Integrated diesel filter

Abstract

The invention discloses an integrated diesel oil filter which comprises a first-stage diesel oil filter, a second-stage diesel oil filter and a diesel oil filter seat, and the first-stage diesel oil filter and the second-stage diesel oil filter are installed on the diesel oil filter seat. The diesel oil filter seat is provided with a first inlet and a second outlet, the first inlet is communicated with an inlet of the first-stage diesel oil filter, an outlet of the first-stage diesel oil filter is communicated with the first outlet, and the first outlet is communicated with an inlet of the second-stage diesel oil filter through a channel in the diesel oil filter seat; an outlet of the second-stage diesel oil filter is communicated with the second outlet; the diesel oil filter is characterized by further comprising a communicating pipe, and the two ends of the communicating pipe are connected with the lower portion of the first-stage diesel oil filter and the lower portion of the second-stage diesel oil filter respectively. The diesel filter has the advantages of being simple in structure, convenient to use, capable of increasing the maximum water capacity and the like.

Description

Technical Field

[0001] The invention relates to the technical field of engines, and in particular to an integrated diesel filter. Background Art

[0002] In the diesel filtration system of heavy-duty diesel commercial vehicles, a two-stage (fine filter + pre-filter) or three-stage (primary pre-filter + secondary pre-filter + fine filter) filtration system is generally used. The fine filter is installed on the oil outlet line of the engine oil pump, and the pre-filter is generally installed on the vehicle beam. For the three-stage filtration system, the installation logic is generally: fuel tank → primary pre-filter → secondary pre-filter → oil pump → fine filter → injection pump, where "→" represents the oil pipe. The existing three-stage diesel filtration system has many components, and the diesel filter is generally arranged in sequence according to the space of the whole vehicle. Due to the limited space of the whole vehicle, it is also difficult to arrange, and there are many pipelines and interfaces in the middle, which increases the risk of oil leakage. For example, the existing patent document CN219910996U discloses a three-stage filtration system for diesel engines arranged separately. Another example is the existing patent document CN209278042U, which discloses a two-stage filtration system with pre-filter + fine filter integrated in series.

[0003] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0004] The (main) purpose of the present invention is to provide an integrated diesel filter which has a novel structure, is convenient for practical use and can increase the water capacity of the diesel filter.

[0005] To this end, the present invention proposes an integrated diesel filter.

[0006] Preferably, the present invention may also have the following technical features:

[0007] An integrated diesel filter comprises a first-stage diesel filter, a second-stage diesel filter and a diesel filter seat, wherein the first-stage diesel filter and the second-stage diesel filter are mounted on the diesel filter seat; the diesel filter seat is provided with a first inlet and a second outlet, wherein the first inlet is communicated with the inlet of the first-stage diesel filter, the outlet of the first-stage diesel filter is communicated with the inlet of the second-stage diesel filter through a channel inside the diesel filter seat; the outlet of the second-stage diesel filter is communicated with the second outlet; the second outlet is connected to a combustion supply system of an engine through an oil pipe, and further comprises a connecting pipe and a water level sensor, wherein the two ends of the connecting pipe are respectively connected to the lower part of the first-stage diesel filter and the lower part of the second-stage diesel filter; the water level sensor is used to warn the water level inside the first-stage diesel filter or the second-stage diesel filter.

[0008] Furthermore, the middle portion of the connecting pipe is bent, and both ends thereof are higher than the middle portion, so that the connecting pipe is bent into a U-shaped structure.

[0009] Furthermore, the diameter of the connecting pipe is greater than 5 mm.

[0010] Furthermore, a drain valve and a first heater are disposed at the bottom of the first-stage diesel filter.

[0011] Furthermore, a water level sensor and a second heater are disposed at the bottom of the second-stage diesel filter.

[0012] Furthermore, the two ends of the connecting pipe are respectively connected to the oil passages of the first heater and the second heater, and the oil passages of the first heater and the second heater are designed with filters. The oil passages of the first heater and the second heater are respectively connected to the bottom of the first stage diesel filter and the bottom of the second stage diesel filter.

[0013] Furthermore, it also includes an electronic oil pump, and the oil passage connecting the diesel filter seat and the electronic oil pump is provided with a one-way valve, and the one-way valve is installed in the diesel filter seat.

[0014] Furthermore, the connecting pipe is a hose.

[0015] Furthermore, the joints at both ends of the connecting pipe are hinged pipe joints, or quick-insert joints, or ferrule-type metal joints.

[0016] Compared with the prior art, the beneficial effects of the present invention include: ① The primary filter and the secondary filter share water level information through the connecting pipe; only one water level sensor and one drain valve are arranged to realize accurate monitoring of the water level; while the technical solution in the industry generally uses two water level sensors and two drain valves, the present invention has a more compact structure and is more economical;

[0017] ②The diesel filter seat is a series oil channel, which can realize the first-level and second-level filtration of particles of different sizes, with higher filtration efficiency and longer service life;

[0018] ③ A connecting pipe interface is added to the heater housing;

[0019] ④ A filter screen is provided on the connecting pipe channel to prevent the channel in the connecting pipe from being blocked, and the filter screen can be easily cleaned when the filter module is replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a forward schematic diagram of the installation position of the present invention;

[0021] Figure 2 yes Figure 1 Schematic diagram;

[0022] Figure 3 yes Figure 1 A three-dimensional schematic diagram from another perspective;

[0023] Figure 4 yes Figure 1 Bottom view of .

[0024] Description of reference numerals:

[0025] 1. The first-stage diesel filter, referred to as the first-stage filter; 2. The second-stage diesel filter, referred to as the second-stage filter; 3. One-way valve; 4. Electronic oil pump; 5. Drain valve; 6. Connecting pipe; 7. Water level sensor; 8. Second heater; 9. Diesel filter seat. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0027] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically stated.

[0028] like Figures 1 to 4An integrated diesel filter shown in the figure comprises a first-stage diesel filter 1, a second-stage diesel filter 2, and a diesel filter seat 9, wherein the first-stage diesel filter 1 and the second-stage diesel filter 2 are mounted on the diesel filter seat 9. The diesel filter seat 9 is provided with a first inlet 91, a first outlet, a second inlet, and a second outlet 92, wherein the first inlet 91 is connected to the inlet of the first-stage diesel filter 1, the outlet of the first-stage diesel filter 1 is connected to the first outlet, the first outlet is connected to the second inlet through a channel inside the diesel filter seat 9; the second inlet is connected to the inlet of the second-stage diesel filter 2; the outlet of the second-stage diesel filter 2 is connected to the second outlet 92; the second outlet 92 is connected to the combustion supply system of the engine through an oil pipe. A connecting pipe 6 is also included, and the two ends of the connecting pipe 6 are respectively connected to the lower part of the first-stage diesel filter 1 and the lower part of the second-stage diesel filter 2. Preferably, the middle part of the connecting pipe 6 is bent, and its two ends are higher than the middle part, so that it is bent into a U-shaped structure.

[0029] The function of this filter is to intercept particles and water in the fuel. The fuel from the fuel tank will first pass through the oil inlet of the diesel filter seat 9 and flow into the filter module in the first-stage diesel filter 1. The fuel after the primary filtration will enter the filter module in the second-stage diesel filter 2 through the oil channel in the diesel filter seat for secondary filtration. After the secondary filtration, the fuel will flow from the oil outlet on the diesel filter seat 9 to the fuel supply system of the engine. The bottom of the first-stage diesel filter 1 is equipped with a drain valve 5 and a first heater 81: the function of the drain valve 5 is to discharge the water filtered out by the first-stage diesel filter 1 at an appropriate time; the function of the first heater 81 is to heat the fuel when the fuel temperature is too low. The bottom of the second-stage diesel filter 2 is equipped with a connecting pipe 6, a water level sensor 7 and a second heater 8: the connecting pipe 6 is a hose, which is used to connect the bottom of the first-stage diesel filter 1 and the second-stage diesel filter 2; the second heater 8 is used to perform secondary heating of the fuel; the water level sensor 7 is used to feedback the water level alarm information to the driver when the water level in the second-stage diesel filter 2 reaches the warning line. In this way, the connecting pipe 6, the first-stage diesel filter 1, and the second-stage diesel filter 2 are connected to form a structure similar to a connecting vessel, so that the water level at the bottom of the first diesel filter 1 and the bottom of the second diesel filter 2 are basically the same, thereby avoiding the situation where the water level of one of the diesel filters is too high. Specifically, in the prior art, since the first-stage diesel filter 1 accumulates water faster than the second-stage diesel filter 2, the water level at the bottom of the first-stage diesel filter 1 rises rapidly, and the water level is significantly higher than the water level at the bottom of the second-stage diesel filter 2, causing the problem of reduced filtration efficiency after the filter paper filtration area of ​​the first-stage diesel filter 1 is covered by water. Adding the connecting pipe 6 plays a role in balancing the water level of the two filters and increasing the total water capacity of the two filters. A one-way valve 3 is arranged in the diesel filter seat 9 to enable the fuel to flow in one direction.

[0030] In the present invention, by adding the use of the connecting pipe 6, the flow direction of the internal fluid is not fixed. When the filter is first put into use, the fuel between the first-stage diesel filter 1 and the second-stage diesel filter 2 can achieve material exchange through the connecting pipe 6 (connecting vessel principle), and can also be achieved through the main oil passage of oil inlet→oil outlet on the diesel filter seat 9. At this time, the fuel flow direction of the integrated filter is "parallel"; after the filter has been used for a period of time, the filtered water has filled the inner cavity of the connecting pipe (water has a greater density than oil and sinks to the bottom), and the fuel of the first-stage diesel filter 1 cannot enter the second-stage diesel filter 2 from the connecting pipe. Then, the fuel between the first-stage diesel filter 1 and the second-stage diesel filter 2 can only achieve material exchange through the main oil passage of oil inlet→oil outlet on the diesel filter seat 9. At this time, the fuel flow direction of the integrated filter is "series". Due to the connecting vessel effect of the connecting pipe 6, the water level between the first-stage diesel filter 1 and the second-stage diesel filter 2 is always consistent. When the water level reaches the alarm warning line set by the water level sensor 7, a diesel filter drain reminder message will be sent to the driver, and the driver can drain the water by loosening the drain valve 5. Generally, the industry will configure drain valves 5 at the bottom of the first-stage diesel filter 1 and the second-stage diesel filter 2, so that the driver needs to perform two drain operations; while the present invention only needs to configure one drain valve 5, and only one drain operation is required to drain the water in the first and second filters at the same time. At the same time, because the water levels on the left and right sides are always the same height, there will be no problem of the water level of a filter rising too fast and the water level alarm being too early, which greatly improves the water capacity of the diesel filter and saves the driver's drain operation time. In summary, the present invention cleverly uses the principle of communicating vessels to make the product more user-friendly and close to the people.

[0031] In particular, the interface of the connecting pipe on the first heater 81 and the second heater 8 can use an articulated pipe joint, or a quick-insert joint, or a ferrule-type metal joint. The middle tube body of the connecting pipe 6 can use a nylon tube, or a polytetrafluoroethylene tube or other flexible tube. Preferably, a filter is provided at the end of the connecting pipe 6 to prevent impurities from accumulating in the connecting pipe and causing pipe blockage, and also to facilitate cleaning of the connecting pipe. The filter 6 can also be respectively provided at the oil channel openings of the first heater and the second heater. It also includes an electronic oil pump 4, and a one-way valve 3 is provided in the oil channel connecting the diesel filter seat 9 and the electronic oil pump 4, and the one-way valve 3 is installed in the diesel filter seat 9.

[0032] Those skilled in the art will appreciate that numerous variations to the above description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0033] Although what is considered as exemplary embodiments of the present invention has been described and described, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt specific situations to the teachings of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments and their equivalents that fall within the scope of the present invention.

Claims

1. An integrated diesel filter, comprising a first-stage diesel filter, a second-stage diesel filter, and a diesel filter seat, wherein the first-stage diesel filter and the second-stage diesel filter are mounted on the diesel filter seat; the diesel filter seat is provided with a first inlet and a second outlet, wherein: The first inlet is connected to the inlet of the first-stage diesel filter, the outlet of the first-stage diesel filter is connected to the inlet of the second-stage diesel filter through the channel inside the diesel filter seat; the outlet of the second-stage diesel filter is connected to the second outlet; the second outlet is connected to the combustion supply system of the engine through an oil pipe, and is characterized in that: it also includes a connecting pipe and a water level sensor, the two ends of the connecting pipe are respectively connected to the lower part of the first-stage diesel filter and the lower part of the second-stage diesel filter; the water level sensor is used to warn the water level height inside the first-stage diesel filter or the second-stage diesel filter.

2. An integrated diesel filter as claimed in claim 1, characterized in that: The middle part of the connecting pipe is bent, and both ends thereof are higher than the middle part, so that the connecting pipe is bent into a U-shaped structure.

3. An integrated diesel filter as claimed in claim 1, characterized in that: The diameter of the connecting pipe is greater than 5 mm.

4. An integrated diesel filter as claimed in claim 1, characterized in that: A drain valve and a first heater are disposed at the bottom of the first-stage diesel filter.

5. An integrated diesel filter as claimed in claim 4, characterized in that: A water level sensor and a second heater are disposed at the bottom of the second-stage diesel filter.

6. An integrated diesel filter as claimed in claim 5, characterized in that: The two ends of the connecting pipe are respectively connected to the oil passages of the first heater and the second heater, and the oil passage openings of the first heater and the second heater are designed with filter screens.

7. An integrated diesel filter as claimed in claim 1, characterized in that: It also includes an electronic oil pump. The oil passage connecting the diesel filter seat and the electronic oil pump is provided with a one-way valve, and the one-way valve is installed in the diesel filter seat.

8. An integrated diesel filter as claimed in claim 1, characterized in that: The connecting pipe is a hose.

9. An integrated diesel filter as claimed in claim 8, characterized in that: The joints at both ends of the connecting pipe are hinged pipe joints, or quick-insert joints, or ferrule-type metal joints.

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