CN209532103U - Duplex tube helix push type reduction furnace - Google Patents
Duplex tube helix push type reduction furnace Download PDFInfo
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- CN209532103U CN209532103U CN201920122384.2U CN201920122384U CN209532103U CN 209532103 U CN209532103 U CN 209532103U CN 201920122384 U CN201920122384 U CN 201920122384U CN 209532103 U CN209532103 U CN 209532103U
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- 230000009467 reduction Effects 0.000 title claims abstract description 129
- 239000000463 material Substances 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims description 24
- 239000012212 insulator Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000843 powder Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 2
- 238000006722 reduction reaction Methods 0.000 description 80
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000005439 thermosphere Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
Duplex tube helix push type reduction furnace, including it is tapered enter batch can, first reduction tube, second reduction tube and lower storage tank, first reduction tube and the axially tangent placement of the second reduction tube, feeding inlet is provided with above the first reduction tube head end, it is described enter batch can be placed in the feeding inlet above the first reduction tube, the first material hole is provided with below the first reduction pipe end, the second material hole is provided with above the second reduction pipe end, first material hole is communicated with the second material hole by sealed connecting component, discharge port is provided with below the second reduction tube head end, the discharge port is communicated with lower storage tank, the discharge port is connected with lower storage tank junction with air feed equipment, the air feed equipment provides H2And N2Mixed gas, providing one kind can be produced with small lot, and duplex tube helix push type reduction furnace small in size, high-efficient meets the production requirement of micro metal powder production producer.
Description
Technical field
The present invention relates to alloy powder metallurgy field, especially a kind of duplex tube helix push type reduction furnace.
Background technique
Currently, steel belt type reducing furnace is the traditional equipment for purifying alloy powder.Its working principle is that: alloyed powder passes through feed bin
The distribution device of mouth, evenly laid out to enter in reduction furnace on the steel band slowly moved with steel band, alloyed powder is in sufficient reduction
Property atmosphere and technological temperature appropriate under, be gradually completing reduction reaction, using cooling device it is cooling after come out of the stove.Equipment is by heating
The compositions such as furnace body, reduction furnace body, feed device, reducing atmosphere metering, control device, temperature control, electric-control system.Steel band type is also
Former furnace is suitble to produce in enormous quantities, and steel belt furnace has investment larger, and occupied area is larger, and energy consumption is higher, and product transformation waits spies slowly
Point.Which also limits small mount, multi items productions.
Summary of the invention
It is an object of the invention to solve the deficiencies in the prior art, a kind of duplex tube helix push type reduction furnace is provided.
In order to achieve the above object, the following technical schemes are provided:
Duplex tube helix push type reduction furnace, including it is tapered enter batch can, the first reduction tube, the second reduction tube and lower storage tank,
First reduction tube and the axially tangent placement of the second reduction tube, the first reduction tube head end top is provided with feeding inlet, described
Enter batch can be placed in the feeding inlet above the first reduction tube, is provided with the first material hole below the first reduction pipe end, it is described
It is provided with the second material hole above second reduction pipe end, first material hole passes through sealed connecting component phase with the second material hole
It is logical, it is provided with discharge port below the second reduction tube head end, the discharge port is communicated with lower storage tank, the discharge port and lower storage
Batch can junction is connected with air feed equipment, and the air feed equipment provides H2And N2Mixed gas, first reduction tube and second
Reduction tube is isolated close to the side for entering batch can using low temperature thermal insulation layer, is isolated far from the side for entering batch can using high temperature insulating layer,
First reduction tube and the second reduction tube surrounding wrap up thermal insulator, and the low temperature thermal insulation layer and high temperature insulating are placed on thermal insulator
Inside, first reduction tube and the second reduction tube both ends are fixed by bearing with end cover mechanism, the high temperature insulating layer isolation
The upper layer heating tube and lower layer's heating tube that the first reduction tube and the second reduction tube of high-temperature region are distributed with, first reduction tube and
Second reduction tube axial direction is disposed with thermocouple, and the lower storage tank carries out material by the water cooling tube of Spiral distribution cold
But, it is enclosed with outer layer backplate on the outside of the thermal insulator, the outer side guard plate in the upper layer heating tube and lower layer's heating tube region is removable
It unloads.
