KR101138133B1 - Driving unit for diaphragm pump and diaphragm pump using the same - Google Patents

Abstract

Disclosed are a diaphragm pump driving unit and a diaphragm pump using the same. The diaphragm pump driving unit of the present invention includes a hub having a shaft insertion hole formed in a central portion thereof so that an eccentric shaft coupled to be biased with respect to a drive shaft of a motor can be inserted therein, and four fitting grooves recessed along a side circumference thereof; Four connectors each including a fitting portion fitted to be rotatable relative to the fitting groove, a connecting rod extending from the fitting portion, and a head portion coupled to one side of the diaphragm; And four head caps respectively coupled to the head part to cover the other side of the diaphragm. According to the present invention, it is possible to provide a diaphragm pump driving unit and a diaphragm pump using the same, as well as allowing the correct amount of air to flow in and out, as well as the ease of assembly and disassembly.

Description

Diaphragm pump driving unit and diaphragm pump using the same {{DRIVING UNIT FOR DIAPHRAGM PUMP AND DIAPHRAGM PUMP USING THE SAME}

The present invention relates to a diaphragm pump driving unit and a diaphragm pump using the same, and more particularly, the diaphragm can be easily maintained by improving the convenience of assembling and disassembling, as well as allowing an accurate amount of air to flow in and out. It relates to a pump drive unit and a diaphragm pump using the same.

Diaphragm Pump (Diaphragm Pump) is a type of volumetric pump that draws in and discharges fluid by the movement of diaphragm. That is, the diaphragm pump operates to inhale and discharge the fluid as the diaphragm vibrates and the pressure of the pump chamber changes. The diaphragm pump is used to operate the pump without the direct contact with the fluid to be applied. Say.

The conventional diaphragm pump has a structure in which an upper housing having an annular rib formed on an inner circumferential surface thereof and a lower housing to which a motor shaft is coupled are coupled to each other, and a valve support having suction and discharge holes formed between the upper housing and the lower housing. In addition, the space between the outer side of the annular rib and the valve support forms an inlet chamber in which fluid to be sucked remains, and the space between the inner side of the annular rib and the valve support forms an outlet chamber through which fluid is discharged, and the valve support and the lower portion. Between the housings are formed a plurality of pump chambers in which a pressure change occurs to suck and discharge the fluid.

In addition, an inlet valve and an outlet valve for opening and closing the suction and discharge holes are respectively supported by the valve support, and a motor shaft is supported by the lower housing. The eccentric bush is press-fitted into the shaft and the bearing is coupled to the outer periphery of the bush. Supported by the lower housing. In addition, the lower housing is formed with a plurality of openings in communication with each pump chamber, each opening is provided with a movable member and a fixed member fixed to the movable member is oscillated up and down in conjunction with the bearing eccentrically rotated. And the edge between the moving member and the fixing member with the diaphragm is interposed between the valve support and the lower housing is fixed.

According to this configuration, the conventional diaphragm pump vibrates vertically and vertically with each moving member by an eccentrically rotating bearing, and the diaphragm of each part is sequentially vibrated up and down while the pressure in each pump chamber decreases or increases. Inlet and outlet valves are operated in sequence to pump fluid.

However, the conventional diaphragm pump has a problem that it is difficult to inflow and discharge the fluid of the desired amount according to the difficulty of precisely adjusting the rotation amount of the eccentric rotating bearing.

In addition, the conventional diaphragm pump has a number of very complicated structures, so it is difficult to assemble and disassemble, and thus there is a problem in that maintenance is difficult.

The technical problem of the present invention is to provide a diaphragm pump driving unit and a diaphragm pump using the same, which are easy to maintain by being able to inflow and outflow of an accurate amount of air, as well as the convenience of assembly and disassembly.

The technical problem to be achieved by the present invention is not limited to the technical problem mentioned above, and other technical problems not mentioned above may be clearly understood by those skilled in the art from the following description. There will be.

The technical problem is, according to the present invention, the shaft insertion hole is formed in the center portion so that the eccentric shaft coupled to the drive shaft of the motor is inserted into the four hub is formed recessed along the side circumference; Four connectors each including a fitting portion fitted to be rotatable relative to the fitting groove, a connecting rod extending from the fitting portion, and a head portion coupled to one side of the diaphragm; And four head caps respectively coupled to the head part to cover the other side of the diaphragm.

Each of the fitting grooves may be partitioned by a pair of partitions provided along the longitudinal direction of the hub.

The hub may include a first cover provided at a lower side of the hub to be integrally coupled to the lower end of the partition wall.

In the first cover, a first protrusion insertion hole formed through the first cover at a position where the fitting groove is formed may be formed through.

