CN114367361A - Bottom protection device for protecting spiral stirrer - Google Patents
Bottom protection device for protecting spiral stirrer Download PDFInfo
- Publication number
- CN114367361A CN114367361A CN202111567888.3A CN202111567888A CN114367361A CN 114367361 A CN114367361 A CN 114367361A CN 202111567888 A CN202111567888 A CN 202111567888A CN 114367361 A CN114367361 A CN 114367361A
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- China
- Prior art keywords
- spiral
- bolt
- shaft
- spiral shaft
- protection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 40
- 238000000227 grinding Methods 0.000 claims abstract description 14
- 230000001681 protective effect Effects 0.000 claims description 37
- 238000003825 pressing Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/16—Mills in which a fixed container houses stirring means tumbling the charge
- B02C17/163—Stirring means
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention belongs to the technical field of vertical stirring mills, and particularly discloses a bottom protection device for protecting a spiral stirrer, wherein the bottom of a spiral shaft of the spiral stirrer is detachably connected with a protection cover, the protection cover is wrapped at the bottom and the lower part of the spiral shaft and comprises a protection sleeve and a protection plate, the protection sleeve is sleeved at the lower part of the outer circular surface of the spiral shaft, the lower end of the protection sleeve is connected with the protection plate, the protection plate is horizontally attached at the bottom of the spiral shaft, the protection plate is connected with the spiral shaft through a bolt, a sealing assembly is arranged between the end part of the bolt and the bottom surface of the protection plate, the protection cover is arranged at the end part of the bolt and outside the sealing assembly to protect the bottom and the lower part of the spiral shaft from being abraded and corroded by ore pulp and grinding media, the bottom of the spiral shaft is prevented from being abraded and corroded, the service life of the spiral shaft is prolonged, the shutdown rate of equipment is reduced, the operation rate of the equipment is improved, and the stable operation of the equipment is ensured, the maintenance time of the mill is reduced, manpower and material resources are saved, and the benefit of equipment manufacturers is increased.
Description
Technical Field
The invention belongs to the technical field of vertical stirring mills, and particularly discloses a bottom protection device for protecting a spiral stirrer.
Background
The spiral stirrer is a device for converting the electric energy of a motor into the mechanical energy borne by materials, and is widely used in power systems of industrial equipment such as a vertical spiral stirring mill and a spiral conveying device, wherein the vertical spiral stirring mill is used for enabling a grinding medium in the stirring mill to move to generate impact, shearing and grinding by means of the stirring action of the spiral stirrer, and the grinding materials are uniformly dispersed by the energy transmitted by the spiral stirrer through the multidimensional movement of the medium and the rotation movement of the medium, so that the high-efficiency fine grinding is achieved, and the service life of the spiral stirrer is very important for the efficiency and the stable operation of the whole stirring mill.
In the grinding area, the medium surface pressure is composed of medium weight pressure and extrusion force generated by centrifugal motion, because of low speed, the medium surface pressure can be similar to the medium weight pressure, the medium surface pressure is gradually increased from top to bottom in the grinding mill cylinder body, the grinding effect on the bottommost layer filled with the medium is strongest, coarse particles are effectively ground due to sedimentation at the lower part of the cylinder body, meanwhile, a spiral lining plate at the bottom of the spiral stirrer is quickly worn as a wearing part, the spiral lining plate at the bottom of the spiral stirrer is generally replaced for six months, the replacement time is gradually increased upwards in sequence, the middle lining plate is 12 months, the uppermost part reaches 18 months, the spiral lining plate is combined on the stirrer, the stirrer is not a wearing part, the service life of the stirrer is ensured to be 15-20 years, the whole stirrer is covered with a wear-resistant and acid-alkali-resistant rubber layer, the bottom of the stirrer is covered with a rubber bottom plate, protect whole agitator not receive wearing and tearing, long-term operation, the epaxial rubber of bottom stirring easily wears to drop, expose the metal level, the metal level suffers wearing and tearing, if wearing and tearing are serious, damage the welding seam between layer board and the (mixing) shaft, the layer board supports the weight that does not play bottom spiral welt, whole agitator will be changed, the agitator is changed and needs appurtenance and installation and dismantlement are more loaded down with trivial details, the required time is longer, lead to the agitator to change and waste time and energy, the expense of agitator itself is higher simultaneously, so the cost of agitator change is higher, if wearing and tearing are not serious, can be in original rubber liner department, cut off old rubber liner, paste new rubber liner again, rubber liner pastes the technology loaded down with trivial details, need the higher personnel of pasting of technique, waste time and energy, so adopt the bottom screw axis of corresponding measure protection spiral agitator, it is indiscernible to carve.
