A waste compressor mineral oil heat recovery treatment device
Patent Information
- Application Number
- CN202522292952.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-10-29
AI Technical Summary
传统的抽取吸收回收装置存在两个显著弊端：首先，直接抽取的过程中，存在部分残留，尤其是酯化后的矿物油未能得到充分回收；其次是在加热融化回收的过程中，加热产生的高温烟气蕴含的大量热能未被有效利用，造成能源的严重浪费；为维持加热室的工作温度，加热元件需持续消耗能量以补偿通过箱体壁面散失的热量，整体能耗高
本实用新型将加热过程中产生的高温烟气，通过由气泵缸体、活塞及带单向阀的进气管、排气管构成的抽气机构，输送至紧贴电加热箱外壁的S型换热管中，烟气在换热管内流动时，其携带的热量通过管壁传递给两侧水箱内的水浴介质，进而对电加热箱形成有效的“水浴保温”，这一过程将原本烟气直接排放散失的热能回收并用于补偿箱体的散热损失，显著降低了主加热元件的能耗，形成了一种内在的节能循环。
Smart Images
Figure CN224695100U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste recycling technology, specifically a waste compressor mineral oil heat recovery treatment device. Background Technology
[0002] In the field of waste compressor resource recovery, mineral oil recycling is of great significance. Mineral oil is a non-renewable resource, and recycling waste mineral oil and reusing it can reduce the mining and production of new mineral oil, contributing to the sustainable use of resources. Traditional extraction and absorption recovery devices have two significant drawbacks: First, during the direct extraction process, some residues remain, especially esterified mineral oil, which is not fully recovered; second, during the heating and melting recovery process, the large amount of heat energy contained in the high-temperature flue gas generated is not effectively utilized, resulting in serious energy waste; to maintain the operating temperature of the heating chamber, the heating elements need to continuously consume energy to compensate for the heat lost through the chamber walls, resulting in high overall energy consumption.
[0003] To improve thermal energy utilization efficiency, some improvements have emerged in existing technologies, such as insulating the heating chamber itself with thickened insulation cotton or a double-layer jacket structure. However, thickening the insulation cotton increases the equipment volume, while a static double-layer jacket can only provide insulation and cannot actively replenish heat to counteract heat loss. Therefore, there is an urgent need in this field for a more efficient, energy-saving, and compact solution. To address this, we provide a waste compressor mineral oil heat recovery treatment device to solve the aforementioned problems. Summary of the Invention
[0004] The purpose of this invention is to provide a waste compressor mineral oil heat recovery treatment device that can actively and efficiently recover the waste heat carried by the flue gas without significantly increasing additional energy consumption, and directly use this heat to compensate for the heat loss of the heating chamber itself, thereby forming an internal, self-driven energy-saving cycle, fundamentally reducing the operating cost of the mineral oil recovery process, and solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A waste compressor mineral oil heat recovery treatment device includes an electric heating box, a gas collection hood on the top of the electric heating box, a drive shaft rotatably mounted on the gas collection hood, a ventilation fan mounted on the drive shaft, water tanks on both sides of the electric heating box, heat exchange tubes inside the water tanks, and an exhaust mechanism on the electric heating box for conveying flue gas inside the gas collection hood to the heat exchange tubes. The exhaust mechanism includes a pump cylinder fixed above the electric heating box, a piston slidably engaged inside the pump cylinder, and an inlet pipe communicating with the gas collection hood and an exhaust pipe communicating with the heat exchange tubes. The piston and the transmission main shaft are connected by a linkage structure. When the transmission main shaft rotates, it drives the piston to slide back and forth in the air pump cylinder.
[0006] The above-mentioned waste compressor mineral oil heat recovery treatment device: the top of the electric heating box is provided with a ventilation opening that communicates with the inside of the gas collection hood, and the ventilation fan is fixed at the ventilation opening.
