CN111687727A - Dustproof structure of pneumatic grinding device - Google Patents
Dustproof structure of pneumatic grinding device Download PDFInfo
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- CN111687727A CN111687727A CN202010098523.XA CN202010098523A CN111687727A CN 111687727 A CN111687727 A CN 111687727A CN 202010098523 A CN202010098523 A CN 202010098523A CN 111687727 A CN111687727 A CN 111687727A
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- air inlet
- air
- dust
- pneumatic
- connecting part
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- 238000000227 grinding Methods 0.000 title claims abstract description 34
- 230000000903 blocking effect Effects 0.000 claims abstract description 20
- 230000000694 effects Effects 0.000 claims abstract description 11
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 241000309551 Arthraxon hispidus Species 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 33
- 238000005498 polishing Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000001238 wet grinding Methods 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/12—Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A dust-proof structure of a pneumatic grinding device comprises: a body provided with a cavity; and an air flow connecting part, which is provided with an air inlet and an air outlet, wherein the air inlet is provided with a press button; a pressing plate connected with the pressing button to control the pressing button; a pneumatic motor arranged at the cavity; the rotary disc is arranged at the pneumatic motor, a connecting through hole communicated with the outside is arranged between the rear end of the press button of the air inlet of the air flow connecting part of the body and the cavity, the rotary disc is in a long hole shape, and the tail end of the rotary disc is provided with a blocking end; a check device, which is arranged at the assembly perforation and has a check effect by corresponding to the blocking end; therefore, a dust-proof structure of a pneumatic polishing apparatus is provided, and more particularly, a dust-proof structure of a pneumatic polishing apparatus is provided to counteract negative pressure generated when the polishing apparatus stops rotating by communicating an inner space, thereby preventing dust and moisture from being sucked by the negative pressure.
Description
Technical Field
The present invention relates to a dust-proof structure of a pneumatic polishing device, and more particularly, to a dust-proof structure of a pneumatic polishing device, which can counteract the negative pressure generated when the polishing device stops rotating by communicating an inner space, thereby preventing dust and moisture from being sucked by the negative pressure.
Background
Nowadays, the related manufacturers of pneumatic tools commonly set a dust suction structure on the grinding machine tool to prevent dust from scattering and being clamped inside the machine tool by sucking and concentrating dust in the grinding process, but in this way, the dust is possibly accumulated at the grinding disc and the power assembly due to negative pressure generated by rotation driving, so that when the grinding machine tool is used backwards, the grinding machine tool may cause continuous friction with the dust in the rotation process and gradually scald, and internal components of the grinding machine tool are more easily damaged; moreover, the environment of the grinding machine tool is not only dry grinding, but also wet grinding, and the negative pressure is more likely to cause moisture to enter, so that the internal precision components are rusted, locked and broken down, thereby improving the maintenance frequency, not only being troublesome and inconvenient, but also increasing the use cost;
therefore, more manufacturers have developed a "grinding machine tool" as shown in fig. 10, which is disclosed in taiwan patent No. I622460, and includes a grinding machine body 71 and a grinding disc 72 connected to the grinding machine body 71, the grinding machine body 71 is provided with a pressure chamber 73 facing the grinding disc 72, and an air inlet pipe 711 is provided corresponding to the pressure chamber 73, a pressure relief gap 74 communicating with the pressure chamber 73 is formed between the grinding machine body 71 and the grinding disc 72, the air inlet pipe 711 introduces a high-pressure gas into the pressure chamber 73, the pressure chamber 73 is in a positive pressure environment by the high-pressure gas, and the high-pressure gas is continuously released from the pressure relief gap 74 to limit external dust from entering the pressure chamber 73. Therefore, the grinding machine tool can prevent dust from accumulating in the pressure chamber 73, and can also effectively prevent moisture from entering the pressure chamber 73 when the grinding machine tool is used for wet grinding, so that the connecting part of the grinding machine body 71 and the grinding disc 72 is prevented from being rusted.