The fitting portion, an additional portion provided to have a thickness greater than the thickness of the connecting rod; And a first insertion protrusion protruding downward from the lower end of the toothing portion and inserted into the first protrusion insertion hole.

The pair of partition walls may be provided to be spaced apart from each other on the basis of the additional portion so that the connector can be rotated within a predetermined range.

The first cover may include a first protrusion through which a first communication hole communicating with the first protrusion insertion hole is formed, and protruded from a lower side to accommodate one end of the first insertion protrusion; And a second protrusion formed through the second communication hole communicating with the shaft insertion hole and protruding from the lower surface such that one end of the eccentric shaft is inserted therein.

The hub may include a cover fitting protrusion formed to protrude in an upward direction of the pair of partition walls; And a second cover through which the fitting protrusion insertion hole into which the cover fitting protrusion is inserted is formed.

The fitting portion may further include a second insertion protrusion protruding upward from the upper end of the toothing portion, and the second cover may have a second protrusion insertion hole into which the second insertion protrusion is inserted.

The second cover may include a third protrusion through which a third communication hole communicating with the second protrusion insertion hole is formed, and protruded from an upper surface to accommodate one end of the second insertion protrusion; And a fourth protrusion formed through the fourth communication hole communicating with the shaft insertion hole and protruding from the upper surface to insert one end of the eccentric shaft.

The connecting rod may include a reinforcing part provided adjacent to one side of the head part; And an extension part provided stepped from the reinforcement part and extending toward the fitting part side.

The head portion, at least one head insertion protrusion inserted into the head coupling hole formed through the diaphragm; And a second cap fastening hole communicating with the first cap fastening hole formed through the diaphragm.

The head cap may include a third cap fastening hole into which the head insertion protrusion extending through the diaphragm is inserted; And a fourth cap fastening hole communicating with the first cap fastening hole and the second cap fastening hole.

The object is, according to the present invention, a motor including a drive shaft; A shaft insertion hole is formed in the center area so that the eccentric shaft which is biased with respect to the drive shaft can be inserted, and a hub having four fitting grooves recessed along the side circumference, and the fitting that can be rotated relative to the fitting groove. Four connectors each including a portion, a connecting rod extending from the fitting portion, a head portion coupled to one side of the diaphragm, and four heads respectively coupled to the head portion to cover the other side of the diaphragm. A diaphragm pump drive unit including a cap; A housing in which the diaphragm pump driving unit is accommodated and four through holes are respectively formed in a position adjacent to the head part; And four housing covers provided to cover the through holes, respectively.

An inner side surface of the housing cover may have a recessed recess having a size substantially the same as that of the through hole.

The diaphragm may include an intake valve provided to allow air sucked from the inner space of the housing to flow into the concave groove; And an exhaust valve disposed adjacent to the intake valve and provided to allow air received in the concave groove to flow out to an external outlet hole formed in an upper portion of the housing.

The diaphragm is formed of an elastic material, and each of the intake valve and the exhaust valve, the ventilation slit formed by cutting a portion of the diaphragm; And it may include a recovery unit provided in the ventilation slit.

The restoration unit, the support provided on the lower end; And an extension part extending from the support part and provided to have a width greater than the width of the support part.

The housing cover may include an intake groove formed to communicate with the concave groove at a position where the intake valve is disposed; And an exhaust hole formed to communicate with the concave groove at a position where the exhaust valve is disposed.

In the housing, a horizontal hole may be formed to interconnect the exhaust hole and the external outlet hole so that air received in the concave groove may flow out to the external outlet hole.

According to the present invention, as well as the inlet and outlet of the correct amount of air by the hub is formed in the fitting groove, the connector fitted in the fitting groove, and the head cap for fixing the diaphragm together with the connector, Improved convenience allows for easy maintenance of diaphragm pump drive units.

1 is a combined perspective view of a diaphragm pump according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the diaphragm pump of FIG. 1. FIG.
3 is a cross-sectional view of the diaphragm pump of FIG. 1.
4 is a plan view of a diaphragm pump driving unit of the diaphragm pump of FIG. 1.
5 is a perspective view of a hub of the diaphragm pump of FIG. 1.
6 is a perspective view of the connector of the diaphragm pump of FIG. 1.
FIG. 7 is a perspective view of the diaphragm of the diaphragm pump of FIG. 1. FIG.
8 to 11 is a schematic diagram showing the operating principle of the diaphragm pump of FIG.
12 is a cross-sectional view of FIG. 2 taken along line AA showing a principle of operating the intake valve.
FIG. 13 is a cross-sectional view of FIG. 2 taken along line BB illustrating a principle of operating the exhaust valve.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of already known functions or configurations will be omitted to clarify the gist of the present invention.

