Low-temperature decocting equipment and decocting process for production of Pu'er tea cream

Abstract

The invention relates to the field of Pu'er tea cream boiling, in particular to low-temperature boiling equipment for Pu'er tea cream production and a boiling technology.The low-temperature boiling equipment comprises an extraction tank, a support, a filter cartridge, a heating jacket and an evaporator, the extraction tank is fixedly communicated with a discharging pipe, a vacuumizing pipe and a water purifying pipe, and a detachable sealing cover is installed on the discharging pipe; a supporting assembly used for elastically supporting the filter cartridge is arranged on the sealing cover, a first motor is installed on the support, and a rotating shaft is installed on an output rotating shaft of the first motor. By adopting a low-temperature boiling extraction mode and combining a vacuum environment, tea soup can be boiled at a relatively low temperature, so that aromatic components in tea leaves are effectively protected from being damaged by high temperature, and meanwhile, aroma loss possibly caused by traditional high-temperature boiling is avoided; tea caking can be prevented, it is ensured that all tea makes full contact with tea soup, and therefore the extraction rate of the tea is increased, disintegrating slag is reduced, and purer tea cream is obtained.

Description

Technical Field

[0001] The present invention relates to the technical field of Pu-erh tea paste boiling, and particularly relates to a low-temperature boiling device and boiling process for Pu-erh tea paste production. Background Art

[0002] Pu-erh tea paste is obtained by processing and fermenting the unique arbor large-leaf tea in Yunnan, separating the fiber substances of the tea leaves from the tea juice through a special method, and then reprocessing the obtained tea juice to restore it into a higher-level solid instant tea.

[0003] In the Chinese patent with the publication number CN113662065U, a preparation method and device for tea paste are disclosed. It can heat the water flow inside the water storage tank by heating with a heater, then pour tea and tea powder into the filter screen box, the motor drives the gear roller to rotate, the gear roller drives the rack plate to descend, driving the filter screen box to descend. After the filter screen box descends to a certain height, it contacts and squeezes the tea and tea powder inside the filter screen box, so that the tea juice in the tea and tea powder is quickly discharged, thereby improving the efficiency in the process of boiling tea paste.

[0004] Although the above solution speeds up the filtration of tea soup by squeezing the tea leaves in the filter box, however, during the extrusion extraction of the tea leaves, the internal fibers are easily broken, so that there are easily residues in the boiled tea soup, and the inner-layer tea leaves are also not completely extracted due to agglomeration, affecting the quality of the final tea paste. Moreover, the direct high-temperature boiling method will damage the aroma of the tea leaves themselves and reduce the quality of the tea paste.

[0005] Therefore, the present invention provides a low-temperature boiling device and boiling process for Pu-erh tea paste production to solve the above problems. Summary of the Invention

[0006] In view of the above situation, to overcome the defects of the prior art, the present invention provides a low-temperature boiling device and boiling process for Pu-erh tea paste production to solve the problems that during the extrusion extraction of the tea leaves, the internal fibers are easily broken, so that there are easily residues in the boiled tea soup, and the inner-layer tea leaves are also not completely extracted due to agglomeration, affecting the quality of the final tea paste, and the direct high-temperature boiling method will damage the aroma of the tea leaves themselves and reduce the quality of the tea paste.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A low-temperature boiling device for producing Pu-erh tea paste, comprising an extraction tank, a support, a filter cylinder, a heating jacket and an evaporator. A discharge pipe, a vacuum extraction pipe and a water purification pipe are fixedly communicated with the extraction tank. A detachable cover is installed on the discharge pipe. A support assembly for elastically supporting the filter cylinder is arranged on the cover. A first motor is installed on the support. The output rotating shaft of the first motor is provided with a rotating shaft. The top end of the rotating shaft penetrates through the extraction tank and is fixedly connected with a key block and a stirring blade. An oscillation assembly for lifting and moving the filter cylinder is arranged on the key block.

[0009] The oscillation assembly includes a linkage plate. A sleeve is rotatably connected to the linkage plate. The bottom end of the sleeve is inserted into the key block. A connecting rod is fixedly connected to the sleeve. The top end of the connecting rod is fixedly connected with a support ball. An inclined ring is fixedly connected to the filter cylinder, and the support ball abuts against the inclined ring. A blanking assembly for lifting and moving the linkage plate is arranged on the extraction tank.

