A device for blanching Eucommia ulmoides leaves with waste heat recovery

Abstract

This utility model discloses a eucommia leaf blanching device with waste heat recovery, relating to the field of eucommia leaf blanching technology, including a blanching box and a storage component; the blanching box: has a vent at the upper left end, with a guide frame fixed inside the vent; a second temperature sensor is installed at the rear inside the blanching box; evenly distributed electric heating tubes are installed at the lower inside the blanching box; a conveying component and a leveling component are installed inside the blanching box, the conveying component and the leveling component cooperate with each other; a waste heat recovery component is installed on the upper side of the guide frame; the storage component: includes an insulation frame, a storage tank, a spiral tube, a return pipe, a discharge pipe, a high-temperature centrifugal pump, a feeding pipe, a discharge pipe, and a solenoid valve; the upper right end of the blanching box has an opening, with an insulation frame fixed inside the opening, which can fully recover and utilize the waste heat generated during the blanching process.

Description

Technical Field

[0001] This utility model relates to the field of Eucommia ulmoides leaf blanching technology, specifically to a Eucommia ulmoides leaf blanching device with waste heat recovery. Background Technology

[0002] In the processing of Eucommia ulmoides leaves, the blanching process is the core step in locking in its medicinal active ingredients. However, current blanching equipment mostly uses direct heating methods such as electric heating, gas heating, or steam heating, which has significant drawbacks in practical applications. On the one hand, the high-temperature waste gas generated by traditional processes is often discharged directly into the air without treatment, resulting in a large amount of disordered heat dissipation and low energy conversion efficiency, leading to consistently high production energy costs. On the other hand, the material conveying process lacks an intelligent material leveling mechanism, and uneven stacking thickness obstructs the heat conduction path, not only prolonging the heat treatment cycle but also creating additional energy losses. At the same time, existing waste heat recovery devices mostly use simple heat exchange structures, with insufficient contact efficiency between the heat exchange medium and the waste gas, making it difficult to meet the needs of continuous production in terms of heat recovery efficiency. Therefore, we propose a blanching device for Eucommia ulmoides leaves with waste heat recovery. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a Eucommia ulmoides leaf blanching device with waste heat recovery, which can fully recover and utilize the waste heat generated during the blanching process, and can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a eucommia leaf blanching device with waste heat recovery, comprising a blanching box and a storage component;

[0005] Blanching box: A vent is provided on the upper left side, and an air guide frame is fixed inside the vent. A second temperature sensor is installed on the rear side inside the blanching box. Evenly distributed electric heating tubes are installed on the lower side inside the blanching box. A conveying assembly and a leveling assembly are installed inside the blanching box. The conveying assembly and the leveling assembly cooperate with each other. A waste heat recovery assembly is installed on the upper side of the air guide frame.

[0006] Storage Components: Includes an insulation frame, storage tank, spiral tube, reflux pipe, discharge pipe, high-temperature centrifugal pump, injection pipe, discharge pipe, and solenoid valve. An opening is located on the right side of the upper side of the blanching box. An insulation frame is fixed inside the opening, and a storage tank is fixed inside the insulation frame. A spiral tube is wound around the circumference of the storage tank and fixed inside the insulation frame. A reflux pipe is fixed to one end of the spiral tube, and a discharge pipe is fixed to the other end. A high-temperature centrifugal pump is installed on the upper side of the blanching box. The left end of the discharge pipe penetrates the wall of the insulation frame and is fixed inside the inlet of the high-temperature centrifugal pump. An injection pipe is fixed inside the outlet of the high-temperature centrifugal pump. A discharge pipe is fixed inside the discharge port located at the lower end of the storage tank. A solenoid valve is installed on the circumference of the discharge pipe. The left ends of both the reflux pipe and the injection pipe are connected to a waste heat recovery component. The storage components are used to store Eucommia ulmoides leaves that need blanching.

[0007] Wherein: the second temperature sensor is bidirectionally electrically connected to an external PLC controller, and the input terminals of the heating element and the high-temperature centrifugal pump are both electrically connected to the output terminals of the external PLC controller.

