Oil filtering mechanism and filtering method for thermal oil furnace

Abstract

The present invention belongs to the technical field of thermal oil furnaces, and specifically relates to an oil filtering mechanism and filtering method for thermal oil furnaces. It includes a frame, a control component and a circulation pump installed on the frame, and the circulation pump is connected to the heating barrel through a circulation filtering component; the circulation filtering component includes a barrel body and a filter plate, a fixed column and a rotating sleeve are installed in the barrel body, and there is a gap between the fixed column and the rotating sleeve, a circulation groove is vertically opened on the fixed column, and an even number of installation grooves are opened on the circumference of the rotating sleeve. The filter plate is installed in one of the two opposite installation grooves, and one end of the filter plate is located in the gap between the fixed column and the rotating sleeve and slides. When the amount of oil residue adhering to the filter plate in the present invention reaches a certain value, the next filter plate will automatically replace the filter plate with oil residue adhering, ensuring that only a single filter plate filters the thermal oil, ensuring the permeability of the thermal oil, realizing automatic replacement and cleaning of the filter plate, and reducing the influence of the oil residue on the filter plate on the flow rate of the thermal oil.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal oil furnaces, and in particular relates to an oil filtering mechanism and a filtering method for a thermal oil furnace. Background Art

[0002] The thermal oil furnace directly inserts the electric heater into the organic carrier (thermal oil) for direct heating, and transports the heated thermal oil to the heat-using equipment through the liquid phase circulation of the high-temperature oil pump, and then returns to the electric heating oil furnace from the oil outlet of the heat-using equipment for heating, forming a complete circulation heating system. The electric heating thermal oil furnace uses a digital display temperature controller to control the temperature, and has over-temperature alarm, low oil level alarm, and over-pressure alarm functions.

[0003] When the existing thermal oil furnace is in use, the thermal oil will circulate and heat. Long-term use of the thermal oil will produce waste oil residue. If it is not cleaned in time, the thermal oil containing oil residue will easily reduce the durability of the thermal oil furnace and affect the efficiency of the thermal oil furnace. At present, the most widely used filtering method in the industry is to use filter plates. The filter plates of the oil furnace in the prior art are usually arranged in multiple groups, such as the Chinese patents with publication numbers: CN116617743A and CN214714648U. Since the thermal oil itself has a certain viscosity and poor fluidity, the multi-layer filter plates will reduce the permeability of the thermal oil, which is easy to cause an increase in local oil pressure. If the multi-layer filter plates are blocked, it is extremely easy to cause an explosion. Summary of the invention

[0004] The purpose of the present invention is to provide an oil filtering mechanism and a filtering method for a thermal oil furnace in view of the shortcomings of the prior art, so as to solve the technical problems in the prior art.

[0005] The object of the present invention can be achieved by the following technical scheme: an oil filter mechanism for a thermal oil furnace, comprising a frame, a control component and a circulation pump mounted on the frame, the control component being connected to the circulation pump, and the circulation pump being connected to a heating barrel through a circulation filter component;

[0006] The circulation filtration assembly includes a barrel body and a filter plate. The barrel body is connected to the circulation pump and the heating barrel through an input pipe and an output pipe respectively. A fixed column is fixedly installed in the barrel body, and a rotating sleeve is rotatably installed inside the barrel body, and there is a gap between the fixed column and the rotating sleeve. A circulation groove is vertically opened on the fixed column, and an even number of installation grooves are opened on the circumference of the rotating sleeve. The filter plate is installed in one of the two opposite installation grooves, and one end of the filter plate slides in the gap between the fixed column and the rotating sleeve. The width of the circulation groove is larger than the installation groove. When the filter plate rotates to a vertical position, the filter plate passes through the circulation groove.

[0007] As a further optimization or improvement of this solution, a resettable sliding plate is slidably installed on the barrel body, the sliding plate abuts against one end of the filter plate, a transmission rack is installed on the barrel body, a cam is rotatably installed on the sliding plate, the transmission rack is connected to the cam through a gear, the outer wall of the cam abuts against the transmission plate, the transmission plate is connected to the pressure plate through a compression spring, and the pressure plate contacts the top of the filter plate.

