Ventilation cap

Abstract

The utility model discloses a vent cap, which relates to the technical field of mechanical transmission box structures and high-pressure water pumps and comprises a vent cap body, a channel is arranged in the vent cap body, an oil blocking structure is fixedly arranged in the channel, and a seat plate is fixedly arranged on the periphery, close to the middle position, of the vent cap body. A ventilation cap is detachably and fixedly arranged at the end, away from the oil scale, of the ventilation cap body, a cavity is formed between the ventilation cap body and the ventilation cap, a ventilation water blocking structure is arranged between the ventilation cap body and the ventilation cap, and a gap is formed between the bottom of the ventilation cap and the top of the seat plate. The oil blocking structure can prevent engine oil in the oil tank from being discharged along with gas, and loss of the engine oil is avoided; the ventilation water-blocking structure is arranged between the ventilation cap body and the ventilation cap, external water can be prevented from entering the oil tank, and engine oil is prevented from being polluted.

Description

Technical Field

[0001] The utility model relates to a mechanical transmission box structure and the technical field of high-pressure water pumps, in particular to a ventilation cap. Background Art

[0002] Sanitation vehicles are special vehicles used for urban appearance tidying and cleaning. Sanitation vehicles are equipped with high-pressure water pumps. High-pressure water pumps can be used for cleaning, spraying, spraying, pressurizing and pumping. An oil dipstick is installed on the oil tank of the high-pressure water pump to detect the amount of oil inside it. At present, the oil dipstick is generally equipped with an exhaust valve, which is used to balance the internal and external pressure values ​​of the oil tank (i.e., pressure relief). When high-pressure gas is formed in the oil tank, the high-pressure gas can be discharged to the outside of the oil tank through the exhaust valve. However, when the high-pressure gas is discharged from the exhaust valve, it is easy to bring out the oil in the oil tank, causing oil loss; and when cleaning the sanitation vehicle, since the high-pressure water pump is also a position that is easily dirty, it is necessary to use a high-pressure water gun to flush the high-pressure water pump together. However, in the process of flushing the high-pressure water pump, external water can easily enter the oil tank through the exhaust valve on the oil dipstick, causing oil contamination. Utility Model Content

[0003] The purpose of the utility model is to provide a vent cap in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A breather cap comprises a breather cap body, an oil dipstick is arranged near one end of the breather cap body, a channel is arranged inside the breather cap body, the channel runs through the end of the breather cap body away from the oil dipstick, an oil blocking structure is fixedly arranged in the channel, a seat plate is fixedly arranged on the periphery of the breather cap body near the middle position, a breather cap is detachably fixedly arranged on the end of the breather cap body away from the oil dipstick, a cavity is formed between the breather cap body and the breather cap, a ventilation and water blocking structure is arranged between the breather cap body and the breather cap, and a gap is formed between the bottom of the breather cap and the top of the seat plate.

[0006] Preferably, the oil-blocking structure includes a substrate, a first baffle is fixedly arranged at an angle near one side of the substrate, two of the first baffles are in a group and are symmetrically distributed on the front and back sides of the substrate with the middle position of the substrate as the axis of symmetry, and a second baffle is fixedly arranged at an angle near the other side of the substrate, two of the second baffles are in a group and are symmetrically distributed on the front and back sides of the substrate with the middle position of the substrate as the axis of symmetry, there are multiple groups of the first baffles and the second baffles and are alternately distributed in sequence from top to bottom on the substrate; a boss is fixedly arranged on the top of the substrate, and the boss is annular.

[0007] Furthermore, the first baffle is tilted with the side of the substrate as the high point and the middle of the substrate as the low point; the second baffle is tilted with the side of the substrate as the high point and the middle of the substrate as the low point; the first baffle extends from the side close to the second baffle to the middle of the second baffle; the second baffle extends from the side close to the first baffle to the middle of the first baffle.

[0008] Preferably, the total number of groups of the first baffles and the second baffles is 3 to 7 groups.

