CN213627728U - Oil pump seat and diesel engine thereof - Google Patents

Abstract

An oil pump seat for diesel engine, including pump pedestal body (10) and diaphragm valve (20), the diaphragm valve covers on the pump pedestal body, the pump pedestal body is formed with cavity (16) down, go up cavity (11) and go out air cavity (14), the diaphragm valve has valve body (22) and lug (24), the one end of lug is connected in inside elastic component (223) of valve body, the other end and air inlet (142) looks adaptation of going out the air cavity, and hug closely going up along of air inlet, when the cavity is gone up in the mixed gas passes through the inlet port entering cavity down, elastic component elastic deformation and raise the lug under pressure differential's effect, in order can allow the mixed gas to get into out the air cavity through last cavity, the utility model discloses can effectively improve the oil strain ventilation effect and reduce the technology degree of difficulty and cost. The utility model also provides a diesel engine including above-mentioned oil pump seat.

Description

Oil pump seat and diesel engine thereof

Technical Field

The utility model relates to an oil pump seat for diesel engine, especially an oil pump seat of taking diaphragm valve. In addition the utility model discloses still relate to the diesel engine including above-mentioned oil pump seat.

Background

The diesel engine is widely applied to generator matching power, three-wheeled locomotives, irrigation matching power and the like, and the breather is an essential part for reducing the leakage of the engine oil of the diesel engine and reducing the consumption of the engine oil. In the existing diesel engine, a space for placing a respirator body is usually cast on a gear chamber cover or a cylinder head cover, and a labyrinth cavity for oil-gas separation is also arranged in the space, so that the parts have complex structures, and the difficulty and cost of a casting process are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an oil pump seat for diesel engine can effectively improve the oil strain ventilation effect and reduce the technology degree of difficulty and cost.

The utility model provides an oil pump seat for diesel engine, including a pump pedestal and a diaphragm valve. The pump base body is provided with an upper chamber, an air inlet, an air outlet chamber and a lower chamber. The air outlet cavity is provided with an air inlet and an air outlet, and one end of the air inlet is arranged in the upper cavity. The lower chamber is communicated with the upper chamber through an air inlet. The diaphragm valve has a valve body and a projection. The diaphragm valve covers the upper part of the upper cavity. An elastic part is fixed in the valve body. The lug is installed on the valve body, and the one end of lug is connected in the elastic component, and the other end and the air inlet looks adaptation of lug to hug closely the last edge of air inlet, when the mixed gas passes through the inlet port and gets into the upper chamber in the lower chamber, the elastic component elastic deformation and the raise lug under the effect of pressure differential, in order to allow the mixed gas to pass through the upper chamber and get into out the gas cavity.

The utility model provides an oil pump seat for diesel engine can be with the effect that the diaphragm valve module integration acted as the respirator on the oil pump seat of diesel engine, utilizes the elastic force in the diaphragm valve to reach the effect that the respirator opened and close before, and releases the space in more palace chambeies, effectively improves oil strain ventilation effect to simple structure, simple to operate.

In yet another exemplary embodiment of an oil pump mount for a diesel engine, the lower chamber has a first chamber, a second chamber and a partition separating the first chamber from the second chamber, the second chamber having a plurality of baffles arranged in a staggered pattern.

In another exemplary embodiment of the oil pump seat for a diesel engine, the lower chamber further includes a cover plate connected to the bottom of the lower chamber, and the cover plate is provided with an oil return hole, the oil return hole is communicated with the first chamber, and a check valve is disposed in the oil return hole.

In another exemplary embodiment of the oil pump mount for a diesel engine, the cover plate further includes a spring plate fixed to the cover plate by bolts and fitted to the oil return hole to open or close the oil return hole by a pressure difference.

In another exemplary embodiment of the oil pump seat for the diesel engine, an oil return small hole is formed in the bottom of the air outlet cavity arranged in the upper cavity, and the oil return small hole is connected with the first cavity.

