CN211120697U - Flue gas temperature regulating device of dry smelting furnace - Google Patents
Flue gas temperature regulating device of dry smelting furnace Download PDFInfo
- Publication number
- CN211120697U CN211120697U CN201922044565.0U CN201922044565U CN211120697U CN 211120697 U CN211120697 U CN 211120697U CN 201922044565 U CN201922044565 U CN 201922044565U CN 211120697 U CN211120697 U CN 211120697U
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- Prior art keywords
- smelting furnace
- driving
- guide pipe
- flue gas
- smoke guide
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Links
- 238000003723 Smelting Methods 0.000 title claims abstract description 85
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000003546 flue gas Substances 0.000 title claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 25
- 239000000779 smoke Substances 0.000 claims abstract description 68
- 239000000498 cooling water Substances 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 229910052787 antimony Inorganic materials 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Abstract
The application provides a dry-type smelting furnace flue gas temperature regulating device, including smelting furnace smoke guide pipe, temperature sensor and regulating switch. An air inlet is arranged on a smoke guide pipe of the smelting furnace; connecting a temperature sensor with a smoke guide pipe of the smelting furnace; the adjusting quick switch is correspondingly arranged on the inner side of the air inlet, and the adjusting switch can move back and forth to open or close the air inlet; connecting a driving device with the adjusting switch, wherein the driving device drives the adjusting switch to move; and the temperature sensor is electrically connected with the driving device. The application has effectively solved the smelting furnace flue gas temperature cooling effect poor, and temperature control inaccuracy scheduling problem has effectively improved the productivity effect of enterprise.
Description
Technical Field
The application belongs to the technical field of dry-type smelting furnaces, and particularly relates to a flue gas temperature adjusting device of a dry-type smelting furnace.
Background
In the production process of antimony powder, after antimony raw materials are smelted by a dry smelting furnace, high-temperature flue gas is filtered by a dust removal cloth bag to extract the antimony powder. At present, the temperature of the flue gas before filtration is higher, and the flue gas needs to be cooled, so that the temperature of the flue gas is controlled below 150 ℃. However, in the prior art, the contact area between the smoke guide pipe of the smelting furnace and the smoke is increased to cool the smoke, so that the technical problems of poor cooling effect, inaccurate temperature control and the like exist.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present application adopts the following technical solutions: the dry-type smelting furnace flue gas temperature adjusting device for accurately adjusting and controlling the temperature of the smelting furnace flue gas comprises a smelting furnace smoke guide pipe, wherein an air inlet is formed in the smelting furnace smoke guide pipe; the temperature sensor is connected with the smoke guide pipe of the smelting furnace;
adjusting a switch: the adjusting quick switch is correspondingly arranged on the inner side of the air inlet, and the adjusting switch can move back and forth to open or close the air inlet;
a driving device: the driving device is connected with the adjusting switch and drives the adjusting switch to move; the temperature sensor is electrically connected with the driving device.
Further, the driving means includes a driving lever;
connecting piece: one end of the connecting piece is fixedly connected with the adjusting switch, the other end of the connecting piece is connected with the driving rod, and the driving rod drives the connecting piece to drive the adjusting switch to move;
a drive source: the driving source is connected with the driving rod, and the driving source provides power to drive the driving rod to move.
Further, the driving source comprises a driving motor, and a main transmission turbine connected with an output shaft of the driving motor;
the driving rod is a worm, one end of the worm is meshed with the main transmission turbine, the other end of the worm is rotatably connected through a bearing, and the connecting piece is connected with the worm through an internal thread.
Furthermore, the device also comprises a positioning guide block, wherein the positioning guide block is fixedly connected along the axial direction of the smelting furnace smoke guide pipe; the middle of the positioning guide block is provided with a sliding groove, and the connecting piece is in clearance fit with the sliding groove.
In one embodiment, the drive source includes a drive motor, a main drive wheel connected to an output shaft of the drive motor;
the driving rod is a connecting rod, one end of the connecting rod is connected with the main driving wheel through a rotating pair, and the other end of the connecting rod is connected with the connecting piece through a rotating pair.
Furthermore, the device also comprises a positioning guide block, wherein the positioning guide block is fixedly connected along the axial direction of the smelting furnace smoke guide pipe; the middle of the positioning guide block is provided with a sliding groove, and the connecting piece is in clearance fit with the sliding groove.
Furthermore, the regulating switch is a cylindrical shell, the air inlet is arranged along the circumference of the smoke guide pipe of the smelting furnace, and the cylindrical shell is in clearance fit with the inner wall of the smoke guide pipe of the smelting furnace.
