Conduction oil carbon deposition filtering device

Abstract

The utility model provides a conduction oil filter carbon deposition device, including: main adjusting plate and conduction oil subassembly, main adjusting plate and auxiliary adjusting plate both pass through sealing bearing movable connection valve post, and main adjusting plate and auxiliary adjusting plate inner cavity close to valve post position fixed connection sealing plate, the heat conduction oil assembly is composed of a main base pipe, a main combined pipe, an auxiliary combined pipe and an auxiliary base pipe, the main base pipe is fixedly connected with a main adjusting plate, the auxiliary base pipe is fixedly connected with an auxiliary adjusting plate, the main base pipe and the main combined pipe are fixedly connected through a fastening ring, and a main filter bag fixedly connected with the side face of the fastening ring is embedded into the main combined pipe; and the two ends of the auxiliary combined pipe are fixedly connected with the main combined pipe and the auxiliary base pipe through locking rings respectively. Through cooperation of the main adjusting plate, the valve column, the heat conduction oil assembly and the auxiliary adjusting plate, the device can conduct multi-stage filtering treatment on carbon deposition in heat conduction oil, and therefore the service life of the heat conduction oil can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon deposit treatment, in particular to a heat-conducting oil carbon deposit filtering device. Background Technique

[0002] Heat-conducting oil is a special type of oil with good thermal stability used for indirectly transferring heat. Heat-conducting oil has the properties of resistance to thermal cracking and chemical oxidation, good heat transfer efficiency, fast heat dissipation, and very good thermal stability. Due to its characteristics such as uniform heating, accurate temperature control, good heat transfer effect, energy saving, convenient transportation and operation, it is widely used in various occasions, greatly reducing the operating pressure and safety requirements of high-temperature heating systems and improving the reliability of systems and equipment; during production, as the temperature of the heat-conducting oil rises, its viscosity will change. If it comes into contact with oxygen in the air during high-temperature operation, it is prone to oxidation, forming coke and carbon deposits, which increases the residual carbon index of the heat-conducting oil, thereby affecting the service life of high-temperature heat-conducting oil and reducing the heat transfer efficiency. However, after the residual carbon index of the heat-conducting oil exceeds the qualified range, the heat-conducting oil will be recycled by the manufacturer or a professional unit as waste oil, and all or part of the heat-conducting oil will be replaced, so that the residual carbon index of the heat-conducting oil is again within the qualified range. However, the replacement cost of the heat-conducting oil is relatively high, which will increase the burden on the enterprise. At the same time, when the common carbon deposit treatment device for heat-conducting oil needs to clean the filtering structure, it is necessary to shut down the circulating pipeline of the heat-conducting oil, which will then affect the corresponding production efficiency, and the loading and unloading process of the filtering structure is not convenient enough, which will prolong the shutdown time of the heat-conducting oil circulating pipeline. Content of the Utility Model

[0003] In order to overcome the defects existing in the prior art, the present utility model provides a heat-conducting oil carbon deposit filtering device to solve the problems raised in the above background technique.

[0004] To achieve the above object, a heat-conducting oil carbon deposit filtering device is provided, including: a main adjusting plate and a heat-conducting oil assembly. Both ends of the heat-conducting oil assembly are respectively connected to an oil inlet pipe and an oil outlet pipe through the main adjusting plate and a sub-adjusting plate. A valve stem is movably connected in the main adjusting plate and the sub-adjusting plate through a sealing bearing, and sealing plates are fixedly connected to positions near the valve stem in the inner cavities of the main adjusting plate and the sub-adjusting plate. The heat-conducting oil assembly is composed of a main base pipe, a main combined pipe, a sub-combined pipe, and a sub-base pipe. The main base pipe is fixedly connected to the main adjusting plate, the sub-base pipe is fixedly connected to the sub-adjusting plate, and the main base pipe and the main combined pipe are fixedly connected through a fastening ring. The main filter bag fixedly connected to the side of the fastening ring is embedded inside the main combined pipe. At the same time, both ends of the sub-combined pipe are respectively fixedly connected to the main combined pipe and the sub-base pipe through locking rings. The main installation ring fixedly connected to the end face of the sub-combined pipe through a groove is connected to a precision filter element embedded inside the sub-combined pipe. And the sub-base pipe end face is fixedly connected to a sub-installation ring through a groove, and the sub-filter bag connected to the sub-installation ring is embedded inside the sub-base pipe.

