CN209512544U - A kind of combustion gas shuttle kiln of porcelain insulating pillar - Google Patents
A kind of combustion gas shuttle kiln of porcelain insulating pillar Download PDFInfo
- Publication number
- CN209512544U CN209512544U CN201920202982.0U CN201920202982U CN209512544U CN 209512544 U CN209512544 U CN 209512544U CN 201920202982 U CN201920202982 U CN 201920202982U CN 209512544 U CN209512544 U CN 209512544U
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- Prior art keywords
- insulation column
- fixedly connected
- wall
- plate
- water tank
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- 239000000567 combustion gas Substances 0.000 title claims abstract description 26
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000009413 insulation Methods 0.000 claims abstract description 90
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Classifications
-
- 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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
The utility model relates to combustion gas shuttle kiln technical fields, and disclose a kind of combustion gas shuttle kiln of porcelain insulating pillar, including bottom plate, the bottom of the bottom plate includes insulation column one, right connecting rod, insulation column two, left connecting rod and insulation column three, the insulation column one is located at the bottom right setting of bottom plate, the top of the insulation column one is fixedly connected with the bottom of bottom plate, the bottom that the insulation column two is located at bottom plate is centrally located, and the top of the insulation column two is fixedly connected with the bottom of bottom plate.The combustion gas shuttle kiln of the porcelain insulating pillar, by the way that insulation column one, insulation column two and insulation column three is arranged in the bottom of bottom plate, to achieve the purpose that prevent combustion gas shuttle kiln and the earth forming circuit from causing danger, by the way that water tank housing and water tank inner sleeve is arranged on the surface of kiln wall, the problem of being wasted to solve a large amount of waste heats of combustion gas shuttle kiln and be dispersed into air, and operating ambient temperature caused to increase.
Description
Technical field
The utility model relates to combustion gas shuttle kiln technical field, specially a kind of combustion gas shuttle kiln of porcelain insulating pillar.
Background technique
The high temperature that combustion gas shuttle kiln is mainly used for the products such as refractory material, grinding tool abrasive material, aluminium oxide ceramics, magnetic material is burnt
At, using self-priming Fen Qiuli burner, entire fibre lining, manually controls, UTILIZATION OF VESIDUAL HEAT IN by 1400 DEG C of maximum operation (service) temperature, due to
Operating temperature is very high, and usually right a large amount of waste heat is dispersed into air the work for wasting, while also resulting in staff when in use
Make the raising of environment temperature.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of combustion gas shuttle kiln of porcelain insulating pillar, has benefit
The advantages that with preheating and preventing operating ambient temperature from increasing, solves the heat in shuttle kiln and is dispersed into asking of wasting in air
Topic.
(2) technical solution
For the purpose for realizing the above-mentioned preheating using combustion gas shuttle kiln, the utility model is provided the following technical solutions: a kind of
The combustion gas shuttle kiln of porcelain insulating pillar, including bottom plate, the bottom of the bottom plate include insulation column one, right connecting rod, insulation branch
Column two, left connecting rod and insulation column three, the insulation column one are located at the bottom right setting of bottom plate, the insulation column one
Top be fixedly connected with the bottom of bottom plate, the bottom that the insulation column two is located at bottom plate is centrally located, the insulation column
Two top is fixedly connected with the bottom of bottom plate, and the insulation column three is located at the bottom left setting of bottom plate, the insulation branch
The top of column three is fixedly connected with the bottom of bottom plate, and the left connecting rod is set between insulation column three and insulation column two
It sets, is fixedly connected on the right side of the left side of the left connecting rod and the surface of insulation column three, the right side of the left connecting rod and insulation
It is fixedly connected on the left of the surface of pillar two, the right connecting rod is arranged between insulation column one and insulation column two, described
It is fixedly connected on the right side of the left side of right connecting rod and the surface of insulation column two, right side and the insulation column one of the right connecting rod
It is fixedly connected on the left of surface.
