CN202250732U

CN202250732U - Guide device capable of controlling airflow for micro-pump

Info

Publication number: CN202250732U
Application number: CN201120319191XU
Authority: CN
Inventors: 张坤林
Original assignee: 张坤林
Current assignee: Xiamen Keji Precision Equipment Co., Ltd.
Priority date: 2011-08-29
Filing date: 2011-08-29
Publication date: 2012-05-30
Anticipated expiration: 2021-08-29
Also published as: WO2013029532A1

Abstract

The utility model discloses a guide device capable of controlling airflow for a micro-pump, The guide device comprises an upper cover body, a lower cover body, air inlet valves and a head valve, wherein the upper cover body and the lower cover body are fixedly sealed and connected and form an air inlet cavity and an air outlet cavity independent from each other; the upper cover body is provided with an air inlet nozzle and an air outlet nozzle which are communicated with the air inlet cavity and the air outlet cavity; the lower cover body is provided with a plurality of air inlets and air outlets; an upper port of each air inlet is communicated with the air inlet cavity; an upper port of each air outlet is communicated with the air outlet cavity; a plurality of air inlet valves are connected to the plurality of air inlets respectively; the head valve is assembled between the upper cover body and the lower cover body and comprises a sealing piece; the sealing piece is provided with a plurality of through horseshoe grooves; elastic suspension pieces are formed on a part enclosed by the horseshoe grooves; and the plurality of suspension pieces are connected with the upper ports of the air outlets of the sealing cover in a one-to-tone correspondence mode under the action of the elasticity. The guide device in the utility model has the advantages that: the sealing performance is excellent, gas backflow is avoided, and even if the airflow is in a low-flow state, the gas backflow can be avoided.

Description

A kind of flow guide device that can control air-flow of micropump

Technical field

The utility model relates to a kind of flow guide device of micropump, relates in particular to a kind of flow guide device that can control air-flow of micropump.

Background technique

It is 02146425.1 that the Chinese patent database discloses application number on July 9th, 2003, and denomination of invention is the patent application of " diaphragm pump ".Diaphragm pump comprises:

The diaphragm portion main body of utilizing planar partly to be connected as a single entity at least one diaphragm portion that forms pump chamber;

Be arranged at the suction valve corresponding of the planar part of said diaphragm portion theme with each diaphragm portion; And

Be configured in a flat drain of the intimate central authorities of said diaphragm portion;

Said each membrane portions has drive portion respectively, moves up and down through making said drive portion, plays the effect of pump.

The expulsion valve of this diaphragm pump comprises that a circular valve block and is installed in the middle projection of circular valve block, and said projection is installed in the diaphragm portion main body, utilizes the edge deformation control of said circular valve block whether to discharge gas.Owing to be to utilize the edge deformation control of circular valve block whether to discharge gas, so sealability is not good, possibly realize backflow phenomenon.

The model utility content

The utility model provides a kind of flow guide device that can control air-flow of micropump, and it has overcome the existing deficiency of the flow guide device of traditional micropump in the background technique.

The technological scheme that is adopted that the utility model solves its technical problem is:

A kind of flow guide device that can control air-flow of micropump, it comprises:

One upper cover body (10) and a lower cover (20), the sealing of said upper cover body (10) and lower cover (20) are fixed together and constitute separate go into air cavity (50) and outlet chamber (60); Said upper cover body (10) is established air inlet nozzle (11) and the exhaust nozzle (12) of connecting air cavity (50) and outlet chamber (60) respectively; Said lower cover (20) is established a plurality of air intakes (21) and a plurality of air outlet (22), and said air intake (21) upper end-hole is connected into air cavity (50), and said air outlet (22) upper end-hole is connected outlet chamber (60);

A plurality of air inlet valves (30), they are connected to a plurality of air intakes (21); And

One people's head valve (40); It is installed between upper cover body (10) and the lower cover (20); And comprise a diaphragm seal (42); Said diaphragm seal (42) is established a plurality of horseshoe type grooves (44) that run through, and flexible unsettled (41) are with in partly constituting of said horseshoe type groove (44) encirclement, and said a plurality of unsettled (41) pick out gas port (22) upper end-hole at next corresponding sealing cover of elastic reaction.

Among one preferred embodiment: said air inlet valve (30) comprises that an elastic valve plate and is installed in the solid post at elastic valve plate center, and said solid post is fixed in air intake (21), and said elastic valve plate inserts gas port (21) lower end mouth in the elastic reaction lower sealing cover.