[0005] Preferably, the main adjustment plate has a rectangular structure, and two groups of heat-conducting oil components are symmetrically connected to both ends of the main adjustment plate. Moreover, the two sealing plates fixedly connected to the inner cavity of the main adjustment plate are both in a concave-shaped structure. The grooves of the sealing plates fit the arc surfaces of the valve posts. At the same time, the through grooves in the valve posts are in an L-shaped structure, and through holes are correspondingly opened on the surfaces of the sealing plates at positions opposite to the through grooves. Additionally, the internal structure of the auxiliary adjustment plate is the same as that of the main adjustment plate.

[0006] Preferably, both the main base pipe and the auxiliary base pipe have a cylindrical structure. Moreover, a threaded structure is opened at one end of the outer arc surface of the main base pipe away from the main adjustment plate, and a threaded structure is opened at one end of the outer arc surface of the auxiliary base pipe away from the auxiliary adjustment plate. At the same time, the groove opened at one end of the auxiliary base pipe away from the auxiliary adjustment plate is in an annular structure.

[0007] Preferably, the fastening ring consists of an outer ring and an inner ring. The outer ring has a cylindrical structure, the inner ring has an annular structure, and the axial section of the fastening ring is in a T-shaped structure. Moreover, two groups of sealing rings are fixedly connected to both sides of the inner ring. At the same time, a main filter bag is fixedly connected to one side of the inner ring away from the main base pipe.

[0008] Preferably, the main filter bag has a cylindrical structure. The axial section of the main filter bag is in a U-shaped structure. Moreover, the size of the outer side surface of the main filter bag is smaller than the size of the inner cavity of the main combined pipe. Threaded structures are opened at both ends of the outer arc surface of the main combined pipe. At the same time, the bottom of the inner cavity of the main filter bag has a conical protrusion, and a support column is fixedly connected to the groove on the lower surface of the main filter bag. The tail end of the support column is fixedly connected to a shaping component.

[0009] Preferably, the shaping component consists of a fixing plate, a fixing ring, and positioning blocks. The fixing ring has an annular structure, and the outer diameter of the fixing ring is adapted to the size of the lower surface of the main filter bag. Moreover, the fixing plate has a cross-shaped structure, and the tail end of the support column is fixedly connected to the fixing plate. At the same time, a plurality of groups of positioning blocks are fixedly connected to the outer arc surface of the fixing ring at equal intervals along the circumferential direction. The positioning blocks fit the inner side surface of the main combined pipe.

[0010] Preferably, two groups of limiting grooves are symmetrically opened at both ends of the outer arc surface of the auxiliary combined pipe. Both groups of limiting grooves have a cylindrical structure. Moreover, two groups of locking rings are sleeved at both ends of the outer arc surface of the auxiliary combined pipe. Limiting rings are fixedly connected to the inner side surfaces of the locking rings at positions opposite to the limiting grooves. At the same time, the inner sides of the two groups of locking rings away from the limiting rings are respectively screwed to the main combined pipe and the auxiliary base pipe. Moreover, the inner cavities of the main installation ring and the auxiliary installation ring are both in a frustum-shaped structure, and sealing rings are fixedly connected to the surfaces of the main installation ring and the auxiliary installation ring.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the cooperation of the main filter bag, precision filter element and secondary filter bag inside the heat transfer oil assembly, the device can perform multi-stage filtration treatment on the carbon deposits in the heat transfer oil, and then can effectively reduce the residual carbon index in the heat transfer oil, assist in extending the service life of the heat transfer oil, reduce the burden on enterprises. At the same time, through the cooperation of the fastening ring, locking ring, main installation ring and secondary installation ring, each pipe fitting inside the heat transfer oil assembly can be conveniently loaded and unloaded, reducing the loading and unloading difficulty of the internal filtration structure of the device. And through the cooperation of the main adjusting plate, valve column, sealing plate and secondary adjusting plate, the two heat transfer oil assemblies can be alternately opened and closed, so as to ensure the normal use of the heat transfer oil circulation pipeline and avoid shutting down the heat transfer oil circulation pipeline when cleaning the filtration structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 It is a top view schematic diagram of an embodiment of the present utility model.

