An oil leakage-proof manual oil pump

Abstract

The application relates to the technical field of oil pump equipment, and discloses an oil leakage prevention manual oil pump which comprises a box body, a pump body and an elastic sealing sleeve. An accommodating cavity is arranged in the box body, the accommodating cavity is open at one end in a third direction to form a first opening, and a gas exchange hole is arranged in the side wall of the box body and communicates with the accommodating cavity. The pump body is connected to the box body and covers the first opening. The elastic sealing sleeve is arranged in the accommodating cavity, one end of the elastic sealing sleeve towards the pump body is connected to the pump body, an oil storage cavity is arranged in the elastic sealing sleeve, and the oil storage cavity communicates with the pump body. The pump body can input oil into the oil storage cavity, and the oil in the oil storage cavity can be output through the pump body. The application can prevent the oil in the oil storage cavity from leaking.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil pump equipment, in particular to a leak-proof manual oil pump. BACKGROUND

[0002] Due to the characteristics of large load capacity and flexible transport distance, trucks are widely used in the logistics and transportation industries. In order to ensure the safety and reliability of trucks, regular inspection and maintenance are required, especially for the core component, engine. The current mainstream design of trucks tends to be flat-headed, with the engine placed under the cab, which brings inconvenience to regular maintenance of the engine.

[0003] In order to facilitate the maintenance of the power system of the truck, especially the inspection, maintenance and repair of the engine, the truck cab must be able to be flipped. The flipping mode of the truck cab flipping and lifting system includes manual torsion bar flipping, manual hydraulic flipping or electric flipping. The above three flipping modes are usually equipped with a manual oil pump for or assisting in the flipping of the truck cab.

[0004] In the prior art, the manual oil pump needs to input oil into the oil storage cavity of the oil tank to realize oil filling, or extract oil from the oil storage cavity of the oil tank to realize oil discharge. Therefore, the manual oil pump is equipped with a breather plug to vent the oil tank to prevent negative pressure in the oil storage cavity during oil filling and oil discharge, which causes the manual oil pump to be unable to extract oil. However, this venting method also causes oil in the oil tank to leak to the outside through the breather plug. SUMMARY

[0005] The purpose of the present application is to provide a leak-proof manual oil pump that can prevent oil in the oil storage cavity from leaking.

[0006] In order to achieve the above purpose, the present application provides a leak-proof manual oil pump, comprising a tank body, a pump body and an elastic sealing sleeve. The tank body has an accommodating cavity inside, which is open at one end in the third direction to form a first opening. The side wall of the tank body is provided with a breather hole that penetrates through and communicates with the accommodating cavity. The pump body is connected to the tank body and covers the first opening. The elastic sealing sleeve is arranged in the accommodating cavity, one end of the elastic sealing sleeve towards the pump body is connected to the pump body, and the inside of the elastic sealing sleeve is provided with an oil storage cavity, which communicates with the pump body. The pump body can input oil into the oil storage cavity, and the oil in the oil storage cavity can be output through the pump body.

[0007] In some embodiments, the resilient sealing sleeve includes a body and a mounting portion; the body has an oil storage chamber inside, and the oil storage chamber is open at one end facing the pump body to form a second opening; the mounting portion is connected to the end of the body facing the pump body and surrounds the second opening; wherein the body is connected to the pump body through the mounting portion so that the pump body can cover the second opening and seal the oil storage chamber.

