Quantitative and constant-pressure air booster pump

Abstract

The utility model belongs to the field of air booster pumps, and relates to a quantitative and constant-pressure air booster pump, which comprises a cylinder body, a pressure sensor, a pressure sensor and a pressure sensor, the first power part is connected to the cylinder body; the movable end of the first power part is connected with a piston, and the outer wall of the piston is matched with the inner wall of the cavity; the base is connected to the lower end of the cylinder body; the base is provided with an air suction inlet and a pressurized air outlet, and the air suction inlet and the pressurized air outlet are respectively communicated with the cavity; and the on-off unit is connected to the base, and the cavity and the air suction inlet are communicated with or isolated from external air through the on-off unit. After the structure is adopted, the shock absorber has the beneficial effects that the piston is driven by the first power part to quickly descend, air is compressed, and the air is injected into the shock absorber through the on-off unit; quantitative compressed air supply is achieved according to the descending amount of the piston, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of booster pump, concretely relates to a kind of air booster pump of rationing constant pressure. BACKGROUND

[0002] The principle of air booster pump is to use the low air pressure of large area piston to generate high hydraulic pressure of small area piston. Air booster pump can increase the air pressure of working system to 2-5 times, only needs to use compressed air in working system as air source, as a kind of passive air booster equipment, it is widely used in the working condition that higher system pressure is needed and constant air pressure cannot be provided by factory. As passive equipment, this booster pump has the effect of energy saving and emission reduction, and meets most scenes.

[0003] But for the air charging of automobile shock absorber, a certain amount of air and constant pressure gas need to be injected, and the flow and pressure of various models of shock absorber are different, so rapid switching is needed. Traditional booster pump cannot meet the needs because its pressure ratio is determined by the area ratio of piston and cannot be changed once determined, so it is necessary to improve. UTILITY MODEL CONTENT

[0004] In order to solve the above problems of prior art, the utility model provides a kind of air booster pump of rationing constant pressure, simple structure, convenient operation.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] As an aspect of the utility model, a kind of air booster pump of rationing constant pressure is provided, comprising: cylinder body, the cavity with upper and lower ends being open is formed on the cylinder body;

[0007] First power part is connected to cylinder body;The movable end of the first power part is connected with piston, and the outer wall of the piston is matched with the inner wall of the cavity;

[0008] Base is connected to the lower end of cylinder body;Air suction inlet and pressurized gas outlet are provided on the base, and the air suction inlet and pressurized gas outlet are communicated with the cavity respectively;

[0009] On-off unit is connected to the base, and the cavity and air suction inlet are communicated with external air or isolated from external air through on-off unit.

[0010] As an option, O-ring is provided on the boss, and O-ring is located between the outer wall of boss and the inner wall of cavity.

[0011] As an option, connecting groove for O-ring installation is provided on the boss.

[0012] Optionally, a boss is formed on the base, and an outer wall of the boss is matched with an inner wall of the cavity.

[0013] Optionally, the on-off unit comprises a partitioning cylinder connected to the mounting through hole, the air suction inlet is communicated with the mounting through hole, and the mounting through hole is communicated with the cavity; the partitioning cylinder is arranged in the mounting through hole, the partitioning cylinder has a through hole, and a locking member is connected to the lower part of the partitioning cylinder and extends to the outside of the mounting through hole; one or more side through holes are arranged on the side wall of the partitioning cylinder, the side through holes are communicated with the through hole, and the air suction inlet is communicated with the through hole through the side through holes.

[0014] The air door rod is further provided, the rod part of the air door rod is arranged in the through hole in a movable mode, one end of the air door rod is provided with an air door pressing block, the air door pressing block is used for closing or opening the through hole, and the other end of the air door rod is connected to the movable end of the second power part arranged on the base.

[0015] Optionally, the matching surface between the air door pressing block and the through hole is a tapered surface.

[0016] Optionally, a gasket is arranged on the partitioning cylinder, and the gasket is arranged between the locking member and the base.

[0017] Optionally, the upper part of the partitioning cylinder is provided with a clamping part, and the clamping part is matched with a clamping groove in the mounting through hole.

[0018] Optionally, the connecting member is further provided, and the movable end of the second power part is connected to the other end of the air door rod through the connecting member.

[0019] Optionally, the connecting member comprises a connecting member body, the other end of the air door rod is detachably connected to the upper end of the connecting member body, the connecting member body is provided with a connecting clamping groove, the movable end of the second power part is provided with a connecting protrusion, and the connecting protrusion is matched with the connecting clamping groove.

[0020] The air booster pump with the functions of quantitative and constant pressure has the following advantages: the first power part drives the piston to rapidly descend, air is compressed, and the air is injected into the shock absorber through the on-off unit; the supply of the quantitative compressed air is realized according to the descending amount of the piston, and the operation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification explain the present application. The use of the same reference numbers in different drawings and / or the use of the same reference designators in the drawings and the description is intended to disclose an inconsistency in the present application.