[0014] Figure 3 It is a split schematic diagram of the heat transfer oil assembly of an embodiment of the present utility model.

[0015] Figure 4 It is a side view schematic diagram of the main combined pipe of an embodiment of the present utility model.

[0016] In the figure: 1, inlet oil pipe; 2, main adjusting plate; 3, sealing plate; 4, valve column; 5, heat transfer oil assembly; 6, main base pipe; 7, fastening ring; 8, main filter bag; 9, support column; 10, shaping assembly; 11, main combined pipe; 12, main installation ring; 13, precision filter element; 14, secondary combined pipe; 15, locking ring; 16, secondary installation ring; 17, secondary filter bag; 18, secondary base pipe; 19, secondary adjusting plate; 20, outlet oil pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Refer to Figures 1 to 4As shown in the figure, the utility model provides a heat-conducting oil filter carbon deposit device, which includes: a main adjusting plate 2 and a heat-conducting oil assembly 5. Both ends of the heat-conducting oil assembly 5 are respectively communicated with an oil inlet pipe 1 and an oil outlet pipe 20 through the main adjusting plate 2 and a sub-adjusting plate 19. A valve rod 4 is movably connected in both the main adjusting plate 2 and the sub-adjusting plate 19 through a sealing bearing, and sealing plates 3 are fixedly connected at positions close to the valve rod 4 in the inner cavities of the main adjusting plate 2 and the sub-adjusting plate 19. The heat-conducting oil assembly 5 is composed of a main base pipe 6, a main combined pipe 11, a sub-combined pipe 14 and a sub-base pipe 18. The main base pipe 6 is fixedly connected to the main adjusting plate 2, and the sub-base pipe 18 is fixedly connected to the sub-adjusting plate 19. The main base pipe 6 and the main combined pipe 11 are fixedly connected through a fastening ring 7. The main filter bag 8 fixedly connected to the side of the fastening ring 7 is embedded inside the main combined pipe 11. At the same time, both ends of the sub-combined pipe 14 are respectively fixedly connected to the main combined pipe 11 and the sub-base pipe 18 through locking rings 15. The main mounting ring 12 fixedly connected to the end face of the sub-combined pipe 14 through a groove is connected with a precision filter element 13 embedded inside the sub-combined pipe 14. And the end face of the sub-base pipe 18 is fixedly connected to a sub-mounting ring 16 through a groove, and the sub-filter bag 17 connected to the sub-mounting ring 16 is embedded inside the sub-base pipe 18.

[0019] In this embodiment, the heat-conducting oil is injected into the inside of the main adjusting plate 2 through the oil inlet pipe 1. And with the cooperation of the sealing plate 3 and the valve rod 4, the heat-conducting oil can flow towards one end of the main adjusting plate 2. When the heat-conducting oil passes through the heat-conducting oil assembly 5, the main filter bag 8, the precision filter element 13 and the sub-filter bag 17 inside the heat-conducting oil assembly 5 will successively perform corresponding filtering treatments on the carbon deposits in the heat-conducting oil, thereby effectively reducing the residual carbon index in the heat-conducting oil and prolonging the service life of the heat-conducting oil. The heat-conducting oil that has passed through multiple-stage filtering will flow into the oil outlet pipe 20 through the sub-adjusting plate 19 and the corresponding valve rod 4 to realize the circulating flow of the heat-conducting oil. When the internal filtering structure of the heat-conducting oil assembly 5 needs to be cleaned, the valve rods 4 in the main adjusting plate 2 and the sub-adjusting plate 19 are respectively rotated. The valve rod 4 only rotates 90 degrees under the limitation of the limiting structure, so that the heat-conducting oil flowing in from the oil inlet pipe 1 will flow towards the other end of the main adjusting plate 2. Then the heat-conducting oil can be multi-stage filtered through the new heat-conducting oil assembly 5, and the heat-conducting oil assembly 5 can be in a shutdown state. After that, the locking ring 15 is rotated, and the locking ring 15 is reset under the push of the thread structure, and then the fixed connection between the sub-combined pipe 14 and the main combined pipe 11 and the sub-base pipe 18 is released. After removing the sub-combined pipe 14, the precision filter element 13 connected to the main mounting ring 12 and the sub-filter bag 17 connected to the sub-mounting ring 16 can be quickly removed. Then, by respectively rotating the fastening ring 7 and the main combined pipe 11, the disassembly between the main base pipe 6, the fastening ring 7 and the main combined pipe 11 can be realized, which is convenient for taking out the main filter bag 8 and improving the cleaning efficiency of the filtering structure of the device.

