CN201714540U

CN201714540U - Diesel filter

Info

Publication number: CN201714540U
Application number: CN2010202498574U
Authority: CN
Inventors: 程铁仕; 姜雨雷; 李旁
Original assignee: CHANGFA INDUSTRIAL GROUP Co Ltd JIANGSU PROV
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2010-07-06
Filing date: 2010-07-06
Publication date: 2011-01-19
Anticipated expiration: 2020-07-06

Abstract

The utility model discloses a diesel filter comprising an upper cover body, a lower shell and a filter element assembly, wherein a screw rod is fixed at the central axis of the lower shell; the filter element assembly is sheathed on the screw rod; the lower shell is fixedly connected with the upper cover body by the screw rod in a sealing manner; the upper cover body is connected with an oil inlet bolt and an oil outlet bolt; an oil inlet hole of the oil inlet bolt is communicated with the lower shell; the screw rod is internally provided with an oil-passing hole; one end of the oil-passing hole is communicated with an inner cavity of the filter element assembly, and the other end is communicated with an oil outlet hole of the oil outlet bolt; the filter element assembly is provided with an upper fixing frame and a lower fixing frame which are used for fixing the filter elements; the matched positions of the screw rod and the upper fixing frame and the lower fixing frame are respectively clamped with an O-shaped sealing ring in an interference manner. The diesel filter solves the problems that the original filter element has fussy installation and more filter element sealing points; the upper fixing frame and the lower fixing frame of the filter element adopt an interference sealing mode of the O-shaped sealing rings, oil leaking points are reduced, when in use, the oil path short circuit phenomenon is not easily generated, therefore, the diesel filter improves the sealing performance and filtering efficiency of the filter elements, simplifies the structure and is easy to manufacture and assemble.

Description

Diesel-oil filter

Technical field

The utility model relates to diesel engine manufacturing technology field, especially a kind of diesel-oil filter that is used for single cylinder diesel.

Background technique

Diesel-oil filter is installed in the middle of the fuel tank and Injection Pump of single cylinder diesel, is used for filtering the impurity of diesel oil, and the cleaning with the diesel oil of guaranteeing to enter diesel engine realizes the reliable of Diesel Engine Complete Machine work.The not only used amount of parts of diesel-oil filter commonly used at present is more, structure is comparatively complicated, and the sealing that compresses of rubber seal and sealing gasket is mainly leaned in the sealing of its inner filter core, make that the installation of filter core is comparatively loaded down with trivial details, the total three place's seal points up and down of filter core, be easy to generate the oil circuit short circuit phenomenon in the using process, and the structural type that compresses sealing is easy to generate oil leakage phenomenon, be difficult to guarantee that the sealability of filter core reaches requirement, cause the whole filtering efficiency of filter cleaner to descend, the more clear device of impurity in the diesel oil enters Injection Pump, finally influences the reliability of Diesel Engine Complete Machine work.

The model utility content

The technical problems to be solved in the utility model is: overcome the deficiency in the prior art, a kind of diesel-oil filter is provided, to solve the complex structure that present used diesel-oil filter exists, the problem that installation is loaded down with trivial details, the filter core sealability is relatively poor.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of diesel-oil filter, comprise upper cover body, the central axis place is fixed with the lower shell body of screw rod and is sleeved on filter core assembly on the screw rod, lower shell body is connected by screw rod and upper cover body sealing, be connected with oil-feed bolt and fuel-displaced bolt on the upper cover body, the oil inlet hole of oil-feed bolt communicates with lower shell body, offer oil-through hole in the screw rod, oil-through hole one end is communicated with the inner chamber of filter core assembly, the other end is communicated with the oil outlet of fuel-displaced bolt, described filter core assembly has the fixedly upper holder and the lower fixed frame of filter core, and screw rod and upper holder and the lower fixed frame place of matching interference respectively are installed with the O RunddichtringO.

