CN110201440B - Paper changing expansion and contraction shaft expanding and contracting method of plate filter - Google Patents
Paper changing expansion and contraction shaft expanding and contracting method of plate filter Download PDFInfo
- Publication number
- CN110201440B CN110201440B CN201910433123.7A CN201910433123A CN110201440B CN 110201440 B CN110201440 B CN 110201440B CN 201910433123 A CN201910433123 A CN 201910433123A CN 110201440 B CN110201440 B CN 110201440B
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- shaft sleeve
- mandrel
- contracting
- crescent
- expanding
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008602 contraction Effects 0.000 title description 7
- 238000004804 winding Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 239000010731 rolling oil Substances 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
Abstract
The invention relates to the technical field of auxiliary equipment of plate filters, in particular to a paper-changing collapsible shaft collapsible method of a plate filter, which comprises a set of collapsible device, wherein the collapsible device comprises a left shaft sleeve, a mandrel, a right shaft sleeve and at least two crescent plates, the mandrel is a cylinder with a four-section stepped variable-diameter structure, the left end of the mandrel is axially contracted to the left three times, the left shaft sleeve is axially positioned by a shaft shoulder and a nut in threaded connection with the left end of the mandrel, the right shaft sleeve is sleeved at the right end of the mandrel, at least two crescent plates are arranged between the left shaft sleeve and the right shaft sleeve, the crescent plates are arranged at intervals along the circumferential direction of the mandrel and are connected with the left shaft sleeve and the right shaft sleeve in a detachable manner, the collapsible device is assembled, then roll paper and coil unloading operation is sequentially carried out, finally, the crescent plates, the left shaft sleeve and the nut are assembled back, the collapsible method is simple, the free introduction of a filter paper head is convenient, the roll paper is smoothly unloaded, the maintenance is convenient, the labor intensity is reduced, and the work efficiency is improved.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment of plate filter, in particular to a paper changing expansion and contraction shaft expansion and contraction method of a plate filter.
Background
The plate filter is an auxiliary device in an aluminum and copper plate rolling mill unit, is used for filtering rolling oil used in the rolling process, when the rolling oil is filtered, diatomite filter aid in a mixing box of the plate filter is intermittently conveyed to an inlet of a filter pump, the filter pump conveys the mixed liquid of the diatomite filter aid and the dirty oil in a dirty oil tank to the plate filter, clean rolling oil filtered by the plate filter flows back to a clean oil tank, unclean rolling oil flows back to the dirty oil tank, an oil supply pump conveys the rolling oil in the clean oil tank to a nozzle, is sprayed to the surface of a roller for cooling and lubrication, and finally flows back to the dirty oil tank, so that periodic circulation is formed, the diatomite filter aid in the mixing box of the plate filter gradually reduces until the diatomite filter aid is used up along with the increase of the filtering time, at the moment, the thickness of the diatomite filter aid in the filtering box of the plate filter is about 20mm, and the diatomite filter aid in the filtering box must be replaced before the next circulation cycle begins is pulled out through the expansion and contraction shaft of a paper replacing device after the diatomite filter aid in the filtering box is dried.
The paper changing device of the plate filter is a main component of the plate filter, and at present, the paper changing of the large-flow plate filter mainly depends on the rotation mode of the expansion shaft, namely the diameter of the expansion device can be increased before the paper is rolled, and the diameter of the expansion device can be reduced after the paper is rolled, so that the rolled filter paper is convenient to take out; because the structural design of the existing collapsible shaft collapsible device is complex, the existing collapsible shaft is found to be complex in maintenance in the long-term use process, and the collapsible method is complex, so that the maintenance work is long in time consumption and low in production efficiency.
