High-pressure micro piston air pump

Abstract

The utility model provides a high-pressure miniature piston air pump which comprises a pump head and a pump body, an air cylinder is arranged at one end of the pump body, and the pump head is arranged at the end, away from the pump body, of the air cylinder. A valve element assembly is arranged on the pump head, an air inlet channel and an exhaust channel arranged on the pump head are communicated with one side of the valve element assembly, the other side of the valve element assembly is communicated with the air cylinder, and a piston assembly arranged on the pump body extends into the air cylinder. The valve element assembly comprises an upper valve plate, a valve plate and a lower valve plate, an upper air hole and a lower air hole are formed in the valve plate, and a swing arm elastic piece arranged on the upper valve plate and a swing arm elastic piece arranged on the lower valve plate are attached to the upper air hole and the lower air hole respectively. In the air suction and exhaust process, the upper valve plate and the lower valve plate interact with the valve plate to achieve air compression, high pressure can be achieved while the large flow is kept, the air suction and exhaust path and the corresponding structure are simplified, the overall size of equipment is reduced, and the equipment is convenient to carry.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pressure air pump technical field especially relates to a high pressure micro piston air pump. BACKGROUND

[0002] The air pump is mainly used for adding air to a closed space, and is usually used as a compressed air source for automatic small machinery to drive a cylinder to complete an action instruction. The air pump can also be used as a portable air pump for outdoor use, and can be used for laboratory high-pressure testing to provide high-pressure gas.

[0003] Most of the existing piston air pumps have a large volume and a low limit positive pressure. In addition, the air inlet and outlet channels need to be provided with a one-way valve and other devices, which further increases the volume of the equipment and is not conducive to carrying the equipment. The air pressure value cannot meet the high-pressure requirements of some scenes when the air is compressed. UTILITY MODEL CONTENTS

[0004] The utility model provides a high pressure micro piston air pump, aims at solving the problems of the current piston air pump equipment, which has a large volume, is not conducive to carrying the equipment, and the air pressure value cannot meet the high-pressure requirements of some scenes when the air is compressed.

[0005] The utility model is implemented as follows: a high pressure micro piston air pump comprises:

[0006] A pump head and a pump body are provided, one end of the pump body is provided with a cylinder, and the pump head is arranged at the end of the cylinder away from the pump body;

[0007] A valve core assembly is arranged on the pump head, an air inlet channel and an air outlet channel arranged on the pump head are in communication with one side of the valve core assembly, the other side of the valve core assembly is in communication with the cylinder, and a piston assembly arranged on the pump body extends into the cylinder;

[0008] The valve core assembly comprises an upper valve plate, a valve plate and a lower valve plate, the valve plate is provided with an upper air hole and a lower air hole, the upper valve plate and the lower valve plate are respectively provided with swing arm elastic sheets, and the swing arm elastic sheet arranged on the upper valve plate and the swing arm elastic sheet arranged on the lower valve plate are respectively attached to the lower air hole and the upper air hole.

[0009] Preferably, the upper valve plate is arranged on the valve plate close to the pump head, and the lower valve plate is arranged on the valve plate close to the pump body.

[0010] Preferably, an air inlet is arranged on the upper valve plate, the position of the air inlet corresponds to the position of the upper air hole, and the position of the swing arm elastic sheet arranged on the upper valve plate corresponds to the position of the lower air hole.

[0011] Preferably, an air outlet is arranged on the lower valve plate, the position of the air outlet corresponds to the position of the lower air hole, and the position of the swing arm elastic sheet arranged on the lower valve plate corresponds to the position of the upper air hole.

[0012] Preferably, one side of the pump body is provided with an annular port, the cylinder is arranged at the annular port, the cylinder is provided with a sealing rubber ring away from the end face of the pump body, and the pump head is connected with the plane of the pump body provided with the annular port through screw connection, and the cylinder is sealingly connected with the valve core assembly through the sealing rubber ring.

[0013] Preferably, the piston assembly comprises a piston screw, an upper circular cover, a piston ring and a lower circular cover, the upper circular cover and the lower circular cover are arranged on the two sides of the piston ring, and the outer edge of the piston ring abuts against the inner wall of the cylinder.

[0014] Preferably, the high-pressure micro piston air pump further comprises a crankshaft driving structure, the crankshaft driving structure comprises a transmission mechanism arranged in the interior of the pump body and a driving motor, the motor shaft of the driving motor extends into the interior of the pump body from the outer side of the pump body and is connected with the transmission mechanism, and the transmission mechanism is connected with the piston screw.

[0015] Preferably, the transmission mechanism comprises a crankshaft, a bearing and a connecting rod, the connecting rod is connected with the crankshaft through the bearing, the bearing is nested on the outer edge of the crankshaft, the crankshaft is provided with an eccentric shaft hole, the motor shaft of the driving motor is assembled in the eccentric shaft hole, and the connecting rod is connected with the piston screw.

