Fire-resistant oil filter

Abstract

The utility model belongs to the field of industrial lubricating oil treatment, and relates to a fire-resistant oil filter which comprises a fire-resistant oil treatment oil way, a fire-resistant oil treatment component and an oil discharge oil way, an oil inlet and an oil outlet communicated with the oil inlet are formed in the fire-resistant oil treatment oil way; the fire-resistant oil treatment assembly is arranged on the fire-resistant oil treatment oil way; and the fire-resistant oil treatment assembly is communicated with the oil outlet through the oil discharge path. The fire-resistant oil filter provided by the utility model has the advantages that the requirements on operators can be reduced, different treatment requirements can be met, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the field of industrial lubricating oil treatment, and relates to a fire-resistant oil filter, in particular to a fire-resistant oil filter that can be used in multiple scenarios. Background Art

[0002] The generator speed control system is crucial to the generator set. The oil quality level of the anti-fire oil in the speed control system is strictly required. The daily maintenance and treatment of anti-fire oil is a must for power generation enterprises. According to the physical and chemical characteristics of anti-fire oil, its maintenance and treatment are currently divided into three parts: (1) regeneration treatment - treatment of its chemical indicators; (2) dehydration treatment - dehydration treatment; (3) impurity removal treatment - treatment of particulate pollutants. At present, there are full-function oil filters on the market, but the automation level is low, requiring operators to understand the oil filter processing process before selecting a single function or a combination of functions according to site requirements. In addition, before replacing the filter element, the oil in the filter must be discharged before replacing the filter element to avoid anti-fire oil spilling when opening the filter, causing waste and environmental pollution. The oil discharge function also requires manual operation. Whether using the oil filter or draining the oil, if any valve is misoperated by the operator, the oil treatment work will be ineffective or cause more serious accidents. Utility Model Content

[0003] In order to solve the above technical problems existing in the background technology, the utility model provides a fire-resistant oil filter which can reduce the requirements on operators, meet different processing needs and improve work efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A fire-resistant oil filter, characterized in that: the fire-resistant oil filter comprises a fire-resistant oil treatment oil circuit, a fire-resistant oil treatment component and an oil discharge oil circuit; the fire-resistant oil treatment oil circuit is provided with an oil inlet and an oil outlet communicating with the oil inlet; the fire-resistant oil treatment component is arranged on the fire-resistant oil treatment oil circuit; the fire-resistant oil treatment component is communicated with the oil outlet through the oil discharge oil circuit.

[0006] The above-mentioned fire-resistant oil treatment component includes a regeneration filter, a dehydration filter and a first-stage impurity removal filter; the oil inlet is connected to the oil outlet through the regeneration filter, the dehydration filter and the first-stage impurity removal filter; the oil inlet is connected to the oil outlet through the dehydration filter and the first-stage impurity removal filter; the oil inlet is connected to the oil outlet through the first-stage impurity removal filter; the regeneration filter, the dehydration filter and the first-stage impurity removal filter are connected to the oil outlet through the oil discharge oil passage respectively.

[0007] The above-mentioned fire-resistant oil filter also includes a first air intake valve, a second air intake valve and a third air intake valve; the first air intake valve is placed on the top of the regeneration filter and is connected to the interior of the regeneration filter; the second air intake valve is placed on the top of the dehydration filter and is connected to the interior of the dehydration filter; the third air intake valve is placed on the top of the first-stage impurity removal filter and is connected to the interior of the first-stage impurity removal filter.

[0008] The above-mentioned fire-resistant oil filter machine also includes a first oil inlet branch and a second oil inlet branch; the oil inlet is connected to the oil outlet through the first oil inlet branch, the dehydration filter and the first-stage impurity removal filter; the oil inlet is connected to the oil outlet through the second oil inlet branch and the first-stage impurity removal filter; the regeneration filter is connected to the oil discharge circuit through the first oil inlet branch; the dehydration filter is connected to the oil discharge circuit through the second oil inlet branch.

[0009] The above-mentioned fire-resistant oil filter also includes an oil inlet valve, a pre-pump filter and an oil pump which are arranged in sequence from front to back on the fire-resistant oil treatment oil circuit; the oil inlet is connected to the oil inlet valve; the oil pump is connected to the regeneration filter; the oil pump is connected to the dehydration filter through the first oil inlet branch; the oil pump is connected to the first-stage impurity removal filter through the second oil inlet branch.