[0008] Furthermore, the conveying assembly includes a first motor, a conveying shaft, and a conveying mesh belt. The first motor is installed at the right end of the front side of the blanching box. Two corresponding conveying shafts are rotatably connected inside the blanching box. The two conveying shafts are connected by a conveying mesh belt, which is located above all the heating tubes. The input end of the first motor is electrically connected to the output end of an external PLC controller. The conveying assembly is used to move the Eucommia ulmoides leaves that need to be blanched.

[0009] Furthermore, the leveling assembly includes a second motor, a rotating shaft, and a flat plate. The second motor is installed on the front side of the blanching box, and the rotating shaft is rotatably connected inside the blanching box. The output shaft of the second motor is fixed at the front end of the rotating shaft, which is located above the conveyor belt. Three corresponding flat plates are fixed on the circumference of the rotating shaft. The input end of the second motor is electrically connected to the output end of an external PLC controller. By setting the leveling assembly, the Eucommia ulmoides leaves that need to be blanched are leveled to ensure uniform heating.

[0010] Furthermore, the waste heat recovery assembly includes an installation box, an air inlet strip, an exhaust pipe, an exhaust fan, a first temperature sensor, baffles, and a serpentine guide tube. The installation box is fixed to the upper side of the air guide frame. An air inlet strip is opened at the lower left end of the installation box. Two corresponding exhaust ports are opened on the right side of the installation box. An exhaust pipe is fixed inside the exhaust port. An exhaust fan is installed inside the exhaust pipe. The first temperature sensor is installed on the right side inside the installation box. Baffles are evenly distributed on the front and rear sides inside the installation box. Two corresponding fixing holes are opened on the right side of the installation box. A serpentine guide tube is fixed inside the two fixing holes. The serpentine guide tube is located between all the baffles. The return pipe and the injection pipe are respectively connected to the two ports of the serpentine guide tube. The serpentine guide tube is filled with heat-conducting oil. The first temperature sensor is bidirectionally electrically connected to an external PLC controller. The waste heat recovery assembly recovers the waste heat generated during the blanching process.

[0011] Furthermore, an observation port is provided on the front side of the blanching box, and a transparent plate is fixed inside the observation port to facilitate observation of the inside of the blanching box.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This Eucommia ulmoides leaf blanching device with waste heat recovery has the following advantages:

[0013] 1. The heat transfer oil filled in the serpentine guide tube forms a closed loop with the spiral tube in the storage component. After the high-temperature waste gas enters the waste heat recovery component through the gas guide frame, the heat transfer oil circulates along the path of the injection pipe, serpentine guide tube, return pipe and spiral tube under the drive of the high-temperature centrifugal pump. Utilizing the high specific heat capacity of the heat transfer oil, the heat of the waste gas is continuously transferred to the material to be treated in the storage tank through the spiral tube, so as to make full use of the waste heat.

[0014] 2. The first temperature sensor monitors the exhaust gas temperature inside the installation box in real time. The PLC controller adjusts the exhaust fan speed and the output power of the high-temperature centrifugal pump synchronously according to the temperature change: when the exhaust gas temperature is detected to rise, the exhaust fan speed is reduced to reduce the airflow velocity and increase the heat exchange time between the serpentine guide tube and the exhaust gas.

[0015] 3. The storage component uses a spiral tube to enclose the storage tank in a circumferential manner, combined with the heat insulation protection of the insulation frame, so that the heat carried by the heat transfer oil forms a radial temperature gradient along the wall of the storage tank, preheating the raw materials inside the storage tank and avoiding heat waste.

[0016] 4. The periodic spreading action of the leveling component is coordinated with the intermittent movement of the conveyor belt to form a uniform layer of Eucommia ulmoides leaves above the heating tube. The second temperature sensor provides real-time feedback on the temperature distribution data inside the blanching box. The PLC controller adjusts the power of the heating tube in different zones. Combined with the residual heat compensation effect of the heat transfer oil system, the uniformity of material heating is improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the storage component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the conveying component structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the waste heat recovery component of this utility model;

[0021] Figure 5 This is a schematic diagram of the flattening component structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the mounting box of this utility model;

[0023] Figure 7 This is a front sectional view of the present invention.

