Fuel oil fine filter
By using a breathable sealing ring in the fuel precision filter, the compatibility problems between gas discharge and fuel filtration are solved, smooth gas discharge and effective filtration of fuel impurities are achieved, and the normal operation of the engine is ensured.
Patent Information
- Application Number
- CN202422145169.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-09-02
AI Technical Summary
When the existing fuel oil precision filters discharge gas, they cannot effectively prevent unfiltered fuel and impurity particles from entering the downstream, causing the common rail system to stagnate and fail, affecting the normal operation of the engine.
A fuel oil precision filter is designed, using a breathable sealing ring near the first opening, and gas enters the first opening through the breathable sealing ring and discharges downstream; at the same time, when the unfiltered fuel passes through the breathable sealing ring, the breathable sealing ring filters the fuel oil to remove impurities and particles.
The smooth discharge of gas is achieved, unfiltered fuel and impurity particles are prevented from entering the downstream, and the normal operation of the engine is ensured.
Smart Images
Figure CN223004090U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fuel filtration, and particularly to a fuel fine filter. Background Art
[0002] Currently, the fuel fine filter applied on the negative pressure side, that is, the fuel fine filter arranged before the fuel pump, will cause the gas dissolved in the diesel to precipitate due to the pressure change during the working process. If these gases are not discharged in time and accumulate in the fine filter, it is very easy to cause the fuel injection pump to be unable to suck fuel, resulting in difficult engine starting or stalling.
[0003] In the related art, a small hole can be set at the top of the filter element, and the gas can be discharged to the downstream through this small hole. However, since no filter paper is set in the small hole and the aperture of the small hole is relatively large, not only the gas can pass through this small hole, but also the unfiltered fuel flows to the downstream through this small hole, and the impurities and particles in the fuel will enter the downstream common rail system, resulting in the jamming and failure of the common rail system. Therefore, how to enable the fuel fine filter to allow gas to pass through and not allow unfiltered fuel to pass through has become an urgent problem to be solved. Utility Model Content
[0004] In view of this, the purpose of this application is to provide a fuel fine filter. The fuel fine filter provided by this solution can smoothly discharge the gas to the downstream and avoid the impurity particles of the fuel from entering the downstream, and can ensure the normal operation of the engine. The specific solution is as follows:
[0005] On the one hand, this application provides a fuel fine filter, including:
[0006] A housing and a cover plate arranged on the housing; the cover plate and the housing form an internal space;
[0007] A first opening and a second opening arranged on the cover plate; the first opening is located at the center position of the cover plate, and the second opening is located at the edge position of the cover plate; the fuel flows in from the second opening and flows out from the first opening;
[0008] A filtering component arranged in the internal space; the filtering component extends along the longitudinal direction and is used for filtering the fuel;
[0009] A breathable sealing ring having a plurality of breathable holes; in the longitudinal direction, the breathable sealing ring is located between the cover plate and the filtering component, and in the transverse direction, the breathable sealing ring surrounds the first opening.
[0010] Optionally, the fuel fine filter further includes:
[0011] A limiting structure disposed on the end face of the filtering component; the limiting structure is used to fix the air-permeable sealing ring;
[0012] In the transverse direction, the limiting structure surrounds the air-permeable sealing ring and contacts the air-permeable sealing ring;
[0013] In the longitudinal direction, the height of the limiting structure is less than the height of the air-permeable sealing ring.
[0014] Optionally, the filtering component includes a support component and a filter paper attached to the support component;
[0015] The support component extends in the longitudinal direction, the support component is a hollow structure, and the side wall has a plurality of through holes.
[0016] Optionally, the fuel fine filter further includes:
[0017] In the longitudinal direction, a fixing component located on the end face of the filtering component;
[0018] The fixing component includes a transverse part and a longitudinal part, and the longitudinal part is located at the edge position of the transverse part;
[0019] In the transverse direction, the inner diameter of the fixing component is equal to the size of the filtering component.
[0020] Optionally, there are two fixing components, and each fixing component is respectively located on the two end faces of the filtering component.
[0021] Optionally, in the longitudinal direction, the support component is disposed opposite to the first opening, and in the transverse direction, the size of the support component is larger than the size of the first opening.
[0022] Optionally, the fuel fine filter further includes:
[0023] In the longitudinal direction, an elastic component located between the bottom of the housing and the filtering component.
[0024] Optionally, the elastic component is disposed opposite to the first opening.
[0025] Optionally, the air-permeable sealing ring is a felt sealing ring.
[0026] Optionally, there are a plurality of second openings, and the plurality of second openings are symmetrically distributed along the central position of the cover plate.