According to the above, although the pneumatic grinder is provided with the dust collector to help to suck and concentrate the dust during grinding and polishing operations, the dust collector is driven by a pneumatic method during the use process, so that the main shaft generates negative pressure during rotation, and the dust is possibly sucked into the main shaft, so that the dust is easy to accumulate and be clamped, the use efficiency is gradually reduced, the disassembly and the arrangement are inconvenient, and the user is troubled, the dust entering the main shaft is more likely to damage the bearing, the rotation smoothness is reduced, the ground dust is more likely to deteriorate and agglomerate for a long time, the bearing at the main shaft is damaged and needs to be replaced, and the grinding tool machine of taiwan invention No. I622460 is provided with a pressure chamber 73 by the grinding disc 72 of the grinding machine body 71, and is continuously filled with high-pressure gas to prevent the dust from invading, however, the structure of the dust collector replaces the positive pressure state of the dust collecting part, so that dust cannot be collected through dust collection, and the dust collector needs to be additionally used through another dust collecting device, so that the high-pressure gas is dispersed from the inside to the outside in use, and the economic benefit is not met, therefore, the dust collector still has great improvement space for the industry development which needs to be changed from time to time.
The present inventors have made these and other studies and studies based on many years of experience in this field, and have combined with the theory to provide a reasonable and effective solution to the above-mentioned shortcomings.
Disclosure of Invention
The main purposes of the invention are as follows: to provide a dust-proof structure of a pneumatic polishing device, and more particularly, to a structure that counteracts negative pressure generated when the polishing device stops rotating by communicating an inner space, thereby preventing dust and moisture from being sucked by the negative pressure.
To achieve the above object, the present invention provides a dust-proof structure of a pneumatic polishing apparatus, comprising: a body, which is provided with a cavity, and an accommodating space is arranged inside the body: an airflow connecting part which is provided with an air inlet and an air outlet and is respectively communicated with the accommodating space of the cavity, and the air inlet is provided with a press button which is arranged at the upper end of the air inlet and is connected to the inner side for opening and closing the air inlet; a pressure plate which is assembled at the upper end of the airflow connecting part through a shaft column and is connected with the pressure button of the air inlet to control the pressure button; a pneumatic motor, pivoted in the containing space of the cavity and provided with a driving area, arranged at the upper end of the pneumatic motor and communicated with the air inlet and the air outlet, and used for allowing air flow to flow in from the air inlet and flow out from the air outlet through the driving area to drive the pneumatic motor to rotate; the connecting part is arranged at the bottom of the pneumatic motor; a rotary disk, is equipped with one and connects to establish the end and connect the connecting portion department of locating this pneumatic motor, its characterized in that: the rear end of the press button of the air inlet of the air flow connecting part of the body is provided with an assembling through hole communicated with the outside until the cavity, the assembling through hole is in a long hole shape, and the tail end of the assembling through hole is provided with a blocking end; the non-return device is pivoted at the assembly perforation and is in a movable state, is provided with a leakage stop end and a flow end, has a stop effect by the corresponding of the leakage stop end and the blocking end, and ensures that the non-return device is in a stop state at the assembly perforation by air pressure when the air inlet is used for air inlet.
A dust-proof structure of a pneumatic grinding device comprises: a body, which is provided with a cavity, and an accommodating space is arranged inside the body: an airflow connecting part which is provided with an air inlet and an air outlet and is respectively communicated with the accommodating space of the cavity, and the air inlet is provided with a press button which is arranged at the upper end of the air inlet and is connected to the inner side for opening and closing the air inlet; a pressure plate which is assembled at the upper end of the airflow connecting part through a shaft column and is connected with the pressure button of the air inlet to control the pressure button; a pneumatic motor, pivoted in the containing space of the cavity and provided with a driving area, arranged at the upper end of the pneumatic motor and communicated with the air inlet and the air outlet, and used for allowing air flow to flow in from the air inlet and flow out from the air outlet through the driving area to drive the pneumatic motor to rotate; the connecting part is arranged at the bottom of the pneumatic motor; a rotary disk, is equipped with one and connects to establish the end and connect the connecting portion department of locating this pneumatic motor, its characterized in that: the inner side of the air outlet of the air flow connecting part of the body is provided with a group of through holes, the group of through holes are in a long hole shape, the tail end of the group of through holes is provided with a blocking end, and the group of through holes are arranged between the pressing button of the air inlet and the cavity so as to be communicated between the air inlet and the air outlet; the non-return device is pivoted at the assembly perforation and is in a movable state, is provided with a leakage stop end and a flow end, has a stop effect by the corresponding of the leakage stop end and the blocking end, and ensures that the non-return device is in a stop state at the assembly perforation by air pressure when the air inlet is used for air inlet.
