CN216767610U - Fuel filter with hand pump - Google Patents

Abstract

The utility model relates to a field of filter specifically discloses a take fuel filter of hand pump, it includes the filter jar body and sets up the filter seat on the filter jar body, set up the pump oil pocket in the filter seat, and be provided with the hand pump in the pump oil pocket, the hand pump includes the push rod and the pump body, set up the interface with pump oil pocket intercommunication on the filter seat, threaded groove has been seted up on the inner wall of interface, the push rod is kept away from and is provided with the screw thread with threaded groove screw-thread fit on the perisporium of the pump body, the screw thread is spacing with the locking of the pump body with the threaded groove cooperation. The hand pump in the application can be locked and limited when the engine normally operates, so that the hand pump is difficult to freely shake due to vibration generated by the engine, and the influence on the oil inlet amount of the engine when the hand pump freely shakes is reduced.

Description

Fuel filter with hand pump

Technical Field

The application relates to the field of filters, in particular to a fuel filter with a hand pump.

Background

The fuel filter is used as an important component of an engine fuel system, and mainly has the functions of intercepting and filtering pollutants such as moisture, impurity particles and the like in fuel, providing clean fuel for a combustion system of an engine, preventing a fuel spray nozzle from being rusted and blocked, avoiding carbon deposition generated in a combustion chamber of the engine and further ensuring normal operation of the fuel system.

Chinese utility model patent document with publication number CN207261139U discloses an oil filter is fired to plunger type hand pump, including firing the oil filter jar body, be equipped with on the oil filter jar body and strain the seat, strain and be equipped with the plunger pump on the seat, the plunger pump includes the piston cap, the push rod, the pump oil chamber, piston and compression spring, the piston cap is used for sealing the pump oil chamber, the piston cooperates with the pump oil chamber, the one end and the piston connection of push rod, the other end extends the piston cap, compression spring's one end and piston connection, the other end is connected with the bottom of pump oil chamber, the plunger pump is equipped with first consent and the second consent that communicates bottom the pump oil chamber, first consent is linked together with firing the oil filter jar body, be equipped with the oil-out on the filter seat, the second consent is connected with the oil-out, install first umbrella type valves on the first consent, install second umbrella type valves on the second consent.

To above-mentioned correlation technique, when the engine was in normal operating condition, received the vibration effect of engine, compression spring can make a round trip to stretch out and draw back to drive the piston and make a round trip to rock in the pump oil intracavity, the air of piston compression pump oil intracavity for first umbrella-type valves and second umbrella-type valves open and shut repeatedly, thereby influenced the normal pumping of fuel, made the operation of engine receive the influence.

SUMMERY OF THE UTILITY MODEL

In order to reduce the influence that the engine received the fuel pump in the operation, this application provides a fuel filter with hand pump.

The application provides a take fuel filter of hand pump adopts following technical scheme:

a fuel filter with a hand pump comprises a filter tank body and a filter base arranged on the filter tank body, wherein a pump oil cavity is arranged in the filter base, a hand pump is arranged in the pump oil cavity and comprises a push rod and a pump body, the bottom of the pump oil cavity is respectively provided with an oil inlet and an oil outlet, a first one-way valve is arranged on the oil inlet, a second one-way valve is arranged on the oil outlet, an oil inlet pipe and an oil outlet pipe are arranged on the filter base, the oil inlet pipe is communicated with the oil inlet end of the filter tank body, the oil outlet end of the filter tank body is communicated with the oil inlet, the oil outlet pipe is communicated with the oil outlet, the filter base is provided with a socket communicated with the pump oil cavity, the inner wall of the inserting port is provided with a thread groove, the peripheral wall of the push rod, which is far away from the pump body, is provided with threads matched with the thread groove in a threaded manner, and the threads are matched with the thread groove to lock and limit the pump body.