[0010] The above-mentioned fire-resistant oil filter also includes a first solenoid valve, a second solenoid valve and a third solenoid valve; the first solenoid valve is arranged on the fire-resistant oil treatment oil circuit and is placed between the oil pump and the regeneration filter; the second solenoid valve is arranged on the first oil inlet branch; the third solenoid valve is arranged on the second oil inlet branch.

[0011] The above-mentioned fire-resistant oil filter also includes an oil pump check valve and an oil discharge check valve arranged on the fire-resistant oil processing oil circuit; the oil pump is connected to the regeneration filter through the oil pump check valve and the first solenoid valve; the first-stage impurity removal filter is connected to the oil outlet through the oil discharge check valve; the oil pump check valve is connected to the dehydration filter through the first solenoid valve and the second solenoid valve; the oil pump check valve is connected to the first-stage impurity removal filter through the first solenoid valve, the second solenoid valve and the third solenoid valve.

[0012] The above-mentioned oil discharge circuit includes a first oil discharge branch and a second oil discharge branch; the regeneration filter is connected to the oil outlet through the first oil inlet branch, the first oil discharge branch, the oil pump, the oil pump check valve and the second oil discharge branch; the dehydration filter is connected to the oil outlet through the second oil inlet branch, the first oil discharge branch, the oil pump, the oil pump check valve and the second oil discharge branch.

[0013] The fire-resistant oil filter also includes a fourth solenoid valve arranged on the first oil discharge branch line and a fifth solenoid valve arranged on the second oil discharge branch line.

[0014] The fire-resistant oil filter also includes a second-stage impurity removal filter and an oil outlet valve which are connected to the oil outlet.

[0015] The advantages of the utility model are:

[0016] The utility model provides a fire-resistant oil filter, including a fire-resistant oil treatment oil circuit, a fire-resistant oil treatment component and an oil drain oil circuit; the fire-resistant oil treatment oil circuit is provided with an oil inlet and an oil outlet connected with the oil inlet; the fire-resistant oil treatment component is provided on the fire-resistant oil treatment oil circuit; the fire-resistant oil treatment component is connected with the oil outlet through the oil drain oil circuit. The fire-resistant oil filter provided by the utility model can not only partially or comprehensively treat the fire-resistant oil, but also realize easy and thorough oil drainage, which not only reduces the difficulty of operation and the difficulty of the operator's work, but also reduces the harm caused by the leakage of the fire-resistant oil, and greatly improves the treatment efficiency of the fire-resistant oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the fire-resistant oil filter provided by the utility model;

[0018] in:

[0019] 1-Oil inlet valve; 2-Pre-pump filter; 3-Oil pump; 4-Oil pump check valve; 5-Regeneration filter; 6-Dehydration filter; 7-First stage impurity removal filter; 8-Oil discharge check valve; 9-Second stage impurity removal filter; 10-Oil outlet valve; 11-First solenoid valve; 12-Second solenoid valve; 13-Third solenoid valve; 14-Fourth solenoid valve; 15-Fifth solenoid valve; 16-First air inlet valve; 17-Second air inlet valve; 18-Third air inlet valve. DETAILED DESCRIPTION

[0020] See also Figure 1 The utility model provides an anti-oil oil filter, including an anti-oil oil treatment oil circuit, an anti-oil oil treatment component and an oil drain oil circuit; the anti-oil oil treatment oil circuit is provided with an oil inlet and an oil outlet connected with the oil inlet; the anti-oil oil treatment component is provided on the anti-oil oil treatment oil circuit; the anti-oil oil treatment component is connected with the oil outlet through the oil drain oil circuit. The anti-oil oil filter provided by the utility model can ensure the normal treatment of the anti-oil through the anti-oil oil treatment oil circuit, and at the same time, through the oil drain oil circuit, ensure that the residual oil attached to the anti-oil oil treatment component is discharged as cleanly as possible without disassembling the machine, thereby improving the work efficiency.