Furtherly, described upper holder center has recessed cavity, the lower fixed frame center has the fovea superior cavity, screw rod is threaded with upper cover body after passing fovea superior cavity and recessed cavity respectively, screw rod and the recessed cavity place of matching have small end cone segments up, the interference of O RunddichtringO is arranged between the tail end of cone segments and the recessed cavity and is tightened, and screw rod and the fovea superior cavity place of matching have the thrust step, and the interference of O RunddichtringO is arranged between thrust step and the fovea superior cavity and is tightened.

Furtherly, be provided with seal ring between described upper cover body and the lower shell body, when lower shell body was connected by screw rod and upper cover body, seal ring was pressed between upper cover body and the lower shell body.

The beneficial effects of the utility model are: the utility model has overcome original filter core shortcomings loaded down with trivial details, that the filter core seal point is many has been installed, the upper and lower fixing frame of filter core adopts the interference sealing means of O RunddichtringO, reduced the leakage of oil point, improved the sealability of filter core, filtering efficiency can not be subjected to the objective influence of oil circuit short circuit yet and reduce, simplify the structure simultaneously, be easier to make and assembling.

Description of drawings

Below in conjunction with drawings and embodiments the utility model is further specified.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the partial enlarged drawing at A place among Fig. 1.

Fig. 4 is the partial enlarged drawing at B place among Fig. 1.

1. upper cover body, 11. oil-feed oil ducts, 12. fuel-displaced oil duct 2. lower shell bodys 21. outer chambers 3. screw rods 31. oil-through holes 32. cone segments 33. thrust steps 4. filter core assemblies 41. filter cores 42. upper holders 421. recessed cavity 43. lower fixed frames 431. fovea superior cavitys 44. inner chambers 5. oil-feed bolts 6. fuel-displaced bolt 71.O RunddichtringO 72.O RunddichtringO 8. seal rings among the figure

Embodiment.

In conjunction with the accompanying drawings the utility model is further described now.The schematic representation that these accompanying drawings are simplification only illustrates basic structure of the present utility model in a schematic way, so it only shows the formation relevant with the utility model.

As Fig. 1～a kind of diesel-oil filter shown in Figure 4, comprise upper cover body 1 and lower shell body 2, the central axis place of lower shell body 2 is fixed with screw rod 3, lower shell body 2 is threaded with upper cover body 1 by screw rod 3, filter core assembly 4 is positioned at lower shell body 2 and is sleeved on the screw rod 3, be connected with oil-feed bolt 5 and fuel-displaced bolt 6 on the upper cover body 1,6 one-tenth spatial vertical of oil-feed bolt 5 after the assembling and fuel-displaced bolt, the oil inlet hole of oil-feed bolt 5 communicates with lower shell body 2 by the oil-feed oil duct 11 that is opened on the upper cover body 1, offer oil-through hole 31 in the screw rod 3, oil-through hole 31 1 ends are communicated with the inner chamber 44 of filter core assembly 4, the fuel-displaced oil duct 12 of the other end through being opened on the upper cover body 1 is communicated with the oil outlet of fuel-displaced bolt 6, be provided with seal ring 8 between upper cover body 1 and the lower shell body 2, when lower shell body 2 is connected by screw rod 3 and upper cover body 1, seal ring 8 is pressed between upper cover body 1 and the lower shell body 2, thereby plays the sealing between the filter cleaner inside and the external world.

Described filter core assembly 4 has the fixedly upper holder 42 and the lower fixed frame 43 of filter core 41, screw rod 3 and upper holder 42 and lower fixed frame 43 places of matching interference respectively are installed with O RunddichtringO 71,72, specifically, described upper holder 42 centers have circular recessed cavity 421, lower fixed frame 43 centers have circular fovea superior cavity 431, screw rod 3 passes fovea superior cavity 431 respectively and recessed cavity 421 backs are threaded with upper cover body 1, screw rod 3 has small end cone segments 32 up with recessed cavity 421 places of matching, gap between the internal diameter of recessed cavity 421 and cone segments 32 tail ends is less than the external diameter of

O RunddichtringO

71,71 interference of O RunddichtringO are arranged between cone segments 32 tail ends and the recessed cavity 421 and are tightened, screw rod 3 has thrust step 33 with fovea superior cavity 431 places of matching, gap between the diameter at the internal diameter of fovea superior cavity 431 and thrust step 33 places is less than the external diameter of O RunddichtringO 72, and 72 interference of O RunddichtringO are arranged between thrust step 33 and the fovea superior cavity 431 and are tightened.

