CN213362514U - Spiral slag discharging machine with double cooling channels - Google Patents

Abstract

The utility model discloses a spiral mucking machine of two cooling passageways belongs to spiral mucking machine equipment field. Poor and the complicated problem of structure of mucking machine cooling effect among the prior art, the utility model provides a two cooling channel's spiral mucking machine, it includes the casing, be provided with lime-ash import and lime-ash export on the casing, the outside cover of casing is equipped with the outer tube, be provided with first import and first export on the outer tube, the inside conveying mechanism that is provided with of casing, conveying mechanism is connected with actuating mechanism, conveying mechanism's inside is the cavity, conveying mechanism's both ends all are connected with the protective sheath, be provided with the second export on being close to the protective sheath of actuating mechanism one end, it is provided with the second import on the protective sheath of actuating mechanism one end to keep away from. The utility model discloses a two cooling channel cool off the spiral goes out the sediment machine, play bigger cooling efficiency in limited space, safe and reliable, compact structure, high-efficient environmental protection has guaranteed the safe operation of follow-up equipment.

Description

Spiral slag discharging machine with double cooling channels

Technical Field

The utility model belongs to spiral mucking machine equipment field, more specifically say, relate to a spiral mucking machine of two cooling channels.

Background

The slag extractor is an important device in the circulating fluidized bed gas producer device and is used for conveying ash from a slag discharging pipe of a hearth. In order to prevent the ash temperature from being too high, which affects the long-distance transportation of the ash by the follow-up slag transportation equipment and the storage of the ash, the ash outlet temperature must be ensured to be lower than 80 ℃. The traditional cooling mode is direct water cooling, spouts the sediment with water, causes thermal pollution, influences operational environment on the one hand, and on the other hand has changed the rerum natura of lime-ash, produces a large amount of sewage, and lime-ash and sewage are difficult to separate and lead to the increase of the later stage technology processing degree of difficulty, cause the lime-ash caking even, block up equipment, therefore at present most adopt indirect cooling spiral mucking machine, so how to improve cooling efficiency in finite space and seem especially important.

Corresponding improvement is also carried out aiming at the problems, such as Chinese patent application No. CN201621246899.6, the publication date is 29.8.2017, the patent discloses a driving adjustable spiral slag discharging machine, which comprises a base, a cylinder body is arranged on the base, the front end of the cylinder body is provided with a discharge port, the rear end is provided with a feed port, a spiral shaft is arranged in the cylinder body, a spiral blade is arranged on the spiral shaft, the rear end of the spiral shaft penetrates through the rear end of the cylinder body and is connected with a rear bearing seat, the front section of the spiral shaft penetrates through the front end of the cylinder body and is connected with a front bearing seat, the front end of the cylinder body is provided with a support frame, the upper end surface and the two side end surfaces of the support frame are both provided with a row of spiral positioning holes, the support frame is provided with a detachable motor mounting plate through a screw rod, the front end of the screw shaft is provided with a driven chain wheel, and the driving chain wheel is connected with the driven chain wheel through a chain. The disadvantages of the patent are that: the business turn over water pipe is with one side, leads to the rivers sectional area to be less than center pin center cavity cross-section inevitable, and the discharge of unit interval has received the restriction, influences the heat that the cooling water unit interval was taken away, and on the other hand, the water in this cooling channel probably is difficult for the exhaust, and the low temperature environment freezes when having the blowing out and destroys the hidden danger of main shaft.

If again like chinese patent application No. CN201822025783.5, the publication date is 24.9.2019, this patent discloses a high-efficient safe mucking machine device, including the ash chute, broken sediment machine and spiral mucking machine, the ash chute is provided with scraper chain, scraper chain suit is on head pulley and tailwheel, the scraper chain below is provided with the bearing roller, the bearing roller is made with seamless steel pipe, and the surface cover of bearing roller is equipped with the wearing layer that supplementary antifriction plate preparation formed, ash chute horizontal end is located under broken sediment machine discharge end, the feed inlet of broken sediment machine is located under the boiler ash collecting bucket, install crushing roller in the broken sediment machine side by side, the shell of broken sediment machine is bilayer structure, and be provided with cold water channel between the bilayer shell of broken sediment machine, be provided with screw conveyor in the spiral mucking machine, be provided with the intermediate layer on the inner wall of spiral mucking machine. The disadvantages of the patent are that: the heat dissipation thermal resistance of the ash slag is large, heat is transferred to water in the pipe through the shell and the spiral heat exchange pipe, the heat exchange area is limited, and the heat exchange effect is influenced.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