By adopting the technical scheme, when air in the filter tank body needs to be discharged, the push rod is screwed to be screwed out from the thread groove, then the push rod is pulled outwards from the filter base, the pump body acts in the pump oil cavity, so that the air pressure in the cavity at the oil inlet and the oil outlet is changed, engine oil passes through the oil inlet pipe and then is filtered by the filter tank body, then enters the pump oil cavity through the first one-way valve, then is pressed towards the direction close to the filter base, enters the oil outlet pipe through the second one-way valve, is pumped to a required position through the oil outlet pipe, when the air in the filter tank body is discharged by the hand pump, the push rod is pressed again, the push rod is screwed, so that the thread on the push rod is locked in the thread groove, the hand pump is locked and limited, the free shaking of the hand pump when an engine runs is limited, and the first one-way valve and the second one-way valve are difficult to be influenced by the hand pump to be opened and closed freely, thereby affecting the normal operation of the engine.

Optionally, the pump body includes a piston and a compression spring, one end of the push rod is fixedly connected with the piston, the other end of the push rod extends out of the filter base, the piston is slidably arranged in the pump oil cavity, the piston is in sealing fit with the inner wall of the pump oil cavity, and the compression spring is located between the bottom of the pump oil cavity and the piston.

By adopting the technical scheme, when air in the filter tank body needs to be discharged, the push rod is firstly screwed out from the thread groove, then the push rod is pumped outwards, the push rod drives the piston to pump air, the air pressure in the pump oil cavity at the opening is reduced, the first one-way valve is opened, the air in the filter tank body is pumped, engine oil enters the filter tank body from the oil inlet, then the push rod is pressed, the pressure in the pump oil cavity at the oil inlet and the oil outlet is increased, the first one-way valve is closed, the second one-way valve is opened, the air enters the oil outlet pipe through the oil outlet, the push rod is repeatedly pumped and pressed, the filter tank body can be filled with the engine oil, and the effect of exhausting the air in the filter tank body is achieved.

Optionally, a sliding seal ring is fixedly sleeved on the peripheral wall of the piston, and the sliding seal ring is in sliding sealing fit with the inner wall of the pump oil cavity.

Through adopting above-mentioned technical scheme, the leakproofness of piston and pump oil intracavity wall can be strengthened to the slip sealing washer for the pressure in the change pump oil intracavity that the piston can be stable when removing, thereby make the air of the internal of filter jar can be more smooth pump out outside the filter jar body.

Optionally, an oil inlet channel, an oil guide channel and an oil outlet channel are formed in the filter base, the oil inlet channel communicates the oil inlet pipe with the oil inlet end of the filter tank, the oil guide channel communicates the oil outlet end of the filter tank with the oil inlet, and the oil outlet channel communicates the oil outlet with the oil outlet pipe;

the first check valve comprises a first mounting seat, a first connecting rod, a first oil plug and a first torsion spring, the first mounting seat is fixed on the bottom wall of the oil pumping cavity, two ends of the first connecting rod are respectively hinged with the first oil plug and the first mounting seat, the first oil plug covers the oil inlet, and the first torsion spring is mounted on the first mounting seat and used for elastically covering the first oil plug on the oil inlet;

the second check valve comprises a second mounting seat, a second connecting rod, a second oil plug and a second torsion spring, the second mounting seat is fixed to the inner wall of the oil outlet channel, two ends of the second connecting rod are hinged to the second oil plug and the second mounting seat respectively, the second oil plug covers the oil outlet channel and is located in the oil outlet channel, and the second torsion spring is mounted on the second mounting seat and used for covering the second oil plug on the oil inlet.

By adopting the technical scheme, when air in the filter tank body needs to be discharged, the push rod is pulled, the push rod drives the piston to move in the pump oil cavity, so that the pressure of the pump oil cavity close to the oil inlet and the oil outlet is reduced, the first oil plug is separated from the oil inlet under the action of the pressure, the first oil plug drives the first connecting rod to rotate around the first mounting seat, engine oil enters the filter tank body from the oil inlet pipe through the oil inlet channel, enters the pump oil cavity through the oil guide channel after being filtered by the filter tank body, then the push rod is pressed, so that the pressure of the pump oil cavity close to the oil inlet and the oil outlet is increased, the first oil plug elastically supports against the oil inlet again, meanwhile, the second oil plug is separated from the oil outlet under the action of the pressure, the second oil plug pushes the second connecting rod to rotate around the second mounting seat, and the air pumped into the pump oil cavity is discharged into the oil outlet pipe through the oil outlet and the oil outlet channel, the air in the filter tank can be exhausted by repeatedly pumping and pressing the push rod.

