CN101349265B - Concrete delivery pump adjustable double-layer seal assembly - Google Patents
Concrete delivery pump adjustable double-layer seal assembly Download PDFInfo
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- CN101349265B CN101349265B CN2008101395173A CN200810139517A CN101349265B CN 101349265 B CN101349265 B CN 101349265B CN 2008101395173 A CN2008101395173 A CN 2008101395173A CN 200810139517 A CN200810139517 A CN 200810139517A CN 101349265 B CN101349265 B CN 101349265B
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- sealing
- fixed cover
- stirring shaft
- adjustable plate
- concrete
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Abstract
The invention discloses an adjustable double-layer sealing assembly of a concrete conveying pump, which has a double-layer sealing of a sealing sleeve and a sealing ring, the sealing ring is located between a fixing sleeve and a stirring shaft of the concrete conveying pump, the sealing sleeve is located between the fixing sleeve and a hopper stirring seat and between the fixing sleeve and the stirring shaft, the inner circular face of the fixing sleeve is contacted with the oblique face of the sealing sleeve, an adjustable plate is provided with an oblique face which is contacted with the sealing ring, the adjustable plate is fixed on the fixing sleeve via an adjusting screw bolt, a gap is arranged between the adjustable plate and the fixing sleeve, and a sealing hoop is arranged outside the gap. The adjustable double-layer sealing assembly of the concrete conveying pump can efficiently prevent concrete grout leaking in an operating system of the stirring shaft, thereby avoiding blocking a lubricating oil passage, prolonging the service life of the operating system of the stirring shaft, and bringing convenience and fastness for maintenance and repair.
Description
Technical field:
The invention belongs to the concrete conveying equipment technical field, especially relate to a kind of concrete delivery pump adjustable double-layer seal assembly, be applicable on the stirring system in the concrete pump hopper.
Background technique:
At present, the basic structure of transmission and concrete transmission pump-mixing system is made up of with packing ring, felt, oil hydraulic motor, saturating lid, motor adpting flange etc. stirring shaft, mixing blade, left and right sides semiaxis, semicircle pressing plate, dust ring, change hub, friction ring, bearing support, bearing, backbone sealing ring, stable pin, location plectane, stifle, round nut, round nut.What the sealing of stirring shaft movement system was adopted is the individual layer sealing configuration---the dust ring sealing, and what sealing material adopted is the General Purpose Rubber goods, it wears no resistance, the life-span lacks, normal use is no more than 1000 hours at most.Because the dust ring surface of contact is less, easy to wear, after through one period operating time, the inner ring of dust ring is worn, occur in the dust ring through becoming big, caused concrete grout to penetrate into lubricant reservoir along the gap between stirring shaft and the dust ring, oil leab, bearing chamber is until oil hydraulic motor, oil leab results in blockage, the not smooth phenomenon of fuel feeding appears, and then cause the dry friction of stirring each parts on the semiaxis, each parts on the semiaxis have been aggravated to stir, the wearing and tearing of component such as bearing cause scraps, concrete grout can penetrate into hydraulic system from oil hydraulic motor simultaneously, the normal working performance of the whole hydraulic system of final influence causes concrete pump not use, and stops the place under repair of constructing.And because a whole set of stirring shaft is in the complex environment and turns round, in case the maintenance of breaking down, to dismantle be unusual difficulty, engineering time is long, causes very big loss to construction party.
Summary of the invention:
The objective of the invention is, solve above deficiency, provide a kind of and can prevent effectively that concrete grout from leaking in the stirring shaft movement system, avoid oil leab to stop up, prolong stirring shaft movement system working life, and maintain conveniently concrete delivery pump adjustable double-layer seal assembly.
The technological scheme that the present invention takes is, concrete delivery pump adjustable double-layer seal assembly comprises seal element and securing means, seal element is stuffing box gland and the seal ring that is looped around on the transfer pump stirring shaft, securing means comprises fixed cover, adjustable plate, regulate bolt, sealing hoop, seal ring is between fixed cover and the transfer pump stirring shaft, stuffing box gland is between the hopper stirring seat of fixed cover and transfer pump and between fixed cover and the stirring shaft, the fixed cover inner headed face contacts with the stuffing box gland inclined-plane, seal ring one side contacts with adjustable plate, has the inclined-plane that contacts with seal ring on the adjustable plate, adjustable plate adopts to regulate and is bolted on the fixed cover, have the gap between adjustable plate and the fixed cover, have sealing hoop in the outside in gap.
