame, a porous conveying belt sheathed with the strip-shaped negative pressure shell and the two driving shafts, and a driving motor for driving the driving shaft to rotate, the strip-shaped negative pressure shell is connected with the inlet end of the negative pressure pump through a negative pressure pipe, the negative pressure conveyor is located above the feeding conveyor and partially extends outward in a direction away from the feeding hopper, the lower end of the strip-shaped negative pressure shell is divided into a negative pressure section with a negative pressure hole and a blanking section without holes, and the negative pressure section partially extends out of the feeding conveyor;

[0007] A weighing channel is arranged downward at the junction of the negative pressure section and the blanking section, a driving groove is arranged outward from the middle of the weighing channel, a support plate capable of vertical rotation is hinged at the intersection of the weighing channel and the driving groove, an electric telescopic rod is rotatably connected between the lower side of the support plate and the inner wall of the driving groove, a weighing sensor is arranged at the upper end of the support plate, and a weighing pan capable of blocking the weighing channel is connected above the support plate through the weighing sensor.

[0008] By adopting the above technical scheme, when packaging tea, first add tea into the feeding hopper, and the feeding conveyor at the bottom drives the tea in the feeding hopper to move toward the negative pressure conveyor. When it moves to the negative pressure conveyor position, the negative pressure pump generates negative pressure in the strip negative pressure shell, and the negative pressure section of the strip negative pressure shell generates negative pressure so that the tea on the feeding conveyor is adsorbed by the negative pressure to the porous conveyor belt, and moves toward the blanking section along with the porous conveyor belt. When the tea moves to the blanking section, since there is no negative pressure hole to provide negative pressure, the tea falls into the weighing channel here, and continuously accumulates on the weighing plate in the weighing channel. The weighing sensor monitors the weight of the tea thereon in real time. When the set weight is reached, the electric telescopic rod is shortened until the weighing plate rotates downward to a horizontal position. At this time, the tea falls from the weighing plate and finally falls into the packaging box below through the weighing channel.

[0009] The present invention is further configured such that a baffle in contact with the feeding hopper is provided above the conveyor belt of the feeding conveyor at one end of the feeding conveyor away from the feeding hopper, the feeding hopper is in contact with the conveyor belt of the feeding conveyor below the end of the feeding hopper away from the baffle, and a discharge gap is left between the feeding hopper below the end of the feeding hopper close to the baffle and the conveyor belt of the feeding conveyor.

[0010] The present invention is further configured such that the lower end of the weighing channel is connected to a downwardly disposed feed pipe.

[0011] The present invention is further configured such that a boxing conveyor is provided below the weighing channel.

[0012] The present invention is further configured such that a photoelectric sensor transmitter and a photoelectric sensor receiver are respectively provided on both sides of the cartoning conveyor directly below the weighing channel.

[0013] The present invention is further configured such that the upper portion of the weighing channel is approximately V-shaped.

[0014] The present invention is further configured such that the weighing pan is concave downwards in a groove shape.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, the present invention adopts a negative pressure suction method to replace the existing shaking method to output tea leaves. Through the strong negative pressure effect, the tea leaves are adsorbed one by one onto the porous conveyor belt, and the tea leaves can be extracted from the intertwined state by negative pressure. Compared with the shaking conveying method, it is more suitable for the efficient packaging of intertwined tea leaves;

[0017] Secondly, the present invention weighs the tea leaves in real time on a weighing plate in a weighing channel after they are separated and transported. When the required weight is reached, the weighing plate is directly turned over to pour the tea leaves into a packaging box, thereby facilitating accurate quantitative packaging of the tea leaves by weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 Used to demonstrate the connection between the feed conveyor and the hopper;

[0020] Figure 3 It is a partial cross-sectional view used to show the internal structure of the negative pressure conveyor;

[0021] Figure 4 It is a partial cross-sectional view used to show the internal structure of the weighing channel;

[0022] Figure 5 Used to demonstrate the load cell between the support plate and the weighing pan.

