Online filter device for organic heat carrier furnace

Abstract

This invention discloses an online filtration device for an organic heat carrier furnace, belonging to the technical field of organic heat carrier furnaces. The device includes a barrel body, inside which a cylindrical filter assembly is installed. An oil inlet pipe is located on the upper side of the barrel body, passing directly through the interior of the filter assembly. An oil outlet pipe is located at the bottom of the barrel body, separated from the oil inlet pipe by the filter assembly. A transmission cylinder is slidably fitted onto the barrel body, and a lifting drive mechanism is rotatably connected to the top of the transmission cylinder. An oil suction pipe is connected to the upper end of the lifting drive mechanism, passing through the interior of the transmission cylinder along its axis. A rotation drive mechanism is fixedly installed on the barrel body. In this invention, the impurity-sweeping pipe, in conjunction with the lifting and rotation drive mechanisms, provides a lifting and rotating cleaning function. It can comprehensively clean impurities adhering to the inner sides of the first and second filter screens, ensuring filter performance, reducing the frequency of manual downtime for disassembly and cleaning, and lowering operational complexity.

Description

Technical Field

[0001] This invention relates to the field of organic heat carrier furnaces, and particularly to an online filtration device for organic heat carrier furnaces. Background Technology

[0002] Organic heat carrier furnaces are special industrial furnaces that use coal, oil, gas, or electricity as fuel and heat transfer oil as the heat carrier. They utilize a circulating oil pump to force liquid-phase circulation, transferring heat energy to the heat-using equipment and then returning it for reheating. They feature low pressure and high temperature, safety and high efficiency, and energy saving, and are widely used in various industrial fields such as petroleum, chemical, and textile industries.

[0003] Chinese patent CN215026545U discloses an online filtration device for an organic heat carrier furnace. The working principle of this device is as follows: heat transfer oil enters the filtration chamber inside the furnace cylinder through the inlet and is purified by an adjustable double-layer filter system. In the early stages of furnace operation, the heat transfer oil contains mostly large mechanical impurities, and the device operates in coarse filtration mode. At this time, the motor drives the shaft to overlap the first and second filter screens, forming larger pores to filter large particles and maintain low flow resistance. In the later stages of operation, finer impurities appear in the heat transfer oil, and the system switches to fine filtration mode. The motor rotates, causing the two filter screens to cross, reducing the effective pore size and improving filtration accuracy. When impurities clog the filter screens, the pressure sensor detects increased resistance and automatically starts the motor to drive the shaft to rotate relative to the filter screen, scraping off impurities and collecting them in a recessed area in the middle of the shaft to prevent clogging of the circulation pump or furnace tubes. A temperature sensor monitors the oil temperature in real time, and online sampling and observation holes ensure system safety. Finally, the filtered heat transfer oil flows out from the outlet, achieving efficient online filtration under different operating conditions.

[0004] The shortcomings of the existing technical solutions are as follows: when the motor drives the shaft to rotate to scrape off impurities from the filter screen, these impurities are collected in the recessed area in the middle of the shaft. After prolonged use, impurities accumulate in the recessed area, requiring manual disassembly and cleaning, which increases the maintenance frequency and operational complexity; long-term accumulation may lead to increased shaft rotation resistance, affecting filtration efficiency and even causing secondary pollution. Summary of the Invention

[0005] This invention provides an online filtration device for an organic heat carrier furnace, which can solve the problem in the prior art where impurities are collected in the recessed part of the rotating shaft, requiring manual shutdown and disassembly for cleaning during maintenance, which increases the maintenance frequency and operational complexity.

[0006] An online filtration device for an organic heat carrier furnace includes a barrel body. A cylindrical filter assembly is disposed inside the barrel body. An oil inlet pipe is disposed on the upper side of the barrel body, passing directly through the interior of the filter assembly. An oil outlet pipe is disposed at the bottom of the barrel body, separated from the oil inlet pipe by the filter assembly. A transmission cylinder is slidably fitted onto the barrel body. A lifting drive mechanism is rotatably connected to the top of the transmission cylinder, which can drive the transmission cylinder to move up and down. An oil suction pipe is connected to the upper end of the lifting drive mechanism, passing through the interior of the transmission cylinder along its axis. A rotation drive mechanism is fixedly disposed on the barrel body, which drives the transmission cylinder to rotate. A sweeping and suction pipe is rotatably connected to the bottom of the oil suction pipe, engaging with the transmission cylinder and tilted to one side. A cleaning assembly is disposed at the end of the sweeping and suction pipe, used to clean the inner cavity of the surrounding filter assembly under the action of the transmission cylinder.