The invention has the following effects: a cavity is arranged by the body, and an accommodating space is arranged in the cavity: an airflow connecting part which is provided with an air inlet and an air outlet and is respectively communicated with the accommodating space of the cavity, and the air inlet is provided with a press button which is arranged at the upper end of the air inlet and is connected to the inner side for opening and closing the air inlet; a pressure plate which is assembled at the upper end of the airflow connecting part through a shaft column and is connected with the pressure button of the air inlet to control the pressure button; the pneumatic motor is pivoted in the accommodating space of the cavity and is provided with a driving area which is arranged at the upper end of the pneumatic motor and communicated with the air inlet and the air outlet, and air flows enter from the air inlet and flow out from the air outlet through the driving area to drive the pneumatic motor to rotate; the connecting part is arranged at the bottom of the pneumatic motor; a rotary disk, which is provided with a connecting end and is connected with the connecting part of the pneumatic motor: the section from the rear end of the press button to the cavity of the air inlet of the air flow connecting part of the body is provided with an assembling through hole communicated with the outside, the assembling through hole is in a long hole shape, and the tail end of the assembling through hole is provided with a blocking end; a check device, which is pivoted at the assembly perforation and is in a displaceable state, is provided with a leakage stop end and a flow end, and has a check effect by the corresponding of the leakage stop end and the blocking end, so that when the air inlet is used for air inlet, the check device is in a check state at the assembly perforation by air pressure; when the air motor generates negative pressure through the rotation generated by inertia after stopping air intake, the check end of the check device is in an open state and is communicated with the inner space to balance the negative pressure; therefore, a dust-proof structure of a pneumatic polishing apparatus is provided, and more particularly, a dust-proof structure of a pneumatic polishing apparatus is provided to counteract negative pressure generated when the polishing apparatus stops rotating by communicating an inner space, thereby preventing dust and moisture from being sucked by the negative pressure.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is an exploded view of the present invention.
Fig. 4 is an exploded schematic view (two) of the present invention.
FIG. 5 is a partial enlarged view (one) of the operation state of the preferred embodiment of the present invention.
FIG. 6 is a partial enlarged view of the operation state of the preferred embodiment of the present invention.
FIG. 7 is a schematic cross-sectional view of another preferred embodiment of the present invention.
FIG. 8 is a partial enlarged view (one) of the operation state of another preferred embodiment of the present invention.
FIG. 9 is a partial enlarged view of the second embodiment of the present invention.
Fig. 10 is a conventional partial cross-sectional view.