Poor and the complicated problem of structure of mucking machine cooling effect among the prior art, the utility model provides a two cooling channel's spiral mucking machine. The utility model discloses a two cooling channels cool off and the heat transfer to spiral slag extractor, exert bigger cooling efficiency in limited space, safe and reliable, compact structure, high-efficient environmental protection has guaranteed the safe operation of follow-up equipment.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a two cooling channel's spiral mucking machines, which comprises a housin, be provided with lime-ash import and lime-ash export on the casing, the outside cover of casing is equipped with the outer tube, be provided with first import and first export on the outer tube, the inside conveying mechanism that is provided with of casing, conveying mechanism is connected with actuating mechanism, conveying mechanism's inside is the cavity, conveying mechanism's both ends all are connected with the protective sheath, be provided with the second export on being close to the protective sheath of actuating mechanism one end, it is provided with the second import on the protective sheath of actuating mechanism one end to keep away from.

Furthermore, conveying mechanism is including setting up the spiral main shaft in the casing inside, and the outside of spiral main shaft is provided with helical blade, and the inside of spiral main shaft is the cavity, and spiral main shaft both ends all are connected with the protective sheath.

Further, the spiral main shaft is a spiral groove pipe.

Furthermore, the bottom of outer tube is provided with first blow off pipe, and the protective sheath bottom is provided with the second blow off pipe, the protective sheath is the protective sheath that is provided with the second export, all is provided with the blowoff valve on first blow off pipe and the second blow off pipe.

Furthermore, a first thermocouple is arranged on the outer sleeve and is in contact with the shell; the protective sleeve is provided with a second thermocouple, the protective sleeve is provided with a second outlet, and the second thermocouple is in contact with the outside of the spiral main shaft.

Furthermore, the outer sleeve and the protective sleeve are both provided with alarms, and the first thermocouple and the second thermocouple are respectively electrically connected with the corresponding alarms.

Furthermore, a plurality of studs are arranged along the axial direction and the radial direction of the inner part of the shell.

Furthermore, the studs are uniformly arranged along the axial direction of the shell, and the distance between two adjacent studs on the upper part of the shell is greater than the distance between two adjacent studs on the bottom of the shell.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses form first cooling channel in the clearance between outer sleeve pipe and casing, the inside of the inside conveying mechanism of casing is the cavity setting and forms second cooling channel, and two cooling channels can effectively improve the effect of cooling and heat transfer in the spiral mucking machine, play bigger cooling efficiency in limited space, safe and reliable, compact structure, high-efficient environmental protection has guaranteed the safe operation of follow-up equipment;

(2) the utility model adopts the spiral groove pipe as the spiral main shaft, which enlarges the heat exchange area and improves the heat transfer effect; the spiral distance and the spiral direction outside the spiral main shaft are the same as those of the spiral blades arranged on the spiral main shaft, so that the welding and assembly of the spiral blades are facilitated; corresponding spiral convex lines are arranged in the spiral main shaft, and the spiral convex lines and the axis form a certain inclination angle, so that cooling water in the spiral main shaft moves spirally to generate local secondary flow, and the heat transfer effect is further improved;

(3) the utility model is provided with the blow-off pipes at the bottom of the outer sleeve and the bottom of the protective sleeve, the blow-off pipes ensure that the water flow in the two cooling channels can be exhausted, the water in the blowing-out cooling channel is prevented from freezing in winter to damage the equipment, and the service life of the equipment is effectively prolonged; the outer sleeve and the protective sleeve are provided with thermocouples, and the thermocouples monitor the temperature of the shell and the temperature of the spiral main shaft in real time, so that damage caused by overhigh temperature of the shell and the spiral main shaft is avoided;

(4) the utility model discloses be connected with two alarms electricity respectively with two thermocouples, once the temperature of casing or spiral main shaft surpassed the default of alarm, the alarm began to report to the police, in time effectual warning staff notices, and the staff of being convenient for adjusts, guarantees the security and the promptness of whole process;

(5) the utility model is provided with a plurality of studs along the axial direction and the radial direction inside the shell, and the arrangement of the studs enlarges the effective heat transfer area on one hand and is beneficial to the heat dissipation of the shell; on the other hand, cooling water generates turbulence, heat transfer is enhanced, and cooling efficiency is improved; and the studs in the shell are arranged in a sparse and dense mode, so that more ash and slag are contacted with the lower half part of the shell, the shell is economical and reasonable, the cost is saved, and the heat dissipation effect of the shell is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of the dual cooling channels;

fig. 3 is a view along the line a-a in fig. 2.

