CN211305871U - Dust collection device and polishing equipment - Google Patents

Abstract

The utility model relates to a dust collecting device and a polishing device.A dust collection valve is arranged on a dust collection pipe and comprises a valve casing, a valve core and a valve cover, a cylindrical valve cavity is arranged in the valve casing, and a high-pressure air inlet communicated with the valve cavity is also arranged on the valve casing; the valve core is cylindrical, an annular groove corresponding to the high-pressure air inlet is formed in the outer wall of the valve core, a dust channel is formed in the middle of the valve core, and a gas jet hole communicated with the dust channel is formed in the side wall, away from the dust suction hole, of the annular groove. The dust collection device and the dust collection valve in the polishing equipment are ingenious in structure, simple in structure and convenient to assemble; the arrangement form of the dust channel and the gas jet holes can form larger negative pressure in the dust channel by utilizing the Venturi effect, and dust generated by the polishing equipment can be effectively collected to a dust collection box or a dust collection bag through a dust collection valve, so that the safety of an electric appliance of the polishing equipment is improved; the volume of the polishing equipment can be reduced, the noise generated in the dust collection process can be reduced, the operation environment is improved, and the dust pollution is reduced.

Description

Dust collection device and polishing equipment

Technical Field

The utility model relates to an equipment of polishing, especially a dust collection device and equipment of polishing.

Background

In the car panel beating repair process, need polish the former car lacquer of impaired position to revealing iron sheet layer usually, gather in the process of polishing and can produce a large amount of dust, need collect in order to guarantee good operation environment to the dust, reduce air pollution. In order to collect dust generated in the polishing process, for example, "a handheld polishing machine with dust collection" disclosed in chinese patent publication No. CN108422297A, a dust collection hood is sleeved outside a polishing wheel, an air suction fan is disposed in the dust collection hood, and the dust generated by polishing is sucked by the air suction fan and then is transported through a duct, so that the air suction fan of such a structure needs to be driven by a motor, and electrical safety needs to be considered in a dust environment, and the cost is high; the pneumatic dust collecting device and the dust collecting system suitable for the grinding process are disclosed in Chinese patent document with the publication number of CN208713716U, which comprises a pneumatic negative pressure structure arranged on a dust collecting pipe connected with a dust outlet of a grinding machine, negative pressure can be formed in the dust collecting pipe, dust can be sucked into a dust suction channel of the grinding machine under the action of the negative pressure, the dust can preferably enter a dust collecting bag through the pneumatic negative pressure structure for collection, a fan is omitted, noise can be reduced, the pneumatic negative pressure collecting device is convenient to use, but the design of the pneumatic negative pressure structure in the scheme is unreasonable, the structure is complex, processing and assembly cost are high, the generated negative pressure is small, and a large high-pressure air source is needed to generate the negative pressure meeting the dust removal requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a dust collection device and equipment of polishing for solve the dust collector security of current equipment of polishing poor, the noise is big, bulky problem.

In order to solve the problems, the utility model provides a dust collecting device, which comprises a dust collecting pipe connected with a dust outlet of a polishing device, wherein a dust suction valve is arranged on the dust collecting pipe, the dust suction valve comprises a valve casing, a valve core and a valve cover, a cylindrical valve cavity is arranged in the valve casing, a dust suction hole which is communicated with the valve cavity and is connected with the dust collecting pipe is also arranged on the valve casing, the central axis of the dust suction hole is coincided with the central axis of the valve cavity, and a high-pressure air inlet hole which is communicated with the valve cavity is also arranged on the valve casing; the valve core is cylindrical, the outer diameter of the valve core is the same as the inner diameter of the valve cavity, an annular groove corresponding to the high-pressure air inlet is formed in the outer wall of the valve core, a dust channel is formed in the middle of the valve core, and a gas injection hole communicated with the dust channel is formed in the side wall, away from the dust suction hole, of the annular groove; the valve cover is used for fixing the valve core in the valve shell, a dust exhaust hole communicated with a dust channel of the valve core is formed in the valve cover, and the dust exhaust hole is communicated with a dust collection box or a dust collection bag through a pipeline.