During the utility model assembling, oil-feed bolt 5 and fuel-displaced bolt 6 are tightened in respectively on the upper cover body 1 earlier, an O RunddichtringO 72 tightly is enclosed within thrust step 33 places of screw rod 3, again filter core assembly 4 is enclosed within on the screw rod 3 and also compresses downwards, be clamped on by interference between thrust step 33 and the fovea superior cavity 431 until O RunddichtringO 72, then another O RunddichtringO 71 usefulness special toolings are pressed between cone segments 32 tail ends of recessed cavity 421 that upper holder 42 centers of filter core assembly 4 are had and screw rod 3, O RunddichtringO 71 is clamped between recessed cavity 421 and cone segments 32 tail ends by interference equally, after filter core assembly 4 installs, upper cover body 1 is threaded with lower shell body 2 by screw rod 3, between the two with seal ring 8 sealings.

During use, diesel oil enters the outer chamber 21 that forms between filter core 41 outer walls and lower shell body 2 inwalls by oil-feed bolt 5 from oil-feed oil duct 11, after filtering through filter core 41, the diesel oil of outer chamber 21 enters the inner chamber 44 of filter core assembly 4, the diesel oil of filtering passes through fuel-displaced oil duct 12 again through oil-through hole 31 in the inner chamber 44, be transported to Injection Pump by fuel-displaced bolt 6, thereby finish the whole filtering process of diesel oil.The present invention has overcome original filter core 41 shortcomings loaded down with trivial details, that filter core 41 seal points are many has been installed, fixedly the upper and

lower fixing frame

42,43 of filter core 41 adopts the interference sealing means of O RunddichtringO 71,72, reduced the leakage of oil point, sealing system is tighter, thereby improved the sealability of filter core 41, filtering efficiency can not be subjected to the objective influence of oil circuit short circuit yet and reduce, and simplifies the structure simultaneously, is easier to make and assembling.

Above-mentioned mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage that is familiar with this technology can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the present utility model.

Claims

1. diesel-oil filter, comprise upper cover body (1), the central axis place is fixed with the lower shell body (2) of screw rod (3) and is sleeved on filter core assembly (4) on the screw rod (3), lower shell body (2) is connected by screw rod (3) and upper cover body (1) sealing, be connected with oil-feed bolt (5) and fuel-displaced bolt (6) on the upper cover body (1), the oil inlet hole of oil-feed bolt (5) communicates with lower shell body (2), offer oil-through hole (31) in the screw rod (3), oil-through hole (31) one ends are communicated with the inner chamber (44) of filter core assembly (4), the other end is communicated with the oil outlet of fuel-displaced bolt (6), it is characterized in that: filter core assembly (4) has the fixedly upper holder (42) and the lower fixed frame (43) of filter core (41), and screw rod (3) and upper holder (42) and lower fixed frame (43) place of matching interference respectively are installed with O RunddichtringO (71,72).

2. diesel-oil filter according to claim 1, it is characterized in that: described upper holder (42) center has recessed cavity (421), lower fixed frame (43) center has fovea superior cavity (431), screw rod (3) passes fovea superior cavity (431) respectively and recessed cavity (421) back is threaded with upper cover body (1), screw rod (3) has small end cone segments (32) up with recessed cavity (421) place of matching, O RunddichtringO (71) interference is arranged between the tail end of cone segments (32) and the recessed cavity (421) and is tightened, screw rod (3) has thrust step (33) with fovea superior cavity (431) place of matching, and O RunddichtringO (72) interference is arranged between thrust step (33) and the fovea superior cavity (431) and is tightened.

3. diesel-oil filter according to claim 1, it is characterized in that: be provided with seal ring (8) between described upper cover body (1) and the lower shell body (2), by screw rod (3) and upper cover body (1) when being connected, seal ring (8) is pressed between upper cover body (1) and the lower shell body (2) at lower shell body (2).