CN215409130U

CN215409130U - Multi-station miniature air pump

Info

Publication number: CN215409130U
Application number: CN202121382968.7U
Authority: CN
Inventors: 王海雨
Original assignee: Guangdong Keyukang Technology Co ltd
Current assignee: Guangdong Keyukang Technology Co ltd
Priority date: 2021-06-21
Filing date: 2021-06-21
Publication date: 2022-01-04
Anticipated expiration: 2031-06-21

Abstract

The utility model discloses a multi-station miniature air pump, which comprises: the double-shaft extension motor is provided with two rotating shafts, each rotating shaft is synchronously connected with a counterweight eccentric wheel, and the counterweight directions of the two counterweight eccentric wheels are opposite; the pump body, its quantity is two the pump body is connected respectively in the biax and is stretched the both sides of motor, every the pump body all is equipped with a plurality of pump subassemblies, every the counter weight eccentric wheel all is connected with all pump subassemblies that correspond in the pump body. Compared with the prior art, the utility model adopts a double-shaft extension motor to drive a plurality of pump assemblies, and the pump assemblies are mutually independent and do not interfere with each other so as to meet the multi-station requirement of products; in addition, the counterweight eccentric wheels are used for enabling eccentric motion to tend to be stable, and the counterweight directions of the two counterweight eccentric wheels are set to be opposite, so that the pump assemblies on two sides of the double-shaft extension motor can achieve dynamic balance, and the purpose of shock absorption is achieved.

Description

Multi-station miniature air pump

Technical Field

The utility model relates to the technical field of displacement pumps, in particular to a multi-station miniature air pump.

Background

The pump body is a device capable of removing fluid from a closed space or adding fluid from the closed space, the pump body which is widely applied in industry is a micro air pump, and the micro air pump has the advantages of small volume, low power consumption, stable working condition and the like, so that the pump body is widely applied to the industries of medical health, scientific research, laboratories, environmental protection, instruments and meters, chemical industry, household appliances and the like.

For products with multiple station requirements, such as sprayers or beauty instruments, the corresponding number of micro air pumps are generally required to meet the multiple station requirements of the products, or a double-way interface or a three-way interface is arranged in an air channel to meet the multiple station requirements of the products. The arrangement of a plurality of miniature air pumps undoubtedly increases the manufacturing cost, and the arrangement of a two-way interface or a three-way interface in an air passage can shunt air pressure, so that once a plurality of stations are used simultaneously, the equipment can not be normally used due to insufficient air pressure.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a multi-station micro air pump, which solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.

According to the embodiment of the first aspect of the utility model, the multi-station miniature air pump comprises:

the double-shaft extension motor is provided with two rotating shafts, each rotating shaft is synchronously connected with a counterweight eccentric wheel, and the counterweight directions of the two counterweight eccentric wheels are opposite;

the pump body, its quantity is two the pump body is connected respectively in the biax and is stretched the both sides of motor, every the pump body all is equipped with a plurality of pump subassemblies, every the counter weight eccentric wheel all is connected with all pump subassemblies that correspond in the pump body.

The multi-station miniature air pump provided by the embodiment of the utility model at least has the following beneficial effects: compared with the prior art, the utility model adopts a double-shaft extension motor to drive a plurality of pump assemblies, and the pump assemblies are mutually independent and do not interfere with each other so as to meet the multi-station requirement of products; in addition, the counterweight eccentric wheels are used for enabling eccentric motion to tend to be stable, and the counterweight directions of the two counterweight eccentric wheels are set to be opposite, so that the pump assemblies on two sides of the double-shaft extension motor can achieve dynamic balance, and the purpose of shock absorption is achieved.

According to some embodiments of the present invention, each two adjacent pump assemblies are mounted in opposite directions for better balancing.

According to some embodiments of the utility model, each of the pump assemblies is provided with a bearing, and all the bearings are respectively sleeved on the corresponding weighted eccentric wheels. The arrangement of the bearing can reduce the rotation loss between the counterweight eccentric wheel and the pump assembly so as to improve the quality of eccentric motion.

According to some embodiments of the present invention, each of the pump bodies includes a housing and a plurality of pump assemblies, each of the pump assemblies includes a piston rod, a cup, a valve plate and a sealing cover, one end of the piston rod is provided with the bearing, the other end of the piston rod is connected to the cup, the cup is hermetically connected to the valve plate, so that a variable volume cavity is formed between the cup and the valve plate, the housing, the valve plate and the sealing cover are sequentially connected, the valve plate and the sealing cover are provided with an air inlet channel and an air outlet channel, the air inlet channel and the air outlet channel are respectively in one-way communication with the variable volume cavity, the air inlet channel is in communication with the variable volume cavity, the variable volume cavity is in communication with the air outlet channel, so that when the pump assembly is used for air inlet, the air outlet channel is closed, when the pump assembly is used for air outlet, the inlet passage is closed to ensure proper use of the pump assembly.