Detailed Description
Referring to fig. 1 to 4, a dust-proof structure of a pneumatic polishing apparatus according to the present invention includes:
a body 1, which has a cavity 11, and an accommodating space 111 therein: an airflow connecting part 12, which is provided with an air inlet 121 and an air outlet 122, and is respectively communicated with the accommodating space 111 of the cavity 11, wherein the air inlet 121 is provided with a press button 1211, which is arranged at the upper end of the air inlet 121 and is connected to the inner side for opening and closing the air inlet 121; a pressure plate 13, which is connected to the upper end of the airflow connecting portion 12 through a shaft 131, and is connected to the pressure button 1211 of the air inlet 121 for controlling the pressure button 1211; a pneumatic motor 2, pivotally disposed in the accommodating space 111 of the cavity 11, having a driving area 21, disposed at the upper end of the pneumatic motor 2 and communicated with the air inlet 121 and the air outlet 122, for air to flow in from the air inlet 121 and to flow out from the air outlet 122 through the driving area 21 to drive the pneumatic motor 2 to rotate; and a connecting part 22 arranged at the bottom of the pneumatic motor 2; a rotary disk 3, which is provided with a connecting end 31 and is connected to the connecting part 22 of the pneumatic motor 2;
a connecting through hole 123 communicating with the outside is formed between the rear end of the pressure button 1211 of the air inlet 121 of the air flow connecting part 12 of the body 1 and the cavity 11, the connecting through hole 123 is in a long hole shape, and a blocking end 1231 is arranged at the tail end of the connecting through hole 123; a check device 4, pivotally disposed at the assembling through hole 123 and capable of moving, having a leakage-stopping end 41 and a flow-through end 42, and having a check effect by the corresponding relationship between the leakage-stopping end 41 and the blocking end 1231, so that when the air inlet 121 is filled with air, the check device 4 is in a check state at the assembling through hole 123 by air pressure;
with the above structure, the following is further described:
wherein a dust-proof device 5 is further sleeved between the connecting portion 22 of the pneumatic motor 2 and the rotating disk 3, and has an outer ring shell 51 connected to the bottom end of the body 1; and a connecting pipe 52 connected to the outer ring housing 51 at the side end thereof;
wherein the set of through holes 123 are further connected to the inner side of the air outlet 122 and communicate with the outer end, so that the air pressure in the driving area 21 flows to the air outlet 122 and flows back through the set of through holes 123 to balance the air pressure;
wherein the rear end of the airflow connecting portion 12 is provided with a connecting component 124 having two pivot holes 1241 corresponding to the air inlet 121 and the air outlet 122;
when the joint assembly 124 is installed therein, a quick coupling 125 is further installed at the pivot hole 1241 connected to the air inlet 121, and a leakage-stopping washer 1251 is abutted against the air inlet 121; a supporting member 1252 fixed by the leakage-stopping washer 1251; a clamping spring 1253, which is abutted against one end of the abutting member 1252; and a joint head 1254, which is disposed at the pivot hole 1241 of the joint assembly 124 for fast assembling the airflow tube;
when the joint assembly 124 is provided, a slow flow cover 126 is provided at the outer end of the pivot hole 1241 connected with the air outlet 122, so as to slow down the speed of the air flow when the air flow flows out from the air outlet 122;
wherein the air inlet 121 is further provided with a regulating valve 6 at the side end thereof, which has a control end 61 and is penetrated through the outer side end of the air inlet 121 and pivoted at the inner edge of the air inlet 121; and a dial button 62 disposed at the outer end of the air inlet 121 and connected to the control end 61;
wherein the control end 61 of the regulating valve 6 is provided with a stopping ring groove 611, the upper end of the air flow connecting portion 12 is further provided with a stopping opening 1212 corresponding to the stopping ring groove 611, and the regulating valve 6 is positioned and pivoted at the air inlet 121 by a bolt 63 which is arranged at the stopping opening 1212 and is clamped against the stopping ring groove 611 of the control end 61 of the regulating valve 6;
wherein the leakage-stopping end 41 of the non-return device 4 is further provided with a leakage-stopping ring 411 for increasing the sealing degree when abutting against the sealing ring;
in addition, a protective cover 10 is further arranged at the outer end of the body 1 for stable gripping;
with reference to fig. 5 to 9 and fig. 3 to 4, a preferred embodiment of the dust-proof structure of the pneumatic polishing apparatus of the present invention is described in detail as follows:
the invention is used for grinding and polishing, etc., the body 1 is provided with a cavity 11, and the interior of the cavity is provided with an accommodating space 111: an airflow connecting part 12, which is provided with an air inlet 121 and an air outlet 122, and is respectively communicated with the accommodating space 111 of the cavity 11, wherein the air inlet 121 is provided with a press button 1211, which is arranged at the upper end of the air inlet 121 and is connected to the inner side for opening and closing the air inlet 121; a pressure plate 13, which is connected to the upper end of the airflow connecting portion 12 through a shaft 131, and is connected to the pressure button 1211 of the air inlet 121 for controlling the pressure button 1211; a pneumatic motor 2, pivotally disposed in the accommodating space 111 of the cavity 11, having a driving area 21, disposed at the upper end of the pneumatic motor 2 and communicated with the air inlet 121 and the air outlet 122, for air to flow in from the air inlet 121 and to flow out from the air outlet 122 through the driving area 21 to drive the pneumatic motor 2 to rotate; and a connecting part 22 arranged at the bottom of the pneumatic motor 2; a rotary disc 3, which is provided with a connecting end 31 and is connected to the connecting portion 22 of the pneumatic motor 2, and an assembling through hole 123 communicating with the outside is arranged between the rear end of the button 1211 of the air inlet 121 of the air flow connecting portion 12 of the main body 1 and the cavity 11, the assembling through hole 123 is in a long hole shape, and a blocking end 1231 is arranged at the tail end; a check device 4, pivotally disposed at the assembling through hole 123 and capable of moving, having a leakage-stopping end 41 and a flow-through end 42, and having a check effect by the corresponding relationship between the leakage-stopping end 42 and the blocking end 1231, so that when the air inlet 121 is filled with air, the check device 4 is in a check state at the assembling through hole 123 by air pressure; therefore, when in use, the pressing plate 13 is pressed to open the pressing button 1211 to enable the connected high-pressure gas to flow in, so that the air pressure presents a positive pressure and continuously drives the driving area 21 of the pneumatic motor 2 to rotate, the connecting part 22 drives the rotating disc 3 to rotate and be used for grinding or polishing, the high-pressure gas continuously flows out from the air outlet 122, the leakage stop end 41 of the check device 4 further abuts against the blocking end 1231 of the assembly perforation 123 of the air flow connecting part 12 of the body 1 through the circulation of the high-pressure gas to enable the check device to present a closed state without leakage to cause too low pressure and power reduction, when a user releases the pressing plate 13 to enable the pressing button 1211 to stop the circulation of the high-pressure gas, the pneumatic motor 2 in rotation continuously rotates according to inertia, so that a negative pressure condition is generated inside, and the check device 4 presents an open state, the air inlet 121 is communicated with the outside to further balance the pressure, so that the dust is not sucked from the rotating disc 3 to the driving area 21 due to negative pressure, and the service life of a component clamped between the driving area 21 and the connecting part 22 is not shortened;
in another aspect of the present invention, the assembly through hole 123 of the airflow connecting portion 12 of the main body 1 is further connected to the inner side of the air outlet 122, and further disposed between the pressure button 1211 of the air inlet 121 and the cavity 11 to communicate between the air inlet 121 and the air outlet 122, when the air inlet 121 is filled with air, the check device 4 is in a supporting state at the assembly through hole 123 by air pressure, so as to block the assembly through hole 123 communicating between the air inlet 121 and the air outlet 122; therefore, when in use, the pressing plate 13 is pressed to open the pressing button 1211 to enable the connected high-pressure gas to flow in, so that the gas pressure presents a positive pressure and continuously drives the driving area 21 of the pneumatic motor 2 to rotate, the connecting part 22 drives the rotating disc 3 to rotate and be used for grinding or polishing, the high-pressure gas continuously flows out from the gas outlet 122, the leakage stop end 41 of the check device 4 further abuts against the blocking end 1231 of the assembly perforation 123 of the gas flow connecting part 12 of the body 1 through the circulation of the high-pressure gas to enable the check device to present a closed state without leakage to cause too low pressure and power reduction, when a user releases the pressing plate 13 to enable the pressing button 1211 to stop the high-pressure gas from flowing, the pneumatic motor 2 in rotation continuously rotates according to inertia, so that a negative pressure condition is generated inside, and the check device 4 presents an open state, the two ends of the air inlet 121 and the air outlet 122 are communicated, so that the pressure is further balanced, the pressure is balanced by means of the air flow circulation flowing from the cavity 11 to the air outlet 122, the dust is prevented from being sucked from the rotating disc 3 at the bottom end by negative pressure to cause clamping, the service life is shortened, and the air with the dust at the outer end can be further prevented from flowing in;