[0009] Preferably, the ventilation and water-blocking structure includes a partition, and a partition is arranged on the outer side of the ventilation cap body. The side of the partition away from the ventilation cap body is in contact with the inner side of the ventilation cap. There are multiple partitions and they are distributed at equal intervals. Ventilation grooves are arranged on the partitions near the inner side of the ventilation cap, and the ventilation grooves on one partition are staggered with the ventilation grooves on the adjacent partitions.

[0010] Preferably, the number of the partitions is 4 to 6.

[0011] Furthermore, the staggered angle between the ventilation groove on one partition and the ventilation groove on the adjacent partition is 90 to 180 degrees.

[0012] Preferably, a gauze is fixedly provided in the channel of the vent cap body above the oil-blocking structure, a pressure block is fixedly provided near the middle position inside the vent cap, the bottom of the pressure block is in contact with the top of the gauze, and a accommodating cavity is provided on the pressure block.

[0013] Preferably, a card slot is provided on the vent cap body near the end of the vent cap, and the card slot is distributed in a ring shape on the vent cap body. A card block is provided on the inner side surface of the vent cap at a position corresponding to the card slot, and the card block is distributed in a ring shape on the inner side surface of the vent cap, and the card block is engaged and connected with the card slot.

[0014] Preferably, a protrusion is provided on the vent cap body near the end position of the vent cap, there are multiple protrusions and they are evenly distributed in the circumferential direction of the vent cap body, and a groove is provided on the inner side surface of the vent cap at a position corresponding to the protrusion, and the protrusion is snap-connected with the groove; the number of the protrusions is 3 to 6.

[0015] The beneficial effects of the utility model are as follows: (1) the utility model adds an oil-blocking structure in the channel of the breather cap body, and the multiple groups of first baffles and second baffles on the oil-blocking structure, which are alternately distributed in sequence, can block the oil in the fuel tank from being discharged along with the gas during exhaust, thereby avoiding the loss of the oil; (2) a ventilation and water-blocking structure is provided between the breather cap body and the breather cap, and the high-pressure gas in the fuel tank can be discharged through the ventilation and water-blocking structure. When the high-pressure water pump is flushed, the ventilation and water-blocking structure can block external water from entering the fuel tank, thereby avoiding the oil from being contaminated. At the same time, the ventilation and water-blocking structure can also block external dust and impurities from entering the fuel tank; (3) the breather cap body and the breather cap are detachably connected by means of a slot and a block, which makes it convenient and quick to install or replace the internal accessories of the oil dipstick; (4) a protrusion and a groove are provided between the breather cap body and the breather cap to prevent the breather cap from rotating relative to the breather cap body, thereby ensuring the stability of the breather cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the first stereogram of the overall structure of the utility model;

[0017] Figure 2 This is the overall structural front view of the utility model;

[0018] Figure 3 It is a cutaway stereogram of the overall structure of the utility model;

[0019] Figure 4 It is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the vent cap body of the utility model;

[0021] Figure 6 It is a three-dimensional diagram of the vent cap of the utility model;

[0022] Figure 7 This is a first stereoscopic diagram of the oil-blocking structure of the utility model;

[0023] Figure 8 This is the second stereoscopic view of the oil-blocking structure of the utility model.

[0024] Description of reference numerals:

[0025] 1. Breathing cap body; 11. Seat plate; 12. Through hole; 13. Oil dipstick; 14. Passage; 141. Mounting groove; 15. Partition plate; 151. Breathing groove; 16. Card slot; 17. Protrusion;

[0026] 2. vent cap; 21. pressing block; 211. accommodating cavity; 22. clamping block; 23. groove;

[0027] 3. Clearance;

[0028] 4. Oil-blocking structure; 41. Base plate; 42. First baffle plate; 43. Second baffle plate; 44. Boss;

[0029] 5. Gauze;

[0030] 6. Cavity. DETAILED DESCRIPTION

[0031] The utility model is further described below in conjunction with the accompanying drawings:

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the utility model provides a breather cap, including a breather cap body 1, and an oil dipstick 13 is arranged near one end of the breather cap body 1, and the oil dipstick 13 is used to detect the amount of oil in the oil tank. A channel 14 is arranged inside the breather cap body 1, and the channel 14 runs through the end of the breather cap body 1 away from the oil dipstick 13. A through hole 12 is processed on the breather cap body 1 near the oil dipstick 13, and the through hole 12 is connected to the channel 14. There are multiple through holes 12 and they are evenly spaced around the circumference of the breather cap body 1. In this embodiment, the number of through holes 12 is 4. An oil-blocking structure 4 is fixedly arranged in the channel 14. A seat plate 11 is fixedly arranged on the periphery of the breather cap body 1 near the middle position, and the seat plate 11 ensures that the breather cap body 1 is tightly fitted to the outer surface of the oil tank when it is fixedly installed on the oil tank. The breather cap body 1 is provided with an external thread between the seat plate 11 and the through hole 12, so that the breather cap body 1 and the oil tank are connected by threads to fix the breather cap body 1 on the oil tank. The breather cap body 1 is detachably fixed with a breather cap 2 at one end away from the oil dipstick 13, and a cavity 6 is formed between the breather cap body 1 and the breather cap 2, and the cavity 6 facilitates the passage of high-pressure gas. A ventilation and water-blocking structure is provided between the breather cap body 1 and the breather cap 2, and a gap 3 is formed between the bottom of the breather cap 2 and the top of the seat plate 11, and the gap 3 facilitates the discharge of high-pressure gas inside the oil tank.

[0033] like Figure 3 , Figure 7 and Figure 8As shown, on the basis of the above embodiment, further, the oil-blocking structure 4 includes a substrate 41, and a first baffle 42 is fixedly arranged on the substrate 41 near the left side and tilted, and two first baffles 42 are grouped and symmetrically distributed on the front and back sides of the substrate 41 with the middle position of the substrate 41 as the symmetry axis; a second baffle 43 is fixedly arranged on the substrate 41 near the right side and tilted, and two second baffles 43 are grouped and symmetrically distributed on the front and back sides of the substrate 41 with the middle position of the substrate 41 as the symmetry axis, and there are multiple groups of first baffles 42 and second baffles 43 and they are alternately distributed from top to bottom on the substrate 41. A boss 44 is fixedly arranged on the top of the substrate 41, and the boss 44 is annular. A mounting groove 141 is arranged in the channel 14, and the boss 44 cooperates with the mounting groove 141 to place the oil-blocking structure 4 in the channel 14. The oil-blocking structure 4 can be made of plastic material. The first baffle 42 is tilted with the left side of the substrate 41 as the high point and the middle position of the substrate 41 as the low point; the second baffle 43 is tilted with the right side of the substrate 41 as the high point and the middle position of the substrate 41 as the low point. The first baffle 42 and the second baffle 43 are tilted alternately and successively, which can block and guide the oil entering the channel 14 to avoid the loss of the oil. The first baffle 42 extends to the middle position of the second baffle 43 on the side close to the second baffle 43; the second baffle 43 extends to the middle position of the first baffle 42 on the side close to the first baffle 42. The first baffle 42 and the second baffle 43 extend to each other and cross and overlap in the vertical direction, which has a good blocking effect on the oil and can be exhausted freely. The total number of groups of the first baffle 42 and the second baffle 43 is 3 to 7 groups. In this embodiment, the total number of groups of the first baffle 42 and the second baffle 43 is 3 groups, of which there are 2 groups of the first baffle 42 and 1 group of the second baffle 43.

