Anti-air blocking filter

Abstract

The utility model belongs to the technical field of lubricating oil filtering and processing, and relates to an anti-gas blocking filter, comprising a first filter; the first filter comprises a housing, a filter element, an oil inlet pipe, an oil outlet pipe, a bypass pipe and a control valve; the filter element is arranged in the housing along the axial direction of the housing; the oil inlet pipe is connected with the oil outlet pipe through the filter element; one end of the bypass pipe is placed on the top of the housing and connected with the inside of the housing, and the other end is connected with the oil outlet pipe; the control valve is arranged on the bypass pipe. The utility model provides an anti-gas blocking filter that can solve the gas blocking phenomenon and ensure a constant pressure difference of the filter element.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubricating oil filtering and processing, and relates to a filter, in particular to an anti-air blocking filter. Background Art

[0002] Fire-resistant oil regeneration filter is a necessary technical equipment for power generation enterprises to maintain and process fire-resistant oil in speed control system. The regeneration filter of fire-resistant oil filter is equipped with regeneration filter element, and the dehydration filter is equipped with dehydration filter element. The two filter elements are filled with powder or small particle adsorbent with regeneration function. When filtering fire-resistant oil, the resistance is very large, especially when the temperature of fire-resistant oil is low, the resistance is even greater, and it may even exceed the maximum pressure that the inner cylinder of the filter element can withstand, causing the filter element to deform and the adsorbent to leak, causing system fire-resistant oil pollution, which may lead to more serious production accidents. In addition, the greater the pressure, the better the adsorption effect of the adsorbent, so it is the most ideal state to allow the filter element to adsorb and treat the fire-resistant oil under the maximum pressure condition within the allowable pressure range. Furthermore, when the fire-resistant oil filter is running for a long time, the gas dissolved or mixed in the oil will gather in the upper part of the filter. Long-term accumulation will cause most of the filter to be filled with air, which will reduce the utilization rate of the filter element, thus seriously affecting the use effect. This is called gas blocking phenomenon.

[0003] The oil filter machines currently on the market have bypass pipes in the lower or middle parts, and the filter pressure difference is controlled by manually adjusting the filter bypass valve to ensure that the filter element is used within the safe pressure range. However, the viscosity and temperature of fire-resistant oil are poor, and the filter element pressure during the operation of the oil filter machine is very sensitive to the temperature of the fire-resistant oil. This requires operators to pay attention to the pressure and adjust the bypass valve at any time to use the oil filter machine safely and effectively. As for the "gas blockage phenomenon", the only way currently is to rely on operators to regularly open the exhaust valve at the top of the filter to exhaust. Utility Model Content

[0004] In order to solve the above technical problems existing in the background technology, the utility model provides an anti-gas-blocking filter which can solve the gas-blocking phenomenon and ensure a constant pressure difference of the filter element.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An anti-gas blockage filter, characterized in that: the anti-gas blockage filter includes a first filter; the first filter includes a shell, a filter element, an oil inlet pipe, an oil outlet pipe, a bypass pipe and a control valve; the filter element is arranged in the shell along the axial direction of the shell; the oil inlet pipe is connected with the oil outlet pipe through the filter element; one end of the bypass pipe is placed on the top of the shell and connected with the inside of the shell, and the other end is connected with the oil outlet pipe; the control valve is arranged on the bypass pipe.

[0007] The above control valve is a constant pressure valve or a relief valve.

[0008] When the control valve is a constant pressure valve, the constant pressure valve is an adjustable constant pressure valve.

[0009] The anti-air blocking filter further comprises a second filter connected in series with the first filter.

[0010] The structure of the second filter is completely the same as that of the first filter.

[0011] The oil outlet pipe of the first filter is connected to the oil inlet pipe of the second filter.

[0012] The advantages of the utility model are:

[0013] The utility model provides an anti-gas blocking filter, including a first filter; the first filter includes a housing, a filter element, an oil inlet pipe, an oil outlet pipe, a bypass pipe and a control valve; the filter element is arranged in the housing along the axial direction of the housing; the oil inlet pipe is connected with the oil outlet pipe through the filter element; one end of the bypass pipe is placed on the top of the housing and is connected with the inside of the housing, and the other end is connected with the oil outlet pipe; the control valve is arranged on the bypass pipe. The utility model opens a hole in the upper part of the fire-resistant oil filter filter as close to the top as possible, connects a pipeline as a bypass pipeline, and the pipeline is connected to the oil outlet pipeline of the filter. In the middle of the bypass pipeline is an adjustable constant pressure valve. When the filter pressure, that is, the pressure difference borne by the filter element, reaches the set value, the constant pressure valve opens. At this time, the constant pressure valve keeps the filter pressure and the filter element pressure difference constant through the adjusted spring pressure. At the same time, since a certain amount of fire-resistant oil always flows through the bypass pipeline at this time, the air escaping from the oil will also flow out of the filter with the oil flow and flow into the next filter, which also solves the gas blocking phenomenon at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the anti-gas blocking filter provided by the utility model;