[0021] The fire-resistant oil treatment component provided by the utility model includes a regeneration filter 5, a dehydration filter 6 and a first-stage impurity removal filter 7, which can perform regeneration, dehydration and / or impurity removal on the fire-resistant oil. The oil inlet is connected to the oil outlet through the regeneration filter 5, the dehydration filter 6 and the first-stage impurity removal filter 7; the oil inlet is connected to the oil outlet through the dehydration filter 6 and the first-stage impurity removal filter 7; the oil inlet is connected to the oil outlet through the first-stage impurity removal filter 7; the regeneration filter 5, the dehydration filter 6 and the first-stage impurity removal filter 7 are connected to the oil outlet through the oil discharge oil passage respectively. In addition, the fire-resistant oil filter machine also includes a first air intake valve 16, a second air intake valve 17 and a third air intake valve 18; the first air intake valve 16 is placed on the top of the regeneration filter 5 and is connected to the inside of the regeneration filter 5; the second air intake valve 17 is placed on the top of the dehydration filter 6 and is connected to the inside of the dehydration filter 6; the third air intake valve 18 is placed on the top of the first-stage impurity removal filter 7 and is connected to the inside of the first-stage impurity removal filter 7.

[0022] In order to facilitate the separate control of the dehydration filter 6 and the first-stage impurity removal filter 7, that is, to dehydrate and remove impurities from the fire-resistant oil respectively, the fire-resistant oil filter provided by the utility model also includes a first oil inlet branch and a second oil inlet branch; the oil inlet is connected to the oil outlet through the first oil inlet branch, the dehydration filter 6 and the first-stage impurity removal filter 7; the oil inlet is connected to the oil outlet through the second oil inlet branch and the first-stage impurity removal filter 7; the regeneration filter 5 is connected to the oil discharge circuit through the first oil inlet branch; the dehydration filter 6 is connected to the oil discharge circuit through the second oil inlet branch.

[0023] Exemplarily, the fire-resistant oil filter also includes an oil inlet valve 1, a pre-pump filter 2 and an oil pump 3 which are arranged in sequence from front to back on the fire-resistant oil treatment oil circuit; the oil inlet is connected to the oil inlet valve 1; the oil pump 3 is connected to the regeneration filter 5; the oil pump 3 is connected to the dehydration filter 6 through the first oil inlet branch; the oil pump 3 is connected to the first-stage impurity removal filter 7 through the second oil inlet branch. The fire-resistant oil filter also includes a first solenoid valve 11, a second solenoid valve 12 and a third solenoid valve 13; the first solenoid valve 11 is arranged on the fire-resistant oil treatment oil circuit and is placed between the oil pump 3 and the regeneration filter 5; the second solenoid valve 12 is arranged on the first oil inlet branch; the third solenoid valve 13 is arranged on the second oil inlet branch.

[0024] When performing oil discharge treatment, in order to avoid the backflow of fire-resistant oil in the fire-resistant oil treatment oil circuit, the fire-resistant oil filter provided by the utility model also includes an oil pump check valve 4 and an oil discharge check valve 8 arranged on the fire-resistant oil treatment oil circuit; the oil pump 3 is connected to the regeneration filter 5 through the oil pump check valve 4 and the first solenoid valve 11; the first-stage impurity removal filter 7 is connected to the oil outlet through the oil discharge check valve 8; the oil pump check valve 4 is connected to the dehydration filter 6 through the first solenoid valve 11 and the second solenoid valve 12; the oil pump check valve 4 is connected to the first-stage impurity removal filter 7 through the first solenoid valve 11, the second solenoid valve 12 and the third solenoid valve 13.

[0025] The oil discharge circuit provided by the utility model includes a first oil discharge branch and a second oil discharge branch; the regeneration filter 5 is connected to the oil outlet through the first oil inlet branch, the first oil discharge branch, the oil pump 3, the oil pump check valve 4 and the second oil discharge branch; the dehydration filter 6 is connected to the oil outlet through the second oil inlet branch, the first oil discharge branch, the oil pump 3, the oil pump check valve 4 and the second oil discharge branch. The fire-resistant oil filter also includes a fourth solenoid valve 14 arranged on the first oil discharge branch and a fifth solenoid valve 15 arranged on the second oil discharge branch.

[0026] Preferably, the fire-resistant oil filter provided by the utility model also includes a second-stage impurity removal filter 9 and an oil outlet valve 10 which are connected to the oil outlet. The structure of the second-stage impurity removal filter 9 is exactly the same as that of the first-stage impurity removal filter 7, and is used for secondary impurity removal when firing or discharging fire-resistant oil, so as to achieve the purpose of further purification.