The utility model also provides a double-cylinder diesel engine, including a casing, have a crankcase in it, the lower cavity of oil pump seat sets up on the crankcase to can draw forth the mixed gas in the crankcase and get into in the lower cavity outside the crankcase.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is an exploded view of an exemplary embodiment of an oil pump mount.

FIG. 2 is a schematic cross-sectional view of an exemplary embodiment of a diaphragm valve.

FIG. 3 is a schematic diagram of an exemplary embodiment of an upper chamber.

FIG. 4 is a schematic diagram of an exemplary embodiment of a lower chamber.

FIG. 5 is an exploded view of an exemplary embodiment of a lower chamber.

Description of the reference symbols

10 pump seat body

11 upper chamber

12 air intake

14 air outlet cavity

142 air intake hole

144 air outlet

146 oil return aperture

16 lower chamber

161 first chamber

162 second chamber

163 cover plate

164 oil return hole

165 baffle

166 spring lamination

167 baffle

20 diaphragm valve

22 valve body

223 elastic member

24 bumps.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product.

Fig. 1 is an exploded view of an exemplary embodiment of an oil pump mount. FIG. 2 is a schematic cross-sectional view of one illustrative embodiment of the diaphragm valve 20 of FIG. 1. Referring to fig. 1 and 2, the oil pump mount includes a pump mount body 10 and a diaphragm valve 20.

The diaphragm valve 20 has a valve body 22, an elastic member 223 and a projection 24. The valve body 22 is generally cylindrical, a circular recess is formed in the center of the top surface of the valve body, the circular recess is matched with an elastic member 223 arranged in the center of the inside of the valve body 22, one end of the elastic member 223 is sleeved on the recess in the top of the valve body 22, the other end of the elastic member 223 is fixedly connected with the bump 24, the elastic member 223 can be a pressure spring with a proper shape, the bump 24 is arranged in an inverted state and is embedded in the bottom of the valve body 22, the protruding portion of the bump 24 is arranged outside the valve body 22, and the bump 24 and the elastic member 223 are matched to generate elastic deformation, so that the material, such as rubber, connecting the bottom of the valve body 22 and the bump 24 needs to have elasticity.

Referring to fig. 3 and 4, the pump housing 10 has an upper chamber 11 and an outlet chamber 14, the upper chamber 11 is cylindrical, and has a shape similar to the valve body 22 and a size suitable for the valve body, and both have screw holes with the same size for connection on the circumference, and are fixed by bolts. The air outlet cavity 14 has an air inlet 142 and an air outlet 144, and is of a rectangular parallelepiped shape as a whole, in the air outlet cavity 14, the air inlet 142 is partially disposed inside the upper cavity 11, the air outlet 144 is partially disposed outside the upper cavity 11, the air inlet 142 and the air outlet 144 of the air outlet cavity 14 face the vertical upward direction, the size of the air inlet 142 is matched with the protruding portion of the bump 24, and the protruding portion of the bump 24 abuts against the air inlet 142 and completely seals the air inlet 142.

Referring to fig. 4, the lower chamber 16 includes a partition 167 and three baffles 165 (only one of which is labeled), wherein the partition 167 is vertically disposed on the pump housing 10 and divides the lower chamber 16 into a first chamber 161 and a second chamber 162, and the three baffles 165 are sequentially and alternately disposed in the second chamber 162 and are perpendicular to the partition 167 and the chamber wall of the second chamber 162.