[0010] A liquid mixing assembly is arranged outside the extraction tank. The liquid mixing assembly includes a tank body. A water inlet pipe and a water spraying pipe are fixedly communicated with the tank body. One end of the water inlet pipe is fixedly communicated with the bottom of the extraction tank. One end of the water spraying pipe is fixedly communicated with the top of the extraction tank. A piston is slidably connected in the tank body. A water delivery pipe is fixedly communicated with the piston. Check valves are installed on the water inlet pipe, the water spraying pipe and the water delivery pipe.

[0011] A lifting assembly for lifting and moving the piston is arranged below the extraction tank. The lifting assembly includes a rotating rod rotatably connected to the bottom of the extraction tank. The rotating rod is in transmission connection with the rotating shaft. A reciprocating lead screw is fixedly connected to the rotating rod. A lifting rod is slidably connected to the bottom surface of the tank body. The bottom end of the lifting rod is fixedly connected with a linkage seat. The linkage seat is installed on the reciprocating lead screw.

[0012] Preferably, an installation groove is formed in the cover. A positioning screw rod is fixedly connected to the extraction tank. The top end of the positioning screw rod penetrates through the installation groove and is threadedly connected with a fixing nut. The bottom end of the fixing nut abuts against the cover.

[0013] Preferably, the support assembly includes two support plates fixedly connected to the cover. Sliding grooves are formed in both support plates. Slide rods are fixedly connected to both sliding grooves. Sliders are slidably connected to both slide rods. Both sliders are fixedly connected to the filter cylinder. Springs are sleeved on both slide rods, and the springs are located above the sliders.

[0014] Preferably, the blanking assembly includes a second motor installed on the extraction tank. The output rotating shaft of the second motor penetrates through the extraction tank and is fixedly connected to a first lead screw. A guide rod is fixedly connected inside the extraction tank. One end of the linkage plate is threadedly connected to the first lead screw, and the other end of the linkage plate is slidably connected to the guide rod.

[0015] Preferably, a transmission shaft is fixedly connected to the bottom surface of the extraction tank. First gears are fixedly connected to the rotating shaft, the transmission shaft, and the rotating rod, and the three first gears mesh with each other.

[0016] Preferably, a blanking pipe is fixedly communicated with the extraction tank. A control valve is installed on the blanking pipe, and a support seat is installed on the blanking pipe. The end of the blanking pipe away from the extraction tank is located above the evaporator.

[0017] Preferably, a cavity is formed inside the evaporator. A heating plate is installed in the cavity, and a resistance heater is installed on the heating plate. A stirring assembly for stirring the tea soup is provided on the evaporator.

[0018] Preferably, the stirring assembly includes a first control seat fixedly connected to the evaporator and a second control seat fixedly connected to the evaporator. A third motor is installed on the second control seat. The output rotating shaft of the third motor is installed with a second lead screw. A guiding rod is fixedly connected to the first control seat. A sliding seat is threadedly connected to the second lead screw, and one end of the sliding seat is slidably connected to the guiding rod. Three control shafts are rotatably connected to the sliding seat, and a scraping plate is fixedly connected to each control shaft.

[0019] Preferably, a control shaft is fixedly connected to the first control seat. Second gears are fixedly connected to the three control shafts, and the three second gears mesh with each other. A rack matching the second gear is fixedly connected to the first control seat.

[0020] A low-temperature boiling process for producing Pu-erh tea paste includes the following steps:

[0021] S1. Place the Pu-erh tea leaves in the filter cylinder, fix the cover on the feeding pipe, then inject clean water into the extraction tank through the clean water pipe, and evacuate the air in the extraction tank using the vacuum extraction pipe. Under the action of the heating jacket, the clean water in the extraction tank boils at a low temperature, thereby extracting the tea leaves at a low temperature.

[0022] S2. Drive the rotating shaft to rotate through the output rotating shaft of the first motor, and make the key block drive the filter cylinder to move up and down reciprocally on the support assembly through the shock assembly. Also, make the rotating shaft drive the rotating rod through the transmission shaft and the first gear, and make the lifting rod drive the piston to move up and down reciprocally in the tank body, thereby spraying the tea soup at the bottom layer of the extraction tank to the top of the extraction tank through the water inlet pipe and the spray pipe.

