Ventilation plug structure and hydraulic lifting oil pump

Abstract

The utility model relates to a ventilation plug structure and a hydraulic lifting oil pump, the ventilation plug structure comprises a pneumatic quick-plug connector and an oil pipe, the pneumatic quick-plug connector is used for being installed in an oil adding hole of the oil pump, and the pneumatic quick-plug connector comprises an installation hole penetrating in the vertical direction; the oil pipe is mounted in the mounting hole, the oil pipe comprises a mounting pipe and a stretching-in pipe which both extend in the vertical direction, the mounting pipe is mounted in the mounting hole, the lower end of the mounting pipe is provided with an exhaust hole in a penetrating mode, the exhaust hole and the stretching-in pipe are arranged at an interval, the stretching-in pipe is connected to the lower end of the mounting pipe and arranged at an interval with the through hole, and the outer diameter of the stretching-in pipe is smaller than that of the mounting pipe; the exhaust hole enables the inner cavity of the oil pump to be communicated with the external environment, no extra structure is needed for exhausting, sucking and discharging oil, the oil pipe can be rapidly pulled out to add oil to the oil pump directly through cooperation of the oil pipe, the pneumatic rapid insertion machine head and the oil pipe, or the oil pump can operate normally through rapid installation. Cost is low and operation is simple.

Description

Technical Field

[0001] The utility model relates to the field of vent plugs, in particular to a vent plug structure and a hydraulic lifting oil pump. Background Art

[0002] The vent plug of the oil pump is mostly made of carbon steel material, which needs to take into account the functions of suction, exhaust and refueling; the existing oil pump usually uses a vent plug containing a spring and a steel ball, which has a complex structure, and the entire vent plug must be unscrewed when refueling, which is troublesome to operate. Utility Model Content

[0003] Based on the above description, the utility model provides a vent plug and a hydraulic lifting oil pump to solve the problems of the complex structure of the vent plug of the existing oil pump and the troublesome refueling operation.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A vent plug structure, comprising:

[0006] A pneumatic quick-connect connector, used to be installed in the oil filling hole of the oil pump, the pneumatic quick-connect connector includes a mounting hole that penetrates in the up-down direction; and,

[0007] An oil pipe is installed in the mounting hole, and the oil pipe includes a mounting pipe and an insertion pipe both extending in the up-down direction. The mounting pipe is installed in the mounting hole, and a vent hole for connecting the inner cavity of the oil pump and the oil pipe is penetrated at the lower end of the mounting pipe. The insertion pipe is connected to the lower end of the mounting pipe and is spaced apart from the vent hole, and the outer diameter of the insertion pipe is smaller than the outer diameter of the mounting pipe.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows:

[0009] Further, the pneumatic quick-connect connector includes:

[0010] The joint body is provided with a joint hole extending up and down;

[0011] a retaining ring installed in the joint hole; and

[0012] A release ring is movably mounted on the mounting hole in an up-and-down direction so as to release the retaining spring when moving downward;

[0013] The mounting hole is formed in the joint hole.

[0014] Furthermore, the vent plug structure also includes a pressure cover, which is provided with a through hole extending in the up-down direction and covers the upper end of the release ring, and the pressure cover protrudes from the release ring in the radial direction of the release ring.

[0015] Furthermore, the mounting tube comprises:

[0016] A mounting section adapted to fit into the mounting hole; and

[0017] A connecting section connected to the lower end of the mounting section, wherein the connecting section is tapered from top to bottom, and the lower end of the connecting section is connected to the upper end of the insertion tube;

[0018] The exhaust hole is arranged in the connecting section or the connecting section and the insertion pipe are connected therewith.

[0019] Furthermore, the outer surface of the insertion tube is provided with a plurality of scale lines spaced apart in the vertical direction.

[0020] Furthermore, the oil pipe also includes an exhaust pipe, which is connected to the upper end of the mounting pipe and extends in a horizontal direction.

[0021] Furthermore, the oil pipe is configured as a plastic oil pipe.