[0008] As a further optimization or improvement of this solution, the sliding plate is connected to the inner wall of the barrel body through a return spring.

[0009] As a further optimization or improvement of this solution, a weight block is installed on the filter plate, and the weight block slides in the gap between the fixed column and the rotating sleeve. When the filter plate rotates to a vertical position, the filter plate and the weight block pass through the circulation groove.

[0010] As a further optimization or improvement of this solution, an aggregate assembly is installed on the inner side of the circulation trough, and the aggregate assembly includes a collecting chamber and a scraper. The scraper is connected to the pressure rod through a rotating shaft. Spring 2 is connected between the scraper and the pressure rod, and the pressure rod is connected to the inner wall of the circulation trough through spring 1.

[0011] As a further optimization or improvement of this solution, the input pipe and the output pipe are integrally located in the upper half of the barrel body, and a baffle is installed in the barrel body.

[0012] A method for filtering a thermal oil furnace, the method being applied to the above-mentioned oil filtering mechanism for a thermal oil furnace, the method comprising the following steps:

[0013] Step S1: Start the circulation pump to transport the heat transfer oil to be filtered from the input pipe to the barrel, and the heat transfer oil will be filtered through the single-layer filter plate;

[0014] Step S2: When the oil residue on the filter plate reaches a certain amount, the heat transfer oil will gradually drive the filter plate and the rotating sleeve to rotate, and the filter plate rotation will drive the sliding plate to move. During this process, the transmission rack drives the cam to rotate, and the rotation of the cam will gradually press the transmission plate, so that the transmission plate presses the top of the filter plate through the compression spring and the pressure plate;

[0015] Step S3: When the filter plate moves to a vertical state, the installation groove overlaps with the circulation groove. At this time, the compression spring rebounds and drives the filter plate to eject downward, so that the filter plate passes through the circulation groove and enters the corresponding installation groove at the bottom of the rotating sleeve. At the same time, the next filter plate rotates to the initial position of the filter plate to replace the filter plate.

[0016] As a further optimization or improvement of this solution, the step S2 specifically includes the following steps: step S21: when the filter plate passes through the circulation groove, the weight block on the filter plate presses the pressure rod downward and drives the pressure rod to rotate, the pressure rod rotates and compresses spring 1, so that the pressure rod drives the scraper to rotate through spring 2, and the collection chamber is opened at this time;

[0017] Step S22: When the scraper presses against the two sides of the filter plate, the spring rebounds and drives the pressure rod to limit the weight block. As the filter plate moves downward, the scraper scrapes off the oil residue on the filter plate. The downward movement of the filter plate will drive the oil in the circulation groove to be squeezed downward and enter the collection chamber. At this time, the oil will drive the scraped oil residue into the collection chamber.

[0018] Step S23: When the scraper finishes cleaning the filter plate, the top of the filter plate drives the weight block to move downward synchronously, so that the weight block is separated from the pressure rod. At this time, the cleaned filter plate enters the corresponding installation groove at the bottom of the rotating sleeve through the circulation groove.

[0019] Beneficial effects of the present invention:

[0020] (1) When the amount of oil residue adhering to the filter plate of the present invention reaches a certain value, the next filter plate will automatically replace the filter plate with the oil residue adhering, ensuring that only a single filter plate filters the thermal oil, thereby ensuring the permeability of the thermal oil. At the same time, the filter plate can be automatically replaced to reduce the influence of the oil residue on the filter plate on the flow rate of the thermal oil.

[0021] (2) When the filter plate and the weight block in the present invention pass through the circulation groove, the weight block will press the pressure rod downward, and the pressure rod will drive the scraper to rotate through the spring 2, so that the scraper presses against the two sides of the filter plate. As the filter plate moves downward, the scraper scrapes off the oil residue on the filter plate. The downward movement of the filter plate will drive the oil in the circulation groove to squeeze downward and enter the collection chamber, so that the oil will drive the scraped oil residue into the collection chamber, so as to clean the oil residue on the filter plate, so that the aggregate assembly can clean the filter plate during the replacement process, realize the automatic replacement and automatic cleaning of the filter plate, and improve the filtering efficiency of the heat transfer oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 This is a schematic diagram of the connection of the circulation filtration component.

