CN203804768U - Pipe inner-wall polishing head - Google Patents
Pipe inner-wall polishing head Download PDFInfo
- Publication number
- CN203804768U CN203804768U CN201420238327.8U CN201420238327U CN203804768U CN 203804768 U CN203804768 U CN 203804768U CN 201420238327 U CN201420238327 U CN 201420238327U CN 203804768 U CN203804768 U CN 203804768U
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- CN
- China
- Prior art keywords
- tube
- expansion tube
- support tube
- walls
- duct
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- Withdrawn - After Issue
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Abstract
The utility model relates to a pipe inner-wall polishing head used for polishing inner walls of pipes. The pipe inner-wall polishing head comprises a support barrel, an expansion tube and abrasive cloth. A tube support fixing opening is formed in the front of the support barrel, and an inflating nozzle opening is formed in the rear of the support barrel. The expansion tube is a closed flexible hose helically wound on the outer periphery of the support barrel, an inflating nozzle is arranged at the rear end of the expansion tube, the front end of the expansion tube is fixed to the tube support fixing opening of the support barrel, and the inflating nozzle at the rear end of the expansion tube penetrates the inflating nozzle opening of the support barrel to be fixed to the support barrel. The abrasive cloth wraps the outline surface of the expansion tube in a winding manner. The pipe inner-wall polishing head is reliable in performance without deadlock caused by overheating, is good in polishing quality without causing scratches to inner walls of pipes due to impurity left in the pipes, and further, is convenient to operate, thus great time for adjusting matching between the abrasive cloth and the inner walls of pipes is saved and work efficiency is improved greatly.
Description
Technical field
The utility model belongs to pipeline processing equipment, relates in particular to a kind of inner-walls of duct rubbing head.
Background technology
In fine chemistry industry equipment, as pharmacy, food apparatus, the stainless steel pipes of use need to carry out inwall polishing, to ensure the pure of product quality.When inner-walls of duct needs polishing, the most frequently used method is that polishing emery cloth is wrapped in outside support tube, the rubbing head external diameter that has been wound around polishing emery cloth need to be slightly larger than the internal diameter of the pipeline that needs polishing, by driving shaft, rotate, be pressed in pipeline, there is too many uncertain factor with coordinating of internal diameter of the pipeline in polishing emery cloth, conventionally depends on operating personnel's experience; Once it is improper that polishing cloth is wound around, rubbing head can be stuck in pipeline, just need to do over again, and causes temporal waste; As entered impurity in pipeline, also can scratch inner-walls of duct; In operating process, the injury that is very easily squeezed of operating personnel's both hands, operating efficiency is low simultaneously, does not meet civilized construction requirement.
Summary of the invention
The purpose of this utility model is the technical scheme that proposes a kind of inner-walls of duct rubbing head, facilitates rubbing head operation, increases work efficiency, and prevents that rubbing head is overheated or locked.
To achieve these goals, the technical solution of the utility model is: a kind of inner-walls of duct rubbing head, for inner-walls of duct is carried out to polishing; Comprise support tube, expansion tube, polishing emery cloth; It is characterized in that, described support tube is the cylinder that two ends are provided with shelves ring, in the front portion of support tube, is provided with stay pipe fixing port, is provided with the perforate of pressurising mouth at the rear portion of support tube; Described expansion tube is the airtight flexible pipe of a velamen pressurising, in the rear end of expansion tube, be provided with pressurising mouth, expansion tube is looped around on the external diameter of support tube with helical form, the front end of expansion tube is fixed on the described stay pipe fixing port of support tube, and the described pressurising mouth of expansion tube rear end passes the described pressurising mouth perforate of support tube and is fixed on support tube; Described polishing emery cloth is around being wrapped on the outer surface of expansion tube.
Further, the outline diameter after being looped around described expansion tube on support tube external diameter and fully expanding is greater than at least 2mm of polished internal diameter of the pipeline; The external diameter of the shelves ring at described support tube two ends is less than at least 2mm of polished internal diameter of the pipeline.
Further, in order to guarantee polishing effect, the number of turns that described expansion tube is looped around on support tube external diameter is no less than 3 whole circles; By the shelves loop contacts at the sidewall of the expansion tube two ends outmost turns after pressurising and described support tube two ends.
Further, in order to facilitate pressurising and the release pressure of expansion tube, described expansion tube is the rubber tube for inflating, and described pressurising mouth is charging connector.