[0022] The utility model also provides a hydraulic lifting oil pump, comprising the above-mentioned vent plug structure.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0024] The pneumatic quick-connect connector is installed in the oil filling hole of the oil pump, and the oil pipe is installed in the mounting hole. Due to the characteristics of the pneumatic quick-connect connector, the oil pipe can be stably installed in the mounting hole and can also be removed from the mounting hole, and the outer diameter of the penetration tube is smaller than the outer diameter of the mounting tube, so that the oil pipe can be easily pulled out of the mounting hole to add oil into the oil pump through the mounting hole; the exhaust hole connects the inner cavity of the oil pump with the external environment through the oil pipe, and the oil pump directly exhausts, inhales and discharges oil through the oil pipe; the structure is simple, the cost is low, and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the structure of a vent plug provided in an embodiment of the utility model;

[0026] Figure 2 for Figure 1 A front view schematic diagram of

[0027] Figure 3 for Figure 2 Schematic cross-sectional view along AA (circlip not shown);

[0028] Figure 4 A schematic diagram of the explosion structure of a vent plug provided in an embodiment of the utility model;

[0029] Figure 5 for Figure 4 A perspective structural diagram of the invention (the retaining spring is not shown).

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Pneumatic quick-connect connector; 11. Connector body; 12. Release ring; 121. Mounting hole; 2. Oil pipe; 21. Mounting pipe; 211. Mounting section; 212. Connecting section; 22. Insert pipe; 23. Exhaust pipe; 3. Exhaust hole; 4. Pressure cap. DETAILED DESCRIPTION

[0032] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0034] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0035] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0036] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0037] Reference Figures 1 to 3 The utility model provides a vent plug structure, comprising:

[0038] A pneumatic quick-connect connector 1 is used to be installed in the oil filling hole of the oil pump, and the pneumatic quick-connect connector includes a mounting hole 121 that penetrates in the vertical direction; and

[0039] The oil pipe 2 is installed in the mounting hole 121. The oil pipe 2 includes a mounting pipe 21 and an insertion pipe 22 both extending in the up and down directions. The mounting pipe 21 is installed in the mounting hole 121. The lower end of the mounting pipe 21 is penetrated by an exhaust hole 3 for connecting the inner cavity of the oil pump and the oil pipe 2. The insertion pipe 22 is connected to the lower end of the mounting pipe 21 and is spaced apart from the through hole. The outer diameter of the insertion pipe 22 is smaller than the outer diameter of the mounting pipe 21.

[0040] The pneumatic quick-connect connector is installed in the oil filling hole of the oil pump, and the oil pipe 2 is installed in the mounting hole 121. Due to the characteristics of the pneumatic quick-connect connector, the oil pipe 2 can be firmly installed in the mounting hole 121 and can also be removed from the mounting hole 121, and the outer diameter of the penetration tube is smaller than the outer diameter of the mounting pipe 21, so that the oil pipe 2 can be easily pulled out from the mounting hole 121 to refuel into the oil pump through the mounting hole 121; the exhaust hole 3 connects the inner cavity of the oil pump with the external environment through the oil pipe 2, and the oil pump directly exhausts, inhales and discharges oil through the oil pipe 2; the structure is simple, the cost is low, and the operation is simple.

[0041] Specifically, in this embodiment, refer to Figures 3 to 5The mounting tube 21 includes a mounting section 211 and a connecting section 212. The mounting section 211 is adapted to fit the mounting hole 121. The connecting section 212 is connected to the lower end of the mounting section 211. The connecting section 212 is reduced from top to bottom, and the lower end of the connecting section 212 is connected to the upper end of the insertion tube 22. The diameter of the exhaust hole is set to d. The exhaust hole 3 is set at the connecting section 212 or at the connection between the connecting section 212 and the insertion tube 22. The connecting section 212 is reduced from top to bottom, so that there is a gap between the exhaust hole 3 and the hole wall of the mounting hole 121, so that the inner cavity of the oil pump is connected to the external environment. In this way, it is ensured that the oil pump can always be connected to the external environment to ensure working efficiency.

[0042] In one embodiment, the mounting tube 21 is directly connected to the insertion tube 22, and the diameter of the mounting tube 21 is larger than the diameter of the insertion tube 22. The mounting tube 21 includes a tube body extending in the up and down directions, and a connecting ring connected to the lower end of the tube body. The outer diameter of the connecting ring is adapted to the outer diameter of the tube body, and the inner diameter of the connecting ring is adapted to the outer diameter of the insertion tube 22, so that the mounting tube 21 can be connected to the insertion tube 22, and the exhaust hole 3 is provided on the connecting ring.