[0007] As a further aspect of the present invention: an extension cylinder is provided above the barrel body, extending upward along the transmission cylinder and slidingly engaging with it.

[0008] As a further embodiment of the present invention: the rotary drive mechanism includes a servo motor fixedly mounted above the barrel, a drive wheel fixedly mounted at the output end of the servo motor, a transmission wheel rotatably mounted at the upper end of the extension cylinder, a transmission belt fitted on the drive wheel and the transmission wheel, a transmission ring fixedly mounted coaxially at the upper end of the transmission wheel, and a transmission assembly between the transmission ring and the transmission cylinder.

[0009] As a further aspect of the present invention: the transmission ring extends longitudinally along its side and has multiple sets of ball grooves. The transmission component includes multiple sets of rolling balls rotatably disposed inside the transmission ring. The protruding portions of the rolling balls from the inside of the transmission ring are all located in the corresponding ball grooves. The rolling balls can move along the ball grooves. When the rolling balls make circular motion, they can drive the ball grooves to make circular motion.

[0010] As a further embodiment of the present invention: a slag collection plate is fixedly provided at the bottom of the transmission cylinder, and the slag collection plate is sloped downward around its perimeter to guide impurities to fall off. The slag collection plate is fixedly connected to the impurity sweeping and suction pipe.

[0011] As a further aspect of the present invention: a sealing cylinder is rotatably disposed inside the extension cylinder, the sealing cylinder is sleeved on the side of the transmission cylinder, and the sealing cylinder is provided with a protruding structure that is compatible with the bead groove inside, in order to prevent leakage.

[0012] As a further embodiment of the present invention: the lifting drive mechanism includes an electric telescopic rod fixedly installed on the upper side of the barrel, a lifting cantilever fixedly installed at the extended end of the electric telescopic rod, the lifting cantilever being rotatably connected to the upper end of the transmission cylinder, and the oil extraction pipe being fixedly connected to the lifting cantilever.

[0013] As a further aspect of the present invention: a return oil pipe is provided on one side of the oil outlet pipe for returning the filtered oil to the inside of the barrel.

[0014] As a further embodiment of the present invention: the filter component includes a fixed plate rotatably disposed inside the barrel body, a filter drive motor is fixedly disposed at the bottom of the barrel body, the output end of the filter drive motor is fixedly connected to the fixed plate, a first filter screen is fixedly disposed above the fixed plate, and a second filter screen is fixedly disposed inside the barrel body, the second filter screen being arranged around the first filter screen.

[0015] As a further aspect of the present invention: the cleaning assembly includes a brush wire disposed at the inlet of the sweeping and suction impurity tube.

[0016] The beneficial effects of this invention are: 1. In this invention, the sweeping and suction pipe, in conjunction with a lifting drive mechanism and a rotating drive mechanism, provides lifting and rotating cleaning functions. The lifting drive mechanism can drive the transmission cylinder and the sweeping and suction pipe to rise or fall, flexibly adjusting the cleaning height according to different cleaning needs. The rotating drive mechanism causes the sweeping and suction pipe to rotate, and the brush at its end rotates accordingly, enabling comprehensive cleaning of impurities adhering to the inner sides of the first and second filter screens. This structure can both initially clean impurities, preventing them from accumulating at the bottom of the tank, and finely clean the filter screens, ensuring filter screen performance, reducing the frequency of manual downtime for disassembly and cleaning, and lowering operational complexity.