[0020] As a preferred embodiment, the main adjusting plate 2 is in a rectangular structure, and two groups of heat-conducting oil components 5 are symmetrically connected to both ends of the main adjusting plate 2. Moreover, both sealing plates 3 fixedly connected to the inner cavity of the main adjusting plate 2 are in a concave-shaped structure, and the grooves of the sealing plates 3 are fitted to the arc surfaces of the valve columns 4. At the same time, the through grooves in the valve columns 4 are in an L-shaped structure, and through holes are correspondingly formed in the positions of the sealing plates 3 corresponding to the through grooves on the surface. Additionally, the internal structure of the auxiliary adjusting plate 19 is the same as that of the main adjusting plate 2.

[0021] In this embodiment, as Figure 1 and Figure 2 , the cooperation between the sealing plates 3 and the valve columns 4 enables the heat-conducting oil to selectively flow to one end of the main adjusting plate 2 according to actual needs, ensuring that the two groups of heat-conducting oil components 5 connected to the main adjusting plate 2 can be in a state of one open and one closed, avoiding truncating the flow of the heat-conducting oil during the process of cleaning the filtering structure.

[0022] As a preferred embodiment, both the main base pipe 6 and the auxiliary base pipe 18 are in a cylindrical structure. Moreover, a threaded structure is formed at one end of the outer arc surface of the main base pipe 6 away from the main adjusting plate 2, and a threaded structure is formed at one end of the outer arc surface of the auxiliary base pipe 18 away from the auxiliary adjusting plate 19. At the same time, the groove formed at one end of the auxiliary base pipe 18 away from the auxiliary adjusting plate 19 is in an annular structure.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 3 , the settings of the main base pipe 6 and the auxiliary base pipe 18 enable the main combined pipe 11 and the auxiliary combined pipe 14 to conveniently connect the main adjusting plate 2 and the auxiliary adjusting plate 19, ensuring that the heat-conducting oil can stably flow through the heat-conducting oil components 5.

[0024] As a preferred embodiment, the fastening ring 7 is composed of an outer ring and an inner ring. The outer ring is in a cylindrical structure, the inner ring is in an annular structure, and the axial section of the fastening ring 7 is in a T-shaped structure. Moreover, two groups of sealing rings are fixedly connected to both sides of the inner ring, and a main filter bag 8 is fixedly connected to one side of the inner ring away from the main base pipe 6.

[0025] In this embodiment, as Figure 1 and Figure 3 , threaded structures are formed at both ends of the inner side surface of the outer ring in the fastening ring 7, enabling the two ends of the outer ring to be respectively screwed to the main base pipe 6 and the main combined pipe 11, improving the convenience of loading and unloading the heat-conducting oil components 5.

[0026] As a preferred embodiment, the main filter bag 8 is in a cylindrical structure. The axial section of the main filter bag 8 is in a U-shaped structure. Moreover, the size of the outer side surface of the main filter bag 8 is smaller than the size of the inner cavity of the main combined pipe 11. Threaded structures are provided at both ends of the outer arc surface of the main combined pipe 11. Meanwhile, the bottom of the inner cavity of the main filter bag 8 is in a conical protrusion. At the same time, a support column 9 is fixedly connected to the groove at the lower surface of the main filter bag 8, and the tail end of the support column 9 is fixedly connected to the shaping component 10.

[0027] In this embodiment, as Figure 1 and Figure 3 show, the size of the main filter bag 8 is smaller than the size of the inner cavity of the main combined pipe 11. Therefore, it can effectively increase the filtering area of the main filter bag 8 in the inner cavity of the main combined pipe 11. Through the conical protrusion at the bottom of the main filter bag 8, the probability that the main filter bag 8 is completely blocked can be effectively reduced, thereby reducing the frequency of cleaning the filtering structure of this device.

