KR20130026859A - Vacuum pump - Google Patents

Abstract

PURPOSE: A vacuum pump is provided to allow a user to easily assemble or disassemble a dust filter inserted into a vacuum suction port when locking or releasing a nipple. CONSTITUTION: A vacuum pump comprises a housing(200), a front cover(300), a rear cover(400), a multistage ejector, and a nipple. A vacuum suction port(220) is formed in the housing in order to connect the housing and a vacuum chamber(210). A rear surface of the front cover is fixed in a front surface of the housing, and a hollow inlet chamber(310) is formed inside the front cover. The front surface of the rear cover is fixed to the rear surface of the housing, and a hollow outlet chamber(410) is formed inside the rear cover. The multistage ejector is installed at the vacuum chamber of the housing in a longitudinal direction. An inlet nozzle included in front of the multistage ejector is connected to the inlet chamber. One end of the nipple is connected to the vacuum suction port, and the other end of the nipple is connected to an external device with a tube as a medium.

Description

Vacuum Pump

According to the present invention, a multi-stage ejector for generating a negative pressure in a predetermined space as the high-speed compressed air is introduced and discharged is coupled to the inside of the housing of the vacuum pump, and a dust filter for filtering air introduced into each of the vacuum suction ports formed in the housing. It relates to a vacuum pump which is inserted and coupled.

The conventional technology of a multi-stage ejector included in a vacuum pump to generate a vacuum negative pressure is Patent Document 1 (Korean Patent Registration Publication No. 10-1039470), which is the applicant's patent, and specifically, an inlet chamber, an outlet chamber, and a vacuum chamber. Is a vacuum ejector pump including a multi-stage ejector which is installed through a partition and a partition between the respective chambers, and generates negative pressure in the vacuum chamber of the housing as high-speed compressed air is introduced and discharged. .

The multi-stage ejector may be connected between an inlet nozzle coupled to communicate with the inlet chamber, an outlet nozzle coupled to communicate with the outlet chamber, and the inlet nozzle and outlet nozzle, respectively, disposed in series in the vacuum chamber. . A through hole is formed in each outer circumferential surface thereof, and a plurality of cylindrical slots in which the vacuum chamber and the inside communicate with each other are inserted into and coupled to each other by an O-ring between each of the slots, and are spaced apart in series.

A plurality of intermediate nozzles having an annular valve coupling groove formed in an outer side in the longitudinal direction with respect to the O-ring, an annular valve body fitted into the valve coupling groove of each of the intermediate nozzles, and extending from the valve body to form the slot It comprises a flexible valve consisting of a valve member for opening and closing each through the inside.

As another conventional technology, Patent Document 2 (Korean Patent Publication No. 10-0645273) described in the prior art document in which a dust filter for filtering dust contained in air introduced into a vacuum pump having a multi-stage ejector is further added. As shown in FIG. 1, the ejector pump 4 is installed in the vacuum chamber 3 formed in the housing 2.

The ejector pump 4 is a rotationally symmetrical body, includes one or more nozzles arranged in series therein and a valve mechanism 5 which is received along the wall surface of the ejector body. The ejector body is a multi-stage ejector having a plurality of valve seats formed therein, and the ejector is an inner end or bottom surface 6 of the vacuum chamber 3 to communicate fluid flow with the compressed air inlet 7. It is extended to communicate with.

The ejector generates underpressure in the surrounding vacuum chamber 3 by the action of compressed air. The vacuum chamber 3 is connected to an apparatus system which is operated by negative pressure through the connecting portion 8.

The cross-sectional shape of the vacuum chamber 3 is preferably circular. The vacuum chamber 3 is formed in a separate housing 2 attachable to the pressure actuating device.

The silencer 11 is accommodated in the bent portion of the vacuum chamber 3, and the silencer 11 is sealed by the O-ring 12. The silencer 11 is rotationally symmetrical and the inner end 13 extends into the vacuum chamber 3.

