Dual-purpose miniature double-head air pump for pumping and beating

Abstract

The utility model discloses a dual-purpose miniature double-head air pump for pumping and beating, which relates to the field of miniature diaphragm air pumps and comprises a pump body, round hole steps are arranged on two side walls of the pump body, a primary pump and a secondary pump are symmetrically mounted at two ends of the pump body, and the primary pump and the secondary pump are identical in structure. The pump head and the main body are both formed in a compact and integrated die-casting mode, the design focuses on the fact that the size of the appearance is minimized, the whole machine can operate for a long time, and production and assembly are simple and fast, the main body is provided with a rotating shaft concentricity positioning hole of a driving motor, operation concentricity of a rotating shaft is guaranteed, and the loading capacity of a product can be improved. The service life of the whole machine is prolonged. Due to the double-pump-head design, air pumping and pumping can be achieved, two-stage compression of gas media can be achieved in a series connection mode and a parallel connection mode, and the output performance of a product is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of miniature diaphragm air pumps, specifically a miniature dual-head air pump that can be used for both pumping and dispensing. Background Technology

[0002] Existing micro air pumps generally have the characteristics of large size and high power consumption under the premise of the same flow rate, which makes them unsuitable for some mobile small automated mechanical equipment. Secondly, most existing micro air pumps cannot operate at full load for a long time in complex working conditions, because the automated equipment in this application field is expensive and has diverse functions. Utility Model Content

[0003] The purpose of this utility model is to provide a miniature dual-head air pump that can be used for both pumping and dispensing, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a miniature dual-head air pump for both pumping and dispensing, comprising a pump body, with circular step openings on both side walls of the pump body; a primary pump and a secondary pump symmetrically installed at both ends of the pump body; the primary pump and the secondary pump having the same structure; the primary pump comprising a primary pump head, the primary pump head being fixedly connected to one side of the circular step on the pump body by a primary pump head bolt; a primary diaphragm being provided between the primary pump head and the circular step on the pump body; a primary outlet valve being installed at the outlet end of the primary pump head, and a primary inlet valve being installed at the inlet end of the primary pump head; and a drive mechanism being installed between the primary pump and the secondary pump, the drive mechanism being used to drive the primary diaphragm on the primary pump and the secondary diaphragm on the secondary pump to swing on the circular step on both side walls of the pump body.

[0005] As a further embodiment of this utility model: the driving mechanism includes a transmission assembly and a drive motor. The transmission assembly is provided in two sets, and the two sets of transmission assemblies are respectively connected to the primary diaphragm on the primary pump and the secondary diaphragm on the secondary pump. The drive motor is installed on one end face of the pump body, and the output shaft of the drive motor extends into the interior of the pump body and is drivenly connected to the two sets of transmission assemblies.

[0006] As a further embodiment of this utility model: the transmission assembly includes a crankshaft, the crankshaft is provided with an eccentric shaft hole, the output shaft of the drive motor is assembled in the eccentric shaft hole of the crankshaft, and the outer wall of the crankshaft is connected to the first-stage connecting rod through a first-stage connecting rod bearing.

[0007] As a further embodiment of this utility model: the primary connecting rod and the primary diaphragm are fixedly connected by a primary upper round cover, a primary lower round cover and a primary diaphragm bolt. The primary upper round cover and the primary lower round cover are respectively located at both ends of the primary diaphragm. The primary diaphragm bolt passes through the axis of the primary upper round cover, the primary diaphragm and the primary lower round cover in sequence and is connected to the end of the primary connecting rod.

[0008] As a further embodiment of this utility model: the first-stage connecting rod bearing is nested in the outer wall of the crankshaft, and a positioning ring is provided between the first-stage connecting rod bearing and the crankshaft.

[0009] As a further improvement of this utility model: a first-stage U-shaped sealing ring is installed in the upper slot of the first-stage pump head, and a first-stage sealing cover plate is provided on the outer end of the first-stage pump head. The first-stage sealing cover plate and the first-stage U-shaped sealing ring are tightly pressed together by the bolts of the first-stage pump head.

[0010] As a further improvement of this invention, a balance block is installed at the end of the crankshaft.

[0011] As a further embodiment of this utility model: a slot is provided at the bottom of the pump body, and the output shaft of the drive motor is rotatably connected to the bottom of the pump body through a positioning bearing. A bearing retainer is provided between the slot at the bottom of the pump body and the positioning bearing.