[0023] After the tea soup extraction is completed, the tea soup is transported to the evaporator through the feeding pipe, and the tea soup is evaporated and boiled by the resistance heater and the heating plate. During the boiling process, the output rotating shaft of the third motor drives the second lead screw to rotate, so that the sliding seat drives the control shaft to move in the evaporator, and under the action of the rack and the second gear, the scraper flips the tea soup until the tea soup forms tea paste.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. By adopting the low-temperature boiling extraction method and combining with the vacuum environment, the present invention can make the tea soup boil at a lower temperature, which effectively protects the aromatic components in the tea from being damaged by high temperature, and at the same time avoids the aroma loss that may be caused by traditional high-temperature boiling. In addition, through the regular mechanical oscillation of the tea leaves by the oscillation component, the tea leaves can be prevented from agglomerating, ensuring that all tea leaves are fully in contact with the tea soup, thereby improving the extraction rate of the tea leaves, reducing the broken residue, and obtaining a purer tea paste.

[0026] 2. Through the lifting movement of the piston in the mixing liquid component in the tank body, the present invention transports the tea soup at the bottom of the extraction tank to the top of the extraction tank, realizing the circulating flow of the tea soup in the extraction tank, making the tea soup circulate from the bottom to the top of the tank. This not only enhances the mixing uniformity of the tea soup, but also promotes the full contact between the tea leaves and the tea soup, further improving the extraction efficiency, ensuring the full release of the tea leaf components, and thus improving the quality of the tea paste. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention Figure 1 .

[0028] Figure 2 is a schematic diagram of the overall structure of the present invention Figure 2 .

[0029] Figure 3 is for the present invention Figure 2 an enlarged schematic view of the structure at A.

[0030] Figure 4 is a sectional view of the extraction tank of the present invention.

[0031] Figure 5 is for the present invention Figure 4 an enlarged schematic view of the structure at B.

[0032] Figure 6 is a sectional view of the evaporator of the present invention.

[0033] Figure 7 is a schematic diagram of the overall structure of the evaporator of the present invention.

[0034] Figure 8 This is the overall structural schematic diagram of the lifting component in the present invention.

[0035] Figure 9 This is the overall structural schematic diagram of the liquid mixing component in the present invention.

[0036] In the figure: 1, extraction tank; 2, support; 3, discharge pipe; 4, blanking component; 5, support component; 6, liquid mixing component; 7, lifting component; 8, oscillation component; 9, stirring component; 10, control valve; 11, cover; 12, second gear; 13, positioning screw; 14, fixing nut; 16, filter cartridge; 17, key block; 18, first motor; 19, rotating shaft; 20, first gear; 21, blanking pipe; 22, evaporator; 41, second motor; 42, first lead screw; 43, guide rod; 51, support plate; 52, spring; 53, slider; 54, slide bar; 61, tank body; 62, water inlet pipe; 63, water spraying pipe; 64, check valve; 65, water delivery pipe; 66, piston; 71, rotating rod; 72, reciprocating lead screw; 73, linkage seat; 74, lifting rod; 81, sleeve; 82, connecting rod; 83, linkage plate; 84, inclined ring; 91, first control seat; 92, second control seat; 93, third motor; 94, second lead screw; 95, guide rod; 96, sliding seat; 97, control shaft; 98, scraper; 99, rack. Specific embodiments

[0037] Next, each embodiment of the present invention will be described in detail with reference to the attached drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention. Figures 1 to 9