Disclosure of Invention
In order to solve the problems in the background technology, the invention discloses a paper changing expansion and contraction shaft expansion and contraction method of a plate filter, which is simple in structure, convenient to introduce the head of filter paper, capable of ensuring smooth running of roll paper and convenient to unload and maintain.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a paper-changing expansion-contraction method for plate filter includes such steps as providing a left sleeve, a mandrel with four stepped diameter-changing cylinders, a right sleeve with at least two crescent plates, axially and axially shrinking the left end of mandrel three times to left to form a shoulder, sleeving left and right sleeves at both ends of mandrel, arranging at least two crescent plates between left and right sleeves, the left end and the right end of the crescent plate are respectively corresponding to the left shaft sleeve and the right shaft sleeve and are detachably connected, the left shaft sleeve comprises a left inner shaft sleeve and a left outer shaft sleeve, the left inner shaft sleeve is sleeved at the left end of the mandrel, the two ends of the left inner shaft sleeve are fixed by a shaft shoulder and a nut in threaded connection with the mandrel, the left outer shaft sleeve is sleeved on the left inner shaft sleeve, the right end of the mandrel is in interference fit with the inner hole of the right shaft sleeve, the right shaft sleeve comprises a right inner shaft sleeve and a right outer shaft sleeve, the right inner shaft sleeve and the right outer shaft sleeve are sequentially sleeved and fixed at the right end of the mandrel,
the expanding and contracting method specifically comprises the following steps:
a. assembling the expansion device, namely assembling a left inner shaft sleeve and a left outer shaft sleeve into a left shaft sleeve, assembling the right end of a mandrel with the right inner shaft sleeve and the right outer shaft sleeve in an interference fit manner, fixedly connecting the right end of a crescent plate with the right shaft sleeve, sleeving the left shaft sleeve at the left end of the mandrel, fixedly connecting the left end of the crescent plate with the left shaft sleeve, and finally locking nuts, wherein the crescent plate is arranged at intervals along the circumferential direction of the mandrel and jointly surrounds a cylinder, and the diameter of the cylinder of the expansion device is the largest at the moment;
b. performing paper winding operation, inserting the end part of the filter paper into a gap between two crescent plates, rotating a mandrel, winding the filter paper, ending the paper winding, and cutting off the filter paper;
c. the coil stripping operation is carried out, the nut is loosened, the left shaft sleeve is taken down, coiled filter paper with the crescent plate clamped is taken down, at the moment, the diameter of the cylinder of the expansion device is reduced, and the crescent plate is taken out from the filter paper roll;
d. finally, a crescent plate, a left shaft sleeve and a nut are assembled back.
Further, the left inner shaft sleeve and the left outer shaft sleeve are of hollow tubular structures, the left inner shaft sleeve is sleeved at the left end of the mandrel, the right end of the left inner shaft sleeve is in abutting contact with one shaft shoulder, the left end of the left inner shaft sleeve is fixed through a nut in threaded connection with the mandrel, a convex annular baffle ring is arranged on the outer circular surface of the left end of the left inner shaft sleeve along the circumferential direction, a concave annular groove is arranged on the outer circular surface of the right end of the left inner shaft sleeve along the circumferential direction, a clamp spring is correspondingly arranged in the annular groove, the left outer shaft sleeve is sleeved on the left inner shaft sleeve and is positioned between the annular baffle ring and the annular groove, a concave dovetail groove is formed in the right end of the left outer shaft sleeve along the circumferential direction, and the left end of the crescent plate is inserted in the dovetail groove and is in clearance fit between the dovetail groove and the crescent plate.
Further, be equipped with the through-hole along the axial at right interior axle sleeve middle part, be equipped with the step hole along the axial at right outer axle sleeve middle part, the step hole includes left hole and right hole, and the internal diameter of left hole is greater than the internal diameter of right hole, and the equal interference fit of dabber right-hand member and through-hole, right hole is inserted to right interior axle sleeve right-hand member in the left hole, and the annular gap between right interior axle sleeve and right outer axle sleeve is inserted to crescent moon board right-hand member.
Further, the outer diameter of the right inner sleeve is tapered, and the outer diameter of the right inner sleeve is increased from left to right.
Further, pin holes penetrating through the side walls of the right outer shaft sleeve are formed in the outer circular surface of the left end of the right outer shaft sleeve at intervals along the circumferential direction, the positions of the pin holes correspond to the positions of joints between the adjacent crescent plates, and bolts are arranged in the pin holes.
Further, the left outer shaft sleeve is made of plastic materials.
