CN1201984C

CN1201984C - Self-sealing ash conveyer

Info

Publication number: CN1201984C
Application number: CN 03103243
Authority: CN
Inventors: 李玉清
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-01-28
Filing date: 2003-01-28
Publication date: 2005-05-18
Anticipated expiration: 2023-01-28
Also published as: CN1429751A

Abstract

The present invention relates to an improvement of a dust conveyer, particularly to an improvement of a dust conveyer used for gravity dust removing or cloth bag dust removing systems for a blast furnace. In the new design proposal, a dust outlet port of the dust conveyer is provided with an automatic valve locking mechanism composed of a valve port, a valve board and a valve board driving mechanism; a forced airtight seal can be realized in the position of an outlet of the dust conveyer to prevent the leakage of gases in a dust removing system for the blast furnace, in which y is communicated with the dust conveyer. Because an automatic air locking function is added, a fragile dust falling ball valve can be saved in the system; thus, the safety performance in the whole system is greatly enhanced, the manufacture cost of the whole system is reduced, and the operating cost of the whole system is also obviously lowered.

Description

From the locking cinder conveyer

Technical field

Involved in the present invention is the transmission of the even transmission equipment, particularly granular material of solid material, is particularly suitable in blast furnace gravity or the bag-type dust removal system dust under collecting being carried out using in the after-treatment system.

Background technology

The load transfer device that the transmission of granular material is often adopted is the interior transmitting device of the cartridge type of entity spiral formula, is also referred to as the agitator type load transfer device.Particularly to the transmission of fine solid particle, this enclosed transmission apparatus can prevent dust from flying, can realize evenly continuous quantitative conveying, so use very general.Comprise a transmission cylindrical shell in the structure, be provided with ash inlet and ash hole.The feeder that dynamic axle and top entity transmission spiral are formed in the cylindrical shell.Feeder links to each other with power take-off mechanism and the powder that will enter ash inlet under it drives is evenly continuously delivered to ash hole, and falls from the even amount of ash hole.The ash hole that can raise when needing make tubular axis to updip with transmission that dust is hoisted.This kind equipment is widely used in the after-treatment system of blast furnace gas gravity or bag-type dust.Because of in the transmission course of dust, often being accompanied by the high pressure gas environment, so after the powder ash in grey storehouse drains, must in institute's bonded assembly transit system, increase the air-lock device of ball valve or other form.Usually also be provided with behind the conveyer and put grey ball valve, realize even feeding and the function of locking gas simultaneously to guarantee safety.But, the ball valve of existing structure often leaks gas because of wearing and tearing under the mal-condition of high pressure gas and high dust atmosphere in the application process, the ball valve that price is about 20,000 yuan and the life-span of real Secure Application has only half a year, the standard of existing ball-valve structure and system safety operation have caused unsurmountable defective and physical waste greatly.

Summary of the invention

The objective of the invention is to the structure of ash conveying device is improved completely, it is possessed continuity and automatic gas-locking function are arranged, guarantee system's safety in operation, reliability when putting grey ball valve, reduce the price and the operating cost of system simultaneously significantly in the hope of thoroughly omitting.

Basic thought of the present invention is to using the improvement of supporting cinder conveyer principle of design in blast furnace gravitational dust collection or bag-type dust removal system.Make cinder conveyer when not changing evenly defeated grey ability, possess the function that automatic gas-locking is arranged.Concrete invention key is to have established an ash hole self closing system at the not port of cinder conveyer.It and cinder conveyer structure are included the control of integrated design and chain operation in, promptly can be implemented in SELF CL ash discharge passage when stopping defeated ash or defeated ash occurring interrupting.For realizing above imagination, should a sealing valve port be set the port, the valve plate that configuration and sealing valve port are complementary and the driver train of valve plate in the transmission of cinder conveyer.After the monitor signal of the emptying of grey storehouse or cinder conveyer idle running arrived, actuating unit was that drive valve plate is identical and apply corresponding pressure and make it finish the lock airway dysfunction automatically with the sealing valve port face.The high pressure gas that enters from ash inlet is closed in the defeated ash tube, thus connect under can the omission system put grey ball valve, system architecture is simplified greatly, the reliability of safe operation increases, and over-the-road expense also reduces greatly.

Further specify below in conjunction with the embodiment that provides and the objective of the invention is how to realize.

Fig. 1 is the structural representation that embodiments of the invention provide.

Wherein 1 is defeated ash tube, and 1A is an ash inlet, and 1B is an ash hole, 2 are defeated grey main shaft, and 3 is conveyor screw, and 4 are end envelope frame, 4A is the end sealed cover, and 4B is a leakproofing material, and 5 is the location bearing body, 5A is a radial bearing, and 5B is an O-ring seal, and 6 are the sealing valve port, 7 is valve plate, and 7A is an O-ring seal, and 7B is a gusset, 8 is the covering sleeve, and 8A is a covering sleeve butt flange, and 8B is a cleaning door, 8C is the cleaning door end cap, and 8D is a gland, and 9 is slip cap, 9A is a protruding guide rail, and 10 for driving leading screw, and 11 for driving screw, 11A is for driving hollow shaft, 12 has been the sleeve of guide-localization effect, and 12A is the sleeve locating support, and 12B is the spill guide groove, 13 is rear side housing, 13A press seal end cap, 13B are leakproofing material, and 14 for deciding the torque friction power-transfer clutch.

The specific embodiment

The physical dimension of the ash discharge port that the physical dimension of valve port 6 and valve plate 7 and shape and it are sealed and shape should be consistent.Certainly should be similar in the given enforcement of Fig. 1 to the port sectional area of defeated ash tube 1.So commonly take circular basic geometric configuration, what link to each other with valve plate 7 is slip cap 9 and wherein drives leading screw 10.Stability when promoting valve plates 7 for assurance leading screw 10 and stressed homogeneity are provided with uniform gusset 7B (3-6 bar gusset bar can be set) in non-tight face one side of valve plate 7, and be fixed together with slip cap 9, make the propulsive effort of valve plate 7 when driving leading screw 10 evenly and reposefully be transferred to form on the valve plate 7 and seal with valve port 6 uniform contacts.Above slip cap 9 reaches leading screw 10 wherein and is fixed on the driving screw 11 on the covering sleeve 8 and drives the driver train that hollow shaft 11A forms straight line.Above drive element is fixed together by means of abutment sleeve 12 and sleeve locating support 12A and covering sleeve 8, has the good dust-proof effect except driving action.

In order to guarantee the directional tagging of abutment sleeve 12, design has an axial raised guide rail 9A on slip cap 9 especially, and together spill guide groove 12B arranged on abutment sleeve 12 inwalls, the anti-rotation structure of guiding of this device is formed in cooperation between the two, makes the linear drives power of screw 11 transmission be transmitted to drive valve plate 7 on the leading screw 10 reposefully and realizes and being sealed and matched of valve port 6.

Driving hollow shaft 11A passes with the output shaft of exterior power source from the rear side housing 13 of covering sleeve 8 and links to each other.In order to guarantee that linear drives produces enough sealing loaies; guarantee simultaneously the unlikely excessive damage that causes of linear drives power again; hollow shaft 11A links to each other with outer power by a friction clutch 14, can guarantee to form the transmission of nominal torque like this, reaches the self-protection effect.

In addition, be not subjected to the influence of high dirt powder environment for each parts running that prevents driver train, except rotatable parts have been taked strict seal approach, on outside envelope tube 8, offer a cleaning door 8B, on deashing flap 8C is arranged, its effect is the dust stratification of removing in the covering sleeve 8, enters in the gland cover to prevent too much ash.

7 depended on pressure of valve port 6 and valve plate seal firmly, so sealing surface lapped finish mutually, its geometric configuration also should be consistent, and plane, spherical zone face or the conical surface all can.For guaranteeing sealing effectiveness, can also take encapsulating method soft, that scleroma is closed to come the reinforced seal effect, concrete direction is to process 1-2 road circular groove on the sealing surface of valve plate 7, is embedded in 1-2 road silicone rubber O-ring 7A at groove, and air-tightness is improved greatly.

Accompanying drawing 1 is given is the horizontal port that will sealing valve port 6 be located at defeated ash tube 1, i.e. the end of entity spiral forms valve plate 7 and forms from the locking system with horizontal drive mechanism.Simultaneously also valve port 6 can be located at ash hole 1B place, make the sealing surface of sealing valve port towards last formation level, this moment also can with valve plate and all 90 ° of driver trains that become vertically downward of driver train corner form another kind of shape and structure mode from the locking system.It is power that total system is taked motor.If directly take hydraulic pressure or vapour pressure to do linear drives, then hollow drive shaft 11A can directly link to each other with its piston rod, and the setting pressure protection also can reach same effect.

Cinder conveyer by the above made brand new of design philosophy has the coupler lock function.When finishing defeated ash back or intermittence, realize automatic gas-locking.Specifically can after disconnected gray signal sends, start power output system automatically, make valve plate 7 be enclosed in to form on the valve port 6 and lock gas with level pressure from the locking system at the circuit control part.Like this, as long as restarting locking mechanism before next cinder conveyer work opens the dense block gas port, then can realize defeated uniformly ash manipulation immediately.All work control continuously, reliably, not fragile parts, simple in structure, can save grey ball valve when being used in ash disposal of blast furnace gravity and the bag-type dust removal system and big at investment that has reduced total system and operating cost, and accident to leak the coal gas is reduced greatly, so this progress that improves the blast furnace dedusting system has important realistic function.

Claims

1, from the locking cinder conveyer, comprise in the structure and having into, ash hole (1A, defeated ash tube (1) 1B), even feeding mechanism in the defeated ash tube (1), stand arrangement with feeder bonded assembly power take-off mechanism and fixing defeated ash tube (1), it is characterized in that having added an ash hole self closing gas sealing mechanism in the ash discharge port, the sealing device is located at the terminal valve port (6) of defeated ash tube (1) by one, the valve plate (7) that is complementary with valve port (6) and the driver train of valve plate (7) are formed, wherein valve port (6) is complementary with the geometric configuration of valve plate (7) and the cross-sectional plane of size and defeated ash tube port, with driving leading screw (10) in valve plate (7) bonded assembly tubular slip cap (9) and the slip cap (9) and with drive hollow shaft (11A) bonded assembly and drive screw (11) and form valve plate (7) linear driving mechanism, all device is assembled into one by means of the sleeve locating support (12A) on abutment sleeve (12) and the tube, is positioned on the covering sleeve (8).

2, said according to claim 1 from the locking cinder conveyer, it is characterized in that design has protruding guide rail (9A) on slip cap (9) outer wall, corresponding design has indent guide groove (12B) on abutment sleeve (12) inwall, and assembly between the two forms the guiding rotation-preventing mechanism of driver train.

3, said according to claim 1 from the locking cinder conveyer, it is characterized in that driving hollow shaft (11A) from the end cap (13) of covering sleeve (8) pass with outside drive propulsion source and link to each other by friction clutch (14).

4, said according to claim 3 from locking ash machine, it is characterized in that covering sleeve (8) is arranged with cleaning door (8B) up and down.

5, said according to claim 1 from the locking cinder conveyer, it is characterized in that the sealing surface that valve port (6) matches with valve plate (7) can be plane, spherical zone face, the conical surface is established one to two road silicone rubber O-ring (7A) on the sealing surface of the cooresponding valve port of valve plate (7) (6).