The utility model provides a dust collection device still has following technical characteristic:

further, the dust passageway include with the negative pressure dust absorption pipe of dust absorption hole intercommunication and with the efflux chamber of dust exhaust hole intercommunication, the negative pressure dust absorption pipe with the efflux chamber is linked together, gas jet orifice with efflux chamber intercommunication just the opening direction orientation of gas jet orifice the dust exhaust hole.

Furthermore, the jet flow cavity comprises a transition section which is in a frustum shape and is communicated with the negative pressure dust suction pipe and a flow gathering section which is communicated with the dust exhaust hole, the diameter of the connection part of the transition section and the flow gathering section is larger than that of the negative pressure dust suction pipe, and the outlet of the gas injection hole is arranged on the conical wall of the transition section; the inner wall of the flow gathering section is smooth and circular-arc-shaped, and the inner diameter of the flow gathering section is reduced from the connection position of the flow gathering section and the transition section to the outlet of the flow gathering section in sequence.

Furthermore, more than three gas injection holes are formed in the valve core, the gas injection holes are uniformly distributed along the central axis of the valve core, and the central axis of the gas injection holes is intersected with the central axis of the valve core.

Further, the central axis of the gas injection hole forms an included angle of 25-45 degrees with the central axis of the valve core.

Further, the central axis of the high-pressure air inlet hole is arranged along the radial direction of the valve cavity.

Furthermore, the diameter of the negative pressure dust suction pipe is smaller than or equal to that of the dust suction hole, and the diameter of the dust discharge hole is smaller than or equal to that of the negative pressure dust suction pipe.

The utility model also provides an equipment of polishing, this equipment of polishing include grab handle, driving motor and the wheel of polishing, driving motor drives through the pivot the wheel of polishing rotates, polish and take turns to and be equipped with the dust through-hole, be equipped with in the casing of equipment of polishing with the dust collection chamber of dust through-hole intercommunication, still be equipped with on the grab handle with the dust collecting tube of dust collection chamber intercommunication, be connected with above-mentioned dust collection device on the dust collecting tube, the high-pressure inlet port of dust collection device's dust absorption valve passes through the pipeline and links to each other with high pressurized air source, the dust exhaust hole of dust absorption valve passes through pipeline and dust collection box or dust bag intercommunication.

The utility model also provides an equipment of polishing, this equipment of polishing include grab handle, pneumatic motor and the wheel of polishing, be equipped with in the grab handle and be used for the drive pneumatic motor pivoted drive gas pipeline, pneumatic motor can drive the wheel of polishing rotates, its characterized in that, be equipped with the dust through-hole on the wheel of polishing, be equipped with in the casing of the equipment of polishing with the dust collection chamber of dust through-hole intercommunication, still be equipped with on the grab handle with the dust collecting tube of dust collection chamber intercommunication, be connected with above-mentioned dust collection device on the dust collecting tube, the high-pressure inlet port of dust collection device's dust absorption valve passes through the pipeline and links to each other with high pressurized air source, the dust exhaust hole of dust absorption valve passes through pipeline and dust collection box or dust bag.

The utility model also provides an equipment of polishing, this equipment of polishing include grab handle, hand push board and polishing board, be equipped with the dust through-hole on the polishing board, the hand push board with be formed with between the polishing board with the dust collection chamber of dust through-hole intercommunication, still be equipped with on the grab handle with the dust collecting tube of dust collection chamber intercommunication, be connected with above-mentioned dust collection device on the dust collecting tube, the high-pressure inlet port of dust collection device's dust absorption valve passes through the pipeline and links to each other with high pressurized air source, the dust exhaust hole of dust absorption valve passes through pipeline and dust collection box or dust bag intercommunication.