According to some embodiments of the utility model, the cover is provided with an inlet nozzle and an outlet nozzle, the inlet nozzle and the outlet nozzle being in communication with the inlet channel and the outlet channel, respectively. When vacuum pumping is needed, the air inlet nozzle is used for being connected with a vacuum pumping pipe, and the air outlet nozzle can be arranged in a default mode; when the air needs to be inflated, the air outlet nozzle is used for being connected with an inflation pipe, and the air inlet nozzle can be arranged in a default mode.

According to some embodiments of the utility model, the cover cap is provided with two indication marks corresponding to the inlet nozzle and the outlet nozzle, respectively, so that a user can visually identify the inlet nozzle and the outlet nozzle.

According to some embodiments of the utility model, each of the housings includes a housing frame connected to the dual-axis motor and a removable cover detachably connected to the housing frame to facilitate maintenance or repair of the pump assembly.

According to some embodiments of the utility model, each of the housings is provided with a mounting ear, and the mounting ear is provided with a mounting hole so as to connect the multi-station micro air pump to other components.

According to some embodiments of the present invention, in order to ensure accurate installation of the sealing cover and the valve plate, the sealing cover is provided with a plurality of positioning pillars, the valve plate is provided with a plurality of positioning holes, and all the positioning pillars and all the positioning holes are respectively arranged in a one-to-one correspondence manner.

According to some embodiments of the utility model, each pump body is provided with two pump assemblies, and the multi-station micro air pump has a total of four stations.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a multi-station micro air pump according to an embodiment of the present invention;

FIG. 2 is a schematic perspective view of the multi-station micro air pump shown in FIG. 1 with the housing removed;

FIG. 3 is a right side view of the multi-station micro air pump shown in FIG. 2;

fig. 4 is a partially exploded view of the multi-station micro air pump shown in fig. 1.

In the drawings: 100-double-shaft extension motor, 200-pump body, 110-rotating shaft, 300-counterweight eccentric wheel, 310-counterweight part, 320-eccentric part, 111-flat position, 400-pump assembly, 401-left pump body, 402-right pump body, 410-piston rod, 420-leather cup, 430-valve plate, 440-sealing cover, 411-bearing, 431-one-way conducting piece, 321-groove, 210-shell frame, 220-movable cover, 230-mounting lug, 231-mounting hole, 441-air inlet nozzle, 442-air outlet nozzle and 443-indication mark.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

As shown in fig. 1 to 4, the multi-station micro air pump according to the embodiment of the first aspect of the present invention includes a dual-shaft stretching motor 100 and two pump bodies 200, wherein the dual-shaft stretching motor 100 is provided with two rotating shafts 110, and the dual-shaft stretching motor 100 is a prior art, and the two rotating shafts 110 rotate synchronously and are distributed linearly; each of the rotating shafts 110 is synchronously connected with a counterweight eccentric wheel 300, the counterweight eccentric wheel 300 includes a counterweight portion 310 and an eccentric portion 320, which may be integrally formed or separately arranged, in this embodiment, the counterweight portion 310 and the eccentric portion 320 are integrally formed; in order to realize the synchronous connection between the rotating shaft 110 and the eccentric portion 320, the rotating shaft 110 is provided with a flat position 111, the eccentric portion 320 is provided with an eccentric hole matched with the structure of the flat position 111, or the rotating shaft 110 and the eccentric hole are synchronously connected through a key and a key slot, and the counterweight portion 310 is used for enabling the counterweight eccentric wheel 300 to achieve static balance so as to enable the eccentric motion to tend to be stable. In other embodiments, a dual-shaft pneumatic motor may be used instead of the dual-shaft electric motor 100, but the dual-shaft pneumatic motor is not preferred because of its large volume.