In the figure: 1. a drive mechanism; 2. a second outlet; 3. a first outlet; 4. an ash inlet; 5. an outer sleeve; 6. a first cooling channel; 7. a housing; 8. a helical blade; 9. a helical main shaft; 10. a first inlet; 11. a second inlet; 12. an ash outlet; 13. a supporting seat; 14. a first thermocouple; 15. a stud; 16. a first drain pipe; 17. a first waste valve; 18. a second blowoff valve; 19. a second sewage draining pipe; 20. a second thermocouple; 21. a frame; 22. a second cooling channel.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

As shown in fig. 1, 2 and 3, the screw slag extractor with double cooling channels comprises a housing 7, wherein an ash inlet 4 and an ash outlet 12 are arranged on the housing 7, specifically, the ash inlet 4 is arranged at the upper part of the housing 7, and the ash outlet 12 is arranged at the bottom of the housing 7. The outer sleeve 5 is sleeved outside the shell 7, the outer sleeve 5 and the shell 7 are concentrically arranged, the outer sleeve 5 and the shell 7 are both internally hollow cylinders, an annular gap is formed between the outer sleeve 5 and the shell 7, the annular gap is called as a first cooling channel 6, the outer sleeve 5 is provided with a first inlet 10 and a first outlet 3, and cooling water enters the first cooling channel 6 through the first inlet 10 and overflows from the first outlet 3. With reference to fig. 1, the first outlet 3 is arranged on the left side of the first inlet 10, i.e. the cooling water flow is from right to left, while the ash in the housing 7 is from left to right, the cooling direction of the water flow is opposite to the ash discharging direction, so that a better cooling effect can be achieved. The conveying mechanism is arranged in the shell 7, the conveying mechanism is connected with the driving mechanism 1, the driving mechanism 1 is arranged on the frame 21, and the outer sleeve 5 is fixed on the frame 21 through the supporting seat 13. The driving mechanism 1 provides a power source for the conveying mechanism, so that the conveying mechanism is driven to convey the ash. The driving mechanism 1 can be driven by a motor, and the driving mechanism 1 is a prior art, so detailed description is not provided in the present invention. The interior of the conveying mechanism is a cavity which is a second cooling channel 22, and cooling water flows in the cavity to perform a cooling and heat absorbing function on the conveying mechanism. Conveying mechanism's both ends all are connected with the protective sheath, are provided with second export 2 on being close to the protective sheath of actuating mechanism 1 one end, are provided with second import 11 on keeping away from the protective sheath of actuating mechanism 1 one end, and such setting makes the flow direction of cooling water in second cooling channel 22 opposite with the direction of delivery of lime-ash, further guarantees the heat transfer effect of cooling water. The utility model discloses a set up two cooling channel, can effectively improve the inside cooling of spiral mucking machine and the effect of heat transfer to do not add unnecessary part, thereby improve the bigger cooling efficiency of performance in current finite space, safe and reliable, compact structure, high-efficient environmental protection has guaranteed the safe operation of follow-up equipment.

Specifically, in this embodiment, the conveying mechanism includes a spiral main shaft 9 disposed inside the housing 7, a spiral blade 8 is disposed outside the spiral main shaft 9, a cavity is disposed inside the spiral main shaft 9, and the cavity inside the spiral main shaft 9 is the second cooling channel 22. One end of the spiral main shaft 9 extends out from the inside of the shell 7 and is connected with the driving mechanism 1, a protective sleeve is sleeved on the outer side of one end of the spiral main shaft 9 extending out from the inside of the shell 7, and a second outlet 2 is formed in the protective sleeve. The protective sheath is just the cylinder, and inside is the cavity, has seted up the apopore on the inside spiral main shaft 9 of protective sheath, and rivers in the second cooling channel 22 can flow to the protective sheath in from the apopore, finally flow from second export 2. The other end of the spiral main shaft 9 is connected with a protective sleeve, and a second inlet 11 is arranged on the protective sleeve at the other end. The end part of the protective sleeve provided with the second inlet 11 and directly connected with the spiral main shaft 9 through a flange, namely, the spiral main shaft 9 does not extend into the protective sleeve at the end, cooling water directly enters the inner cavity of the spiral main shaft 9 from the second inlet 11, a through hole is not required to be formed in one end of the spiral main shaft 9 far away from the driving mechanism 1, the working procedure is saved, and meanwhile, the problem that the strength is reduced due to too much hole forming of the spiral main shaft 9 is solved. The cooling water enters the interior of the screw spindle 9 through the second inlet 11, flows inside the screw spindle 9, and is finally discharged through the second outlet 2. In order to further guarantee the heat exchange effect, preferably, the spiral main shaft 9 is a spiral groove pipe, the distance between the external spiral grooves of the spiral main shaft 9 is the same as the distance between the spiral blades 8, the external spiral direction of the spiral main shaft 9 is also the same as the spiral direction of the spiral blades 8, the width of the external spiral grooves is 1-2 mm larger than the thickness of the spiral blades 8, the welding and assembling of the spiral blades 8 on the spiral main shaft 9 are facilitated, and the installation efficiency is improved. The corresponding spiral burr is arranged in the spiral main shaft 9, a certain inclination angle is formed between the spiral burr and the axis of the spiral main shaft 9, so that the cooling water in the spiral main shaft 9 can move spirally to generate local secondary flow, pressure gradient is generated by body resistance caused by the spiral burr in the spiral main shaft, a boundary layer is separated, the inner surface area of a spiral groove pipe is 1.5-2 times larger than that of a common light pipe, the heat exchange area is enlarged, and the heat transfer effect is improved.

Example 2

Basically, with embodiment 1, in order to guarantee that the hydroenergy in two cooling channels can be arranged to the greatest extent, do not damage equipment, this embodiment is in the bottom of outer tube 5 is provided with first blow off pipe 16, and the protective sheath bottom is provided with second blow off pipe 19, the protective sheath is for being provided with the protective sheath of second export 2, all is provided with the blowoff valve on first blow off pipe 16 and the second blow off pipe 19. The arrangement of the two drain pipes helps to drain cooling water in the two cooling channels to the greatest extent, so that the damage of the spiral slag extractor caused by freezing of water in the two cooling channels in winter is avoided, and the cooling water is prevented from staying in the equipment for a long time to cause certain corrosive wear to the equipment. Be provided with first blowoff valve 17 on the first blow off pipe 16 that corresponds, be provided with second blowoff valve 18 on the second blow off pipe 19, the setting of blowoff valve can carry out a control to the discharge of rivers, and the operation of being convenient for is convenient for and masters blowdown speed, only needs when spiral mucking machine stop work, opens two valves and can carry out the drainage operation that corresponds.

The outer sleeve 5 is also provided with a first thermocouple 14, and the first thermocouple 14 is in contact with the shell 7; the protective sleeve is also provided with a second thermocouple 20, the protective sleeve is provided with a second outlet 2, and the second thermocouple 20 is in contact with the outside of the spiral spindle 9. The first thermocouple 14 and the second thermocouple 20 can respectively monitor the temperature of the shell 7 and the spiral spindle 9, so that a worker can know the real-time temperature of the shell 7 and the spiral spindle 9 conveniently and timely adjust the temperature. In order to further guarantee the timeliness and the security of whole process, this embodiment all is provided with the alarm on outer casing 5 and protective sheath, first thermocouple 14 and second thermocouple 20 are connected with the alarm electricity that corresponds respectively, and this protective sheath is for being provided with the protective sheath of second thermocouple 20, and two thermocouples feed back data to the alarm, in case the data of feedback surpass the numerical value that the alarm set for, the alarm will work in order to remind the staff to notice, in time adjusts whole process, has increased the security and the timeliness of whole process.

In order to further ensure the smooth proceeding of the whole cooling process, the first outlet 3, the first inlet 10, the second outlet 2 and the second inlet 11 are connected with the pipeline through valves in the embodiment, the four valves are all arranged in an interlocking manner with the two thermocouples, when the two thermocouples display over-temperature alarm and feed temperature signals back to the control center, the control center controls the four valves to adjust the opening degree of the four valves, the opening degree of the valves is increased, and the shell 7 and the spiral spindle 9 are prevented from being damaged by high temperature. Simultaneously four valves all are the interlocking setting with actuating mechanism 1, and actuating mechanism 1 must not start when four valves are not opened, and actuating mechanism 1 during operation, four valves must not close, and such design makes the cooling process safe and reliable more, further improves the life of whole spiral mucking machine.

Example 3

Basically like embodiment 2, in order to further enhance the cooling efficiency and cooling effect of the spiral slag extractor, in this embodiment, a plurality of studs 15 are arranged along the axial direction and the radial direction inside the shell 7, the studs 15 are welded inside the shell 7, and the arrangement of the studs 15 enlarges the effective heat transfer area on one hand, and contributes to heat dissipation of the shell 7; on the other hand, cooling water generates turbulence, heat transfer is enhanced, and cooling efficiency is improved. Specifically, the studs 15 are uniformly arranged along the axial direction of the shell 7, and the distance between two adjacent studs 15 at the upper part of the shell 7 is greater than the distance between two adjacent studs 15 at the bottom of the shell 7, so that ash slag in the spiral slag extractor in the actual operation process only has a height less than three quarters of the shell 7 and contacts more with the bottom of the shell 7, the number of the studs 15 is properly increased at the bottom of the shell 7, the studs 15 in the shell 7 are arranged in a sparse-upper-lower-dense manner, that is, the welded studs 15 are arranged more tightly at the lower half part of the shell 7 than at the upper half part, the radial direction of the shell 7 is taken as a reference, the horizontal center line in the radial direction of the shell 7 and the vertical center line form an angle of 0-45 degrees in the upper half part of the shell 7, and the distance between two adjacent studs 15 in the radial direction of the shell 7; in the upper half part of the shell 7, when the horizontal center line and the vertical center line in the radial direction of the shell 7 are within 45-90 degrees, the distance between two studs 15 adjacent to each other in the radial direction of the shell 7 is 90-120 mm, and in the lower half part of the shell 7, the distance between two studs 15 adjacent to each other in the radial direction of the shell 7 is about 60-90 mm. The heat dissipation effect of the shell 7 is improved while the cost is saved.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims (8)

1. The utility model provides a two cooling channel's spiral mucking machines, includes casing (7), is provided with ash inlet (4) and ash outlet (12) on casing (7), and the outside cover of casing (7) is equipped with outer tube (5), is provided with first import (10) and first export (3) on outer tube (5), its characterized in that: the conveying mechanism is arranged inside the shell (7) and connected with the driving mechanism (1), the cavity is formed inside the conveying mechanism, the two ends of the conveying mechanism are connected with the protective sleeve, the protective sleeve close to one end of the driving mechanism (1) is provided with a second outlet (2), and the protective sleeve far away from one end of the driving mechanism (1) is provided with a second inlet (11).

2. The spiral slag extractor with double cooling channels as claimed in claim 1, wherein: conveying mechanism is provided with helical blade (8) including setting up spiral main shaft (9) inside casing (7), the outside of spiral main shaft (9), and the inside of spiral main shaft (9) is the cavity, and spiral main shaft (9) both ends all are connected with the protective sheath.

3. The spiral slag extractor with double cooling channels as claimed in claim 2, wherein: the spiral main shaft (9) is a spiral groove pipe.

4. The spiral slag extractor with double cooling channels as claimed in claim 1, wherein: the bottom of outer tube (5) is provided with first blow off pipe (16), and the protective sheath bottom is provided with second blow off pipe (19), the protective sheath is the protective sheath that is provided with second export (2), all is provided with the blowoff valve on first blow off pipe (16) and the second blow off pipe (19).

5. The spiral slag extractor with double cooling channels as claimed in claim 4, wherein: the outer sleeve (5) is also provided with a first thermocouple (14), and the first thermocouple (14) is in contact with the shell (7); and a second thermocouple (20) is also arranged on the protective sleeve, and the second thermocouple (20) is in contact with the outer part of the spiral main shaft (9).

6. The spiral slag extractor with double cooling channels as claimed in claim 5, wherein: the outer sleeve (5) and the protective sleeve are both provided with alarms, and the first thermocouple (14) and the second thermocouple (20) are respectively electrically connected with the corresponding alarms.

7. The spiral slag extractor with double cooling channels as claimed in claim 1 or 4, wherein: a plurality of studs (15) are arranged along the axial direction and the radial direction inside the shell (7).

8. The spiral slag extractor with double cooling channels as claimed in claim 7, wherein: the studs (15) are uniformly arranged along the axial direction of the shell (7), and the distance between two adjacent studs (15) at the upper part of the shell (7) is greater than the distance between two adjacent studs (15) at the bottom of the shell (7).

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