Disclosure of Invention
In order to solve the problems in the background art, the invention discloses a bottom protection device for protecting a spiral stirrer, which comprises a protection cover, wherein the protection cover is used for protecting the bottom of a spiral shaft and the lower part of the spiral shaft from being abraded by grinding media and materials, prolonging the service life of the spiral shaft and ensuring the stable operation of a system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a protective cover is detachably connected to the bottom of a spiral shaft of the spiral stirrer and wraps the bottom and the lower portion of the spiral shaft to protect the bottom and the lower portion of the spiral shaft from being abraded and corroded by ore pulp and grinding media.
Further, a bottom protection device for protecting spiral agitator, safety cover include protective case and protection shield, and the protective case cover is established in the lower part of the outer disc of screw axis, and the protective case lower extreme is connected with the protection shield, and the protection shield horizontal subsides are established in the screw axis bottom, pass through bolted connection between protection shield and the screw axis, are equipped with seal assembly between bolt tip and protection shield bottom surface, are equipped with the visor at bolt tip and seal assembly dustcoat.
Further, the bottom protection device for protecting the spiral stirrer is characterized in that the protection sleeve is spiral, and the rotating direction and the screw pitch of the protection sleeve are the same as those of the spiral lining plate of the spiral shaft.
Further, the inner circle diameter of the protection sleeve is slightly larger than the outer diameter of the spiral shaft of the bottom protection device for protecting the spiral stirrer.
Furthermore, the bottom protection device for protecting the spiral stirrer is provided with a plurality of spiral grooves at intervals along the circumferential direction on the protection sleeve, the spiral direction and the thread pitch of the spiral grooves are the same as those of the spiral lining plate of the spiral shaft, and the width of the spiral grooves is slightly larger than that of the welding line between the supporting plate and the spiral shaft.
Further, the bottom protection device for protecting the spiral stirrer is provided with a step hole which is small in top and large in bottom in the middle of the protection plate, a bolt penetrates through the step hole, a spring washer, a sealing pressing ring and a sealing washer are sequentially arranged between the end of the bolt and a shaft shoulder of the step hole from bottom to top, and the spring washer, the sealing pressing ring and the sealing washer are respectively sleeved on the bolt.
Compared with the prior art, the invention has the beneficial effects that:
the bottom protection device for protecting the spiral stirrer is characterized in that the bottom of a spiral shaft of the spiral stirrer is detachably connected with a protection cover, the protection cover wraps the bottom and the lower part of the spiral shaft, the bottom and the lower part of the spiral shaft are protected from being abraded and corroded by ore pulp and grinding media, the bottom of the spiral shaft is prevented from being abraded and corroded, the service life of the spiral shaft is prolonged, the outage rate of equipment is reduced, the operation rate of the equipment is improved, the stable operation of the equipment is ensured, the maintenance time of a grinding machine is reduced, manpower and material resources are saved, and the benefit of equipment manufacturers is increased.
Drawings
FIG. 1 is a schematic view of the installation position of the bottom protective device of the present invention;
FIG. 2 is a schematic cross-sectional view of a bottom protective device according to the present invention;
FIG. 3 is a perspective view of the protective cover of the present invention;
FIG. 4 is a schematic sectional view of the protective cover of the present invention;
in the above figures: 1-a protective cover; 1.1-protective sleeve; 1.2-protection plate; 1.3-connecting pipe; 2-bolt; 3-a spring washer; 4, sealing a pressing ring; 5-sealing washer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to a bottom protection device for protecting a spiral stirrer, which is described in detail by combining with accompanying drawings 1-4 and is suitable for the spiral stirrer with one or more spiral supporting plates in spiral shape arranged on the circumferential surface of the spiral stirrer spiral shaft, wherein, the bottom protection device for protecting the spiral stirrer is described by taking an example that two spiral supporting plates in spiral shape are symmetrically arranged on the circumferential surface of the spiral stirrer spiral shaft, a protection cover 1 is detachably connected to the bottom of the spiral stirrer spiral shaft, and the protection cover 1 is wrapped on the bottom and the lower part of the spiral shaft to protect the bottom and the lower part of the spiral shaft from being abraded and corroded by ore pulp and grinding media, thereby prolonging the service life of the spiral shaft and ensuring the stable operation of the system.