In the vacuum chamber 3, the ejector body 4 is wrapped in the circumferential direction by a dust filter 15 extending concentrically with itself. The dust filter 15 extends substantially over the entire length of the ejector body. The dust filter 15 includes a tubular filter body 16 made of a porous material, the outside of which is supported by a cylindrical frame 17. The frame and the filter body 16 are formed in a self-accepting rotationally symmetrical form that extends from the bottom surface 6 of the vacuum chamber 3 to the inner end of the silencer 11 located in the bent portion of the vacuum chamber 3. do.

On the other hand, the dust filter 15 main body is formed from a ceramic material or a synthetic material or molded into a metal sintered body so as to be self-acceptable and supported by the ejector main body and extend over the entire length of the ejector main body.

The frame 17 is preferably molded of a synthetic material such as plastic or nylon. In a cylindrical wall the frame is shaped to have a region 18 of through or holes and longitudinal and transverse reinforcements 19, 20 without through or holes. Annular shoulders 21 are formed at both ends of the frame, and are attached to contact the bottom surface 6 of the vacuum chamber 3 and the inner ends of the muffler 11, respectively.

On the other hand, the frame and the dust filter 15 may be integrally molded and manufactured, and the cylindrical dust filter 15 main body is formed concentrically with the ejector body over the entire length of the ejector body.

In the case of Patent Document 1, the external device is connected to the external device through a vacuum suction port communicating with the vacuum chamber from the outside of the vacuum pump housing, the air is introduced through the dust filter device is installed separately from the external device It is a configuration that flows into the vacuum chamber of the housing. Therefore, the patent document 1 is a dust filter air is introduced into the vacuum suction port of the housing through a dust filter device that is installed separately on the outside of the housing body of the vacuum pump.

The patent document 1 can not be manufactured as a single component because the dust filter device is installed separately from the housing main body of the vacuum pump, and also because the dust filter device must be installed in a separate installation space, interference with other parts occurs. There is a problem that the assembly is deteriorated and it is difficult to make the entire size of the equipment compact.

In the case of Patent Document 2, in order to solve the problem of Patent Document 1, the vacuum chamber 3 is provided with a cylindrical dust filter 15 concentric with the ejector main body 4, so that the outside of the ejector main body 4 is provided. The face is wrapped in the circumferential direction. That is, when the negative pressure is generated in the surrounding vacuum chamber 3 by the action of the compressed air of the ejector, the negative pressure is generated in the connecting portion 8 which is in communication with the vacuum chamber 3 and connected to the external device so that air is introduced. When the dust contained in the air is filtered to the dust filter 15 surrounding the vacuum chamber (3).

In Patent Document 2, when the vacuum pump 1 is used for a long time, dust and contaminants are trapped in the dust filter 15, so that the function of the dust filter 15 is degraded. Thus, the vacuum pump 1 is completely decomposed. Clean to remove the dust filtered on the dust filter (15) or replace with a new dust filter (15) and reassemble. At this time, since the dust filter 15 surrounds the vacuum chamber 3 inside the housing 2 of the vacuum pump 1, the entire vacuum pump should be separated and assembled during disassembly and assembly.

Therefore, Patent Document 2, the dust filter 15 is separated from the housing 2 of the vacuum pump 1 only when the vacuum pump 1 is assembled in a completely disassembled state, there is a problem that degradation and assembly There is this. In addition, since the cylindrical dust filter 15 must be manufactured to integrally cover the entire outer circumferential surface of the vacuum chamber 3 installed inside the housing 2, manufacturing is difficult and manufacturing costs are increased.

In addition, since the dust filter 15 is integrally formed, there is a problem in that the entire vacuum pump 1 cannot be used when cleaning or replacing the dust filter 15. That is, the plurality of connecting portions 8 communicated with the vacuum chamber 3 of the housing 2 may be connected to an external device, respectively. Since only one dust filter 15 is formed, the vacuum pump ( 1) There is a problem that all the external devices connected to the vacuum pump 1 cannot be used because they are stopped.

Korean Patent Registration Publication No. 10-1039470 Korea Patent Publication No. 10-0645273

In order to solve the above problems, an object of the present invention is to filter the air flowing into the vacuum suction port by fixing the nipple while inserting a separate dust filter into each of the vacuum suction port communicating with the vacuum chamber inside the housing, The present invention provides a vacuum pump that can easily disassemble and assemble a dust filter inserted into a vacuum suction port by only loosening or locking the nipple coupled to the vacuum suction port.

