CN110668714B - Material guide device of gas-material sharing reversing valve for double-chamber shaft kiln - Google Patents
Material guide device of gas-material sharing reversing valve for double-chamber shaft kiln Download PDFInfo
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- CN110668714B CN110668714B CN201910974974.2A CN201910974974A CN110668714B CN 110668714 B CN110668714 B CN 110668714B CN 201910974974 A CN201910974974 A CN 201910974974A CN 110668714 B CN110668714 B CN 110668714B
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- plate
- gas
- reversing valve
- side plates
- vertical channel
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- 239000000463 material Substances 0.000 title claims abstract description 98
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 5
- 239000002912 waste gas Substances 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000011094 fiberboard Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/12—Preheating, burning calcining or cooling in shaft or vertical furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Tunnel Furnaces (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a material guiding device of a gas-material shared reversing valve for a double-hearth shaft kiln, which comprises a material guiding groove, a material baffle plate, a high-temperature resistant fiber backing plate and a wear-resistant steel lining plate; the guide chute is arranged in the gas-material common reversing valve and consists of a chute body structure and a vertical channel structure which are communicated with each other; wherein the groove body structure is close to one end of the feed inlet of the gas-material common reversing valve, and the vertical channel structure is positioned in the middle of the discharge outlet of the gas-material common reversing valve; the vertical channel structure is provided with a baffle plate at one end facing the material flowing direction, and the inner side of the baffle plate is sequentially provided with a high-temperature resistant fiber backing plate and a wear-resistant steel lining plate. The material guiding device is used for changing the material flow direction and controlling the material flow cross-sectional area so as to achieve the purpose of reasonably distributing materials by matching with a lower material distributing device.
Description
Technical Field
The invention relates to a material guiding device, in particular to a material guiding device of a gas-material sharing reversing valve for a double-hearth shaft kiln.
Background
The double-hearth shaft kiln is one kind of important heat engineering kiln and is used mainly in calcining lime and dolomite. The kiln type has the outstanding advantages that the heat consumption is lower than that of other kiln types, and the production mode is that two kiln bores are communicated with each other and are heated alternately. When the working kiln chamber is heated, a large amount of generated hot flue gas flows into the preheating kiln chamber through the connecting channel to preheat materials in the preheating kiln chamber, and the preheating kiln chamber is alternately repeated, so that the purpose of waste gas waste heat utilization is achieved, and the use efficiency of fuel is improved.
As shown in fig. 1, the gas-material shared reversing valve for the double-chamber shaft kiln comprises a valve body 5, a two-way valve mechanism 6 and a one-way valve mechanism 7; an exhaust gas outlet 51 is formed in one side of the top of the valve body 5 and is connected with an external exhaust gas pipeline, and a combustion air inlet 52 is formed in the side wall of the valve body 5 close to the exhaust gas outlet 51 and is connected with the external combustion air pipeline; an inclined feed inlet 53 is arranged on one side of the valve body 5 opposite to the combustion air inlet 52 and is connected with a top stock bin, and a discharge outlet 54 is arranged at the bottom of the valve body 5 and is connected with a kiln mouth; the two-way valve mechanism 6 is arranged on one side close to the waste gas outlet 51 and the combustion air inlet 52, a two-way valve plate in the two-way valve mechanism 6 is positioned in the valve body 5, the two-way valve plate is driven by the two-way valve driving device to switch between 2 working positions, the two-way valve plate can seal and seal the waste gas outlet 51 in one working position and seal the combustion air inlet 52 in the other working position; the check valve mechanism 7 is installed in the side that is close to feed inlet 53, and the check valve plate in the check valve mechanism is located inside valve body 5, and the check valve plate is driven by check valve drive arrangement and is shifted between 2 working positions, and the check valve plate can seal the feed inlet 53 when one of them working position.
The feeding port in the gas-material sharing reversing valve can complete discharging and airflow reversing of the double-hearth kiln, compared with the existing ventilation mode, the method has the advantages that holes are not required to be formed in the refractory material at the upper part of the kiln, so that the masonry complexity of the refractory material is reduced, the stress state of the refractory material at the position is optimized, the service life of the refractory material is prolonged, and the productivity of the double-hearth shaft kiln is improved.