[0034] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, on the basis of the above embodiment, the ventilation and water blocking structure further includes a partition 15, and the partition 15 is arranged on the outer side of the vent cap body 1, and the side of the partition 15 away from the vent cap body 1 is in contact with the inner side of the vent cap 2, that is, the outer side of the partition 15 is tightly combined with the inner side of the vent cap 2 to prevent gas from passing through and ensure a certain sealing. There are multiple partitions 15 and they are distributed at equal intervals. The number of partitions 15 is 4 to 6. Generally, the more the number of partitions 15, the better the water blocking and dustproof effect. In this embodiment, the number of partitions 15 is 5. A ventilation groove 151 is provided on the partition 15 near the inner side surface of the ventilation cap 2. The ventilation groove 151 on one partition 15 is staggered with the ventilation groove 151 on the adjacent partition 15, wherein the staggered angle between the ventilation groove 151 on one partition 15 and the ventilation groove 151 on the adjacent partition 15 is 90 to 180 degrees. In this embodiment, the staggered angle between the ventilation groove 151 on one partition 15 and the ventilation groove 151 on the adjacent partition 15 is 90 degrees. The staggered distribution of the ventilation grooves 151 on adjacent partitions 15 can achieve both ventilation and water-blocking and dust-proof effects.

[0035] like Figure 3 and Figure 4 As shown, on the basis of the above embodiment, a gauze 5 is fixedly arranged above the oil-blocking structure 4 in the channel 14 of the vent cap body 1, and the gauze 5 can further block oil and ventilate. A pressing block 21 is fixedly arranged near the middle position inside the vent cap 2, and the bottom of the pressing block 21 contacts the top of the gauze 5. The pressing block 21 can press the gauze 5 above the oil-blocking structure 4 to prevent the gauze 5 from shaking. A accommodating cavity 211 is arranged on the pressing block 21, and the accommodating cavity 211 can reduce the weight of the pressing block 21 and save raw materials.

[0036] like Figure 3 , Figure 5 and Figure 6 As shown, on the basis of the above embodiment, further, a card slot 16 is provided on the vent cap body 1 near the end of the vent cap 2, the card slot 16 is distributed in an annular manner on the vent cap body 1, and a card block 22 is provided on the inner side of the vent cap 2 at a position corresponding to the card slot 16, the card block 22 is distributed in an annular manner on the inner side of the vent cap 2, and the card block 22 is connected by card slot 16. The vent cap body 1 and the vent cap 2 are detachably connected by the card slot 16 and the card block 22, which is convenient and quick to install or replace the internal accessories of the oil dipstick.

[0037] like Figure 5 and Figure 6As shown, on the basis of the above embodiment, further, a protrusion 17 is provided at the end position of the vent cap body 1 close to the vent cap 2, there are multiple protrusions 17 and they are evenly distributed in the circumferential direction of the vent cap body 1, and a groove 23 is provided on the inner side of the vent cap 2 at a position corresponding to the protrusion 17, and the protrusion 17 is engaged with the groove 23; wherein, the number of protrusions 17 is 3 to 6. The protrusion 17 and the groove 23 are engaged between the vent cap body 1 and the vent cap 2, which can prevent the vent cap 2 from rotating relative to the vent cap body 1 and ensure the stability of the vent cap 2.

[0038] like Figures 1 to 8 As shown, when working, the breather cap body 1 is fixedly connected to the oil tank by threads. When high-pressure gas is generated inside the oil tank, the high-pressure gas can enter the channel 14 through the through hole 12 on the breather cap body 1, and the first baffle 42 and the second baffle 43 on the oil-blocking structure 4 in the channel 14 can allow the gas in the channel 14 to pass through and block the oil in the channel 14 from passing through. The gauze 5 above the oil-blocking structure 4 in the channel 14 can block a small amount of oil passing through the oil-blocking structure 4 again to retain the oil and allow the gas to pass through. The gas passing through the gauze 5 enters the cavity 6 between the breather cap body 1 and the breather cap 2, and the gas enters the gap 3 between the breather cap 2 and the seat plate 11 through the ventilation grooves 151 on the multiple groups of partitions 15 in turn, and finally enters the atmosphere. When the high-pressure water pump needs to be cleaned, use a high-pressure water gun to spray water to clean the high-pressure water pump. Due to the blocking effect of multiple partitions 15, external water cannot enter the interior of the fuel tank through the cavity 6 between the breather cap 2 and the breather cap body 1, and external dust and impurity particles cannot enter the interior of the fuel tank through the cavity 6 between the breather cap 2 and the breather cap body 1.