[0027] The fire-resistant oil filter provided by the utility model can process fire-resistant oil and discharge oil from fire-resistant oil, wherein the fire-resistant oil processing includes impurity removal, dehydration and impurity removal, and regeneration dehydration and impurity removal of fire-resistant oil.

[0028] Combine the following Figure 1 , the different working processes of the fire-resistant oil filter provided by the utility model are described in detail:

[0029] Working method 1: Regeneration, dehydration and impurity removal (i.e. comprehensive treatment of fire-resistant oil)

[0030] When the fire-resistant oil is completely degraded, it is necessary to regenerate, dehydrate and remove impurities from the fire-resistant oil. Under this working condition, the working mode of the fire-resistant oil filter provided by the utility model is specifically: open the oil inlet valve 1, the first solenoid valve 11 and the oil outlet valve 10 of the oil filter, close the second solenoid valve 12, the third solenoid valve 13, the fourth solenoid valve 14 and the fifth solenoid valve 15, and start the oil pump 3. At this time, the fire-resistant oil to be treated passes through the oil inlet valve 1, the pre-pump filter 2, the oil pump 3, the oil pump check valve 4, the first solenoid valve 11, the regeneration filter 5 (to achieve the purpose of regeneration), the dehydration filter 6 (to achieve the purpose of dehydration), the first-stage impurity removal filter 7 (to achieve the first-stage impurity removal treatment), the oil discharge check valve 8, the second-stage impurity removal filter 9 (to achieve the second-stage impurity removal treatment) and the oil outlet valve 10, and finally flows out through the oil outlet after completing the comprehensive treatment of regeneration, dehydration and impurity removal of the fire-resistant oil, thereby achieving the purpose of full-function treatment.

[0031] Working mode 2: Dehydration and impurity removal

[0032] If the chemical index of the fire-resistant oil does not exceed the standard (i.e., no regeneration treatment is required), the most commonly used functions in the maintenance and treatment of the fire-resistant oil are dehydration and impurity removal. Under this working condition, the working method of the fire-resistant oil filter provided by the utility model is as follows: open the oil inlet valve 1, the oil outlet valve 10, the first solenoid valve 11 and the second solenoid valve 12 of the oil filter, close the third solenoid valve 13, the fourth solenoid valve 14 and the fifth solenoid valve 15, and start the oil pump 3. At this time, since the second solenoid valve 12 is opened, the pressure of the first oil inlet branch is less than the pressure of the regeneration filter 5, so the fire-resistant oil flows to the second solenoid valve 12. The complete oil flow direction is: the fire-resistant oil to be treated passes through the oil inlet valve 1, the pre-pump filter 2, the oil pump 3, the oil pump check valve 4, the first solenoid valve 11, the second solenoid valve 12, the dehydration filter 6 (to achieve the dehydration purpose), the first-stage impurity removal filter 7 (to achieve the first-stage impurity removal treatment), the oil discharge check valve 8, the second-stage impurity removal filter 9 (to achieve the second-stage impurity removal treatment) and the oil outlet valve 10 in sequence, and finally flows out through the oil outlet after completing the partial comprehensive treatment of dehydration and impurity removal of the fire-resistant oil, thereby achieving the treatment purposes of dehydration and impurity removal.

[0033] Working method three: impurity removal

[0034] If the chemical index of the fire-resistant oil does not exceed the standard (i.e., no regeneration treatment is required), and the moisture index is also qualified (i.e., no dehydration treatment is required), then only the fire-resistant oil needs to be maintained and treated for impurities. Under this working condition, the working method of the fire-resistant oil filter provided by the utility model is specifically as follows: open the oil inlet valve 1, the oil outlet valve 10, the first solenoid valve 11, the second solenoid valve 12 and the third solenoid valve 13 of the oil filter, close the fourth solenoid valve 14 and the fifth solenoid valve 15, and start the oil pump 3. At this time, since the second solenoid valve 12 and the third solenoid valve 13 are opened, the pressure of the first oil inlet branch is less than the pressure of the regeneration filter 5, and the pressure of the second oil inlet branch is less than the pressure of the dehydration filter 6. Therefore, the regeneration filter 5 and the dehydration filter 6 are bypassed, that is, the fire-resistant oil flows to the second solenoid valve 12 and the third solenoid valve 13 and finally flows to the first-stage impurity removal filter 7. At this time, the anti-oil to be treated passes through the oil inlet valve 1, the pre-pump filter 2, the oil pump 3, the oil pump check valve 4, the first solenoid valve 11, the second solenoid valve 12, the third solenoid valve 13, the first-stage impurity removal filter 7 (to achieve the first-stage impurity removal treatment), the oil discharge check valve 8, the second-stage impurity removal filter 9 (to achieve the second-stage impurity removal treatment) and the oil outlet valve 10 in sequence, and after the impurity removal treatment of the anti-oil is completed, it finally flows out through the oil outlet, thereby achieving the purpose of impurity removal treatment.