Furthermore, the driving devices are multiple, and the multiple driving devices are uniformly distributed on the circumference and connected with the adjusting switch.
Furthermore, the outer sides of the smoke guide pipes of the smelting furnace on two sides of the air inlet are also provided with a cooling water jacket, and the driving device is connected with the outer wall of the cooling water jacket.
Further, the cooling water jacket comprises an outer wall of a smoke guide pipe of the smelting furnace and a cylindrical outer shell coaxially and hermetically connected with the smoke guide pipe of the smelting furnace; and cooling water is filled between the inner wall of the cylindrical outer shell and the outer wall of the smoke guide pipe of the smelting furnace.
The application provides a dry-type smelting furnace flue gas temperature adjusting device's beneficial effect lies in: compared with the prior art, the dry-type smelting furnace flue gas temperature regulating device is characterized in that the air inlet is formed in the smoke guide pipe of the smelting furnace, and the air inlet is provided with the regulating switch for controlling the opening or closing of the air inlet; and the driving device drives the regulating switch to move so as to realize the control of the opening, the closing and the opening amount of the air inlet. In the specific implementation, a temperature sensor is arranged and installed at an exhaust port of a smoke guide pipe of the smelting furnace to monitor the temperature of the smoke at the exhaust port of the smoke guide pipe of the smelting furnace; when the flue gas temperature of the exhaust port of the smoke guide pipe of the smelting furnace is larger than a preset value, the driving device drives the adjusting switch to move to open the air inlet, so that outside cold air can enter the smoke guide pipe of the smelting furnace to cool the flue gas, and the temperature of the flue gas is ensured to be within a preset range.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a first schematic front view provided in the embodiment of the present application;
FIG. 2 is a schematic top view, partially in section, of A-A of FIG. 1;
FIG. 3 is a schematic left side view of FIG. 1;
fig. 4 is a schematic front view of a second embodiment of the present disclosure;
fig. 5 is a top view of fig. 4, partially in section, B-B.
Wherein, in the figures, the respective reference numerals:
1-smelting furnace smoke guide pipe; 2-an air inlet; 3-adjusting a switch; 4-a drive device; 5, positioning a guide block; 6-a chute; 7-positioning the guide block; 8-a chute; 9-cooling water jacket; 10-a cylindrical outer shell; 41-a drive rod; 42-a connector; 43-a drive source; 44-a drive motor; 45-main drive turbine; 46-a drive motor; 47-main drive wheel.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, 2 and 3 together, the flue gas temperature adjusting device of the dry smelting furnace provided by the present application will now be described. The dry type smelting furnace flue gas temperature regulating device comprises a smelting furnace smoke guide pipe 1 and an air inlet 2 arranged on the smelting furnace smoke guide pipe 1; and a temperature sensor (not shown) connected with the exhaust port of the smoke guide pipe of the smelting furnace. And the adjusting switch 3 is correspondingly arranged on the inner side of the air inlet 2, and the adjusting switch 3 can move back and forth to open or close the air inlet 2. The driving device 4: the driving device 4 is connected with the adjusting switch 3, and the driving device 4 drives the adjusting switch 3 to move. And electrically connects the temperature sensor with the driving device 4.
According to the technical scheme, the temperature of the exhaust port of the smoke guide pipe 1 of the smelting furnace is collected through the temperature sensor, when the temperature of the smoke guide pipe is higher than 150 ℃, the temperature sensor feeds back the temperature information to the driving device 4, and the driving device 4 drives the regulating switch 3 to move to open the air inlet 2. Because the exhaust fan is installed to the dust removal sack that the exhaust port end of smelting furnace smoke guide pipe 1 is connected, therefore the airflow pressure of smelting furnace smoke guide pipe 1 is the negative pressure for external cold air, and external cold air will enter into smelting furnace smoke guide pipe 1 from air inlet 2 more easily after air inlet 2 is opened, and the high temperature flue gas in smelting furnace smoke guide pipe 1 will reduce for the flue gas temperature of smelting furnace smoke guide pipe 1 gas vent accords with and discharges the filterable requirement of dust removal sack. More specifically, the exhaust port of the smelting furnace smoke guide pipe 1 is effectively monitored through a temperature sensor, the monitored temperature value is fed back to the driving device 4 according to the temperature value monitored by the temperature sensor, the driving device 4 determines the amount of external cold air to be added according to the received temperature value, so that the high-temperature smoke in the smelting furnace smoke guide pipe 1 can be cooled to the temperature value according with the exhaust, the amplitude of the regulating switch 3 to be opened is determined according to the size of the air inlet 2, the driving device 4 drives the regulating switch 3 to move to open the air inlet 2, and the amplitude of the regulating switch 3 to be opened is determined.
