Miniature double cylinder electric high pressure air pump

Abstract

The inventor provides a miniature double-cylinder electric high-pressure air pump, comprising a frame; a rotating shaft, the axial direction of the rotating shaft is the front-to-back direction, and the rotating shaft is installed on the frame to rotate around its own axis. The rotating shaft is fixedly installed with a first connecting member and a second connecting member, the first connecting member and the second connecting member have a column A, and the second connecting member has a column B, and the columns A and B are located on both sides of the vertical plane and the horizontal plane where the axis of the rotating shaft A is located, a low-pressure cylinder; a high-pressure cylinder; and a power source for driving the rotating shaft to rotate. The meshing mode of the 45-degree helical gear A and the helical gear B is adopted. Compared with the transmission mode of the bevel gear and the turbine, the volume is small, space is saved, the gear ratio can be larger, and the bite force is stronger. The low-pressure cylinder and the high-pressure cylinder are located on both sides of the frame and on the same side of the rotating shaft. The power source is located directly above the frame. The overall structure is simple and the volume is small.

Description

Technical Field

[0001] The invention relates to an air pump for filling and exhausting such as a pressure gauge or a calibration source detection in a pressure sensor, and in particular to a miniature double-cylinder electric high-pressure air pump. Background Art

[0002] The existing air pump mainly includes: a pump body and a cylinder, and the cylinder is provided with a connecting rod, a cylinder body, a piston, an air inlet and an air outlet. The cylinder is arranged in the pump body, and the connecting rod in the cylinder drives the piston in the cylinder to reciprocate under the action of an external force. During the reciprocating motion of the piston, the external gas enters the cylinder from the air inlet, and the absorbed gas is compressed under the action of the piston and the cylinder, and is discharged through the air outlet into the device to be inflated, which has a large volume and a complex structure. Summary of the invention

[0003] The present invention designs a miniature double-cylinder electric high-pressure air pump for calibration sources such as pressure gauges and pressure sensors. The miniature double-cylinder electric high-pressure air pump adopts a meshing mode of a 45-degree bevel gear A and a bevel gear B. Compared with the transmission mode of a bevel gear and a turbine, the miniature double-cylinder electric high-pressure air pump has a small size and saves space. The gear ratio can be larger and the bite force is stronger. The low-pressure cylinder and the high-pressure cylinder are located on both sides of the frame and on the same side of the rotating shaft. The power source is located directly above the frame. The overall structure is simple and the size is small.

[0004] To achieve the above object, the present invention provides the following technical solution: a miniature double-cylinder electric high-pressure air pump, comprising:

[0005] frame;

[0006] The shaft has an axial direction in the front-to-back direction, and is installed on the frame so as to rotate around its own axis. A first connecting member and a second connecting member are fixedly installed on the shaft. The first connecting member and the second connecting member have a column A, and the second connecting member has a column B. Columns A and B are located on both sides of the vertical plane and the horizontal plane where the axis of the shaft A is located.

[0007] A low-pressure cylinder, one end of which is hinged on the frame, and the other end is hinged on the column A. The telescopic direction of the low-pressure cylinder is the front-back direction. The low-pressure cylinder has a cavity A, and a check valve A and a check valve B are installed on the cavity A. One end of the check valve A is used to connect to the air source, and the other end is used to connect to the cavity A;

[0008] A high-pressure cylinder, one end of which is hinged on the frame, and the other end is hinged on the column B. The expansion direction of the high-pressure cylinder is the front-to-back direction. The high-pressure cylinder has a cavity B, and a check valve C and a check valve D are installed on the cavity B. One end of the check valve B is used to connect with the check valve C, and the other end is used to connect with the cavity A. One end of the check valve C is used to connect with the check valve B, and the other end is used to connect with the cavity B. One end of the check valve D is used to connect with the cavity B, and the other end is used to connect with the carrier; and

[0009] A power source for driving the shaft to rotate;

[0010] Among them, the flow direction of one-way valve A is from the gas source to cavity A, the flow direction of one-way valve B is from cavity A to one-way valve C, the flow direction of one-way valve C is from one-way valve B to cavity B, and the flow direction of one-way valve D is from cavity B to the carrier.