1 is a combined perspective view of a diaphragm pump according to an embodiment of the present invention, Figure 2 is an exploded perspective view of the diaphragm pump of Figure 1, Figure 3 is a cross-sectional view of the diaphragm pump of Figure 1, Figure 4 1 is a plan view of a diaphragm pump driving unit of the diaphragm pump, FIG. 5 is a perspective view of a hub of the diaphragm pump of FIG. 1, FIG. 6 is a perspective view of a connector of the diaphragm pump of FIG. 1, and FIG. 7 is FIG. 1. 8 to 11 is a schematic diagram showing the operating principle of the diaphragm pump of Figure 1, Figure 12 is a cross-sectional view of Figure 2 along the line AA showing the principle of operating the intake valve. FIG. 13 is a cross-sectional view of FIG. 2 taken along line BB illustrating a principle of operating the exhaust valve.

Referring to these drawings, the diaphragm pump 10 according to an embodiment of the present invention is a diaphragm coupled to the motor 100 including the drive shaft 110 and the drive shaft 110 of the motor 100 to be deflected. Pump driving unit 200 (hereinafter referred to as "pump driving unit 200"), the diaphragm 300 is fixed to the pump driving unit 200, and the housing housing the pump driving unit 200 ( 400 and a housing cover 500 provided to cover the through hole 400a formed in the housing 400.

The motor 100 provides power to rotate the pump driving unit 200, and includes a driving shaft 110 that is biased with respect to the eccentric shaft 120 coupled to the pump driving unit 200. In the present embodiment, the motor 100 may be provided as a general hydraulic motor, pneumatic motor, stepping motor, servo motor, and the like, and a detailed description thereof will be omitted.

The pump driving unit 200 allows the air in the housing 400 to flow into the space formed between the housing cover 500 and the recess 500a through the power transmitted from the motor 100, or the housing cover. The air accommodated in the space formed between the 500 and the concave groove 500a is configured to be discharged through the external outlet hole 410a.

The pump driving unit 200 has a shaft insertion hole 210a through which the eccentric shaft 120 is inserted, and a hub 210 having four fitting grooves 211 formed along the side circumference thereof, and a fitting groove 211. And four head caps 230 fixed to the diaphragm 300 are respectively coupled to the four connectors 220 that are fitted to each other and the head portion 223 of the connector 220.

The hub 210 has a shaft insertion hole 210a through which the eccentric shaft 120 is inserted, is formed through the central region, and four fitting grooves 211 spaced apart from each other at regular intervals along the side circumference are recessed. The rotational movement generated by the rotation of the driving shaft 110 of the 100 is the horizontal movement of the diaphragm 300 (the movement in the + X or -X direction of FIGS. 8 to 11 and the + Y or -Y direction). Exercise, the same as below).

The hub 210 has four fitting grooves 211 provided along the side circumference, a first cover 214 covering the lower side of the fitting groove 211, and a pair of partition walls forming the fitting grooves 211 ( A cover fitting protrusion 215 protruding from the upper end portion 212 and 213, and a second cover 216 coupled to the cover fitting protrusion 215 and covering the upper side of the fitting groove 211.

The fitting groove 211 is a space recessed from the surface of the hub 210 so as to be partitioned by a pair of partitions 212 and 213 spaced apart from each other at regular intervals. Here, the partitions 212 and 213 refer to a structure provided with a total of four spaced apart from each other at regular intervals along the side circumference of the hub 210 so that four fitting grooves 211 may be formed.

The partitions 212 and 213 are respectively provided such that the fitting groove 211 has a size slightly larger than that of the connector portion 221a of the connector 220 so that the connector 220 to be described later can exercise within a predetermined range. That is, it is provided to be spaced apart from each other on the basis of the gushing portion 221a of the connector 220 (see FIG. 4).

The first cover 214 is configured to be provided under the hub 210 to cover the lower end of the fitting groove 211, that is, the lower end of the partitions 212 and 213. The first cover 214 may include a first protrusion 214b into which one end of the first insertion protrusion 221b of the connector 220 is inserted, and a second protrusion (not shown) into which one end of the eccentric shaft 120 is inserted. Include.

The first protrusion 214b is provided to protrude from the lower surface of the first cover 214 so that one end of the first insertion protrusion 221b of the connector 220 is inserted. To this end, a first communication hole (not shown) communicating with the first protrusion insertion hole 214a of the first cover 214 is formed through the first protrusion 214b.