[0025] Figure 3 It is a cross-sectional view of the barrel structure.

[0026] Figure 4 Schematic diagram of the sliding plate structure.

[0027] Figure 5 for Figure 4 Schematic diagram of the A part structure.

[0028] Figure 6 Schematic diagram of the internal structure of the barrel.

[0029] Figure 7 for Figure 6 Schematic diagram of the structure of part B.

[0030] Figure 8 It is a schematic diagram of the working state of the present invention.

[0031] The following are marked in the figure: 1. frame; 2. control component; 3. circulation pump; 4. heating barrel; 5. circulation filter component; 51. barrel body; 52. input pipe; 53. output pipe; 54. fixing column; 541. circulation groove; 55. rotating sleeve; 551. mounting groove; 56. filter plate; 57. weight block; 58. reset spring; 59. sliding plate; 510. cam; 511. transmission rack; 512. transmission plate; 513. compression spring; 514. pressure plate; 515. baffle; 6. aggregate assembly; 61. collection chamber; 62. scraper; 63. pressure rod; 64. spring 2; 65. spring 1. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 7 , an oil filtering mechanism for a thermal oil furnace, comprising a frame 1 and a control component 2 and a circulation pump 3 mounted on the frame 1, wherein the control component 2 is connected to the circulation pump 3, and the circulation pump 3 is connected to a heating barrel 4 through a circulation filtering component 5;

[0034] The circulation filtering assembly 5 includes a barrel body 51 and a filter plate 56. The barrel body 51 is connected to the circulation pump 3 and the heating barrel 4 respectively through an input pipe 52 and an output pipe 53. A fixed column 54 is fixedly installed in the barrel body 51. A rotating sleeve 55 is rotatably installed inside the barrel body 51, and there is a gap between the fixed column 54 and the rotating sleeve 55. A circulation groove 541 is vertically opened on the fixed column 54, and an even number of installation grooves 551 are opened on the circumference of the rotating sleeve 55. The filter plate 56 is installed in one of the two opposite installation grooves 551. One end of the filter plate 56 is located in the gap between the fixed column 54 and the rotating sleeve 55 and slides. The width of the circulation groove 541 is larger than the installation groove 551. When the filter plate 56 rotates to a vertical position, the filter plate 56 passes through the circulation groove 541.

[0035] It should be noted that the thermal oil filtering method is as follows: the circulating pump 3 delivers the thermal oil to be filtered from the input pipe 52 to the barrel 51, and then the thermal oil passes through a single filter plate 56 and is delivered from the output pipe 53 to the heating barrel 4. The connection method between the circulating pump 3 and the control component 2 is prior art and will not be described in detail in this application.

[0036] See also Figure 3 At this time, the position of the filter plate 56 is in the initial state. When the heat transfer oil to be filtered is transported to the inside of the barrel 51, the heat transfer oil will be filtered through the single-layer filter plate 56. As the use time of the filter plate 56 increases, the oil residue adhering to the filter plate 56 gradually increases, and the resistance of the heat transfer oil passing through the filter plate 56 increases accordingly. When the oil residue on the filter plate 56 reaches a certain amount, the heat transfer oil will gradually drive the filter plate 56 and the rotating sleeve 55 to rotate. The rotation of the filter plate 56 drives the sliding plate 59 to move, so that the sliding plate 59 gradually compresses the reset spring 58. In this process, the transmission rack 511 drives the cam 510 to rotate through the gear transmission. See Figure 5 , the cam 510 rotates and gradually presses the transmission plate 512, so that the transmission plate 512 compresses the compression spring 513 and the pressure plate 514. At this time, the cam 510 presses the top of the filter plate 56 through the compression spring 513. When the filter plate 56 moves to a vertical state, the installation groove 551 coincides with the circulation groove 541. At this time, the compression spring 513 rebounds and drives the filter plate 56 to eject downward, so that the filter plate 56 passes through the circulation groove 541 and enters the corresponding installation groove 551 at the bottom of the rotating sleeve 55. At the same time, the next filter plate 56 rotates to the initial position of the filter plate 56 to replace the upper filter plate 56. Repeat the above movement. When the amount of oil residue adhering to the filter plate 56 reaches a certain value, the next filter plate 56 will automatically replace the filter plate 56 adhering to the oil residue, ensuring that only a single filter plate 56 filters the heat transfer oil, ensuring the permeability of the heat transfer oil, and at the same time, the filter plate 56 is automatically replaced, the filtration efficiency of the heat transfer oil is improved, and the influence of the oil residue on the filter plate 56 on the flow rate of the heat transfer oil is reduced.