[0017] 2. In this invention, the rotary drive mechanism drives the transmission ring to rotate, and the balls inside the transmission ring move circumferentially along the ball grooves, thereby driving the transmission cylinder to rotate, realizing power transmission and rotary drive. Simultaneously, a sealing cylinder rotatably mounted inside the extension cylinder is fitted onto the side of the transmission cylinder. Its internal protrusion structure, adapted to the ball grooves, effectively prevents hot oil leakage. Furthermore, the sealing cylinder can rotate within the extension cylinder and also slide longitudinally with the transmission cylinder, maintaining a good sealing effect while ensuring the normal lifting and rotation of the transmission cylinder. This ensures the stability of the device during use and prevents safety hazards and resource waste caused by hot oil leakage. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of an online filtration device for an organic heat carrier furnace provided by the present invention; Figure 2 A schematic diagram of the longitudinal section structure of an online filtration device for an organic heat carrier furnace provided by the present invention; Figure 3 A schematic diagram of the lifting drive mechanism of an online filtration device for an organic heat carrier furnace provided by the present invention; Figure 4 A schematic diagram of the rotary drive mechanism of an online filtration device for an organic heat carrier furnace provided by the present invention; Figure 5This is a schematic diagram of the sealing cylinder structure of an online filtration device for an organic heat carrier furnace provided by the present invention.

[0019] Explanation of reference numerals in the attached figures: 1. Barrel body; 101. Oil inlet pipe; 102. Oil outlet pipe; 103. Oil return pipe; 104. Extension cylinder; 2. First filter screen; 3. Second filter screen; 4. Fixed plate; 5. Filter screen drive motor; 6. Lifting drive mechanism; 601. Electric telescopic rod; 602. Lifting cantilever; 7. Rotation drive mechanism; 701. Servo motor; 702. Drive wheel; 703. Transmission wheel; 704. Transmission belt; 705. Transmission ring; 8. Oil extraction pipe; 9. Transmission cylinder; 901. Slag collection plate; 902. Bead groove; 10. Sweeping and suction impurity pipe; 11. Sealing cylinder. Detailed Implementation

[0020] The specific embodiments of the present invention will be described in detail below, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figures 1 to 5 As shown in the figure, an online filtration device for an organic heat carrier furnace provided by an embodiment of the present invention includes a barrel 1, a fixed disk 4 rotatably disposed inside the barrel 1, and a filter drive motor 5 fixedly disposed at the bottom of the barrel 1, the output end of the filter drive motor 5 being fixedly connected to the fixed disk 4. A first filter screen 2 is fixedly disposed above the fixed disk 4, and a second filter screen 3 is fixedly disposed inside the barrel 1, surrounding the first filter screen 2. When impurities clog the filter screen, a pressure sensor can detect an increase in resistance. At this time, the filter drive motor 5 is activated, driving the fixed disk 4 to rotate, which in turn drives the first filter screen 2 to rotate within the second filter screen 3. The relative movement of the first filter screen 2 and the second filter screen 3 scrapes away impurities and collects them at the bottom, thereby preventing impurities from clogging the circulating pump or furnace tube. An oil inlet pipe 101 is disposed on the upper side of the barrel 1, passing directly through the interior of the filter assembly, and an oil outlet pipe 102 is disposed at the bottom of the barrel 1, separated from the oil inlet pipe 101 by the filter assembly.

[0022] As an improvement provided by the present invention, a transmission cylinder 9 is slidably fitted onto the barrel body 1. A lifting drive mechanism 6 is rotatably connected to the top of the transmission cylinder 9, and the lifting drive mechanism 6 has the function of driving the transmission cylinder 9 to move up and down. An oil suction pipe 8 is connected to the upper end of the lifting drive mechanism 6, and the oil suction pipe 8 passes through the interior of the transmission cylinder 9 along its axis. A rotation drive mechanism 7 is fixedly installed on the barrel body 1, and the rotation drive mechanism 7 is used to drive the transmission cylinder 9 to rotate. A sweeping and suction impurity pipe 10 is rotatably connected to the bottom of the oil suction pipe 8. The sweeping and suction impurity pipe 10 is in transmission cooperation with the transmission cylinder 9 and is tilted to one side, such as... Figure 3As shown, the end of the impurity-sweeping tube 10 is equipped with a sweeping wire, which is used to clean the inner cavity of the surrounding filter components under the action of the transmission cylinder 9.