That is, the first insertion protrusion 221b of the connector 220 is inserted along the first communication hole of the first protrusion insertion hole 214a and the first protrusion 214b of the first cover 214, thereby driving the pump driving unit ( 200 may be temporarily fixed during assembly. Similarly, the eccentric shaft 120 that is biasedly coupled to the drive shaft 110 of the motor 100 penetrates through the second communication hole (not shown) and the hub 210 of the second protrusion of the first cover 214. By being inserted into the shaft insertion hole (210a) it can be temporarily fixed during assembly of the pump drive unit (200).

The cover fitting protrusion 215 is configured to protrude from the upper side of the partition walls 212 and 213 so that the second cover 216 described later can be easily coupled to the upper end of the hub 210. As described above, the fitting grooves 211 of the hub 210 are a total of four, and the partitions 212 and 213 for partitioning the fitting grooves 211 are provided in total of four bar fitting protrusion 215 is A total of four are provided, one for each pair of partitions 212 and 213.

The second cover 216 is provided to cover the upper end of the hub 210 to constrain the upper end of the connector 220 to fix the connector 220 together with the first cover 214.

The second cover 216 may include the third protrusion 216b protruding from the upper surface to insert one end of the second insertion protrusion 221c of the fitting portion 221 of the connector 220 and the eccentric shaft 120. And a fourth protrusion 216d formed at the central region so that one end thereof is inserted. In addition, the second cover 216 is formed with a fitting protrusion insertion hole 216f through which the cover fitting protrusion 215 described above is inserted.

The third protrusion 216b is provided to protrude from the upper surface of the second cover 216 so that one end of the second insertion protrusion 221c of the connector 220 is inserted. To this end, a third communication hole 216c communicating with the second protrusion insertion hole 216a of the second cover 216 is formed through the third protrusion 216b. That is, the second insertion protrusion 221c protruding upward of the fitting portion 221 of the connector 220 may include the third projection insertion hole 216a and the third projection third protrusion 216b of the second cover 216. By being inserted along the communication hole (216c) it can be temporarily fixed during assembly of the pump drive unit (200).

Similarly, the eccentric shaft 120 biasedly coupled to the drive shaft 110 of the motor 100 includes a shaft insertion hole 210a penetrating through the hub 210 and a fourth protrusion 216d of the second cover 216. By being inserted into the fourth communication hole 216e of the pump driving unit 200 can be temporarily fixed during assembly. In addition, the second cover 216 may be fixed to the upper end of the hub 210 by inserting and fixing four cover fitting protrusions 215 respectively along the fitting protrusion insertion hole 216f.

As such, the pump driving unit 200 of the present embodiment is provided so that the components can be simply fitted in sequence without welding the components, thereby facilitating the assembly and disassembly, whereby some of the components are broken. Even if it is possible, it can be easily replaced to facilitate the maintenance.

On the other hand, the connector 220 is fitted into the fitting groove 211 of the hub 210 is rotated by a predetermined angle in accordance with the movement of the eccentric shaft 120, the diaphragm 300 is fixed to this coupled to the horizontal direction It is a configuration that allows you to exercise.

The connector 220 includes a fitting portion 221 fitted to be rotatable relative to the fitting groove 211, a head portion 223 to which one side of the diaphragm 300 is coupled, a fitting portion 221, and a head. And a connecting rod 222 interconnecting the portions 223.

The fitting portion 221 is a portion which is fitted to be rotatable relative to the fitting groove 211, the protruding portion 221a provided at one end, and the protruding portion provided to protrude downward from the lower end of the protruding portion 221a The first insertion protrusion 221b and the second insertion protrusion 221c are provided to protrude upward from the upper end of the toothing portion 221a.

The additional part 221a is configured to be stepped at one end of the connecting rod 222 to have a relatively larger thickness than the connecting rod 222. The gushing portion 221a is fitted into the fitting groove 211 and then rotates relative to the fitting groove 211 according to the movement of the eccentric shaft 120 so that the connector 220 integrally connected thereto is fitted into the fitting groove 211. You will be able to interact with each other.

As described above, the pair of partitions 212 and 213 partitioning the fitting grooves 211 are provided with the grooves 211 spaced apart from each other at regular intervals such that the fitting grooves 211 have a larger width as compared with the thickness of the glands 221a. The part 221a rotates relative to the fitting groove 211 only within a predetermined range.

The connecting rod 222 connects the extremity part 221a and the head part 223, and is provided with a step from the reinforcement part 222a provided adjacent to one side of the head part 223 and the reinforcement part 222a. The extension part 222b provided to be extended to the fitting part 221 side is included.