Among one preferred embodiment: end face is established ring wall on (13) under the said upper cover body (10); End face is established ring wall (23) on the said lower cover (20); The said interior formation outlet chamber (60) of ring wall (13) and the adaptive sealed butt joint of following ring wall (23) and its of going up, said people's head valve (40) is installed within the outlet chamber (60).

Among one preferred embodiment: also establish a plurality of footpaths bars (14) in the said upper cover body (10), the affixed ring wall (13) of going up in said footpath bar (14) exterior edge face, interior edge face is separated by; A plurality of spokes (43) are established at said people's head valve (40) diaphragm seal (42) back side, and said unsettled (41) are located between the adjacent spoke (43); Said diaphragm seal (42) is located at down within the ring wall (23), and said footpath bar (14) is pressed against on the spoke (43).

Among one preferred embodiment: be convexly equipped with a plurality of locating columns (24) on the said lower cover (20), said diaphragm seal (42) is established positioning hole (45), the adaptive connection locating column of said positioning hole (45) (24).

Among one preferred embodiment: socket and the inserting column of establishing mutual grafting between said upper cover body (10) and the lower cover (20).

The present technique scheme is compared with background technique, and it has following advantage:

1, the diaphragm seal of people's head valve is established the horseshoe type groove, and partly constituting of horseshoe type groove encirclement is with flexible unsettled, and unsettled picks out the gas port upper end-hole in the elastic reaction lower sealing cover; Then sealability is good; Avoid gas backstreaming,, also can avoid gas backstreaming even be in the low discharge state;

2. diaphragm seal is located at down within the ring wall, and the footpath bar is pressed against on the spoke, and easy to assembly, sealability is good, and is simple in structure, and cost is low;

3. be convexly equipped with a plurality of locating columns on the lower cover, diaphragm seal is established positioning hole, and the adaptive connection locating column of positioning hole is convenient to assembling, and assembly precision is high.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 has illustrated the exploded perspective view of the micropump of a preferred embodiment.

Fig. 2 has illustrated the generalized section of the micropump of a preferred embodiment.

Fig. 3 has illustrated the schematic representation of upper cover body of the micropump of a preferred embodiment.

Fig. 4 has illustrated the schematic representation of lower cover of the micropump of a preferred embodiment.

Fig. 5 has illustrated one of the schematic representation of people's head valve of the micropump of a preferred embodiment.

Fig. 6 illustrated a preferred embodiment micropump people's head valve schematic representation two.

Embodiment

Please refer to Fig. 1 to Fig. 6, a kind of micropump, it comprises that a valve seat 70, is installed in motor unit 81, under the valve seat 70 and is installed in driving mechanism 82 in the valve seat 70, by an elastic material diaphragm cell 90 and the flow guide device processed of plastic cement for example.Said diaphragm cell 90 is installed in the valve seat 10, and is formed with a plurality of openings gasbag chamber 91 up.Said motor unit 81 driving mechanism 82 that is in transmission connection, said driving mechanism 82 connects diaphragm cells 90, can drive diaphragm cell 90 activities, can compress or uphold a certain gasbag chamber 91.

Said flow guide device comprises a upper cover body 10) lower cover 20, with air inlet valve 30 and people's head valve 40 of number such as gasbag chamber 91.Said lower cover 20 is installed on the valve seat 70 and sealing cover is connected on the opening of the gasbag chamber 91 of diaphragm cell 90.

20 sealings are fixed together and constitute separate go into air cavity 50 and outlet chamber 60 said upper cover body 10 with lower cover.Said upper cover body 10 is established the air inlet nozzle 11 and exhaust nozzle 12 of connecting air cavity 50 and outlet chamber 60 respectively.Said lower cover 20 be provided with the air intake 21 of gasbag chamber 91 numbers such as grade and with the air outlet 22 of numbers such as gasbag chamber 91; Said a plurality of air intake 21 lower end mouth are connected a plurality of gasbag chambers 91 respectively, and said air intake 21 upper end-hole are connected into air cavity 50; Said a plurality of air outlet 22 lower end mouth are connected a plurality of gasbag chambers 91 respectively, and said air outlet 22 upper end-hole are connected outlet chamber 60.Among the present embodiment, establish the socket and the inserting column of mutual grafting between said upper cover body 10 and the lower cover 20, and, also upper cover body, lower cover, valve seat are linked together through screw 15.

Said air inlet valve 30 comprises that an elastic valve plate and is installed in the solid post at elastic valve plate center; Said solid post is fixed in air intake 21; Said elastic valve plate inserts gas port 21 lower end mouth in the elastic reaction lower sealing cover, and the pressure difference that then ought go into air cavity 50 and corresponding gasbag chamber 91 is greater than preset pressure, during greater than elastic force; Elastic valve plate is opened, and gas charges in the corresponding gasbag chamber 91 from going into air cavity 50.