[0011] On the basis of the above solution, preferably, the first connecting member and the column A, the second connecting member and the column B form a cam.

[0012] On the basis of the above scheme, as a preferred embodiment, the rotating shaft is located at the right end of the frame, and the fixed shaft that rotates around its own axis is rotatably installed at the left end of the frame through a bearing. The axial direction of the fixed shaft is front and rear, and the cylinder bodies of the low-pressure cylinder and the high-pressure cylinder are both fixed on the fixed shaft, and the axis of the fixed shaft and the axis of the rotating shaft are not in the same horizontal plane.

[0013] On the basis of the above solution, as a preferred embodiment, the telescopic rods of the low-pressure cylinder and the high-pressure cylinder are both hinged on the corresponding columns A and B through fisheye bearings.

[0014] On the basis of the above scheme, as a preferred embodiment, the power source is a motor mounted on the frame, a bevel gear A is fixedly mounted on the output shaft of the motor, and the bevel gear A meshes with a bevel gear B fixedly mounted on the rotating shaft.

[0015] On the basis of the above scheme, as a preferred embodiment, a front mounting plate and a rear mounting plate are fixedly installed on the right end of the frame, and the front mounting plate and the rear mounting plate are connected to the rotating shaft through bearings. The bevel gear B is fixed on the rotating shaft through a key and is located between the front mounting plate and the rear mounting plate.

[0016] Based on the above scheme, as a preferred embodiment, the left end of the front mounting plate and the rear mounting plate is bolted with a motor mounting seat, and the right end is fixed with a bearing seat, the motor is fixed on the motor mounting seat by bolts, the output shaft of the motor is installed on the bearing seat through a bearing, and the bevel gear A is fixed to the output shaft by a locking screw.

[0017] On the basis of the above solution, as a preferred embodiment, the helical gear A and the helical gear B are both 45-degree helical gears.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The helical gear A, helical gear B, low-pressure cylinder, high-pressure cylinder, bearing, fisheye bearing and other modular detachable (fixing methods such as bolts, locking screws, keys, etc.) are installed on the frame, which is convenient for disassembly, replacement and maintenance.

[0020] The meshing mode of 45-degree helical gear A and helical gear B is adopted. Compared with the transmission mode of bevel gear and turbine, it has small volume, saves space, has larger gear ratio and stronger bite force.

[0021] A helical gear B is designed between the front mounting plate and the rear mounting plate, and a motor is installed above the helical gear B. The nearly symmetrical design on the left and right occupies a small space as a whole and is stable during transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the present invention;

[0023] Figure 2 yes Figure 1 Rear view of

[0024] Figure 3 The present invention is a three-dimensional Figure 1 ;

[0025] Figure 4 The present invention is a three-dimensional Figure 2 . DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. In this application, detachable refers to a connection method that can separate a part from another part without changing the original structure of the part.

[0027] like Figure 1-4 As shown, the micro double-cylinder electric high-pressure air pump comprises:

[0028] Rack 1;

[0029] The shaft 2 has an axial direction in the front-to-back direction and is mounted on the frame so as to rotate around its own axis. A first connecting member 3 and a second connecting member 4 are fixedly mounted on the shaft. The first connecting member and the second connecting member have a column A5, and the second connecting member has a column B6. Columns A and B are located on both sides of the vertical and horizontal planes where the axis of the shaft A is located.

[0030] A low-pressure cylinder 7, one end of which is hinged on the frame, and the other end is hinged on the column A. The telescopic direction of the low-pressure cylinder is the front-back direction. The low-pressure cylinder has a cavity A, and a one-way valve A10 and a one-way valve B11 are installed on the cavity A. One end of the one-way valve A is used to connect to the air source, and the other end is used to connect to the cavity A.

[0031] A high-pressure cylinder 8, one end of which is hinged on the frame, and the other end is hinged on the column B. The telescopic direction of the high-pressure cylinder is the front-to-back direction. The high-pressure cylinder has a cavity B, and a one-way valve C12 and a one-way valve D13 are installed on the cavity B. One end of the one-way valve B is used to connect with the one-way valve C, and the other end is used to connect with the cavity A. One end of the one-way valve C is used to connect with the one-way valve B, and the other end is used to connect with the cavity B. One end of the one-way valve D is used to connect with the cavity B, and the other end is used to connect with the carrier; and

[0032] A power source for driving the shaft to rotate;

[0033] Among them, the flow direction of one-way valve A is from the gas source to cavity A, the flow direction of one-way valve B is from cavity A to one-way valve C, the flow direction of one-way valve C is from one-way valve B to cavity B, and the flow direction of one-way valve D is from cavity B to the carrier.

[0034] Both cylinder A and cylinder B are cylinders.

[0035] The first connecting member and the cylinder A, the second connecting member and the cylinder B form a cam.

[0036] The rotating shaft is located at the right end of the frame, and the fixed shaft rotating around its own axis is rotatably installed at the left end of the frame through a bearing. The axial direction of the fixed shaft 9 is front and rear, and the cylinder bodies of the low-pressure cylinder and the high-pressure cylinder are fixed on the fixed shaft. The axis of the fixed shaft is not in the same horizontal plane as the axis of the rotating shaft.

[0037] The telescopic rods of the low-pressure cylinder and the high-pressure cylinder are both hinged on the corresponding columns A and B through fisheye bearings 14.

[0038] The power source is a motor 15 mounted on the frame, and a bevel gear A17 is fixedly mounted on the output shaft 16 of the motor. The bevel gear A meshes with a bevel gear B18 fixedly mounted on the rotating shaft.

[0039] A front mounting plate 19 and a rear mounting plate 20 are fixedly mounted on the right end of the frame. Both the front mounting plate and the rear mounting plate are connected to the rotating shaft through bearings. The bevel gear B is fixed on the rotating shaft through a key and is located between the front mounting plate and the rear mounting plate.

[0040] The left end of the front mounting plate and the rear mounting plate is fixed with a motor mounting seat 21 by bolts, and the right end is fixed with a bearing seat 22. The motor is fixedly mounted on the motor mounting seat by bolts, the output shaft of the motor is mounted on the bearing seat through a bearing, and the bevel gear A is fixed on the output shaft by a locking screw.

[0041] Helical gear A and helical gear B are both 45-degree helical gears.

[0042] In the above scheme, the helical gear A, the helical gear B, the low-pressure cylinder, the high-pressure cylinder, the bearing, the fisheye bearing and the like are modularly detachable (fixed by bolts, locking screws, keys and the like) installed on the frame, which is convenient for disassembly, replacement and maintenance.

[0043] The meshing mode of 45-degree helical gear A and helical gear B is adopted. Compared with the transmission mode of bevel gear and turbine, it has small volume, saves space, has larger gear ratio and stronger bite force.

[0044] A helical gear B is designed between the front mounting plate and the rear mounting plate, and a motor is installed above the helical gear B. The nearly symmetrical design on the left and right occupies a small space as a whole and is stable during transmission.

[0045] The gas source can be the atmosphere or a closed container, and the carrier can also be the atmosphere or a closed container. For example, during the inflation process, the gas source is the atmosphere, and the carrier is a closed container such as a pressure calibration source (pressure gauge, pressure sensor, etc.). During the exhaust process (vacuuming), the gas source is a closed container, and the carrier is the atmosphere.

[0046] Taking the inflation process as an example, in the following text, the retraction and extension of the low-pressure and high-pressure cylinders refer to the extension and retraction of their telescopic rods.

[0047] When in use, the action status is as follows: the low-pressure cylinder extends and the high-pressure cylinder retracts at the same time, the one-way valve A opens to replenish gas, the one-way valve B and the one-way valve C are closed, and the one-way valve D opens to inflate the previous stroke, and the atmosphere enters cavity A, the low-pressure cylinder retracts and the high-pressure cylinder extends at the same time, the one-way valve A closes, the one-way valve B opens, the one-way valve C opens, and the one-way valve D closes. The gas in cavity A is pressed into cavity B by the piston of the low-pressure cylinder, the high-pressure cylinder retracts and the low-pressure cylinder extends at the same time, the one-way valve D opens to realize inflation, the one-way valve A opens to replenish gas for the next stroke, and the one-way valve B and the one-way valve C are closed.