The utility model discloses following beneficial effect has: the dust collection valve in the dust collection device has the advantages of ingenious conception, simple structure, convenient assembly and low cost; the arrangement form of the dust channel and the gas jet holes can form larger negative pressure in the dust channel by utilizing the Venturi effect, and dust generated by polishing equipment can be effectively collected to a dust collection box or a dust collection bag through a dust collection valve; the dust collection valve shell replaces a dust collection fan in the polishing equipment, so that the safety of the electrical appliance of the polishing equipment is improved; the volume of the polishing equipment can be reduced, the noise generated in the dust collection process can be reduced, the operation environment is improved, and the dust pollution is reduced.

Drawings

Fig. 1 is a schematic structural view of a dust suction valve in an embodiment of the present invention;

fig. 2 is a sectional view of a dust suction valve in an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a valve element in an embodiment of the present invention;

fig. 4 is a schematic view of an internal structure of the valve element in the embodiment of the present invention;

fig. 5 is a partial cross-sectional view of a valve cartridge in an embodiment of the invention;

fig. 6 is a schematic structural view of a polishing apparatus according to another embodiment of the present invention;

FIG. 7 is a cross-sectional view of the grinding apparatus of FIG. 6;

fig. 8 is a schematic structural view of a polishing apparatus according to another embodiment of the present invention;

fig. 9 is a sectional view of the sanding apparatus of fig. 8.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

Fig. 1 to 5 show an embodiment of a dust collecting device and a polishing apparatus of the present invention, which includes a dust collecting tube 01 connected to a dust outlet of the polishing apparatus, a dust suction valve 10 is installed on the dust collecting tube 01, the dust suction valve 10 includes a valve housing 11, a valve core 12 and a valve cover 13, a cylindrical valve cavity is disposed in the valve housing 11, a dust suction hole 111 connected to the valve cavity and connected to the dust collecting tube 01 is further disposed on the valve housing 11, a central axis of the dust suction hole 111 coincides with a central axis of the valve cavity, and a high pressure air inlet 112 connected to the valve cavity is further disposed on the valve housing 11; the valve core 12 is cylindrical, the outer diameter of the valve core 12 is the same as the inner diameter of the valve cavity, an annular groove 121 corresponding to the high-pressure air inlet 112 is arranged on the outer wall of the valve core 12, a dust channel 122 is arranged in the middle of the valve core 12, and a gas injection hole 123 communicated with the dust channel 122 is arranged on the side wall of the annular groove 121 far away from the dust suction hole 111; the valve cover 13 is used for fixing the valve core 12 in the valve housing 11, and the valve cover 13 is provided with a dust exhaust hole 131 communicated with the dust channel 122 of the valve core 12, and the dust exhaust hole 131 is communicated with the dust box 02 or the dust bag through a pipeline. The dust collecting device in the embodiment has the advantages of ingenious dust collecting valve structure, simple structure, convenience in assembly and low cost; the arrangement form of the dust channel and the gas jet holes can form larger negative pressure in the dust channel by using high-pressure gas with smaller pressure through the Venturi effect, and dust generated by polishing equipment can be effectively collected to a dust collection box or a dust collection bag through a dust collection valve; the dust collection valve shell replaces a dust collection fan in the polishing equipment, so that the safety of the electrical appliance of the polishing equipment is improved; the volume of the polishing equipment can be reduced, the noise generated in the dust collection process can be reduced, the operation environment is improved, and the dust pollution is reduced.