[0008] In some embodiments, a first connector and a second connector are also included; the mounting portion has a first mounting hole and a second mounting hole extending along the third direction, the first mounting hole being located on one side of the second opening in the first direction, and the second mounting hole being located on the other side of the second opening in the first direction, the first direction intersecting the third direction; a first connecting portion is provided on the inner wall of the first opening on one side in the first direction, and a second connecting portion is provided on the inner wall of the first opening on the other side in the first direction, the first connecting portion having a first connecting hole extending along the third direction and corresponding to the position of the first mounting hole, and the second connecting portion having a first connecting hole extending along the third direction and corresponding to the position of the first mounting hole; The pump body has a first through hole that passes through the third direction and corresponds to the position of the first connecting hole, and a second through hole that passes through the third direction and corresponds to the position of the second connecting hole; the first connecting member passes through the first through hole and the first mounting hole in sequence along the third direction and is connected to the first connecting hole so that the pump body and the first connecting member abut against the mounting part at both ends of the third direction; the second connecting member passes through the second through hole and the second mounting hole in sequence along the third direction and is connected to the second connecting hole so that the pump body and the second connecting member abut against the mounting part at both ends of the third direction.

[0009] In some embodiments, a third connector and a fourth connector are also included; the mounting portion has a third mounting hole and a fourth mounting hole extending along the third direction, the third mounting hole being located on one side of the second opening in the second direction, and the fourth mounting hole being located on the other side of the second opening in the second direction, the first direction and the second direction intersecting to form a first plane, and the third direction intersecting the first plane; a third connecting portion is provided on the inner wall of the first opening on one side in the second direction, and a fourth connecting portion is provided on the inner wall of the first opening on the other side in the second direction, the third connecting portion having a third connecting hole extending along the third direction and corresponding to the position of the third mounting hole, and the fourth connecting portion having a third connecting hole extending along the third direction. A fourth connecting hole is provided, which extends through three directions and corresponds to the position of the fourth mounting hole; the pump body has a third through hole extending along the third direction and corresponding to the position of the third connecting hole; the third connecting member passes through the third through hole and the third mounting hole in sequence along the third direction and is connected to the third connecting hole so that the pump body and the third connecting member respectively abut against the two ends of the mounting part along the third direction; the fourth connecting member passes through the fourth through hole and the fourth mounting hole in sequence along the third direction and is connected to the fourth connecting hole so that the pump body and the fourth connecting member respectively abut against the two ends of the mounting part along the third direction.

[0010] In some embodiments, the outer wall of the body is provided with an inwardly recessed groove; the outer walls of the body in the first direction are provided with the groove, the outer walls of the body in the second direction are provided with the groove, the position of the ventilation hole corresponds to the position of any one of the grooves, the first direction and the second direction intersect to form a first plane, and the third direction intersects with the first plane.

[0011] In some embodiments, a metal gasket is also included, which is connected to the mounting portion.

[0012] In some embodiments, the elastic sealing sleeve is made of nitrile rubber, fluororubber, or neoprene rubber.

[0013] In some embodiments, the ventilation hole is located on the side wall of the housing at the end away from the pump body.

[0014] In some embodiments, the body includes a base portion and a corrugated pipe portion connected to the base portion, the mounting portion being connected to the end of the corrugated pipe portion in the third direction away from the base portion, the corrugated pipe portion having multiple crests and multiple troughs, the multiple crests and multiple troughs being alternately arranged on the corrugated pipe portion in the third direction.

[0015] Compared with the prior art, the oil-proof manual oil pump of this invention has the following advantages: By placing the elastic sealing sleeve inside the receiving cavity of the housing and connecting the pump body to the oil storage cavity of the elastic sealing sleeve, when the pump body inputs oil into the oil storage cavity and expands the oil storage cavity, the elastic sealing sleeve can expand accordingly to squeeze the air in the receiving cavity to the outside through the ventilation hole. When the oil in the oil storage cavity is output through the pump body, the outside air can enter the receiving cavity through the ventilation hole, causing the elastic sealing sleeve to contract accordingly to shrink the oil storage cavity. Therefore, this invention can maintain the pressure in the oil storage cavity and the outside pressure by expanding or shrinking the oil storage cavity, so as to avoid the oil storage cavity being unable to pump oil due to negative pressure. At the same time, the oil inlet and outlet of the oil storage cavity do not require the oil storage cavity to be ventilated with the outside, thereby preventing the oil in the oil storage cavity from leaking. Attached Figure Description