The reinforcement part 222a is provided at one end of the extension part 222b to have a relatively large thickness compared to the extension part 222b. The reinforcement part 222a serves to reinforce the connecting rod 222, thereby ensuring a certain durability of the connecting rod 222. The extension part 222b refers to a thin plate-shaped member connecting between the fitting part 221 and the reinforcing part 222a.

The head portion 223 is configured to have a circular cross-sectional shape at one end of the reinforcing portion 222a. The head portion 223 penetrates through the center portion so that the pair of head insertion protrusions 223a provided on the left and right sides thereof and the bolt B fastened through the diaphragm 300 and the head cap 230 are inserted. The second cap fastening hole 223b is formed.

The head insertion protrusion 223a is inserted along the head coupling hole 300b formed through the diaphragm 300 and then fitted into the third cap fastening hole 230a formed in the head cap 230, thereby diaphragm 300. ) Is a part to be fixed between the connector 220 and the head cap 230.

The second cap fastening hole 223b communicates with the first cap fastening hole 300a formed through the diaphragm 300 and the fourth cap fastening hole 230b formed through the head cap 230. It is provided to provide a path for the bolt (B) is inserted. That is, after the diaphragm 300 is disposed between the connector 220 and the head cap 230, the first cap fastening hole 300a, the second cap fastening hole 223b, and the fourth cap fastening hole 230b are disposed. By inserting and fixing the bolt (B) along the diaphragm 300 is to be fixed between the connector 220 and the head cap 230.

On the other hand, the diaphragm 300 by changing the volume between the housing 400 and the recessed groove (500a) of the housing cover 500 to allow the air received in the interior of the housing 400 to flow into the recessed groove (500a) side, The air accommodated in the concave groove 500a is configured to flow out. The diaphragm 300 is made of an elastic material having elasticity, and thus the shape of the diaphragm 300 may change in response to the movement of the connector 220.

The diaphragm 300 includes an intake valve 310 for introducing air into the concave groove 500a and an exhaust valve 320 provided to allow air received in the concave groove to flow out.

The intake valve 310 is configured to be provided at one side of the diaphragm 300 so that air received in the inner space of the housing 400 can flow into the concave groove 500a. The intake valve 310 includes a vent slit 311 formed by cutting a portion of the diaphragm 300, and a restorer 312 provided in the vent slit 311.

Ventilation slit 311 is a configuration that is provided so that the air accommodated in the inner space of the housing 400 is primarily introduced into the concave groove (500a). Ventilation slit 311 is provided to have a constant arc shape, as shown in FIG.

Restoration unit 312 is provided to be deformed to the concave groove (500a) side according to the pneumatic pressure of the air flowing into the concave groove (500a) through the ventilation slit (311) air received in the inner space of the housing 400 is concave groove (500a) ) Is configured to be introduced to the secondary side. That is, the air contained in the inner space of the housing 400 is introduced while passing through the ventilation slit 311, in this case, the restoration unit 312 is a predetermined angle toward the concave groove (500a) by the pneumatic pressure of the incoming air By bending and deforming, it is possible to increase the amount of inflowing air.

The restoration part 312 includes a support part 312a provided at the lower end and an extension part 312b extending upward from the support part 312a.

The support part 312a is provided to support the lower end of the expansion part 312b that is bent and deformed toward the concave groove 500a by the pneumatic pressure of the air introduced from the inside of the housing 400, and the expansion part 312b is a ventilation slit. It is provided to have a shape substantially the same as the shape of the 311 is deformed by the pneumatic pressure of the air flowing from the inside of the housing 400 or is a configuration that is elastically restored to the original position when there is no more inflow of air.

That is, when the air is introduced from the inside of the housing 400, the expansion part 312b, which is supported by the support part 312a, is bent and deformed toward the concave groove 500a according to the pneumatic pressure of the inflowed air. When air does not flow in, it is restored to its original state according to the characteristics of the diaphragm 300 provided with an elastic material. In addition, since the restoration part 312 is provided such that one side thereof is in contact with the outer surface of the housing 400, air may flow into the concave groove 500a from the inside of the housing 400, but in the concave groove 500a. By preventing the received air from leaking back into the housing 400, it serves as a kind of check valve.

2 and 12, a process of driving the intake valve 310 is as follows.

In FIG. 2, the diaphragm 300 and the housing cover 500 disposed in the + X and + Y directions are disassembled, and the diaphragm 300 and the housing cover disposed in the −X and −Y directions are disassembled. The 500 is provided to have a structure symmetrical with the diaphragm 300 and the housing cover 500 disposed in the + X and + Y directions. This is the same also in the case of the intake hole (H) formed through the upper end of the housing 400 to be described later.