In an embodiment of the present application, preferably, the dust channel 122 includes a negative pressure dust suction pipe 1221 communicating with the dust suction hole 111 and a jet flow cavity 1222 communicating with the dust discharge hole 131, the negative pressure dust suction pipe 1221 communicates with the jet flow cavity 1222, the gas injection hole 123 communicates with the jet flow cavity 1222 and an opening direction of the gas injection hole 123 faces the dust discharge hole 131, so that after the high-pressure gas enters the gas injection hole into the jet flow cavity, the cavity in the jet flow cavity can be driven to rapidly flow out to the dust discharge hole through the gas injection hole to facilitate a venturi effect to form a negative pressure in the negative pressure dust suction pipe, and the dust collecting pipe connected to the dust suction hole can suck dust in the polishing device to the dust suction valve and discharge the dust through the negative pressure. Preferably, the jet cavity 1222 includes a transition section 1223 in a frustum shape communicating with the negative pressure dust suction pipe 1221, and a flow gathering section 1224 communicating with the dust discharge holes 131, a diameter of a connection portion of the transition section 1223 and the flow gathering section 1224 is larger than that of the negative pressure dust suction pipe 1221, and an outlet of the gas injection hole 123 is disposed on a conical wall of the transition section 1223; the inner wall of the flow gathering section 1224 is smooth and circular arc-shaped, and the inner diameter of the flow gathering section 1224 is sequentially reduced from the joint of the flow gathering section and the transition section to the outlet of the flow gathering section, so that high-pressure gas enters the flow entering cavity through the gas injection hole and flows smoothly towards the dust exhaust hole, the resistance is small, larger negative pressure is formed in the negative pressure dust suction pipe, and a high-pressure gas source such as an air pump with smaller pressure can be adopted to generate larger negative pressure through the dust suction valve.

In one embodiment of the present application, preferably, the valve core 12 is provided with more than three gas injection holes 123, the gas injection holes 123 are uniformly arranged along the central axis of the valve core 12, and the central axis of the gas injection holes 123 intersects with the central axis of the valve core 12, that is, the central axis of the gas injection holes 123 intersects with the central axis of the dust channel 122 in the valve core 12, so that the plurality of uniformly distributed gas injection holes 123 form a uniform gas flow in the jet cavity. Preferably, the included angle between the central axis of the gas injection hole 123 and the central axis of the valve core 12 is 25 ° to 45 °, so that the gas flow injected from the gas injection hole is consistent with the dust flow direction in the dust channel, and a large negative pressure can be formed in the negative pressure dust suction pipe by using the venturi effect.

In one embodiment of the present application, it is preferable that the central axes of the high pressure gas intake holes 112 are arranged in the radial direction of the valve chamber, thereby equalizing the gas flow rates in the respective gas injection holes 123 after the high pressure gas enters the annular groove 121 through the high pressure gas intake holes 112. Preferably, the diameter of the vacuum pipe 1221 is equal to or less than the diameter of the suction hole 111, and the diameter of the dust discharge hole 131 is equal to or less than the diameter of the vacuum pipe 1221, so that the flow cross section of the dust and air mixture is reduced and the flow speed is increased when the dust and air mixture flows in the suction valve, thereby enhancing the vacuum suction effect generated by the venturi effect.

Another embodiment of the utility model provides a polishing device, which comprises a handle, a driving motor and a polishing wheel, the driving motor drives the grinding wheel to rotate through a rotating shaft, the grinding wheel is provided with a dust through hole, a dust collecting cavity communicated with the dust through hole is arranged in the shell of the polishing equipment, a dust collecting pipe communicated with the dust collecting cavity is also arranged on the grab handle, the dust collecting pipe is connected with the dust collecting device in the embodiment of the application, a high-pressure air inlet of a dust suction valve of the dust collecting device is connected with a high-pressure air source through a pipeline, the dust exhaust hole of the dust collection valve is communicated with the dust collection box or the dust collection bag through a pipeline, the high-pressure air source can adopt an air pump arranged outside the polishing operation place, and the air pump is connected with the dust collection valve through an air supply hose, so that the polishing operation in the polishing operation place can be prevented from being influenced by the noise generated when the air pump works. Specifically, the equipment of polishing in this embodiment is electronic polisher, the concrete structure and the theory of operation of electronic polisher can refer to "a take dust collection's hand-held type polisher that chinese patent document publication number is CN108422297A, the concrete structure of electronic polisher no longer gives unnecessary details here, this embodiment provides equipment of polishing in this application, through setting up the dust collection device who has the dust absorption valve, dust exhausting fan in the equipment of polishing has been replaced, improve the electrical apparatus security of the equipment of polishing, still reduce the volume of the equipment of polishing, the noise that produces has reduced the dust absorption in-process.