[0016] Preferably, the crankshaft is provided with a positioning screw and a damping block, and the damping block is assembled on the crankshaft through the positioning screw.

[0017] Preferably, the pump head is provided with strip-shaped heat dissipation grooves.

[0018] Compared with the prior art, the embodiment of the application has the following beneficial effects:

[0019] The high-pressure micro piston air pump provided by the utility model has the upper valve plate and the lower valve plate, the swing arm elastic sheets arranged on the upper valve plate and the lower valve plate are respectively attached to the upper air hole and the lower air hole, the upper valve plate and the lower valve plate interact with the valve plate to realize gas compression during the processes of air suction and air exhaust, relatively high pressure can be achieved while maintaining relatively large flow, the air suction and air exhaust path and the corresponding structure are simplified, the overall volume of the equipment is reduced, and the equipment is convenient to carry. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structural schematic view of a high-pressure micro piston air pump provided by the utility model.

[0021] Figure 2 is an exploded structural schematic view of a high-pressure micro piston air pump provided by the utility model.

[0022] Figure 3It is the pump body and pump head structural schematic diagram of a high-pressure micro piston air pump provided by the utility model.

[0023] Figure 4 It is the structure schematic diagram inside the pump body of a high-pressure micro piston air pump provided by the utility model.

[0024] Figure 5 It is the top view structure schematic diagram of a high-pressure micro piston air pump provided by the utility model.

[0025] Figure 6 It is the A-A plane structure schematic diagram of a high-pressure micro piston air pump provided by the utility model.

[0026] Figure 7 It is the valve core assembly and air cylinder internal structure schematic diagram of a high-pressure micro piston air pump provided by the utility model.

[0027] Figure 8 It is the valve core assembly structure schematic diagram of a high-pressure micro piston air pump provided by the utility model.

[0028] Mark explanation:

[0029] 1, pump head screw; 2, pump head; 201, air inlet passage; 202, exhaust passage; 3, sealing gasket; 4, upper valve plate; 5, valve plate; 501, upper air hole; 502, lower air hole; 6, lower valve plate; 7, piston screw; 8, upper round cover; 9, piston ring; 10, lower round cover; 11, sealing rubber ring; 12, air cylinder; 13, left side cover; 14, right side cover; 15, pump body; 16, shock absorbing block; 17, positioning screw; 18, crankshaft; 19, bearing; 20, connecting rod; 21, driving motor. Specific implementation

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the description and claims of this application as well as the above abstract are intended to cover all alternatives, modifications, and equivalents thereof in accordance with the scope of the application as claimed. The terms "comprising", "having", "including", and "containing" used herein are meant to be interpreted in a non-limiting manner.

[0031] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0032] The utility model embodiment provides a kind of high pressure micro piston air pump, as shown in Figures 1-8 The utility model provides a kind of high pressure micro piston air pump, as shown in

[0033] Pump head 2 and pump body 15, one end of the pump body 15 is equipped with cylinder 12, the pump head 2 is arranged at the one end of cylinder 12 away from pump body 15;

[0034] The pump head 2 is flat structure and is equipped with valve core assembly on the side close to pump body 15, the valve core assembly includes upper valve sheet 4, valve plate 5 and lower valve sheet 6, the valve plate 5 is equipped with upper air hole 501 and lower air hole 502, the upper valve sheet 4 and lower valve sheet 6 are equipped with swing arm spring piece respectively, the swing arm spring piece equipped on the upper valve sheet 4 and the swing arm spring piece equipped on the lower valve sheet 6 are respectively pasted to lower air hole 502 and upper air hole 501;Upper valve sheet 4 and lower valve sheet 6 are also equipped with air inlet and air outlet respectively, the position of air inlet and air outlet also respectively corresponds with the position of lower air hole 502 and upper air hole 501;

[0035] The pump head 2 is equipped with air inlet channel 201 and air outlet channel 202 and is communicated with one side of valve core assembly, the other side of valve core assembly is communicated with cylinder 12, external airflow passes through air inlet channel 201 and upper air hole 501 to the other side of valve core assembly, and then is discharged to outside airflow by lower air hole 502 and air outlet channel 202.Driving force in this process is generated by piston assembly constituting high pressure micro piston air pump and crankshaft driving structure driving piston assembly movement, here the piston assembly extends to cylinder 12 from the pump body 15;The crankshaft driving structure includes transmission mechanism in the interior of pump body 15 and driving motor 21, the motor shaft of driving motor 21 extends into the interior of pump body 15 from the outside of pump body 15 and is connected with transmission mechanism, the transmission mechanism is connected with piston assembly;