In one embodiment, as shown in fig. 1, 2 and 3, the driving device 4 includes a driving rod 41, a connecting member 42, and a driving source 43; one end of the connecting piece 42 is fixedly connected with the adjusting switch 3, the other end of the connecting piece 42 is connected with the driving rod 41, and the driving rod 41 drives the connecting piece 42 to drive the adjusting switch 3 to move. The driving source 43 is connected to the driving rod 41, and the driving source 43 provides power to drive the driving rod 41 to move. The driving source 43 drives the driving rod 41 to move, the driving rod 41 drives the connecting piece 42 to move, so that the regulating switch 3 connected with the connecting piece 42 moves to open or close the air inlet 2, the monitored temperature is fed back to the driving device 4 according to the temperature of the exhaust port side of the smoke guide pipe 1 of the smelting furnace monitored by the temperature sensor, the driving device 4 calculates the travel of the driving rod 41 driving the connecting piece 42 to move according to the amount of cold air entering as required, and the control of the opening amplitude of the regulating switch 3 is realized.
In one embodiment, as shown in fig. 1, 2 and 3, the driving source 43 includes a driving motor 44, a main transmission turbine 45 connected to an output shaft of the driving motor 44; the driving rod 41 is a worm, one end of the worm is meshed with the main transmission worm wheel 45, the other end of the worm is rotatably connected through a bearing, and the connecting piece 42 is connected with the worm through an internal thread. In specific implementation, a main transmission turbine 45 is connected with an output shaft of a driving motor 44 in a transmission shell through a spline pair, one end of a worm is arranged in the transmission shell through a bearing, the worm is meshed and connected with the main transmission turbine, and the other end of the worm is connected with a bearing in a bearing seat arranged on the outer side of a smoke guide pipe 1 of a smelting furnace through a bearing; so that the main transmission worm wheel 45 is driven to rotate by the output shaft of the driving motor 44, and the meshing transmission of the main transmission worm wheel 45 drives the worm, so that the worm rotates under the support of the bearings at the two ends. Because the connecting piece 42 is connected with the worm through the thread, and the other end of the connecting piece 42 is fixedly connected with the adjusting switch 3, the connecting piece 42 moves in a translation manner under the driving of the worm to drive the adjusting switch 3 to move in a translation and reciprocating manner, so that the adjusting switch 3 can open or close the air inlet 2 and effectively control the opening amplitude of the air inlet 2, and appropriate cold air can enter to meet the temperature regulation control of high-temperature flue gas. The specific implementation of the method also comprises a controller, wherein the controller is respectively electrically connected with the driving motor 44 and the temperature sensor, the temperature sensor collects the temperature of the exhaust port of the smoke guide pipe 1 of the smelting furnace and feeds the collected temperature back to the controller, and the controller controls the rotation of the driving motor 44 to realize the accurate control of the opening of the inlet 2 and the opening amplitude.
In order to further improve the accuracy and reliability of control, as shown in fig. 1 and fig. 2 in the specific implementation, the smelting furnace smoke guide pipe further comprises a positioning guide block 5, and the positioning guide block 5 is fixedly connected along the axial direction of the smelting furnace smoke guide pipe 1; a sliding groove 6 is arranged in the middle of the positioning guide block 5, and the connecting piece 42 is in clearance fit with the sliding groove 6. In the specific implementation, the positioning guide block 5 is fixedly connected with the smoke guide pipes 1 of the smelting furnace on two sides of the air inlet 2, the length of the sliding groove 6 is determined according to the moving amplitude of the connecting piece 42, the connecting piece 42 stably moves in the sliding groove 6, the connecting piece 42 drives the regulating switch 3 to stably move when the air inlet 2 is opened, the connecting piece 42 cannot jump or shake, and the use stability and reliability of the equipment are further improved.