[0012] As a further improvement of this utility model:

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The pump head and main body of this utility model are both integrally die-cast with a compact design, emphasizing minimal size. The machine can operate for extended periods, and assembly is simple and quick. The main body features a concentric positioning hole for the drive motor shaft, ensuring shaft concentricity, improving load capacity, and extending the machine's lifespan. The dual-pump design allows for both suction and pumping, and series and parallel connections enable two-stage compression of the gas medium, enhancing output performance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the dispersed structure of this utility model;

[0017] Figure 3 This is a front structural diagram of the integrated pump head of this utility model;

[0018] Figure 4 This is a schematic diagram of the rear structure of the integrated pump head of this utility model;

[0019] Figure 5 This is a cross-sectional view of the present invention.

[0020] In the diagram: 1. Primary pump head bolt; 2. Primary sealing cover plate; 3. Primary figure-eight seal ring; 4. Primary exhaust umbrella valve; 5. Primary pump head; 6. Primary intake umbrella valve; 7. Primary diaphragm bolt; 8. Primary upper round cover; 9. Primary diaphragm; 10. Primary lower round cover; 11. Primary connecting rod bearing; 12. Primary connecting rod; 1a. Secondary pump head bolt; 2a. Secondary sealing cover plate; 3a. Secondary figure-eight seal ring; 4a. Secondary exhaust umbrella valve; 5a. Secondary pump head; 6a. Secondary intake umbrella valve; 7a. Secondary diaphragm bolt; 8a. Secondary upper round cover; 9a. Secondary diaphragm; 10a. Secondary lower round cover; 11a. Secondary connecting rod bearing; 12a. Secondary connecting rod; 13. Pump body; 14. Bearing retainer; 15. Positioning bearing; 16. Balance weight; 17. Crankshaft; 18. Front side plate; 19. Rear side plate; 20. Drive motor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 In this embodiment of the present invention, a miniature dual-head air pump for both pumping and dispensing includes a pump body 13. Circular holes and steps are provided on both sides of the pump body 13. A primary pump and a secondary pump are symmetrically installed at both ends of the pump body 13. The primary pump and the secondary pump have the same structure. The primary pump includes a primary pump head 5. The primary pump head 5 is fixedly connected to one side of the circular hole step on the pump body 13 by a primary pump head bolt 1. A primary diaphragm 9 is provided between the primary pump head 5 and the circular hole step on the pump body 13. A primary air outlet umbrella valve 4 is installed at the air outlet end of the primary pump head 5, and a primary air inlet umbrella valve 6 is installed at the air inlet end of the primary pump head 5.

[0023] A drive mechanism is installed between the primary pump and the secondary pump. The drive mechanism includes a transmission assembly and a drive motor 20. There are two sets of transmission assemblies. The two sets of transmission assemblies are respectively connected to the primary diaphragm 9 on the primary pump and the secondary diaphragm 9a on the secondary pump. The drive motor 20 is installed on one end face of the pump body 13. The output shaft of the drive motor 20 extends into the interior of the pump body 13 and is driven by the two sets of transmission assemblies. It is used to drive the primary diaphragm 9 on the primary pump and the secondary diaphragm 9a on the secondary pump to swing on the circular hole steps on both sides of the pump body 13.

[0024] The transmission assembly includes a crankshaft 17 with an eccentric shaft hole. The output shaft of the drive motor 20 is fitted into the eccentric shaft hole of the crankshaft 17. The outer wall of the crankshaft 17 is connected to the first-stage connecting rod 12 via a first-stage connecting rod bearing 11. The first-stage connecting rod 12 is fixedly connected to the first-stage diaphragm 9 via a first-stage upper round cover 8, a first-stage lower round cover 10, and a first-stage diaphragm bolt 7. The first-stage upper round cover 8 and the first-stage lower round cover 10 are located at both ends of the first-stage diaphragm 9, respectively. The first-stage diaphragm bolt 7 passes through the axis of the first-stage upper round cover 8, the first-stage diaphragm 9, and the first-stage lower round cover 10 in sequence and connects to the end of the first-stage connecting rod 12.

[0025] In this embodiment, the dual-head primary and secondary pumps work together to generate a low-pulsation airflow, improving the stability of the air pump. The air pump structure and components are made of durable materials, making it a miniature air pump capable of continuous operation in industrial settings or harsh conditions. The product is primarily used in the field of mechanical automation, providing a negative or positive pressure air source for pneumatic components.