[0048] Among them, the diameter of the low-pressure cylinder is larger than the diameter of the high-pressure cylinder, the power required by the motor is small, and the cost can be saved.

[0049] Of course, according to the structure of the present invention, by changing its size and motor power, it can also be formed into a large air pump structure, which should also fall within the protection scope of the present invention, wherein the micro is a relative concept.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A miniature double-cylinder electric high-pressure air pump, characterized in that: include, frame; The shaft has an axial direction in the front-to-back direction, and is installed on the frame so as to rotate around its own axis. A first connecting member and a second connecting member are fixedly installed on the shaft. The first connecting member and the second connecting member have a column A, and the second connecting member has a column B. Columns A and B are located on both sides of the vertical plane and the horizontal plane where the axis of the shaft A is located. A low-pressure cylinder, one end of which is hinged on the frame, and the other end is hinged on the column A. The telescopic direction of the low-pressure cylinder is the front-back direction. The low-pressure cylinder has a cavity A, and a check valve A and a check valve B are installed on the cavity A. One end of the check valve A is used to connect to the air source, and the other end is used to connect to the cavity A; A high-pressure cylinder, one end of which is hinged on the frame, and the other end is hinged on the column B. The expansion direction of the high-pressure cylinder is the front-to-back direction. The high-pressure cylinder has a cavity B, and a check valve C and a check valve D are installed on the cavity B. One end of the check valve B is used to connect with the check valve C, and the other end is used to connect with the cavity A. One end of the check valve C is used to connect with the check valve B, and the other end is used to connect with the cavity B. One end of the check valve D is used to connect with the cavity B, and the other end is used to connect with the carrier; and A power source for driving the shaft to rotate; Among them, the flow direction of the one-way valve A is from the gas source to the cavity A, the flow direction of the one-way valve B is from the cavity A to the one-way valve C, the flow direction of the one-way valve C is from the one-way valve B to the cavity B, and the flow direction of the one-way valve D is from the cavity B to the carrier; The first connecting member and the cylinder A, the second connecting member and the cylinder B form a cam; The power source is a motor installed on the frame, and a bevel gear A is fixedly installed on the output shaft of the motor. The bevel gear A meshes with the bevel gear B fixedly installed on the rotating shaft.

2. The miniature double-cylinder electric high-pressure air pump according to claim 1, characterized in that: The rotating shaft is located at the right end of the frame, and the fixed shaft that rotates around its own axis is rotatably installed at the left end of the frame through a bearing. The axial direction of the fixed shaft is front and back, and the cylinder bodies of the low-pressure cylinder and the high-pressure cylinder are fixed on the fixed shaft. The axis of the fixed shaft is not in the same horizontal plane as the axis of the rotating shaft.

3. The miniature double-cylinder electric high-pressure air pump according to claim 2, characterized in that: The telescopic rods of the low-pressure cylinder and the high-pressure cylinder are both hinged on the corresponding columns A and B through fisheye bearings.

4. The miniature double-cylinder electric high-pressure air pump according to claim 1, characterized in that: A front mounting plate and a rear mounting plate are fixedly installed on the right end of the frame. Both the front mounting plate and the rear mounting plate are connected to the rotating shaft through bearings. The bevel gear B is fixed on the rotating shaft through a key and is located between the front mounting plate and the rear mounting plate.

5. The miniature double-cylinder electric high-pressure air pump according to claim 4, characterized in that: The left ends of the front mounting plate and the rear mounting plate are fixed with motor mounting seats by bolts, and the right ends are fixed with bearing seats. The motor is fixedly mounted on the motor mounting seats by bolts, the output shaft of the motor is mounted on the bearing seat by bearings, and the bevel gear A is fixed on the output shaft by locking screws.

6. The miniature double-cylinder electric high-pressure air pump according to claim 1, characterized in that: Helical gear A and helical gear B are both 45-degree helical gears.

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