Because of the special structure of the gas-material common reversing valve, problems are brought in production: firstly, a lateral feeding mode is adopted to generate lateral component speed, so that cloth is affected. The discharge port needs to be in butt joint with the kiln mouth and is necessarily arranged at the bottom of the valve body. The two-way valve plate in the two-way valve mechanism required for reversing the air flow is switched in rotation, so that the waste gas outlet and the combustion air inlet must be arranged adjacently, and one on the side and one on the top, so that the feed inlet can only take the form of a lateral opening. The lateral feeding can lead the kiln feeding material to have lateral sub-speed, and the sub-speed can lead the kiln feeding material to be unevenly distributed, thereby improving the overburning and the firing rate. Secondly, the material is required to pass through the discharge port of the gas-material common reversing valve, and combustion air or waste gas is required to pass through the discharge port. In order to prevent the airflow speed from generating large fluctuation, the area of the discharge hole is far larger than the area of the blanking section required by the lower distributing device. If the material is discharged according to the whole area of the discharge hole, the material distribution device does not work.
Disclosure of Invention
The invention provides a material guiding device of a gas-material sharing reversing valve for a double-hearth shaft kiln, which is arranged in the gas-material sharing reversing valve and is used for changing the material flow direction and controlling the material flow cross-sectional area so as to realize the purpose of reasonably distributing materials by matching with a lower material distributing device.
In order to achieve the above purpose, the invention is realized by adopting the following technical scheme:
a material guiding device of a gas-material shared reversing valve for a double-hearth shaft kiln comprises a material guiding groove, a material baffle plate, a high-temperature resistant fiber backing plate and a wear-resistant steel backing plate; the guide chute is arranged in the gas-material common reversing valve and consists of a chute body structure and a vertical channel structure which are communicated with each other; wherein the groove body structure is close to one end of the feed inlet of the gas-material common reversing valve, and the vertical channel structure is positioned in the middle of the discharge outlet of the gas-material common reversing valve; the vertical channel structure is provided with a baffle plate at one end facing the material flowing direction, and the inner side of the baffle plate is sequentially provided with a high-temperature resistant fiber backing plate and a wear-resistant steel lining plate.
The guide chute consists of a bottom plate, side plates and a fixed seat, wherein the bottom plate is obliquely arranged, and one end close to the feed inlet is higher than one end close to the discharge outlet; a fixed seat is arranged at the bottom of the bottom plate and fixedly connected with the side wall of the valve body at the corresponding side of the gas-material common reversing valve through bolts; side plates are respectively arranged on two sides of the bottom plate, the side plates are arranged in parallel with the material flow direction, the upper parts of the side plates are fixedly connected with the bottom plates on the corresponding sides, and the lower parts of the side plates extend downwards to form a vertical channel structure.
The groove body structure is in a horn mouth shape, the opening width close to one end of the feeding hole is larger than the opening width close to one end of the discharging hole, and the side plates are fixed at the edges of the two sides of the bottom plate.
The side plates are parallel to each other in the extension section, and a row of horizontally arranged mounting bolt holes are respectively formed in the upper part and the lower part of the side plates of the extension section and are used for fixing the striker plate through the mounting bolts, and the horizontal position of the striker plate can be adjusted.
The upper part and the lower part of the vertical plate are respectively provided with bolt holes at positions corresponding to the bolt holes arranged on the side plates, wherein the bolt holes at the upper part or the lower part are oblong holes, and the long axis of the oblong holes is in the vertical direction.
The high-temperature resistant fiber backing plate and the wear-resistant steel lining plate are fixedly connected with the striker plate through bolts.
Compared with the prior art, the invention has the beneficial effects that:
1) The material guiding device is used for changing the material flow direction, controlling the material flow cross section area and reasonably distributing materials by matching with the lower material distributing device, so that the gas-material sharing reversing valve can be effectively applied to the double-hearth shaft kiln;
2) The material guide device has a simple and compact structure and is convenient to install and overhaul; the material baffle is provided with a wear-resistant lining plate, so that the replacement time can be prolonged;
3) By adopting the material guide device, the long-term, stable and continuous operation of the gas-material common reversing valve can be ensured.
Drawings
Fig. 1 is a schematic structural view of a gas-material sharing reversing valve and a material guiding device for a double-chamber shaft kiln.
Fig. 2 is a schematic structural view of the material guiding device according to the present invention.
Fig. 3 is a front view of a guide chute according to the present invention.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a left side view of fig. 3.
Fig. 6 is a front view of the dam of the present invention.
Fig. 7 is a right side view of fig. 6.