[0028] As a preferred embodiment, the shaping component 10 is composed of a fixing plate, a fixing ring, and positioning blocks. The fixing ring is in a circular ring structure. The outer diameter of the fixing ring is adapted to the size of the lower surface of the main filter bag 8. Moreover, the fixing plate is in a cross-shaped structure. The tail end of the support column 9 is fixedly connected to the fixing plate. At the same time, a plurality of groups of positioning blocks are fixedly connected to the outer arc surface of the fixing ring at equal intervals along the circumferential direction. The positioning blocks are attached to the inner side surface of the main combined pipe 11.

[0029] In this embodiment, as Figure 1 and Figure 3 show, the structural setting of the shaping component 10 can assist in enhancing the structural strength of the bottom of the main filter bag 8, avoiding the problem of deformation of the structure at the bottom of the main filter bag 8. And the cooperation between the shaping component 10 and the support column 9 can ensure the stability of the conical structure at the bottom of the main filter bag 8, avoiding the problem that the protruding structure is washed away by the heat-conducting oil.

[0030] As a preferred embodiment, two groups of limiting grooves are symmetrically provided at both ends of the outer arc surface of the auxiliary combined pipe 14. Both groups of limiting grooves are in a cylindrical structure. Moreover, two groups of locking rings 15 are sleeved at both ends of the outer arc surface of the auxiliary combined pipe 14. Limiting rings are fixedly connected to the positions of the inner side surfaces of the two groups of locking rings 15 relative to the limiting grooves. And the inner side surfaces of the two groups of locking rings 15 away from the limiting rings are respectively screwed to the main combined pipe 11 and the auxiliary base pipe 18. At the same time, the inner cavities of the main mounting ring 12 and the auxiliary mounting ring 16 are both in a frustum shape structure. And sealing rings are fixedly connected to the surfaces of the main mounting ring 12 and the auxiliary mounting ring 16.

[0031] In this embodiment, as Figure 1 and Figure 3, the sizes of the limiting groove and the limiting ring are adapted to each other, which can effectively limit the movement range of the locking ring 15 and prevent the locking ring 15 from accidentally detaching from the outer side of the secondary combined pipe 14. Moreover, when the two groups of locking rings 15 are respectively screwed to the main combined pipe 11 and the secondary base pipe 18, they can also assist in enhancing the sealing performance of the two ends of the secondary combined pipe 14. At the same time, the filtration pore diameters of the main filter bag 8, the precision filter element 13, and the secondary filter bag 17 decrease in sequence. Through multi-stage filtration treatment, it can not only effectively reduce the carbon content in the heat-conducting oil, but also reduce the cleaning frequency of the internal filtration structure of the heat-conducting oil assembly 5.

[0032] Through the cooperation of the main adjusting plate 2, the valve column 4, the heat-conducting oil assembly 5, and the secondary adjusting plate 19, the heat-conducting oil filtering and carbon deposition device of the present utility model can perform multi-stage filtration treatment on the carbon deposition in the heat-conducting oil, thereby effectively extending the service life of the heat-conducting oil. At the same time, through the cooperation of the fastening ring 7 and the locking ring 15, the various pipe fittings inside the heat-conducting oil assembly 5 can be conveniently disassembled and assembled, reducing the difficulty of cleaning the internal filtration structure of the heat-conducting oil assembly 5.

[0033] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A thermal oil filter carbon deposit device, comprising: The main regulating plate (2) and the heat-conducting oil assembly (5), both ends of the heat-conducting oil assembly (5) are respectively communicated with the inlet pipe (1) and the outlet pipe (20) through the main regulating plate (2) and the auxiliary regulating plate (19), and the characteristics are as follows: The valve stem (4) is movably connected in both the main regulating plate (2) and the auxiliary regulating plate (19) through sealed bearings, and sealing plates (3) are fixedly connected at positions close to the valve stem (4) in the inner cavities of the main regulating plate (2) and the auxiliary regulating plate (19). The heat-conducting oil assembly (5) is composed of a main base pipe (6), a main combined pipe (11), an auxiliary combined pipe (14) and an auxiliary base pipe (18). The main base pipe (6) is fixedly connected to the main regulating plate (2), the auxiliary base pipe (18) is fixedly connected to the auxiliary regulating plate (19), and the main base pipe (6) and the main combined pipe (11) are fixedly connected through a fastening ring (7). The main filter bag (8) fixedly connected to the side surface of the fastening ring (7) is embedded inside the main combined pipe (11). At the same time, both ends of the auxiliary combined pipe (14) are respectively fixedly connected to the main combined pipe (11) and the auxiliary base pipe (18) through locking rings (15). The end surface of the auxiliary combined pipe (14) is fixedly connected to the main mounting ring (12) through a groove. The precision filter element (13) connected to the main mounting ring (12) is embedded inside the auxiliary combined pipe (14). And the end surface of the auxiliary base pipe (18) is fixedly connected to the auxiliary mounting ring (16) through a groove. The auxiliary filter bag (17) connected to the auxiliary mounting ring (16) is embedded inside the auxiliary base pipe (18).