[0024] In the diagram: 1. Blanching box, 2. Air guide frame, 3. Storage component, 31. Insulation frame, 32. Storage tank, 33. Spiral tube, 34. Return pipe, 35. Discharge pipe, 36. High-temperature centrifugal pump, 37. Injection pipe, 38. Discharge pipe, 39. Solenoid valve, 4. Conveying component, 41. First motor, 42. Conveying shaft, 43. Conveying mesh belt, 5. Waste heat recovery component, 51. Mounting box, 52. Air inlet strip, 53. Exhaust pipe, 54. Exhaust fan, 55. First temperature sensor, 56. Baffle plate, 57. Serpentine guide pipe, 6. Flattening component, 61. Second motor, 62. Rotating shaft, 63. Flat plate, 7. Second temperature sensor, 8. Heating element, 9. Transparent plate. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-7This embodiment provides a technical solution: a eucommia leaf blanching device with waste heat recovery, including a blanching box 1 and a storage component 3;

[0027] Blanching box 1: A vent is provided on the upper left side, and an air guide frame 2 is fixed inside the vent. A second temperature sensor 7 is installed on the rear side inside the blanching box 1. Evenly distributed electric heating tubes 8 are installed on the lower side inside the blanching box 1. A conveying assembly 4 and a leveling assembly 6 are installed inside the blanching box 1, and the conveying assembly 4 and the leveling assembly 6 cooperate with each other. A waste heat recovery assembly 5 is installed on the upper side of the air guide frame 2. The conveying assembly 4 includes a first motor 41, a conveying shaft 42, and a conveyor belt 43. The first motor 41 is installed on the front right side of the blanching box 1. Two corresponding conveying shafts 42 are rotatably connected inside the blanching box 1. 42 are connected by a conveyor belt 43, which is located above all the heating elements 8. The input of the first motor 41 is electrically connected to the output of an external PLC controller. The leveling assembly 6 includes a second motor 61, a rotating shaft 62, and a flat plate 63. The second motor 61 is installed on the front side of the blanching box 1. The rotating shaft 62 is rotatably connected inside the blanching box 1. The output shaft of the second motor 61 is fixed at the front end of the rotating shaft 62, which is located above the conveyor belt 43. Three corresponding flat plates 63 are fixed on the circumference of the rotating shaft 62. The input of the second motor 61 is electrically connected to the output of an external PLC controller. The waste heat recovery assembly 5 includes a mounting box 51, an air inlet 52, an exhaust pipe 53, an exhaust fan 54, a first temperature sensor 55, baffles 56, and a serpentine guide pipe 57. The mounting box 51 is fixed to the upper side of the air guide frame 2. An air inlet 52 is located at the lower left end of the mounting box 51. Two corresponding exhaust ports are located on the right side of the mounting box 51. An exhaust pipe 53 is fixed inside each exhaust port, and an exhaust fan 54 is installed inside the exhaust pipe 53. The first temperature sensor 55 is installed on the right side inside the mounting box 51. Evenly distributed baffles 56 are fixed to the front and rear sides inside the mounting box 51. Two corresponding fixing holes are opened on the right side. A serpentine guide tube 57 is fixed inside the two fixing holes. The serpentine guide tube 57 is located between all the baffles 56. The return pipe 34 and the injection pipe 37 are respectively connected to the two ports of the serpentine guide tube 57. The inside of the serpentine guide tube 57 is filled with heat-conducting oil. The first temperature sensor 55 is bidirectionally electrically connected to the external PLC controller. The waste heat recovery component 5 is set to recover the waste heat generated during the blanching process. The flattening component 6 is set to flatten the Eucommia ulmoides leaves that need to be blanched so that they are heated evenly. The conveying component 4 is set to move the Eucommia ulmoides leaves that need to be blanched.

[0028] Storage component 3 includes an insulation frame 31, a storage tank 32, a spiral tube 33, a return pipe 34, a discharge pipe 35, a high-temperature centrifugal pump 36, a feeding pipe 37, a discharge pipe 38, and a solenoid valve 39. An opening is provided on the right side of the upper side of the blanching box 1. An insulation frame 31 is fixed inside the opening, and a storage tank 32 is fixed inside the insulation frame 31. A spiral tube 33 is wound around the circumference of the storage tank 32 and fixed inside the insulation frame 31. One end of the spiral tube 33 is fixed to a return pipe 34, and the other end is fixed to a discharge pipe. A high-temperature centrifugal pump 36 is installed on the upper side of the blanching box 1. The left end of the discharge pipe 35 passes through the frame wall of the heat insulation frame 31 and is fixed inside the inlet of the high-temperature centrifugal pump 36. A feeding pipe 37 is fixed inside the discharge port of the high-temperature centrifugal pump 36. A discharge pipe 38 is fixed inside the discharge port at the lower end of the storage tank 32. A solenoid valve 39 is installed on the circumference of the discharge pipe 38. The left ends of the return pipe 34 and the feeding pipe 37 are connected to the waste heat recovery component 5. The Eucommia ulmoides leaves that need to be blanched are stored by setting the storage component 3.