Preferably, first reduction tube and the second reduction tube structure are identical, including outer cylinder, hollow shaft, screw blade with
And the support bar group for fixing screw blade and hollow shaft, one group of support bar group is distributed in each screw pitch of screw blade,
The screw blade of the screw blade and the second reduction tube of first reduction tube is oppositely oriented, and the support bar group includes first
Strut, second support bar and third support rod and nut, the first support bar, second support bar and third support construction phase
Together, the top of the first support bar cooperates with screw thread and nut, and the first support bar is variable diameter bar, close to the one of screw thread
End is reduced diameter section, and reduced diameter section connects enlarged diameter section, and through-hole is provided in the hollow shaft, and the first support bar passes through hollow
Through-hole and enlarged diameter section end on axis are welded on screw blade, the second support bar and third support rod arrangement with
First support bar is identical, and first support bar, second support bar and third support rod are in 120 degree two-by-two, the first support bar,
Second support bar and third support rod enlarged diameter section head end and hollow shaft are tangent.
Preferably, the bearing with end cover mechanism includes drive end bearing bracket bearing group and bearing of rear end cover group, is respectively placed in first also
The both ends of original pipe and the second reduction tube, the drive end bearing bracket bearing group are fixed in connecting shaft, and the connecting shaft passes through with hollow shaft
Spatially the first pin of right-angled intersection is fixedly connected with the second pin, and the connecting shaft other end is connect with sprocket wheel.
It preferably, further include pedestal, support and support platform, the support platform is fixed on the base, and is used to support
Drive end bearing bracket bearing group, the support, which is fixed on the base, is used to support the second reduction tube, and the pedestal is fixed on bottom surface, for branch
Support thermal insulator.
Preferably, it is described enter batch can include the first taper angle and the second taper angle, first taper angle and the second taper
Not in the same plane, second taper angle is close to the first reduction tube, and the first taper angle is far from the first reduction tube at angle.
Preferably, the upper layer heating tube quantity be less than lower layer's heating tube quantity, the upper layer heating tube quantity be greater than etc.
In zero.
Preferably, second reduction pipe outer wall two sides are welded with limited block, and the section of the limited block includes first long
Side, the second short side, the first circular arc and the second circular arc, the first circular arc and the second circular arc radian are identical, first circular arc and second
Between the first long side and the second short side, first circular arc and the second reduction tube weld circular arc, the first reduction tube limit
In the second circular arc.
The invention has the benefit that
1, providing one kind can be produced with small lot, small in size, and high-efficient duplex tube helix push type reduction furnace meets small-sized
The production requirement of metal powder manufacturer.
2, it reversely rotates while cooperating with the mixed gas of the reversed transport of H 2 of material and N2 by using double helix and realize
Better reduction process guarantees the quality of product, improves reduction efficiency.
3, by the way that one group of support bar group, Lai Shixian screw blade and hollow shaft are distributed in each screw pitch of screw blade
Fixation, to realize that material is preferably transmitted and stirred.
4, increase low temperature thermal insulation layer, high temperature insulating layer and upper and lower level heating tube and quickly heat up to material to realize, guarantee also
The temperature of former process.