[0036] When the piston assembly is away from the valve plate 5, the external airflow enters the pump head 2 from the air inlet channel 201 and passes through the valve plate 5 along the air inlet of the upper valve plate 4 and the upper air hole 501 on the valve plate 5, and the swing arm spring on the upper valve plate 4 is attached to the side away from the pump body 15 of the lower air hole 502 and seals the lower air hole 502 to prevent the external airflow from entering the cylinder 12 from the air outlet channel 202. When the piston assembly is close to the valve plate 5, the swing arm spring on the lower valve plate 6 is attached to the upper air hole 501, and at this time the external airflow entering the cylinder 12 can only pass through the air outlet on the lower valve plate 6, the lower air hole 502 and the swing arm spring on the upper valve plate 4 in turn, and then exit the valve plate 5 to be discharged. The above operation is repeated to complete the air intake and exhaust process, thereby reducing the noise of the one-way valve.

[0037] In this embodiment, the upper valve plate 4 and the lower valve plate 6 interact with the valve plate 5 during the air intake and exhaust processes to achieve gas compression. The valve plate 5 can be directly contacted with the outside, has excellent heat dissipation during continuous operation, and greatly improves the service life of the air pump.

[0038] As a preferred embodiment in this embodiment, the pump head 2 is provided with a pump head screw 1; the pump head 2 is connected with the pump body 15 through the pump head screw 1, the upper valve plate 4, the valve plate 5 and the lower valve plate 6 are all provided with screw holes for accommodating the pump head screw 1, and the upper valve plate 4 is further provided with a sealing gasket 3 between the pump head 2 for sealing the valve plate 5. When the pump head screw 1 is fixed to the pump body 15, the cylinder 12 is abutted on the valve core assembly.

[0039] The pump head 2 is provided with a strip-shaped heat dissipation groove for cooling the pump head 2, the air inlet channel 201 and the air outlet channel 202 are independent of each other and not directly connected, the air inlet channel 201 and the air outlet channel 202 are both designed in right angles, and the inner walls of the air inlet channel 201 and the air outlet channel 202 are further provided with screw threads for connecting pipelines, thereby facilitating the connection of external pipelines.

[0040] In this embodiment, the pump body 15 is provided with an annular port, the cylinder 12 is arranged at the annular port, the end surface of the cylinder 12 away from the pump body 15 is provided with a sealing rubber ring 11, and the plane of the pump body 15 provided with the annular port is provided with a screw hole for accommodating the pump head screw 1. When the pump head 2 is connected with the pump body 15 through the pump head screw 1, the cylinder 12 is sealingly connected with the valve core assembly through the sealing rubber ring 11.

[0041] As a preferred embodiment in the present embodiment, the piston assembly comprises a piston screw 7, an upper circular cover 8, a piston ring 9 and a lower circular cover 10, the upper circular cover 8 and the lower circular cover 10 are arranged on both sides of the piston ring 9, the piston screw 7 is assembled on the connecting rod 20 through the upper circular cover 8 and the lower circular cover 10, and the outer edge of the piston ring 9 abuts against the inner wall of the cylinder 12;

[0042] The high-pressure micro-piston air pump further comprises a crankshaft driving structure, the crankshaft driving structure comprises a transmission mechanism arranged in the pump body 15 and a driving motor 21, the motor shaft of the driving motor 21 extends into the pump body 15 from the outside of the pump body 15 and is connected with the transmission mechanism, the transmission mechanism is connected with the piston ring 9, the transmission mechanism comprises a crankshaft 18, a bearing 19 and a connecting rod 20, the connecting rod 20 is connected with the crankshaft 18 through the bearing 19, the bearing 19 is nested on the outer edge of the crankshaft 18, the crankshaft 18 is provided with an eccentric shaft hole, the motor shaft of the driving motor 21 is assembled in the eccentric shaft hole, the connecting rod 20 is connected with the piston screw 7, and the piston ring 9 is nested on the outside of the upper circular cover 8 and the lower circular cover 10; the piston ring 9 moves along the cylinder 12 under the movement of the upper circular cover 8 and the lower circular cover 10;

[0043] Here, the upper circular cover 8 and the lower circular cover 10 are moved by the connecting rod 20 and the piston screw 7, although the upper circular cover 8 and the lower circular cover 10 will make irregular deflection movement, the diameter of the upper circular cover 8 and the lower circular cover 10 is much smaller than the inner wall of the cylinder 12, and the piston ring 9 meets the sealing requirement in the movement process through active deformation, the movement stroke of the crankshaft driving structure in the present application is short, and the deflection movement of the connecting rod 20, the upper circular cover 8 and the lower circular cover 10 can be met through the deformation of the piston ring 9;