[0035] Working mode 4: oil drainage

[0036] When the filter element needs to be replaced, the oil in the filter of the fire-resistant oil filter needs to be drained to avoid the fire-resistant oil from overflowing when the filter is opened. Under this working condition, the working mode of the fire-resistant oil filter provided by the utility model is specifically as follows: close the oil inlet valve 1 and the first solenoid valve 11, open the oil outlet valve 10, the second solenoid valve 12, the third solenoid valve 13, the fourth solenoid valve 14, the fifth solenoid valve 15, the first air inlet valve 16, the second air inlet valve 17 and the third air inlet valve 18, start the oil pump 3, and the fire-resistant oil remaining in the regeneration filter 5 flows out from the oil outlet through the second solenoid valve 12, the third solenoid valve 13, the fourth solenoid valve 14, the oil pump 3, the oil pump check valve 4, the fifth solenoid valve 15, the second stage impurity removal filter 9 and the oil outlet valve 10, and finally the fire-resistant oil remaining in the regeneration filter 5 is reversely drawn away from the regeneration filter 5 to complete the oil discharge process of the regeneration filter 5; the fire-resistant oil remaining in the dehydration filter 6 flows out from the oil outlet through the third solenoid valve 13, the fourth solenoid valve 14, the oil pump 3, the oil pump check valve 4, the fifth solenoid valve 15, the second stage impurity removal filter 9 and the oil outlet valve 10 The oil in the regeneration filter 5, the dehydration filter 6 and the first-stage impurity removal filter 7 are emptied, the oil pump 3 inhales air, and the air passes through the oil pump 3, the oil pump check valve 4, the fifth solenoid valve 15, the second-stage impurity removal filter 9 and the oil outlet valve 10, and finally the anti-oil remaining in the first-stage impurity removal filter 7 is reversely drawn out from the first-stage impurity removal filter 7, completing the oil discharge process of the first-stage impurity removal filter 7; when the residual oil in the regeneration filter 5, the dehydration filter 6 and the first-stage impurity removal filter 7 is emptied, the oil pump 3 inhales air, and the air passes through the oil pump 3, the oil pump check valve 4, the fifth solenoid valve 15, the second-stage impurity removal filter 9 and the oil outlet valve 10, and finally the anti-oil remaining in the second-stage impurity removal filter 9 is blown out from the second-stage impurity removal filter 9 in the forward direction, completing the oil discharge process of the second-stage impurity removal filter 9.

[0037] For example, in the fire-resistant oil filter provided by the utility model, all the solenoid valves, air intake valves, oil intake valves or oil outlet valves can be completed manually or through conventional electrical control means. For example, the various valves used in the utility model can be controlled by PLC, which are all conventional technical means and will not be elaborated here.

Claims

1. A fire-resistant oil filter, characterized in that: The fire-resistant oil filter includes a fire-resistant oil treatment oil circuit, a fire-resistant oil treatment component and an oil discharge oil circuit; the fire-resistant oil treatment oil circuit is provided with an oil inlet and an oil outlet communicating with the oil inlet; the fire-resistant oil treatment component is arranged on the fire-resistant oil treatment oil circuit; the fire-resistant oil treatment component communicates with the oil outlet through the oil discharge oil circuit.