[0027] An embodiment of the present application provides a fuel fine filter, which includes a housing and a cover plate arranged on the housing; the cover plate and the housing form an internal space; a first opening and a second opening arranged on the cover plate; the first opening is located at the center position of the cover plate, and the second opening is located at the edge position of the cover plate; fuel flows in from the second opening and flows out from the first opening; a filtering component arranged in the internal space; the filtering component extends along the longitudinal direction and is used for filtering fuel; a breathable sealing ring with a plurality of breathable holes; in the longitudinal direction, the breathable sealing ring is located between the cover plate and the filtering component, and in the transverse direction, the breathable sealing ring surrounds the first opening. In this way, the breathable sealing ring is located near the first opening and is relatively high in position, and since gas also exists above due to its low density, the gas accumulated during the operation of the fuel fine filter can enter the first opening through the breathable sealing ring and be discharged downstream, avoiding difficult engine startup or flameout. In addition, when unfiltered fuel enters the first opening through the breathable sealing ring, the breathable sealing ring can filter the fuel, thereby filtering out impurities and particles in the fuel, and thus preventing impurities from flowing into the downstream. In short, the fuel fine filter provided by this solution can smoothly discharge gas downstream and also prevent impurity particles of fuel from entering the downstream, ensuring the normal operation of the engine. Description of the Drawings
[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0029] Figure 1 Fig. shows a schematic structural diagram of a fuel fine filter provided by an embodiment of the present application;
[0030] Figure 2 Fig. shows a schematic structural diagram of another fuel fine filter provided by an embodiment of the present application. Detailed Embodiments
[0031] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will give a detailed description of the specific embodiments of the present application in conjunction with the drawings.
[0032] Many specific details are set forth in the following description in order to fully understand the present application, but the present application can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.
[0033] Secondly, the present application will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present application in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present application herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.
[0034] For the convenience of understanding, a fuel fine filter provided by an embodiment of the present application will be described in detail below with reference to the accompanying drawings.
[0035] Reference Figure 1 As shown, it is a schematic structural diagram of a fuel fine filter provided by an embodiment of the present application. The fuel fine filter includes a housing 101, a cover plate 102, a first opening 103, a second opening 104, a filtering component 105, and a breathable sealing ring 106.
[0036] The fuel fine filter has a housing 101, and the shape of the housing 101 is not specifically limited. It can be a cuboid or other irregular shapes. A cover plate 102 is provided on the housing 101. The cover plate 102 and the housing 101 form an internal space for arranging the filtering component 105, etc., so as to filter the fuel in the internal space.
[0037] A first opening 103 and a second opening 104 can be provided on the cover plate 102. The first opening 103 is located at the center position of the cover plate 102, and the second opening 104 is located at the edge position of the cover plate 102. The fuel flows in from the second opening 104 and flows out from the first opening 103. That is to say, the fuel can flow into the fuel fine filter from the second opening 104, and after being filtered, it flows out from the first opening 103 and is discharged downstream. The first opening 103 can be located at the exact center position of the cover plate 102, and the second opening 104 can be located around the first opening 103.
[0038] In a possible implementation manner, there are multiple second openings 104, and the multiple second openings 104 are symmetrically distributed along the center position of the cover plate 102. Reference Figure 1 In, there are two second openings 104, which are distributed on the left and right sides of the first opening 103, so that the fuel can be transported from both the left and right sides, improving the fuel intake.
[0039] The fuel fine filter includes a filtering component 105 arranged in the internal space. The filtering component 105 extends in the longitudinal direction and is used for filtering the fuel. Specifically, the filtering component 105 can be placed inside the fuel fine filter, can be placed vertically, and can filter impurities and particles in the fuel to prevent them from flowing downstream.
[0040] The breathable sealing ring 106 is a sealing ring with breathability, having a plurality of breathable holes for allowing gas to pass through. In the longitudinal direction, the breathable sealing ring 106 is located between the cover plate 102 and the filtering component 105. In the transverse direction, the breathable sealing ring 106 surrounds the first opening 103. That is, the breathable sealing ring 106 is sandwiched between the cover plate 102 and the filtering component 105 and surrounds the first opening 103. The breathable sealing ring 106 can be a felt sealing ring. The felt sealing ring has more breathable holes, which can improve the filtering effect on fuel. In addition, it can also achieve the sealing between the cover plate 102 and the filtering component 105. The felt sealing ring has a simple structure and lower cost.
[0041] In short, the gas in the fuel enters from the second opening 104, passes through the breathable sealing ring 106 and enters the first opening 103, and then flows downstream. After most of the fuel enters from the second opening 104, it will pass through the filtering component 105 for filtration and then be discharged through the first opening 103. And a small part of the fuel may not pass through the filtering component 105. That is, after a small part of the fuel enters from the second opening 104, it flows to the first opening 103 after passing through the breathable sealing ring 106. The multiple breathable holes in the breathable sealing ring 106 will have a certain filtering effect on the fuel, so that the impurities in this part of the fuel will also be greatly reduced, thereby improving the purity of the fuel flowing to the downstream system.