[0023] Among them, 1. feed conveyor; 11. baffle; 12. discharge gap; 2. feeding hopper; 3. negative pressure conveyor; 31. conveying frame; 32. strip negative pressure shell; 33. driving shaft; 34. porous conveyor belt; 35. driving motor; 36. negative pressure hole; 4. negative pressure pump; 41. negative pressure pipe; 5. weighing channel; 51. discharge pipe; 52. driving groove; 6. support plate; 61. weighing sensor; 62. weighing plate; 7. electric telescopic rod; 8. boxing conveyor; 81. photoelectric sensor transmitter; 82. photoelectric sensor receiver. DETAILED DESCRIPTION

[0024] The following is a further detailed description of a tea quantitative box packing device proposed by the present invention in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0025] Example, see Figure 1-5 A tea quantitative boxing device comprises a feeding conveyor 1, wherein a feeding hopper 2 with an opening at the lower end is arranged on the upper part of one end of the feeding conveyor 1, and a baffle 11 in contact with the feeding hopper is arranged above the conveyor belt of the feeding conveyor 1 at the end of the feeding conveyor 1 away from the feeding hopper 2 to prevent tea from falling from the free end of the feeding conveyor 1, and the lower part of the end of the feeding hopper 2 away from the baffle 11 contacts the conveyor belt of the feeding conveyor 1, and a discharge gap 12 is left between the lower part of the end of the feeding hopper 2 close to the baffle 11 and the conveyor belt of the feeding conveyor 1, so that the feeding conveyor 1 can drive the tea in the feeding hopper 2 to be continuously transported forward when working. When the tea is transported to the position of the baffle 11, the tea in the feeding hopper 2 is not easily brought out from the discharge gap 12 due to the obstruction of the baffle 11.

[0026] The negative pressure conveyor 3 also includes a negative pressure conveyor 3 and a negative pressure pump 4. The negative pressure conveyor 3 includes a conveying frame 31 arranged along the length direction of the feed conveyor 1 and having an opening at the lower end, a hollow strip-shaped negative pressure shell 32 arranged in the conveying frame 31, two drive shafts 33 respectively located at both ends of the strip-shaped negative pressure shell 32 and rotatably connected to the conveying frame 31, a porous conveyor belt 34 covered with the strip-shaped negative pressure shell 32 and the two drive shafts 33, a drive motor 35 for driving the drive shaft 33 to rotate, and a power output shaft of the drive motor 35. The strip negative pressure shell 32 is connected to one end of one of the driving motors 35, and is connected to the inlet end of the negative pressure pump 4 through a negative pressure pipe 41. The negative pressure conveyor 3 is located above the feeding conveyor 1 and partially extends outward away from the feeding hopper 2. The lower end of the strip negative pressure shell 32 is divided into a negative pressure section with a negative pressure hole 36 and a blanking section without holes. The negative pressure hole 36 is a strip hole in the length direction of the vertical conveying frame 31. The negative pressure section partially extends out of the feeding conveyor 1, so that the tea leaves can be transported to the outside of the feeding conveyor 1 by the porous conveyor belt 34.

[0027] A weighing channel 5 is arranged downward at the junction of the negative pressure section and the blanking section. The upper part of the weighing channel 5 is approximately V-shaped, which increases the blanking area of ​​the tea leaves and prevents the tea leaves from falling out. The lower end of the weighing channel 5 is connected with a downwardly arranged blanking pipe 51. A driving groove 52 is arranged outwardly in the middle of the weighing channel 5. A support plate 6 that can rotate vertically is hinged at the intersection of the weighing channel 5 and the driving groove 52. An electric telescopic rod 7 is rotatably connected between the lower side of the support plate 6 and the inner wall of the driving groove 52. The electric telescopic rod 7 can rotate the support plate 6 to horizontal or vertical by telescoping. Two weighing sensors 61 are arranged on the upper end of the support plate 6. A weighing pan 62 that can block the weighing channel 5 is connected above the support plate 6 through the two weighing sensors 61. The weighing pan 62 is concave downward and is groove-shaped. It is blocked in the weighing channel 5 by the weighing pan 62. After the tea leaves fall on it, their weight can be quickly obtained through the weighing sensor 61.

[0028] A cartoning conveyor 8 is arranged below the weighing channel 5. A photoelectric sensor transmitter 81 and a photoelectric sensor receiver 82 are respectively arranged on both sides of the cartoning conveyor 8 just below the weighing channel 5. The photoelectric sensor transmitter 81 and the photoelectric sensor receiver 82 cooperate to sense whether there is an object passing through the middle. When it is detected that a box body reaches between the two, tea leaves are added to the box body.