[0038] Figure 1 A low-temperature boiling device for producing Pu-erh tea paste, such as Figure 2 , Figure 4 and​As shown in the figure, it includes an extraction tank 1, a support 2, a filter cartridge 16, a heating jacket, and an evaporator 22. A discharge pipe 3, a vacuum extraction pipe, and a water purification pipe are fixedly connected to the extraction tank 1. Clean water can be transported into the extraction tank 1 through the water purification pipe. The vacuum extraction pipe is connected to an external vacuum pump to evacuate the extraction tank 1. The heating jacket is the heat source for heating the tea soup in the extraction tank 1, and the tea soup can be heated by circulating hot water or an electric heating wire. After the extraction tank 1 is evacuated by the vacuum extraction pipe, the tea soup in the extraction tank 1 will boil at 50 degrees Celsius, thereby extracting the Pu-erh tea leaves in the filter cartridge 16. A plug is designed at the top opening of the filter cartridge 16 to prevent the tea leaves from leaking out of the filter cartridge 16 during extraction. The outer surface of the filter cartridge 16 is designed with holes, and the tea soup will leak out through the holes on the filter cartridge 16. A detachable cover 11 is installed on the discharge pipe 3, and a support assembly 5 for elastically supporting the filter cartridge 16 is provided on the cover 11. A first motor 18 is installed on the support 2, and a rotating shaft 19 is installed on the output rotating shaft of the first motor 18. The top end of the rotating shaft 19 penetrates through the extraction tank 1 and is fixedly connected with a key block 17 and a stirring blade. The rotating shaft 19 is rotatably connected to the bottom surface of the extraction tank 1. The key block 17 forms a key shaft with the rotating shaft 19, and an oscillation assembly 8 for lifting and moving the filter cartridge 16 is provided on the key block 17.

[0039] As Figure 4 shown, the oscillation assembly 8 includes a linkage plate 83. A sleeve 81 is rotatably connected to the linkage plate 83. The bottom end of the sleeve 81 is inserted into the key block 17. A connecting rod 82 is fixedly connected to the sleeve 81. The top end of the connecting rod 82 is fixedly connected with a support ball. An inclined ring 84 is fixedly connected to the filter cartridge 16, and the support ball abuts against the inclined ring 84. A blanking assembly 4 for lifting and moving the linkage plate 83 is provided on the extraction tank 1. There is a groove on the bottom of the sleeve 81 that matches the key block 17. After the sleeve 81 is sleeved on the key block 17, the key block 17 can drive the sleeve 81 to rotate. After the sleeve 81 rotates, the sleeve 81 drives the connecting rod 82 to perform a circular rotational motion, enabling the support ball to abut against the inclined ring 84, causing the inclined ring 84 to drive the filter cartridge 16 to perform a reciprocating lifting and moving motion, oscillating the tea leaves in the filter cartridge 16, and improving the extraction effect of the tea leaves.

[0040] As Figure 1 、 Figure 2 and Figure 9As shown, a liquid mixing component 6 is arranged outside the extraction tank 1, and the liquid mixing component 6 includes a tank body 61, and a water inlet pipe 62 and a water spray pipe 63 are fixedly connected to the tank body 61. One end of the water inlet pipe 62 is fixedly connected to the bottom of the extraction tank 1, and a filter screen is detachably installed in the water inlet pipe 62, which can filter the tea soup entering the water inlet pipe 62 at the bottom of the extraction tank 1 to prevent the sediment in the tea soup from entering the tank body 61. During subsequent cleaning, by adding clean water to the extraction tank 1, the tank body 61 absorbs the clean water in the extraction tank 1 to flush its inner wall, and one end of the water spray pipe 63 is fixedly connected to the top of the extraction tank 1, and a piston 66 is slidably connected in the tank body 61, and a water supply pipe 65 is fixedly connected to the piston 66. One-way valves 64 are installed on the pipe 62, the water spray pipe 63 and the water supply pipe 65. When the piston 66 moves upward in the tank body 61, it will exert pressure on the tea soup above the piston 66, so that the tea soup will be transported to the top of the extraction tank 1 through the water spray pipe 63, and the piston 66 will also exert suction on the bottom of the piston 66, so that the tea soup at the bottom of the extraction tank 1 will be sucked into the tank body 61 through the water inlet pipe 62, and when the piston 66 moves downward in the tank body 61, the tea soup below the piston 66 will enter the top of the piston 66 through the water supply pipe 65. Under the action of the one-way valve 64, the water inlet pipe 62 and the water spray pipe 63 stop passing materials, while the water supply pipe 65 is in a passing state.