[0042] Reference Figure 2 As shown, it is a schematic structural diagram of another fuel fine filter provided by the embodiment of the present application. Figure 2 In the right half of the filtering component 105 in [[ ]], it is a cut-away structure, and the left half of the filtering component 105 is not cut away. Taking the right half of the filtering component 105 as an example for description. Although Figure 1 and Figure 2 The drawing of some details in [[ ]] is different, but their structures are exactly the same.
[0043] In short, the breathable sealing ring 106 is located near the first opening 103 and is relatively high. And the gas will also exist above due to its low density. Thus, the gas accumulated during the operation of the fuel fine filter can enter the first opening 103 through the breathable sealing ring 106 and be discharged downstream, avoiding difficult engine starting or stalling. In addition, when the unfiltered fuel enters the first opening 103 through the breathable sealing ring 106, the breathable sealing ring 106 can filter the fuel, thereby filtering out impurities and particles in the fuel, thus avoiding impurities flowing into the downstream. In short, the fuel fine filter provided by this solution can smoothly discharge the gas downstream and also prevent the impurity particles of the fuel from entering the downstream, ensuring the normal operation of the engine.
[0044] In a possible implementation, the fuel fine filter further includes a limiting structure 107 disposed on the end face of the filtering component 105. The limiting structure 107 is used to fix the breathable sealing ring 106. In the lateral direction, the limiting structure 107 surrounds the breathable sealing ring 106 and is in contact with the breathable sealing ring 106. In the longitudinal direction, the height of the limiting structure 107 is less than the height of the breathable sealing ring 106.
[0045] Specifically, in order to prevent the breathable sealing ring 106 from moving, a limiting structure 107 can be provided around the breathable sealing ring 106. The limiting structure 107 can be a protruding structure to block the movement of the breathable sealing ring 106. In the horizontal direction, the limiting structure 107 is located around and adjacent to the breathable sealing ring 106. In the vertical direction, the height of the limiting structure 107 is relatively small and lower than the height of the breathable sealing ring 106, so as to prevent blocking the gas passing through the breathable sealing ring 106 and avoid accumulating gas inside the fuel fine filter, ensuring that the gas can be smoothly discharged through the breathable sealing ring 106.
[0046] In a possible implementation, the filtering component 105 can include a support component 1051 and a filter paper 1052 attached to the support component 1051. The support component 1051 extends in the longitudinal direction. The support component 1051 is a hollow structure and its side wall has a plurality of through holes.
[0047] Specifically, the filtering component 105 can be composed of the support component 1051 and the filter paper 1052. The support component 1051 can be located at the middle position of the fuel fine filter. For example, it can be a support column. The filter paper 1052 is pasted on the support component 1051, so that the support component 1051 can make the filter paper 1052 lie flat on its surface. In this way, impurities in the fuel can be filtered out when the fuel passes through the filter paper 1052. The filtered fuel then flows into the interior of the support component 1051 through the through holes on the side wall of the support component 1051 and flows out through the first opening 103. Thus, the filtration of the fuel is achieved.
[0048] In a possible implementation, the fuel fine filter can further include a fixing component 108 disposed on the end face of the filtering component 105 in the longitudinal direction. The fixing component 108 is used to fix the filter paper 1052.
[0049] The fixing component 108 may include a transverse portion 1081 and a longitudinal portion 1082. The transverse portion 1081 extends in the horizontal direction, and the longitudinal component extends in the vertical direction. The longitudinal portion 1082 is located at the edge position of the transverse portion 1081. That is, the fixing component 108 can be a lid-like structure. In the transverse direction, the inner diameter of the fixing component 108 is equal to the size of the filtering component 105. In this way, when the fixing component 108 is installed on the filtering component 105, the fixing component 108 can tightly fix the filter paper 1052 to prevent the filter paper 1052 from falling off the support component 1051.
[0050] In a possible implementation, there are two fixing components 108, and each fixing component 108 is respectively located on the two end faces of the filtering component 105. The filtering component 105 has upper and lower end faces. By arranging the fixing component 108 on each end face, the filter paper 1052 can be fixed from both ends to prevent the filter paper 1052 from falling off.
[0051] In a possible implementation, in the longitudinal direction, the support component 1051 is disposed opposite to the first opening 103, that is, the inner hollow area of the support component 1051 is opposite to the first opening 103. Thus, the filtered fuel can flow more quickly to the first opening 103 through the inside of the support component 1051, improving the filtering efficiency. And in the transverse direction, the size of the support component 1051 is larger than the size of the first opening 103, that is, the width of the support component 1051 is larger than the width of the first opening 103. Thus, it can play a certain role in fixing the air-permeable sealing ring 106, provide a sufficiently large and stable plane for the placement of the air-permeable sealing ring 106, and can also prevent the fuel from flowing directly to the first opening 103 without being filtered if the support component 1051 is too narrow.
