CN104590923A - Leakproof mining star-shaped dust valve - Google Patents
Leakproof mining star-shaped dust valve Download PDFInfo
- Publication number
- CN104590923A CN104590923A CN201510002345.5A CN201510002345A CN104590923A CN 104590923 A CN104590923 A CN 104590923A CN 201510002345 A CN201510002345 A CN 201510002345A CN 104590923 A CN104590923 A CN 104590923A
- Authority
- CN
- China
- Prior art keywords
- valve
- star
- bearing
- center shaft
- mining
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/34—Emptying devices
- B65G65/40—Devices for emptying otherwise than from the top
- B65G65/48—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems
- B65G65/4881—Devices for emptying otherwise than from the top using other rotating means, e.g. rotating pressure sluices in pneumatic systems rotating about a substantially horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2814/00—Indexing codes relating to loading or unloading articles or bulk materials
- B65G2814/03—Loading or unloading means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
- Details Of Valves (AREA)
Abstract
The invention belongs to the field of a dust valve, and particularly discloses a leakproof mining star-shaped dust valve, which is used for solving the technical problems that material or dust is leaked and the sealing between each blade and a valve body is not tight due to a great amount of heat produced in the operation of the star-shaped dust valve. By adopting the technical scheme, the leakproof mining star-shaped dust valve comprises a motor, a reducer stand and a central shaft; two ends of the valve body are respectively provided with a left valve cover and a right valve cover, the central shaft is transversely arranged on the center of the valve body, the central shaft is provided with a star-shaped impeller assembly, the end part of each blade is fixedly provided with a flexible sealing sheet, and the flexible sealing sheets are installed on two sides of the blade by virtue of threads; two ends of the central shaft are respectively provided with a left bearing and a right bearing through a left bearing seat and a right bearing seat, the bottom of a left bearing end cover is fixedly connected with the valve cover to form a left side sealing cavity, the reducer stand is fixedly connected with the right side valve cover to form a right side sealing cavity, the left bearing and the right bearing are isolated from the external air, the dust is effectively prevented from entering the bearings, the normal operation of the central shaft is guaranteed, and the dust valve is guaranteed to work normally.
Description
Technical field
The invention belongs to unloading valve field, particularly relate to a kind of mining star-shaped ash unloading valve of leakproof.This unloading valve is mainly used in the dusting equipment ash discharge of the industrial sectors such as environmental protection, metallurgy, chemical industry, grain, food, colliery, air-supply and other feeding devices.
Background technology
At present, unloading in ash, ash discharge and charging gear that the equipment such as the hopper in the field such as colliery, metallurgy, feed bin, ash silo adopt mainly contains two kinds, and one is star-shaped ash unloading valve, and one is flap valve.But flap valve has a lot of weak point in structure, one be collaborate, air leakage phenomena is serious, effect in the ash bucket of air-transport system and dust pelletizing system neither be fine, two is that valve plate is easily out of shape, make to be not closed completely close, more serious when particularly adopting cylinder or push rod to open and close, three is that scantling of structure is comparatively large, takies equipment volume.