Referring to fig. 5, the bottom of the lower chamber 16 is provided with a cover plate 163, the cover plate 163 is fitted to the lower chamber 16, and is fixedly connected by bolts, the cover plate 163 further has an oil return hole 164, the oil return hole 164 opens into the first chamber 161, and a check valve 168 is provided in the oil return hole 164, the check valve 168 allows the fluid in the first chamber 161 to flow out only from the first chamber 161 to the outside, a spring plate 166 is provided on the cover plate 163 to be fitted into the oil return hole 164, one end of the spring plate 166 is fixed to the cover plate 163 by a bolt, and the size of the spring piece 166 is slightly larger than that of the oil return hole 164, so that the spring piece 166 can only deform in one direction, referring to fig. 3, the upper chamber 11 further has two air inlet holes 12, the two air inlet holes 12 communicate the upper chamber 11 with the lower chamber 16, and an oil return small hole 146 is formed in the air outlet chamber 14 at a position right below the air inlet 142 and communicates the air outlet chamber 14 with the first chamber 161 of the lower chamber 16.

Referring to fig. 1 to 5, when the oil-gas mixture enters the lower chamber 16 from a crankcase (not shown) in the diesel engine, because of the density difference between oil droplets and gas, the oil droplets impact and are adsorbed on the baffle 165 in the second chamber 162 and the chamber wall and flow down along the wall due to inertia effect in the flow, so as to improve the ventilation effect of oil filtering, the mixture enters the upper chamber 11 through the air outlet, the bump 24 rises due to positive pressure formed by the mixture, the air inlet 142 of the air outlet chamber 14 is opened, the mixture continues to enter the air outlet chamber 14 and then is exhausted into the atmosphere through the air outlet 144, during the compression stroke of the diesel engine, the whole oil pump seat is in a negative pressure state, the elastic member 223 inside the valve body 22 generates elastic deformation, so that the bump 24 is tightly attached to the air inlet 142, and reaches the state of closing the air inlet 142, and at this time, the spring leaf 166 on the cover, the oil accumulated in the outlet chamber 14 flows into the first chamber 161 through the oil return small hole 146, and flows into the crankcase of the diesel engine through the check valve 168 in the oil return hole 164 together with the oil accumulated in the lower chamber 16.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention. .

Claims (6)

1. An oil pump mount for a diesel engine, comprising:

a pump housing (10) formed with:

an upper chamber (11) in which,

an air inlet hole (12),

an outlet chamber (14) having an inlet (142) and an outlet (144), with one end of the inlet (142) disposed in the upper chamber (11), an

A lower chamber (16) communicating with said upper chamber (11) via said intake aperture (12); and

a diaphragm valve (20) overlying said upper chamber (11), said diaphragm valve (20) comprising:

a valve body (22) having an elastic member (223) fixed therein, and

and the lug (24) is arranged on the valve body (22), one end of the lug (24) is connected to the elastic part (223), the other end of the lug (24) is matched with the air inlet (142) and is tightly attached to the upper edge of the air inlet (142), and the elastic part (223) elastically deforms and lifts the lug (24) under the action of pressure difference so as to communicate the upper chamber (11) with the air outlet cavity (14).

2. Oil pump mount according to claim 1, wherein the lower chamber (16) has:

a first chamber (161);

a second chamber (162) having a plurality of baffles (165) staggered therein; and

a partition (167) separating the first chamber (161) from the second chamber (162).

3. The oil pump seat according to claim 2, wherein the lower chamber (16) further comprises:

the cover plate (163) is connected to the bottom of the lower chamber (16), an oil return hole (164) is formed in the cover plate (163) and communicated with the first chamber (161), and a one-way valve (168) is arranged in the oil return hole (164).

4. The oil pump mount of claim 3, wherein the cover plate (163) further comprises:

and the spring piece (166) is fixed on the cover plate (163) and is matched with the oil return hole (164), and the oil return hole (164) is opened or closed under the action of pressure difference.

5. The oil pump seat as claimed in claim 2, wherein the bottom of the air outlet cavity (14) is opened with an oil return small hole (146) communicated with the first cavity (161).

6. A diesel engine, comprising:

a housing (30) having a crankcase (32) therein; and

the oil pump mount according to any one of claims 1 to 5, wherein said lower chamber (16) is provided on said crankcase (32) and is capable of introducing a gas mixture in said crankcase (32) into said lower chamber (16).

Images