[0007] The above-mentioned waste compressor mineral oil heat recovery treatment device: a drive motor is provided on the gas collection hood, and the output end of the drive motor is connected to the transmission main shaft through a coupling to drive the transmission main shaft to rotate.
[0008] The above-mentioned waste compressor mineral oil heat recovery treatment device: the heat exchange tube is coiled in a continuous S-shaped curve, and the heat exchange tube is closely attached to the outer wall of the electric heating box.
[0009] A waste compressor mineral oil heat recovery treatment device as described above: a first one-way valve is installed on the air inlet pipe, which only allows gas inside the gas collection hood to flow into the air pump cylinder, and a second one-way valve is installed on the exhaust pipe, which only allows gas inside the air pump cylinder to flow into the heat exchange tube.
[0010] A waste compressor mineral oil heat recovery treatment device as described above: the linkage structure includes a driven shaft rotatably mounted on an electric heating box, the driven shaft and the transmission main shaft are driven by a belt mechanism, the transmission main shaft rotates and drives the driven shaft to rotate synchronously, a crank is provided on the driven shaft, a piston rod fixed to the piston is movably inserted into the air pump cylinder, a connecting rod is provided between the piston rod and the crank, and the two ends of the connecting rod are respectively hinged to the crank and the piston rod.
[0011] A waste compressor mineral oil heat recovery treatment device as described above: the belt mechanism includes a driven pulley fixed on the driven shaft and a driving pulley fixed on the transmission main shaft, and the driven pulley and the driving pulley are driven by a transmission belt.
[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention delivers the high-temperature flue gas generated during the heating process to an S-shaped heat exchange tube closely attached to the outer wall of the electric heating box through an air extraction mechanism consisting of an air pump cylinder, piston, and an inlet and outlet pipe with a one-way valve. As the flue gas flows inside the heat exchange tube, the heat it carries is transferred through the tube wall to the water bath medium in the water tanks on both sides, thereby forming an effective "water bath insulation" for the electric heating box. This process recovers the heat energy that would otherwise be lost by direct emission of flue gas and uses it to compensate for the heat loss of the box, significantly reducing the energy consumption of the main heating element and forming an inherent energy-saving cycle.
[0013] Therefore, compared with the traditional passive insulation layer, this utility model actively heats and insulates the electric heating box by continuously flowing warm flue gas through the heat exchange pipe. This helps to maintain better temperature uniformity inside the electric heating box, ensuring that the mineral oil evaporates more fully and consistently, thereby improving the recovery rate and purity of the mineral oil. Attached Figure Description
[0014] Figure 1 This is a first-view schematic diagram of the overall structure of a waste compressor mineral oil heat recovery treatment device.
[0015] Figure 2 This is a schematic diagram of the overall structure of a waste compressor mineral oil heat recovery treatment device from a second perspective.
[0016] Figure 3 A waste compressor mineral oil heat recovery treatment device Figure 1 A schematic diagram of the decomposed part of the structure.
[0017] Figure 4 A waste compressor mineral oil heat recovery treatment device Figure 3 A schematic diagram of the decomposed part of the structure.
[0018] Figure 5 A waste compressor mineral oil heat recovery treatment device Figure 4 A schematic diagram of the decomposed part of the structure.