Compared with the prior art, the invention has the beneficial effects that:
the invention discloses a roll-changing method for a roll, which is characterized in that a central spindle is a cylinder with a four-section stepped variable diameter structure, a left inner shaft sleeve and a left outer shaft sleeve are sleeved at the left end of the central spindle, the left inner shaft sleeve is axially positioned through a nut and a shaft shoulder, a concave dovetail groove is formed in the right end part of the left outer shaft sleeve along the circumferential direction, the left ends of the crescent plates are respectively inserted into the dovetail groove, the dovetail groove and the crescent plates are in clearance fit, a right inner shaft sleeve and a right outer shaft sleeve are sleeved at the right end of the central spindle, the right end of the central spindle is in interference fit with a through hole of the right inner shaft sleeve and a right inner hole of the right outer shaft sleeve, the right end of the crescent plate is inserted into a gap between the right inner shaft sleeve and the right outer shaft sleeve, a bolt is arranged in a pin hole of the outer circular surface of the left end of the right outer shaft sleeve, the pin hole corresponds to the position of a joint between the adjacent crescent plates, a certain gap is formed between the adjacent crescent plates, so that the free introduction of a filter paper head is convenient, roll is ensured, the crescent plates are arranged along the circumferential direction of the central spindle, and jointly enclose a cylinder, the outer diameter of the right inner shaft sleeve is tapered, and the outer diameter of the roll is changed from left to right cylinder, and after the roll is finished, the roll-changing method is simple, the working efficiency is convenient, and the working efficiency is reduced, and the maintenance is convenient, and the working cost is reduced.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is an isometric view of the present invention;
FIG. 3 is a cross-sectional view of the left inner sleeve of the present invention;
FIG. 4 is a cross-sectional view of the left outer sleeve of the present invention;
FIG. 5 is a front view of a mandrel in the present invention;
FIG. 6 is a side view of the crescent moon plate of the present invention;
FIG. 7 is a cross-sectional view of the right inner sleeve of the present invention;
FIG. 8 is a cross-sectional view of the right outer sleeve of the present invention;
in the above figures: 1-a nut; 2-left inner sleeve; 2.1-an annular baffle ring; 2.2-annular grooves; 3-left outer sleeve; 3.1-dovetail groove; 4-clamping springs; 5-a mandrel; 6-crescent moon plate; 7-right inner sleeve; 8-right outer sleeve; 8.1-pin holes; 8.2-step holes; 9-bolt.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, an embodiment of a paper-changing collapsible shaft collapsible method of a plate filter of the invention is described, the collapsible method is used for a set of collapsible device, the collapsible device comprises a left shaft sleeve, a mandrel 5, a right shaft sleeve and at least two crescent plates 6, the mandrel 5 is a cylinder with a four-section stepped diameter-variable structure, the left end of the mandrel 5 is contracted towards the left side three times along the axial direction, a shaft shoulder is formed between the left and right adjacent sections, the left shaft sleeve and the right shaft sleeve are respectively sleeved at two ends of the mandrel 5 correspondingly, at least two crescent plates 6 are arranged between the left shaft sleeve and the right shaft sleeve, the left and right ends of the crescent plates 6 are respectively and detachably connected with the left shaft sleeve and the right shaft sleeve, the left shaft sleeve comprises a left inner shaft sleeve 2 and a left outer shaft sleeve 3, the left inner shaft sleeve 2 is sleeved at the left end of the mandrel 5, the two ends of the left inner shaft sleeve 2 are fixed through the shaft shoulder and nuts 1 in threaded connection with the mandrel 5, the left outer shaft sleeve 3 is sleeved on the left inner shaft sleeve 2, the right end of the mandrel 5 is in interference fit with the inner hole of the right shaft sleeve, the right shaft sleeve comprises a right inner shaft sleeve 7 and a right shaft sleeve 8, the right shaft sleeve 7 and the right shaft sleeve 8 are sequentially arranged at the right shaft sleeve 8 is fixed at the left end of the mandrel 5,
the expanding and contracting method specifically comprises the following steps:
a. assembling the expansion device, namely assembling a left inner shaft sleeve 2 and a left outer shaft sleeve 3 into a left shaft sleeve, assembling the right end of a mandrel 5 with a right inner shaft sleeve 7 and a right outer shaft sleeve 8 in an interference fit manner, connecting the right end of the mandrel 5 with a frame of a plate filter in a rotating manner and connecting the right end of a crescent plate 6 with a power mechanism through a chain wheel, fixedly connecting the left shaft sleeve with the left end of the mandrel 5, fixedly connecting the left end of the crescent plate 6 with the left shaft sleeve, and finally locking a nut 1, wherein the crescent plate 6 is arranged at intervals along the circumferential direction of the mandrel 5 and jointly surrounds a cylinder, and at the moment, the diameter of the cylinder of the expansion device is the largest;
b. performing a paper winding operation, inserting the end part of the filter paper into a gap between two crescent plates 6, rotating a mandrel 5, winding the filter paper, ending the paper winding, and cutting off the filter paper;
c. the coil stripping operation is carried out, the nut 1 is loosened, the left shaft sleeve is removed, the coiled filter paper clamped with the crescent plate 6 is removed, the diameter of the cylinder of the expansion device is reduced, and the crescent plate 6 is taken out from the filter paper roll;
d. finally, a crescent plate 6, a left shaft sleeve and a nut 1 are assembled back.