therefore, according to the present invention, the dust-proof device 5 can be further sleeved between the connecting portion 22 of the pneumatic motor 2 and the rotating disk 3, and is connected to the bottom end of the main body 1 through the outer ring shell 51, and the connecting pipe 52 is connected to a dust-collecting device, so that when dust is generated, the dust can be collected and concentrated by the dust-collecting device;
in addition, especially, the outer end of the main body 1 can be further provided with the protective sleeve 10, so that a user can grasp the protective sleeve 10 in use, and the difficulty in grasping caused by the transmission of the torque force generated by rotation to the main body 1 is prevented;
furthermore, a joint component 124 is disposed at the rear end of the airflow connecting portion 12, and has two pivot holes 1241 corresponding to the air inlet 121 and the air outlet 122; the quick coupling 125 is disposed at the pivot hole 1241 for connecting the air inlet 121, and the leakage-stopping gasket 1251, the abutting member 1252, the clamping spring 1253 and the joint head 1254 are abutted toward the air inlet 121, and the pipeline connected with high-pressure air can be used as the specification of the quick coupling and is used for quickly connecting the air flow pipe; the slow flow cover 126 is further disposed at the outer end of the pivot hole 1241 connected to the air outlet 122 to slow down the flow of the air from the air outlet 122, so as to prevent the dust from scattering around due to the air flow during grinding and polishing;
the adjusting valve 6 is further disposed at the side end of the air inlet 121, the control end 61 is inserted from the outer side end of the air inlet 121 and pivoted to the inner edge of the air inlet 121, the stop ring groove 611 is further disposed at the control end 61, the stop port 1212 for the plug pin 63 to be inserted and positioned is further disposed at the upper end of the air flow connecting portion 12, the plug pin 63 is disposed at the stop port 1212 and clamped against the stop ring groove 611 of the control end 61 of the adjusting valve 6, so that the adjusting valve 6 is positioned and pivoted to the air inlet 121 to control the air inflow of the control end 61 by using the dial button 62, and the rotating speed of the pneumatic motor 2 is changed to be used for grinding different objects; the regulating valve 6 is further abutted against the assembly through hole 123, and the check device 4 is further in a corresponding state with the regulating valve 6, so that a connecting hole 612 is further formed at the control end 61 of the regulating valve 6 to connect the assembly through hole 123 with the air inlet 121, and the check device 4 can be communicated with the air inlet 121 and the air outlet 122 through the connecting hole 612 when being in an open state;
by the above description, the effects of the present invention are: the body 1 has a cavity 11, and an accommodating space 111 is formed therein: an airflow connecting part 12, which is provided with an air inlet 121 and an air outlet 122, and is respectively communicated with the accommodating space 111 of the cavity 11, wherein the air inlet 121 is provided with a press button 1211, which is arranged at the upper end of the air inlet 121 and is connected to the inner side for opening and closing the air inlet 121; a pressure plate 13, which is connected to the upper end of the airflow connecting portion 12 through a shaft 131, and is connected to the pressure button 1211 of the air inlet 121 for controlling the pressure button 1211; a pneumatic motor 2, pivotally disposed in the accommodating space 111 of the cavity 11, having a driving area 21, disposed at the upper end of the pneumatic motor 2 and communicated with the air inlet 121 and the air outlet 122, for air to flow in from the air inlet 121 and to flow out from the air outlet 122 through the driving area 21 to drive the pneumatic motor 2 to rotate; and a connecting part 22 arranged at the bottom of the pneumatic motor 2; a rotary plate 3, which is provided with a connecting end 31 and is connected to the connecting portion 22 of the pneumatic motor 2: an assembly through hole 123 communicating with the outside is formed between the rear end of the push button 1211 of the air inlet 121 of the air flow connecting part 12 of the body 1 and the cavity 11, the assembly through hole 123 is in a long hole shape, and a blocking end 1231 is arranged at the tail end of the assembly through hole 123; a check device 4, pivotally disposed at the assembling through hole 123 and capable of moving, having a leakage-stopping end 41 and a flow-through end 42, and having a check effect by the corresponding relationship between the leakage-stopping end 41 and the blocking end 1231, so that when the air inlet 121 is filled with air, the check device 4 is in a check state at the assembling through hole 123 by air pressure; when the air motor 2 generates negative pressure through the rotation generated by inertia after stopping air intake, the check end 41 of the check device 4 is in an open state and communicated with the inner space to balance the negative pressure; therefore, a dust-proof structure of a pneumatic polishing apparatus is provided, and more particularly, a dust-proof structure of a pneumatic polishing apparatus is provided to counteract negative pressure generated when the polishing apparatus stops rotating by communicating an inner space, thereby preventing dust and moisture from being sucked by the negative pressure.