The invention has the beneficial effects as follows; owing to adopted the structure of double-layer seal; can prevent effectively that concrete grout from leaking into each links such as grease chamber; avoided the obstruction of oil leab; make the change hub on the concrete pump; bearing support; bearing; component such as oil hydraulic motor can be protected long-term effectively; greatly improved the operating reliability of stirring system; prolonged the working life of component such as stirring shaft movement system and oil hydraulic motor; sealing is for up to more than 3000 hours; and maintenance is convenient; fast, improved the working efficiency of concrete pump greatly.
Description of drawings:
Fig. 1 is the structural representation of concrete delivery pump adjustable double-layer seal assembly of the present invention;
Fig. 2 is a scheme of installation of the present invention.
Embodiment:
From the structural representation of concrete delivery pump adjustable double-layer seal assembly of the present invention shown in Figure 1 as can be seen, the present invention by stuffing box gland 1, fixed cover 2, seal ring 7, adjustable plate 6, regulate bolt 5, sealing gasket 4, sealing hoop 3 etc. and partly form.Fixed cover 2 be in stirring shaft 16 around, be connected on the hopper stirring seat 10 by bolt 8, stuffing box gland 1 is between fixed cover 2 and the hopper stirring seat 10 and between fixed cover 2 and the stirring shaft 16.Has the double-layer seal element between fixed cover 2 and the stirring shaft 16: stuffing box gland 1 and seal ring 7.Stuffing box gland 1 adopts the top-quality rubber material, and seal ring 7 adopts the manufacturing of superpower wear-resistant sealing material, can select the superpower wear-resistant carbon fiber for use.Have the inclined-plane on fixed cover 2 inner headed faces, stuffing box gland 1 outside contacts with inclined-plane on the fixed cover 2, and the internal diameter of stuffing box gland 1 has certain taper, and when screwing bolt, 2 pairs of stuffing box glands 1 of fixed cover apply power, make stuffing box gland 1 be close to stirring shaft 16, have guaranteed sealing effect.Stuffing box gland 1 has produced the abrasion gap with stirring shaft 16 through one period operating time, can be according to actual abrasion size, correctly regulate adjustable bolt 8 on the fixed cover 2 with torque wrench, and can realize sealing once more.Seal ring 7 is between fixed cover 2 and the stirring shaft 16, is looped around on the stirring shaft 16, and two sides of seal ring 7: a side contacts with the projection of fixed cover 2, and a side contacts with adjustable plate 6.Surface of contact with seal ring 7 on the adjustable plate 6 is the inclined-plane, and adjustable plate 6 adopts adjusting bolt 5 to be fixed on the fixed cover 2.Have the gap between adjustable plate 6 and the fixed cover 2, when adopting torque wrench to 5 reinforcings of adjusting bolt, the inclined-plane crush seal ring 7 of adjustable plate 6 more closely is fitted on the stirring shaft 16 seal ring 7.Seal ring 7 has produced wearing clearance with stirring shaft 16 through one period operating time, can be according to the actual wear size, correctly regulate adjusting bolt 5 on the adjustable plate with torque wrench, and realize sealing once more.As long as in time find the gap between seal ring 7 and the stirring shaft 16, in time change seal ring 7, can reach fully and prevent that for a long time concrete grout from leaking into the purpose of stirring shaft movement system.The outside, gap between adjustable plate 6 and fixed cover 2 has sealing hoop 3, and sealing gasket 4 is equipped with in the inboard of sealing hoop 3, and sealing gasket 4 can adopt the General Purpose Rubber goods, when changing stuffing box gland 1 and seal ring 7, must open sealing hoop 3 earlier.
Fig. 2 is a scheme of installation of the present invention; it is the part of stirring system; has oil hydraulic motor 11; motor cover 12; stirring shaft 16; mixing blade 17; motor flange seat 13; bearing; bearing support 14; change hub 15; hopper stirring seat 10; parts such as hopper side wall 9; concrete delivery pump adjustable double-layer seal assembly of the present invention is applied in the stirring system; can prevent effectively that by double-layer seal concrete grout from leaking into each links such as grease chamber until oil hydraulic motor; avoided the obstruction of oil leab; make distributor can be in long-term normal working; make change hub 15; bearing support 14; bearing; oil hydraulic motor 11 component such as grade can be protected long-term effectively; greatly improve the operating reliability of stirring system, prolonged the working life of component such as stirring shaft movement system and oil hydraulic motor.The present invention is applicable to multiple concrete pumps such as Vehicular concrete conveying pump, concrete hauling pump, boom type concrete pumps.