[0023] A slag collection plate 901 is fixedly installed at the bottom of the transmission cylinder 9. The slag collection plate 901 is sloped downward around its perimeter. The slope is designed to guide impurities to fall. The slag collection plate 901 is fixedly connected to the sweeping and suction pipe 10.

[0024] In this embodiment, when the first filter screen 2 and the second filter screen 3 move relative to each other, impurities will fall directly onto the slag collection tray 901, or fall along the slope of the slag collection tray 901 to the periphery of the slag collection tray 901. When the rotary drive mechanism 7 drives the slag collection tray 901 to rotate, under the action of centrifugal force generated by the rotation of the slag collection tray 901, impurities will be sent to the periphery of the slag collection tray 901, and impurities at the bottom will detach from the adhesion surface under the action of the impurity sweeping pipe 10. Subsequently, a negative pressure is generated inside the oil extraction pipe 8, and the impurity particles are extracted from the barrel 1 through the impurity sweeping pipe 10.

[0025] Meanwhile, when fine cleaning of the inner sides of the first filter screen 2 and the second filter screen 3 is required, the lifting drive mechanism 6 can drive the transmission cylinder 9 to rise. Then, the rotation drive mechanism 7 drives the transmission cylinder 9 and the sweeping and suction pipe 10 to rotate. The sweeping wires on the sweeping and suction pipe 10 will rotate and clean the impurities attached to the inside of the first filter screen 2 and the second filter screen 3. The cleaned impurities are then sucked away through the sweeping and suction pipe 10, thus completing the cleaning operation.

[0026] A return oil pipe 103 is provided on one side of the oil outlet pipe 102. The function of the return oil pipe 103 is to send the filtered oil drawn away by the impurity suction pipe 10 back to the inside of the barrel 1, thereby maintaining the pressure balance inside the barrel 1.

[0027] In one specific embodiment, an extension cylinder 104 is provided above the barrel body 1, extending upward along the transmission cylinder 9 and slidingly engaging with the transmission cylinder 9, such as... Figure 2 As shown. The rotary drive mechanism 7 includes a servo motor 701 fixedly mounted above the barrel 1. A drive wheel 702 is fixedly mounted at the output end of the servo motor 701. A transmission wheel 703 is rotatably mounted on the upper end of the extension cylinder 104. A transmission belt 704 is fitted onto the drive wheel 702 and the transmission wheel 703. A transmission ring 705 is coaxially fixedly mounted on the upper end of the transmission wheel 703. Multiple sets of ball grooves 902 are longitudinally extended on the side of the transmission ring 705. Multiple sets of balls are rotatably mounted inside the transmission ring 705. The protruding parts of the balls from the inside of the transmission ring 705 are all located in the corresponding ball grooves 902. The balls can move along the ball grooves 902. When the balls make circular motion, they can drive the ball grooves 902 to make circular motion.

[0028] In this embodiment, the servo motor 701 drives the drive wheel 702 to rotate, the drive wheel 702 drives the transmission wheel 703 to rotate via the transmission belt 704, the transmission wheel 703 drives the transmission ring 705 to rotate, the transmission ring 705 drives multiple sets of balls to perform circumferential motion, and the balls drive the ball groove 902 to perform circumferential motion, thereby achieving the rotational driving effect of the transmission cylinder 9.

[0029] In this embodiment, a sealing cylinder 11 is rotatably disposed inside the extension cylinder 104, and the sealing cylinder 11 is sleeved on the side of the transmission cylinder 9, such as... Figure 5 As shown, the sealing cylinder 11 has a raised structure inside that matches the bead groove 902. This raised structure is used to prevent hot oil leakage. The sealing cylinder 11 can rotate inside the extension cylinder 104 and can also slide longitudinally with the transmission cylinder 9 to maintain the sealing effect and ensure stability during use.

[0030] In one specific embodiment, the lifting drive mechanism 6 includes an electric telescopic rod 601 fixedly installed on the upper side of the barrel 1, a lifting cantilever 602 fixedly installed at the extended end of the electric telescopic rod 601, the lifting cantilever 602 being rotatably connected to the upper end of the transmission cylinder 9, and the oil extraction pipe 8 being fixedly connected to the lifting cantilever 602.