Further, for fear of because the fricative heat of polishing makes expansion tube excessive expansion, described expansion tube is the rubber tube for water-filling, and described pressurising mouth is water nozzle.
Further, for expansion tube is stably fixed on support tube, on the external diameter of described support tube, be provided with impression vertically.
Further, in order to strengthen the heat dispersion of rubbing head, the material of described support tube is aluminium alloy, on the internal diameter of support tube, is provided with heat sink.
Further, for make polishing emery cloth in polishing process with stable remaining on expansion tube, the described polishing emery cloth around being wrapped on expansion tube at least overlaps 15mm at seam crossing.
The beneficial effects of the utility model are: reliable working performance, is not prone to overheated locked; Quality of finish is good, can prevent from scratching inner-walls of duct because leaving impurity in pipeline; Easy to operate, do not need to expend the plenty of time for adjusting coordinating between polishing emery cloth and inner-walls of duct, significantly improved operating efficiency.
Below in conjunction with drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Fig. 1 is structure broken away view of the present utility model;
Fig. 2 is the utility model assembly drawing;
Fig. 3 is that the utility model has completed the polishing head structure figure around parcel polishing emery cloth;
Fig. 4 is that the utility model expansion tube release pressure, rubbing head insert schematic diagram in pipeline;
Fig. 5 is that the utility model expands to expansion tube pressurising, expansion tube external diameter, makes polishing emery cloth at circumference, contact and keep the schematic diagram of certain pressure completely with inner-walls of duct;
Fig. 6 is the motion schematic diagram that the utility model rubbing head carries out polishing operation in pipeline.
The specific embodiment
As shown in Figure 1, Figure 2, Fig. 3, a kind of inner-walls of duct rubbing head, for carrying out polishing to inner-walls of duct; Comprise support tube 10, expansion tube 20, polishing emery cloth 30; Described support tube is the cylinder that two ends are provided with shelves ring 11, in the front portion of support tube, is provided with stay pipe fixing port 12, is provided with pressurising mouth perforate 13 at the rear portion of support tube; Described expansion tube is the airtight flexible pipe of a velamen pressurising, rear end 21 at expansion tube is provided with pressurising mouth 22, expansion tube is looped around on the external diameter of support tube with helical form, the front end 23 of expansion tube is fixed on the described stay pipe fixing port of support tube, and the described pressurising mouth of expansion tube rear end passes the described pressurising mouth perforate of support tube and is fixed on support tube; Described polishing emery cloth is around being wrapped on the outer surface of expansion tube.
Outline diameter after being looped around described expansion tube on support tube external diameter and fully expanding is greater than at least 2mm of polished internal diameter of the pipeline; The external diameter of the shelves ring at described support tube two ends is less than at least 2mm of polished internal diameter of the pipeline.
The number of turns that described expansion tube is looped around on support tube external diameter is no less than 3 whole circles; By the shelves loop contacts at the sidewall of the expansion tube two ends outmost turns after pressurising and described support tube two ends.
Described expansion tube can be the rubber tube for inflating, and described pressurising mouth is charging connector.
Described expansion tube can also be the rubber tube for water-filling, and described pressurising mouth is water nozzle.
On the external diameter of described support tube, be provided with impression 14 vertically.
The material of described support tube can be aluminium alloy, is provided with heat sink 15 on the internal diameter of support tube.
The described polishing emery cloth around being wrapped on expansion tube at least overlaps S=15mm at seam crossing.
The inside nominal diameter of common polished pipeline is less than DN150.
Embodiment mono-:
As shown in Figure 1, Figure 2, Fig. 3, a kind of inner-walls of duct rubbing head, for carrying out polishing to inner-walls of duct; Comprise support tube 10, expansion tube 20, polishing emery cloth 30.
Described support tube is the cylinder that two ends are provided with shelves ring 11, in the front portion of support tube, is provided with stay pipe fixing port 12, and described fixing port is one can pass the not circular hole of the expansion tube of pressurising, and Circularhole diameter is 11mm, is provided with pressurising mouth perforate 13 at the rear portion of support tube.In order to increase the thermal conductivity of support tube, improve the heat dispersion of rubbing head, support tube adopts aluminium alloy manufacture, is provided with heat sink 15 on the internal diameter of support tube.In order to increase the CONTACT WITH FRICTION performance of support tube and expansion tube, expansion tube is stably fixed on support tube, on the external diameter of support tube, be provided with impression 14 vertically.