In addition, two the pump body 200 is connected respectively in the both sides that the motor 100 is stretched to the biax, every the pump body 200 all is equipped with two pump assembly 400, every the counter weight eccentric wheel 300 all is connected with all pump assembly 400 in the corresponding pump body 200, makes the motor 100 is stretched to the biax can drive all pump assembly 400, and each pump assembly 400 is independent each other, and each mutual noninterference to satisfy the multistation demand of product. It is understood that the number of the pump assemblies 400 in each pump body 200 can also be three, four, etc., but is not limited thereto, and when the number of the pump assemblies 400 in each pump body 200 is two, three or four, the multi-station micro air pump has four, six or eight stations, respectively. As shown in fig. 2, in order to dynamically balance the pump assemblies 400 on both sides of the dual shaft extension motor 100, the two weighted eccentrics 300 have opposite weights. The pump 200 positioned on the left side of the double-shaft extension motor 100 is referred to as a left pump 401, and the pump 200 positioned on the right side of the double-shaft extension motor 100 is referred to as a right pump 402, and the structure of the left pump 401 is substantially the same as that of the right pump 402 for mass production of the present invention. Since the structure of the left pump body 401 is substantially the same as that of the right pump body 402, the present invention will be described in detail hereinafter only with reference to the structure of the right pump body 402, and the structure of the left pump body 401 can be referred to the structure of the right pump body 402.

As shown in fig. 4, in particular, the right pump body 402 includes a housing and two pump assemblies 400, each pump assembly 400 includes a piston rod 410, a cup 420, a valve plate 430 and a cover 440, a bearing 411 is installed at one end of the piston rod 410, and all the bearings 411 are respectively sleeved on the corresponding eccentric portions 320, that is, the weighted eccentric 300 and the piston rod 410 are rotatably connected through the bearing 411, so as to reduce the rotational loss between the weighted eccentric 300 and the piston rod 410, thereby improving the mass of eccentric motion; the other end of the piston rod 410 is connected with the cup 420, the cup 420 is hermetically connected with the valve plate 430 through an adhesive, so that a variable volume cavity is formed between the cup 420 and the valve plate 430, the piston rod 410 performs piston motion along with the eccentric rotation of the counterweight eccentric wheel 300, and the piston rod 410 drives the cup 420 to change the volume in the variable volume cavity. The housing, the valve plate 430 and the sealing cover 440 are sequentially connected through a connecting bolt, the valve plate 430 and the sealing cover 440 are jointly provided with an air inlet channel and an air outlet channel, the air inlet channel and the air outlet channel are not communicated with each other, the valve plate 430 is provided with an air inlet and an air outlet at the position of the variable volume cavity, and the valve plate 430 is provided with a one-way conducting piece 431, such as an umbrella or a diaphragm, at the position of the air inlet and the position of the air outlet, so that the air inlet channel and the air outlet channel can be respectively in one-way conduction with the variable volume cavity, the air inlet channel is conducted towards the direction of the variable volume cavity, the variable volume cavity is conducted towards the direction of the air outlet channel, and therefore it is ensured that the air inlet channel is only used for flowing gas, and the air outlet channel is only used for flowing gas. When the cavity volume of the leather cup 420 gradually increases along with the piston movement of the piston rod 410, the variable volume cavity is in a negative pressure state, in this state, the external air can enter the variable volume cavity of the leather cup 420 through the air inlet channel, and the air outlet is sealed by the one-way conducting piece 431; when the cavity volume of the leather cup 420 gradually decreases along with the movement of the piston rod 410, the variable volume cavity is in a positive pressure state, in this state, the gas in the variable volume cavity can be discharged to the outside through the gas outlet channel, and the gas inlet is closed by the one-way conducting piece 431. With the continuous movement of the piston rod 410, the variable volume chamber is alternately in two different working states, thereby realizing the air intake and air exhaust of the pump assembly 400.

In some embodiments of the present invention, as shown in fig. 2 and 3, to achieve better balancing effect, the two adjacent pump assemblies 400 are installed in opposite directions, and the positions of all the pump assemblies 400 in the pump body 200 can be reasonably distributed.

As shown in fig. 4, in some embodiments of the present invention, each of the weighted eccentrics 300 has a plurality of grooves 321 opened at the installation position of the bearing 411, and the grooves 321 are used to reduce the contact area between the weighted eccentric 300 and the bearing 411, so as to reduce the wear of the bearing 411 caused by the eccentric motion of the weighted eccentric 300, thereby prolonging the service life of the bearing 411.

In some embodiments of the present invention, in order to facilitate maintenance or repair of the pump assembly 400, each of the housings includes a housing 210 and a movable cover 220, the housing 210 is connected to the dual-axis motor 100, and the movable cover 220 is detachably connected to the housing 210 by a connection bolt. Before the pump assembly 400 can be serviced or repaired, the movable cover 220 is removed, and then the cover 440 and the valve plate 430 are removed in sequence.

In some embodiments of the present invention, in order to facilitate the connection of the multi-station micro air pump to other components, each of the housings 210 is provided with a mounting lug 230, and the mounting lug 230 is provided with a mounting hole 231.

In some embodiments of the present invention, in order to ensure the accurate installation of the sealing cover 440 and the valve plate 430, the sealing cover 440 is provided with a plurality of positioning posts, the valve plate 430 is provided with a plurality of positioning holes, and all the positioning posts and all the positioning holes are respectively arranged in a one-to-one correspondence.

In some embodiments of the utility model, as shown in fig. 1, the cover 440 is provided with an inlet nozzle 441 and an outlet nozzle 442, the inlet nozzle 441 and the outlet nozzle 442 being in communication with the inlet channel and the outlet channel, respectively. When vacuum pumping is needed, the air inlet nozzle 441 is used for being connected with a vacuum pumping pipe, and the air outlet nozzle 442 can be arranged by default; when inflation is required, the air outlet nozzle 442 is used for connecting an inflation tube, and the air inlet nozzle 441 can be set by default.

Further, the cover 440 is provided with two indication marks 443, the two indication marks 443 respectively corresponding to the inlet nozzle 441 and the outlet nozzle 442, so that a user can visually recognize the inlet nozzle 441 and the outlet nozzle 442.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. Miniature air pump of multistation, its characterized in that includes:

the double-shaft stretching motor (100) is provided with two rotating shafts (110), each rotating shaft (110) is synchronously connected with a counterweight eccentric wheel (300), and the counterweight directions of the two counterweight eccentric wheels (300) are opposite;

the pump body (200), its quantity is two, two the both sides at biax motor (100) are stretched in the pump body (200) are connected respectively, every the pump body (200) all are equipped with a plurality of pump subassemblies (400), every counter weight eccentric wheel (300) all are connected with all pump subassemblies (400) in the corresponding pump body (200).

2. The multi-station micro air pump according to claim 1, wherein: the installation directions of every two adjacent pump assemblies (400) are opposite.

3. The multi-station micro air pump according to claim 1, wherein: each pump assembly (400) is provided with a bearing (411), and all the bearings (411) are respectively sleeved on the corresponding counterweight eccentric wheels (300).

4. The multi-station micro air pump according to claim 3, wherein: each pump body comprises a shell and a plurality of pump assemblies (400), each pump assembly (400) comprises a piston rod (410), a cup (420), a valve plate (430) and a sealing cover (440), one end of the piston rod (410) is provided with the bearing (411), the other end of the piston rod (410) is connected with the cup (420), the packing cup (420) is connected with the valve plate (430) in a sealing mode, so that a variable-volume cavity is formed between the packing cup (420) and the valve plate (430), the shell, the valve plate (430) and the sealing cover (440) are sequentially connected, the valve plate (430) and the sealing cover (440) are jointly provided with an air inlet channel and an air outlet channel, the air inlet channel and the air outlet channel are respectively communicated with the variable volume cavity in a one-way, the air inlet channel is communicated towards the direction of the variable volume cavity, and the variable volume cavity is communicated towards the direction of the air outlet channel.

5. The multi-station micro air pump according to claim 4, wherein: the sealing cover (440) is provided with an air inlet nozzle (441) and an air outlet nozzle (442), and the air inlet nozzle (441) and the air outlet nozzle (442) are respectively communicated with the air inlet channel and the air outlet channel.

6. The multi-station micro air pump according to claim 5, wherein: the cover (440) is provided with two indicators (443), the two indicators (443) corresponding to the inlet nozzle (441) and the outlet nozzle (442), respectively.

7. The multi-station micro air pump according to claim 4, wherein: each shell comprises a shell frame (210) and a movable cover (220), the shell frame (210) is connected with the double-shaft extension motor (100), and the movable cover (220) is detachably connected to the shell frame (210).

8. The multi-station micro air pump according to claim 7, wherein: each shell frame (210) is provided with a mounting ear (230), and the mounting ears (230) are provided with mounting holes (231).

9. The multi-station micro air pump according to claim 4, wherein: the sealing cover (440) is provided with a plurality of positioning columns, the valve plate (430) is provided with a plurality of positioning holes, and all the positioning columns and all the positioning holes are arranged in a one-to-one correspondence mode respectively.

10. The multi-station micro air pump according to claim 1, wherein: each pump body (200) is provided with two pump assemblies (400).