As an optional design, preferably, the bottom protection device for protecting the spiral stirrer, the protection cover 1 comprises a protection sleeve 1.1 and a protection plate 1.2, the protection sleeve 1.1 is sleeved at the lower part of the outer circular surface of the spiral shaft, the lower end of the protection sleeve 1.1 is connected with the protection plate 1.2, the protection plate 1.2 is horizontally attached to the bottom of the spiral shaft, the protection plate 1.2 is connected with the spiral shaft through a bolt 2, a sealing component is arranged between the end part of the bolt 2 and the bottom surface of the protection plate 1.2, the sealing component seals a gap between the contact surface of the end part of the bolt 2 and the bottom surface of the protection plate 1.2, prevents ore pulp from entering a bolt hole of the spiral shaft through a mounting hole of the bolt 2 to corrode and block the threaded hole, avoids the blockage of the threaded hole on the spiral shaft when the protection cover is replaced due to blockage of the threaded hole, the protection cover is arranged at the end part of the bolt 2 and outside the sealing component to avoid the corrosion of the bolt 2 and the sealing component by the ore pulp on the bolt 2 and the sealing component, protection bolt 2 and seal assembly prevent that bolt 2 and seal assembly from being worn and torn, avoid the bolt head to fracture under multiple actions such as wearing and tearing, corruption, bottom safety cover weight and agitator revolving force and cause the visor to break away from the agitator, block dead agitator, lead to the agitator rotatory can't, and then cause serious quality accident.
As an optional design, preferably, the bottom protection device for protecting the spiral stirrer is characterized in that the protection sleeve 1.1 is spiral, the turning direction and the pitch of the protection sleeve 1.1 are the same as those of the spiral lining plate of the spiral shaft, the diameter of the inner circle of the protection sleeve 1.1 is slightly larger than the outer diameter of the spiral shaft, and when the bottom protection device is installed, the protection sleeve 1.1 is pushed upwards and simultaneously spirals along the turning direction of the spiral supporting plate, so that the protection sleeve 1.1 is sleeved outside the stirring shaft.
As an optional design, preferably, the bottom protection device for protecting the helical agitator is characterized in that a plurality of helical spiral grooves are circumferentially arranged on the protection sleeve 1.1 at intervals, the turning direction and the pitch of each spiral groove are the same as those of the helical liner plate of the helical shaft, the width of each spiral groove is slightly larger than the width of a welding seam between the supporting plate and the helical shaft, the size of each spiral groove ensures that the helical protection sleeve 1.1 is installed on the lower portion of the helical shaft, and the protection sleeve 1.1 is screwed into the lower portion of the helical agitator along with the turning direction of the helical supporting plate.