Before the front end of support tube is provided with, connect end plate 40, the center of front connection end plate is provided with axis hole 41, on front connection end plate, is provided with Connection Card hub 42, and the internal diameter of Connection Card hub and support tube coordinates, makes front connection on the front end face that end plate is arranged on support tube; On front connection end plate, be also provided with the passage 43 for ventilating.
After the rear end of support tube is provided with, connect end plate 50, the center of rear connection end plate is provided with axis hole 51, on rear connection end plate, is provided with Connection Card hub 52, and the internal diameter of Connection Card hub and support tube coordinates, makes rear connection on the rear end face that end plate is arranged on support tube; On rear connection end plate, be also provided with the passage 53 for ventilating.In the axis hole of rear connection end plate, be provided with keyway 54, on the end face of rear connection end plate, be provided with bearing pin 55.On the rear end face of support tube, be provided with pin-and-hole 16, the bearing pin of rear connection end plate inserts in the pin-and-hole on support tube rear end face, makes rear connection end plate can drive support tube to rotate.
Rubbing head is arranged on a polishing driving shaft 60, and polishing driving shaft is provided with and the rear Step Shaft 61 that is connected the shaft hole matching of end plate, is provided with keyway 62 on described Step Shaft, at the front end of polishing driving shaft, is provided with connecting thread 63.In the keyway of described Step Shaft, be provided with flat key 64, Step Shaft penetrates in the axis hole of rear connection end plate, and the step surface of Step Shaft is pressed on the end face 56 of rear connection end plate axis hole; Described flat key snaps in the keyway in rear connection end plate axis hole, makes polishing driving shaft can drive rear connection end plate to rotate; The front axis hole through front connection end plate of polishing driving shaft, is fixed on front connection end plate and rear connection end plate on support tube by a nut 65.
Described expansion tube can be the rubber tube for inflating, and in the rear end 21 of expansion tube, is provided with charging connector 22.Expansion tube is looped around on the external diameter of support tube with helical form; The front end 23 of expansion tube, through the stay pipe fixing port of support tube, enters the internal diameter of support tube, and plays a tying 24 at front end, and expansion tube front end is fixed on support tube; The described pressurising mouth of expansion tube rear end passes the described pressurising mouth perforate of support tube and is fixed on support tube, and the end face of support tube is stretched out in the termination of pressurising mouth; By the shelves loop contacts at the sidewall of the expansion tube two ends outmost turns after pressurising and described support tube two ends.
Described polishing emery cloth is around being wrapped on the outer surface of expansion tube, and the rubbing surface of polishing emery cloth, contains the face of the grains of sand outside.
The pipeline that the rubbing head of the present embodiment is 62mm～65mm for polishing internal diameter, in the present embodiment:
Outer diameter D=the 50mm of support tube, support tube shelves ring outer diameter D 1=59mm.
External diameter after expansion tube expands is 10mm, and the number of turns being looped around on support tube external diameter is 5 whole circles, and the outline diameter being looped around after the expansion tube expansion on support tube external diameter is 70mm.
Polishing emery cloth adopts the polishing abrasive belt of commercially available rolling, during use, according to pipeline specifications and the lap of splice, carry out cutting, thickness is 2.0mm～2.5mm, the granularity of the grains of sand is chosen according to rough polishing and fine polishing, and rough polishing is generally selected 60 order abrasive bands, order～80, and smart throwing will be selected 200 order abrasive bands, order～600 according to required precision, required precision reaches minute surface requirement, can when last essence is thrown, smear abrasive pastes.
For make polishing emery cloth in polishing process with stable remaining on expansion tube, around the polishing emery cloth being wrapped on expansion tube, at seam crossing, overlap S=20mm.
The expansion tube of the present embodiment adopts inflating rubber pipe, and pressurising and the release pressure of expansion tube are easy to operate.
Embodiment bis-:
The present embodiment is a kind of improvement of embodiment mono-.
An inner-walls of duct rubbing head, for carrying out polishing to inner-walls of duct; Comprise support tube, expansion tube, polishing emery cloth.
Described expansion tube is the rubber tube for water-filling, and described pressurising mouth is water nozzle.