In one embodiment, as shown in fig. 4 and 5, the driving source 43 includes a driving motor 46, a main driving wheel 47 connected to an output shaft of the driving motor 46; the drive lever 41 is a link, one end of which is connected to the main drive wheel 47 via a revolute pair, and the other end of which is connected to the link 42 via a revolute pair. In this embodiment, the driving motor 46 is first fixedly connected to the outer side of the smoke guide tube 1 of the melting furnace, and the main driving wheel 47 is connected to the output shaft of the driving motor 46 through a spline pair. The controller is electrically connected with the driving motor 46 and the temperature sensor respectively. When the temperature sensor monitors that the temperature of the exhaust port of the smoke guide pipe 1 of the smelting furnace is overhigh, the monitored temperature is fed back to the controller, the controller electrically controls the rotation of the driving motor 46, the driving motor 46 drives the main driving wheel 47 to rotate, the main driving wheel 47 drives the connecting rod to drive the connecting piece 42 to move, the connecting piece 42 drives the adjusting switch 3 to move, and the opening, the closing and the opening amplitude of the air inlet 2 are controlled.
In order to further improve the reliability and stability of operation, the smelting furnace smoke guide pipe structure further comprises a positioning guide block 7 in the specific implementation, and the positioning guide block 7 is fixedly connected along the axial direction of the smelting furnace smoke guide pipe 1; the middle of the positioning guide block 7 is provided with a sliding groove 8, and the connecting piece 42 is in clearance fit with the sliding groove. In the specific implementation, the positioning guide block 7 is fixedly connected with the smoke guide pipes 1 of the smelting furnace on two sides of the air inlet 2, the length of the sliding groove 8 is determined according to the moving amplitude of the connecting piece 42, the connecting piece 42 stably moves in the sliding groove 8, the connecting piece 42 drives the regulating switch 3 to stably move when the air inlet 2 is opened, the connecting piece 42 cannot jump or shake, and the use stability and reliability of the equipment are further improved.
In order to increase the amount of cold air introduced, as shown in fig. 1 and 2, or fig. 4 and 5, the adjusting switch 3 is provided as a cylindrical housing, and the air inlet 2 is provided along the circumference of the smoke guide tube 1 of the smelting furnace, and the cylindrical housing is in clearance fit with the inner wall of the smoke guide tube 1 of the smelting furnace. Namely, the air inlet 2 cuts off the smoke guide tube 1 of the smelting furnace, and the smoke guide tube 1 of the smelting furnace on both sides of the air inlet 2 is connected through the regulating switch 3 of the cylindrical shell. In order to further increase the accuracy, stability and reliability of the control switch 3, a plurality of drive devices 4 are distributed uniformly over the circumference of the control switch 3. The driving source 43 of the driving device 4 includes, but is not limited to, a driving motor, a main transmission turbine, a main driving wheel, etc., and the driving rod includes, but is not limited to, a worm, a connecting rod, etc.
In order to further prolong the service life of the equipment and reduce the influence of the high temperature of the smelting furnace smoke guide pipe 1 on the service life of the temperature regulating device, as shown in attached drawings 1 and 2 or attached drawings 4 and 5, in a certain embodiment, the outer sides of the smelting furnace smoke guide pipe 1 on both sides of the air inlet 2 are respectively provided with a cooling water jacket 9, and the driving device 4 is connected with the outer wall of the cooling water jacket 9. In the embodiment, the driving motors 44 and 46 of the driving device 4 and the driving rod 41 are respectively connected with the outer wall of the cooling water jacket 9, and the positioning guide blocks 5 and 7 are also respectively connected with the outer wall of the cooling water jacket 9.
In order to reduce the cost and improve the cooling effect, in particular, the cooling water jacket 9 comprises the outer wall of the smelting furnace smoke guide pipe 1 and a cylindrical outer shell 10 coaxially and hermetically connected with the smelting furnace smoke guide pipe 1; cooling water is filled between the inner wall of the cylindrical outer shell 10 and the outer wall of the smoke guide pipe 1 of the smelting furnace, the temperature of the cylindrical outer shell 10 is effectively reduced through circulation of the cooling water, and the driving motors 44 and 46 and the positioning guide blocks 5 and 7 are effectively ensured; the temperature of the driving rod 41 and the connecting piece 42 effectively ensures the service life of the equipment.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The dry type smelting furnace flue gas temperature regulating device comprises a smelting furnace smoke guide pipe, wherein an air inlet is formed in the smelting furnace smoke guide pipe; the temperature sensor is connected with the smoke guide pipe of the smelting furnace;
adjusting a switch: the adjusting quick switch is correspondingly arranged on the inner side of the air inlet, and the adjusting switch can move back and forth to open or close the air inlet;
a driving device: the driving device is connected with the adjusting switch and drives the adjusting switch to move; the temperature sensor is electrically connected with the driving device.