[0019] In the diagram: 1. Electric heating box; 2. Gas collection hood; 3. Transmission main shaft; 4. Ventilation fan; 5. Drive motor; 6. Water tank; 7. Heat exchange tube; 8. Air pump cylinder; 9. Piston; 10. Piston rod; 11. Driven shaft; 12. Driven pulley; 13. Drive pulley; 14. Transmission belt; 15. Crank; 16. Connecting rod; 17. Intake pipe; 18. Exhaust pipe. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0021] Please see Figures 1-5As an embodiment of this utility model, a waste compressor mineral oil heat recovery treatment device includes an electric heating box 1, a gas collection hood 2 is provided on the top of the electric heating box 1, a transmission main shaft 3 is rotatably provided on the gas collection hood 2, a ventilation fan 4 is provided on the transmission main shaft 3, water tanks 6 are respectively provided on both sides of the electric heating box 1, a heat exchange tube 7 is provided inside the water tank 6, and an air extraction mechanism is provided on the electric heating box 1 for conveying the flue gas inside the gas collection hood 2 into the heat exchange tube 7. The air extraction mechanism includes an air pump cylinder 8 fixed above the electric heating box 1, a piston 9 is slidably engaged inside the air pump cylinder 8, and an air inlet pipe 17 communicating with the gas collection hood 2 and an exhaust pipe 18 communicating with the heat exchange tube 7 are provided on the air pump cylinder 8. The piston 9 and the transmission main shaft 3 are connected by a linkage structure. When the transmission main shaft 3 rotates, it will drive the piston 9 to slide back and forth in the air pump cylinder 8.
[0022] In this embodiment, an electric heating wire is embedded in the inner wall of the electric heating box 1 to heat the shell of the electric heating box 1, thereby raising the internal temperature of the electric heating box 1. The dismantled compressor is continuously heated inside the electric heating box 1, causing the mineral oil in the compressor to evaporate and separate, thus facilitating its recycling. During the heat recovery process, the rotation of the drive shaft 3 drives the ventilation fan 4 to rotate, causing the flue gas generated by the evaporation of mineral oil in the waste compressor to be drawn into the gas collection hood 2 by the electric heating box 1. At the same time, the rotation of the drive shaft 3 drives the piston 9 to reciprocate in the air pump cylinder 8. The sliding mechanism, in conjunction with the inlet pipe 17 connected to the gas collection hood 2 and the exhaust pipe 18 connected to the heat exchange pipe 7, draws the flue gas inside the gas collection hood 2 into the heat exchange pipe 7. A water inlet is provided on the water tank 6, through which water is injected into the water tank 6. When the hot flue gas flows through the heat exchange pipe 7, it exchanges heat with the water inside the water tank 6, thereby heating the water and recovering the heat in the flue gas. At the same time, the volatile mineral oil liquefies upon cooling and is recovered with high purity. The water tank 6 then provides water bath insulation for the shell of the electric heating box 1, effectively reducing the heat loss of the electric heating box 1.
[0023] As a further embodiment of this utility model, the top of the electric heating box 1 is provided with a ventilation opening that communicates with the inside of the gas collection hood 2, and the ventilation fan 4 is fixed at the ventilation opening.
[0024] In this embodiment, the vent forms the main channel for flue gas to flow from the inside of the electric heating box 1 to the gas collection hood 2. The ventilation fan 4 is installed directly opposite the vent. When it rotates, it can generate a strong upward suction force to ensure that the flue gas generated in the electric heating box 1 can be efficiently and quickly drawn into the gas collection hood 2, preventing the flue gas from accumulating or dissipating in the electric heating box 1.
[0025] As a further embodiment of this utility model, a drive motor 5 is provided on the gas collection hood 2, and the output end of the drive motor 5 is connected to the transmission main shaft 3 through a coupling to drive the transmission main shaft 3 to rotate.
[0026] In this embodiment, the drive motor 5 is electrically connected to an external power source via a wire. As the sole power source for the entire device, the drive motor 5 directly drives the transmission shaft 3 to rotate via a coupling. This centralized power design simplifies the equipment structure. The rotation of the transmission shaft 3 simultaneously drives the operation of the ventilation fan 4 and the linkage of the entire air extraction mechanism, realizing the driving of multiple functions by a single motor.
[0027] As a further embodiment of this utility model, the heat exchange tube 7 is coiled in a continuous S-shaped curve and is closely attached to the outer wall of the electric heating box 1.
