Infrared radiation module for a tea roller

Abstract

The utility model discloses an infrared heat radiation module for tea rolling stove, including the upper cast iron pipe and lower cast iron pipe of high temperature gas flow, upper cast iron pipe and lower cast iron pipe all are the serpentine structure, upper cast iron pipe and lower cast iron pipe jointly have the connecting pipe, and are linked through the connecting pipe, the flow direction of high temperature gas in upper cast iron pipe and lower cast iron pipe is perpendicular with the conveying direction of tea rolling. In the utility model, through setting up upper cast iron pipe and lower cast iron pipe, upper cast iron pipe and lower cast iron pipe form infrared radiation and heat radiation after high temperature tail gas is passed in, make tea receive infrared radiation and heat radiation in the conveying process, realize dry and promote fragrance, through installing lower cast iron pipe on the mount frame that can move up and down, to make lower cast iron pipe can move up and down, thereby adjusting its distance with tea, reach the best radiation distance.

Description

Technical Field

[0001] This utility model relates to the field of tea processing technology, and more specifically, to an infrared heat radiation module for a tea grinding stove. Background Technology

[0002] In the tea-making process, there is a very important step: after the green tea leaves are steamed to kill the greenness, they need to be roasted in a tea-making oven to develop a special roasted aroma (oven aroma) and to better preserve the original green color of the raw materials. Color preservation and oven aroma are the two most important indicators of a tea-making oven.

[0003] Traditional tea grinders typically use brick-type grinders. A large burner heats the cast iron until it's red-hot, and the infrared radiation and convection emitted by the red-hot iron dry the tea leaves. The tea leaves circulate 4-5 layers inside the furnace via a conveyor belt. The disadvantage of this type of grinder is that the cast iron is embedded in the brick joints or inserted into pre-drilled slots. Once the furnace is built, the position of the cast iron is fixed and cannot be adjusted according to the roasting requirements.

[0004] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an infrared thermal radiation module for a tea grinder.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An infrared thermal radiation module for a tea grinder includes an upper cast iron pipe and a lower cast iron pipe for supplying high-temperature gas flow. Both the upper and lower cast iron pipes have a serpentine structure. The upper and lower cast iron pipes are connected by a connecting pipe and are interconnected through the connecting pipe. The flow direction of the high-temperature gas in the upper and lower cast iron pipes is perpendicular to the tea grinding and conveying direction.

[0008] Furthermore, both ends of the upper cast iron pipe and both ends of the lower cast iron pipe are exposed on the conveyor belt used for transporting tea powder.

[0009] Furthermore, it also includes a set of burners, the burners including a housing on which a blower is installed, the outlet of the blower being connected to a lower cast iron pipe, a gas interface being installed on the outer wall of the housing, an air inlet pipe being installed on the gas interface, the end of the air inlet pipe penetrating the housing and extending into the inner cavity of the housing, a nozzle being installed at the end of the air inlet pipe, an ignition needle being installed in the inner cavity of the housing, and a controller being installed on the outer wall of the housing, the controller being electrically connected to the blower and the ignition needle.

[0010] Furthermore, the upper cast iron pipe is fixedly installed inside the furnace body of the tea grinding furnace, and the lower cast iron pipe is fixedly installed on the mounting bracket. The mounting bracket is installed inside the furnace body and can move up and down.

[0011] Furthermore, the mounting bracket is equipped with a height adjustment mechanism for adjusting the vertical height of the mounting bracket.

[0012] Furthermore, the mounting frame has a rectangular structure, and a set of height adjustment mechanisms is installed at each of the four corners of the mounting frame. The height adjustment mechanism includes a vertically arranged screw that is threaded to the body of the tea grinding furnace. One end of the screw is located inside the furnace and is rotatably connected to the mounting frame, while the other end of the screw is located outside the furnace and is fixedly installed with a first nut.

[0013] Furthermore, the screw is threadedly connected to a second nut, which is located inside the furnace body and abuts against the furnace body.

