Hydraulic oil filter assembly convenient to disassemble

Abstract

The hydraulic oil filter assembly comprises a filter seat and a filter element assembly, the filter element assembly is installed in a filter cylinder, the upper portion of the filter cylinder is in threaded connection with the filter seat, a sealing groove is formed in the upper portion of the filter cylinder and located above the threads, a filter cylinder sealing piece is installed between the filter cylinder and the filter seat and located in the sealing groove, and the filter cylinder sealing piece is connected with the filter seat through a thread. A filter element sealing piece is arranged between an upper end cover of the filter element assembly and the filter seat, an oil inlet channel is formed among the filter seat, the filter element assembly and the filter cartridge, and an outlet channel is formed between a central pipe of the filter element assembly and the filter seat. And a safety valve is arranged in the filter seat and between the tail ends of the oil inlet channel and the oil outlet channel. Detachable maintenance is achieved, the filter seat and the filter cartridge can be repeatedly used, only the filter element assembly needs to be replaced, the maintenance cost is effectively reduced, and meanwhile the maintenance efficiency and the filtering work efficiency are improved.

Description

Technical Field

[0001] The invention relates to a filtering system, in particular to a hydraulic oil filter assembly. Background Art

[0002] At present, the hydraulic oil filter assembly generally includes a housing, a filter element assembly, a filter seat, etc. The filter element assembly is composed of an upper end cover, filter paper, a center tube, and a lower end cover. The filter element assembly is installed in the housing, and the housing and the filter seat are fixedly connected and assembled. Disassembly is troublesome and inconvenient. During maintenance, it is generally replaced as a whole. If only the filter element assembly is replaced during disassembly, it is easy to affect the overall sealing performance of the subsequent assembly, thereby reducing the working efficiency and service life of the filter assembly. Summary of the invention

[0003] The purpose of the present invention is to overcome the above technical deficiencies and provide a convenient and quick disassembly hydraulic oil filter assembly with good sealing performance.

[0004] The objective of the present invention is achieved through the following technical scheme: a detachable and portable hydraulic oil filter assembly, comprising a filter seat and a filter element assembly, wherein the filter element assembly is installed in a filter cartridge, the upper part of the filter cartridge is connected to the filter seat by a thread, a sealing groove is provided at the upper part of the filter cartridge and above the thread, a filter cartridge seal is provided between the filter cartridge and the filter seat and in the sealing groove, a filter element seal is provided between the upper end cover of the filter element assembly and the filter seat, an oil inlet channel is formed between the filter seat, the filter element assembly and the filter cartridge, an outlet channel is formed between the center tube of the filter element assembly and the filter seat, and the gap between the upper end cover of the filter element assembly and the filter cartridge is the oil inlet.

[0005] The filter seat is internally threaded and the filter cartridge is externally threaded and connected to each other by threads. A safety valve is installed in the filter seat and between the ends of the oil inlet channel and the oil outlet channel. The bottom of the filter cartridge is hexagonal in shape, which is more convenient for maintenance and disassembly. The outer periphery of the filter paper of the filter element assembly is folded and formed by a steel mesh to maximize the effective filtering area of ​​the filter paper and maximize the filtering of fine particles of hydraulic oil.

[0006] After adopting the technical solution of the present invention, since the upper part of the filter cartridge is connected to the filter seat by threads, it is only necessary to rotate the filter cartridge to separate it from the filter seat during disassembly, so that the filter element assembly can be conveniently replaced. In addition, the filter cartridge seal and filter element seal are added to enhance the sealing performance between the filter seat, filter cartridge and filter element assembly, thereby realizing detachable maintenance. The filter element assembly can be replaced and the filter cartridge can be screwed on again. That is, the filter seat and filter cartridge can be reused during maintenance, and only the filter element assembly needs to be replaced, which effectively reduces the user's maintenance cost and improves the repair and maintenance efficiency and filtration work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1The figure is a schematic diagram of the installation structure of the portable hydraulic oil filter assembly of the present invention. DETAILED DESCRIPTION