[0037] See also Figure 4-Figure 5 A resettable sliding plate 59 is slidably installed on the barrel body 51, and the sliding plate 59 abuts against one end of the filter plate 56. A transmission rack 511 is installed on the barrel body 51, and a cam 510 is rotatably installed on the sliding plate 59. The transmission rack 511 is connected to the cam 510 through a gear, and the outer wall of the cam 510 abuts against the transmission plate 512. The transmission plate 512 is connected to the pressure plate 514 through a compression spring 513, and the pressure plate 514 contacts the top of the filter plate 56.

[0038] It should be noted that the transmission rack 511 meshes with the gear to form a transmission structure. When the sliding plate 59 moves along the transmission rack 511, the transmission structure drives the cam 510 to rotate, wherein the transmission structure can be a gear rack transmission or a gear transmission. The transmission structure is a prior art and will not be described in detail in this scheme, which does not affect the integrity of this scheme.

[0039] See also Figure 4 The sliding plate 59 is connected to the inner wall of the barrel body 51 through a reset spring 58. It should be noted that the reset spring 58 resets the sliding plate 59 so that the sliding plate 59 can repeatedly eject the filter plate 56 rotated to a vertical state, thereby realizing rapid replacement of the filter plate 56.

[0040] See also Figure 3 and Figure 6 The filter plate 56 is provided with a weight block 57 , and the weight block 57 slides in the gap between the fixed column 54 and the rotating sleeve 55 . When the filter plate 56 rotates to a vertical position, the filter plate 56 and the weight block 57 pass through the circulation groove 541 .

[0041] Specifically, the aggregate assembly 6 is installed inside the circulation groove 541, and the aggregate assembly 6 includes a collecting chamber 61 and a scraper 62. The scraper 62 is connected to the pressure rod 63 through a rotating shaft. A spring 2 64 is connected between the scraper 62 and the pressure rod 63. The pressure rod 63 is connected to the inner wall of the circulation groove 541 through a spring 1 65.

[0042] It should be noted that the weight block 57 has a certain weight. When the filter plate 56 rotates to a vertical state, the filter plate 56 and the weight block 57 will pass through the circulation groove 541 together. During this process, the weight block 57 will drive the filter plate 56 to accelerate through the circulation groove 541. In the initial state, the scraper 62 blocks the collection chamber 61 to prevent the oil residue stored in the collection chamber 61 from leaking.

[0043] See also Figure 8 When the filter plate 56 and the weight block 57 pass through the circulation groove 541, the weight block 57 will press the pressure rod 63 downward and drive the pressure rod 63 to rotate. The pressure rod 63 rotates and compresses the spring 1 65. At the same time, the pressure rod 63 drives the scraper 62 to rotate through the spring 2 64, so that the scraper 62 presses against the two sides of the filter plate 56. At this time, the collecting chamber 61 is opened. When the weight block 57 moves to a certain position, the spring 1 65 rebounds and drives the pressure rod 63 to abut against the weight block 57, so that it limits the weight block 57. As the filter plate 56 moves downward, the scraper 62 scrapes off the oil residue on the filter plate 56, and the downward movement of the filter plate 56 drives the oil in the circulation groove 541 to be squeezed downward and enter the collection chamber 61. At this time, the oil drives the scraped oil residue to enter the collection chamber 61, so as to clean the oil residue of the filter plate 56. When the scraper 62 finishes cleaning the filter plate 56, the top of the filter plate 56 drives the weight block 57 to move downward synchronously, so that the weight block 57 is separated from the pressure rod 63. At this time, the cleaned filter plate 56 passes through the circulation groove 541 and enters the corresponding installation groove 551 at the bottom of the rotating sleeve 55. The present invention uses the collection assembly 6 installed in the circulation groove 541, so that the collection assembly 6 can clean the filter plate 56 during the replacement process, realize the automatic replacement and automatic cleaning of the filter plate 56, and improve the filtering efficiency of the heat transfer oil.

[0044] See also Figure 6 The inlet pipe 52 and the outlet pipe 53 are integrally located in the upper half of the barrel 51, and a baffle 515 is installed in the barrel 51. It should be noted that the inlet pipe 52 and the outlet pipe 53 are installed in the upper half of the barrel 51 to ensure that the heat transfer oil can flow along the barrel 51. Figure 6The barrel 51 is provided with a baffle 515 to prevent the heat transfer oil from flowing along the bottom of the barrel 51, so that the heat transfer oil can flow smoothly along the Figure 6 Move in the direction of the arrow.

[0045] See also Figure 1-Figure 6 As shown, the present invention is a filtering method for a thermal oil furnace, and the method is applied to the oil filtering mechanism for a thermal oil furnace as described in the above embodiment, and the method comprises the following steps:

[0046] Step S1: Start the circulation pump 3, so that the circulation pump 3 delivers the heat transfer oil to be filtered from the input pipe 52 to the barrel 51, and the heat transfer oil is filtered through the single-layer filter plate 56;

[0047] Step S2: When the oil residue on the filter plate 56 reaches a certain amount, the heat transfer oil gradually drives the filter plate 56 and the rotating sleeve 55 to rotate, and the filter plate 56 rotates to drive the sliding plate 59 to move. During this process, the transmission rack 511 drives the cam 510 to rotate, and the rotation of the cam 510 gradually presses the transmission plate 512, so that the transmission plate 512 presses the top of the filter plate 56 through the compression spring 513 and the pressure plate 514;

[0048] Step S3: When the filter plate 56 moves to a vertical state, the mounting groove 551 overlaps with the circulation groove 541. At this time, the compression spring 513 rebounds to drive the filter plate 56 to eject downward, so that the filter plate 56 passes through the circulation groove 541 and enters the mounting groove 551 corresponding to the bottom of the rotating sleeve 55. At the same time, the next filter plate 56 rotates to the initial position of the filter plate 56 to replace the filter plate 56.

[0049] like Figure 6-Figure 8 As shown, as a preferred embodiment of the present invention, step S2 specifically includes the following steps:

[0050] Step S21: When the filter plate 56 passes through the circulation groove 541, the weight block 57 on the filter plate 56 presses the pressure rod 63 downward and drives the pressure rod 63 to rotate. The pressure rod 63 rotates and compresses the spring 1 65, so that the pressure rod 63 drives the scraper 62 to rotate through the spring 2 64, and the collection chamber 61 is opened at this time;

[0051] Step S22: When the scraper 62 presses against the two sides of the filter plate 56, the spring 65 rebounds to drive the pressure rod 63 to limit the weight block 57. As the filter plate 56 moves downward, the scraper 62 scrapes off the oil residue on the filter plate 56. The downward movement of the filter plate 56 will drive the oil in the circulation groove 541 to be squeezed downward and enter the collection chamber 61. At this time, the oil will drive the scraped oil residue into the collection chamber 61.

[0052] Step S23: When the scraper 62 finishes cleaning the filter plate 56, the top of the filter plate 56 drives the weight block 57 to move downward synchronously, so that the weight block 57 is separated from the pressure rod 63. At this time, the cleaned filter plate 56 enters the corresponding installation groove 551 at the bottom of the rotating sleeve 55 through the circulation groove 541.

[0053] The implementation principle of the present invention is:

[0054] The circulating pump 3 delivers the heat transfer oil to be filtered from the input pipe 52 to the barrel 51. The heat transfer oil will be filtered through the single-layer filter plate 56. As the use time of the filter plate 56 increases, the oil residue adhering to the filter plate 56 gradually increases, and the resistance of the heat transfer oil passing through the filter plate 56 increases accordingly. When the oil residue on the filter plate 56 reaches a certain amount, the heat transfer oil will gradually drive the filter plate 56 and the rotating sleeve 55 to rotate. The rotation of the filter plate 56 drives the sliding plate 59 to move, so that the sliding plate 59 gradually compresses the reset spring 58. In this process, the transmission rack 511 drives the cam 510 to rotate through the gear transmission. See Figure 5 The rotation of the cam 510 will gradually press the transmission plate 512, so that the transmission plate 512 compresses the compression spring 513 and the pressure plate 514. At this time, the cam 510 presses the top of the filter plate 56 through the compression spring 513. When the filter plate 56 moves to a vertical state, the mounting groove 551 coincides with the circulation groove 541. At this time, the compression spring 513 rebounds and drives the filter plate 56 to eject downward, so that the filter plate 56 and the weight block 57 pass through the mounting groove 551 at the same time. When the filter plate 56 and the weight block 57 pass through the circulation groove 541, the weight block 57 presses the pressure rod 63 downward and drives the pressure rod 63 to rotate. The pressure rod 63 rotates and compresses the spring 1 65. At the same time, the pressure rod 63 drives the scraper 62 to rotate through the spring 2 64, so that the scraper 62 presses the filter plate 56. On both sides, the collecting chamber 61 is opened at this time, and when the weight block 57 moves to a certain position, the spring 65 rebounds and drives the pressure rod 63 to abut against the weight block 57, so that it limits the weight block 57. As the filter plate 56 moves downward, the scraper 62 scrapes off the oil residue on the filter plate 56. The downward movement of the filter plate 56 will drive the oil in the circulation groove 541 to be squeezed downward and enter the collecting chamber 61. At this time, the oil will drive the scraped oil residue to enter the collecting chamber 61, so as to clean the oil residue of the filter plate 56. When the scraper 62 finishes cleaning the filter plate 56, the top of the filter plate 56 drives the weight block 57 to move downward synchronously, so that the weight block 57 is separated from the pressure rod 63. At this time, the cleaned filter plate 56 passes through the circulation groove 541 and enters the mounting groove 551 at the bottom.

[0055] At the same time, the next filter plate 56 rotates to the initial position of the filter plate 56 to replace the filter plate 56. Repeat the above movement, when the amount of oil residue adhering to the filter plate 56 reaches a certain value, the next filter plate 56 will automatically replace the filter plate 56 adhering to the oil residue, ensuring that only a single filter plate 56 filters the thermal oil, ensuring the permeability of the thermal oil, and at the same time, the filter plate 56 is automatically replaced, the filtering efficiency of the thermal oil is improved, and the influence of the oil residue on the filter plate 56 on the flow rate of the thermal oil is reduced.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. An oil filter mechanism for a thermal oil furnace, characterized in that: It comprises a frame (1), and a control component (2) and a circulation pump (3) mounted on the frame (1), wherein the control component (2) is connected to the circulation pump (3), and the circulation pump (3) is connected to the heating barrel (4) via a circulation filter component (5); The circulation filter assembly (5) comprises a barrel body (51) and a filter plate (56). The barrel body (51) is connected to a circulation pump (3) and a heating barrel (4) via an input pipe (52) and an output pipe (53), respectively. A fixed column (54) is fixedly installed in the barrel body (51). A rotating sleeve (55) is rotatably installed in the barrel body (51). A gap exists between the fixed column (54) and the rotating sleeve (55). A circulation groove (541) is vertically provided on the fixed column (54). An even number of mounting grooves (551) are provided on the circumference of the rotating sleeve (55). The filter plate (56) is installed in one of two opposite mounting grooves (551). One end of the filter plate (56) is located in the gap between the fixed column (54) and the rotating sleeve (55) for sliding. The width of the circulation groove (541) is greater than that of the mounting groove (551). When the filter plate (56) rotates to a vertical position, the filter plate (56) passes through the circulation groove (541). A repositionable sliding plate (59) is slidably mounted on the barrel body (51), the sliding plate (59) abuts against one end of the filter plate (56), a transmission rack (511) is mounted on the barrel body (51), a cam (510) is rotatably mounted on the sliding plate (59), the transmission rack (511) is connected to the cam (510) via a gear, an outer wall of the cam (510) abuts against a transmission plate (512), the transmission plate (512) is connected to a pressure plate (514) via a compression spring (513), and the pressure plate (514) contacts the top of the filter plate (56); The sliding plate (59) is connected to the inner wall of the barrel body (51) via a return spring (58); The filter plate (56) is provided with a weight block (57), which is located in a gap between the fixed column (54) and the rotating sleeve (55) and slides therein. When the filter plate (56) is rotated to a vertical position, the filter plate (56) and the weight block (57) pass through the circulation groove (541).

2. The oil filter mechanism for a thermal oil furnace according to claim 1, characterized in that: A material collection assembly (6) is installed inside the circulation groove (541), and the material collection assembly (6) comprises a collection chamber (61) and a scraper (62). The scraper (62) is connected to a pressure rod (63) via a rotating shaft. A second spring (64) is connected between the scraper (62) and the pressure rod (63). The pressure rod (63) is connected to the inner wall of the circulation groove (541) via a first spring (65).

3. The oil filter mechanism for a thermal oil furnace according to claim 1, characterized in that: The input pipe (52) and the output pipe (53) are integrally located in the upper half of the barrel body (51), and a baffle (515) is installed in the barrel body (51).

4. A method for filtering oil in a thermal oil furnace, characterized in that: The method is applied to the oil filtering mechanism for a thermal oil furnace as described in any one of claims 1 to 3 above, and the method comprises the following steps: Step S1: starting the circulation pump (3) so that the circulation pump (3) delivers the heat transfer oil to be filtered from the input pipe (52) to the barrel (51), and the heat transfer oil is filtered through the single-layer filter plate (56); Step S2: When the oil residue on the filter plate (56) reaches a certain amount, the heat transfer oil gradually drives the filter plate (56) and the rotating sleeve (55) to rotate, and the filter plate (56) rotates to drive the sliding plate (59) to move. During this process, the transmission rack (511) drives the cam (510) to rotate, and the rotation of the cam (510) gradually presses the transmission plate (512), so that the transmission plate (512) presses the top of the filter plate (56) through the compression spring (513) and the pressure plate (514); Step S3: When the filter plate (56) moves to a vertical state, the mounting groove (551) overlaps with the circulation groove (541), and the compression spring (513) rebounds to drive the filter plate (56) to eject downward, so that the filter plate (56) passes through the circulation groove (541) and enters the mounting groove (551) corresponding to the bottom of the rotating sleeve (55). At the same time, the next filter plate (56) rotates to the initial position of the filter plate (56) to replace the filter plate (56).

5. A method for filtering oil in a thermal oil furnace according to claim 4, characterized in that: The step S2 specifically includes the following steps: Step S21: When the filter plate (56) passes through the circulation groove (541), the weight block (57) on the filter plate (56) presses the pressure rod (63) downward and drives the pressure rod (63) to rotate. The pressure rod (63) rotates and compresses the spring 1 (65), so that the pressure rod (63) drives the scraper (62) to rotate through the spring 2 (64). At this time, the collection chamber (61) is opened; Step S22: When the scraper (62) presses against both sides of the filter plate (56), the spring 1 (65) rebounds to drive the pressure rod (63) to limit the weight block (57). As the filter plate (56) moves downward, the scraper (62) scrapes off the oil residue on the filter plate (56). The downward movement of the filter plate (56) drives the oil in the circulation groove (541) to be squeezed downward and enter the collection chamber (61). At this time, the oil drives the scraped oil residue to enter the collection chamber (61); Step S23: When the scraper (62) has finished cleaning the filter plate (56), the top of the filter plate (56) drives the weight block (57) to move downward synchronously, so that the weight block (57) is separated from the pressure rod (63). At this time, the cleaned filter plate (56) passes through the circulation groove (541) and enters the corresponding installation groove (551) at the bottom of the rotating sleeve (55).

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