[0016] Figure 1 This is a front view of a leak-proof manual oil pump provided in an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional view of a leak-proof manual oil pump provided in an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a structural diagram of the box provided in an embodiment of the present invention;

[0020] Figure 5 This is a top view of the box provided in an embodiment of the present invention;

[0021] Figure 6 This is a structural diagram of the elastic sealing sleeve provided in an embodiment of the present invention;

[0022] Figure 7 This is a front view of the elastic sealing sleeve provided in an embodiment of the present invention.

[0023] Figure 8 This is a top view of the elastic sealing sleeve provided in an embodiment of the present invention;

[0024] Figure 9 This is a bottom view of the main body provided in an embodiment of the present invention.

[0025] In the diagram, 1 is the tank body; 11 is the receiving cavity; 12 is the ventilation port; 111 is the first connecting part; 112 is the second connecting part; 113 is the third connecting part; 114 is the fourth connecting part; 115 is the first opening; 1111 is the first connecting hole; 1121 is the second connecting hole; 1131 is the third connecting hole; and 1141 is the fourth connecting hole.

[0026] 2. Pump body;

[0027] 3. Elastic sealing sleeve; 31. Body; 32. Mounting part; 311. Base part; 312. Bellows part; 321. First mounting hole; 322. Second mounting hole; 323. Third mounting hole; 324. Fourth mounting hole; 3121. Crest; 3122. Trough;

[0028] 301, oil storage cavity; 302, groove; 3011, second opening;

[0029] 4. Metal gasket;

[0030] 5. First connecting component;

[0031] 6. Second connector;

[0032] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0033] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0034] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom" are used interchangeably.

[0035] The terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] like Figures 1-5 As shown in the figure, a preferred embodiment of the present invention provides a leak-proof manual oil pump, comprising a housing 1, a pump body 2, and an elastic sealing sleeve 3. The housing 1 has an internal cavity 11, with one end of the cavity 11 open in the Z-direction to form a first opening 115. A ventilation hole 12, penetrating and communicating with the cavity 11, is provided on the side wall of the housing 1. The pump body 2 is connected to the housing 1 and covers the first opening 115. The elastic sealing sleeve 3 is disposed within the cavity 11, with one end of the elastic sealing sleeve 3 facing the pump body 2 connected to the pump body 2. An oil storage chamber 301 is provided inside the elastic sealing sleeve 3, and the oil storage chamber 301 is connected to the pump body 2. The pump body 2 can input oil into the oil storage chamber 301, and the oil in the oil storage chamber 301 can be output through the pump body 2.

[0040] Based on this technical solution, by placing the elastic sealing sleeve 3 inside the receiving cavity 11 of the housing 1, and connecting the pump body 2 to the oil storage cavity 301 of the elastic sealing sleeve 3, when the pump body 2 inputs oil into the oil storage cavity 301 and expands the oil storage cavity 301, the elastic sealing sleeve 3 can expand accordingly to squeeze the air in the receiving cavity 11 out to the outside through the ventilation hole 12. When the oil in the oil storage cavity 301 is output through the pump body 2, the outside air can enter the receiving cavity 11 through the ventilation hole 12 to cause the elastic sealing sleeve 3 to contract accordingly to shrink the oil storage cavity 301. Therefore, the present invention can keep the pressure inside the oil storage cavity 301 balanced with the outside pressure by expanding or shrinking the oil storage cavity 301, so as to avoid the oil storage cavity 301 being unable to pump oil due to negative pressure. At the same time, the oil inlet and outlet of the oil storage cavity 301 do not require the oil storage cavity 301 to be ventilated with the outside, thereby preventing the oil in the oil storage cavity 301 from leaking.

[0041] The external pressure is atmospheric pressure.

[0042] The pump body 2 can input oil into the oil storage chamber 301 through any component such as an oil pipe or an oil nozzle, without any limitation.