Also can there is a lot of problems in existing unloading valve in addition in the process used, and one is can produce amount of heat during star-shaped ash unloading valve runs thus cause seal failure, makes the leakage of material or dust; Two is valve body both sides that the bearing of traditional unloading valve is directly installed on unloading valve, because there being a large amount of dusts in valve body, once dust enters in bearing, the ball roller in bearing can be stuck and cannot rotate, at this moment main shaft just cannot rotate and unload ash, and unloading valve also just cannot normally work; Three is poorly sealed close between blade and valve body, easily produces leakage, when leaking serious, has to keep in repair, and maintenance capacity is large, and cost is high.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, solution prior art Problems existing, provides a kind of mining star-shaped ash unloading valve of leakproof, and this unloading valve is simple, reliable, good seal performance, effectively can reduce heat to produce, reduce sealing place temperature and can effectively prevent bearing stuck.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: the mining star-shaped ash unloading valve of leakproof, comprises motor, reductor support, valve body and center shaft; The two ends of described valve body are respectively arranged with left valve gap and right valve gap, left valve gap, right valve gap are fixedly connected with the bolt of valve body by annular spread, described center shaft is horizontally set at valve body center, center shaft is provided with star impeller assembly, described star impeller assembly comprises impeller, described impeller to be connected on center shaft by key and with central axis, on impeller, annular is distributed with multiple blade, the end winding support of described blade is provided with two flexible sealing fin, and two flexible sealing fin are installed on the both sides of blade by screw thread;
Described center shaft and left valve gap, right valve gap contact position are provided with poted assemblies, and the two ends of center shaft are respectively arranged with left bearing and right bearing by left shaft holder and right bearing seat, and described left shaft holder is fixedly connected with right valve gap with left valve gap respectively with right bearing seat; Described left shaft holder outer end is provided with left bearing end cap, described left bearing end cap entirety is frustum, the middle part of left bearing end cap is fixedly connected with left shaft holder and is sealed by center shaft left end, the bottom of left bearing end cap and valve gap are fixedly connected to form left side annular seal space, be fixedly installed right bearing end cap outside right-hand axis bearing, described center shaft right-hand member extends to outside right bearing end cap through the through hole being arranged at right bearing end cap;
Described reductor support entirety is barrel-shaped casing structure, right bearing seat and center shaft right-hand member seal in right side valve gap by reductor support spiral-lock, reductor support and right side valve gap form right side annular seal space, the outside of reductor support is fixedly installed the reductor be connected with motor, the output shaft of described reductor extends in the annular seal space of right side through the through hole being arranged at reductor support, and speed reducer output shaft is connected with center shaft right-hand member by coupler in the annular seal space of right side.
Preferably, described valve body comprises central enclosure, central enclosure surrounds columned star impeller container cavity, central enclosure be symmetrically arranged with the square ash inlet and ash hole that are connected with star impeller container cavity up and down, described ash inlet and the width of ash hole near star impeller container cavity one end are less than the width away from star impeller container cavity one end.
Preferably, described poted assemblies comprises dust ring, hill-shaped seal ring and gland cover, and described dust ring and hill-shaped seal ring are set in turn in end cap seal groove, and described gland cover is fixedly connected with end cap and dust ring and hill-shaped seal ring is fixed.
Preferably, described hill-shaped seal ring comprises the chevron body be made up of NBR, and the outside of described chevron body is coated with two-layer fiber cloth glue-line.
Preferably, described reductor adopts differential teeth planetary decelerator, or adopts pin synthetic fibre cycloid speed reducer.
Preferably, described left bearing and right bearing all adopt self-aligning ball bearing.
Preferably, the material of described flexible sealing fin is rubber.
The present invention compared with prior art has following beneficial effect.
The first, structure of the present invention is simple, with low cost, reliable, can effectively prevent dust stratification from blocking, be highly suitable for the dusting equipment in the field such as colliery, environmental protection.
Second, by arranging left bearing and right bearing at the two ends of center shaft, left bearing and right bearing all adopt self-aligning ball bearing, significantly reduce the generation of bearing place heat, and left bearing and right bearing are all arranged at valve body two ends by bearing seat, make bearing away from poted assemblies, reduce the temperature at poted assemblies place, sealing reliability is increased greatly.
3rd, the present invention is by arranging poted assemblies at left valve gap and right valve gap and central axis, can effectively prevent the dust of valve inner from entering Bearing inner, and utilize left bearing end cap and reductor support to form left annular seal space and right annular seal space respectively at the two ends of left and right bearing, by left and right bearing and isolate from outer air, effectively prevent extraneous dust from entering Bearing inner, ensure center shaft normal operation, unloading valve is normally worked.