In the figure: 1. guide chute 11, side plate 12, bottom plate 13, fixed seat 14, mounting bolt hole 2, baffle plate 21, vertical plate 22, slotted hole 3, wear-resistant steel lining plate 4, high-temperature resistant fiber backing plate 5, valve body 51 of gas-material sharing reversing valve, exhaust gas outlet 52, combustion air inlet 53, feed inlet 54, discharge outlet 6, double-valve plate mechanism 7, single-valve plate mechanism
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
as shown in figure 2, the material guiding device of the gas-material sharing reversing valve for the double-hearth shaft kiln comprises a material guiding groove 1, a material baffle plate 2, a high-temperature resistant fiber backing plate 4 and a wear-resistant steel lining plate 3; the guide chute 1 is arranged in a gas-material common reversing valve and consists of a chute body structure and a vertical channel structure which are communicated with each other; wherein the groove body structure is close to one end of a feed inlet 53 of the gas-material common reversing valve, and the vertical channel structure is positioned in the middle of a discharge outlet 54 of the gas-material common reversing valve; the vertical channel structure is provided with a striker plate 2 at one end facing the material flowing direction, and the inner side of the striker plate 2 is sequentially provided with a high-temperature resistant fiber backing plate 4 and a wear-resistant steel lining plate 3.
As shown in fig. 3-5, the guide chute 1 is composed of a bottom plate 12, a side plate 11 and a fixed seat 13, wherein the bottom plate 12 is obliquely arranged, and one end close to the feed inlet 53 is higher than one end close to the discharge outlet 54; a fixed seat 13 is arranged at the bottom of the bottom plate 12 and is fixedly connected with the side wall of the valve body 5 at the corresponding side of the gas-material common reversing valve through bolts; side plates 11 are respectively arranged on two sides of the bottom plate 12, the side plates 11 are arranged in parallel with the material flow direction, the upper parts of the side plates 11 are fixedly connected with the bottom plates 12 on the corresponding sides, and the lower parts of the side plates 11 extend downwards to form a vertical channel structure.
The groove body structure has a horn mouth shape, the opening width near one end of the feeding hole 53 is larger than the opening width near one end of the discharging hole 54, and the side plates 11 are fixed at the edges of the two sides of the bottom plate 12.
The side plates 11 are parallel to each other in the extension section, and the upper part and the lower part of the side plates 11 of the extension section are respectively provided with a row of horizontally arranged mounting bolt holes 14 for fixing the striker plate 2 through the mounting bolts and enabling the horizontal position of the striker plate 2 to be adjusted.
As shown in fig. 6-7, the two sides of the striker plate 2 are provided with plates 21, the upper part and the lower part of the vertical plate 21 are respectively provided with bolt holes at positions corresponding to the bolt holes 14 installed on the side plate 11, wherein the bolt holes at the upper part or the lower part are oblong holes 22, and the long axis of the oblong holes 22 is in the vertical direction.
The high-temperature resistant fiber backing plate 4 and the wear-resistant steel lining plate 3 are fixedly connected with the striker plate 2 through bolts.
The guide chute 1 is a welding piece and is formed by welding a bottom plate 12 and 2 side plates 11. The bottom plate 12 has a trapezoid shape with a wider upper part and a narrower lower part. The side plates 11 are arranged along the sloping sides of the two sides of the bottom plate 12 to form a horn mouth closing-in structure from top to bottom. The back of the bottom plate 12 is welded with a fixed seat 13, the fixed seat 13 is provided with holes, and the fixed seat is fixed with the valve body 5 of the gas material sharing reversing valve through bolts. The side plate 11 is provided with 2 rows of mounting bolt holes 14 for mounting the striker plate 2. The inner side of the striker plate 2 is fixed with a high temperature resistant fiber plate 4 and a wear resistant steel lining plate 3 through bolts.
When the device is used, materials enter the valve body 5 through the feed inlet 53 of the gas-material common reversing valve and are conveyed along a material channel formed by the groove body structure, so that the purpose of downward narrowing is achieved. After the inclined downward material flow is blocked by the wear-resistant steel lining plate 3, the material flow direction is changed into vertical downward, and the material flow falls into the kiln from the vertical channel structure, so that reasonable material distribution is performed by being matched with a lower material distribution device better.
The striker plate 2 can be matched with the mounting bolt holes 14 at different positions to realize horizontal position movement adjustment, so that the size of the blanking section is adjusted to adapt to different requirements of the distributing device on the width of the material flow.