In addition, in order to increase the assemblability when assembling the vacuum pump and the machinery, a long slits are formed on the four sides of the rectangular columnar housing, and a vacuum pump is provided to allow the 'b' shaped fixing bracket to be combined with the slits with the fixing bolts. There is another purpose.

In order to achieve the above object, a vacuum pump according to the present invention includes a housing in which a hollow vacuum chamber is formed along a longitudinal direction and a vacuum suction port is formed on one outer circumferential surface to communicate with the vacuum chamber from the outside, and a rear surface thereof. A front cover fixedly coupled to the front surface of the housing and having a hollow inlet chamber therein; a front cover fixedly coupled to the rear of the housing; a rear cover having a hollow outlet chamber therein; and a vacuum chamber of the housing Installed in the longitudinal direction, the inlet nozzle provided at the front communicates with the inlet chamber, the outlet nozzle provided at the rear communicates with the outlet chamber, and high-speed compressed air flows into the outlet nozzle from the inlet nozzle. And a multi-stage ejector for generating a negative pressure in the vacuum chamber as it is discharged, one end of which is coupled to the vacuum suction port, and the other end of which has an external field. It includes a nipple connected through the tube, the vacuum suction port of the housing, the engaging jaw is formed protruding in the inner circumferential direction at the inner end in communication with the vacuum chamber, the nipple while being inserted into the vacuum suction port Is pressed by one end of the locking jaw is fixed to, and further comprises a disk-shaped dust filter for filtering the air flowing into the vacuum suction port.

In addition, the front cover has a hexahedron shape, the first inlet port is formed through the front surface so as to communicate with the inlet chamber, the second inlet port penetrates to communicate with the inlet chamber on any one of the four sides except the front and rear. And a selected one of the first inlet port and the second inlet port is connected to a compressor for supplying compressed air, and the other of the first inlet port and the inlet port plug is closed by being coupled.

In addition, the rear cover has a hexahedron shape, the first outlet port is formed through the rear surface to communicate with the outlet chamber, and the second outlet port penetrates through any one of the four sides except for the front and rear surfaces. And a sound absorber for reducing noise of the compressed air is connected to one selected from the first outlet port and the second outlet port, and the outlet port cap is coupled to and closed.

In addition, the housing has a rectangular columnar shape, the slits are formed on the four sides except for the front and rear, and the coupling holes are formed through the vertical side and the horizontal side through the 'b' shape, respectively, the vertical side or The coupling hole of any one side of the horizontal side is characterized in that it further comprises a fixing bracket coupled to the slit and the fixing bolt of the housing.

The vacuum pump according to the present invention communicates with the vacuum chamber of the vacuum pump and is inserted into the vacuum suction port while being inserted into the vacuum suction port while being pressurized with a nipple to be fixed to the locking jaw so that the locking jaw is inserted into the vacuum suction port. The dust filter can be easily disassembled and assembled, and the time for disassembling and assembling the dust filter can be shortened, and the nipple can be combined with an unused vacuum suction port when cleaning or replacing the dust filter to keep the vacuum pump running. It can be effective.

In addition, the slits of the rectangular column is formed on the four sides of the housing, respectively, and the vacuum pump can be easily assembled into the machinery as a vacuum pump that is combined with the slit with the 'b' shaped fixing bracket to the fixing bolt.