First, when the connector 220 in the left direction (-Y direction, see FIG. 2) shown in FIG. 12 is moved in the right direction (+ Y direction, see FIG. 2), the shape of the diaphragm 300 is changed and the housing cover is changed. The volume between the 500 and the diaphragm 300 increases. Accordingly, the air introduced from the lower side of the housing 400 and accommodated in the housing 400 moves along the intake hole H formed through the upper end of the housing 400, and then the intake valve 310 and the housing cover. It is introduced into the recess 500a side of the housing cover 500 through the intake groove 500b of 500. At this time, the expansion portion 312b of the intake valve 310 is deformed by bending the inlet groove 500b side of the housing cover 500 to increase the amount of air introduced into the concave groove 500a.

On the other hand, the exhaust valve 320 is configured to be provided on one side of the diaphragm 300 adjacent to the intake valve 310 so that the air received in the recess 500a can flow out. The exhaust valve 320 includes a ventilation slit 321 formed by cutting a part of the diaphragm 300, and a restoration unit 322 provided in the ventilation slit 321. In addition, the restoration unit 322 includes a support part 322a provided at the lower end and an extension part 322b extending upward from the support part 322a.

Expansion portion 322b is provided so that one side thereof is in contact with the outer surface of the housing cover 500, the air accommodated in the concave groove (500a) can be leaked to the outside, the outside air flows into the concave groove (500a) side By doing so, it acts as a check valve.

In addition, the matters concerning the ventilation slit 321, the support part 322a, and the expansion part 322b are the matters concerning the ventilation slit 311, the support part 312a, and the expansion part 312b of the intake valve 310 mentioned above. The same description is omitted since it is the same.

2 and 13, a process of driving the exhaust valve 320 is as follows.

First, when the connector 220 in the right direction (+ Y direction, see FIG. 2) shown in FIG. 13 moves in the right direction (+ Y direction, see FIG. 2), the shape of the diaphragm 300 is changed and the housing cover is changed. Volume between the 500 and the diaphragm 300 is reduced. Accordingly, the air is accommodated in the concave groove 500a of the housing cover 500, and the air passes through the exhaust hole 500c of the housing cover 500 and the exhaust valve 320, and an external outlet part provided at the upper end of the housing 400. After moving along the horizontal hole 410b formed through the 410, the liquid is discharged to the outside along the outer outlet hole 410a extending in a direction orthogonal to the horizontal hole 410b. At this time, the expansion part 322b of the exhaust valve 320 is bent and deformed toward the horizontal hole 410b of the external outlet part 410 to increase the amount of air introduced into the horizontal hole 410b.

On the other hand, the housing 400 is a configuration in which a receiving space in which the pump drive unit 200 is accommodated is formed. An outer outlet portion 410 (see FIG. 3) is provided at an upper end of the housing 400, and a pair of horizontal holes 410b and 410c are formed in the outer outlet portion 410 in a direction crossing each other. The external outlet holes 410a communicating with the horizontal holes 410b and 410c are formed to penetrate in the vertical direction.

The air flowing from the concave groove 500a is discharged to the external outlet hole 410a through the horizontal holes 410b and 410c formed in the external outlet part 410, and the air is supplied to an external device (not shown) to provide external air. It serves as a power source for driving the device.

On the other hand, the housing cover 500 is a configuration provided to cover the through hole 400a formed to penetrate the side of the housing 400.

The housing cover 500 has a concave groove 500a formed to have substantially the same size as the through hole 400a on the inner side thereof, and the concave groove 500a at a position where the intake valve 310 is provided. The intake groove 500b is formed, and the exhaust hole 500c is formed to communicate with the concave groove 500a at the position where the exhaust valve 320 is provided.

The concave groove 500a is configured to be recessed from an inner surface of the housing cover 500 so as to first store air received in the interior of the housing 400 and then supply it back to the outside, and the intake groove 500b is provided in the housing. The internal space of the housing 400 and the concave groove 500a communicate with each other so that air introduced from the inside of the 400 may move toward the concave groove 500a, and the exhaust hole 500c is the concave groove 500a. The concave groove 500a and the horizontal holes 410b and 410c communicate with each other so that the air accommodated therein may be discharged to the outside through the horizontal holes 410b and 410c and the outer outflow hole 410a.

Now, the driving principle of the diaphragm pump 10 according to the present embodiment will be described in detail.