4th, by being connected with two panels flexible sealing fin in the end bolt of blade, flexible sealing fin can seal well with valve body, and sealing property is significantly improved, and unloading valve maintenance capacity of the present invention is few, long service life.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of valve body.
Fig. 3 is star impeller assembly structural representation.
Fig. 4 is the structural representation of reductor support.
Fig. 5 is the structural representation of hill-shaped seal ring.
The structural representation of axle centered by Fig. 6.
In figure: 1 is motor, 2 is reductors, 3 is reductor supports, 4 is valve bodies, 41 is central enclosure, 42 is ash inlet, 43 is ash hole, 5 is left valve gaps, 6 is right valve gaps, 7 is center shafts, 8 is star impeller assemblies, 81 is impeller, 82 is blade, 83 is flexible sealing fin, 9 is poted assemblives, 91 is dust ring, 92 is hill-shaped seal ring, 921 is chevron body, 922 is fiber cloth glue-line, 93 is gland cover, 10 is left shaft holders, 11 is right bearing seats, 12 is left bearings, 13 is right bearings, 14 is left bearing end cap, 15 is right bearing end cap, 16 is coupler.
Detailed description of the invention
As shown in figs 1 to 6, the mining star-shaped ash unloading valve of leakproof, motor 1, reductor support 3, valve body 4 and center shaft 7; The two ends of valve body 4 are respectively arranged with left valve gap 5 and right valve gap 6, left valve gap 5, right valve gap 6 are fixedly connected with the bolt of valve body 4 by annular spread, center shaft 7 is horizontally set at valve body 4 center, center shaft 7 is provided with star impeller assembly 8, described star impeller assembly 8 comprises impeller 81, impeller 81 to be connected on center shaft 7 by key and to rotate with center shaft 7, on impeller 81, annular is distributed with multiple blade 82, flexible sealing fin 83, two flexible sealing fin 83 that the end winding support of described blade 82 is provided with two rubber are installed on the both sides of blade 82 by screw thread.
Center shaft 7 and left valve gap 5, right valve gap 6 contact position are provided with poted assemblies 9, poted assemblies 9 prevents the dust in valve body 4 from entering in left and right bearing 13 from left and right valve gap 6, the two ends of center shaft 7 are respectively arranged with left bearing 12 and right bearing 13 by left shaft holder 10 and right bearing seat 11, and left shaft holder 10 and right bearing seat 11 are fixedly connected with right valve gap 6 with left valve gap 5 respectively; Left shaft holder 10 outer end is provided with left bearing end cap 14, left bearing end cap 14 entirety is frustum, the middle part of left bearing end cap 14 is fixedly connected with left shaft holder 10 and is sealed by center shaft 7 left end, the bottom of left bearing end cap 14 and valve gap are fixedly connected to form left side annular seal space, be fixedly installed right bearing end cap 15 outside right-hand axis bearing, center shaft 7 right-hand member extends to outside right bearing end cap 15 through the through hole being arranged at right bearing end cap 15.
Reductor support 3 entirety is barrel-shaped casing structure, right bearing seat 11 and center shaft 7 right-hand member seal in right side valve gap by reductor support 3 spiral-lock, reductor support 3 and right side valve gap form right side annular seal space, the outside of reductor support 3 is fixedly installed the reductor 2 be connected with motor 1, reductor 2 adopts pin synthetic fibre cycloid speed reducer 2, the output shaft of reductor 2 extends in the annular seal space of right side through the through hole being arranged at reductor support 3, and reductor 2 output shaft is connected with center shaft 7 right-hand member by coupler 16 in the annular seal space of right side.
When using unloading valve of the present invention, motor 1 is with central shaft 7 to rotate by reductor 2, center shaft 7 rotates thus drives star impeller assembly 8, the dust fallen between blade 82 gap can be rotated from ash hole 43 send when star impeller assembly 8 rotates from ash inlet 42.And the present invention arranges poted assemblies 9 at left valve gap 5 and right valve gap 6 with center shaft 7 place and prevents dust in valve body 4 from entering, in addition left annular seal space and right annular seal space are set at the two ends of left shaft holder 10 and right bearing seat 11, prevent outdoor dust from entering left bearing 12 and right bearing 13, so all sealing is formed to the both sides of left bearing 12 and right bearing 13, ensure the normal work of left bearing 12 and right bearing 13.Left bearing 12 and right bearing 13 are external setting in addition, adopt self-aligning ball bearing simultaneously, can weaken center shaft 7 and the friction of bearing like this, significantly reduce the generation of bearing place heat, prevent blast, be applicable to the field such as colliery, environmental protection.
The smooth degree of unloading valve is entered in order to promote dust, prevent dust from blocking at unloading valve valve body 4 place, valve body 4 comprises central enclosure 41, central enclosure 41 surrounds columned star impeller container cavity, central enclosure 41 be symmetrically arranged with the square ash inlet 42 and ash hole 43 that are connected with star impeller 81 container cavity up and down, ash inlet 42 and the width of ash hole 43 near star impeller 81 container cavity one end are less than the width away from star impeller 81 container cavity one end.
Further in order to promote the sealing at valve gap and center shaft 7 place, poted assemblies 9 comprises dust ring 91, mountain RunddichtringO 92 and gland cover 93, described dust ring 91 and mountain RunddichtringO 92 are set in turn in end cap seal groove, and described gland cover 93 is fixedly connected with end cap to be fixed dust ring 91 and mountain RunddichtringO 92.
Preferably, described mountain RunddichtringO 92 comprises the chevron body 921 be made up of NBR, and the outside of described chevron body 921 is coated with two-layer fiber cloth glue-line 922.Dust ring 91 can remove the dust on center shaft 7, when fitting tight circle, rubber can be utilized to be elasticity, is directly strutted by circle in the groove being enclosed within bonnet central place, simplifies the assembly process of unloading valve.In addition, the service life of mountain RunddichtringO 92 is higher than making the service life of doing sliding sealing surface with pure glue.
Above content combines embodiment accompanying drawing and has made detailed description to specific embodiments of the invention.In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.In above-mentioned several embodiment, reductor 2 adopts pin synthetic fibre cycloid speed reducer in addition, also can adopt differential teeth planetary decelerator according to actual needs.The quantity of blade 82 also can be selected according to the place of practical application simultaneously.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. the mining star-shaped ash unloading valve of leakproof, is characterized in that: comprise motor (1), reductor support (3), valve body (4) and center shaft (7), the two ends of described valve body (4) are respectively arranged with left valve gap (5) and right valve gap (6), left valve gap (5), right valve gap (6) is fixedly connected with by the bolt of annular spread with valve body (4), described center shaft (7) is horizontally set at valve body (4) center, center shaft (7) is provided with star impeller assembly (8), described star impeller assembly (8) comprises impeller (81), described impeller (81) is connected to center shaft (7) by key and goes up and rotate with center shaft (7), the upper annular of impeller (81) is distributed with multiple blade (82), the end winding support of described blade (82) is provided with two flexible sealing fin (83), two flexible sealing fin (83) are installed on the both sides of blade (82) by screw thread,
Described center shaft (7) and left valve gap (5), right valve gap (6) contact position are provided with poted assemblies (9), the two ends of center shaft (7) are respectively arranged with left bearing (12) and right bearing (13) by left shaft holder (10) and right bearing seat (11), and described left shaft holder (10) is fixedly connected with right valve gap (6) with left valve gap (5) respectively with right bearing seat (11); Described left shaft holder (10) outer end is provided with left bearing end cap (14), described left bearing end cap (14) entirety is frustum, the middle part of left bearing end cap (14) is fixedly connected with left shaft holder (10) and is sealed by center shaft (7) left end, the bottom of left bearing end cap (14) and valve gap are fixedly connected to form left side annular seal space, be fixedly installed right bearing end cap (15) outside right-hand axis bearing, described center shaft (7) right-hand member extends to right bearing end cap (15) outside through the through hole being arranged at right bearing end cap (15);
Described reductor support (3) entirety is barrel-shaped casing structure, right bearing seat (11) and center shaft (7) right-hand member seal in right side valve gap by reductor support (3) spiral-lock, reductor support (3) and right side valve gap form right side annular seal space, the outside of reductor support (3) is fixedly installed the reductor (2) be connected with motor (1), the output shaft of described reductor (2) extends in the annular seal space of right side through the through hole being arranged at reductor support (3), reductor (2) output shaft is connected with center shaft (7) right-hand member by coupler (16) in the annular seal space of right side.
2. the mining star-shaped ash unloading valve of leakproof according to claim 1, it is characterized in that: described valve body (4) comprises central enclosure (41), central enclosure (41) surrounds columned star impeller (81) container cavity, central enclosure (41) be symmetrically arranged with the square ash inlet (42) and ash hole (43) that are connected with star impeller (81) container cavity up and down, described ash inlet (42) and ash hole (43) width near star impeller (81) container cavity one end is less than the width away from star impeller (81) container cavity one end.
3. the mining star-shaped ash unloading valve of leakproof according to claim 2, it is characterized in that: described poted assemblies (9) comprises dust ring (91), mountain RunddichtringO (92) and gland cover (93), described dust ring (91) and mountain RunddichtringO (92) are set in turn in end cap seal groove, and described gland cover (93) is fixedly connected with end cap to be fixed dust ring (91) and mountain RunddichtringO (92).
4. the mining star-shaped ash unloading valve of leakproof according to claim 3, it is characterized in that: described mountain RunddichtringO (92) comprises the chevron body (921) be made up of NBR, the outside of described chevron body (921) is coated with two-layer fiber cloth glue-line (922).
5. the mining star-shaped ash unloading valve of leakproof according to claim 1, is characterized in that: described reductor (2) adopts differential teeth planetary decelerator, or adopts pin synthetic fibre cycloid speed reducer.
6. the mining star-shaped ash unloading valve of leakproof according to claim 1, is characterized in that: described left bearing (12) and right bearing (13) all adopt self-aligning ball bearing.
7. the mining star-shaped ash unloading valve of leakproof according to claim 1, is characterized in that: the material of described flexible sealing fin (83) is rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002345.5A CN104590923A (en) | 2015-01-05 | 2015-01-05 | Leakproof mining star-shaped dust valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510002345.5A CN104590923A (en) | 2015-01-05 | 2015-01-05 | Leakproof mining star-shaped dust valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104590923A true CN104590923A (en) | 2015-05-06 |
Family
ID=53117057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510002345.5A Pending CN104590923A (en) | 2015-01-05 | 2015-01-05 | Leakproof mining star-shaped dust valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104590923A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969145A (en) * | 2017-04-28 | 2017-07-21 | 深圳市能源环保有限公司 | A kind of Turbine Barring Gears rocking bar shaft sealer |
| CN110091429A (en) * | 2019-05-28 | 2019-08-06 | 北京凯盛建材工程有限公司 | A kind of composite heat insulating wall board assembly line cloth system and distributing method |
| CN110091428A (en) * | 2019-05-28 | 2019-08-06 | 北京凯盛建材工程有限公司 | The blanking device and method of discharge quantity can be automatically adjusted |
| CN110181678A (en) * | 2019-05-28 | 2019-08-30 | 北京凯盛建材工程有限公司 | Composite thermo-insulating wall board production system based on rotary Valve Feeder |
| CN110182614A (en) * | 2019-06-25 | 2019-08-30 | 四川省星船城水泥股份有限公司 | A kind of Vertical Mill revolution lock wind batcher avoiding putty |
| CN111981128A (en) * | 2020-08-28 | 2020-11-24 | 温州职业技术学院 | Speed reducer shaft sealing device for conveying materials |
-
2015
- 2015-01-05 CN CN201510002345.5A patent/CN104590923A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969145A (en) * | 2017-04-28 | 2017-07-21 | 深圳市能源环保有限公司 | A kind of Turbine Barring Gears rocking bar shaft sealer |
| CN110091429A (en) * | 2019-05-28 | 2019-08-06 | 北京凯盛建材工程有限公司 | A kind of composite heat insulating wall board assembly line cloth system and distributing method |
| CN110091428A (en) * | 2019-05-28 | 2019-08-06 | 北京凯盛建材工程有限公司 | The blanking device and method of discharge quantity can be automatically adjusted |
| CN110181678A (en) * | 2019-05-28 | 2019-08-30 | 北京凯盛建材工程有限公司 | Composite thermo-insulating wall board production system based on rotary Valve Feeder |
| CN110091429B (en) * | 2019-05-28 | 2024-05-03 | 北京凯盛建材工程有限公司 | Material distribution system and material distribution method for composite heat-insulating wallboard production line |
| CN110091428B (en) * | 2019-05-28 | 2024-05-03 | 北京凯盛建材工程有限公司 | Discharging device and method capable of automatically adjusting discharging amount |
| CN110181678B (en) * | 2019-05-28 | 2024-05-31 | 北京凯盛建材工程有限公司 | Composite heat-insulating wallboard production system based on rotary blanking valve |
| CN110182614A (en) * | 2019-06-25 | 2019-08-30 | 四川省星船城水泥股份有限公司 | A kind of Vertical Mill revolution lock wind batcher avoiding putty |
| CN111981128A (en) * | 2020-08-28 | 2020-11-24 | 温州职业技术学院 | Speed reducer shaft sealing device for conveying materials |
| CN111981128B (en) * | 2020-08-28 | 2022-03-29 | 温州职业技术学院 | Speed reducer shaft sealing device for conveying materials |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104590923A (en) | Leakproof mining star-shaped dust valve | |
| CN201787106U (en) | Pneumatic wear-resistant discharging rocking valve | |
| CN104595565A (en) | Star-shaped cinder valve for mine dust collector | |
| CN201787108U (en) | Pneumatic wear-resistant swing valve for feeding | |
| CN202897567U (en) | Feeding device | |
| CN204473915U (en) | A kind of mining star-shaped ash unloading valve of leakproof | |
| CN102689776A (en) | Dual-channel star-shaped feeder | |
| CN206813999U (en) | A kind of good airlock suitable for hot and humid environment of air-tightness | |
| CN201787116U (en) | Split type hard seal plug valve | |
| CN205806515U (en) | Magnet fluid sealing discharge valve | |
| CN204477460U (en) | A kind of mining dust catcher star-shaped ash unloading valve | |
| CN202186706U (en) | Eccentric star ash unloading valve | |
| CN201062165Y (en) | Side-seal grid unloader | |
| CN207293369U (en) | Sealing device for screw conveyor and the screw conveyor containing it | |
| CN103803305A (en) | Double-sealed rotary valve | |
| CN105173446A (en) | Arch breaking device | |
| CN102424249B (en) | Self-sealing type spiral dust unloading valve | |
| CN201694623U (en) | Spiral conveyor | |
| CN202054399U (en) | Screw type cinder valve | |
| CN205689757U (en) | Bucket elevator axle sealing structure | |
| CN207278897U (en) | Pneumostop bilayer valve gear | |
| CN207759566U (en) | Screw conveyor | |
| CN202186710U (en) | Self-sealing spiral dust discharging valve | |
| CN209720772U (en) | A kind of dust-proof leakage sealed device of screw conveyor | |
| CN208169526U (en) | Lip type mechanically-sealing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150506 |