[0043] The oil in the oil storage chamber 301 can be connected to the pump body 2 through any component such as the oil outlet pipe or oil outlet nozzle, so that the oil in the oil storage chamber 301 can be output through the pump body 2. No limitation is made here.

[0044] The elastic sealing sleeve 3 is made of nitrile rubber, fluororubber, or neoprene rubber.

[0045] See Figure 1 and Figure 2 A preferred embodiment of the present invention provides a leak-proof manual oil pump that further includes a first connector 5 and a second connector 6.

[0046] The ventilation hole 12 is located on the side wall of the end of the housing 1 away from the pump body 2.

[0047] See Figures 6-9 The elastic sealing sleeve 3 provided in this embodiment of the invention includes a body 31 and a mounting part 32; the body 31 has an oil storage cavity 301 inside, and the oil storage cavity 301 is open at one end facing the pump body 2 to form a second opening 3011; the mounting part 32 is connected to the end of the body 31 facing the pump body 2 and surrounds the second opening 3011; wherein, the body 31 is connected to the pump body 2 through the mounting part 32 so that the pump body 2 can cover the second opening 3011 and seal the oil storage cavity 301.

[0048] See Figures 2-8The mounting part 32 has a first mounting hole 321 and a second mounting hole 322 that pass through in the third direction Z. The first mounting hole 321 is located on one side of the second opening 3011 in the first direction X, and the second mounting hole 322 is located on the other side of the second opening 3011 in the first direction X. The first direction X intersects with the third direction Z.

[0049] The first opening 115 has a first connecting part 111 on one inner wall in the first direction X, and a second connecting part 112 on the other inner wall in the first direction X. The first connecting part 111 has a first connecting hole 1111 that passes through in the third direction Z and corresponds to the position of the first mounting hole 321. The second connecting part 112 has a second connecting hole 1121 that passes through in the third direction Z and corresponds to the position of the second mounting hole 322.

[0050] The pump body 2 has a first through hole that extends along the third direction Z and corresponds to the position of the first connecting hole 1111. The pump body 2 also has a second through hole that extends along the third direction Z and corresponds to the position of the second connecting hole 1121.

[0051] The first connector 5 passes through the first through hole and the first mounting hole 321 in sequence along the third direction Z and is connected to the first connecting hole 1111 so that the pump body 2 and the first connecting part 111 respectively abut against the two ends of the mounting part 32 in the third direction Z; the second connector 6 passes through the second through hole and the second mounting hole 322 in sequence along the third direction Z and is connected to the second connecting hole 1121 so that the pump body 2 and the second connecting part 112 respectively abut against the two ends of the mounting part 32 in the third direction Z. The method of connecting the pump body 2, the mounting part 32, and the first connecting part 111 using the first connector 5, the first through hole, the first mounting hole 321, and the first connecting hole 1111 has the advantage of easy installation. The method of connecting the pump body 2, the mounting part 32, and the second connecting part 112 using the second connector 6, the second through hole, the second mounting hole 322, and the second connecting hole 1121 has the advantage of easy installation. Furthermore, the method of setting the first mounting hole 321 and the second mounting hole 322 on both sides of the second opening 3011 in the first direction X can also be combined with the elasticity of the elastic sealing sleeve 3, so that the pump body 2 can cover the second opening 3011 well to seal the oil storage chamber 301.

[0052] The first connecting member 5 can be any connecting member that can be connected to the first connecting hole 1111, such as a bolt, screw, pin, etc., and there is no limitation here.

[0053] The second connector 6 can be any connector that can connect to the first connecting hole, such as a bolt, screw, pin, etc., and there is no limitation here.

[0054] In some implementations, see Figures 2-8A preferred embodiment of the present invention provides a leak-proof manual oil pump that further includes a third connector and a fourth connector.