Another embodiment of the present invention shown in fig. 6 and 7 provides a polishing device, which comprises a handle 30, a pneumatic motor 31 and a polishing wheel 32, wherein a driving gas pipeline 33 for driving the pneumatic motor 31 to rotate is arranged in the handle 30, the pneumatic motor 31 can drive the polishing wheel 32 to rotate, a dust through hole is arranged on the polishing wheel 32, a dust collecting chamber 301 communicated with the dust through hole is arranged in a casing of the polishing device, a dust collecting pipe 01 communicated with the dust collecting chamber 301 is further arranged on the handle 30, the dust collecting pipe is connected with a dust collecting device in the above embodiment, a high pressure air inlet 111 of a dust collecting valve 10 of the dust collecting device is connected with a high pressure air source through a pipeline, a dust exhaust hole 131 of the dust collecting valve 10 is communicated with a dust collecting box 02 or a dust collecting bag through a pipeline, the high pressure air source can adopt an air pump arranged outside a polishing operation place, and the air pump is connected with the dust collecting valve, therefore, the grinding operation in the grinding operation place can be prevented from being influenced by the noise generated when the air pump works. Specifically, the equipment of polishing in this embodiment is pneumatic polisher, the concrete structure and the theory of operation of electronic polisher can refer to "an automatic fork polisher pivot eccentric weight structure" that chinese patent document publication No. CN208614449U discloses, the concrete structure of pneumatic polisher is no longer repeated here, this embodiment provides equipment of polishing in this application, through setting up the dust collection device who has the dust absorption valve, replaced the dust exhausting fan in the equipment of polishing, improve the electrical apparatus security of the equipment of polishing, still reduce the volume of the equipment of polishing, the noise that produces has reduced the dust absorption in-process.

As shown in fig. 8 and 9, another embodiment of the present invention provides a polishing device, which comprises a handle, a hand push plate 41 and a polishing plate 42, wherein the polishing plate 42 is provided with a dust through hole 43, a dust collecting cavity 401 communicated with the dust through hole 43 is formed between the hand push plate 41 and the polishing plate 42, the handle is further provided with a dust collecting pipe 01 communicated with the dust collecting cavity 401, the dust collecting pipe 01 is connected with a dust collecting device in the above embodiment, a high pressure air inlet 111 of a dust suction valve 10 of the dust collecting device is connected with a high pressure air source through a pipeline, a dust exhaust hole 131 of the dust suction valve 10 is communicated with a dust collecting box 02 or a dust collecting bag through a pipeline, the high pressure air source can adopt an air pump arranged outside a polishing operation place, the air pump is connected with the dust suction valve through an air supply hose, thereby avoiding the noise influence of the air pump during operation on the polishing operation. Particularly, this equipment of polishing is manual equipment of polishing, is the handheld push pedal 41 of staff at the operation of polishing, drives the board 42 of polishing and removes on treating the work piece of polishing through removing hand push pedal 41, treats the work piece of polishing through the bottom surface of the board of polishing and polishes, and this embodiment provides the equipment of polishing in this application, has the dust collection device of dust absorption valve through the setting, can reduce the noise that the dust absorption in-process produced, improves the operation environment, reduces dust pollution.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (9)

1. A dust collecting device comprises a dust collecting pipe connected with a dust outlet of a polishing device, and is characterized in that a dust suction valve is mounted on the dust collecting pipe and comprises a valve shell, a valve core and a valve cover, a cylindrical valve cavity is arranged in the valve shell, a dust suction hole communicated with the valve cavity and connected with the dust collecting pipe is further formed in the valve shell, the central axis of the dust suction hole is overlapped with the central axis of the valve cavity, and a high-pressure air inlet communicated with the valve cavity is further formed in the valve shell; the valve core is cylindrical, the outer diameter of the valve core is the same as the inner diameter of the valve cavity, an annular groove corresponding to the high-pressure air inlet is formed in the outer wall of the valve core, a dust channel is formed in the middle of the valve core, and a gas injection hole communicated with the dust channel is formed in the side wall, away from the dust suction hole, of the annular groove; the valve cover is used for fixing the valve core in the valve shell, a dust exhaust hole communicated with a dust channel of the valve core is formed in the valve cover, and the dust exhaust hole is communicated with a dust collection box or a dust collection bag through a pipeline.

