Diesel oil filter

Abstract

A diesel oil filter comprises a shell, a filter seat is arranged on the shell, an oil inlet hole and an oil outlet hole are formed in the filter seat, a filter layer is arranged in the shell, the filter layer comprises a filter element assembly, the filter element assembly comprises an upper end cover and a lower end cover, a cylindrical filter element is coaxially arranged between the upper end cover and the lower end cover, a center pipe is arranged in an inner cavity of the cylindrical filter element, and the center pipe is arranged in the inner cavity of the cylindrical filter element. An oil outlet channel is arranged in the upper end cover; as shown in the figure, a water absorption layer is arranged in the central pipe, and the outer side of the filter element assembly is communicated with the oil inlet hole; or the outer side of the cylindrical filter element is sleeved with a water absorption layer. The water absorption layer is used for absorbing water in diesel oil, so that a water level monitoring element and a water drainage element of the diesel oil filter are omitted, the structure is simplified, the occupied space of the filter is reduced, potential fault points are reduced, the overall reliability of the filter is improved, the filter is more convenient and rapid to install and maintain, and the service life of the filter is prolonged. And the daily drainage maintenance, water level detection and drainage element maintenance cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of physics, in particular to a filtering device, in particular to a diesel filter. Background Art

[0002] In the application of modern diesel engines, the performance and stability of the fuel system are crucial to the overall operation of the engine. As an important part of the fuel system, the diesel filter's main function is to filter out impurities and moisture in the fuel. However, traditional diesel filters have some inherent limitations in design and use. First, traditional filters are often complex in structure, including multiple components such as water level monitoring elements and drainage elements, which not only increases the size of the diesel filter and increases the manufacturing cost, but also increases the complexity of maintenance and servicing. Secondly, due to the presence of multiple components such as water level monitoring elements and drainage elements, the installation of the filter is not convenient enough, and its reliability may be affected. Once a failure occurs, it may have a serious impact on the normal operation of the engine. Summary of the invention

[0003] The utility model aims to provide a diesel filter, which aims to solve the technical problems in the prior art that the water level monitoring element and the drainage element cause the diesel filter to be larger in size, less convenient to install and less reliable.

[0004] The utility model provides a diesel filter, comprising a shell, a filter seat is arranged on the shell, an oil inlet hole and an oil outlet hole are arranged on the filter seat, a filter layer is arranged in the shell, the filter layer comprises a filter element assembly, the filter element assembly comprises an upper end cover and a lower end cover, a cylindrical filter element is coaxially arranged between the upper end cover and the lower end cover, the inner cavity of the cylindrical filter element is provided with a center tube, the side wall of the center tube is provided with a channel, and the upper end cover is provided with an oil outlet channel; a water absorption layer is arranged inside the center tube, the outer side of the filter element assembly is connected with the oil inlet hole, and the inner cavity of the water absorption layer is connected with the oil outlet hole through the oil outlet channel; or, a water absorption layer is sleeved on the outer side of the cylindrical filter element, the outer side of the water absorption layer is connected with the oil inlet hole, and the inner cavity of the filter element assembly is connected with the oil outlet hole through the oil outlet channel.

[0005] Furthermore, the water absorbing layer comprises a water absorbing layer shell, a side wall of the water absorbing layer shell is provided with a channel, and water absorbing material is provided in the water absorbing layer shell.

[0006] Furthermore, the water absorbing material of the water absorbing layer is a water absorbing resin.

[0007] Furthermore, the water absorbing layer is an independent component or is a multi-layer composite with the filter layer.

[0008] Compared with the prior art, the utility model has a positive and obvious effect. The utility model adopts a water absorption layer to absorb water in diesel, thereby eliminating the water level monitoring element and drainage element of the diesel filter, simplifying the structure, reducing the space occupied by the filter, reducing potential failure points, improving the overall reliability of the filter, making the installation and maintenance of the filter more convenient and quick, and saving the daily drainage maintenance and water level detection and drainage element repair and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a schematic diagram of an embodiment of a diesel filter.

[0010] Figure 2 It is a three-dimensional schematic diagram of an embodiment of a diesel filter of the utility model.

[0011] Figure 3 The utility model is a three-dimensional schematic diagram of a filter element assembly of an embodiment of a diesel filter.

[0012] Figure 4 This is a schematic diagram of another embodiment of a diesel filter of the present utility model.

[0013] Figure 5 This is a schematic diagram of a water absorption layer of another embodiment of a diesel filter of the utility model.

[0014] Figure 6 The utility model is a three-dimensional schematic diagram of a filter element assembly of another embodiment of a diesel filter.

[0015] Figure 7 The utility model is a cross-sectional schematic diagram of a filter element assembly of another embodiment of a diesel filter.

[0016] Figure 8 The utility model is a three-dimensional schematic diagram of a shell in a diesel filter.

[0017] Fig. 9 The utility model is a cross-sectional schematic diagram of a shell in a diesel filter.

[0018] Fig.10 It is a three-dimensional schematic diagram of another embodiment of a diesel filter of the utility model.