2. The fire-resistant oil filter according to claim 1, characterized in that: The fire-resistant oil treatment component comprises a regeneration filter (5), a dehydration filter (6) and a first-stage impurity removal filter (7); the oil inlet is connected to the oil outlet through the regeneration filter (5), the dehydration filter (6) and the first-stage impurity removal filter (7); the oil inlet is connected to the oil outlet through the dehydration filter (6) and the first-stage impurity removal filter (7); the oil inlet is connected to the oil outlet through the first-stage impurity removal filter (7); the regeneration filter (5), the dehydration filter (6) and the first-stage impurity removal filter (7) are connected to the oil outlet through the oil discharge oil passage.

3. The fire-resistant oil filter according to claim 2, characterized in that: The fire-resistant oil filter also includes a first air intake valve (16), a second air intake valve (17) and a third air intake valve (18); the first air intake valve (16) is disposed on the top of the regeneration filter (5) and is in communication with the interior of the regeneration filter (5); the second air intake valve (17) is disposed on the top of the dehydration filter (6) and is in communication with the interior of the dehydration filter (6); the third air intake valve (18) is disposed on the top of the first-stage impurity removal filter (7) and is in communication with the interior of the first-stage impurity removal filter (7).

4. The fire-resistant oil filter according to claim 3, characterized in that: The fire-resistant oil filter machine also includes a first oil inlet branch and a second oil inlet branch; the oil inlet is connected to the oil outlet through the first oil inlet branch, a dehydration filter (6) and a first-stage impurity removal filter (7); the oil inlet is connected to the oil outlet through the second oil inlet branch and the first-stage impurity removal filter (7); the regeneration filter (5) is connected to the oil discharge circuit through the first oil inlet branch; the dehydration filter (6) is connected to the oil discharge circuit through the second oil inlet branch.

5. The fire-resistant oil filter according to claim 4, characterized in that: The fire-resistant oil filter machine also includes an oil inlet valve (1), a pre-pump filter (2) and an oil pump (3) which are arranged in sequence from front to back on the fire-resistant oil treatment oil circuit; the oil inlet is connected to the oil inlet valve (1); the oil pump (3) is connected to the regeneration filter (5); the oil pump (3) is connected to the dehydration filter (6) through a first oil inlet branch; the oil pump (3) is connected to the first-stage impurity removal filter (7) through a second oil inlet branch.

6. The fire-resistant oil filter according to claim 5, characterized in that: The fire-resistant oil filter also includes a first solenoid valve (11), a second solenoid valve (12) and a third solenoid valve (13); the first solenoid valve (11) is arranged on the fire-resistant oil treatment oil circuit and is placed between the oil pump (3) and the regeneration filter (5); the second solenoid valve (12) is arranged on the first oil inlet branch circuit; and the third solenoid valve (13) is arranged on the second oil inlet branch circuit.

7. The fire-resistant oil filter according to claim 6, characterized in that: The fire-resistant oil filter also includes an oil pump check valve (4) and an oil discharge check valve (8) arranged on the fire-resistant oil treatment oil circuit; the oil pump (3) is connected to the regeneration filter (5) through the oil pump check valve (4) and the first solenoid valve (11); the first-stage impurity removal filter (7) is connected to the oil outlet through the oil discharge check valve (8); the oil pump check valve (4) is connected to the dehydration filter (6) through the first solenoid valve (11) and the second solenoid valve (12); the oil pump check valve (4) is connected to the first-stage impurity removal filter (7) through the first solenoid valve (11), the second solenoid valve (12) and the third solenoid valve (13).

8. The fire-resistant oil filter according to claim 7, characterized in that: The oil discharge circuit comprises a first oil discharge branch and a second oil discharge branch; the regeneration filter (5) is connected to the oil outlet via the first oil inlet branch, the first oil discharge branch, the oil pump (3), the oil pump check valve (4) and the second oil discharge branch; the dehydration filter (6) is connected to the oil outlet via the second oil inlet branch, the first oil discharge branch, the oil pump (3), the oil pump check valve (4) and the second oil discharge branch.

9. The fire-resistant oil filter according to claim 8, characterized in that: The fire-resistant oil filter also includes a fourth solenoid valve (14) arranged on the first oil discharge branch line and a fifth solenoid valve (15) arranged on the second oil discharge branch line.

10. The fire-resistant oil filter according to any one of claims 1 to 9, characterized in that: The fire-resistant oil filter also includes a second-stage impurity removal filter (9) and an oil outlet valve (10) which are in communication with the oil outlet.

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