[0055] The mounting part 32 has a third mounting hole 323 and a fourth mounting hole 324 that pass through along the third direction Z. The third mounting hole 323 is located on one side of the second opening 3011 in the second direction Y, and the fourth mounting hole 324 is located on the other side of the second opening 3011 in the second direction Y. The first direction X and the second direction Y intersect to form a first plane, and the third direction Z intersects with the first plane.

[0056] In this embodiment, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other, the first plane is a horizontal plane, and the third direction is a vertical direction.

[0057] The first opening 115 has a third connecting part 113 on one inner wall in the second direction Y, and the first opening 115 has a fourth connecting part 114 on the other inner wall in the second direction Y. The third connecting part 113 has a third connecting hole 1131 that passes through in the third direction Z and corresponds to the position of the third mounting hole 323. The fourth connecting part 114 has a fourth connecting hole 1141 that passes through in the third direction Z and corresponds to the position of the fourth mounting hole 324.

[0058] The pump body 2 has a third through hole that extends along the third direction Z and corresponds to the position of the third connecting hole 1131. The pump body 2 also has a fourth through hole that extends along the third direction Z and corresponds to the position of the fourth connecting hole 1141.

[0059] The third connector passes sequentially through the third through hole and the third mounting hole 323 along the third direction Z and connects to the third connecting hole 1131 so that the pump body 2 and the third connecting part 113 respectively abut against the two ends of the mounting part 32 along the third direction Z. The fourth connector passes sequentially through the fourth through hole and the fourth mounting hole 324 along the third direction Z and connects to the fourth connecting hole 1141 so that the pump body 2 and the fourth connecting part 114 respectively abut against the two ends of the mounting part 32 along the third direction Z. The use of the third and fourth connectors facilitates the assembly of the pump body 2, the elastic sealing sleeve 3, and the housing 1. At the same time, by setting the third and fourth connectors on both sides of the second opening 3011 in the second direction Y, they can also cooperate with the first connector 5 and the second connector 6, which are respectively set on both sides of the second opening 3011 in the first direction X, so that the pump body 2 is connected to the four sides of the second opening 3011, which is beneficial to improving the sealing performance of the pump body 2 to the oil storage chamber 301.

[0060] See Figures 6-9The outer wall of the body 31 provided in this embodiment of the invention has an inwardly recessed groove 302; the outer walls of the body 31 on both sides in the first direction X have grooves 302, the outer walls of the body 31 on both sides in the second direction Y have grooves 302, the position of the ventilation hole 12 corresponds to the position of any one of the grooves 302, the first direction X and the second direction Y intersect to form a first plane, and the third direction Z intersects with the first plane. Due to the elastic properties of the elastic sealing sleeve 3, when the pump body 2 inputs oil into the oil storage chamber 301 and expands the oil storage chamber 301 to a certain limit, the outer wall of the elastic sealing sleeve 3 will fit against the inner wall of the receiving cavity 11. However, sometimes, because the outer wall of the elastic sealing sleeve 3 fits too closely against the inner wall of the receiving cavity 11, the elastic sealing sleeve 3 will block the vent hole 12. When the oil in the oil storage chamber 301 is output through the pump body 2, the outside air is not easy to enter the receiving cavity 11 through the vent hole 12 to cause the elastic sealing sleeve 3 to contract. Therefore, by opening a groove 302 on the outer wall of the body 31 and using the method of the vent hole 12 corresponding to any groove 302, the outer wall of the elastic sealing sleeve 3 can be prevented from fitting too closely against the inner wall of the receiving cavity 11. This is beneficial for the elastic sealing sleeve 3 to contract and reduce the size of the oil storage chamber 301 when the oil is discharged through the pump body 2.