[0022] Figure 1The utility model discloses a quantitative fixed pressure air booster pump's structure front view;

[0023] Figure 2 The utility model discloses a quantitative fixed pressure air booster pump's structure bottom view;

[0024] Figure 3 The utility model discloses a quantitative fixed pressure air booster pump's structure sectional view;

[0025] Figure 4 The utility model discloses a cylinder body, base and on-off unit's structure schematic diagram;

[0026] Figure 5 The utility model discloses a cylinder body, base and on-off unit's structure exploded view;

[0027] Figure 6 The utility model discloses a cylinder body, base and on-off unit's structure sectional view. Specific embodiment

[0028] To make the utility model's purpose, technical scheme and advantage more clear, below will combine the utility model specific embodiment and corresponding drawing to the utility model technical scheme clear, complete is described, certainly, the described embodiment is only the utility model part embodiment, is not all embodiment. Based on the embodiment in the utility model, all other embodiments that the ordinary skill in the art obtains without making creative labor are within the scope of the utility model protection.

[0029] One quantitative fixed pressure air booster pump of an embodiment of the application, as shown in Figures 1-6 It includes: cylinder body 1, the cavity 11 of open upper and lower two ends is formed on the cylinder body 1;

[0030] First power part 2 is connected to cylinder body 1, and the first power part 2 is worm gear lift, which is prior art, and will not be repeated here;The movable end of the first power part 2 is connected with the piston 21, and the outer wall of the piston 21 is matched with the inner wall of the cavity 11, and the piston 21 moves up and down in the cavity 11 under the action of the first power part 2;As an example, the first power part 2 is connected to the upper end of the cylinder body 1;The movable end of the first power part 2 is arranged downward;

[0031] Base 3 is connected to the lower end of the cylinder body 1;The boss 31 is formed on the base 3, and the outer wall of the boss 31 is matched with the inner wall of the cavity 11;The boss 31 and the piston 21 relatively seal the cavity 11;The base 3 is provided with an air suction inlet 32 and a pressurized gas outlet 33, and the air suction inlet 32 and the pressurized gas outlet 33 are communicated with the cavity 11 respectively;

[0032] The on / off unit 4 is connected to the base 3. The cavity 11 and the air intake 32 are connected to or isolated from the outside air through the on / off unit 4.

[0033] In one embodiment, such as Figure 5 As shown, the boss 31 is provided with an O-ring 5, which is located between the outer wall of the boss 31 and the inner wall of the cavity 11, and plays a sealing role; the boss 31 is provided with a connecting groove 34 for installing the O-ring 5.

[0034] In one embodiment, such as Figures 4-6 As shown, the switching unit 4 includes a partition cylinder 41 connected to the mounting through hole 35 of the base 3, with the mounting through hole 35 penetrating the boss 31; the air intake 32 is connected to the mounting through hole 35, which is connected to the cavity 11, allowing outside air to enter the mounting through hole 35 from the air intake 32 and then into the cavity 11; the partition cylinder 41 is inserted into the mounting through hole 35, has a through hole 411, and a locking part 42 is formed on the upper part of the partition cylinder 41. The locking part 42 is an annular protrusion, which cooperates with the slot 351 in the mounting through hole 35 to limit the position of the partition cylinder 41; the lower part of the partition cylinder 41 extends to the outer side of the mounting through hole 35 and is threadedly connected to a locking member 43, which is a locking nut; the side wall of the partition cylinder 41 is provided with one or more side through holes 412, which are connected to the through through hole 411, and the air intake 32 is connected to the through through hole 411 through the side through hole 412, serving as a channel for air to enter the inner cavity 11;

[0035] It also includes a damper rod 44, the rod portion of which movably passes through the through hole 411; one end of the damper rod 44 has a damper block 441, which closes or opens the through hole 411; the mating surface between the damper block 441 and the through hole 411 is a conical surface, ensuring airtightness in the closed state; the other end of the damper rod 44 extends to the outer end of the through hole 411 and connects to the movable end of the second power unit 45 provided on the base 3. The cylinder or motor of the power unit 45 is existing technology and will not be described in detail. By extending or retracting the movable end of the second power unit 45, the damper rod 44 is driven to move into or away from the cavity 11. When the damper rod 44 moves into the cavity 11, the through hole 411 is open, and outside air can enter the cavity 11. When the damper rod 44 moves away from the cavity 11, the damper block 441 blocks the through hole 411, thus separating the air intake 32 from the cavity 11.

[0036] In one embodiment, such as Figures 5-6As shown, in order to make the locking effect between the locking piece 43 and the base 3 better, the spacer cylinder 41 is sleeved with a gasket 47 between the locking piece 43 and the base 3.