Optionally, a limiting plate for limiting the position of the piston is arranged on the inner wall of the oil pumping cavity, and the limiting plate is located on one side, close to the compression spring, of the piston.

Through adopting above-mentioned technical scheme, the limiting plate can carry on spacingly to the position of piston for in compression spring's elastic deformation within range, damage to compression spring when having reduced the piston twitch when the piston supports to press compression spring.

Optionally, one end of the compression spring is fixed on the bottom wall of the oil cavity of the pump, and the other end of the compression spring is fixedly provided with a supporting block which elastically presses against the piston.

By adopting the technical scheme, when the push rod is screwed, sliding friction is generated between the compression spring and the piston, and the supporting block can reduce the damage of the end part of the compression spring to the piston, so that the piston has longer service life.

Optionally, the oil inlet pipe and the oil outlet pipe are both provided with two, the oil inlet pipe is communicated with each other, two, the oil outlet pipe is communicated with each other, and two, the oil inlet direction of the oil inlet pipe is different, and the oil outlet direction of the oil outlet pipe is different.

Through adopting above-mentioned technical scheme, two sets of oil pipes that advance have increased into oil quantity, and two sets of orientation difference play oil pipe then can carry out the lubricated of oil outlet simultaneously to the different positions of vehicle, has improved lubricated efficiency.

Optionally, the filtering seat is provided with an exhaust valve, and the exhaust valve penetrates through the filtering seat and is communicated with the oil outlet pipe.

Through adopting above-mentioned technical scheme, when the air of the internal portion of filter jar was taken out oil channel and oil pipe, opened discharge valve, with the air escape in the oil pipe to guaranteed the stability of oil pipe internal pressure, reduced the probability that the accident took place.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when air in the filter tank needs to be discharged, the push rod is screwed to be screwed out of the thread groove, then the push rod is pulled out of the filter base, the pump body acts in the oil pumping cavity to change the air pressure in the cavity at the oil inlet and the oil outlet, so that engine oil passes through the oil inlet pipe, is filtered by the filter tank, then enters the oil pumping cavity through the first one-way valve, and is pressed towards the direction close to the filter base, the engine oil enters the oil outlet pipe through the second one-way valve, and is pumped to a required position through the oil outlet pipe, when the hand pump discharges the air in the filter tank, the push rod is pressed again at the moment, the push rod is screwed, threads on the push rod are locked in the thread groove, so that the hand pump is locked and limited, the free shaking of the hand pump during the running of an engine is limited, and the first one-way valve and the second one-way valve are difficult to be freely opened and closed under the influence of the hand pump, thereby affecting the normal operation of the engine;

2. the sliding seal ring can enhance the sealing performance between the piston and the inner wall of the pump oil cavity, so that the pressure intensity in the pump oil cavity can be stably changed when the piston moves, and the air in the filter tank body can be smoothly pumped out of the filter tank body;

3. the sliding seal ring can enhance the sealing performance of the piston and the inner wall of the pump oil cavity, so that the pressure intensity in the pump oil cavity can be stably changed when the piston moves, and air in the filter tank can be smoothly pumped out of the filter tank.

Drawings

FIG. 1 is a schematic overall structure diagram of a fuel filter with a hand pump in the embodiment of the application.

Fig. 2 is a cross-sectional view of the fuel filter with the hand pump of fig. 1.

Fig. 3 is an enlarged view at a in fig. 2.