From the foregoing, it is understood that the present invention is capable of being widely applied to various industries, and has advantages of advancement and novelty. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited by the above description; therefore, all the equivalent changes and modifications made according to the claims of the present invention should be covered by the scope of the present invention.
Claims (10)
1. A dust-proof structure of a pneumatic grinding device comprises: a body, which is provided with a cavity, and an accommodating space is arranged inside the body: an airflow connecting part which is provided with an air inlet and an air outlet and is respectively communicated with the accommodating space of the cavity, and the air inlet is provided with a press button which is arranged at the upper end of the air inlet and is connected to the inner side for opening and closing the air inlet; a pressure plate which is assembled at the upper end of the airflow connecting part through a shaft column and is connected with the pressure button of the air inlet to control the pressure button; a pneumatic motor, pivoted in the containing space of the cavity and provided with a driving area, arranged at the upper end of the pneumatic motor and communicated with the air inlet and the air outlet, and used for allowing air flow to flow in from the air inlet and flow out from the air outlet through the driving area to drive the pneumatic motor to rotate; the connecting part is arranged at the bottom of the pneumatic motor; a rotary disk, is equipped with one and connects to establish the end and connect the connecting portion department of locating this pneumatic motor, its characterized in that: the rear end of the press button of the air inlet of the air flow connecting part of the body is provided with an assembling through hole communicated with the outside until the cavity, the assembling through hole is in a long hole shape, and the tail end of the assembling through hole is provided with a blocking end; the non-return device is pivoted at the assembly perforation and is in a movable state, is provided with a leakage stop end and a flow end, has a stop effect by the corresponding of the leakage stop end and the blocking end, and ensures that the non-return device is in a stop state at the assembly perforation by air pressure when the air inlet is used for air inlet.
2. A dust-proof structure of a pneumatic grinding device comprises: a body, which is provided with a cavity, and an accommodating space is arranged inside the body: an airflow connecting part which is provided with an air inlet and an air outlet and is respectively communicated with the accommodating space of the cavity, and the air inlet is provided with a press button which is arranged at the upper end of the air inlet and is connected to the inner side for opening and closing the air inlet; a pressure plate which is assembled at the upper end of the airflow connecting part through a shaft column and is connected with the pressure button of the air inlet to control the pressure button; a pneumatic motor, pivoted in the containing space of the cavity and provided with a driving area, arranged at the upper end of the pneumatic motor and communicated with the air inlet and the air outlet, and used for allowing air flow to flow in from the air inlet and flow out from the air outlet through the driving area to drive the pneumatic motor to rotate; the connecting part is arranged at the bottom of the pneumatic motor; a rotary disk, is equipped with one and connects to establish the end and connect the connecting portion department of locating this pneumatic motor, its characterized in that: the inner side of the air outlet of the air flow connecting part of the body is provided with a group of through holes, the group of through holes are in a long hole shape, the tail end of the group of through holes is provided with a blocking end, and the group of through holes are arranged between the pressing button of the air inlet and the cavity so as to be communicated between the air inlet and the air outlet; the non-return device is pivoted at the assembly perforation and is in a movable state, is provided with a leakage stop end and a flow end, has a stop effect by the corresponding of the leakage stop end and the blocking end, and ensures that the non-return device is in a stop state at the assembly perforation by air pressure when the air inlet is used for air inlet.