The left inner shaft sleeve 2 and the left outer shaft sleeve 3 are of hollow tubular structures, the left inner shaft sleeve 2 is sleeved at the left end of the mandrel 5, the right end of the left inner shaft sleeve 2 is in abutting contact with one shaft shoulder, the left end of the left inner shaft sleeve 2 is fixed through a nut 1 in threaded connection with the mandrel 5, the nut 1 and the shaft shoulder jointly limit the axial movement of the left inner shaft sleeve 2, a convex annular baffle ring 2.1 is arranged on the outer circumferential surface of the left end of the left inner shaft sleeve 2 in the circumferential direction, a concave annular groove 2.2 is arranged on the outer circumferential surface of the right end of the left inner shaft sleeve 2 in the circumferential direction, a clamp spring 4 is correspondingly arranged in the annular groove 2.2, the left outer shaft sleeve 3 is sleeved on the left inner shaft sleeve 2 and is positioned between the annular baffle ring 2.1 and the annular groove 2.2, the annular baffle ring 2.1 and the clamp spring 4 axially position the left outer shaft sleeve 3, the left outer shaft sleeve 3 is prevented from moving in the axial direction, the right end of the left inner shaft sleeve 3 is provided with a concave groove 3.1 in the circumferential direction, the left end of the crescent plate 6 is inserted in the groove 3.1, the dovetail plate 6 is matched with the dovetail plate 6 in the circumferential direction, and the clearance is convenient.
The middle part of the right inner shaft sleeve 7 is provided with a through hole along the axial direction, the middle part of the right outer shaft sleeve 8 is provided with a step hole 8.2 along the axial direction, the step hole 8.2 comprises a left inner hole and a right inner hole, the inner diameter of the left inner hole is larger than that of the right inner hole, the right end of the right inner shaft sleeve 7 is inserted in the left inner hole, the right end of the mandrel 5 is in interference fit with the through hole and the right inner hole, the right inner shaft sleeve 7 and the right outer shaft sleeve 8 are prevented from moving axially, the right end of the crescent plate 6 is inserted in a circular seam between the right inner shaft sleeve 7 and the right outer shaft sleeve 8, and the roll paper is convenient to finish and is unloaded smoothly.
The outer diameter of the right inner shaft sleeve 7 is tapered, and the outer diameter of the right inner shaft sleeve 7 is increased from left to right, so that the crescent moon plate 6 can conveniently enclose a cylinder to radially expand and contract, smooth roll paper is realized, and roll unloading is convenient.
The outer circular surface of the left end of the right outer shaft sleeve 8 is provided with pin holes 8.1 penetrating through the side wall of the right outer shaft sleeve along the circumferential direction at intervals, the positions of the pin holes 8.1 correspond to the positions of joints between the adjacent crescent plates 6, the pin holes 8.1 are internally provided with bolts 9, the gap between the crescent plates 6 is slightly larger than the diameter of the pin 9, the end parts of filter paper can be ensured to smoothly enter the gap, and the filter paper can be smoothly coiled.
The left outer sleeve 3 is made of plastic material.