[0041] like Figure 1 , Figure 2 , Figure 4 , Figure 8 and Figure 9 As shown, a lifting assembly 7 for lifting and lowering the piston 66 is provided below the extraction tank 1. The lifting assembly 7 includes a rotating rod 71 rotatably connected to the bottom of the extraction tank 1. The rotating rod 71 is transmission-connected to the rotating shaft 19. A reciprocating screw 72 is fixedly connected to the rotating rod 71. A lifting rod 74 is slidably connected to the bottom surface of the tank body 61. A linkage seat 73 is fixedly connected to the bottom end of the lifting rod 74. The linkage seat 73 is installed on the reciprocating screw 72. Both the linkage seat 73 and the reciprocating screw 72 are existing structures. The coordinated movement between them is that after the reciprocating screw 72 rotates, the linkage seat 73 performs a reciprocating lifting movement through the texture on the reciprocating screw 72.

[0042] like Figure 2 and Figure 3 As shown, a mounting groove is provided on the sealing cover 11, and a positioning screw 13 is fixedly connected to the extraction tank 1. The top end of the positioning screw 13 passes through the mounting groove and is threadedly connected with a fixing nut 14, and the bottom end of the fixing nut 14 abuts against the sealing cover 11. After the sealing cover 11 is installed on the discharge pipe 3, the positioning screw 13 is in the mounting groove. The fixing nut 14 can be installed on the positioning screw 13 to limit the sealing cover 11 and improve the sealing performance of the sealing cover 11 on the discharge pipe 3.

[0043] likeFigure 4 and Figure 5 As shown in Figure 5 , the support assembly 5 includes two support plates 51 fixedly connected to the cover 11. Both of the two support plates 51 are provided with sliding grooves, and both of the two sliding grooves are fixedly connected with sliding rods 54. Both of the two sliding rods 54 are slidably connected with sliders 53. Both of the two sliders 53 are fixedly connected to the filter cartridge 16. Both of the two sliding rods 54 are sleeved with springs 52, and the springs 52 are located above the sliders 53. The filter cartridge 16 drives the slider 53 to slide on the sliding rod 54. When the filter cartridge 16 drives the slider 53 to move upward, the slider 53 squeezes the spring 52, and under the elastic action of the spring 52, a downward force is always imparted to the filter cartridge 16. Moreover, the cover 11 can also drive the filter cartridge 16 to move through the support plate 51 and the slider 53, so that the whole filter cartridge 16 can be taken out of the extraction tank 1, and then the tea leaves in the filter cartridge 16 can be cleared out.

[0044] As Figure 4 and Figure 5 As shown in Figure 5 , the feeding assembly 4 includes a second motor 41 installed on the extraction tank 1. The output rotating shaft of the second motor 41 penetrates through the extraction tank 1 and is fixedly connected with a first lead screw 42. A guide rod 43 is fixedly connected inside the extraction tank 1. One end of the linkage plate 83 is threadedly connected to the first lead screw 42, and the other end of the linkage plate 83 is slidably connected to the guide rod 43. When the output rotating shaft of the second motor 41 drives the first lead screw 42 to rotate, under the guiding action of the guide rod 43, the linkage plate 83 moves upward inside the extraction tank 1, so that the linkage plate 83 drives the filter cartridge 16 to move upward through the connecting rod 82 and the inclined ring 84, thus facilitating the pushing out of the filter cartridge 16 from the extraction tank 1.

[0045] As Figure 1 and Figure 2 As shown in Figure 2 , a transmission shaft is fixedly connected to the bottom surface of the extraction tank 1. A first gear 20 is fixedly connected to the rotating shaft 19, the transmission shaft, and the rotating rod 71, and the three first gears 20 mesh with each other. When the output rotating shaft of the first motor 18 drives the rotating shaft 19 to rotate, the first gear 20 on the rotating shaft 19 drives the first gear 20 on the rotating rod 71 to rotate through the first gear 20 on the transmission shaft.

[0046] As Figure 1 and Figure 2 As shown in Figure 2 , a blanking pipe 21 is fixedly communicated with the extraction tank 1. A control valve 10 is installed on the blanking pipe 21. A support seat is installed on the blanking pipe 21. The end of the blanking pipe 21 away from the extraction tank 1 is located above the evaporator 22. After the tea soup extraction in the extraction tank 1 is completed, by opening the control valve 10, the tea soup is conveyed to the evaporator 22 through the blanking pipe 21, and the support seat can support the blanking pipe 21 to improve the stability of the blanking pipe 21.