[0028] In this embodiment, the S-shaped coiled design greatly increases the effective heat exchange length and contact area of the heat exchange tube 7 in the water tank 6, allowing the high-temperature flue gas to have more time to exchange heat with the water in the water tank 6, thereby significantly improving the heat recovery efficiency. At the same time, the heat exchange tube 7 is arranged close to the outer wall of the electric heating box 1, which is conducive to the heated water transferring heat to the electric heating box 1 more directly, thus enhancing the heat preservation effect.
[0029] As a further embodiment of this utility model, a first one-way valve is installed on the intake pipe 17, which only allows the gas inside the gas collection shroud 2 to flow into the gas pump cylinder 8, and a second one-way valve is installed on the exhaust pipe 18, which only allows the gas inside the gas pump cylinder 8 to flow into the heat exchange tube 7.
[0030] In this embodiment, the cooperation of the first one-way valve and the second one-way valve together ensures the directionality of the airflow: when the piston 9 slides backward to draw in air, the first one-way valve opens and the second one-way valve closes, and the flue gas is drawn into the air pump cylinder 8 from the gas collection hood 2; when the piston 9 slides forward to exhaust air, the first one-way valve closes and the second one-way valve opens, and the flue gas is forced into the exhaust pipe 18 and delivered to the heat exchange pipe 7. This ensures that the flue gas can only flow unidirectionally along the path of "gas collection hood 2 → air pump cylinder 8 → heat exchange pipe 7", preventing backflow.
[0031] As a further embodiment of this utility model, the linkage structure includes a driven shaft 11 rotatably mounted on the electric heating box 1. The driven shaft 11 is driven by a belt mechanism to the transmission main shaft 3. When the transmission main shaft 3 rotates, it will drive the driven shaft 11 to rotate synchronously. A crank 15 is provided on the driven shaft 11. A piston rod 10 fixed to the piston 9 is movably inserted into the air pump cylinder 8. A connecting rod 16 is provided between the piston rod 10 and the crank 15. The two ends of the connecting rod 16 are respectively hinged to the crank 15 and the piston rod 10.
[0032] In this embodiment, the linkage structure converts the continuous rotational motion of the transmission main shaft 3 into the linear reciprocating motion of the piston 9. The belt mechanism is responsible for transmitting power from the transmission main shaft 3 to the driven shaft 11. The crank 15 fixed on the driven shaft 11 rotates accordingly, and drives the piston rod 10 and piston 9 to reciprocate in the air pump cylinder 8 through the connecting rod 16, thereby realizing the functions of gas suction and compression.
[0033] As a further embodiment of this utility model, the belt mechanism includes a driven pulley 12 fixed on the driven shaft 11 and a driving pulley 13 fixed on the transmission main shaft 3. The driven pulley 12 and the driving pulley 13 are driven by a transmission belt 14.
[0034] In this embodiment, by selecting driving pulley 13 and driven pulley 12 of different diameters, the rotational speed of crank 15 can be adjusted, thereby controlling the reciprocating frequency of piston 9 and the amount of flue gas pumped, so as to achieve the best match with the exhaust volume of ventilation fan 4.
[0035] During operation, the drive motor 5 is started, driving the transmission spindle 3 to rotate. The transmission spindle 3 directly drives the ventilation fan 4 at its end to rotate, continuously drawing the high-temperature fumes generated during the thermal dismantling of the electric heating box 1 into the top gas collection hood 2. Simultaneously, the rotational power of the transmission spindle 3 is transmitted to the driven shaft 11 through the driving pulley 13, the transmission belt 14, and the driven pulley 12, causing the driven shaft 11 to rotate synchronously. The driven shaft 11 drives the crank 15 to rotate, and the crank 15 drives the piston rod 10 and piston 9 to reciprocate linearly within the air pump cylinder 8 via the connecting rod 16. When the piston 9 retracts, a negative pressure is generated within the air pump cylinder 8. At this time, the first one-way valve on the intake pipe 17 opens, and the exhaust pipe 18... When the second one-way valve on the gas hood 2 is closed, the flue gas collected in the gas hood 2 is drawn into the air pump cylinder 8. When the piston 9 moves forward, positive pressure is generated in the air pump cylinder 8, the first one-way valve closes, the second one-way valve opens, the drawn-in flue gas is compressed and pumped into the exhaust pipe 18, and then delivered to the S-shaped heat exchange tubes 7 in the water tanks 6 on both sides. When the flue gas flows through the coil, its heat is transferred to the water in the water tank 6 through the tube wall, realizing heat energy recovery. The cooled flue gas is finally liquefied and discharged from the outlet of the heat exchange tube 7, which can be connected to the subsequent purification equipment. The heated water is used to keep the electric heating box 1 warm by water bath, which effectively reduces the energy loss of the main heater and forms a highly efficient and energy-saving internal heat recycling system.