As an optional design, preferably, the bottom protection device for protecting the helical agitator is characterized in that a step hole with a small top and a large bottom is arranged in the middle of a protection plate 1.2, a bolt 2 penetrates through the step hole, a spring washer 3, a sealing pressing ring 4 and a sealing washer 5 are sequentially arranged between the end of the bolt 2 and a shaft shoulder of the step hole from bottom to top, the spring washer 3, the sealing pressing ring 4 and the sealing washer 5 are respectively sleeved on the bolt 2, the spring washer 3 increases the friction force between the bolt 2 and the sealing pressing ring 4 of a joint surface to prevent the loosening of a fastening bolt caused by the vibration of the agitator in operation, the locking function is achieved, the sealing pressing ring 4 and the sealing washer 5 are combined together to be used as a sealing element, the sealing pressing ring 4 is made of stainless steel 304, the groove structure is used for installing the sealing washer 5 and matching the sealing washer 5 to play a sealing role, the sealing washer 5 is made of acid and alkali resistant rubber and placed below the sealing pressing ring 4, the thickness of the spiral groove is 5mm thicker than that of a groove of a sealing pressing ring 4, the outer diameter of the spiral groove is consistent with that of the groove of the sealing pressing ring 4, the inner diameter of the spiral groove is 1mm smaller than that of a spiral shaft, the spiral groove is combined together to facilitate sealing and pressing, a connecting pipe 1.3 is arranged below the middle part of a protective plate 1.2, the connecting pipe 1.3 is sleeved outside a bolt 2, a spring washer 3, the sealing pressing ring 4 and a sealing washer 5 to prevent ore pulp from corroding the bolt 2, the spring washer 3, the sealing pressing ring 4 and the sealing washer 5, the protective sleeve 1.1, the protective plate 1.2 and the connecting pipe 1.3 are all made of stainless steel 304, a bolt hole and a corresponding countersunk hole are firstly independently machined on a steel plate, then welding grooves are cut on the protective sleeve 1.1, the protective plate 1.2 and the connecting pipe 1.3, and finally the three are welded together, a spiral groove is cut on the protective sleeve 1.1, and the spiral groove is slightly wider than a welding seam between the supporting plate and the spiral shaft, the notched spiral of helicla flute is unanimous with pitch, cut out big fillet on protective casing 1.1 upper portion, prevent to cut the rubber slab on the (mixing) shaft, protective casing 1.1 inner circle diameter is greater than the screw axis external diameter, unilateral reservation 10~15mm, protective casing 1.2 excircle diameter is unanimous with protective casing 1.1 excircle, connecting pipe 1.3 welds in protective casing 1.2 bottom center department, connecting pipe 1.3 mouth of pipe diameter is greater than the telescopic external diameter of mounting bolt 2, unilateral reservation is greater than 10mm, connecting pipe 1.3 length is greater than closes the back bolt head height.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. A bottom protection device for protecting a helical agitator, characterized in that: the bottom of the spiral stirrer spiral shaft is detachably connected with a protective cover, and the protective cover wraps the bottom and the lower part of the spiral shaft to protect the bottom and the lower part of the spiral shaft from being abraded and corroded by ore pulp and grinding media.
2. The bottom guard for protecting a helical agitator as set forth in claim 1, wherein: the protective cover comprises a protective sleeve and a protective plate, the protective sleeve is sleeved on the lower portion of the outer circular surface of the screw shaft, the lower end of the protective sleeve is connected with the protective plate, the protective plate is horizontally attached to the bottom of the screw shaft, the protective plate is connected with the screw shaft through a bolt, a sealing assembly is arranged between the end portion of the bolt and the bottom surface of the protective plate, and a protective cover is arranged on the end portion of the bolt and the outer cover of the sealing assembly.
3. The bottom guard for protecting a helical agitator as set forth in claim 2, wherein: the protective sleeve is spiral, and the rotation direction and the screw pitch of the protective sleeve are the same as those of the spiral lining plate of the spiral shaft.
4. The bottom guard for protecting a helical agitator as set forth in claim 3, wherein: the diameter of the inner circle of the protective sleeve is slightly larger than the outer diameter of the spiral shaft.
5. The bottom guard for protecting a helical agitator as set forth in claim 3, wherein: the protective sleeve is provided with a plurality of spiral grooves at intervals along the circumferential direction, the rotating direction and the thread pitch of the spiral grooves are the same as those of the spiral lining plate of the spiral shaft, and the width of each spiral groove is slightly larger than that of a welding seam between the supporting plate and the spiral shaft.