As shown in FIG. 8, first, when power is supplied through the terminal 100a of the motor 100, the driving shaft 110 rotates. When the driving shaft 110 rotates, the eccentric shaft 120 coupled thereto moves. Done. However, as shown in FIG. 3, the eccentric shaft 120 is coupled to be deflected with respect to the drive shaft 110 of the motor 100, and the movement of the eccentric shaft 120 is the drive shaft 110 of the motor 100. Rather than a rotational motion based on the same axis as the reference axis), the hub 210 is an eccentric motion with respect to the center axis of the drive shaft 110 to draw a large circle based on the center axis of the drive shaft 110 of the motor 100.

As such, when the hub 210 is eccentric, the connector 220 fitted in the fitting groove 211 of the hub 210 rotates relative to the fitting groove 211, and thus the diaphragm 300 is rotated. The volume of the space formed between the diaphragm 300 and the concave groove 500a is changed.

That is, as shown in FIGS. 8 and 9, when the hub 210 rotates from 0 ° to 90 °, the hub 210 is disposed in the left direction (-X direction in FIG. 8, the same below) of the diaphragm pump 10. The connector 220 is inclined in an upward direction (the same as the + Y direction in FIG. 8, hereinafter), and accordingly, a space S1 formed between the left diaphragm 300 and the concave groove 500a in the left direction. The deformation of the volume decreases.

Similarly, the connector 220 provided in the upper direction of the diaphragm pump 10 is inclined in the right direction (+ X direction in FIG. 8, hereinafter same), and accordingly, the upper diaphragm 300 and the upper side are inclined. Deformation in which the volume of the space S2 formed between the concave grooves 500a in the direction increases is caused.

In the same manner, the connector 220 provided in the right direction of the diaphragm pump 10 performs an inclined upward movement, and is provided in the lower direction of the diaphragm pump 10 (in the -Y direction of FIG. 8, hereinafter same). Since the connector 220 is inclined in the right direction, the volume of the space S3 formed between the right diaphragm 300 and the concave groove 500a in the right direction increases, and the lower diaphragm 300 ) And the volume of the space (S4) formed between the recessed groove (500a) in the downward direction is to be reduced.

According to the deformation of each of the spaces S1, S2, S3, and S4, the air accommodated in some of the spaces S1 and S4 flows out to the outside, and the air introduced from the housing 400 into the other partial spaces S2 and S4. It can be accepted.

That is, as illustrated in FIGS. 2, 8, and 9, the air received in the interior of the housing 400 is moved to the concave groove 500a through the intake valve 310 and the intake groove 500b. The air stored in the space S2 and stored in the other space S1 flows out along the exhaust hole 500c formed to communicate with the concave groove 500a, and then passes through the exhaust valve 320 to the horizontal hole 410b. Inflow to the outside, by being moved along the external outflow hole (410a) through the horizontal hole (410b) will be outflow.

When the hub 210 rotates from 90 ° to 180 °, when the hub 210 rotates from 180 ° to 270 °, and when rotates from 270 ° to 0 °, the volume change of the space S1, S2, S3, S4, Accordingly, the matters related to the inflow and outflow of air are similar to those described above, and thus a detailed description thereof will be omitted.

The pump driving unit 200 and the diaphragm pump 10 using the same according to the present embodiment have an advantage of being easy to maintain and maintain, as well as allowing an accurate amount of air to flow in and out, as well as ease of assembly and disassembly.

While specific embodiments of the invention have been described and illustrated above, it is to be understood that the invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the invention. It is self-evident to those who have. Therefore, such modifications or variations are not to be understood individually from the technical spirit or point of view of the present invention, the modified embodiments will belong to the claims of the present invention.

10: diaphragm pump 100: motor
200: diaphragm pump drive unit 300: diaphragm
400 housing 500 housing cover

Claims (20)