[0019] Fig.11 The utility model is a cross-sectional schematic diagram of another embodiment of a diesel filter. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment. Any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description and is not a limitation on the technical solution of the present invention.

[0021] like Figure 1-Figure 11 As shown, a diesel filter of the utility model comprises a housing 4, a filter seat 1 is arranged on the housing 4, an oil inlet hole 10 and an oil outlet hole 11 are arranged on the filter seat 1, a filter layer is arranged in the housing 4, the filter layer comprises a filter element assembly 3, the filter element assembly 3 comprises an upper end cover 31 and a lower end cover 35, a cylindrical filter element 34 is coaxially arranged between the upper end cover 31 and the lower end cover 35, a central tube 33 is arranged in the inner cavity of the cylindrical filter element 34, a channel is arranged on the side wall of the central tube 33, and an oil outlet channel is arranged in the upper end cover 31; as shown Figure 4 As shown, a water absorbing layer 32 is arranged inside the central tube 33, the outer side of the filter element assembly 3 is connected with the oil inlet hole 10, and the inner cavity of the water absorbing layer 32 is connected with the oil outlet hole 11 through the oil outlet channel; or Figure 7 As shown, the outer side of the cylindrical filter element 34 is provided with a water absorbing layer 32 , the outer side of the water absorbing layer 32 is connected with the oil inlet hole 10 , and the inner cavity of the filter element assembly 3 is connected with the oil outlet hole 11 through the oil outlet channel.

[0022] Furthermore, the water absorbing layer 32 includes a water absorbing layer shell 320 , a side wall of the water absorbing layer shell 320 is provided with a channel 322 , and a water absorbing material 321 is provided in the water absorbing layer shell 320 .

[0023] Furthermore, a first sealing ring 2 is provided between the filter seat 1 and the housing 4 , and the upper end cover 31 is connected to the filter seat 1 via a second sealing ring 30 .

[0024] Furthermore, in another embodiment, a threaded dense plate assembly 5 is arranged between the filter seat 1 and the shell 4, and a threaded cover plate oil inlet hole 50 connected to the oil inlet hole 10 is arranged in the threaded dense plate assembly 5, a third sealing ring 6 is arranged between the upper end cover 31 and the threaded dense plate assembly 5, and a spring 7 is arranged between the lower end cover 35 and the bottom of the shell 1.

[0025] Specifically, the water absorbing material of the water absorbing layer 32 is a water absorbing resin or other materials having a water absorbing function. The water absorbing layer 32 can be an independent component, or can be composited with the filter element component 3 in multiple layers.

[0026] Specifically, the housing 4, filter seat 1, filter element assembly 3, cylindrical filter element 34, water-absorbing material, threaded plate assembly 5, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0027] The working principle of this embodiment is as follows: diesel flows in from the oil inlet hole 10 of the filter seat 1, first passes through the filter element assembly 3 and then passes through the water absorption layer 32, or first passes through the water absorption layer 32 and then passes through the filter element assembly 3. The filter element assembly 3 can filter impurities in the diesel, and the water absorption layer 32 can absorb water in the diesel, which can effectively reduce the impurities and water content in the diesel, improve the working performance of the fuel system, and finally enter the engine through the oil outlet hole 11 of the filter seat 1. In the utility model, the water absorption layer 32 is used to absorb water in the diesel, thereby eliminating the water level monitoring element and drainage element of the diesel filter, simplifying the structure, reducing the space occupied by the filter, reducing potential failure points, improving the overall reliability of the filter, making the installation and maintenance of the filter more convenient and quick, and saving the cost of daily drainage maintenance and water level detection and drainage element repair and maintenance.

Claims

1. A diesel filter, comprising a housing, characterized in that: A filter seat is arranged on the shell, and an oil inlet hole and an oil outlet hole are arranged on the filter seat. A filter layer is arranged in the shell, and the filter layer includes a filter element assembly, and the filter element assembly includes an upper end cover and a lower end cover, and a cylindrical filter element is coaxially arranged between the upper end cover and the lower end cover, and the inner cavity of the cylindrical filter element is provided with a central tube, and a channel is arranged on the side wall of the central tube, and an oil outlet channel is arranged in the upper end cover; a water absorption layer is arranged inside the central tube, and the outer side of the filter element assembly is connected with the oil inlet hole, and the inner cavity of the water absorption layer is connected with the oil outlet hole through the oil outlet channel; or, a water absorption layer is sleeved on the outer side of the cylindrical filter element, and the outer side of the water absorption layer is connected with the oil inlet hole, and the inner cavity of the filter element assembly is connected with the oil outlet hole through the oil outlet channel.

2. A diesel filter according to claim 1, characterized in that: The water absorbing layer comprises a water absorbing layer shell, a side wall of the water absorbing layer shell is provided with a channel, and water absorbing material is arranged in the water absorbing layer shell.

3. A diesel filter according to claim 2, characterized in that: The water absorbing material of the water absorbing layer is a water absorbing resin.

4. A diesel filter according to claim 2, characterized in that: The water absorbing layer is an independent component or a multi-layer composite with the filter layer.

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