Reference numerals: 1. a filter tank; 11. a filter tank; 12. a partition plate; 121. an oil inlet hole; 13. an oil filter pipe; 131. an oil leak hole; 14. filtering paper; 15. a bypass valve; 2. a filter base; 21. a pump oil chamber; 211. an oil inlet; 212. an oil outlet; 213. a limiting plate; 22. an oil inlet pipe; 23. an oil outlet pipe; 24. an oil inlet channel; 25. an oil guide passage; 26. an oil outlet channel; 27. an interface; 271. a thread groove; 28. an exhaust valve; 3. a hand pump; 31. a push rod; 311. a thread; 32. a pump body; 321. a piston; 322. a compression spring; 4. sliding the seal ring; 5. a first check valve; 51. a first mounting seat; 52. a first connecting rod; 53. a first oil plug; 54. a first torsion spring; 6. a second one-way valve; 61. a second mounting seat; 62. a second connecting rod; 63. a second oil plug; 64. a second torsion spring; 7. and (7) a supporting block.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a fuel filter with a hand pump.

Referring to fig. 1 and 2, a fuel filter with a hand pump comprises a filter tank body 1, a filter base 2 and a hand pump 3, wherein the filter base 2 is adhered to the filter tank body 1, a pump oil cavity 21 is formed in the filter base 2, the hand pump 3 comprises a push rod 31 and a pump body 32, the bottom of the pump oil cavity 21 is respectively provided with an oil inlet 211 and an oil outlet 212, the oil inlet 211 is provided with a first one-way valve 5, the oil outlet 212 is provided with a second one-way valve 6, the filter base 2 is provided with an oil inlet pipe 22 and an oil outlet pipe 23, the oil inlet pipe 22 and the oil outlet pipe 23 are both provided with two, the two oil inlet pipes 22 are communicated with each other, the two oil outlet pipes 23 are communicated with each other, the oil inlet directions of the two oil inlet pipes 22 are different, and the oil outlet directions of the two oil outlet pipes 23 are different; the upper thread 311 of the filtering seat 2 is provided with an exhaust valve 28, and the end part of the exhaust valve 28 penetrates through the filtering seat 2 and is communicated with the oil outlet pipe 23; an oil inlet channel 24, an oil guide channel 25 and an oil outlet channel 26 are formed in the filter base 2, the oil inlet channel 24 communicates an oil inlet pipe 22 with an oil inlet end of the filter tank body 1, the oil guide channel 25 communicates an oil outlet end of the filter tank body 1 with an oil inlet 211, the oil outlet channel 26 communicates an oil outlet 212 with an oil outlet pipe 23, an insertion opening 27 communicated with the pump oil chamber 21 is formed in the filter base 2, a thread groove 271 is formed in the inner wall of the insertion opening 27, a thread 311 in threaded fit with the thread groove 271 is formed in the peripheral wall, away from the pump body 32, of the push rod 31, and the screw 311 is matched with the thread groove 271 to lock and limit the pump body 32.

Referring to fig. 2 and 3, the filter tank 1 includes a filter tank 11, a partition plate 12, an oil filter pipe 13, filter paper 14, and a bypass valve 15, wherein one end of the filter tank 11 is open, the partition plate 12 is welded and fixed at the opening of the filter tank 11, and a plurality of oil inlet holes 121 are arranged on the partition plate 12, the oil inlet channel 24 is communicated with the oil inlet holes 121, the oil filter pipe 13 is perpendicular to the partition plate 12 and is welded on the partition plate 12, one end of the oil filter pipe 13 penetrates through the partition plate 12 and extends out of the partition plate 12 and is communicated with the oil guide channel 25, a plurality of layers of filter paper 14 are arranged and respectively coated outside the oil filter pipe 13, oil leakage holes 131 are also arranged on the oil filtering pipe 13 at intervals, the bypass valve 15 is arranged at the bottom of the filtering tank 11, when the filtration of the filter paper 14 is blocked, the engine oil accumulates in the filter tank 11, and when a certain degree is reached, the engine oil presses the bypass valve 15, so that the bypass valve 15 opens and the engine oil enters the oil filter pipe 13 from the end of the oil filter pipe 13.