[0026] Specifically, the dual-purpose miniature dual-head air pump mainly includes a primary pump, a secondary pump, a pump body 13, and a drive mechanism. The pump body 13 is used to fix the drive motor 20. The output shaft of the drive motor 20 is adapted inside the pump body 13. The crankshaft 17 is tightly fitted to the inner ring of the connecting rod 12 through the connecting rod bearing 11. The top of the connecting rod 12 is assembled into a connecting rod assembly through the upper round cover 8, the lower round cover 10, and the diaphragm 9 used to vertically fix it. The connecting rod 12 assembly is fitted onto the drive shaft inside the pump body 13. The diaphragm 9 is finely adjusted to the position of the pump body 13. At the center of the upper circular hole step 3, when the drive motor 20 rotates, the diaphragm 9 will swing up and down at the position of the upper circular hole step on the pump body 13 through the swing of the crankshaft 17. When it swings downward, it will draw in gas through the air inlet umbrella valve 6. At this time, the air outlet umbrella valve 4 is in a closed state. When the diaphragm 9 swings upward, it will discharge gas through the air outlet umbrella valve 4. At this time, the air inlet umbrella valve 6 is in a closed state. With the high-frequency up and down swing of the diaphragm 9, gas will be continuously drawn in and discharged, thereby achieving the functions of vacuuming and air compression.

[0027] The secondary pump in this design has the same structure as the primary pump. The secondary pump mainly includes: a secondary pump head bolt 1a; a secondary sealing cover plate 2a; a secondary figure-eight sealing ring 3a; a secondary outlet umbrella valve 4a; a secondary pump head 5a; a secondary inlet umbrella valve 6a; a secondary diaphragm bolt 7a; a secondary upper round cover 8a; a secondary diaphragm 9a; a secondary lower round cover 10a; a secondary connecting rod bearing 11a; and a secondary connecting rod 12a. It is a dual-head pump design. The integrated pump head 5 and integrated pump head 5a are installed on both sides of the pump body 13. The integrated pump head 5 is the primary pump, with 501 as the inlet and 502 as the outlet. The integrated pump head 5a is the secondary pump, with 503 as the inlet and 504 as the outlet. Connecting 501 and 503 in parallel, and 502 and 504 in parallel, can double the inlet and outlet flow rates of the pump. Connecting 501 and 504 in series enables secondary compression of the medium gas, increasing both the inlet and outlet pressures.

[0028] When the diaphragm of the first-stage pump swings towards the pump body, the inlet umbrella valve 6 bounces towards the pump body 13 along with the swing of the diaphragm 9. The inlet umbrella valve 6 moves away from the contact surface of the integrated pump head 5 and is open to the outside, drawing in gas and generating intake air. At this time, the outlet umbrella valve 4, along with the swing of the diaphragm 9, adheres to the contact surface of the integrated pump head 5 and closes, blocking the outside. Then, when the diaphragm of the first-stage pump swings towards the pump head, the inlet umbrella valve 6, along with the swing of the diaphragm 9, adheres to the contact surface of the integrated pump head 5 and closes, blocking the outside. At this time, the outlet umbrella valve 4, along with the swing of the diaphragm 9, bounces towards the sealing cover plate 2. The outlet umbrella valve 4, at this time, moves away from the contact surface of the integrated pump head 5 and is open to the outside, discharging gas and generating outlet air. When the drive motor 20 rotates at a high speed, the diaphragm will form a high-frequency swing at the connecting rod part under the drive of the crankshaft 17, thus forming continuous airflow and gas pressure.

[0029] It should be noted that the oscillation direction of the diaphragm of the secondary pump is exactly opposite to that of the diaphragm of the primary pump. The primary pump generates suction while the secondary pump generates exhaust. When 501 and 503 are connected in parallel, and 502 and 504 are connected in parallel, the intake and exhaust pulsations of the air pump can be canceled, thereby improving the stability of the airflow. The intake and exhaust ports of the integrated pump head 5 are threaded, which allows for flexible installation of air pipe connectors. The inlet umbrella valve contact part 505 adopts a concave design to reduce unnecessary gas compression space and prevent contact wear between the inlet umbrella valve part and the diaphragm part, thereby improving the gas compression efficiency of the air pump.

[0030] Please refer to this carefully. Figures 1-4 The first-stage connecting rod bearing 11 is nested in the outer wall of the crankshaft 17, and a positioning ring is provided between the first-stage connecting rod bearing 11 and the crankshaft 17; a balance block 16 is installed at the end of the crankshaft 17.

[0031] In this embodiment: the first-stage connecting rod 12 is connected to the crankshaft 17 through the first-stage bearing 11, and the second-stage connecting rod 12a is connected to the crankshaft 17 through the second-stage bearing 11a. The first-stage bearing 11 and the second-stage bearing 11a are both nested on the outer edge of the crankshaft 17, and the gap between them is controlled by the positioning ring 21.