[0037] In an embodiment, as Figures 5-6 As shown, the second power part 45 is connected with the other end of the damper rod 44 through a connecting piece 46, which facilitates the connection between the damper rod 44 and the second power part 45.

[0038] Specifically, as Figure 5 As shown, the connecting piece 46 includes a connecting piece body 461, the other end of the damper rod 44 is detachably connected with the upper end of the connecting piece body 461, the connecting piece body 461 is formed with a connecting clamping groove 462, and the movable end of the second power part 45 is provided with a connecting protrusion matched with the connecting clamping groove 462 to realize the connection between the two.

[0039] Before use, the pressurized air outlet 33 is connected with the inflation port of the shock absorber, the movable end of the first power part 2 is located in the cavity 11, and the cavity 11 has already sucked in air from the air suction port 32. Before operation, the movable end of the second power part 45 retreats, and the damper rod 44 is in a closed state. Then, the movable end of the first power part 2 is pressed at high speed to compress the gas in the cavity 11. The amount of descent of the control piston 21 can control the air pressure in the shock absorber, which is simple and convenient.

[0040] It is to be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0041] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of providing an understanding of the example embodiments. Technical, methods, and apparatuses known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as if the discussion were incorporated herein. In all examples shown and discussed herein, any specific values are to be interpreted as illustrative only and not as a limitation. Thus, other example embodiments of the example embodiments can have different values. It is to be noted that like numbers and letters refer to like elements throughout the several views of the drawings and that, unless the context clearly dictates otherwise, singular values are intended to include plural values.

[0042] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, unless otherwise stated, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0044] In addition, it should be noted that the use of the words "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore cannot be understood as a limitation on the scope of protection of the present application.

[0045] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "provided with", "connected" and the like should be understood in a broad sense, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The above is only the preferred embodiment of the present application, and any changes and modifications made within the scope of the present application should be included in the scope of the present application.

Claims

1. A constant volume and pressure air booster pump, characterized by, It includes: cylinder , the cavity is formed with open upper and lower ends; First power unit, connected to the cylinder; the first power unit is connected to the movable end of the piston, the outer wall of the piston is matched with the inner wall of the cavity; Base connected to the lower end of the cylinder; the base is provided with air suction inlet and pressurized air outlet, the air suction inlet and pressurized air outlet are communicated with the cavity respectively; On-off unit, the on-off unit is connected to the base, the cavity and the air suction inlet are communicated with the outside air or isolated through the on-off unit.

2. The constant pressure air booster pump of claim 1, wherein, The base is formed with a boss, the outer wall of the boss is matched with the inner wall of the cavity.

3. The constant volume air booster pump of claim 2, wherein, The boss is provided with an O-shaped ring, which is located between the outer wall of the boss and the inner wall of the cavity.

4. The constant delivery constant pressure air booster pump of claim 3, wherein, The boss is provided with a connecting groove for mounting the O-shaped ring.

5. The constant volume, constant pressure air booster pump of claim 1, wherein, The on-off unit includes a partition cylinder connected to the mounting hole of the base, the air suction inlet is communicated with the mounting hole, and the mounting hole is communicated with the cavity; the partition cylinder is arranged in the mounting hole, the partition cylinder has a through hole, the lower part of the partition cylinder extends to the outside of the mounting hole and is connected with a locking piece; the side wall of the partition cylinder is provided with more than one side through hole, the side through hole is communicated with the through hole, and the air suction inlet is communicated with the through hole through the side through hole; It also includes a damper rod, the rod of the damper rod is movably arranged in the through hole; one end of the damper rod has a damper pressing block, which closes or opens the through hole; the other end of the damper rod extends to the outer end of the through hole and is connected with the movable end of the second power unit arranged on the base.

6. The fixed displacement constant pressure air booster pump of claim 5, wherein, The matching surface between the damper pressing block and the through hole is a tapered surface.

7. The fixed displacement constant pressure air booster pump of claim 5, wherein, The partition cylinder is sleeved with a gasket, which is located between the locking piece and the base.

8. The fixed displacement constant pressure air booster pump of claim 5, wherein, The upper part of the partition cylinder is formed with a clamping part, which is matched with the clamping groove in the mounting hole.

9. The fixed displacement constant pressure air booster pump of claim 5, wherein, It also includes a connecting piece, the movable end of the second power unit is connected with the other end of the damper rod through the connecting piece.

10. The fixed displacement constant pressure air booster pump of claim 9, wherein, The connecting piece includes a connecting piece body, the other end of the damper rod is detachably connected with the upper end of the connecting piece body, the connecting piece body is formed with a connecting clamping groove, the movable end of the second power unit is provided with a connecting protrusion, and the connecting protrusion is matched with the connecting clamping groove.

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