1 is a cross-sectional view showing a vacuum ejector pump having a conventional dust filter,
Figure 2 is a perspective view of the housing of the present invention vacuum pump,
3 is a cross-sectional view taken along line AA of FIG. 2,
Figure 4 is a cross-sectional view showing a state before the dust filter is coupled to the vacuum suction port of the vacuum pump of the present invention,
Figure 5 is a cross-sectional view showing a state in which the dust filter is coupled to the vacuum suction port of the vacuum pump of the present invention,
Figure 6 is a perspective view of the vacuum pump of the present invention,
7 is a cross-sectional view taken along line BB of FIG. 6,
8 is a cross-sectional view showing a state in which the inlet port plug and the outlet port plug are coupled to FIG.
9 is a cross-sectional view illustrating a state in which the multi-stage ejector is coupled to FIG. 6,
10 is a perspective view showing a state in which the fixing bracket is coupled to the slit formed in the housing of the vacuum pump of the present invention,
11 is a perspective view illustrating a state in which a compressor and a sound absorber are coupled to a vacuum pump of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the jin pump according to the present invention.

2 to 9, the vacuum pump according to the present invention, the vacuum chamber 210 and the vacuum suction port 220 is formed and the multi-stage ejector 800 is coupled to the housing 200, the inlet chamber 310 ) And a front cover 300 having first and second inlet ports 320 and 330, and a rear cover 400 having an outlet chamber 410 and first and second outlet ports 420 and 430. The vacuum suction port 220 includes a dust filter 222 that is formed while the locking jaw 221 is formed and pressed into the nipple 500. In addition, the front cover 300 includes an inlet port plug 340, and the rear cover 400 includes an outlet port plug 440. In addition, as shown in FIG. 9, the housing 200 includes a slit 240 formed and a fixing bracket 600 is coupled to the slit 240 by a fixing bolt 620.

The housing 200 of the vacuum pump 100 has a rectangular pillar shape, as shown in Figures 2 and 3, the hollow vacuum chamber 210 is formed over the front and rear in the longitudinal direction. A vacuum suction port 220 is formed on one side of the outer circumferential surface of the housing 200 so as to communicate with the vacuum chamber 210 from the outside. The vacuum suction port 220 may be formed in one or two or more according to the vacuum capacity of the vacuum pump 100.

4 and 5, one end of the nipple 500 through which an external device is connected via a tube is coupled to the vacuum suction port 220 as shown in FIGS. 4 and 5. That is, one end of the nipple 500 is coupled to the vacuum suction port, and the other end is connected to the external device via a tube. Here, the external device is a vacuum device that is connected to the vacuum pump 100 and operates, for example, an adsorption device.

In addition, the vacuum suction port 220, the locking step 221 protrudes in the inner circumferential direction at the inner end in communication with the vacuum chamber 210. The disk is inserted into the vacuum suction port 220 while being pressed by one end of the nipple 500 to be fixed to the locking jaw 221 and to filter the air flowing into the vacuum suction port 220. It further comprises a dust filter 222.

The dust filter 222 is inserted into the vacuum suction port 220 while being pressed by one end of the nipple 500, that is, one end of the nipple 500 coupled to the vacuum suction port 220. Therefore, the dust filter 222 is a negative pressure is generated in the vacuum chamber 210 by the operation of the multi-stage ejector 900 which will be described later coupled to the vacuum chamber 210 of the housing 200 to the vacuum suction port ( 220 to filter the dust contained in the air flowing through. In addition, the dust filter 222 is easily inserted into the shape of the vacuum suction port 220 to be inserted is formed in a disc shape for ease of assembly.

If the shape of the vacuum suction port 220 is a polygon, the dust filter 222 is also formed in a polygon. However, since the vacuum suction port 220 and the nipple 500 are coupled in the form of a female screw, it is preferable to form the vacuum suction port 220 in a circular shape.

The housing 200 has long slits 240 formed on four sides except for the front and rear surfaces thereof. In addition, as shown in FIG. 10, the fixing bracket 600 is formed with a coupling hole 610 penetrating through the vertical side and the horizontal side in a 'b' shape, respectively. The coupling hole 610 of one side of the vertical side or the horizontal side of the fixing bracket 600 is coupled to the slit 240 and the fixing bolt 620 of the housing 200.

When one side of the fixing bracket 600 of the 'b' shape formed in the slit 240 of the housing 200 in the longitudinal side and the horizontal side is coupled to the fixing bolt 620, except for the combined one side The fixing bracket 600 having the coupling hole 610 formed on one side thereof is coupled to the machinery through the fixing bolt 620. That is, one side of the 'b' shaped fixing bracket 600 is coupled to the slit 240 of the housing 200, the other side is coupled to the machinery. Therefore, since the vacuum pump 100 can be easily attached to machinery, the assembly is excellent.

In addition, an assembly hole 110 through which the front cover 300 and the rear cover 400, which will be described later, are assembled with bolts, is formed on the front and rear surfaces of the housing 200. Of course, the assembly holes 110 are formed in the front cover 300 and the rear cover 400 which will be described later to face the assembly holes 110 formed in the housing 200.

6 to 9, the front cover 300 is fixed to the front surface of the housing 200 as shown in Figure 6, the hollow inlet chamber 310 is formed therein. The combination of the front cover 300 and the front cover 300 of the housing 200, the assembly hole 110 in the front cover 300 to correspond to the assembly hole 110 formed through the front and rear of the housing 200. ) Penetrates the rear surface of the front cover 300 to the front surface of the housing 200 and then fixedly fixed with a bolt or the like. Here, the O-ring 120 is sealed at a position where the housing 200 and the front cover 300 are coupled to maintain the vacuum state of the vacuum pump 100.

In addition, the front cover 300 has a hexahedron shape, the first inlet port 320 is formed through the front surface so as to communicate with the inlet chamber 310, the inlet chamber 310 on any one surface except the front and rear surfaces. In order to communicate with the second inlet port 330 is formed through. The selected one of the first inlet port 320 and the second inlet port 330 is connected to the compressor 700 for supplying compressed air, and the inlet port cap 340 is coupled to and closed.

6 to 9, the front cover is fixed to the rear of the housing 200, as shown in Figures 6 to 9, the hollow outlet chamber 410 is formed therein. The combination of the rear of the housing 200 and the rear cover 400, the assembly hole 110 in the rear cover 400 to correspond to the assembly hole 110 formed through the front and rear of the housing 200. ) Penetrates the front cover of the rear cover 400 to the rear of the housing 200 and then fixedly fixed with a bolt or the like. Here, the O-ring 120 is sealed at a position where the housing 200 and the rear cover 400 are coupled to maintain the vacuum state of the vacuum pump 100.

In addition, the rear cover 400 has a hexahedron shape, the first outlet port 420 penetrates through the rear surface of the rear cover 400 so as to communicate with the outlet chamber 410, and the outlet chamber on any one surface except for the front side and the rear side. The second outlet port 430 is formed to communicate with the 410. A selected one of the first outlet port 420 and the second outlet port 430 is connected to the sound absorber 800 to reduce the noise of the compressed air, the other end is closed by the outlet port plug 440 is coupled. .

The multi-stage ejector 900 is installed along the longitudinal direction in the vacuum chamber 210 of the housing 200, as shown in Figure 9, the inlet nozzle 910 provided in the front and the inlet chamber 310 The outlet nozzle 920 communicated with the rear side is in communication with the outlet chamber 410, and the vacuum chamber as the high-speed compressed air is introduced into and discharged from the inlet nozzle 910 to the outlet nozzle 920. A negative pressure is generated at 210.

When the vacuum chamber 210 of the housing 200 generates negative pressure by the multi-stage ejector 900, external air flows into the vacuum suction port 220 in communication with the vacuum chamber 210. At this time, the dust of the air introduced by the dust filter 222 of the disk-shaped is inserted while being pressed by one end of the nipple 500 is coupled to the vacuum suction port 220 is fixed to the locking jaw 221 Is filtered.

Since the vacuum suction port 220 is formed in a plurality of one or more, one end of the nipple 500 connected to the other end by an external device is not coupled, that is, the vacuum suction port 220 which is not operated is closed by coupling a stopper. Let's do it.

When the dust filter 222, which is inserted and fixed while being pressed by one end of the nipple 500, is inserted into the locking jaw 221 protruding inwardly at the inner end of the vacuum suction port 220, the dust is used. As the filter 222 is filtered, a lot of dust or foreign matter is caught, thereby weakening the function of the dust filter 222. That is, when the dust filter 222 does not properly filter the dust in the air flowing into the dust or foreign matter infiltrated into the vacuum pump 100, the vacuum pump 100 malfunctions or breaks down, so after a certain time of use Disassemble and clean to remove dust. In addition, if the dust filter 222 can not be cleaned even by cleaning it is replaced with a new one.

At this time, if it is configured in the form of wrapping with one cylindrical dust filter of the multi-stage ejector 800 is inserted and coupled to the vacuum chamber 210 as in the prior art, when cleaning or replacing the dust filter 222 the vacuum pump ( 100) should be stopped, and if the vacuum pump 100 is stopped, the machinery that performs the vacuum function may not be able to operate normally, which may cause production disruption.

Therefore, if the vacuum suction port 220 of the vacuum suction port 220 is formed in a plurality, such as the vacuum pump 100 of the present invention when cleaning or replacement is required, the other end is connected to the tube once the external device After disassembling and disassembling the nipple 500 coupled to the vacuum suction port 220, the nipple 500 is coupled to another vacuum suction port 220 that is not in use to operate an external device normally. The dust filter 222 inserted into the vacuum suction port 220 to be replaced is cleaned or replaced. Accordingly, even when the dust filter 222 is cleaned or replaced, the vacuum pump 100 may be continuously operated without stopping, so that machinery such as an external device that performs a vacuum function is normally operated.

In addition, disassembly of the dust filter 222 that is inserted and fixed while being pressed by one end of the nipple 500 into the locking jaw 221 protruding inwardly at the inner end of the vacuum suction port 220 is the nipple. Disassembly is completed by turning (500) to loosen, and assembling is completed by turning the nipple (500) to lock the assembly and disassembly is convenient and the time for maintenance is reduced.

The assembling of the respective components in the vacuum pump 100 of the present invention is completed as shown in FIG. 11, and the coupling relationship and the operating relationship of the respective components will be described once again.

The vacuum pump 100 has a hollow vacuum chamber 210 is formed in the longitudinal direction of the interior of the housing 200, as shown in Figure 11, and the vacuum chamber 210 from the outside on one outer peripheral surface The vacuum suction port 220 is formed to communicate. The vacuum suction port 220 has a locking step 221 protruding in the inner circumferential direction at the inner end thereof, and the dust filter 222 is inserted into the vacuum suction port 220 by the locking step 221. It is caught and pressed by one end of the nipple 500 is fixed.

In addition, the rear surface of the front cover 300 is fixedly coupled to the front surface of the housing 200, the hollow inlet chamber 310 is formed inside the front cover 300, the inlet chamber 310 The first and second inlet ports 320 and 330 are formed to communicate with each other in different directions. The compressor 700 is connected to one of the first and second inlet ports 320 and 330, and the inlet port plug 340 is coupled to and closed.

In addition, the front surface of the rear cover 400 is fixedly coupled to the rear of the housing 200, the hollow outlet chamber 410 is formed inside the rear cover 400, the outlet chamber 410 is The first and second outlet ports 420 and 430 are formed to communicate with each other in different directions. The sound absorber 800 is connected to one of the first and second outlet ports 420 and 430, and the outlet port plug 440 is coupled to and closed by the other one.

In addition, the vacuum chamber 210 communicating with the vacuum suction port 220 of the housing 200 is the inlet chamber 310 and the housing of the front cover 300 coupled to the front surface of the housing 200. It is coupled to communicate with the outlet chamber 310 of the rear cover 300 is coupled to the rear of the (200).

The air flow of the vacuum pump 100 coupled as described above is as follows.

First, the compressor 700 is compressed into the inlet chamber 310 of the front cover 300 coupled to communicate with the first inlet port 320 or the second inlet port 330 to which the compressor 700 is connected. Air is delivered.

Next, the compressed air delivered to the inlet chamber 310 is the inlet nozzle 910 of the multi-stage ejector 900 coupled to the vacuum chamber 210 of the housing 200 in communication with the inlet chamber 310. Negative pressure is generated in the vacuum chamber 210 as it is introduced into and discharged from the outlet nozzle 920. At the same time, a negative pressure is also generated in the vacuum suction port 220 which is in communication with the vacuum chamber 210, so that the outside air flows in and dust is filtered by the dust filter 222.