The falling material may impact and wear the wear-resistant steel lining plate 3 and may generate noise. In order to solve the two problems, a high-temperature resistant fiberboard 4 is arranged between the striker plate 2 and the wear-resistant steel lining plate 3, and the wear-resistant steel lining plate 3 is singly replaced after being worn, so that the overhaul is convenient. The high temperature resistant fiber board 4 has a buffering function, and can effectively reduce noise generated by material impact.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. The material guiding device of the gas-material shared reversing valve for the double-hearth shaft kiln is characterized by comprising a material guiding groove, a material baffle plate, a high-temperature resistant fiber backing plate and a wear-resistant steel backing plate; the guide chute is arranged in the gas-material common reversing valve and consists of a chute body structure and a vertical channel structure which are communicated with each other; wherein the groove body structure is close to one end of the feed inlet of the gas-material common reversing valve, and the vertical channel structure is positioned in the middle of the discharge outlet of the gas-material common reversing valve; the groove body structure is in a horn mouth shape, the width of an opening close to one end of the feeding hole is larger than that of an opening close to one end of the discharging hole, and the side plates are fixed at the edges of the two sides of the bottom plate; the vertical channel structure is provided with a baffle plate at one end facing the material flowing direction, and the inner side of the baffle plate is sequentially provided with a high-temperature resistant fiber base plate and a wear-resistant steel lining plate;
the guide chute consists of a bottom plate, side plates and a fixed seat, wherein the bottom plate is obliquely arranged, and one end close to the feed inlet is higher than one end close to the discharge outlet; a fixed seat is arranged at the bottom of the bottom plate and fixedly connected with the side wall of the valve body at the corresponding side of the gas-material common reversing valve through bolts; the two sides of the bottom plate are respectively provided with a side plate, the side plates are arranged in parallel with the material flow direction, the upper parts of the side plates are fixedly connected with the bottom plates at the corresponding sides, and the lower parts of the side plates extend downwards to form a vertical channel structure; the side plates are parallel to each other in the extension section, and a row of horizontally arranged mounting bolt holes are respectively formed in the upper part and the lower part of the side plates of the extension section and are used for fixing the striker plate through the mounting bolts, and the horizontal position of the striker plate can be adjusted.
2. The material guiding device of the gas-material sharing reversing valve for the double-bore shaft kiln according to claim 1, wherein plates are arranged on two sides of the material baffle plate, bolt holes are respectively formed in the upper part and the lower part of the vertical plate at positions corresponding to the bolt holes formed in the side plate, the bolt holes in the upper part or the lower part are oblong holes, and the long axis of the oblong holes is in the vertical direction.
3. The material guiding device of the gas-material shared reversing valve for the double-hearth shaft kiln, which is disclosed in claim 1, is characterized in that the high-temperature resistant fiber backing plate and the wear-resistant steel backing plate are fixedly connected with the baffle plate through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974974.2A CN110668714B (en) | 2019-10-14 | 2019-10-14 | Material guide device of gas-material sharing reversing valve for double-chamber shaft kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910974974.2A CN110668714B (en) | 2019-10-14 | 2019-10-14 | Material guide device of gas-material sharing reversing valve for double-chamber shaft kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110668714A CN110668714A (en) | 2020-01-10 |
| CN110668714B true CN110668714B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910974974.2A Active CN110668714B (en) | 2019-10-14 | 2019-10-14 | Material guide device of gas-material sharing reversing valve for double-chamber shaft kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110668714B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204847321U (en) * | 2015-08-05 | 2015-12-09 | 攀钢集团矿业有限公司 | Blanking guide device and mineral aggregate sticky tape transportation movement system |
| CN205998609U (en) * | 2016-08-31 | 2017-03-08 | 中国神华能源股份有限公司 | Charging conduit, funnel and guide system |
| CN206974189U (en) * | 2017-07-13 | 2018-02-06 | 辽宁科技大学 | A kind of long-life tail gathering sill of sintering machine |
| CN210855847U (en) * | 2019-10-14 | 2020-06-26 | 中冶焦耐(大连)工程技术有限公司 | Material guide device of gas-material shared reversing valve for double-chamber shaft kiln |
-
2019
- 2019-10-14 CN CN201910974974.2A patent/CN110668714B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204847321U (en) * | 2015-08-05 | 2015-12-09 | 攀钢集团矿业有限公司 | Blanking guide device and mineral aggregate sticky tape transportation movement system |
| CN205998609U (en) * | 2016-08-31 | 2017-03-08 | 中国神华能源股份有限公司 | Charging conduit, funnel and guide system |
| CN206974189U (en) * | 2017-07-13 | 2018-02-06 | 辽宁科技大学 | A kind of long-life tail gathering sill of sintering machine |
| CN210855847U (en) * | 2019-10-14 | 2020-06-26 | 中冶焦耐(大连)工程技术有限公司 | Material guide device of gas-material shared reversing valve for double-chamber shaft kiln |
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| Publication number | Publication date |
|---|---|
| CN110668714A (en) | 2020-01-10 |
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