Detailed description of the invention
Fig. 1 is duplex tube helix push type reduction furnace overall structure diagram；
Fig. 2 is Section A-A figure；
Fig. 3 is the first reduction tube end view drawing；
Fig. 4 is connecting axle structure schematic diagram；
Fig. 5 is limited block working state schematic representation；
Fig. 6 is limited block sectional view.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
Middle attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is real
The component for applying example can be arranged and be designed with a variety of different configurations.Therefore, of the invention to what is provided in the accompanying drawings below
The detailed description of embodiment is not intended to limit the range of claimed invention, but is merely representative of selected reality of the invention
Apply example.Based on the embodiment of the present invention, those skilled in the art institute obtained without making creative work
There are other embodiments, shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In addition, in the description of the present invention unless specifically defined or limited otherwise, term " installation ", " connects " connected "
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, two members can also be can be indirectly connected through an intermediary
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
Duplex tube helix push type reduction furnace as depicted in figs. 1 and 2 include it is tapered enter batch can 1, the first reduction tube 11, second
Reduction tube 13 and lower storage tank 6, first reduction tube 11 and the axial tangent placement of the second reduction tube 13, first reduction tube
Be provided with feeding inlet above 11 head ends, it is described enter batch can 1 be placed in the feeding inlet of 11 top of the first reduction tube, first reduction tube
It is provided with the first material hole below 11 ends, the second material hole, the described first logical material are provided with above 13 end of the second reduction tube
Mouthful communicated with the second material hole by sealed connecting component 10, be provided with discharge port below 13 head end of the second reduction tube, it is described out
Material mouth is communicated with lower storage tank 6, and the discharge port is connected with lower 6 junction of storage tank with air feed equipment B, the air feed equipment B
H is provided2And N2Mixed gas, first reduction tube 11 and the second reduction tube 13 close to enter the side of batch can 1 using low temperature every
Thermosphere 8 is isolated, and is isolated far from the side for entering batch can 1 using high temperature insulating layer 18, first reduction tube 11 and the second reduction tube
12 surroundings wrap up thermal insulator 7, and the low temperature thermal insulation layer 8 and high temperature insulating layer 18 are placed in 7 inside of thermal insulator, first reduction tube
11 and 13 both ends of the second reduction tube fixed by bearing with end cover mechanism, the first of the high-temperature region that the high temperature insulating layer 18 is isolated is also
The upper layer heating tube 9 and lower layer's heating tube 16 that former pipe 11 and the second reduction tube 13 are distributed with, first reduction tube 11 and second
13 axial direction of reduction tube is disposed with thermocouple 19, and the lower storage tank 6 carries out material by the water cooling tube of Spiral distribution cold
But, outer layer backplate 32, the outer side guard plate 32 of the upper layer heating tube and lower layer's heating tube region are enclosed on the outside of the thermal insulator
Detachably.The low temperature thermal insulation layer stacks together using low temperature insulation is closely knit, and the high temperature insulating layer is using height
Warm heat-barrier material is closely knit to stack together；The thermal insulator, which is that thermal insulation material is closely knit, to stack together.32 liang of the outer layer backplate
End can be equipped with end cap, easy to repair.
First reduction tube 11 as shown in Figure 3 is identical with 13 structure of the second reduction tube, including outer cylinder 105, hollow shaft 100,
Screw blade 101 and support bar group for fixing screw blade 101 and hollow shaft 100, each screw pitch of screw blade 101
On one group of support bar group, the screw blade rotation direction phase of the screw blade and the second reduction tube of first reduction tube 11 is distributed with
Instead, the support bar group includes first support bar 110, second support bar 120 and third support rod 130 and nut 102, described
First support bar 110, second support bar 120 and third support construction 130 are identical, and the top of the first support bar 110 has
Screw thread and nut cooperate, and the first support bar 110 is variable diameter bar, are reduced diameter section 103, reduced diameter section close to one end of screw thread
103 connect enlarged diameter sections 104, and through-hole is provided in the hollow shaft 100, and the first support bar 110 passes through in hollow shaft 100
Through-hole and 104 end of enlarged diameter section is welded on screw blade 101, the second support bar 120 and third support rod 130 are arranged
Mode is identical as first support bar, and first support bar 110, second support bar 120 and third support rod 130 are in 120 degree two-by-two,
The first support bar 110, second support bar 120 and 130 enlarged diameter section of third support rod, 104 head end and hollow shaft 100 are tangent.
The bearing with end cover mechanism includes drive end bearing bracket bearing group 4 and bearing of rear end cover group 12, is respectively placed in the first reduction tube
11 and second reduction tube 13 both ends, the drive end bearing bracket bearing group 4 is fixed in connecting shaft 2, connecting shaft 2 as shown in Figure 4 with
Hollow shaft 100 is fixedly connected by the first pin 20 of spatially right-angled intersection with the second pin 21,2 other end of connecting shaft and chain
3 connection of wheel.
9 quantity of upper layer heating tube is less than 16 quantity of lower layer's heating tube, and 9 quantity of upper layer heating tube is more than or equal to
Zero.
It further include pedestal 15, support 17 and support platform 5, the support platform 5 is fixed on pedestal 15, and is used to support
Drive end bearing bracket bearing group 4, the support 17, which is fixed on pedestal 15, is used to support the second reduction tube 13, and the pedestal 15 is fixed on bottom
Face is used to support thermal insulator 7.