[0044] In the present embodiment, the cylinder 12 is made of metal, a special clamping groove for a sealing ring is arranged at the top of the cylinder 12 to provide reliable sealing for compressed gas, and a high-hardness smooth coating is arranged on the inner wall to reduce the working friction, so that the overall power consumption of the equipment is reduced;

[0045] In the present embodiment, the pump body 15 is further provided with a left side cover 13 and a right side cover 14, the left side cover 13 and the right side cover 14 are fixed on the pump body 15 through bolts, mainly for facilitating the maintenance of the equipment in the pump body 15, the pump body 15 is further provided with a motor shaft hole, the driving motor 21 is connected to the side wall of the pump body 15 provided with the motor shaft hole, and the motor shaft of the driving motor 21 extends into the pump body 15 through the motor shaft hole;

[0046] In the present embodiment, the motor shaft of the driving motor 21 is perpendicular to the movement direction of the piston assembly; and a right-angle structure design is adopted to further reduce the structure volume of the transmission part.

[0047] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations, but those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other order or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0048] The above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the protection scope of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add or delete or make other adjustments to the features in each embodiment of the present application according to the circumstances without creative labor, so as to obtain different other technical solutions which do not deviate from the concept of the present application in essence. These technical solutions also belong to the scope of protection of the present application.

Claims

1. A high pressure micro-piston gas pump characterized in that, The utility model relates to a high pressure micro piston air pump, including: Pump head and pump body, one end of pump body is equipped with cylinder, pump head sets up in cylinder far away from one end of pump body, Pump head is equipped with valve core subassembly, and the air inlet channel and exhaust passage that pump head is equipped with one side intercommunication with valve core subassembly, the other side of valve core subassembly and cylinder intercommunication, and the piston assembly that pump body is equipped with extends to cylinder, Valve core subassembly includes upper valve sheet, valve plate and lower valve sheet, and the upper air hole and lower air hole are equipped on valve plate, and the swing arm spring piece is equipped on upper valve sheet and lower valve sheet respectively, and the swing arm spring piece that upper valve sheet is equipped and the swing arm spring piece that lower valve sheet is equipped respectively stick to lower air hole and upper air hole.

2. A high pressure micro-piston gas pump as claimed in claim 1, characterized in that, Upper valve sheet sets up in valve plate close to pump head side, and lower valve sheet sets up in valve plate close to pump body side.

3. A high pressure micro-piston gas pump as claimed in claim 2, characterized in that Upper valve sheet is equipped with air inlet, and the position of air inlet corresponds with the position of upper air hole, and the position of swing arm spring piece that upper valve sheet is equipped corresponds with lower air hole position.

4. A high pressure micro-piston gas pump as claimed in claim 3, characterized in that Lower valve sheet is equipped with exhaust port, and the position of exhaust port corresponds with lower air hole position, and the position of swing arm spring piece that lower valve sheet is equipped corresponds with upper air hole position.

5. A high pressure micro-piston gas pump as claimed in claim 1, wherein, One side of pump body is equipped with annular port, and cylinder sets up at annular port, and the end face of cylinder far away from pump body is equipped with sealing rubber ring, and the plane of pump head and pump body setting annular port is connected through screw thread, and cylinder is sealedly connected with valve core subassembly through sealing rubber ring.

6. A high pressure micro-piston gas pump as claimed in claim 1, wherein, Piston assembly includes piston screw, upper round cover, piston ring and lower round cover, and upper round cover and lower round cover are separately arranged on both sides of piston ring, and the outer edge of piston ring abuts on the inner wall of cylinder.

7. A high pressure micro-piston gas pump as claimed in claim 6, characterized in that The high pressure micro piston air pump further includes a crankshaft driving structure, the crankshaft driving structure includes a transmission mechanism arranged in the interior of the pump body and a driving motor, a motor shaft of the driving motor extends into the interior of the pump body from the exterior of the pump body and is connected with the transmission mechanism, and the transmission mechanism is connected with the piston screw.

8. A high pressure micro-piston gas pump as claimed in claim 7, characterized in that The transmission mechanism includes a crankshaft, a bearing and a connecting rod, the connecting rod is connected with the crankshaft through the bearing, the bearing is nested on the outer edge of the crankshaft, an eccentric shaft hole is arranged on the crankshaft, the motor shaft of the driving motor is assembled in the eccentric shaft hole, and the connecting rod is connected with the piston screw.

9. A high pressure micro-piston gas pump as claimed in claim 8, characterized in that The crankshaft is provided with a positioning screw and a damping block, and the damping block is assembled on the crankshaft through the positioning screw.

10. A high pressure micro-piston gas pump as claimed in claim 1, wherein, The pump head is provided with a strip-shaped heat dissipation groove.

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