[0047] AsFigure 6 and Figure 7 As shown in Figure 7 , a cavity is provided in the evaporator 22, a heating plate is installed in the cavity, a resistance heater is installed on the heating plate, the tea soup is above the heating plate after entering the evaporator 22, and the resistance heater provides heat for the heating plate, so that the tea soup will be evaporated into paste on the heating plate. A stirring assembly 9 for stirring the tea soup is provided on the evaporator 22.

[0048] As Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , the stirring assembly 9 includes a first control seat 91 fixedly connected to the evaporator 22 and a second control seat 92 fixedly connected to the evaporator 22. A third motor 93 is installed on the second control seat 92, a second lead screw 94 is installed on the output rotating shaft of the third motor 93, a guiding rod 95 is fixedly connected to the first control seat 91, a sliding seat 96 is threadedly connected to the second lead screw 94, and one end of the sliding seat 96 is slidably connected to the guiding rod 95. Three control shafts 97 are rotatably connected to the sliding seat 96, and a scraping plate 98 is fixedly connected to each control shaft 97. By driving the second lead screw 94 to rotate through the output rotating shaft of the first control seat 91, under the guiding action of the guiding rod 95, the sliding seat 96 can drive the scraping plate 98 on the control shaft 97 to move on the heating plate, so as to prevent the tea paste from adhering to the heating plate for a long time.

[0049] As Figure 1 and Figure 7 As shown in Figure 1 and Figure 7 , a control shaft 97 is fixedly connected to the first control seat 91, a second gear 12 is fixedly connected to each of the three control shafts 97, the three second gears 12 are meshed with each other, and a rack 99 matching the second gear 12 is fixedly connected to the first control seat 91. While the sliding seat 96 is moving, the second gear 12 meshes with the rack 99 and rotates, and the three second gears 12 mesh with each other and rotate, so that the three control shafts 97 can drive the scraping plate 98 to rotate during the movement, and can stir the tea soup to improve the boiling efficiency of the tea soup.

[0050] As Figures 1 - 9 As shown in Figures 1 - 9 , a low-temperature boiling process for producing Pu-erh tea paste includes the following steps:

[0051] S1. Place the Pu-erh tea leaves in the filter cylinder 16, place the cover 11 on the feeding pipe 3, then fix the cover 11 by installing the fixing nut 14 on the positioning screw 13, and then inject purified water into the extraction tank 1 through the water purification pipe, and use the vacuum extraction pipe to evacuate the extraction tank 1. Under the action of the heating jacket, the purified water in the extraction tank 1 is boiled at a low temperature, so as to extract the tea leaves at a low temperature.

[0052] S2. Drive the rotary shaft 19 to rotate through the output rotary shaft of the first motor 18, and cause the key block 17 to drive the connecting rod 82 to perform a circular rotary motion through the sleeve 81, and make the supporting ball on the connecting rod 82 abut against the inclined ring 84, so that the filter cartridge 16 reciprocates up and down on the supporting assembly 5, shakes the tea leaves in the filter cartridge 16, improves the extraction effect of the tea leaves, and also enables the rotary shaft 19 to drive the rotary rod 71 through the transmission shaft and the first gear 20. When the rotary rod 71 drives the reciprocating lead screw 72 to rotate, the linkage seat 73 drives the piston 66 to reciprocate up and down in the tank body 61 through the lifting rod 74. When the piston 66 moves upward in the tank body 61, a squeezing pressure will be applied to the tea soup above the piston 66, so that the tea soup will be transported to the top of the extraction tank 1 through the water spray pipe 63, and the piston 66 will also apply a suction force to the lower part of the piston 66, so that the tea soup at the bottom of the extraction tank 1 will be sucked into the tank body 61 through the water inlet pipe 62, and when the piston 66 moves downward in the tank body 61, the tea soup below the piston 66 will enter above the piston 66 through the water delivery pipe 65, and the tea soup at the bottom layer of the extraction tank 1 will be sprayed to the top of the extraction tank 1 through the water inlet pipe 62 and the water spray pipe 63, making the tea soup in the extraction tank 1 more uniform and ensuring the extraction effect of the tea leaves.