[0052] In a possible implementation, the fuel fine filter may further include an elastic component 109 located between the bottom of the housing 101 and the filtering component 105 in the longitudinal direction. Refer to Figure 1 and 2 As shown, the support component 1051 can support the filtering component 105. The support component 1051 can be a spring, for example. Sufficient spring force can ensure reliable sealing among the filtering component 105, the air-permeable sealing ring 106, and the cover plate 102.
[0053] In a possible implementation, the elastic component 109 can be disposed opposite to the first opening 103, so that the elastic component 109 can support the central area of the filtering component 105 to ensure the balance of the filtering component 105.
[0054] An embodiment of the present application provides a fuel fine filter, which includes a housing and a cover plate arranged on the housing; the cover plate and the housing form an internal space; a first opening and a second opening arranged on the cover plate; the first opening is located at the center position of the cover plate, and the second opening is located at the edge position of the cover plate; fuel flows in from the second opening and flows out from the first opening; a filtering component arranged in the internal space; the filtering component extends in the longitudinal direction and is used for filtering fuel; a breathable sealing ring having a plurality of breathable holes; in the longitudinal direction, the breathable sealing ring is located between the cover plate and the filtering component, and in the transverse direction, the breathable sealing ring surrounds the first opening. In this way, the breathable sealing ring is located near the first opening and is relatively high in position, and since gas also exists above due to its low density, the gas accumulated during the operation of the fuel fine filter can enter the first opening through the breathable sealing ring and be discharged downstream, avoiding difficult engine starting or stalling. In addition, when unfiltered fuel enters the first opening through the breathable sealing ring, the breathable sealing ring can filter the fuel, thereby filtering out impurities and particles in the fuel, etc., and thus preventing impurities from flowing into the downstream. In short, the fuel fine filter provided by this solution can smoothly discharge gas downstream and also prevent impurity particles of fuel from entering the downstream, ensuring the normal operation of the engine.
[0055] Each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and the key point of each embodiment is to illustrate the differences from other embodiments.
[0056] The above description is only a preferred embodiment of the present application. Although the present application has been disclosed above with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present application, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the protection of the technical solution of the present application.
Claims
1. A fuel fine filter, characterized in that: include: A shell and a cover plate arranged on the shell; the cover plate and the shell form an internal space; A first opening and a second opening are provided on the cover plate; the first opening is located at a center position of the cover plate, and the second opening is located at an edge position of the cover plate; The fuel flows in from the second opening and flows out from the first opening; A filter component is disposed in the internal space; the filter component extends in a longitudinal direction and is used for filtering the fuel; A breathable sealing ring with multiple breathable holes; In the longitudinal direction, the air-permeable sealing ring is located between the cover plate and the filter component, and in the transverse direction, the air-permeable sealing ring surrounds the first opening.
2. The fuel fine filter according to claim 1, characterized in that: The fuel fine filter also includes: A limiting structure is arranged on the end surface of the filter component; the limiting structure is used to fix the air-permeable sealing ring; In the transverse direction, the limiting structure surrounds the breathable sealing ring and contacts the breathable sealing ring; In the longitudinal direction, the height of the limiting structure is smaller than the height of the breathable sealing ring.
3. The fuel fine filter according to claim 1, characterized in that: The filter component includes a support component and filter paper attached to the support component; The supporting component extends along the longitudinal direction, is a hollow structure, and has a side wall with a plurality of through holes.
4. The fuel fine filter according to claim 3, characterized in that: The fuel fine filter also includes: A fixing component located on an end surface of the filter component in the longitudinal direction; The fixing component comprises a transverse portion and a longitudinal portion, wherein the longitudinal portion is located at an edge of the transverse portion; In the transverse direction, the inner diameter of the fixing component is equal to the size of the filtering component.
5. The fuel fine filter according to claim 4, characterized in that: The fixing components include two, and each of the fixing components is located on two end surfaces of the filter component respectively.
6. The fuel fine filter according to claim 3, characterized in that: In the longitudinal direction, the support component is disposed opposite to the first opening, and in the transverse direction, a size of the support component is larger than a size of the first opening.
7. The fuel fine filter according to claim 1, characterized in that: The fuel fine filter also includes: An elastic member is located between the bottom of the housing and the filter member in the longitudinal direction.
8. The fuel fine filter according to claim 7, characterized in that: The elastic component is arranged opposite to the first opening.
9. The fuel fine filter according to claim 1, characterized in that: The air-permeable sealing ring is a felt-type sealing ring.
10. The fuel fine filter according to claim 1, characterized in that: The second openings include a plurality of second openings, and the plurality of second openings are symmetrically distributed along the center position of the cover plate.