[0008] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0009] like Figure 1 As shown, the present invention comprises a detachable and convenient hydraulic oil filter assembly, comprising a filter seat 1 and a filter element assembly 2. The filter element assembly 2 is installed in a filter cartridge 3. The upper part of the filter cartridge 3 is connected to the filter seat 1 by a thread 7. A sealing groove 4 is provided on the upper part of the filter cartridge 3 and above the thread. A filter cartridge seal 5 (located above the thread 7) is installed between the filter cartridge 3 and the filter seat 1 and in the sealing groove 4. A filter element seal 6 (i.e., the connection point between the filter element assembly and the filter seat) is installed between the upper end cover 21 of the filter element assembly 2 and the filter seat 1. An oil inlet channel 11 is formed between the filter seat 1 and the filter element assembly 2 and the filter cartridge 3. An outlet channel 12 is formed between the central tube 23 of the filter element assembly 2 and the filter seat 1. The gap between the upper end cover 21 of the filter element assembly 2 and the filter cartridge 3 is an oil inlet 26 (circular).

[0010] The filter seat 1 is internally threaded and the filter cartridge 3 is externally threaded and connected to each other by a thread 7, which is convenient for spiral assembly. A safety valve 8 is installed in the filter seat 1 and between the ends of the oil inlet channel 11 and the oil outlet channel 12. When the pressure in the filter cartridge and the filter element assembly increases to the limit value, the oil is directly drained through the safety valve. The bottom 31 of the filter cartridge 3 is hexagonal in shape, which is more convenient for maintenance and disassembly (convenient to rotate with a wrench). The periphery of the filter paper 22 (made of imported glass fiber material) of the filter element assembly 2 is folded into shape by a steel wire mesh 25 to enhance its strength and straightness, maximize the effective filtration area of ​​the filter paper, and maximize the filtration of fine particles of hydraulic oil, so that the product's filtration efficiency for 10μm particles can reach more than 99.5%. The filter element assembly 2 is composed of an upper end cover 21, filter paper 22 and a steel wire mesh 25, a center tube 23, and a lower end cover 24. The process of hydraulic oil filtration in the present invention is as follows Figure 1 As shown by the arrow lines in the figure, the hydraulic oil is filtered in sequence from the oil inlet channel 11, the oil inlet hole 26, the filter paper 22 and the wire mesh 25 (filter), the center tube 23, and the oil outlet channel 12; during this period, when the pressure in the filter cartridge and the filter element assembly increases to the limit value, the hydraulic oil is directly opened through the safety valve 8 to drain the oil.

Claims

1. Disassemble the portable hydraulic oil filter assembly, including the filter seat and filter element assembly, which is characterized by: The filter element assembly is installed in a filter cartridge, the upper part of the filter cartridge is connected to the filter seat by a thread, a sealing groove is provided on the upper part of the filter cartridge and above the thread, a filter cartridge seal is installed between the filter cartridge and the filter seat and in the sealing groove, a filter element seal is installed between the upper end cover of the filter element assembly and the filter seat, an oil inlet channel is formed between the filter seat, the filter element assembly and the filter cartridge, an outlet channel is formed between the central tube of the filter element assembly and the filter seat, and the gap between the upper end cover of the filter element assembly and the filter cartridge is the oil inlet.

2. The removable and portable hydraulic oil filter assembly according to claim 1, characterized in that: The filter seat is internally threaded and the filter cartridge is externally threaded and they are connected to each other by threads.

3. The removable and portable hydraulic oil filter assembly according to claim 1 or 2, characterized in that: A safety valve is arranged in the filter seat between the ends of the oil inlet passage and the oil outlet passage.

4. The removable and portable hydraulic oil filter assembly according to claim 3 is characterized in that: The bottom of the filter cartridge is in a hexagonal shape.

5. The removable and portable hydraulic oil filter assembly according to claim 1, characterized in that: The periphery of the filter paper of the filter element assembly is folded into shape by a steel wire mesh.

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