2. The dry smelting furnace flue gas temperature regulating apparatus as recited in claim 1, wherein: the driving device comprises a driving rod;
connecting piece: one end of the connecting piece is fixedly connected with the adjusting switch, the other end of the connecting piece is connected with the driving rod, and the driving rod drives the connecting piece to drive the adjusting switch to move;
a drive source: the driving source is connected with the driving rod, and the driving source provides power to drive the driving rod to move.
3. The flue gas temperature adjusting apparatus of a dry type smelting furnace according to claim 2, characterized in that: the driving source comprises a driving motor and a main transmission turbine connected with an output shaft of the driving motor;
the driving rod is a worm, one end of the worm is meshed with the main transmission turbine, the other end of the worm is rotatably connected through a bearing, and the connecting piece is connected with the worm through an internal thread.
4. The flue gas temperature adjusting apparatus of a dry type smelting furnace according to claim 3, characterized in that: the device also comprises a positioning guide block, wherein the positioning guide block is fixedly connected along the axial direction of the smoke guide pipe of the smelting furnace; the middle of the positioning guide block is provided with a sliding groove, and the connecting piece is in clearance fit with the sliding groove.
5. The flue gas temperature adjusting apparatus of a dry type smelting furnace according to claim 2, characterized in that: the driving source comprises a driving motor and a main driving wheel connected with an output shaft of the driving motor;
the driving rod is a connecting rod, one end of the connecting rod is connected with the main driving wheel through a rotating pair, and the other end of the connecting rod is connected with the connecting piece through a rotating pair.
6. The dry smelting furnace flue gas temperature regulating apparatus as recited in claim 5, wherein: the device also comprises a positioning guide block, wherein the positioning guide block is fixedly connected along the axial direction of the smoke guide pipe of the smelting furnace; the middle of the positioning guide block is provided with a sliding groove, and the connecting piece is in clearance fit with the sliding groove.
7. The dry smelting furnace flue gas temperature regulating apparatus as recited in claim 1, wherein: the regulating switch is a cylindrical shell, the air inlets are arranged along the circumference of the smelting furnace smoke guide pipe, and the cylindrical shell is in clearance fit with the inner wall of the smelting furnace smoke guide pipe.
8. The flue gas temperature adjusting apparatus of a dry type smelting furnace according to claim 7, characterized in that: the driving devices are multiple, and the driving devices are uniformly distributed on the circumference and connected with the adjusting switch.
9. The flue gas temperature adjusting device for the dry type smelting furnace according to any one of claims 1 to 8, characterized in that: and the outer sides of the smoke guide pipes of the smelting furnace on the two sides of the air inlet are respectively provided with a cooling water jacket, and the driving device is connected with the outer wall of the cooling water jacket.
10. The dry smelting furnace flue gas temperature regulating apparatus as recited in claim 9, wherein: the cooling water jacket comprises the outer wall of a smoke guide pipe of the smelting furnace and a cylindrical outer shell which is coaxially and hermetically connected with the smoke guide pipe of the smelting furnace; and cooling water is filled between the inner wall of the cylindrical outer shell and the outer wall of the smoke guide pipe of the smelting furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922044565.0U CN211120697U (en) | 2019-11-22 | 2019-11-22 | Flue gas temperature regulating device of dry smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922044565.0U CN211120697U (en) | 2019-11-22 | 2019-11-22 | Flue gas temperature regulating device of dry smelting furnace |
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| Publication Number | Publication Date |
|---|---|
| CN211120697U true CN211120697U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922044565.0U Expired - Fee Related CN211120697U (en) | 2019-11-22 | 2019-11-22 | Flue gas temperature regulating device of dry smelting furnace |
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| CN (1) | CN211120697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849161A (en) * | 2019-11-22 | 2020-02-28 | 湖南辰州矿业有限责任公司 | Flue gas temperature regulating device of dry smelting furnace |
-
2019
- 2019-11-22 CN CN201922044565.0U patent/CN211120697U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849161A (en) * | 2019-11-22 | 2020-02-28 | 湖南辰州矿业有限责任公司 | Flue gas temperature regulating device of dry smelting furnace |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200727 Address after: 419607, Hunan, Huaihua province Yuanling County town of Wo Wo Village Patentee after: HUAIHUA CHENZHOU MACHINERY Co.,Ltd. Address before: 419600 Woxi village, Guanzhuang Town, Yuanling County, Huaihua City, Hunan Province Patentee before: HUNAN CHENZHOU MINING INDUSTRY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200728 |