[0014] The beneficial effects of this utility model are:

[0015] 1. In this utility model, by setting up an upper cast iron pipe and a lower cast iron pipe, infrared radiation and thermal radiation are generated in the upper and lower cast iron pipes after the high-temperature exhaust gas is introduced, so that the tea leaves can receive infrared radiation and thermal radiation during the transportation process, thereby achieving drying and aroma enhancement; at the same time, by setting up a connecting pipe, the upper and lower cast iron pipes are connected. On the one hand, the upper and lower cast iron pipes share a single burner, reducing the number of burners required and lowering costs, and making full use of the heat of the high-temperature exhaust gas. On the other hand, by utilizing the temperature difference formed when the high-temperature exhaust gas flows, different temperatures are formed in the areas where the upper and lower cast iron pipes are located, thereby adapting to the different temperature requirements of tea leaves at different roasting times.

[0016] 2. In this utility model, the lower cast iron pipe is installed on a vertically movable mounting bracket so that the lower cast iron pipe can move up and down, thereby adjusting the distance between it and the tea leaves to achieve the optimal radiation distance.

[0017] 3. In this utility model, by arranging the upper and lower cast iron pipes in a serpentine pattern, the travel distance of the high-temperature exhaust gas is increased, making full use of the heat of the high-temperature exhaust gas, thereby improving the heat storage effect and increasing the area of ​​thermal radiation and infrared radiation. At the same time, by making the flow direction of the high-temperature exhaust gas in the upper and lower cast iron pipes perpendicular to the conveying direction of the tea leaves, it is ensured that the tea leaves on the conveyor belt can receive the same or similar infrared radiation, avoiding the situation where some tea leaves are over-roasted and some tea leaves are under-roasted. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an infrared thermal radiation module used in the tea grinder in this embodiment.

[0019] Figure 2 This is a schematic diagram of one structure of the burner in this embodiment;

[0020] Figure 3 This is a schematic diagram of a connection structure between the mounting bracket and the tea grinding furnace body in this embodiment;

[0021] Figure 4 This is a schematic diagram of one structure of the height adjustment mechanism in this embodiment;

[0022] Figure 5 This is a schematic diagram of one structure of the tea grinding stove in this embodiment;

[0023] Figure 6 This is a schematic diagram of the structure of the tea grinding stove body in this embodiment;

[0024] Figure 7 This is a schematic diagram of a connection structure between the infrared thermal radiation module and the tea grinding furnace body in this embodiment.

[0025] Reference numerals in the attached drawings: Furnace body 1, First conveyor belt 2, Upper mesh belt 21, Lower mesh belt 22, Second conveyor belt 3, Third conveyor belt 4, Infrared heat radiation module 5, Upper cast iron pipe 51, Lower cast iron pipe 52, Connecting pipe 53, Burner 54, Shell 541, Blower 542, Gas interface 543, Air inlet pipe 544, Nozzle 545, Ignition needle 546, Controller 547, Pressure reducing valve 548, Mounting bracket 55, Height adjustment mechanism 56, Screw 561, First nut 562, Second nut 563, Exhaust pipe 57, First tea hood 6, Tea hood 7, Second tea hood 8. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example: An infrared thermal radiation module for a tea grinder, such as... Figures 1-7 As shown, the furnace includes an upper cast iron pipe 51 and a lower cast iron pipe 52 for supplying high-temperature gas flow. The upper cast iron pipe 51 and the lower cast iron pipe 52 are connected by a connecting pipe 53. During installation, the upper cast iron pipe 51 and the lower cast iron pipe 52 are located at the upper and lower parts of the furnace body 1, respectively. Specifically:

[0028] like Figures 5-7As shown, the furnace body 1 of the tea grinding furnace is equipped with a first conveyor belt 2, a second conveyor belt 3, and a third conveyor belt 4, arranged from bottom to top. The left and right sides of the first conveyor belt 2 are exposed outside the furnace body 1. The right side of the first conveyor belt 2 is the feeding end for grinding tea. A first loose tea cover 6 is installed above the right side of the first conveyor belt 2. A loose tea machine 7 is installed below the left side of the first conveyor belt 2. The left side of the third conveyor belt 4 is exposed outside the furnace body 1. A second loose tea cover 8 is installed above the left side of the third conveyor belt 4. The loose tea machine 7 is connected to the second loose tea cover 8 by pipes. The left side of the second conveyor belt 3 is exposed outside the furnace body 1. The left side of the second conveyor belt 3 is the discharging end for grinding tea.

[0029] During operation, the tea leaves fall from the first tea hood 6 to the right side of the first conveyor belt 2, and are then conveyed by the first conveyor belt 2 to the tea maker 7. The tea maker 7 then conveys the tea leaves to the second tea hood 8, from which the tea leaves fall to the left side of the third conveyor belt 4. The tea leaves are then conveyed sequentially on the third conveyor belt 4 and the second conveyor belt 3, and finally fall from the left side of the second conveyor belt 3 to the discharge conveyor (not shown).

[0030] like Figure 6 and Figure 7 As shown, the upper cast iron pipe 51 is horizontally located between the second conveyor belt 3 and the third conveyor belt 4, that is, between the lower mesh belt 22 of the second conveyor belt 3 and the upper mesh belt 21 of the third conveyor belt 4. The lower cast iron pipe 52 is located between the upper mesh belt 21 and the lower mesh belt 22 of the first conveyor belt 2. The flow direction of the high-temperature gas in the upper cast iron pipe 51 and the lower cast iron pipe 52 is perpendicular to the conveying direction of the tea grinding. The high-temperature gas can be the high-temperature exhaust gas after the combustion of fuel gas.

[0031] During tea roasting, the high-temperature exhaust gas from the combustion of fuel gas is introduced into the lower cast iron pipe 52. As the high-temperature exhaust gas flows through the lower cast iron pipe 52 and the upper cast iron pipe 51, it completes the heat storage process of the cast iron pipes. Heat is conducted outward through the pipe walls of the upper cast iron pipe 51 and the lower cast iron pipe 52, forming thermal radiation. At the same time, since the upper cast iron pipe 51 and the lower cast iron pipe 52 are made of cast iron, they generate infrared radiation when heated. The tea receives infrared radiation and thermal radiation during transportation, achieving drying and aroma enhancement.

[0032] By directing the flow direction of the high-temperature exhaust gas in the upper cast iron pipe 51 and the lower cast iron pipe 52 perpendicular to the conveying direction of the tea leaves, it is ensured that all tea leaves on the conveyor belt receive the same or similar infrared radiation, thus avoiding the situation where some tea leaves are over-roasted and others are under-roasted.

[0033] By arranging the upper cast iron pipe 51 and the lower cast iron pipe 52 in a serpentine pattern, the travel distance of the high-temperature exhaust gas is increased, making full use of the heat of the high-temperature exhaust gas, thereby improving the heat storage effect and increasing the area of ​​thermal radiation and infrared radiation.

[0034] By setting up a connecting pipe 53, the upper cast iron pipe 51 and the lower cast iron pipe 52 are connected. On the one hand, the upper cast iron pipe 51 and the lower cast iron pipe 52 share a single burner 54, reducing the number of burners 54 required and lowering costs, while fully utilizing the heat of the high-temperature exhaust gas. On the other hand, the temperature difference formed when the high-temperature exhaust gas flows creates different temperatures in the areas where the upper cast iron pipe 51 and the lower cast iron pipe 52 are located, thus adapting to the different temperature requirements of tea at different roasting times. Preferably, the connecting pipe 53 is a telescopic pipe with a telescopic function to accommodate the height adjustment of the lower cast iron pipe 52. The upper and lower ends of the connecting pipe 53 are sealed, and the connecting pipe 53 is equipped with a sealing mechanism, such as a sealing ring, at the telescopic position to ensure the sealing of the connecting pipe 53 during telescopic movement.

[0035] It should be noted that the first conveyor belt 2, the second conveyor belt 3, and the third conveyor belt 4 are stainless steel mesh conveyor belts. Each set of conveyor belts is equipped with a corresponding active roller and a driven roller. The active roller is connected to the driven roller through the conveyor belt drive. The active roller is connected to a motor and drives the active roller to rotate through the motor. The conveyor belt, active roller, driven roller, and motor are all conventional products of the prior art. Their structure and connection method are not innovative in this embodiment, so they will not be described in detail here.

[0036] Preferably, the infrared thermal radiation module 5 also includes a temperature sensor (not shown), which is located on the upper mesh belt 21 of the first conveyor belt 2, the second conveyor belt 3 and the third conveyor belt 4, respectively, to monitor the temperature of each area of ​​the infrared thermal radiation module 5.