[0043] Specifically, refer to Figure 4 and Figure 5 The pneumatic quick-connect connector includes a connector body 11, a retaining ring and a release ring 12. The connector body 11 is provided with a connector hole extending up and down; the retaining ring is installed in the connector hole; the release ring 12 is movably installed in the mounting hole 121 along the up and down direction to release the retaining ring when moving downward; the mounting hole 121 is formed in the connector hole. In this embodiment, the mounting hole 121 is formed in the release ring 12, and the oil pipe 2 is inserted into the mounting hole 121 from top to bottom, and the retaining spring clamps the oil pipe 2, so that the oil pipe 2 is firmly mounted on the pneumatic quick-connect connector; when oil needs to be added, the release ring 12 is pressed downward so that the release ring 12 moves downward to drive the retaining spring to release, thereby releasing the clamping of the oil pipe 2, and the oil pipe 2 is manually pulled upward to pull out the oil pipe 2; in this way, the existing pneumatic quick plug and the oil pipe 2 are used in combination to replace the complex structure of the spring and steel ball of the original vent plug, which is easy to process and manufacture, and greatly saves costs.

[0044] It should be noted that the pneumatic quick-connect connector is an existing pneumatic quick-connect connector and will not be described in detail here.

[0045] More specifically, refer to Figures 3 to 5The vent plug structure also includes a pressure cover 4, which is provided with a through hole extending in the up-down direction and covers the upper end of the release ring 12. On the one hand, the pressure cover 4 protrudes from the release ring 12 along the radial direction of the release ring 12, thereby increasing the contact area between the operator's hand and the release ring 12 and increasing the operator's operating comfort; on the other hand, it can block the gap between the release ring 12 and the mounting hole 121 to prevent impurities from entering and contaminating the oil in the oil pump.

[0046] In this embodiment, refer to Figure 2 , Figure 4 and Figure 5 The oil pipe 2 also includes an exhaust pipe 23, which is connected to the upper end of the mounting section 211 and extends in a horizontal direction, so as to facilitate exhaust, air intake or oil discharge and prevent impurities in the air from entering the oil pipe 2 from the end of the exhaust pipe 23.

[0047] In this embodiment, the oil pipe 2 is configured as a plastic oil pipe 2 , which has low cost, strong structure, stable properties, and the plastic oil pipe 2 has certain deformation properties, making it more convenient to plug and unplug the oil pipe 2 .

[0048] In order to know the height of the oil in the oil pump, in this embodiment, the outer surface of the insertion tube 22 is provided with a plurality of scale lines spaced apart in the vertical direction, so that the height of the oil in the oil pump can be known by the number of scale lines immersed in the oil.

[0049] The utility model also proposes a hydraulic lifting oil pump, including the vent plug structure. The hydraulic lifting oil pump includes all the technical features of the vent plug structure, which will not be described in detail here.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vent plug structure, characterized in that: include: A pneumatic quick-connect connector, used to be installed in the oil filling hole of the oil pump, the pneumatic quick-connect connector includes a mounting hole that penetrates in the up-down direction; and, An oil pipe is installed in the mounting hole, and the oil pipe includes a mounting pipe and an insertion pipe both extending in the up-down direction. The mounting pipe is installed in the mounting hole, and a vent hole for connecting the inner cavity of the oil pump and the oil pipe is penetrated at the lower end of the mounting pipe. The insertion pipe is connected to the lower end of the mounting pipe and is spaced apart from the vent hole, and the outer diameter of the insertion pipe is smaller than the outer diameter of the mounting pipe.

2. The vent plug structure according to claim 1, characterized in that: The pneumatic quick-connect connector comprises: The joint body is provided with a joint hole extending up and down; a retaining ring installed in the joint hole; and A release ring is movably mounted on the mounting hole in an up-and-down direction so as to release the retaining spring when moving downward; The mounting hole is formed in the joint hole.

3. The vent plug structure according to claim 2, characterized in that: The vent plug structure also includes a pressure cover, which is provided with a through hole extending in the up-down direction and covers the upper end of the release ring. The pressure cover protrudes from the release ring in the radial direction of the release ring.

4. The vent plug structure according to claim 1, characterized in that: The mounting tube comprises: A mounting section adapted to fit into the mounting hole; and A connecting section connected to the lower end of the mounting section, wherein the connecting section is tapered from top to bottom, and the lower end of the connecting section is connected to the upper end of the insertion tube; The exhaust hole is arranged in the connecting section or the connecting section and the insertion pipe are connected therewith.

5. The vent plug structure according to claim 1, characterized in that: The outer surface of the insertion tube is provided with a plurality of scale lines spaced apart in the vertical direction.

6. The vent plug structure according to claim 1, characterized in that: The oil pipe also includes an exhaust pipe, which is connected to the upper end of the mounting pipe and extends in a horizontal direction.

7. The vent plug structure according to claim 1, characterized in that: The oil pipe is configured as a plastic oil pipe.

8. A hydraulic lifting oil pump, characterized in that: It comprises the vent plug structure as described in any one of claims 1 to 7.

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