Fuel oil high-pressure pump device of excavator

Abstract

The utility model relates to the technical field of engineering machinery, in particular to an excavator fuel oil high-pressure pump device which comprises a high-pressure pump oil inlet pipe, an oil conveying pipe and a filtering device, the oil conveying pipe is arranged on one side of the high-pressure pump oil inlet pipe, and the filtering device is arranged at one end of the high-pressure pump oil inlet pipe and comprises a shell and a filtering bottle. The surfaces of the two sides of the shell are fixedly connected with the surface of a high-pressure pump oil inlet pipe and the surface of an oil conveying pipe respectively, the filtering bottle is located in the inner wall of the shell, the inner wall of the filtering bottle is fixedly connected with a filtering net, and the two ends of the filtering bottle are both connected with threaded sleeves in a sliding mode. According to the fuel oil high-pressure pump, the conditions that when an existing fuel oil high-pressure pump is used, filtering is not convenient, some impurities are carried when fuel oil enters the oil inlet pipe, meanwhile, the impurities in the oil pipe are scoured into the fuel oil high-pressure pump through the fuel oil, a pump body is damaged and blocked, and the service life is affected are effectively reduced, and the overall practicability of equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a high-pressure fuel pump device for an excavator. Background Art

[0002] The function of the fuel high-pressure pump is to suck the fuel from the fuel tank, pressurize it and transport it to the fuel supply pipe, and cooperate with the fuel pressure regulator to establish a certain fuel pressure.

[0003] In daily work, the inventor found that the high-pressure fuel pump used in existing excavators is not easy to filter during use. The oil inlet pipe will carry some impurities when the fuel enters the fuel. At the same time, the fuel will also flush the impurities in the oil pipe into the fuel high-pressure pump, causing damage and blockage to the pump body, affecting its life. This in turn leads to the problem that the high-pressure fuel pump of the existing excavator will carry impurities when taking in oil. Utility Model Content

[0004] The utility model aims to solve the defect that the high-pressure fuel pump in the prior art carries impurities when the fuel is fed in, and proposes a high-pressure fuel pump device for an excavator.

[0005] 8. The filtration system of claim 1, wherein the filter element is located between the filter element and the filter element and the filter element is configured to filter the filter element to a desired effect.

[0006] Preferably, the threaded connector is hollow and is connected to the filter bottle, the oil pipeline, and the oil inlet pipe of the high-pressure pump.

[0007] Preferably, a gasket is fixedly connected to one end of the threaded sleeve, and there are two gaskets. Through the above components, after the threaded sleeve is connected to the threaded connector, the threaded sleeve will drive the gasket to be squeezed onto the threaded connector to improve the sealing effect.

[0008] Preferably, four stabilizing blocks are fixedly connected to the surface of the filter bottle, and four grooves are opened on the inner wall of the shell. The stabilizing blocks are plugged into the inner walls of the grooves. Through the above components, when placing the filter bottle, the stabilizing blocks are inserted into the grooves on the surface of the shell, which can play a role in positioning the filter bottle.

[0009] Preferably, the inner wall of the shell is provided with an auxiliary component, the auxiliary component includes a baffle plate, there are two baffle plates, the inner wall of the shell is provided with a sliding groove, the baffle plate is slidably connected to the inner wall of the sliding groove, through the above components, when the filter bottle is removed for cleaning, the baffle plate will slide down to cover the threaded connector, thereby reducing the possibility of stains entering the pipe during the cleaning process, causing impurities to enter the fuel high-pressure pump.

[0010] Preferably, two stabilizing bars are fixedly connected to the inner wall of the sliding groove on the surface of the shell, and the stabilizing bars are slidably connected to the inner wall of the shielding plate. Through the above components, the stabilizing bars can limit the moving direction of the shielding plate and improve the overall stabilizing effect.

[0011] Preferably, a spring is sleeved on the surface of the stabilizing rod, and the two ends of the spring are respectively fixedly connected to the baffle plate and the inner wall of the sliding groove on the surface of the shell. Through the above components, the spring pushes the baffle plate to reset when the filter bottle is removed.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, a filtering device is provided, the filter bottle is placed in the shell, the interface of the stabilizing block is inserted into the groove on the surface of the shell, and then the threaded sleeve is rotated to connect the threaded sleeve with the threaded connector. After the threaded sleeve is connected with the threaded connector, the threaded sleeve will drive the gasket to be squeezed on the threaded connector. After the filter bottle is installed, the filter bottle and the filter net can be filtered during the oil intake process. When cleaning, only the filter bottle needs to be removed. By providing a filtering device, it is convenient to filter the equipment, which can effectively reduce the inconvenience of filtering of the existing fuel high-pressure pump during use. The oil inlet pipe will carry some impurities when entering the fuel, and the fuel will also wash the impurities in the oil pipe into the fuel high-pressure pump, causing the pump body to be damaged and blocked, affecting the service life, thereby improving the overall practicality of the equipment.

[0014] 2. In the utility model, by providing an auxiliary device, when the filter bottle is removed for cleaning, the filter bottle loses the restriction on the baffle plate, and the spring drives the baffle plate to reset, thereby shielding the threaded connector, thereby reducing the risk of dust and impurities entering the oil inlet pipe of the high-pressure pump from the threaded connector when cleaning the filter bottle, thereby maintaining the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1The utility model provides a three-dimensional structural schematic diagram of a high-pressure fuel pump device for an excavator;

[0016] Figure 2 The utility model provides a schematic diagram of the storage mechanism structure of an excavator fuel high-pressure pump device;

[0017] Figure 3 The utility model proposes a fuel high-pressure pump device for an excavator Figure 2 Schematic diagram of the structure at A in the middle;

[0018] Figure 4 Another cross-sectional structural schematic diagram of a high-pressure fuel pump device for an excavator is provided in the utility model;

[0019] Figure 5 The utility model provides a bottom view structural diagram of a high-pressure fuel pump device for an excavator;

[0020] Figure 6 The utility model provides a partial structural schematic diagram of a filtering device of a high-pressure fuel pump device for an excavator.

[0021] Legend:

[0022] 1. Oil inlet pipe of high-pressure pump; 2. Oil delivery pipe; 3. Filter device; 31. Shell; 32. Filter screen; 33. Filter bottle; 34. Threaded connector; 35. Threaded sleeve; 36. Gasket; 37. Stabilizer block; 4. Auxiliary components; 41. Baffle plate; 42. Stabilizer bar; 43. Spring. DETAILED DESCRIPTION

[0023] See also Figure 1-6 The utility model provides a technical solution: a high-pressure fuel pump device for an excavator, comprising a high-pressure pump oil inlet pipe 1, an oil delivery pipe 2 and a filter device 3, wherein the oil delivery pipe 2 is arranged on one side of the high-pressure pump oil inlet pipe 1, and the filter device 3 is arranged on one end of the high-pressure pump oil inlet pipe 1.

[0024] The specific configuration and function of the filter device 3 and the auxiliary component 4 will be described in detail below.

[0025] Specifically, the filtering device 3 includes a shell 31 and a filter bottle 33. The two side surfaces of the shell 31 are fixedly connected to the surfaces of the high-pressure pump oil inlet pipe 1 and the oil delivery pipe 2 respectively. The filter bottle 33 is arranged in the inner wall of the shell 31. The inner wall of the filter bottle 33 is fixedly connected with a filter net 32. Both ends of the filter bottle 33 are slidably connected with a threaded sleeve 35. The inner wall of the shell 31 is fixedly connected with two threaded connectors 34, and the threaded sleeve 35 is threadedly connected to the threaded connector 34.

[0026] In this embodiment: the filter bottle 33 can be installed in the shell 31 through the threaded sleeve 35 and the threaded connector 34. The filter bottle 33 is arranged between the oil pipeline 2 and the high-pressure pump oil inlet pipe 1. During the oil intake process, the filter bottle 33 can cooperate with the filter net 32 ​​for filtering.

[0027] Specifically, the threaded connector 34 is hollow and is connected to the filter bottle 33 , the oil delivery pipe 2 , and the oil inlet pipe 1 of the high-pressure pump.

[0028] Specifically, a gasket 36 is fixedly connected to one end of the threaded sleeve 35 , and there are two gaskets 36 .

[0029] In this embodiment, after the threaded sleeve 35 is connected to the threaded connector 34 , the threaded sleeve 35 drives the gasket 36 to be pressed onto the threaded connector 34 , thereby improving the sealing effect.

[0030] Specifically, four stabilizing blocks 37 are fixedly connected to the surface of the filter bottle 33, and four grooves are opened on the inner wall of the shell 31. The stabilizing blocks 37 are plugged into the inner walls of the grooves. When placing the filter bottle 33, the stabilizing blocks 37 are inserted into the grooves on the surface of the shell 31, which can play a role in positioning the filter bottle 33.

[0031] Specifically, the inner wall of the shell 31 is provided with an auxiliary component 4, the auxiliary component 4 includes a shielding plate 41, there are two shielding plates 41, the inner wall of the shell 31 is provided with a sliding groove, and the shielding plate 41 is slidably connected to the inner wall of the sliding groove.

[0032] In this embodiment, when the filter bottle 33 is removed for cleaning, the shielding plate 41 will slide down to shield the threaded connector 34, thereby reducing the possibility of dirt entering the pipe during the cleaning process, thereby reducing the possibility of impurities entering the fuel high-pressure pump.

[0033] Specifically, two stabilizing rods 42 are fixedly connected to the inner wall of the sliding groove on the surface of the shell 31. The stabilizing rods 42 are slidably connected to the inner wall of the shielding plate 41. The stabilizing rods 42 can limit the moving direction of the shielding plate 41 and improve the overall stabilizing effect.

[0034] Specifically, a spring 43 is sleeved on the surface of the stabilizing rod 42 , and two ends of the spring 43 are fixedly connected to the shielding plate 41 and the inner wall of the sliding groove on the surface of the shell 31 , respectively.

[0035] In this embodiment, when the filter bottle 33 is removed, the spring 43 pushes the shielding plate 41 to reset.

[0036] Working principle: by setting the filter device 3, the filter bottle 33 is placed in the shell body 31, and the interface of the stabilizing block 37 is inserted into the groove on the surface of the shell body 31, and then the threaded sleeve 35 is rotated, and the threaded sleeve 35 is connected with the threaded connector 34. After the threaded sleeve 35 is connected with the threaded connector 34, the threaded sleeve 35 will drive the gasket 36 to be squeezed on the threaded connector 34. After the filter bottle 33 is installed, the filter bottle 33 and the filter net 32 ​​can be filtered during the oil intake process. When cleaning, only the filter bottle 33 needs to be removed. By setting the filter device 3, it is convenient to filter the equipment, which can effectively reduce the inconvenience of filtering of the existing fuel high-pressure pump during use. The oil inlet pipe will carry some impurities when entering the fuel, and the fuel will also wash the impurities in the oil pipe into the fuel high-pressure pump, causing the pump body to be damaged and blocked, affecting the service life, thereby improving the overall practicality of the equipment.

[0037] By setting up the auxiliary device, when the filter bottle 33 is removed for cleaning, the filter bottle 33 loses the restriction on the baffle plate 41, and the spring 43 drives the baffle plate 41 to reset, thereby shielding the threaded connector 34, thereby reducing the risk of dust and impurities entering the high-pressure pump oil inlet pipe 1 from the threaded connector 34 when cleaning the filter bottle 33, thereby maintaining the equipment.

Claims

1. A high-pressure fuel pump device for an excavator, comprising a high-pressure pump oil inlet pipe (1), an oil delivery pipe (2) and a filter device (3), characterized in that: The oil delivery pipe (2) is arranged on one side of the oil inlet pipe (1) of the high-pressure pump, and the filter device (3) is arranged on one end of the oil inlet pipe (1) of the high-pressure pump. The filter device (3) comprises a shell (31) and a filter bottle (33). The two side surfaces of the shell (31) are fixedly connected to the surfaces of the oil inlet pipe (1) of the high-pressure pump and the oil delivery pipe (2) respectively. The filter bottle (33) is arranged in the inner wall of the shell (31). The inner wall of the filter bottle (33) is fixedly connected with a filter net (32). Both ends of the filter bottle (33) are slidably connected with threaded sleeves (35). The inner wall of the shell (31) is fixedly connected with two threaded connectors (34), and the threaded sleeves (35) are threadedly connected to the threaded connector (34).

2. The excavator fuel high-pressure pump device according to claim 1, characterized in that: The threaded connector (34) is hollow and is connected to the filter bottle (33), the oil delivery pipe (2), and the high-pressure pump oil inlet pipe (1).

3. The excavator fuel high-pressure pump device according to claim 1, characterized in that: One end of the threaded sleeve (35) is fixedly connected with a gasket (36), and there are two gaskets (36).

4. The excavator fuel high-pressure pump device according to claim 1, characterized in that: Four stabilizing blocks (37) are fixedly connected to the surface of the filter bottle (33), and the inner wall of the housing (31) is provided with four grooves, and the stabilizing blocks (37) are plugged into the inner walls of the grooves.

5. The excavator fuel high-pressure pump device according to claim 1, characterized in that: The inner wall of the shell (31) is provided with an auxiliary component (4), the auxiliary component (4) comprises a shielding plate (41), there are two shielding plates (41), the inner wall of the shell (31) is provided with a sliding groove, and the shielding plate (41) is slidably connected to the inner wall of the sliding groove.

6. The excavator fuel high-pressure pump device according to claim 1, characterized in that: Two stabilizing rods (42) are fixedly connected to the inner wall of the sliding groove on the surface of the shell (31), and the stabilizing rods (42) are slidably connected to the inner wall of the shielding plate (41).

7. The excavator fuel high-pressure pump device according to claim 6, characterized in that: A spring (43) is sleeved on the surface of the stabilizing rod (42), and two ends of the spring (43) are respectively fixedly connected to the shielding plate (41) and the inner wall of the sliding groove on the surface of the shell (31).

Images