[0037] As a preferred option, such as Figure 6 and Figure 7 As shown, both ends of the upper cast iron pipe 51 are exposed to the second conveyor belt 3 and the third conveyor belt 4, that is, the distance between the two ends of the upper cast iron pipe 51 is greater than the width of the second conveyor belt 3 and the third conveyor belt 4. Both ends of the lower cast iron pipe 52 are exposed to the first conveyor belt 2, that is, the distance between the two ends of the lower cast iron pipe 52 is greater than the width of the first conveyor belt 2. With the above structural design, the tea leaves located on both sides of the conveyor belt can also receive sufficient infrared radiation.

[0038] Furthermore, such as Figure 1 and Figure 2As shown, the infrared thermal radiation module 5 also includes a set of small burners 54. The burner 54 includes a housing 541 on which a blower 542 is installed. The air outlet of the blower 542 is connected to the lower cast iron pipe 52. A gas interface 543 is installed on the outer wall of the housing 541. The gas interface 543 is used to connect to a gas source. An air inlet pipe 544 is installed on the gas interface 543. The end of the air inlet pipe 544 passes through the housing 541 and extends into the inner cavity of the housing 541. A nozzle 545 is installed at the end of the air inlet pipe 544. An ignition needle 546 is installed in the inner cavity of the housing 541. The ignition needle 546 is located at the nozzle 545. A controller 547 is installed on the outer wall of the housing 541. The controller 547 is electrically connected to the blower 542 and the ignition needle 546.

[0039] In use, the gas interface 543 is connected to the gas source, such as the gas interface 543 being connected to the gas cylinder through a hose. The gas cylinder contains gas, which flows through the gas interface 543 and the inlet pipe 544 to the nozzle 545. The nozzle 545 sprays out the gas, which is ignited by an electric spark generated by an ignition needle. The blower 542 is used to transfer outside air into the lower cast iron pipe 52, and under the action of the blower 542, the high-temperature exhaust gas after the gas combustion flows along the lower cast iron pipe 52, the connecting pipe 53, and the upper cast iron pipe 51.

[0040] As a preferred option, such as Figure 1 and Figure 2 As shown, an air inlet hood is installed on the housing 541 at the air inlet position of the blower 542. The air intake volume of the blower 542 can be adjusted by changing the size of the opening at the air inlet end of the air inlet hood.

[0041] As a preferred option, such as Figure 1 , Figure 6 and Figure 7 As shown, an exhaust pipe 57 is installed at the end of the upper cast iron pipe 51. The end of the exhaust pipe 57 passes through the furnace body 1 of the tea grinding furnace and extends to the outside of the furnace body 1.

[0042] As a preferred option, such as Figure 1 As shown, a pressure reducing valve 548 is installed on the outer wall of the housing 541. The pressure reducing valve 548 is connected to the gas interface 543 through a hose. The pressure reducing valve 548 is used to control the gas pressure and flow rate. In use, the pressure reducing valve 548 is connected to the gas source through a hose.

[0043] Furthermore, such as Figure 7 As shown, the upper cast iron pipe 51 is fixedly installed inside the furnace body 1, and the lower cast iron pipe 52 is fixedly installed on the mounting bracket 55. The mounting bracket 55 is installed inside the furnace body 1 and can move up and down. By installing the lower cast iron pipe 52 on the vertically movable mounting bracket 55, the lower cast iron pipe 52 can move up and down, thereby adjusting the distance between the lower cast iron pipe 52 and the tea leaves on the first conveyor belt 2 to achieve the optimal radiation distance.

[0044] Furthermore, such as Figure 3 As shown, a height adjustment mechanism 56 is installed on the mounting bracket 55, which is used to adjust the vertical height of the mounting bracket 55. The height adjustment mechanism 56 can take various forms and is not limited to being driven by a screw 561, a motor, or a cylinder. Any mechanism that can enable the mounting bracket 55 to move vertically is acceptable. For example, the output end of a cylinder can be connected to the mounting bracket 55, and the vertical height of the mounting bracket 55 can be adjusted by using the cylinder.

[0045] Furthermore, such as Figure 4 As shown, the mounting bracket 55 has a rectangular structure. Each of the four corners of the mounting bracket 55 is equipped with a height adjustment mechanism 56. Each height adjustment mechanism 56 includes a vertically arranged screw 561 threadedly connected to the furnace body 1. One end of the screw 561 is located inside the furnace body 1 and rotatably connected to the mounting bracket 55, while the other end is located outside the furnace body 1 and fixedly fitted with a first nut 562. During adjustment, the first nut 562 is turned to drive the screw 561 to rotate. The rotation of the screw 561 causes it to move up and down, which in turn drives the mounting plate to move up and down. Because there are four height adjustment mechanisms 56, a height measuring instrument must be used in conjunction with the mounting plate during height adjustment to ensure that the mounting plate is level.