[0029] Among them, the second temperature sensor 7 is bidirectionally electrically connected to the external PLC controller, and the input terminals of the heating element 8 and the high-temperature centrifugal pump 36 are both electrically connected to the output terminals of the external PLC controller.

[0030] Among them, the front side of the blanching box 1 is provided with an observation port, and a transparent plate 9 is fixed inside the observation port. The transparent plate 9 makes it convenient to observe the inside of the blanching box 1.

[0031] The working principle of the Eucommia ulmoides leaf blanching device with waste heat recovery provided by this utility model is as follows: First, the blanched leaves are stored inside the storage tank 32. During blanching, the electric heating tube 8 is activated, creating a high-temperature environment inside the blanching box 1. Then, the solenoid valve 39 is opened, and the Eucommia ulmoides leaves to be blanched are fed onto the conveyor belt 43 through the discharge pipe 38. At this time, the first motor 41 drives the conveyor shaft 42 to rotate the conveyor belt 43 to transport the Eucommia ulmoides leaves. Simultaneously, the second motor 61 drives the rotating shaft 62 to rotate the spreading plate 63 periodically, spreading the accumulated Eucommia ulmoides leaves into a uniform thin layer. The spread material undergoes blanching treatment on the conveyor belt 43 through the heat radiation zone of the electric heating tube 8. The second temperature sensor 7 monitors the temperature distribution inside the blanching box 1 in real time and feeds the data back to the PLC controller to dynamically adjust the power of the electric heating tube 8. The high-temperature exhaust gas generated during the blanching process enters through the air guide frame 2 and the air inlet strip 52. The heat transfer oil enters the installation box 51 and flows in a meandering manner along the path designed by the baffle plate 56 under the negative pressure generated by the exhaust fan 54. At this time, the heat transfer oil in the serpentine guide tube 57 circulates under the drive of the high-temperature centrifugal pump 36. During this process, the heat transfer oil and the exhaust gas exchange heat in a countercurrent manner, and the temperature rises. Then, it enters the spiral tube 33 through the return pipe 34, and transfers the heat to the raw materials to be processed in the storage tank 32 for waste heat utilization. During the waste heat recovery process, the first temperature sensor 55 monitors the temperature of the exhaust gas in the installation box 51 in real time. When the temperature exceeds the temperature threshold stored in the external PLC controller, the external PLC controller simultaneously reduces the speed of the exhaust fan 54 and increases the power of the high-temperature centrifugal pump 36. The baffle plate 56 prolongs the residence time of the exhaust gas and accelerates the flow efficiency of the heat transfer oil in the serpentine guide tube 57 and the spiral tube 33. Under these conditions, the heat exchange effect can be improved, thereby further improving the utilization of waste heat.