[0053] S3. After the tea soup extraction is completed, transport the tea soup to the evaporator 22 through the blanking pipe 21, and evaporate and boil the tea soup through the resistance heater and the heating plate. During the boiling process, the output rotary shaft of the third motor 93 drives the second lead screw 94 to rotate, so that the sliding seat 96 drives the control shaft 97 to move in the evaporator 22, and under the action of the rack 99 and the second gear 12, the scraper 98 flips the tea soup, which can stir the tea soup and improve the boiling efficiency of the tea soup until the tea soup forms tea paste.

[0054] It should be noted that in the description of the present invention, the terms indicating directions or position relationships such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or position relationships shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A low-temperature boiling device for producing Pu-erh tea paste, characterized in that, It includes an extraction tank (1), a support (2), a filter cartridge (16), a heating jacket and an evaporator (22). A discharge pipe (3), a vacuum extraction pipe and a water purification pipe are fixedly connected to the extraction tank (1). A detachable cover (11) is installed on the discharge pipe (3). A support assembly (5) for elastically supporting the filter cartridge (16) is arranged on the cover (11). A first motor (18) is installed on the support (2). The output rotating shaft of the first motor (18) is provided with a rotating shaft (19). The top end of the rotating shaft (19) penetrates through the extraction tank (1) and is fixedly connected with a key block (17) and a stirring blade. An oscillation assembly (8) for lifting and moving the filter cartridge (16) is arranged on the key block (17). The oscillation assembly (8) includes a linkage plate (83). A sleeve (81) is rotatably connected to the linkage plate (83). The bottom end of the sleeve (81) is inserted into the key block (17). A connecting rod (82) is fixedly connected to the sleeve (81). The top end of the connecting rod (82) is fixedly connected with a support ball. An inclined ring (84) is fixedly connected to the filter cartridge (16), and the support ball abuts against the inclined ring (84). A blanking assembly (4) for lifting and moving the linkage plate (83) is arranged on the extraction tank (1). A liquid mixing assembly (6) is arranged outside the extraction tank (1). The liquid mixing assembly (6) includes a tank body (61). A water inlet pipe (62) and a water spraying pipe (63) are fixedly connected to the tank body (61). One end of the water inlet pipe (62) is fixedly connected to the bottom of the extraction tank (1). One end of the water spraying pipe (63) is fixedly connected to the top of the extraction tank (1). A piston (66) is slidably connected in the tank body (61). A water delivery pipe (65) is fixedly connected to the piston (66). Check valves (64) are installed on the water inlet pipe (62), the water spraying pipe (63) and the water delivery pipe (65). A lifting assembly (7) for lifting and moving the piston (66) is arranged below the extraction tank (1). The lifting assembly (7) includes a rotating rod (71) rotatably connected to the bottom of the extraction tank (1). The rotating rod (71) is in transmission connection with the rotating shaft (19). A reciprocating lead screw (72) is fixedly connected to the rotating rod (71). A lifting rod (74) is slidably connected to the bottom surface of the tank body (61). The bottom end of the lifting rod (74) is fixedly connected with a linkage seat (73). The linkage seat (73) is installed on the reciprocating lead screw (72).

2. The low-temperature boiling equipment for producing Pu-erh tea paste according to claim 1, wherein, An installation groove is formed in the cover (11). A positioning screw (13) is fixedly connected to the extraction tank (1). The top end of the positioning screw (13) penetrates through the installation groove and is threadedly connected with a fixing nut (14), and the bottom end of the fixing nut (14) abuts against the cover (11).

3. The low-temperature boiling equipment for producing Pu-erh tea paste according to claim 1, characterized in that, The support assembly (5) includes two support plates (51) fixedly connected to the cover (11). Chutes are provided on both of the two support plates (51). Slide bars (54) are fixedly connected in both of the two chutes. Sliders (53) are slidably connected to both of the two slide bars (54). Both of the two sliders (53) are fixedly connected to the filter cylinder (16). Springs (52) are sleeved on both of the two slide bars (54), and the springs (52) are located above the sliders (53).