3. The dust-proof structure of a pneumatic grinder as set forth in claim 1 or 2, wherein: wherein a dustproof device is further sleeved between the connecting part of the pneumatic motor and the rotating disk, and the dustproof device is provided with an outer ring shell which is connected with the bottom end of the body; and a connecting pipe connected to the outer ring housing side end.
4. The dust-proof structure of a pneumatic grinder as set forth in claim 1, wherein: the group of through holes are connected with the inner side of the air outlet and communicated with the outer end, so that the air pressure in the driving area flows to the air outlet and flows back through the group of through holes to balance the air pressure.
5. The dust-proof structure of a pneumatic grinder as set forth in claim 1 or 2, wherein: wherein the rear end of the airflow connecting part is provided with a joint component which is provided with two pivot holes corresponding to the air inlet and the air outlet.
6. The dust-proof structure of a pneumatic grinder as set forth in claim 5, wherein: when the joint component is arranged, a quick joint is arranged at the pivot hole connected with the air inlet, and a leakage stopping gasket is abutted against the air inlet; a propping piece which is clamped and fixed by the leakage-stopping washer; the clamping spring is abutted against one end of the abutting piece; and a joint head which is arranged at the pivot hole of the joint component and is used for quickly assembling the airflow pipe.
7. The dust-proof structure of a pneumatic grinder as set forth in claim 5, wherein: when the joint component is arranged, a slow flow cover is arranged at the outer end of the pivot hole connected with the air outlet, so that the speed of the air flow is slowed down when the air flow flows out from the air outlet.
8. The dust-proof structure of a pneumatic grinder as set forth in claim 1 or 2, wherein: wherein the air inlet is further provided with an adjusting valve at the side end, the adjusting valve is provided with a control end, and the adjusting valve is penetrated through the outer side end of the air inlet and is pivoted at the inner edge of the air inlet; and a toggle button arranged at the outer side end of the air inlet and connected with the control end.
9. The dust-proof structure of a pneumatic grinder as set forth in claim 8, wherein: the control end of the regulating valve is provided with a backstop ring groove, the upper end of the airflow connecting part is provided with a backstop opening corresponding to the backstop ring groove, and the regulating valve is positioned and pivoted at the air inlet by means of a bolt which is arranged at the backstop opening and clamped against the backstop ring groove at the control end of the regulating valve.
10. The dust-proof structure of a pneumatic grinder as set forth in claim 1 or 2, wherein: wherein the check end of the check device is further provided with a check ring for increasing the tightness when the check ring is abutted.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108108895 | 2019-03-15 | ||
| TW108108895A TWI681841B (en) | 2019-03-15 | 2019-03-15 | Dust-proof structure of pneumatic grinding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111687727A true CN111687727A (en) | 2020-09-22 |
| CN111687727B CN111687727B (en) | 2021-08-20 |
Family
ID=69942758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010098523.XA Expired - Fee Related CN111687727B (en) | 2019-03-15 | 2020-02-18 | Dustproof structure of pneumatic grinding device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111687727B (en) |
| TW (1) | TWI681841B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770920A (en) * | 2021-09-14 | 2021-12-10 | 中船黄埔文冲船舶有限公司 | Dust extraction and polisher of polisher |
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| CN2100319U (en) * | 1991-06-05 | 1992-04-01 | 谭美田 | Pneumatic carving and grinding machine with compound damping device |
| US5582541A (en) * | 1995-08-24 | 1996-12-10 | Hutchins Manufacturing Company | Abrading tool with water feed and removal system |
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| CN113770920A (en) * | 2021-09-14 | 2021-12-10 | 中船黄埔文冲船舶有限公司 | Dust extraction and polisher of polisher |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111687727B (en) | 2021-08-20 |
| TWI681841B (en) | 2020-01-11 |
| TW202035065A (en) | 2020-10-01 |
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