6. The bottom guard for protecting a helical agitator as set forth in claim 3, wherein: the middle part of the protective plate is provided with a step hole which is small at the top and big at the bottom, a bolt penetrates through the step hole, a spring washer, a sealing pressing ring and a sealing washer are sequentially arranged between the end part of the bolt and a shaft shoulder of the step hole from bottom to top, and the spring washer, the sealing pressing ring and the sealing washer are respectively sleeved on the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567888.3A CN114367361A (en) | 2021-12-21 | 2021-12-21 | Bottom protection device for protecting spiral stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567888.3A CN114367361A (en) | 2021-12-21 | 2021-12-21 | Bottom protection device for protecting spiral stirrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114367361A true CN114367361A (en) | 2022-04-19 |
Family
ID=81139930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111567888.3A Pending CN114367361A (en) | 2021-12-21 | 2021-12-21 | Bottom protection device for protecting spiral stirrer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114367361A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3678979A (en) * | 1969-12-17 | 1972-07-25 | Illinois Tool Works | Sealing washer |
| GB1438171A (en) * | 1972-07-21 | 1976-06-03 | Puchy D P W | Protective and decorative covering and retaining elements for fastening components |
| JPH0577609U (en) * | 1992-03-19 | 1993-10-22 | 株式会社芝浦製作所 | Fastener protection device |
| KR20110026886A (en) * | 2009-09-09 | 2011-03-16 | 박재욱 | Bolt and nut protection cap |
| CN203485391U (en) * | 2013-09-29 | 2014-03-19 | 成都盛帮密封件股份有限公司 | Die structure of bonded washer |
| CN106838315A (en) * | 2017-03-24 | 2017-06-13 | 长葛市航天密封科技有限公司 | A kind of Novel anti-leakage bonded washer |
| KR20190116785A (en) * | 2018-04-05 | 2019-10-15 | 김승용 | Bolt And Nut Protection Cap |
| CN210207075U (en) * | 2019-06-24 | 2020-03-31 | 北方重工富勒（沈阳）矿业有限公司 | Tower mill screw axis protection device |
| CN211359161U (en) * | 2019-10-29 | 2020-08-28 | 河北钢铁集团矿业有限公司 | Double-helix main shaft wear-resistant protection structure of mining vertical mill |
| CN212177636U (en) * | 2020-06-02 | 2020-12-18 | 贵州成智重工科技有限公司 | Fastening and sealing structure of vibrating equipment |
| CN213669625U (en) * | 2020-11-10 | 2021-07-13 | 沈阳盛世五寰科技有限公司 | Tower mill screw axis bottom protection device |
| CN113441258A (en) * | 2021-06-28 | 2021-09-28 | 北方重工富勒（沈阳）矿业有限公司 | Tower mill screw axis protection device |
-
2021
- 2021-12-21 CN CN202111567888.3A patent/CN114367361A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3678979A (en) * | 1969-12-17 | 1972-07-25 | Illinois Tool Works | Sealing washer |
| GB1438171A (en) * | 1972-07-21 | 1976-06-03 | Puchy D P W | Protective and decorative covering and retaining elements for fastening components |
| JPH0577609U (en) * | 1992-03-19 | 1993-10-22 | 株式会社芝浦製作所 | Fastener protection device |
| KR20110026886A (en) * | 2009-09-09 | 2011-03-16 | 박재욱 | Bolt and nut protection cap |
| CN203485391U (en) * | 2013-09-29 | 2014-03-19 | 成都盛帮密封件股份有限公司 | Die structure of bonded washer |
| CN106838315A (en) * | 2017-03-24 | 2017-06-13 | 长葛市航天密封科技有限公司 | A kind of Novel anti-leakage bonded washer |
| KR20190116785A (en) * | 2018-04-05 | 2019-10-15 | 김승용 | Bolt And Nut Protection Cap |
| CN210207075U (en) * | 2019-06-24 | 2020-03-31 | 北方重工富勒（沈阳）矿业有限公司 | Tower mill screw axis protection device |
| CN211359161U (en) * | 2019-10-29 | 2020-08-28 | 河北钢铁集团矿业有限公司 | Double-helix main shaft wear-resistant protection structure of mining vertical mill |
| CN212177636U (en) * | 2020-06-02 | 2020-12-18 | 贵州成智重工科技有限公司 | Fastening and sealing structure of vibrating equipment |
| CN213669625U (en) * | 2020-11-10 | 2021-07-13 | 沈阳盛世五寰科技有限公司 | Tower mill screw axis bottom protection device |
| CN113441258A (en) * | 2021-06-28 | 2021-09-28 | 北方重工富勒（沈阳）矿业有限公司 | Tower mill screw axis protection device |
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Application publication date: 20220419 |