2. A dust collecting device according to claim 1, wherein: the dust passageway include with the negative pressure dust absorption pipe of dust absorption hole intercommunication and with the efflux chamber of dust exhaust hole intercommunication, the negative pressure dust absorption pipe with the efflux chamber is linked together, gas jet orifice with efflux chamber intercommunication just the opening direction orientation of gas jet orifice the dust exhaust hole.

3. A dust collecting device according to claim 2, wherein: the jet flow cavity comprises a transition section which is in a frustum shape and is communicated with the negative pressure dust collection pipe and a flow gathering section which is communicated with the dust exhaust hole, the diameter of the joint of the transition section and the flow gathering section is larger than that of the negative pressure dust collection pipe, and the outlet of the gas jet hole is arranged on the conical wall of the transition section; the inner wall of the flow gathering section is smooth and circular-arc-shaped, and the inner diameter of the flow gathering section is reduced from the connection position of the flow gathering section and the transition section to the outlet of the flow gathering section in sequence.

4. A dust collecting device according to claim 3, wherein: the valve core is provided with more than three gas jet holes, the gas jet holes are uniformly distributed along the central axis of the valve core, and the central axis of the gas jet holes is intersected with the central axis of the valve core.

5. A dust collecting device according to claim 4, wherein: the included angle between the central axis of the gas injection hole and the central axis of the valve core is 25-45 degrees.

6. A dust collecting device according to claim 1, wherein: the central axis of the high-pressure air inlet is arranged along the radial direction of the valve cavity.

7. A polishing device comprises a grab handle, a driving motor and a polishing wheel, wherein the driving motor drives the polishing wheel to rotate through a rotating shaft, and the polishing device is characterized in that a dust through hole is formed in the polishing wheel, a dust collecting cavity communicated with the dust through hole is formed in a shell of the polishing device, a dust collecting pipe communicated with the dust collecting cavity is further arranged on the grab handle, the dust collecting device of any one of claims 1 to 6 is connected onto the dust collecting pipe, a high-pressure air inlet of a dust suction valve of the dust collecting device is connected with a high-pressure air source through a pipeline, and a dust discharge hole of the dust suction valve is communicated with a dust collecting box or a dust collecting bag through a pipeline.

8. A polishing device comprises a grab handle, a pneumatic motor and a polishing wheel, wherein a driving gas pipeline for driving the pneumatic motor to rotate is arranged in the grab handle, the pneumatic motor can drive the polishing wheel to rotate, and the polishing device is characterized in that a dust through hole is formed in the polishing wheel, a dust collecting cavity communicated with the dust through hole is arranged in a shell of the polishing device, a dust collecting pipe communicated with the dust collecting cavity is further arranged on the grab handle, the dust collecting device of any one of claims 1 to 6 is connected onto the dust collecting pipe, a high-pressure air inlet of a dust suction valve of the dust collecting device is connected with a high-pressure air source through a pipeline, and a dust discharge hole of the dust suction valve is communicated with a dust collecting box or a dust collecting bag through a pipeline.

9. A polishing device comprises a grab handle, a hand push plate and a polishing plate, and is characterized in that a dust through hole is formed in the polishing plate, a dust collecting cavity communicated with the dust through hole is formed between the hand push plate and the polishing plate, a dust collecting pipe communicated with the dust collecting cavity is further arranged on the grab handle, the dust collecting device of any one of claims 1 to 6 is connected onto the dust collecting pipe, a high-pressure air inlet of a dust suction valve of the dust collecting device is connected with a high-pressure air source through a pipeline, and a dust discharge hole of the dust suction valve is communicated with a dust collecting box or a dust collecting bag through a pipeline.

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