[0032] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The high-temperature centrifugal pump 36, the first motor 41, the second motor 61, the exhaust fan 54, the first temperature sensor 55, and the second temperature sensor 7 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the high-temperature centrifugal pump 36, the first motor 41, the second motor 61, and the exhaust fan 54 using methods commonly used in the prior art.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A eucommia leaf deactivation device with waste heat recovery, characterized by: Includes a blanching box (1) and a storage component (3); Blanching box (1): A vent is provided on the upper left side, and an air guide frame (2) is fixed inside the vent. A second temperature sensor (7) is installed on the rear side inside the blanching box (1). A uniformly distributed electric heating tube (8) is installed on the lower side inside the blanching box (1). A conveying assembly (4) and a leveling assembly (6) are installed inside the blanching box (1). The conveying assembly (4) and the leveling assembly (6) cooperate with each other. A waste heat recovery assembly (5) is installed on the upper side of the air guide frame (2). Storage component (3): includes a heat-insulating frame (31), a storage tank (32), a spiral tube (33), a return pipe (34), a discharge pipe (35), a high-temperature centrifugal pump (36), a feeding pipe (37), a discharge pipe (38), and a solenoid valve (39). The upper right end of the blanching box (1) has an opening, and the heat-insulating frame (31) is fixed inside the opening. The storage tank (32) is fixed inside the heat-insulating frame (31). The spiral tube (33) is wound around the circumference of the storage tank (32). The spiral tube (33) is fixed inside the heat-insulating frame (31). One end of the spiral tube (33) is fixed with a return pipe (34). The other end of the spiral tube (33) is fixed with a discharge pipe (35). A high-temperature centrifugal pump (36) is installed on the upper side of the blanching box (1). The left end of the discharge pipe (35) passes through the frame wall of the heat insulation frame (31) and is fixed inside the inlet of the high-temperature centrifugal pump (36). A feeding pipe (37) is fixed inside the outlet of the high-temperature centrifugal pump (36). A discharge pipe (38) is fixed inside the discharge port at the lower end of the storage tank (32). A solenoid valve (39) is installed on the circumferential surface of the discharge pipe (38). The left ends of the return pipe (34) and the feeding pipe (37) are both connected to the waste heat recovery component (5). Wherein: the second temperature sensor (7) is bidirectionally electrically connected to the external PLC controller, and the input terminals of the heating tube (8) and the high-temperature centrifugal pump (36) are both electrically connected to the output terminal of the external PLC controller.

2. The eucommia leaf deenzing equipment with waste heat recovery according to claim 1, characterized in that: The conveying assembly (4) includes a first motor (41), a conveying shaft (42) and a conveying mesh belt (43). The first motor (41) is installed on the right side of the front side of the blanching box (1). The blanching box (1) has two corresponding conveying shafts (42) rotatably connected inside. The two conveying shafts (42) are connected by the conveying mesh belt (43). The conveying mesh belt (43) is located above all the electric heating tubes (8). The input end of the first motor (41) is electrically connected to the output end of an external PLC controller.

3. The eucommia leaf deenzing equipment with waste heat recovery according to claim 2, characterized in that: The leveling assembly (6) includes a second motor (61), a rotating shaft (62), and a spreading plate (63). The second motor (61) is installed on the front side of the blanching box (1). The rotating shaft (62) is rotatably connected inside the blanching box (1). The output shaft of the second motor (61) is fixed at the front end of the rotating shaft (62). The rotating shaft (62) is located above the conveyor belt (43). Three corresponding spreading plates (63) are fixed on the circumferential surface of the rotating shaft (62). The input end of the second motor (61) is electrically connected to the output end of an external PLC controller.

4. The eucommia leaf de-enzyming device with waste heat recovery according to claim 1, characterized in that: The waste heat recovery assembly (5) includes a mounting box (51), an air inlet strip (52), an exhaust pipe (53), an exhaust fan (54), a first temperature sensor (55), a baffle plate (56), and a serpentine guide pipe (57). The mounting box (51) is fixed on the upper side of the air guide frame (2). An air inlet strip (52) is opened at the lower left end of the mounting box (51). Two corresponding exhaust ports are opened on the right side of the mounting box (51). An exhaust pipe (53) is fixed inside the exhaust port. An exhaust fan (54) is installed inside the exhaust pipe (53). The right side of the mounting box (51) is... A first temperature sensor (55) is installed on the side. Baffles (56) are evenly distributed on the front and rear sides inside the mounting box (51). Two corresponding fixing holes are opened on the right side of the mounting box (51). A serpentine guide tube (57) is fixed inside the two fixing holes. The serpentine guide tube (57) is located between all the baffles (56). The return pipe (34) and the injection pipe (37) are respectively connected to the two ports of the serpentine guide tube (57). The serpentine guide tube (57) is filled with heat transfer oil. The first temperature sensor (55) is bidirectionally electrically connected to an external PLC controller.

5. The eucommia leaf de-enzyming apparatus with waste heat recovery according to claim 1, characterized in that: An observation port is provided on the front side of the blanching box (1), and a transparent plate (9) is fixed inside the observation port.

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