[0031] In this embodiment, when it is necessary to adjust the height of the slag collection plate 901 and the transmission cylinder 9, the electric telescopic rod 601 can be activated. The electric telescopic rod 601 drives the lifting arm 602 to move, and the lifting arm 602 drives the oil extraction pipe 8 and the transmission cylinder 9 to move up and down, thereby adjusting the cleaning height to meet the cleaning needs under different conditions.

[0032] Working principle: During the operation of the organic heat carrier furnace, hot oil enters the filter device through the oil inlet pipe 101 on the upper side of the tank 1. The hot oil passes through the first filter screen 2 and the second filter screen 3 in sequence. Under the interception effect of these two filter screens, impurities in the hot oil are filtered out.

[0033] The heat transfer oil contains mostly large mechanical impurities. The device uses coarse filtration mode, in which the motor drives the shaft to make the first filter screen 2 and the second filter screen 3 overlap, forming a larger pore size to filter large particles and maintain low flow resistance. In the middle and later stages of operation, fine impurities appear in the heat transfer oil, so the device switches to fine filtration mode. The motor rotates to make the two filter screens cross, reducing the effective pore size to improve filtration accuracy.

[0034] As filtration continues, impurities gradually accumulate, at which point the filter drive motor 5 starts. The filter drive motor 5 drives the fixed disk 4 to rotate, which in turn drives the first filter screen 2 to rotate within the second filter screen 3. The relative movement of the first filter screen 2 and the second filter screen 3 scrapes away the impurities on the filter screens and collects them at the bottom. The clean hot oil after filtration flows out from the oil outlet pipe 102 at the bottom of the tank 1 and enters the subsequent circulation system to ensure the normal operation of the organic heat carrier furnace.

[0035] After the first filter screen 2 and the second filter screen 3 scrape away impurities through relative movement, the impurities will fall directly onto the slag collection tray 901, or fall down the slope around the slag collection tray 901. During maintenance, the rotary drive mechanism 7 is activated, causing the slag collection tray 901 to rotate. Under the centrifugal force generated by the rotation of the slag collection tray 901, the impurities are further sent to the periphery of the slag collection tray 901, and the impurities at the bottom are detached from the adhesion surface by the action of the impurity sweeping pipe 10. Subsequently, a negative pressure is generated inside the oil extraction pipe 8, and the impurity particles are drawn away from the tank 1 through the impurity sweeping pipe 10, completing the initial cleaning of impurities and preventing impurities from accumulating in the tank 1 and affecting the filtration effect.

[0036] When fine cleaning of the inner surfaces of the first filter screen 2 and the second filter screen 3 is required, the lifting drive mechanism 6 is activated. The electric telescopic rod 601 drives the lifting cantilever 602 to move, and the lifting cantilever 602 drives the oil extraction pipe 8 and the transmission cylinder 9 to rise. The rotation drive mechanism 7 is activated, driving the transmission cylinder 9 and the impurity-sweeping pipe 10 to rotate. The bristles on the impurity-sweeping pipe 10 begin to rotate, cleaning the impurities attached to the inside of the first filter screen 2 and the second filter screen 3. The cleaned impurities are drawn away through the impurity-sweeping pipe 10 under the negative pressure of the oil extraction pipe 8, thus completing the fine cleaning operation of the filter screens and ensuring that the filter screens maintain good filtration performance.

[0037] During the process of the oil extraction pipe 8 removing impurities through the impurity suction pipe 10, the oil return pipe 103 sends the filtered oil removed by the impurity suction pipe 10 back into the tank body 1, ensuring that the amount of hot oil in the tank body 1 is relatively stable, so that the entire filtration device can operate continuously and stably.