[0061] The main body 31 includes a base portion 311 and a bellows portion 312 connected to the base portion 311. A mounting portion 32 is connected to the end of the bellows portion 312 located away from the base portion 311 in the third direction Z. The bellows portion 312 has multiple peaks 3121 and multiple troughs 3122, which are alternately arranged along the third direction Z on the bellows portion 312. Using a bellows portion 312 with multiple peaks 3121 and multiple troughs 3122 facilitates the expansion and contraction of the elastic sealing sleeve 3 as it follows the oil inlet and outlet of the oil reservoir 301.

[0062] The grooves 302 are sequentially provided on the outer walls of the base portion 311 and the bellows portion 312 along the third direction Z.

[0063] In some implementations, see Figure 3 A leak-proof manual oil pump also includes a metal gasket 4, which is connected to the mounting part 32. The metal gasket 4 provides a certain rigidity to the mounting part 32, so as to facilitate the positioning between the holes provided on the housing 1, the mounting part 32 and the pump body 2, thereby facilitating the assembly of the housing 1, the elastic sealing sleeve 3 and the pump body 2.

[0064] The metal gasket 4 can be connected to the inside of the mounting part 32 or to the outside of the mounting part 32, and there is no limitation on this.

[0065] The metal gasket 4 can be made of any metal, such as iron alloy, copper alloy, or aluminum alloy, and there are no restrictions on its material.

[0066] The metal gasket 4 includes a first metal gasket, a second metal gasket, a third metal gasket, and a fourth metal gasket. The first metal gasket is located on one side of the first opening 115 in the first direction X, the second metal gasket is located on the other side of the first opening 115 in the first direction X, the third metal gasket is located on one side of the first opening 115 in the second direction Y, and the fourth metal gasket is located on the other side of the first opening 115 in the second direction Y.

[0067] In summary, the oil-leakage-proof manual oil pump provided by the embodiments of the present invention has the following beneficial effects:

[0068] 1. An elastic sealing sleeve 3 with an oil storage chamber 301 is adopted, which can keep the pressure inside the oil storage chamber 301 balanced with the external pressure by expanding or shrinking the oil storage chamber 301, so as to avoid the oil storage chamber 301 being unable to pump oil due to negative pressure.

[0069] 2. An elastic sealing sleeve 3 with an oil storage chamber 301 is adopted. The oil inlet and outlet of the oil storage chamber 301 do not require the oil storage chamber 301 to be ventilated with the outside, thereby preventing oil leakage from the oil storage chamber 301.

[0070] 3. The elastic sealing sleeve 3 with oil storage chamber 301 is adopted. There is no need to configure the air exchange plug on the pump body 2. The air exchange treatment of the receiving chamber 11 can be carried out by simply setting the air exchange hole 12 on the side wall of the housing 1.

[0071] 4. The elastic sealing sleeve 3 can automatically expand and contract during the oil inlet and outlet of the oil storage chamber 301 to play a buffering role and reduce impact.

[0072] 5. The use of a bellows section 312 with multiple peaks 3121 and multiple troughs 3122 is beneficial for the elastic sealing sleeve 3 to expand and contract with the oil inlet and outlet of the oil reservoir 301. At the same time, when the vehicle is moving and the oil pump is not running, the oil will slosh in the oil reservoir 301. The bellows expansion and contraction of the bellows section 312 can prevent the elastic sealing sleeve 3 from tearing.

[0073] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A leak-proof manual oil pump, characterized in that, include: The box body has an internal cavity, which is open at one end in the third direction to form a first opening. The side wall of the box body has a ventilation hole that passes through and communicates with the cavity. A pump body, which is connected to the housing and covers the first opening; An elastic sealing sleeve is provided in the receiving cavity, and one end of the elastic sealing sleeve facing the pump body is connected to the pump body. An oil storage cavity is opened inside the elastic sealing sleeve and is connected to the pump body. The pump body can input oil into the oil storage chamber, and the oil in the oil storage chamber can be output through the pump body; The elastic sealing sleeve includes: The main body has an oil storage chamber inside, and the oil storage chamber is open at one end facing the pump body to form a second opening; The mounting part is connected to one end of the body facing the pump body and surrounds the second opening; The main body is connected to the pump body via the mounting part, so that the pump body can cover the second opening and seal the oil storage chamber; The outer wall of the body is provided with an inwardly recessed groove; The body has grooves on both outer walls in the first direction and grooves on both outer walls in the second direction. The position of the ventilation hole corresponds to the position of any one of the grooves. The first direction and the second direction intersect to form a first plane, and the third direction intersects with the first plane.