[0032] Please refer to this carefully. Figures 1-4 A first-stage figure-eight sealing ring 3 is installed in the upper slot of the first-stage pump head 5, and a first-stage sealing cover plate 2 is provided on the outer end of the first-stage pump head 5. The first-stage sealing cover plate 2 and the first-stage figure-eight sealing ring 3 are tightly squeezed together by the first-stage pump head bolt 1.

[0033] In this embodiment: the figure-eight sealing ring 3 is installed in the upper slot of the integrated pump head 5, and the pump head bolt 1 is pressed onto the upper part of the integrated pump head through the sealing cover plate 2, so that the figure-eight sealing ring can play a sealing role.

[0034] Please refer to this carefully. Figures 1-4 The bottom of the pump body 13 has a slot, and the output shaft of the drive motor 20 is rotatably connected to the bottom of the pump body 13 through a positioning bearing 15. A bearing retainer 14 is provided between the slot at the bottom of the pump body 13 and the positioning bearing 15.

[0035] In this embodiment, the holes of the pump body 13 and the positioning bearing 15 are designed as a single piece, which has higher positioning accuracy and can make the shaft of the drive motor 20 maintain high mechanical stability when running under load, reduce shaking, and extend the service life of the whole machine. The bearing retaining spring 14 is locked in the reserved slot of the main body 13 to fix the positioning bearing 15 and prevent it from falling off.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual-purpose micro dual-head air pump for pumping and spanking, characterized by, include: Pump body (13), with round hole steps on both sides of the pump body (13); A primary pump and a secondary pump are symmetrically installed at both ends of the pump body (13). The primary pump and the secondary pump have the same structure. The primary pump includes a primary pump head (5). The primary pump head (5) is fixedly connected to one side of the circular hole step by a primary pump head bolt (1). A primary diaphragm (9) is provided between the primary pump head (5) and the circular hole step. A primary air outlet umbrella valve (4) is installed at the air outlet end of the primary pump head (5), and a primary air inlet umbrella valve (6) is installed at the air inlet end of the primary pump head (5). A drive mechanism is installed between the primary pump and the secondary pump. The drive mechanism is used to drive the primary diaphragm (9) on the primary pump and the secondary diaphragm (9a) on the secondary pump to swing on the circular hole steps on both sides of the pump body (13).

2. The dual-purpose micro dual-head air pump of claim 1, wherein, The drive mechanism includes a transmission assembly and a drive motor (20). The transmission assembly is provided in two sets, which are respectively connected to the primary diaphragm (9) on the primary pump and the secondary diaphragm (9a) on the secondary pump. The drive motor (20) is installed on one end face of the pump body (13), and the output shaft of the drive motor (20) extends into the interior of the pump body (13) and is drivenly connected to the two sets of transmission assemblies.

3. The dual-purpose micro dual-head air pump of claim 2, wherein, The transmission assembly includes a crankshaft (17) with an eccentric shaft hole. The output shaft of the drive motor (20) is fitted into the eccentric shaft hole of the crankshaft (17). The outer wall of the crankshaft (17) is connected to the first-stage connecting rod (12) through a first-stage connecting rod bearing (11).

4. The dual-purpose micro dual-head air pump of claim 3, wherein, The primary connecting rod (12) and the primary diaphragm (9) are fixedly connected by a primary upper round cover (8), a primary lower round cover (10) and a primary diaphragm bolt (7). The primary upper round cover (8) and the primary lower round cover (10) are located at both ends of the primary diaphragm (9). The primary diaphragm bolt (7) passes through the axis of the primary upper round cover (8), the primary diaphragm (9) and the primary lower round cover (10) in sequence and is connected to the end of the primary connecting rod (12).

5. The dual-purpose micro dual-head air pump of claim 4, wherein, The first-stage connecting rod bearing (11) is nested on the outer wall of the crankshaft (17), and a positioning ring is provided between the first-stage connecting rod bearing (11) and the crankshaft (17).

6. The dual-purpose micro dual-head air pump of claim 5, wherein, A first-stage figure-eight sealing ring (3) is installed in the upper slot of the first-stage pump head (5), and a first-stage sealing cover plate (2) is provided on the outer end of the first-stage pump head (5). The first-stage sealing cover plate (2) and the first-stage figure-eight sealing ring (3) are tightly squeezed together by the first-stage pump head bolt (1).

7. The dual-purpose micro dual-head air pump of claim 3, wherein, The crankshaft (17) is equipped with a balance block (16) at its end.

8. The dual-purpose micro dual-head air pump of claim 2, wherein, The bottom of the pump body (13) is provided with a slot, and the output shaft of the drive motor (20) is rotatably connected to the bottom of the pump body (13) through a positioning bearing (15). A bearing retainer (14) is provided between the slot at the bottom of the pump body (13) and the positioning bearing (15).

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