[0038] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An online filtration device for an organic heat carrier furnace, comprising a barrel (1), wherein a cylindrical filter assembly is disposed inside the barrel (1), an oil inlet pipe (101) is disposed on the upper side of the barrel (1), the oil inlet pipe (101) passes directly through the interior of the filter assembly, and an oil outlet pipe (102) is disposed at the bottom of the barrel (1), wherein the oil outlet pipe (102) and the oil inlet pipe (101) are separated by the filter assembly, characterized in that: A transmission cylinder (9) is slidably fitted on the barrel body (1). A lifting drive mechanism (6) is rotatably connected to the top of the transmission cylinder (9). The lifting drive mechanism (6) can drive the transmission cylinder (9) to move up and down. An oil extraction pipe (8) is connected to the upper end of the lifting drive mechanism (6). The oil extraction pipe (8) passes through the inside of the transmission cylinder (9) along the axis. A rotary drive mechanism (7) is fixedly installed on the barrel (1). The rotary drive mechanism (7) is used to drive the transmission cylinder (9) to rotate. The bottom of the oil extraction pipe (8) is rotatably connected to a sweeping impurity pipe (10). The sweeping impurity pipe (10) is driven and cooperates with the transmission cylinder (9) and is tilted to one side. A cleaning component is provided at the end, which is used to clean the inner cavity of the surrounding filter components under the action of the transmission cylinder (9).

2. The online filtration device for an organic heat carrier furnace as described in claim 1, characterized in that, An extension cylinder (104) is provided above the barrel body (1), extending upward along the transmission cylinder (9) and slidingly engaged.

3. The online filtration device for an organic heat carrier furnace as described in claim 2, characterized in that, The rotary drive mechanism (7) includes a servo motor (701) fixedly mounted above the barrel (1). The output end of the servo motor (701) is fixedly mounted with a drive wheel (702). The upper end of the extension cylinder (104) is rotatably mounted with a transmission wheel (703). The drive wheel (702) and the transmission wheel (703) are fitted with a transmission belt (704). The upper end of the transmission wheel (703) is coaxially fixedly mounted with a transmission ring (705). A transmission component is provided between the transmission ring (705) and the transmission cylinder (9).

4. The online filtration device for an organic heat carrier furnace as described in claim 3, characterized in that, The transmission ring (705) has multiple sets of ball grooves (902) extending longitudinally on its side. The transmission assembly includes multiple sets of balls rotatably disposed inside the transmission ring (705). The protruding parts of the balls from the inside of the transmission ring (705) are all located in the corresponding ball grooves (902). The balls can move along the ball grooves (902). When the balls make circular motion, they can drive the ball grooves (902) to make circular motion.

5. The online filtration device for an organic heat carrier furnace as described in claim 1, characterized in that, The bottom of the transmission cylinder (9) is fixedly provided with a slag collection plate (901). The slag collection plate (901) is sloped downward around its perimeter to guide impurities to fall. The slag collection plate (901) is fixedly connected to the impurity sweeping pipe (10).

6. The online filtration device for an organic heat carrier furnace as described in claim 4, characterized in that, The extension cylinder (104) is rotatably provided with a sealing cylinder (11), which is sleeved on the side of the transmission cylinder (9). The sealing cylinder (11) has a protruding structure that is compatible with the bead groove (902) to prevent leakage.

7. The online filtration device for an organic heat carrier furnace as described in claim 1, characterized in that, The lifting drive mechanism (6) includes an electric telescopic rod (601) fixedly installed on the upper side of the barrel (1). The extension end of the electric telescopic rod (601) is fixedly provided with a lifting arm (602). The lifting arm (602) is rotatably connected to the upper end of the transmission cylinder (9). The oil extraction pipe (8) is fixedly connected to the lifting arm (602).

8. The online filtration device for an organic heat carrier furnace as described in claim 1, characterized in that, A return oil pipe (103) is provided on one side of the oil outlet pipe (102) to return the filtered oil to the inside of the barrel (1).

9. The online filtration device for an organic heat carrier furnace as described in claim 1, characterized in that, The filter component includes a fixed disk (4) rotatably disposed inside the barrel (1), a filter drive motor (5) fixedly disposed at the bottom of the barrel (1), the output end of the filter drive motor (5) being fixedly connected to the fixed disk (4), a first filter screen (2) fixedly disposed above the fixed disk (4), and a second filter screen (3) fixedly disposed inside the barrel (1), the second filter screen (3) surrounding the first filter screen (2).

10. The online filtration device for an organic heat carrier furnace as described in claim 1, characterized in that, The cleaning assembly includes a brush wire disposed at the inlet of the sweeping and suction tube (10).

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