It is described enter batch can 1 include the first taper angle C and the second taper angle D, the first taper angle C and the second taper angle D
Not in the same plane, the second taper angle D is close to the first reduction tube 11, and the first taper angle is far from the first reduction tube 11.
Second reduction tube, 13 outer wall two sides as shown in Figure 5 and Figure 6 are welded with limited block 33, the section packet of the limited block 33
Include the first long side 304, the second short side 303, the first circular arc 301 and the second circular arc 302,302 arc of the first circular arc 301 and the second circular arc
Spend it is identical, first circular arc 301 and the second circular arc 302 between the first long side 304 and the second short side 303, it is described first circle
Arc 301 and the second reduction tube 13 weld, and the limit of the first reduction tube 11 is in the second circular arc 302.
The course of work:
S1: pouring into material to entering in batch can 1, material reaches the first reduction tube 11 by entering batch can 1, while starting gas supply and setting
Standby B provides H2And N2Mixed gas；
Material is threaded to the first material hole and the second material hole by the screw blade 101 of the S2: the first reduction tube 11, and is reached
High temperature insulating layer is heated in 18 region by heating tube, enters the second reduction tube 13 later；
Material is threaded to discharge port by the screw blade of the S3: the second reduction tube 13, and is come out from 18 domain of high temperature insulating floor area, by
Gradually cool down, into lower storage tank 6；
S4:H2And N2Mixed gas and material direction of travel on the contrary, be passed through from discharge port into the second reduction tube 13, from
First material hole and the second material hole enter batch can from feeding inlet, and entering 1 side of batch can by entering the first reduction tube 11
It is provided with outlet, again by H2And N2Mixed gas collect；
S5: the material after reduction enters lower storage tank 6 and is cooled down, and lower storage tank 6 is by the cooling water of circulation to material
Carry out cold-zone；
S6: finally by lower 6 lower opening of storage tank by material collection.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. duplex tube helix push type reduction furnace, which is characterized in that including it is tapered enter batch can, the first reduction tube, the second reduction tube and
Lower storage tank, first reduction tube and the second reduction tube are distributed radially tangential placement up and down, on the first reduction tube head end
Fang Kaiyou feeding inlet, it is described enter batch can be placed in the feeding inlet above the first reduction tube, it is described first reduction pipe end below opens
There is the first material hole, is provided with the second material hole, first material hole and the second material hole above the second reduction pipe end
It being communicated by sealed connecting component, is provided with discharge port below the second reduction tube head end, the discharge port is communicated with lower storage tank,
The discharge port is connected with lower storage tank junction with air feed equipment, and the air feed equipment provides H2And N2Mixed gas, it is described
First reduction tube and the second reduction tube are isolated close to the side for entering batch can using low temperature thermal insulation layer, are used far from the side for entering batch can
The isolation of high temperature insulating layer, first reduction tube and the second reduction tube surrounding wrap up thermal insulator, the low temperature thermal insulation layer and high temperature
Heat-insulated to be placed on the inside of thermal insulator, first reduction tube and the second reduction tube both ends are fixed by bearing with end cover mechanism, described
The upper layer heating tube and lower layer's heating tube that the first reduction tube and the second reduction tube of the high-temperature region of high temperature insulating layer isolation are distributed with,
First reduction tube and the second reduction tube axial direction are disposed with thermocouple, the water cooling that the lower storage tank passes through storied placement
Pipe cools down material, is enclosed with outer layer backplate, the upper layer heating tube and lower layer's heating tube region on the outside of the thermal insulator
Outer side guard plate it is detachable.
2. duplex tube helix push type reduction furnace according to claim 1, which is characterized in that first reduction tube and second
Reduction tube structure is identical, including outer cylinder, hollow shaft, screw blade and support rod for fixing screw blade and hollow shaft
One group of support bar group, the screw blade of first reduction tube and the second reduction are distributed in each screw pitch of screw blade for group
The screw blade of pipe is oppositely oriented, and the support bar group includes first support bar, second support bar and third support rod and spiral shell
Mother, the first support bar, second support bar are identical with third support construction, the top of the first support bar with screw thread with
Nut cooperation, the first support bar are variable diameter bar, are reduced diameter section close to one end of screw thread, and reduced diameter section connects major diameter
Section, through-hole is provided in the hollow shaft, the first support bar passes through the through-hole in hollow shaft and enlarged diameter section end is welded on
On screw blade, the second support bar and third support rod arrangement are identical as first support bar, and first support bar,
Two support rods and third support rod are in 120 degree two-by-two, the first support bar, second support bar and third support rod enlarged diameter section
Head end is tangent with hollow shaft.