Said people's head valve 40 is installed between upper cover body 10 and the lower cover 20; And establish a plurality of flexible unsettled 41; Said a plurality of unsettled 41 picks out gas port 22 upper end-hole at next corresponding sealing cover of elastic reaction, then when the pressure difference of gasbag chamber 91 and outlet chamber 60 greater than preset pressure, during greater than elastic force; Be opened for unsettled 41, gas charges in the outlet chamber 60 from gasbag chamber 91.

Among the present embodiment, end face is established ring wall 13 under the said upper cover body 10.End face is established ring wall 23 on the said lower cover 20, and among the present embodiment, port is positioned within the following ring wall 23 on the said air outlet 22.Said ring wall 13 and following ring wall 23 adaptive sealed butt joint and its interior formation outlet chamber 60 gone up is separated out air cavity 60 and goes into air cavity 50 through last ring wall 13 and following ring wall 23.Among the present embodiment, also establish a plurality of footpaths bar 14 in the said upper cover body 10, the affixed ring wall 13 of going up in bar 14 exterior edge faces, said footpath, interior edge face is separated by.Said people's head valve 40 is installed within the outlet chamber 60; And comprise a diaphragm seal 42; Said diaphragm seal 42 is established the horseshoe type groove 44 that runs through with gasbag chamber 91 numbers such as grade, and said horseshoe type groove 44 for example is an arc, said horseshoe type groove 44 encirclements partly be above-mentioned unsettled 41; And a plurality of spokes 43 are established at diaphragm seal 42 back sides, and said unsettled 41 is located between adjacent two spokes 43; Said diaphragm seal 42 is located at down within the ring wall 23, and said footpath bar 14 is pressed against on the spoke 43, and said unsettled 41 when being opened, then gas is discharged through the exhaust nozzle 12 of air outlet 21, adjacent footpath bar 14 inner apart sections, upper cover body 10.

In order to locate people's head valve 40, best, on said lower cover 20, be convexly equipped with a plurality of locating columns 24, establish positioning hole 45 at said diaphragm seal 42, said positioning hole 45 and 24 adaptive connections of locating column.

The flow guide device of present embodiment, even also can be than avoiding backflow phenomenon to occur when low discharge, and, forming people's head valves for a plurality of unsettled, the single component district is divided into and independently passes in and out air chamber, the independent air chamber current stabilization of increase and noise reduction effect.

The above; Be merely the utility model preferred embodiment; So can not limit the scope that the utility model is implemented according to this, the equivalence of promptly doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.

Claims

1. the flow guide device that can control air-flow of a micropump, it is characterized in that: it comprises:

2. the flow guide device that can control air-flow of a kind of micropump according to claim 1; It is characterized in that: said air inlet valve (30) comprises that an elastic valve plate and is installed in the solid post at elastic valve plate center; Said solid post is fixed in air intake (21), and said elastic valve plate inserts gas port (21) lower end mouth in the elastic reaction lower sealing cover.

3. the flow guide device that can control air-flow of a kind of micropump according to claim 1 and 2; It is characterized in that: end face is established ring wall on (13) under the said upper cover body (10); End face is established ring wall (23) on the said lower cover (20); The said interior formation outlet chamber (60) of ring wall (13) and the adaptive sealed butt joint of following ring wall (23) and its of going up, said people's head valve (40) is installed within the outlet chamber (60).

4. the flow guide device that can control air-flow of a kind of micropump according to claim 3 is characterized in that: also establish a plurality of footpaths bars (14) in the said upper cover body (10), and the affixed ring wall (13) of going up in said footpath bar (14) exterior edge face, interior edge face is separated by; A plurality of spokes (43) are established at said people's head valve (40) diaphragm seal (42) back side, and said unsettled (41) are located between the adjacent spoke (43); Said diaphragm seal (42) is located at down within the ring wall (23), and said footpath bar (14) is pressed against on the spoke (43).

5. the flow guide device that can control air-flow of a kind of micropump according to claim 4; It is characterized in that: be convexly equipped with a plurality of locating columns (24) on the said lower cover (20); Said diaphragm seal (42) is established positioning hole (45), the adaptive connection locating column of said positioning hole (45) (24).

6. the flow guide device that can control air-flow of a kind of micropump according to claim 4 is characterized in that: socket and the inserting column of establishing mutual grafting between said upper cover body (10) and the lower cover (20).