The working process of the invention is as follows:
a) Assembling the expansion device, namely firstly, forming a left shaft sleeve 2, a left outer shaft sleeve 3 and a clamp spring 4 into a left shaft sleeve, assembling the right end of a mandrel 5 with a right inner shaft sleeve 7 and a right outer shaft sleeve 8 in an interference fit manner, connecting the right end of the mandrel 5 with a frame of a plate filter in a rotating manner and connecting the right end of the mandrel with a power mechanism through a chain wheel, inserting the right end of a crescent plate 6 into a circular seam formed by the right inner shaft sleeve 7 and the right outer shaft sleeve 8, arranging a bolt 9 in a pin hole 8.1, sleeving the left shaft sleeve at the left end of the mandrel 5, inserting the left end of the crescent plate 6 into a dovetail groove 3.1 of the left outer shaft sleeve 3, and finally locking a nut 1, wherein the diameter of a cylinder surrounded by the crescent plate 6 is the largest;
b) The paper rolling operation is carried out, the width of the gap between the two crescent plates 6 is slightly larger than the diameter of the bolt 9, the end part of the filter paper is folded into a triangle, the triangle is inserted into the gap between the two crescent plates 6, the filter paper is pulled out from the gap between the two crescent plates, the mandrel 5 rotates, the crescent plates 6 roll the filter paper in the process of rotating along with the mandrel 5, and when the roll reaches a certain thickness, the paper rolling is finished, and the filter paper is cut off;
c) The coil stripping operation is carried out, the nut 1 is firstly loosened, the left shaft sleeve is removed, the coiled filter paper clamped with the crescent plate 6 is removed, because the mandrel 5 is a cylinder with four sections of stepped reducing structures, the left end of the mandrel 5 is axially reduced to the left, the outer diameter of the right inner shaft sleeve 7 is tapered, the outer diameter of the right inner shaft sleeve is increased from left to right, the coiled filter paper clamped with the crescent plate 6 is easy to take out, the crescent plate 6 is in a free state, the diameter of the cylinder surrounded by the crescent plate 6 is reduced, and the crescent plate 6 is easy to take out from the filter paper roll;
d) Finally, the crescent plate 6, the left shaft sleeve and the nut 1 are assembled again, so that the next round of paper winding operation can be started.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", etc. are directions or positional relationships based on the drawings, are merely for convenience of describing the present invention and simplifying the description, and are not to indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention, and it should be noted that the terms "mounted", "connected" should be construed broadly, for example, may be fixedly connected, may be detachably connected, or integrally formed, may be mechanically connected, may be indirectly connected through intermediaries, and may be construed in a specific meaning in the present invention in a specific case.
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 characteristics 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.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. A method for expanding and contracting a paper changing expanding and contracting shaft of a plate filter is characterized by comprising the following steps: the expanding and contracting method is used for a set of expanding and contracting device, the expanding and contracting device comprises a left shaft sleeve, a mandrel, a right shaft sleeve and at least two crescent plates, the mandrel is a cylinder with a four-section stepped variable diameter structure, the left end of the mandrel is contracted to the left three times along the axial direction, shaft shoulders are formed between the left and right adjacent sections, the left shaft sleeve and the right shaft sleeve are respectively sleeved at the two ends of the mandrel correspondingly, at least two crescent plates are arranged between the left shaft sleeve and the right shaft sleeve, the left and right ends of the crescent plates are respectively and correspondingly detachably connected with the left shaft sleeve and the right shaft sleeve, the left shaft sleeve comprises a left inner shaft sleeve and a left outer shaft sleeve, the left inner shaft sleeve is sleeved at the left end of the mandrel, the two ends of the left inner shaft sleeve are fixed with nuts in threaded connection with the mandrel through the shaft shoulders, the left outer shaft sleeve is sleeved on the left inner shaft sleeve, the right end of the mandrel is in interference fit with the inner holes of the right shaft sleeve, the right shaft sleeve comprises a right inner shaft sleeve and a right outer shaft sleeve, the right inner shaft sleeve is sequentially sleeved and the right inner shaft sleeve is fixedly at the right end of the mandrel,
the expanding and contracting method specifically comprises the following steps:
a) Assembling the expansion device, namely assembling a left inner shaft sleeve and a left outer shaft sleeve into a left shaft sleeve, assembling the right end of a mandrel with the right inner shaft sleeve and the right outer shaft sleeve in an interference fit manner, fixedly connecting the right end of a crescent plate with the right shaft sleeve, sleeving the left shaft sleeve at the left end of the mandrel, fixedly connecting the left end of the crescent plate with the left shaft sleeve, and finally locking nuts, wherein the crescent plate is arranged at intervals along the circumferential direction of the mandrel and jointly surrounds a cylinder, and the diameter of the cylinder of the expansion device is the largest at the moment;
b) Performing paper winding operation, inserting the end part of the filter paper into a gap between two crescent plates, rotating a mandrel, winding the filter paper, ending the paper winding, and cutting off the filter paper;
c) The coil stripping operation is carried out, the nut is loosened, the left shaft sleeve is taken down, coiled filter paper with the crescent plate clamped is taken down, at the moment, the diameter of the cylinder of the expansion device is reduced, and the crescent plate is taken out from the filter paper roll;
d) Finally, a crescent plate, a left shaft sleeve and a nut are assembled back.