[0029] Working principle: When packaging tea, first add tea into the feeding hopper 2, and the feeding conveyor 1 at the bottom drives the tea in the feeding hopper 2 to move toward the negative pressure conveyor 3. When the tea moves to the negative pressure conveyor 3, the negative pressure pump 4 works to generate negative pressure in the strip negative pressure shell 32. The negative pressure section of the strip negative pressure shell 32 generates negative pressure, so that the tea on the feeding conveyor 1 is adsorbed by the negative pressure to the porous conveyor belt 34, and moves toward the blanking section along the porous conveyor belt 34. When the tea moves to the blanking section, the tea leaves are not There is a negative pressure hole 36 to provide negative pressure, and the tea leaves fall into the weighing channel 5 here, and are continuously accumulated on the weighing plate 62 in the weighing channel 5. The weighing sensor 61 monitors the weight of the tea leaves thereon in real time. When the set weight is reached, the electric telescopic rod 7 is shortened until the weighing plate rotates downward to a horizontal position. At this time, the tea leaves fall from the weighing plate 62, and finally fall into the packaging box on the cartoning conveyor 8 through the discharge pipe 51. Then the cartoning conveyor 8 continues to transport the packaging box forward for sealing, completing a quantitative packaging.

[0030] It should also be noted that all the "arrangements" and similar descriptive words in this application (especially the specification) express that there is or exists a connection relationship between two structures, but there is no excessive limitation on the specific means by which the two are connected, and it is usually a conventional connection means, that is, it should be understood that the means are prior art and there is no need for excessive elaboration. For example, "n is arranged on m" only expresses that there is n structure on m structure, and the two are specifically connected by welding, riveting, adhesive connection or integral molding, which are all within the protection scope of this application; for another example, "y is rotatably arranged on x", which only expresses that y and x can rotate relative to each other, and whether the two are connected by bearing rotation, or y directly passes through x and is connected to x rotationally, or other feasible methods, are all within the protection scope of this application.

[0031] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A tea quantitative box packing device, comprising a feeding conveyor (1), characterized in that: The feeding conveyor (1) is provided with a feeding hopper (2) with an opening at the lower end at the upper part of one end thereof, and further comprises a negative pressure conveyor (3) and a negative pressure pump (4), wherein the negative pressure conveyor (3) comprises a conveying frame (31) arranged along the length direction of the feeding conveyor (1) and having an opening at the lower end, a hollow strip-shaped negative pressure shell (32) arranged in the conveying frame (31), a driving shaft (33) respectively located at both ends of the strip-shaped negative pressure shell (32) and rotatably connected to the conveying frame (31), and a sleeve covering the strip-shaped negative pressure shell (32) and two driving shafts. (33), a porous conveyor belt (34) for driving the drive shaft (33) to rotate, a drive motor (35) for driving the drive shaft (33) to rotate, the strip-shaped negative pressure shell (32) is connected to the inlet end of the negative pressure pump (4) through a negative pressure pipe (41), the negative pressure conveyor (3) is located above the feeding conveyor (1) and partially extends outward away from the feeding hopper (2), the lower end of the strip-shaped negative pressure shell (32) is divided into a negative pressure section with a negative pressure hole (36) and a blanking section without a hole, and the negative pressure section partially extends out of the feeding conveyor (1); A weighing channel (5) is arranged downward at the junction of the negative pressure section and the blanking section, a driving groove (52) is arranged outward from the middle of the weighing channel (5), a support plate (6) capable of vertical rotation is hingedly connected at the intersection of the weighing channel (5) and the driving groove (52), an electric telescopic rod (7) is rotatably connected between the lower side of the support plate (6) and the inner wall of the driving groove (52), a weighing sensor (61) is arranged at the upper end of the support plate (6), and a weighing pan (62) capable of blocking the weighing channel (5) is connected above the support plate (6) through the weighing sensor (61).

2. A tea quantitative box packing device according to claim 1, characterized in that: A baffle (11) is provided above the conveyor belt of the feeding conveyor (1) at the end away from the feeding hopper (2) and in contact with the baffle. The lower part of the end of the feeding hopper (2) away from the baffle (11) is in contact with the conveyor belt of the feeding conveyor (1). A discharge gap (12) is left between the lower part of the end of the feeding hopper (2) close to the baffle (11) and the conveyor belt of the feeding conveyor (1).

3. The tea quantitative box packing equipment according to claim 1 is characterized in that: The lower end of the weighing channel (5) is connected to a downwardly disposed feeding pipe (51).

4. The tea quantitative box packing equipment according to claim 1 is characterized in that: A box loading conveyor (8) is arranged below the weighing channel (5).

5. The tea quantitative box packing equipment according to claim 4, characterized in that: The cartoning conveyor (8) is provided with a photoelectric sensor transmitter (81) and a photoelectric sensor receiver (82) on both sides directly below the weighing channel (5).

6. The tea quantitative box packing equipment according to claim 1, characterized in that: The upper portion of the weighing channel (5) is approximately V-shaped.

7. The tea quantitative box packing equipment according to claim 1, characterized in that: The weighing pan (62) is concave downwards and has a groove shape.

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