[0046] Preferably, the screw 561 is threadedly connected to a second nut 563, which is located inside the furnace body 1 and abuts against the frame of the furnace body 1. By providing the second nut 563, the adjustment position of the screw 561 is limited.

[0047] like Figures 5-7 As shown, multiple sets of infrared heat radiation modules 5 can be arranged side-by-side along the length of the furnace body 1. Each set of infrared heat radiation modules 5 is equipped with two sets of cast iron pipes (upper and lower) and a burner 54. When multiple sets of infrared heat radiation modules 5 are connected together, the radiation source inside the furnace body 1 increases significantly. The tea leaves are repeatedly exposed to infrared and heat radiation during the transportation process, allowing the tea leaves to receive radiation for a longer time and produce a higher aroma. At the same time, each set of infrared heat radiation modules 5 is independent, making each set of mounting plates independent of each other. Each set of lower cast iron pipes 52 can move up and down independently to adjust the distance between itself and the tea leaves. Therefore, the vertical position of the lower cast iron pipes 52 can be adjusted individually according to different areas or different raw materials to achieve the optimal radiation distance.

[0048] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An infrared thermal radiation module for a tea grinder, characterized in that, It includes an upper cast iron pipe (51) and a lower cast iron pipe (52) for supplying high-temperature gas flow. Both the upper cast iron pipe (51) and the lower cast iron pipe (52) have a serpentine structure. The upper cast iron pipe (51) and the lower cast iron pipe (52) are connected by a connecting pipe (53) and are connected to each other through the connecting pipe (53). The flow direction of the high-temperature gas in the upper cast iron pipe (51) and the lower cast iron pipe (52) is perpendicular to the conveying direction of the tea grinding.

2. The infrared thermal radiation module for a tea grinder according to claim 1, characterized in that, Both ends of the upper cast iron pipe (51) and both ends of the lower cast iron pipe (52) are exposed on the conveyor belt used for transporting tea powder.

3. The infrared thermal radiation module for a tea grinder according to claim 1, characterized in that, It also includes a set of burners (54), the burners (54) including a housing (541) on which a blower (542) is installed, the outlet of the blower (542) being connected to a lower cast iron pipe (52), a gas interface (543) being installed on the outer wall of the housing (541), an air inlet pipe (544) being installed on the gas interface (543), the end of the air inlet pipe (544) penetrating the housing (541) and extending into the inner cavity of the housing (541), a nozzle (545) being installed at the end of the air inlet pipe (544), an ignition needle (546) being installed in the inner cavity of the housing (541), and a controller (547) being installed on the outer wall of the housing (541), the controller (547) being electrically connected to the blower (542) and the ignition needle (546).

4. The infrared thermal radiation module for a tea grinder according to claim 1, characterized in that, The upper cast iron pipe (51) is fixedly installed inside the furnace body (1) of the tea grinding furnace, and the lower cast iron pipe (52) is fixedly installed on the mounting bracket (55). The mounting bracket (55) is installed inside the furnace body (1) and can move up and down.

5. The infrared thermal radiation module for a tea grinder according to claim 4, characterized in that, The mounting bracket (55) is equipped with a height adjustment mechanism (56) for adjusting the vertical height of the mounting bracket (55).

6. The infrared thermal radiation module for a tea grinder according to claim 5, characterized in that, The mounting bracket (55) has a rectangular structure. Each of the four corners of the mounting bracket (55) is equipped with a set of height adjustment mechanisms (56). The height adjustment mechanism (56) includes a screw (561) that is vertically set and threadedly connected to the furnace body (1) of the tea grinding furnace. One end of the screw (561) is located inside the furnace body (1) and rotatably connected to the mounting bracket (55). The other end of the screw (561) is located outside the furnace body (1) and is fixedly installed with a first nut (562).

7. The infrared thermal radiation module for a tea grinder according to claim 6, characterized in that, The screw (561) is threadedly connected to a second nut (563), which is located inside the furnace body (1) and abuts against the furnace body (1).

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