Claims (4)
1. concrete delivery pump adjustable double-layer seal assembly, comprise seal element and securing means, it is characterized in that: described seal element is stuffing box gland (1) and the seal ring (7) that is looped around on the concrete pump stirring shaft, described securing means comprises fixed cover (2), adjustable plate (6), regulate bolt (5), sealing hoop (3), seal ring (7) is between fixed cover (2) and the transfer pump stirring shaft (16), stuffing box gland (1) is between the hopper stirring seat (10) of fixed cover (2) and transfer pump and between fixed cover (2) and the stirring shaft (16), fixed cover (2) inner headed face contacts with stuffing box gland (1) inclined-plane, seal ring (7) one sides contact with adjustable plate (6), has the inclined-plane that contacts with seal ring (7) on the adjustable plate (6), adjustable plate (6) adopts adjusting bolt (5) to be fixed on the fixed cover (2), have the gap between described adjustable plate (6) and the fixed cover (2), have sealing hoop (3) in the outside in gap.
2. concrete delivery pump adjustable double-layer seal assembly according to claim 1 is characterized in that: described fixed cover (2) is connected on the hopper stirring seat (10) by bolt (8).
3. concrete delivery pump adjustable double-layer seal assembly according to claim 1 is characterized in that: sealing gasket (4) is equipped with in the inboard of described sealing hoop (3).
4. according to any described concrete delivery pump adjustable double-layer seal assembly of claim 1 to 3, it is characterized in that: described seal ring (7) adopts the abrasive sealing materials manufacturing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101395173A CN101349265B (en) | 2008-08-20 | 2008-08-20 | Concrete delivery pump adjustable double-layer seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101395173A CN101349265B (en) | 2008-08-20 | 2008-08-20 | Concrete delivery pump adjustable double-layer seal assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101349265A CN101349265A (en) | 2009-01-21 |
| CN101349265B true CN101349265B (en) | 2010-06-16 |
Family
ID=40268189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101395173A Expired - Fee Related CN101349265B (en) | 2008-08-20 | 2008-08-20 | Concrete delivery pump adjustable double-layer seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101349265B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201502179U (en) * | 2009-09-09 | 2010-06-09 | 三一重工股份有限公司 | Concrete mixing device capable of portioning and warning grout leakage |
| CN106812942A (en) * | 2015-12-01 | 2017-06-09 | 衡阳双雁运输机械有限公司 | A kind of spindle nose component of screw sand washer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5035436A (en) * | 1990-04-24 | 1991-07-30 | Five Star Seal Corporation | Housing seal chamber body |
| CN2083660U (en) * | 1991-03-19 | 1991-08-28 | 吴雪明 | Mechanical centrifugal stop sealing device |
| CN2720149Y (en) * | 2004-08-30 | 2005-08-24 | 长沙中联重工科技发展股份有限公司 | Agitating sealing device for concrete delivering pump |
| CN2721978Y (en) * | 2004-08-26 | 2005-08-31 | 江苏牧羊集团有限公司 | Axial sealer |
| CN201255088Y (en) * | 2008-08-20 | 2009-06-10 | 泰安市前进机械制造有限公司 | Adjustable double-layer seal assembly for concrete delivery pump |
-
2008
- 2008-08-20 CN CN2008101395173A patent/CN101349265B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5035436A (en) * | 1990-04-24 | 1991-07-30 | Five Star Seal Corporation | Housing seal chamber body |
| CN2083660U (en) * | 1991-03-19 | 1991-08-28 | 吴雪明 | Mechanical centrifugal stop sealing device |
| CN2721978Y (en) * | 2004-08-26 | 2005-08-31 | 江苏牧羊集团有限公司 | Axial sealer |
| CN2720149Y (en) * | 2004-08-30 | 2005-08-24 | 长沙中联重工科技发展股份有限公司 | Agitating sealing device for concrete delivering pump |
| CN201255088Y (en) * | 2008-08-20 | 2009-06-10 | 泰安市前进机械制造有限公司 | Adjustable double-layer seal assembly for concrete delivery pump |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-351404A 1999.12.24 |
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| Publication number | Publication date |
|---|---|
| CN101349265A (en) | 2009-01-21 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20120820 |