A hub having a shaft insertion hole formed at a center thereof so that the eccentric shaft coupled to the driving shaft of the motor can be inserted therein, and having four fitting grooves recessed along the side circumference;
Four connectors each including a fitting portion fitted to be rotatable relative to the fitting groove, a connecting rod extending from the fitting portion, and a head portion coupled to one side of the diaphragm; And
It characterized in that it comprises four head caps respectively coupled to the head portion to cover the other side of the diaphragm,
Diaphragm Pump Drive Unit. The method of claim 1,
The fitting grooves are each partitioned by a pair of partitions provided along the longitudinal direction of the hub,
Diaphragm Pump Drive Unit. The method of claim 2,
The hub,
It characterized in that it comprises a first cover provided on the lower side to be integrally coupled to the lower end of the partition,
Diaphragm Pump Drive Unit. The method of claim 3,
In the first cover, characterized in that the first projection insertion hole formed to penetrate through the first cover at the position where the fitting groove is formed, through-formed,
Diaphragm Pump Drive Unit. The method of claim 4, wherein
The fitting portion,
An additional part provided to have a thickness greater than the thickness of the connecting rod; And
It characterized in that it comprises a first insertion protrusion protruding downward from the lower end of the toothing portion is inserted into the first projection insertion hole,
Diaphragm Pump Drive Unit. The method of claim 5,
The pair of partition walls, characterized in that the connector is provided to be spaced apart from each other on the basis of the beetle so as to rotate within a predetermined range,
Diaphragm Pump Drive Unit. The method of claim 5,
The first cover,
A first protrusion through which a first communication hole communicating with the first protrusion insertion hole is formed, and protruded from a lower side to accommodate one end of the first insertion protrusion; And
The second communication hole communicates with the shaft insertion hole is formed through, characterized in that it comprises a second protrusion provided to protrude from the lower side so that one end of the eccentric shaft is inserted,
Diaphragm Pump Drive Unit. The method of claim 5,
The hub,
A cover fitting protrusion formed to protrude in an upward direction of the pair of partition walls; And
Characterized in that it further comprises a second cover through which the fitting protrusion insertion hole into which the cover fitting protrusion is inserted,
Diaphragm Pump Drive Unit. The method of claim 8,
The fitting portion further includes a second insertion protrusion protruding in an upward direction from an upper end of the toothing portion,
In the second cover, characterized in that the second projection insertion hole is formed, the second insertion projection is inserted,
Diaphragm Pump Drive Unit. 10. The method of claim 9,
The second cover is,
A third protrusion through which a third communication hole communicating with the second protrusion insertion hole is formed and protruded from an upper surface to accommodate one end of the second insertion protrusion; And
A fourth communication hole communicating with the shaft insertion hole is formed through, characterized in that it comprises a fourth protrusion provided to protrude from the upper side so that one end of the eccentric shaft is inserted,
Diaphragm Pump Drive Unit. The method of claim 1,
The connecting rod may include a reinforcing part provided adjacent to one side of the head part; And
Characterized in that provided by the stepped from the reinforcement portion extending to the fitting side,
Diaphragm Pump Drive Unit. The method of claim 1,
The head portion,
At least one head insertion protrusion inserted into a head coupling hole formed through the diaphragm; And
And a second cap fastening hole communicating with the first cap fastening hole formed through the diaphragm.
Diaphragm Pump Drive Unit. The method of claim 12,
The head cap,
A third cap fastening hole into which the head insertion protrusion extending through the diaphragm is inserted; And
And a fourth cap fastening hole communicating with the first cap fastening hole and the second cap fastening hole.
Diaphragm Pump Drive Unit. A motor including a drive shaft;
A shaft insertion hole is formed in the center area so that the eccentric shaft which is biased with respect to the drive shaft can be inserted, and a hub having four fitting grooves recessed along the side circumference, and the fitting that can be rotated relative to the fitting groove. Four connectors each including a portion, a connecting rod extending from the fitting portion, a head portion coupled to one side of the diaphragm, and four heads respectively coupled to the head portion to cover the other side of the diaphragm. A diaphragm pump drive unit including a cap;
A housing in which the diaphragm pump driving unit is accommodated and four through holes are respectively formed in a position adjacent to the head part; And
It characterized in that it comprises a four housing cover provided to cover each of the through holes,
Diaphragm pump. The method of claim 14,
On the inner side of the housing cover,
Recess grooves having substantially the same size as the through-holes are characterized in that the recessed,
Diaphragm pump. 16. The method of claim 15,
The diaphragm is,
An intake valve provided to allow air sucked from the inner space of the housing to flow into the concave groove; And
And an exhaust valve disposed adjacent to the intake valve and provided to allow air received in the concave groove to flow out to an external outlet hole formed in an upper portion of the housing.
Diaphragm pump. The method of claim 16,
The diaphragm is made of an elastic material,
The intake valve and the exhaust valve, respectively,
A ventilation slit formed by cutting a portion of the diaphragm; And
Characterized in that it comprises a recovery unit provided in the ventilation slit,
Diaphragm pump. The method of claim 17,
The restoration unit,
A support provided at the lower end; And
And an extension part extending from the support part and provided to have a width greater than the width of the support part.
Diaphragm pump. The method of claim 16,
The housing cover,
An intake groove formed to communicate with the concave groove at a position where the intake valve is disposed; And
Characterized in that the exhaust hole is formed to be in communication with the concave groove at the position where the exhaust valve is disposed,
Diaphragm pump. 20. The method of claim 19,
In the housing, characterized in that the through-hole is formed in the horizontal hole interconnecting the exhaust hole and the external outlet hole so that the air accommodated in the concave groove can flow into the external outlet hole,
Diaphragm pump.

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