[0015] in:

[0016] 1-first filter; 11-filter element; 12-adsorbent; 13-oil inlet pipe; 14-oil outlet pipe; 15-bypass pipe; 16-control valve; 2-second filter. DETAILED DESCRIPTION

[0017] See also Figure 1The utility model provides an anti-gas blocking filter, which is the same as the traditional filter in that it includes a first filter 1; the first filter 1 includes a shell, a filter element 11, an oil inlet pipe 13, an oil outlet pipe 14, a bypass pipe 15 and a control valve 16; the filter element 11 is arranged in the shell along the axial direction of the shell, and the filter element 11 is filled with an adsorbent 12; the oil inlet pipe 13 is connected with the oil outlet pipe 14 through the filter element 11; what is different from the prior art is that one end of the bypass pipe 15 used in the utility model is placed on the top of the shell and connected with the inside of the shell, and the other end is connected with the oil outlet pipe 14, and the control valve 16 is arranged on the bypass pipe 15, that is, the utility model combines the bypass pipe placed in the lower or middle part of the filter in the prior art with the exhaust valve at the upper end of the filter to form a new bypass pipe 15. On the one hand, when discharging the gas dissolved or mixed in the oil gathered at the top of the first filter 1, it is directly introduced into the oil outlet pipe 14 through the bypass pipe 15 and the control valve 16, which not only improves the use efficiency of the filter element 11, but also solves the occurrence of gas blockage and prevents the fire-resistant oil from leaking with the discharge of air; on the other hand, due to the existence of the control valve 16, when the filter pressure, that is, the pressure difference borne by the filter element, reaches the set value, the control valve 16 opens. At this time, the control valve 16 keeps the filter pressure and the filter element pressure difference constant through the adjusted spring pressure.

[0018] In order to keep the pressure of the filter and the pressure difference of the filter element 11 constant, the control valve 16 used in the present invention is a constant pressure valve or a relief valve. Exemplarily, when the control valve 16 is a constant pressure valve, the constant pressure valve is an adjustable constant pressure valve.

[0019] In addition, in order to improve the filtering effect, the anti-gas blocking filter provided by the utility model further includes a second filter 2 connected in series with the first filter 1, or may further include a third filter, ..., an Nth filter. Exemplarily, the structure of the second filter 2 is exactly the same as that of the first filter 1, and exemplary, the oil outlet pipe 14 of the first filter 1 is connected to the oil inlet pipe of the second filter 2.

Claims

1. An anti-gas blocking filter, characterized in that: The anti-gas blocking filter comprises a first filter (1); the first filter (1) comprises a housing, a filter element (11), an oil inlet pipe (13), an oil outlet pipe (14), a bypass pipe (15) and a control valve (16); the filter element (11) is arranged in the housing along the axial direction of the housing; the oil inlet pipe (13) is connected to the oil outlet pipe (14) through the filter element (11); one end of the bypass pipe (15) is placed on the top of the housing and is connected to the inside of the housing, and the other end is connected to the oil outlet pipe (14); the control valve (16) is arranged on the bypass pipe (15).

2. The anti-air blocking filter according to claim 1, characterized in that: The control valve (16) is a constant pressure valve or a relief valve.

3. The anti-air blocking filter according to claim 2, characterized in that: When the control valve (16) is a constant pressure valve, the constant pressure valve is an adjustable constant pressure valve.

4. The anti-air blocking filter according to claim 1, 2 or 3, characterized in that: The anti-air blocking filter further comprises a second filter (2) connected in series with the first filter (1).

5. The anti-air blocking filter according to claim 4, characterized in that: The structure of the second filter (2) is completely the same as that of the first filter (1).

6. The anti-air blocking filter according to claim 5, characterized in that: The oil outlet pipe (14) of the first filter (1) is connected to the oil inlet pipe of the second filter (2).

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