Referring to fig. 2 and 3, the pump body 32 includes a piston 321 and a compression spring 322, one end of the push rod 31 is adhered to the piston 321, the other end of the push rod extends out of the filter base 2, the piston 321 is slidably disposed in the pump oil chamber 21, a sliding seal ring 4 is fixedly sleeved outside the piston 321, the sliding seal ring 4 is slidably and sealingly attached to the inner wall of the pump oil chamber 21, the compression spring 322 is located between the bottom of the pump oil chamber 21 and the piston 321, one end of the compression spring 322 is welded and fixed to the bottom of the pump oil chamber 21, a support block 7 is welded and fixed to the other end of the compression spring 322, under the elastic action of the compression spring 322, the support block 7 elastically presses against the piston 321, a limit plate 213 is further disposed on the inner wall of the pump oil chamber 21, two limit plates 213 are disposed, the two limit plates 213 are symmetrically welded on the inner wall of the pump oil chamber 21, and the limit plate 213 is located on one side of the piston 321 close to the compression spring 322.

Referring to fig. 2 and 3, the first check valve 5 includes a first mounting seat 51, a first connecting rod 52, a first oil plug 53 and a first torsion spring 54, the first mounting seat 51 is welded and fixed on the bottom wall of the pump oil chamber 21, two ends of the first connecting rod 52 are respectively hinged with the first oil plug 53 and the first mounting seat 51, the first oil plug 53 covers the oil inlet 211, and the first torsion spring 54 is mounted on the first mounting seat 51 and is used for elastically covering the first oil plug 53 on the oil inlet 211; the second check valve 6 comprises a second mounting seat 61, a second connecting rod 62, a second oil plug 63 and a second torsion spring 64, the second mounting seat 61 is fixed on the inner wall of the oil outlet passage 26, two ends of the second connecting rod 62 are respectively hinged to the second oil plug 63 and the second mounting seat 61, the second oil plug 63 covers the oil outlet 212 and is located in the oil outlet passage 26, and the second torsion spring 64 is mounted on the second mounting seat 61 and is used for elastically covering the second oil plug 63 on the oil inlet 211.

The implementation principle of the fuel filter with the hand pump in the embodiment of the application is as follows: when air in the filter tank body 1 needs to be discharged, the push rod 31 is screwed, the push rod 31 is popped out under the action of the compression spring 322, at this time, manual oil pumping can be performed, the push rod 31 is firstly pulled outwards, the push rod 31 drives the piston 321 to pump air, so that the air pressure of the pump oil chamber 21 at the opening is reduced, the first one-way valve 5 is opened, air in the filter tank 11 is pumped, oil enters the filter tank 11 from the oil inlet 211 through the oil inlet channel 24, then enters the oil filter pipe 13 after sequentially passing through the oil inlet 121, the filter paper 14 and the oil leakage hole 131, enters the pump oil chamber 21 from the oil inlet 211 after passing through the oil guide channel 25, then the push rod 31 is pressed, the pressure in the pump oil chamber 21 at the oil inlet 211 and the oil outlet 212 is increased, the first one-way valve 5 is closed, the second one-way valve 6 is opened, so that air enters the oil outlet 23 from the oil outlet 212 through the oil outlet channel 26, the push rod 31 is repeatedly pumped and pressed, the air in the filter tank 1 can be emptied, and the exhaust valve 28 is screwed out in the exhaust process, so that the pressure in the oil pipe is kept stable.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A fuel filter with a hand pump comprises a filter tank body (1) and a filter base (2) arranged on the filter tank body (1), wherein a pump oil cavity (21) is formed in the filter base (2), the pump oil cavity (21) is internally provided with the hand pump (3), the hand pump (3) comprises a push rod (31) and a pump body (32), the bottom of the pump oil cavity (21) is respectively provided with an oil inlet (211) and an oil outlet (212), the oil inlet (211) is provided with a first one-way valve (5), the oil outlet (212) is provided with a second one-way valve (6), the filter base (2) is provided with an oil inlet pipe (22) and an oil outlet pipe (23), the oil inlet pipe (22) is communicated with the oil inlet end of the filter tank body (1), the oil inlet end of the filter tank body (1) is communicated with the oil inlet (211), and the oil outlet pipe (23) is communicated with the oil outlet (212), the method is characterized in that: the oil pump is characterized in that the filter base (2) is provided with a plug-in port (27) communicated with the oil chamber (21) of the pump, the inner wall of the plug-in port (27) is provided with a thread groove (271), the peripheral wall of the push rod (31) far away from the pump body (32) is provided with a thread (311) in thread fit with the thread groove (271), and the thread (311) is matched with the thread groove (271) to lock and limit the pump body (32).