[0036] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.
Claims
1. A waste compressor mineral oil heat recovery treatment device, comprising an electric heating box (1), characterized in that, The electric heating box (1) is provided with a gas collection hood (2) on top, and a transmission main shaft (3) is rotatably provided on the gas collection hood (2). A ventilation fan (4) is provided on the transmission main shaft (3). Water tanks (6) are provided on both sides of the electric heating box (1). A heat exchange tube (7) is provided inside the water tank (6). An air extraction mechanism is provided on the electric heating box (1) for conveying the flue gas inside the gas collection hood (2) to the heat exchange tube (7). The air extraction mechanism includes an air pump cylinder (8) fixed above the electric heating box (1). A piston (9) is slidably engaged inside the air pump cylinder (8). An air inlet pipe (17) communicating with the gas collection hood (2) and an exhaust pipe (18) communicating with the heat exchange tube (7) are provided on the air pump cylinder (8). The piston (9) and the transmission shaft (3) are connected by a linkage structure. When the transmission shaft (3) rotates, it will drive the piston (9) to slide back and forth in the air pump cylinder (8).
2. The waste compressor mineral oil heat recovery treatment device according to claim 1, characterized in that, The electric heating box (1) has a ventilation opening at the top that communicates with the inside of the gas collection hood (2), and the ventilation fan (4) is fixed at the ventilation opening.
3. The waste compressor mineral oil heat recovery treatment device according to claim 1, characterized in that, The gas collection hood (2) is equipped with a drive motor (5), and the output end of the drive motor (5) is connected to the transmission main shaft (3) through a coupling to drive the transmission main shaft (3) to rotate.
4. The waste compressor mineral oil heat recovery treatment device according to claim 1, characterized in that, The heat exchange tube (7) is coiled in a continuous S-shaped curve and is closely attached to the outer wall of the electric heating box (1).
5. The waste compressor mineral oil heat recovery treatment device according to claim 1, characterized in that, The intake pipe (17) is equipped with a first one-way valve that allows gas inside the gas collection hood (2) to flow into the gas pump cylinder (8), and the exhaust pipe (18) is equipped with a second one-way valve that allows gas inside the gas pump cylinder (8) to flow into the heat exchange pipe (7).
6. The waste compressor mineral oil heat recovery treatment device according to claim 1, characterized in that, The linkage structure includes a driven shaft (11) rotatably mounted on the electric heating box (1). The driven shaft (11) is driven by a belt mechanism to the transmission main shaft (3). When the transmission main shaft (3) rotates, it will drive the driven shaft (11) to rotate synchronously. A crank (15) is provided on the driven shaft (11). A piston rod (10) fixed to the piston (9) is movably inserted into the air pump cylinder (8). A connecting rod (16) is provided between the piston rod (10) and the crank (15). The two ends of the connecting rod (16) are respectively hinged to the crank (15) and the piston rod (10).
7. The waste compressor mineral oil heat recovery treatment device according to claim 6, characterized in that, The belt mechanism includes a driven pulley (12) fixed on the driven shaft (11) and a driving pulley (13) fixed on the transmission main shaft (3). The driven pulley (12) and the driving pulley (13) are driven by a transmission belt (14).