2. The method for expanding and contracting the paper changing expanding and contracting shaft of the plate filter according to claim 1, which is characterized in that: the left inner shaft sleeve and the left outer shaft sleeve are of hollow tubular structures, the left inner shaft sleeve is sleeved at the left end of the mandrel, the right end of the left inner shaft sleeve is in abutting contact with one shaft shoulder, the left end of the left inner shaft sleeve is fixed through a nut in threaded connection with the mandrel, a convex annular baffle ring is arranged on the outer circular surface of the left end of the left inner shaft sleeve along the circumferential direction, a concave annular groove is arranged on the outer circular surface of the right end of the left inner shaft sleeve along the circumferential direction, a clamp spring is correspondingly arranged in the annular groove, the left outer shaft sleeve is arranged on the left inner shaft sleeve and is positioned between the annular baffle ring and the annular groove, a concave dovetail groove is arranged at the right end of the left outer shaft sleeve along the circumferential direction, the left end of the crescent plate is inserted in the dovetail groove, and clearance fit is formed between the dovetail groove and the crescent plate.
3. The method for expanding and contracting the paper changing expanding and contracting shaft of the plate filter according to claim 1, which is characterized in that: the middle part of the right inner shaft sleeve is axially provided with a through hole, the middle part of the right outer shaft sleeve is axially provided with a step hole, the step hole comprises a left inner hole and a right inner hole, the inner diameter of the left inner hole is larger than that of the right inner hole, the right end of the right inner shaft sleeve is inserted in the left inner hole, the right end of the mandrel is in interference fit with the through hole and the right inner hole, and the right end of the crescent plate is inserted in a circular seam between the right inner shaft sleeve and the right outer shaft sleeve.
4. A method for expanding and contracting a paper changing expanding and contracting shaft of a plate filter according to claim 1 or 3, which is characterized in that: the outer diameter of the right inner sleeve is tapered, and the outer diameter of the right inner sleeve is increased from left to right.
5. The method for expanding and contracting the paper changing expanding and contracting shaft of the plate filter according to claim 4, which is characterized in that: the outer circle surface of the left end of the right outer shaft sleeve is provided with pin holes penetrating through the side wall of the right outer shaft sleeve at intervals along the circumferential direction, the positions of the pin holes correspond to the positions of joints between the adjacent crescent plates, and bolts are arranged in the pin holes.
6. The method for expanding and contracting the paper changing expanding and contracting shaft of the plate filter according to claim 1, which is characterized in that: the left outer sleeve is made of plastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433123.7A CN110201440B (en) | 2019-05-23 | 2019-05-23 | Paper changing expansion and contraction shaft expanding and contracting method of plate filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910433123.7A CN110201440B (en) | 2019-05-23 | 2019-05-23 | Paper changing expansion and contraction shaft expanding and contracting method of plate filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110201440A CN110201440A (en) | 2019-09-06 |
| CN110201440B true CN110201440B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910433123.7A Active CN110201440B (en) | 2019-05-23 | 2019-05-23 | Paper changing expansion and contraction shaft expanding and contracting method of plate filter |
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| CN (1) | CN110201440B (en) |
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