2. The fuel filter with the hand pump of claim 1, wherein: the pump body (32) includes piston (321) and compression spring (322), the one end and piston (321) fixed connection of push rod (31), the other end extend and strain outside seat (2), piston (321) slide and set up in pump oil chamber (21), just piston (321) and the sealed laminating of inner wall in pump oil chamber (21), compression spring (322) are located between pump oil chamber (21) bottom and piston (321).

3. The fuel filter with the hand pump of claim 2, wherein: the fixed cover is equipped with slip sealing washer (4) on the perisporium of piston (321), slip sealing washer (4) and the inner wall sliding seal laminating of pump oil pocket (21).

4. The fuel filter with the hand pump of claim 1, wherein: an oil inlet channel (24), an oil guide channel (25) and an oil outlet channel (26) are formed in the filter base (2), the oil inlet channel (24) is used for communicating the oil inlet pipe (22) with the oil inlet end of the filter tank body (1), the oil guide channel (25) is used for communicating the oil outlet end of the filter tank body (1) with the oil inlet (211), and the oil outlet channel (26) is used for communicating the oil outlet (212) with the oil outlet pipe (23);

the first check valve (5) comprises a first mounting seat (51), a first connecting rod (52), a first oil plug (53) and a first torsion spring (54), the first mounting seat (51) is fixed on the bottom wall of the pump oil cavity (21), two ends of the first connecting rod (52) are respectively hinged with the first oil plug (53) and the first mounting seat (51), the first oil plug (53) covers the oil inlet (211), and the first torsion spring (54) is mounted on the first mounting seat (51) and used for elastically covering the first oil plug (53) on the oil inlet (211);

the second one-way valve (6) comprises a second mounting seat (61), a second connecting rod (62), a second oil plug (63) and a second torsion spring (64), the second mounting seat (61) is fixed to the inner wall of the oil outlet channel (26), two ends of the second connecting rod (62) are hinged to the second oil plug (63) and the second mounting seat (61) respectively, the second oil plug (63) covers the oil outlet (212) and is located in the oil outlet channel (26), and the second torsion spring (64) is installed on the second mounting seat (61) and is used for elastically covering the second oil plug (63) on the oil inlet (211).

5. The fuel filter with the hand pump of claim 2, wherein: and a limiting plate (213) used for limiting the position of the piston (321) is arranged on the inner wall of the pump oil cavity (21), and the limiting plate (213) is positioned on one side, close to the compression spring (322), of the piston (321).

6. The fuel filter with the hand pump of claim 2, wherein: one end of the compression spring (322) is fixed on the bottom wall of the pump oil cavity (21), the other end of the compression spring is fixedly provided with a supporting block (7), and the supporting block (7) is elastically pressed on the piston (321).

7. The fuel filter with the hand pump of claim 1, wherein: advance oil pipe (22) and go out oil pipe (23) and all be provided with two, two advance oil pipe (22) intercommunication each other, two go out oil pipe (23) intercommunication each other, and two the oil feed direction of advancing oil pipe (22) is different, two the direction of producing oil of going out oil pipe (23) is different.

8. The fuel filter with the hand pump of claim 1, wherein: filter and be provided with discharge valve (28) on seat (2), discharge valve (28) run through filter seat (2) and with oil outlet pipe (23) intercommunication.

Images