3. duplex tube helix push type reduction furnace according to claim 2, which is characterized in that the bearing with end cover mechanism includes
Drive end bearing bracket bearing group and bearing of rear end cover group are respectively placed in the both ends of the first reduction tube and the second reduction tube, the drive end bearing bracket axis
It holds group to be fixed in connecting shaft, the connecting shaft and hollow shaft are fixed and connected by the first pin and the second pin of spatially right-angled intersection
It connects, the connecting shaft other end is connect with sprocket wheel.
4. duplex tube helix push type reduction furnace according to claim 2, which is characterized in that further include pedestal, support and branch
Platform is supportted, the support platform is fixed on the base, and is used to support drive end bearing bracket bearing group, and the support is fixed on the base use
In supporting the second reduction tube, the pedestal is fixed on bottom surface, is used to support thermal insulator.
5. duplex tube helix push type reduction furnace according to claim 1, which is characterized in that it is described enter batch can include first cone
Not in the same plane, second taper angle is close for degree angle and the second taper angle, first taper angle and the second taper angle
First reduction tube, the first taper angle is far from the first reduction tube.
6. duplex tube helix push type reduction furnace according to claim 1, which is characterized in that the upper layer heating tube quantity is small
In lower layer's heating tube quantity, the upper layer heating tube quantity is more than or equal to zero.
7. duplex tube helix push type reduction furnace according to claim 1, which is characterized in that the second reduction pipe outer wall two
Side is welded with limited block, and the section of the limited block includes the first long side, the second short side, the first circular arc and the second circular arc, and first
Circular arc and the second circular arc radian are identical, and first circular arc and the second circular arc are between the first long side and the second short side, and described
One circular arc and the second reduction tube weld, and the first reduction tube limit is in the second circular arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920122384.2U CN209532103U (en) | 2019-01-24 | 2019-01-24 | Duplex tube helix push type reduction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920122384.2U CN209532103U (en) | 2019-01-24 | 2019-01-24 | Duplex tube helix push type reduction furnace |
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| Publication Number | Publication Date |
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| CN209532103U true CN209532103U (en) | 2019-10-25 |
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| CN201920122384.2U Active CN209532103U (en) | 2019-01-24 | 2019-01-24 | Duplex tube helix push type reduction furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702216A (en) * | 2019-01-24 | 2019-05-03 | 吉林省华兴粉末冶金科技有限公司 | Duplex tube helix push type reduction furnace |
-
2019
- 2019-01-24 CN CN201920122384.2U patent/CN209532103U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109702216A (en) * | 2019-01-24 | 2019-05-03 | 吉林省华兴粉末冶金科技有限公司 | Duplex tube helix push type reduction furnace |
| CN109702216B (en) * | 2019-01-24 | 2024-02-13 | 吉林省华兴新材料科技有限公司 | Double-tube spiral propelling reduction furnace |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 134000 Huinan industrial concentration area, Tonghua City, Jilin Province Patentee after: Jilin Huaxing new material technology Co.,Ltd. Address before: 134000 Huinan industrial concentration area, Tonghua City, Jilin Province Patentee before: JILIN HUAXING POWDER METALLURGY TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Double tube screw driven reduction furnace Effective date of registration: 20220624 Granted publication date: 20191025 Pledgee: Tonghua Huinan sub branch of Bank of Jilin Co.,Ltd. Pledgor: Jilin Huaxing new material technology Co.,Ltd. Registration number: Y2022220000020 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230908 Granted publication date: 20191025 Pledgee: Tonghua Huinan sub branch of Bank of Jilin Co.,Ltd. Pledgor: Jilin Huaxing new material technology Co.,Ltd. Registration number: Y2022220000020 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Double tube spiral propulsion reduction furnace Effective date of registration: 20231108 Granted publication date: 20191025 Pledgee: Tonghua Huinan sub branch of Bank of Jilin Co.,Ltd. Pledgor: Jilin Huaxing new material technology Co.,Ltd. Registration number: Y2023220000120 |
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