[0039] The utility model is suitable for use on high-pressure water pumps of sanitation vehicles, road sweepers and sprinkler vehicles.

[0040] The above are only preferred embodiments of the present invention, and do not limit the scope of the present invention. A person skilled in the art should understand that various changes, modifications, substitutions and deformations can be made to these embodiments without departing from the principles and purposes of the present invention, which should all be included in the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A vent cap, comprising a vent cap body, wherein an oil dipstick is provided near one end of the vent cap body, wherein: A channel is provided inside the vent cap body, and the channel runs through the end of the vent cap body away from the oil dipstick, an oil-blocking structure is fixedly provided in the channel, a seat plate is fixedly provided on the periphery of the vent cap body near the middle position, a vent cap is detachably fixedly provided on one end of the vent cap body away from the oil dipstick, a cavity is formed between the vent cap body and the vent cap, a ventilation and water-blocking structure is provided between the vent cap body and the vent cap, and a gap is formed between the bottom of the vent cap and the top of the seat plate.

2. A vent cap according to claim 1, characterized in that: The oil-blocking structure includes a substrate, a first baffle is fixedly arranged obliquely near one side of the substrate, two of the first baffles are grouped together and symmetrically distributed on the front and back sides of the substrate with the middle position of the substrate as the symmetry axis, a second baffle is fixedly arranged obliquely near the other side of the substrate, two of the second baffles are grouped together and symmetrically distributed on the front and back sides of the substrate with the middle position of the substrate as the symmetry axis, there are multiple groups of the first baffles and the second baffles and are alternately distributed in sequence from top to bottom on the substrate; a boss is fixedly arranged on the top of the substrate, and the boss is ring-shaped.

3. A vent cap according to claim 2, characterized in that: The first baffle is tilted with the side of the substrate as the high point and the middle of the substrate as the low point; the second baffle is tilted with the side of the substrate as the high point and the middle of the substrate as the low point; the first baffle extends from the side close to the second baffle to the middle of the second baffle; the second baffle extends from the side close to the first baffle to the middle of the first baffle.

4. A vent cap according to claim 2 or 3, characterized in that: The total number of groups of the first baffles and the second baffles is 3 to 7 groups.

5. A vent cap according to claim 1, characterized in that: The ventilation and water-blocking structure includes a partition, and a partition is arranged on the outer side of the ventilation cap body. The side of the partition away from the ventilation cap body is in contact with the inner side of the ventilation cap. There are multiple partitions and they are distributed at equal intervals. Ventilation grooves are arranged on the partitions near the inner side of the ventilation cap, and the ventilation grooves on one partition are staggered with the ventilation grooves on the adjacent partitions.

6. A vent cap according to claim 5, characterized in that: The number of the partitions is 4 to 6.

7. A vent cap according to claim 5 or 6, characterized in that: The staggered angle between the ventilation groove on one partition plate and the ventilation groove on the adjacent partition plate is 90 to 180 degrees.

8. A vent cap according to claim 1, characterized in that: A gauze is fixedly arranged in the channel of the vent cap body above the oil-blocking structure, a pressure block is fixedly arranged near the middle position inside the vent cap, the bottom of the pressure block contacts the top of the gauze, and a accommodating cavity is arranged on the pressure block.

9. A vent cap according to claim 1, characterized in that: A card slot is arranged on the vent cap body near the end of the vent cap, and the card slot is distributed in a ring shape on the vent cap body. A card block is arranged on the inner side surface of the vent cap at a position corresponding to the card slot, and the card block is distributed in a ring shape on the inner side surface of the vent cap, and the card block is engaged and connected with the card slot.

10. A vent cap according to claim 1, characterized in that: A protrusion is arranged on the vent cap body near the end of the vent cap, there are multiple protrusions and they are evenly distributed in the circumferential direction of the vent cap body, a groove is arranged on the inner side surface of the vent cap at a position corresponding to the protrusion, and the protrusion is snap-connected with the groove; the number of the protrusions is 3 to 6.

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