Finally, the compressed air which generates negative pressure in the vacuum chamber 210 via the multi-stage ejector 900 is connected to the vacuum chamber 210 and the multi-stage ejector 900 of the housing 200 so as to communicate with each other. It is discharged to the first outlet port 420 or the second outlet port 430 to which the sound absorber 800 is connected via the outlet chamber 410 of 400.

On the other hand, the respective coupling portion is the O-ring 120 is interposed for tight sealing of the compressed air.

A plurality of first inlet port 320 and the second inlet port 330 is formed in communication with the inlet chamber 310 of the hollow inside the front cover 300, the compressor 700 is coupled, The first outlet port 420 and the second outlet port 430, which communicate with the hollow outlet chamber 410 and to which the sound absorber 800 is coupled, are formed in the rear cover 400. The reason is that when the compressor 700 is coupled to the front cover 300, and the sound absorber 800 is coupled to the rear cover 400, the vacuum pump 100 is assembled with machinery. Therefore, it is to select and assemble so that mutual interference does not occur.

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

100. Vacuum pump 110. Assembly hole
120. The O-Ring
200. Housing 210. Vacuum chamber
220. Vacuum suction port 221. Locking jaw
222. Dust filter 230. Vacuum sensor
240. Slit 300. Front cover
310. Entrance chamber 320. First entrance port
330. Entrance port 340. Entrance port plug
400. Rear cover 410. Exit chamber
420. First exit port 330. Second exit port
440. Exit port plug 500. Nipple
600. Fixing bracket 610. Coupling hole
620. Fixed bolt 700. Compressor
800. Absorber 900. Multistage ejector
910. Entry nozzle 920. Exit nozzle

Claims (4)

A hollow vacuum chamber formed therein along the length direction, and a housing having a vacuum suction port formed on one outer circumferential surface thereof so as to communicate with the vacuum chamber from the outside;
A front cover fixedly coupled to a front surface of the housing and having a hollow inlet chamber formed therein;
A front cover fixedly coupled to a rear surface of the housing and having a hollow outlet chamber formed therein;
It is installed along the longitudinal direction in the vacuum chamber of the housing, the inlet nozzle provided in the front is in communication with the inlet chamber, the outlet nozzle provided in the rear is in communication with the outlet chamber, the high-speed compressed air from the inlet nozzle A multi-stage ejector for generating a negative pressure in the vacuum chamber as it flows into and out of the outlet nozzle;
One end is coupled to the vacuum suction port, the other end includes a nipple connected to the external device via a tube,
The vacuum suction port of the housing has a locking projection protruding in the inner circumferential direction at the inner end communicating with the vacuum chamber,
And a disk-type dust filter inserted into the vacuum suction port and pressed by one end of the nipple to be fixed to the locking jaw and filtering air flowing into the vacuum suction port.
The method of claim 1,
The front cover,
The first inlet port is formed through the front surface to communicate with the inlet chamber in the shape of a hexahedron, the second inlet port is formed to communicate with the inlet chamber on any one of the slopes except the front and rear,
Selected one of the first inlet port and the second inlet port is connected to the compressor for supplying compressed air, the other one is a vacuum pump, characterized in that the inlet port plug is coupled and closed.
The method of claim 1,
The rear cover,
The first outlet port is formed through the rear surface in communication with the outlet chamber in a hexahedral shape, the second outlet port is penetrated to communicate with the outlet chamber on any one surface except the front and rear,
Selected one of the first outlet port and the second outlet port is connected to a sound absorber for reducing the noise of the compressed air, the other end of the vacuum pump, characterized in that the outlet port plug is coupled and closed.
The method of claim 1,
The housing includes:
It is rectangular pillar shape, and long slits are formed on the slopes except the front and rear sides,
A coupling hole is formed in each of the vertical side and the horizontal side through the 'b' shape, and the coupling hole of any one of the vertical side and the horizontal side further includes a fixing bracket coupled to the slit and the fixing bolt of the housing. Vacuum pump.

Images