4. The low-temperature boiling equipment for producing Pu-erh tea paste according to claim 1, characterized in that, The blanking assembly (4) includes a second motor (41) installed on the extraction tank (1). The output rotating shaft of the second motor (41) penetrates through the extraction tank (1) and is fixedly connected to a first lead screw (42). A guide rod (43) is fixedly connected inside the extraction tank (1). One end of the linkage plate (83) is threadedly connected to the first lead screw (42), and the other end of the linkage plate (83) is slidably connected to the guide rod (43).

5. A low-temperature boiling device for producing Pu-erh tea paste according to claim 1, characterized in that, A transmission shaft is fixedly connected to the bottom surface of the extraction tank (1). First gears (20) are fixedly connected to the rotating shaft (19), the transmission shaft, and the rotating rod (71), and the three first gears (20) are meshed with each other.

6. The low-temperature boiling equipment for producing Pu-erh tea paste according to claim 1, characterized in that, A blanking pipe (21) is fixedly communicated with the extraction tank (1). A control valve (10) is installed on the blanking pipe (21). A support seat is installed on the blanking pipe (21). The end of the blanking pipe (21) away from the extraction tank (1) is located above the evaporator (22).

7. A low-temperature boiling device for producing Pu-erh tea paste according to claim 1, characterized in that, A cavity is provided inside the evaporator (22). A heating plate is installed in the cavity. A resistance heater is installed on the heating plate. A stirring assembly (9) for stirring the tea soup is provided on the evaporator (22).

8. A low-temperature boiling device for producing Pu-erh tea paste according to claim 7, characterized in that, The stirring assembly (9) includes a first control seat (91) fixedly connected to the evaporator (22) and a second control seat (92) fixedly connected to the evaporator (22). A third motor (93) is installed on the second control seat (92). The output rotating shaft of the third motor (93) is provided with a second lead screw (94). A guide rod (95) is fixedly connected to the first control seat (91). A sliding seat (96) is threadedly connected to the second lead screw (94), and one end of the sliding seat (96) is slidably connected to the guide rod (95). Three control shafts (97) are rotatably connected to the sliding seat (96). A scraping plate (98) is fixedly connected to each of the three control shafts (97).

9. The low-temperature boiling equipment for producing Pu-erh tea paste according to claim 8, characterized in that, A control shaft (97) is fixedly connected to the first control seat (91). Second gears (12) are fixedly connected to all of the three control shafts (97). The three second gears (12) are meshed with each other. A rack (99) matched with the second gear (12) is fixedly connected to the first control seat (91).

10. A low-temperature boiling process for producing Pu-erh tea paste, using a low-temperature boiling device for producing Pu-erh tea paste as described in any one of claims 1-9, characterized in that, Comprising the following steps: S1. Place the Pu-erh tea leaves in the filter cylinder (16), fix the cover (11) on the feeding pipe (3), then inject purified water into the extraction tank (1) through the purified water pipe, and evacuate the extraction tank (1) using the vacuum extraction pipe. Under the action of the heating jacket, the purified water in the extraction tank (1) boils, thereby extracting the tea leaves. S2. Drive the rotating shaft (19) to rotate through the output rotating shaft of the first motor (18), and make the key block (17) drive the filter cylinder (16) to move up and down reciprocally on the support assembly (5) through the vibration assembly (8). Also, make the rotating shaft (19) drive the rotating rod (71) through the transmission shaft and the first gear (20), and make the lifting rod (74) drive the piston (66) to move up and down reciprocally in the tank body (61), so as to spray the bottom layer of the tea soup in the extraction tank (1) to the top of the extraction tank (1) through the water inlet pipe (62) and the water spray pipe (63). S3. After the tea soup extraction is completed, convey the tea soup to the evaporator (22) through the discharge pipe (21), and evaporate and boil the tea soup through the resistance heater and the heating plate. During the boiling process, the output rotating shaft of the third motor (93) drives the second lead screw (94) to rotate, so that the sliding seat (96) drives the control shaft (97) to move in the evaporator (22), and under the action of the rack (99) and the second gear (12), the scraper (98) flips the tea soup until the tea soup forms tea paste.

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