Because the thermal coefficient of expansion of water is well below gas, the present embodiment is applicable to the pipeline that polishing time is long, length is larger, can avoid expansion tube excessive expansion, pressure being increased cause polishing frictional force excessive and locked or damage ducted rubbing head because of the fricative heat of polishing.
Embodiment tri-:
An inner-walls of duct finishing method, this method is that the inner-walls of duct rubbing head described in use embodiment mono-carries out the method for polishing to inner-walls of duct.Pressurising medium in expansion tube is air; The internal diameter of polished pipeline is 62.5mm, and length is 2.2m.
As Fig. 3, Fig. 4, Fig. 5, Fig. 6, described rubbing head is arranged on a polishing driving shaft and by polishing driving shaft and drives inner-walls of duct polishing; Said method comprising the steps of:
Step 1, as shown in Figure 3, by described polishing emery cloth with counterclockwise (P3) around being wrapped on the outer surface of expansion tube; Polishing sand cloth length is 216mm, and polishing emery cloth overlaps 20mm at seam crossing.
Step 2, as shown in Figure 4, opens pressurising mouth, emits the gas in expansion tube, and expansion tube is shunk; By the parcel being completed by step 1 the rubbing head of polishing emery cloth insert in pipeline 70;
Step 3, as shown in Figure 5, by described pressurising mouth, to expansion tube pressurising, expansion tube internal pressure raises, and expansion tube external diameter expands, and polishing emery cloth is contacted at circumference completely with inner-walls of duct, and make the air pressure in expansion tube remain on gauge pressure 25KPa; Shelves loop contacts by the sidewall 25 of the expansion tube two ends outmost turns after pressurising with described support tube two ends.
Step 4, as shown in Figure 6, start polishing driving shaft, polishing driving shaft drives rubbing head (P1) rotation clockwise centered by conduit axis, and the direction of rotation of rubbing head and polishing emery cloth are around the opposite direction of rubbing head, and rotating speed is 280 revs/min, simultaneously, rubbing head moves (P2) as straight-line feed along conduit axis, straight-line speed be 10 millimeters/turn, complete 48 seconds inwall polishing used times of a pipeline.
In step 4, the speed of related movement of polishing emery cloth and inner-walls of duct is 0.92 meter per second, and polishing emery cloth is 19.5:1 in the linear velocity of inner-walls of duct tangent to periphery direction and the ratio of axially-movable linear velocity.
In the present embodiment, the polishing of inner-walls of duct is carried out on the polishing carrier of customization, and described polishing carrier is provided with two stainless steel support columns parallel with polished pipeline, and its length and polished steel pipe length are close.Polished steel pipe is placed between two stainless steel support columns, by the external diameter of two stainless steel support columns, is supported.In polishing operation, can make its quality requirement that reaches polishing according to rotating speed and the feed speed of polishing process and polishing effect adjustment rubbing head, prevent that rubbing head from occurring overheated simultaneously; Air themperature in expansion tube should be controlled at below 90 ℃ conventionally; If desired can be to carrying out forced ventilation heat radiation in pipeline, or at pipeline outer wall spray cooling.
Embodiment tetra-:
An inner-walls of duct finishing method, this method is a kind of improvement of embodiment tri-, uses the inner-walls of duct rubbing head described in embodiment bis-inner-walls of duct to be carried out to the method for polishing.Pressurising medium in expansion tube is water; The internal diameter of polished pipeline is 65mm, and length is 4.0m.
Said method comprising the steps of:
Step 1, as shown in Figure 3, by described polishing emery cloth with counterclockwise (P3) around being wrapped on the outer surface of expansion tube; Polishing sand cloth length is 225mm, and polishing emery cloth overlaps 21mm at seam crossing.
Step 2, as shown in Figure 4, opens pressurising mouth, emits the water in expansion tube, and expansion tube is shunk; By the parcel being completed by step 1 the rubbing head of polishing emery cloth insert in pipeline;
Step 3, as shown in Figure 5, by described pressurising mouth to expansion tube pressurising; Expansion tube internal pressure raises, and expansion tube external diameter expands, and polishing emery cloth is contacted at circumference completely with inner-walls of duct, and make the air pressure in expansion tube remain on gauge pressure 35KPa.
Step 4, as shown in Figure 6, start polishing driving shaft, polishing driving shaft drives rubbing head (P1) rotation clockwise centered by conduit axis, and the direction of rotation of rubbing head and polishing emery cloth are around the opposite direction of rubbing head, and rotating speed is 250 revs/min, simultaneously, rubbing head moves (P2) as straight-line feed along conduit axis, straight-line speed be 10 millimeters/turn, complete 1 minute and the 36 seconds inwall polishing used time of a pipeline.