2. The carbon deposit filtering device for heat transfer oil according to claim 1, wherein The main regulating plate (2) has a rectangular structure. Two groups of heat-conducting oil assemblies (5) are symmetrically connected at both ends of the main regulating plate (2). The two sealing plates (3) fixedly connected in the inner cavity of the main regulating plate (2) both have a concave-shaped structure. The groove of the sealing plate (3) fits the arc surface of the valve stem (4). At the same time, the through groove in the valve stem (4) has an L-shaped structure, and through holes are correspondingly opened at positions on the surface of the sealing plate (3) opposite to the through groove. And the internal structure of the auxiliary regulating plate (19) is the same as the internal structure of the main regulating plate (2).

3. A carbon deposit filtering device for heat transfer oil according to claim 1, characterized in that, Both the main base pipe (6) and the auxiliary base pipe (18) have a cylindrical structure. A threaded structure is opened at one end of the outer arc surface of the main base pipe (6) far from the main regulating plate (2), and a threaded structure is opened at one end of the outer arc surface of the auxiliary base pipe (18) far from the auxiliary regulating plate (19). At the same time, the groove opened at one end of the auxiliary base pipe (18) far from the auxiliary regulating plate (19) has an annular structure.

4. A carbon deposit filtering device for heat transfer oil according to claim 1, characterized in that, The fastening ring (7) is composed of an outer ring and an inner ring. The outer ring has a cylindrical structure, the inner ring has an annular structure, and the axial section of the fastening ring (7) has a T-shaped structure. Two groups of sealing rings are fixedly connected to both sides of the inner ring. At the same time, the main filter bag (8) is fixedly connected to one side of the inner ring far from the main base pipe (6).

5. A carbon deposit filtering device for heat transfer oil according to claim 1, characterized in that, The main filter bag (8) has a cylindrical structure. The axial section of the main filter bag (8) has a U-shaped structure. The size of the outer side surface of the main filter bag (8) is smaller than the size of the inner cavity of the main combined pipe (11). Threaded structures are opened at both ends of the outer arc surface of the main combined pipe (11). The bottom of the inner cavity of the main filter bag (8) has a conical protrusion. At the same time, a support column (9) is fixedly connected to the groove on the lower surface of the main filter bag (8), and the tail end of the support column (9) is fixedly connected to a shaping component (10).

6. A carbon deposit filtering device for heat transfer oil according to claim 5, characterized in that, The shaping component (10) is composed of a fixing plate, a fixing ring and positioning blocks. The fixing ring is in an annular structure, the outer diameter of the fixing ring is adapted to the size of the lower surface of the main filter bag (8), the fixing plate is in a cross-shaped structure, the tail end of the support column (9) is fixedly connected to the fixing plate, and a plurality of groups of positioning blocks are fixedly connected to the outer arc surface of the fixing ring at equal intervals along the circumferential direction, and the positioning blocks are attached to the inner side surface of the main combined pipe (11).

7. A carbon deposit filtering device for heat transfer oil according to claim 1, characterized in that, Two groups of limiting grooves are symmetrically arranged at both ends of the outer arc surface of the auxiliary combined pipe (14). Both groups of limiting grooves are in a cylindrical structure, and two groups of locking rings (15) are sleeved at both ends of the outer arc surface of the auxiliary combined pipe (14). The inner side surface of the locking ring (15) is fixedly connected to a limiting ring at a position opposite to the limiting groove, and the inner side surfaces of the two groups of locking rings (15) far away from the limiting ring are respectively screwed to the main combined pipe (11) and the auxiliary base pipe (18). At the same time, the inner cavities of the main mounting ring (12) and the auxiliary mounting ring (16) are both in a frustum-shaped structure, and sealing rings are fixedly connected to the surfaces of the main mounting ring (12) and the auxiliary mounting ring (16).

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