2. The oil-proof manual oil pump according to claim 1, characterized in that, It also includes a first connector and a second connector; The mounting part has a first mounting hole and a second mounting hole that extend through the third direction. The first mounting hole is located on one side of the second opening in the first direction, and the second mounting hole is located on the other side of the second opening in the first direction. The first direction intersects with the third direction. The first opening has a first connecting part on one side of the inner wall in the first direction, and the first opening has a second connecting part on the other side of the inner wall in the first direction. The first connecting part has a first connecting hole that passes through the third direction and corresponds to the position of the first mounting hole. The second connecting part has a second connecting hole that passes through the third direction and corresponds to the position of the second mounting hole. The pump body has a first through hole that extends through the third direction and corresponds to the position of the first connecting hole, and the pump body has a second through hole that extends through the third direction and corresponds to the position of the second connecting hole; The first connector passes through the first through hole and the first mounting hole in sequence along the third direction and is connected to the first connection hole so that the pump body and the first connection part respectively abut against the mounting part at both ends of the third direction; The second connector passes through the second through hole and the second mounting hole in sequence along the third direction and is connected to the second connection hole so that the pump body and the second connector respectively abut against the mounting part at both ends of the third direction.

3. The oil-proof manual oil pump according to claim 2, characterized in that, It also includes a third connector and a fourth connector; The mounting part has a third mounting hole and a fourth mounting hole that extend through the third direction. The third mounting hole is located on one side of the second opening in the second direction, and the fourth mounting hole is located on the other side of the second opening in the second direction. The first direction and the second direction intersect to form a first plane, and the third direction intersects with the first plane. The first opening has a third connecting part on one side of its inner wall in the second direction, and the first opening has a fourth connecting part on the other side of its inner wall in the second direction. The third connecting part has a third connecting hole that passes through the third direction and corresponds to the position of the third mounting hole. The fourth connecting part has a fourth connecting hole that passes through the third direction and corresponds to the position of the fourth mounting hole. The pump body has a third through hole that extends along the third direction and corresponds to the position of the third connecting hole; the pump body also has a fourth through hole that extends along the third direction and corresponds to the position of the fourth connecting hole. The third connector passes through the third through hole and the third mounting hole in sequence along the third direction and is connected to the third connection hole so that the pump body and the third connection part respectively abut against the two ends of the mounting part along the third direction; The fourth connector passes through the fourth through hole and the fourth mounting hole in sequence along the third direction and is connected to the fourth connecting hole so that the pump body and the fourth connecting part respectively abut against the two ends of the mounting part along the third direction.

4. The oil-proof manual oil pump according to claim 1, characterized in that, It also includes a metal gasket, which is connected to the mounting portion.

5. The oil-proof manual oil pump according to any one of claims 1-4, characterized in that, The elastic sealing sleeve is made of nitrile rubber, fluororubber, or neoprene rubber.

6. The oil-proof manual oil pump according to any one of claims 1-4, characterized in that, The ventilation hole is located on the side wall of the housing at the end away from the pump body.

7. The oil-proof manual oil pump according to any one of claims 1-4, characterized in that, The body includes a base portion and a corrugated pipe portion connected to the base portion. The mounting portion is connected to the end of the corrugated pipe portion in the third direction away from the base portion. The corrugated pipe portion has multiple peaks and multiple troughs, and the multiple peaks and multiple troughs are alternately arranged on the corrugated pipe portion in the third direction.

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