In step 4, the speed of related movement of polishing emery cloth and inner-walls of duct is 0.85 meter per second, and polishing emery cloth is 20:1 in the linear velocity of inner-walls of duct tangent to periphery direction and the ratio of axially-movable linear velocity.
The polishing of inner-walls of duct is carried out on pipeline polishing carrier, can make its quality requirement that reaches polishing according to rotating speed and the feed speed of polishing process and polishing effect adjustment rubbing head, prevents that rubbing head from occurring overheated simultaneously; Coolant-temperature gage in expansion tube should be controlled at below 75 ℃ conventionally; If desired can be to carrying out forced ventilation heat radiation in pipeline, or at pipeline outer wall spray cooling.
Claims (8)
1. an inner-walls of duct rubbing head, for carrying out polishing to inner-walls of duct; Comprise support tube, expansion tube, polishing emery cloth; It is characterized in that, described support tube is the cylinder that two ends are provided with shelves ring, in the front portion of support tube, is provided with stay pipe fixing port, is provided with the perforate of pressurising mouth at the rear portion of support tube; Described expansion tube is the airtight flexible pipe of a velamen pressurising, in the rear end of expansion tube, be provided with pressurising mouth, expansion tube is looped around on the external diameter of support tube with helical form, the front end of expansion tube is fixed on the described stay pipe fixing port of support tube, and the described pressurising mouth of expansion tube rear end passes the described pressurising mouth perforate of support tube and is fixed on support tube; Described polishing emery cloth is around being wrapped on the outer surface of expansion tube.
2. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, the outline diameter after being looped around described expansion tube on support tube external diameter and fully expanding is greater than at least 2mm of polished internal diameter of the pipeline; The external diameter of the shelves ring at described support tube two ends is less than at least 2mm of polished internal diameter of the pipeline.
3. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, the number of turns that described expansion tube is looped around on support tube external diameter is no less than 3 whole circles; By the shelves loop contacts at the sidewall of the expansion tube two ends outmost turns after pressurising and described support tube two ends.
4. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, described expansion tube is the rubber tube for inflating, and described pressurising mouth is charging connector.
5. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, described expansion tube is the rubber tube for water-filling, and described pressurising mouth is water nozzle.
6. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, is provided with impression vertically on the external diameter of described support tube.
7. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, the material of described support tube is aluminium alloy, on the internal diameter of support tube, is provided with heat sink.
8. a kind of inner-walls of duct rubbing head according to claim 1, is characterized in that, the described polishing emery cloth around being wrapped on expansion tube at least overlaps 15mm at seam crossing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238327.8U CN203804768U (en) | 2014-05-12 | 2014-05-12 | Pipe inner-wall polishing head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238327.8U CN203804768U (en) | 2014-05-12 | 2014-05-12 | Pipe inner-wall polishing head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203804768U true CN203804768U (en) | 2014-09-03 |
Family
ID=51443577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420238327.8U Withdrawn - After Issue CN203804768U (en) | 2014-05-12 | 2014-05-12 | Pipe inner-wall polishing head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203804768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921210A (en) * | 2014-05-12 | 2014-07-16 | 北京燕华工程建设有限公司 | Polishing head for inner wall of pipeline and polishing method |
| CN107022959A (en) * | 2017-06-07 | 2017-08-08 | 铁科腾跃科技有限公司 | A kind of concrete-bridge expansion joint facade grinding head |
-
2014
- 2014-05-12 CN CN201420238327.8U patent/CN203804768U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921210A (en) * | 2014-05-12 | 2014-07-16 | 北京燕华工程建设有限公司 | Polishing head for inner wall of pipeline and polishing method |
| CN103921210B (en) * | 2014-05-12 | 2016-03-02 | 北京燕华工程建设有限公司 | A kind of inner-walls of duct rubbing head and finishing method |
| CN107022959A (en) * | 2017-06-07 | 2017-08-08 | 铁科腾跃科技有限公司 | A kind of concrete-bridge expansion joint facade grinding head |
| CN107022959B (en) * | 2017-06-07 | 2018-11-30 | 铁科腾跃科技有限公司 | A kind of concrete-bridge expansion joint facade grinding head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140903 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |