CN215049899U - Compound coal charging hole cover - Google Patents
Compound coal charging hole cover Download PDFInfo
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- CN215049899U CN215049899U CN202120311246.6U CN202120311246U CN215049899U CN 215049899 U CN215049899 U CN 215049899U CN 202120311246 U CN202120311246 U CN 202120311246U CN 215049899 U CN215049899 U CN 215049899U
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Abstract
The utility model relates to a compound coal charging hole cover, which comprises an upper cover and a lower cover, wherein the lower cover is provided with a cavity part and a non-cavity part, the cavity part is internally provided with refractory materials, the non-cavity part is provided with a plurality of round steel holes, round steel is pre-embedded in the round steel holes, and one end surface of the lower cover is provided with a circular opening; the upper cover is covered on the circular opening and is provided with a surfacing hole corresponding to the round steel hole. The utilization of the thermal efficiency of the carbonization chamber of the coke oven is greatly improved, the operation environment of the oven top is improved, and the environmental pollution caused by gas leakage and gas evolution is also avoided; the failure rate of the equipment is reduced, the consumption of the electromagnet of the uncovering machine is greatly reduced, the labor intensity of workers is reduced, the consumption of spare parts is reduced, and the production cost of enterprises is greatly reduced.
Description
Technical Field
The utility model relates to a coke oven equipment technical field, more specifically say, it relates to a double entry coal handhole door.
Background
The charging hole cover is an important device directly influencing the energy consumption of the coke oven, and is also one of the large consumption parts of the oven protecting iron of the coke oven, and the charging amount of one coke oven is basically 440. When equipment is in failure or short service life and replaced, a large amount of heat energy and coal gas can be dissipated, so that high energy consumption and environmental protection are caused.
At present, the use structure forms of the coal charging hole cover of the coke oven of the iron and steel enterprise are divided into three types, the first method is that refractory materials are directly poured at the bottom of the first integral casting forming, and the refractory materials are directly contacted with gas in the oven; the second type is integrally cast and formed, and pouring materials are poured in a cavity of the casting die through a preformed hole in the upper part of the casting die; the third is a split type, and the lower part and the upper part are connected through a bolt or a screw. The refractory materials include common refractory castable and ceramics.
The three structures have the defects that: the first is the oldest structure, the refractory material is directly washed by airflow and easily falls off into the furnace, the heat energy in the furnace dissipates quickly, and the service life is short. The second structure has limitation on the pouring process, the pouring is difficult to directly pour into the cavity through the reserved hole, the middle part is a single-layer mechanism, the heat loss and energy consumption are high, and the service life is short. The third type is the most advanced one at present, but because of the bolt and pull rod connecting mechanism, the bolt is influenced by the hoisting vibration of the blast furnace and the cover lifting machine, the bolt is easy to loosen and is broken at high temperature, so that the lower part of the whole furnace cover falls into the furnace.
Therefore, the problem to be solved at present is to improve the structural stability of the hole cover, prolong the service life and ensure the effect of reducing the loss.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a double entry dress handhole door can guarantee the leakproofness and the wholeness of handhole door, realizes increase of service life and avoids loss heat energy and coal gas, guarantees simultaneously that the energy consumption is low, realizes energy-concerving and environment-protective.
The above technical purpose of the present invention can be achieved by the following technical solutions: a duplex coal charging hole cover comprises an upper cover and a lower cover, wherein the lower cover is provided with a cavity part and a non-cavity part, refractory materials are arranged in the cavity part, the non-cavity part is provided with a plurality of round steel holes, round steel is pre-embedded in the round steel holes, and one end surface of the lower cover is provided with a circular opening; the upper cover is covered on the circular opening and is provided with a surfacing hole corresponding to the round steel hole.
In one embodiment, the round steel holes comprise a near-center round steel hole close to the center of the lower cover and a far-center round steel hole positioned on the outer edge of the lower cover; the near-center round steel holes and the far-center round steel holes are arranged around the center of the lower cover at equal intervals.
In one embodiment, the upper cover is provided with a near center overlaying hole and a far center overlaying hole which correspond to the near center round steel hole and the far center round steel hole, and the near center overlaying hole and the far center overlaying hole are connected through a casting rib plate.
In one embodiment, a bolt embedded hole is formed in the center of the lower cover, and a mounting hole corresponding to the bolt embedded hole is formed in the center of the upper cover; the upper cover and the lower cover are fixed by inserting bolts between the bolt embedded holes and the mounting holes.
In one embodiment, the upper cover and the lower cover are both disc-shaped, and the radius of the upper cover is smaller than that of the lower cover.
In one embodiment, the upper cover is overlapped with the lower cover, and the upper cover and the lower cover are correspondingly provided with clamping parts at the overlapped position.
In one embodiment, the clamping part comprises a tooth socket which is positioned on the upper cover and is arranged corresponding to the lower cover.
In one embodiment, the joint of the upper cover and the lower cover is subjected to surfacing welding according to requirements.
In one embodiment, the upper cover is provided with a spacing area corresponding to the cavity part.
In one embodiment, the cavity part is internally provided with a refractory material, and the refractory material comprises, by weight, 40-65 parts of aggregate, 25-40 parts of 60-bauxite, 1-10 parts of silicon dioxide, 1-8 parts of alumina, 1-8 parts of cement and 0.1-0.5 part of an auxiliary agent.
In one embodiment, the lightweight aggregate has an alumina content of 43 wt% and a particle size of 0.5 to 8 mm.
In one embodiment, the silica is 200 mesh.
In one embodiment, the alumina is alpha-alumina.
In one embodiment, the cement is CA-70 aluminate cement.
In one embodiment, the auxiliary agent is sodium hexametaphosphate.
To sum up, the utility model discloses following beneficial effect has:
firstly, the refractory material is put in through the arrangement of the sector cavity part, so that the heat loss rate is reduced, and the strength of the lower cover can be ensured;
secondly, corresponding round steel holes and surfacing welding holes are formed between the upper cover and the lower cover, round steel is preset in the round steel holes, the round steel holes and the surfacing welding holes can be conveniently aligned, meanwhile, surfacing welding is carried out from the surfacing welding holes, the upper cover and the lower cover are ensured to be fastened and connected, bolt pre-buried holes are formed in the centers of the upper cover and the lower cover, and the fastening effect between the upper cover and the lower cover is enhanced again by inserting bolts;
thirdly, the purpose of three-stage fixation of the upper cover and the lower cover is realized through the matching of the tooth mouths and the tooth sockets;
fourthly, the service life of the hole cover is prolonged, the heat loss of the furnace cover is reduced, the utilization of the heat efficiency of the carbonization chamber of the coke oven is greatly improved, the operation environment of the furnace top is improved, and the environmental pollution caused by gas leakage and gas bleeding is also avoided; the failure rate of the equipment is reduced, the consumption of the electromagnet of the uncovering machine is greatly reduced, the labor intensity of workers is reduced, the consumption of spare parts is reduced, and the production cost of enterprises is greatly reduced.
Drawings
FIG. 1 is a schematic view of the structure of the manhole cover of the present invention;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic view of the lower cover structure;
FIG. 4 is a schematic view of the fixing structure of the upper cover and the annular opening;
FIG. 5 is a schematic view of the fit of the mouthpiece to the socket;
fig. 6 is a manufacturing flow chart of the present invention.
In the figure: 1-lower cover, 2-refractory, 3-upper cover, 4-sealing surface, 5-round steel hole, 51-near-center round steel hole, 52-far-center round steel hole, 6-casting rib plate, 7-sector cavity, 8-bolt pre-buried hole, 9-mounting hole, 10-bolt, 11-tooth mouth, 12-build-up welding hole, 13-vacancy, 14-solid position, 15-notch and 16-limit convex rib.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.
Referring to fig. 1, the compound coal charging hole cover comprises an upper cover 3 and a lower cover 1, wherein the lower cover 1 is provided with a cavity part and a non-cavity part, a refractory material 2 is arranged in the cavity part, the non-cavity part is provided with a plurality of round steel holes 5, round steel is pre-embedded in the round steel holes 5, and one end surface of the lower cover 1 is provided with a circular opening; the upper cover 3 covers the circular ring-shaped opening and is provided with a surfacing hole 12 corresponding to the round steel hole 5. Through pre-buried round steel that has in round steel hole 5, build-up welding is being carried out through the pile welding hole 12 on the upper cover, improves the fastness of upper cover 3 and lower cover 1 through build-up welding and round steel cooperation. Compared with the prior art that the fixing effect is better through the connection of bolts or screws.
Referring to fig. 1-3, the round steel holes 5 comprise four near-center round steel holes 51 near the center of the lower cover 1 and eight far-center round steel holes 52 on the outer edge of the lower cover 1; the near-center round steel holes 51 and the far-center round steel holes 52 are arranged around the center of the lower cover 1 at equal intervals; the inner diameter of the round steel hole 5 is 16mm, round steel is pre-embedded in the round steel hole 5, and one end surface of the lower cover 1 is provided with a circular opening; the upper cover 3 is covered on the circular opening and is provided with surfacing holes 12 corresponding to the round steel holes 5, the upper cover 3 and the lower cover 1 are both disc-shaped, the cavity part of the lower cover comprises four fan-shaped cavities 7, the included angle of each fan-shaped cavity 7 is 90 degrees, the radius of the upper cover 3 is smaller than that of the lower cover 1, and the upper cover 3 is covered on the circular opening to generate an interface gap, so that surfacing can be carried out, and the sealing performance of the upper cover 3 and the lower cover 1 is improved; the upper cover 3 is provided with four near-center overlaying welding holes 12 and eight far-center overlaying welding holes 12 corresponding to a near-center round steel hole 51 and a far-center round steel hole 52, the near-center overlaying welding holes 12 and the far-center overlaying welding holes 12 are connected through cast rib plates 6, one cast rib plate 6 is arranged at every two far-center overlaying welding holes 12, the included angle of every two adjacent cast rib plates 6 is 90 degrees, the cast rib plates 6 divide the upper cover 3 into four fan-shaped areas, and the fan-shaped areas correspond to the fan-shaped cavities 7 one by one; leaving four far center build-up weld holes 12 without cast rib plates 6 positioned with the near center build-up weld holes 12.
An oval bolt embedded hole 8 is formed in the center of the lower cover 1, and a mounting hole 9 corresponding to the bolt embedded hole 8 is formed in the center of the upper cover 3; the upper cover 3 and the lower cover 1 are fixed by inserting bolts 10 between the bolt pre-buried holes 8 and the mounting holes 9; the bolt 10 is flat, the head of the bolt 10 is provided with a bolt head which is wider than the width of the bolt embedded hole 8, and the upper cover 3 and the lower cover 1 are fixed by twisting the bolt head. The secondary reinforcement of the upper cover and the lower cover is realized by inserting bolts into the bolt pre-buried holes and the mounting holes.
Referring to fig. 4 and 5, the upper cover 3 is partially overlapped with the lower cover 1, and a clamping portion is correspondingly arranged at the overlapping position of the upper cover 3 and the lower cover 1; the joint portion is including being located the tooth mouth 11 that covers, and wherein tooth mouth 11 is located the outer department of following of upper cover 3 lower bottom surface, and tooth mouth 11 vertically is L shape to outwards correspond the alveolus that sets up with lower cover 1, the alveolus is square interval arrangement on ring shape opening, forms vacancy 13 and real position 14, and real position 14 is 7 fonts, has the notch 15 of transversely seting up on the real position 14, and notch 15 one end has spacing protruding muscle 16. During the in-service use, tooth mouth 11 is by vacancy 13 downstream to keep same level with real position 14, with clockwise or anticlockwise rotatory upper cover 3, make tooth mouth 11 get into real position notch 15, tooth mouth 11 can't remove again under spacing protruding muscle 16 separation, and tooth mouth 11 fixes in notch 15 this moment, improves the fixed effect of upper cover 3 and lower cover 1. And realizing third reinforcement.
The cavity part is internally provided with a refractory material, and the refractory material comprises 40-65 parts of aggregate, 25-40 parts of 60 bauxite, 1-10 parts of silicon dioxide, 1-8 parts of alumina, 1-8 parts of cement and 0.1-0.5 part of auxiliary agent.
The coal-charging hole cover interlayer heat-insulating material is prepared from the following effective components in parts by weight as shown in table 1:
table 1 examples 1-3 amounts of active ingredients
The service life of the hole cover reaches 2 years, the surface temperature of the furnace cover in a coking period is reduced by 84-105 ℃, and the heat loss of the furnace cover is reduced by more than 44%. The air temperature is measured at the height of 0.5m of the furnace top, the temperature can be reduced by 6 ℃ in the initial coking period and 8 ℃ in the final coking period, the utilization of the thermal efficiency of the carbonization chamber of the coke oven is greatly improved, the operation environment of the furnace top is improved, and the environmental pollution caused by gas leakage and gas evolution is also avoided; the failure rate of the equipment is reduced, the consumption of the electromagnet of the uncovering machine is greatly reduced, the labor intensity of workers is reduced, the consumption of spare parts is reduced, and the production cost of enterprises is greatly reduced.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The compound coal charging hole cover is characterized by comprising an upper cover (3) and a lower cover (1), wherein the lower cover (1) is provided with a cavity part and a non-cavity part, the non-cavity part is provided with a plurality of round steel holes (5), round steel is pre-embedded in the round steel holes (5), and one end surface of the lower cover (1) is provided with a circular opening; the upper cover (3) is covered on the circular ring-shaped opening and is provided with a build-up welding hole (12) corresponding to the round steel hole (5).
2. A multi-charging manhole cover according to claim 1, wherein the round steel holes (5) comprise a near-center round steel hole (51) near the center of the lower cover (1) and a far-center round steel hole (52) on the outer edge of the lower cover (1); the near-center round steel hole (51) and the far-center round steel hole (52) are arranged around the center of the lower cover (1).
3. A multi-entry coalhole cover according to claim 2, wherein the upper cover (3) has a near center overlaying hole (12) and a far center overlaying hole (12) corresponding to the near center round steel hole (51) and the far center round steel hole (52), and the near center overlaying hole (12) and the far center overlaying hole (12) are connected through a casting rib plate (6).
4. The dual coalhole cover according to claim 1, wherein a bolt pre-buried hole (8) is provided at the center of the lower cover (1), and a mounting hole (9) corresponding to the bolt pre-buried hole (8) is provided at the center of the upper cover (3); the upper cover (3) and the lower cover (1) are fixed by inserting bolts (10) between the bolt pre-embedding holes (8) and the mounting holes (9); and the joint of the upper cover (3) and the lower cover (1) is subjected to surfacing welding according to the requirement.
5. A multi-pack coalhole cover according to claim 1, wherein the upper cover (3) and the lower cover (1) are each disc-shaped, the radius of the upper cover (3) being smaller than the radius of the lower cover (1).
6. The dual coaling hole cover according to any one of claims 1 to 5, wherein the upper cover (3) is partially overlapped with the lower cover (1), and the overlapping position of the upper cover and the lower cover is correspondingly provided with a clamping part.
7. The dual coalhole cover according to claim 6, wherein the clamping part comprises a tooth socket which is positioned on the upper cover (3) and is correspondingly arranged with the lower cover (1).
8. A multi-pack coal hole cover according to claim 1, wherein the upper cover (3) is provided with a spacing region corresponding to the cavity portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120311246.6U CN215049899U (en) | 2021-02-03 | 2021-02-03 | Compound coal charging hole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120311246.6U CN215049899U (en) | 2021-02-03 | 2021-02-03 | Compound coal charging hole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215049899U true CN215049899U (en) | 2021-12-07 |
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ID=79258767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120311246.6U Active CN215049899U (en) | 2021-02-03 | 2021-02-03 | Compound coal charging hole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215049899U (en) |
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2021
- 2021-02-03 CN CN202120311246.6U patent/CN215049899U/en active Active
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