The top of the bottom plate includes support plate, fixed plate, water tank housing, water tank inner sleeve and Yao Bi, the support plate position
It is arranged in the top of bottom plate, the bottom of the support plate is fixedly connected with the inner wall of bottom plate, and the kiln wall is located at the top of support plate
Portion is arranged, and is fixedly connected at the top of the bottom of the kiln wall and support plate, and the water tank inner sleeve is located at the surface setting of kiln wall, institute
The inner wall for stating water tank inner sleeve is fixedly connected with the surface of kiln wall, and the fixed plate is located at the surface bottom portion setting of kiln wall, described solid
The opposite side of fixed board is fixedly connected with the surface of kiln wall, is fixedly connected at the top of the bottom of the fixed plate and support plate,
The bottom of the water tank inner sleeve is fixedly connected with the bottom of fixed plate, and the water tank housing is located at the top setting of fixed plate, institute
State water tank housing bottom and fixed plate at the top of be fixedly connected, the front of the water tank housing include side plate, water pipe, fixed block and
The back side of valve rod, the side plate is fixedly connected with the front of water tank housing, and the water pipe is located at the front setting of side plate, the side
The inner wall of plate is fixedly connected with the surface of water pipe, the fixed block be located at water pipe surface setting, the inner wall of the fixed block with
The surface of water pipe is fixedly connected, and the valve rod is located at the top setting of fixed block, the surface of the valve rod and the inner wall of fixed block
It is threadedly coupled, the surface of the valve rod and the inner thread of water pipe connect.
Preferably, the bottom of the insulation column one, insulation column two and insulation column three includes fixed sole piece, described
The surface bottom portion of insulation column one, insulation column two and insulation column three is fixedly connected with the inner wall of fixed sole piece.
Preferably, the top of the support plate includes draw back plate, and the draw back plate is located at the inside setting of kiln wall, described to push away
The bottom of pulling plate and the top slide of support plate connect.
Preferably, the two sides of the draw back plate include fixed rack and sliding block, and the fixed rack is located at the interior of kiln wall
Wall setting, the opposite side of the fixed rack are fixedly connected with the inner wall two sides of kiln wall, and the sliding block is located at the two of draw back plate
Side setting, the opposite side of the sliding block is fixedly connected with the two sides of draw back plate respectively, the opposite side of the sliding block with
The inner wall of fixed rack is slidably connected.
Preferably, the top of the water tank housing includes water injection pipe and filter screen, the surface bottom portion and water of the water injection pipe
The inner wall of case housing is fixedly connected, and the filter screen is located at the inner wall setting of water injection pipe, the inner wall and filter screen of the water injection pipe
Surface be fixedly connected.
Preferably, the surface of the water tank housing includes lateral joint strip and longitudinal joint strip, the inner wall of the longitudinal direction joint strip with
The surface of water tank housing is fixedly connected, and the transverse direction joint strip is located at the surface setting of longitudinal joint strip, the inner wall of the transverse direction joint strip
It is fixedly connected with the surface of longitudinal joint strip, the inner wall of the transverse direction joint strip is fixedly connected with the surface of water tank housing.
Compared with prior art, the utility model provides a kind of combustion gas shuttle kiln of porcelain insulating pillar, and having following has
Beneficial effect:
1, the combustion gas shuttle kiln of the porcelain insulating pillar, by the way that insulation column one, insulation column two is arranged in the bottom of bottom plate
With insulation column three, to achieve the purpose that prevent combustion gas shuttle kiln and the earth forming circuit from causing danger, by Yao Bi
Surface setting water tank housing and water tank inner sleeve, wasted to solve a large amount of waste heats of combustion gas shuttle kiln and be dispersed into air, and
The problem of causing operating ambient temperature to increase.
2, the combustion gas shuttle kiln of the porcelain insulating pillar, by insulation column one, insulation column two and insulation column three it
Between right connecting rod and left connecting rod are set, thus achieved the purpose that prevent it is unstable between insulation column, by outside water tank
The top setting water injection pipe and filter screen of set are not easy clearly to solve and prevent impurity from entering between water tank housing and water tank inner sleeve
The problem of reason.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is partial structurtes enlarged drawing at the utility model structure A；
Fig. 3 is the utility model the structure left view；
Fig. 4 is partial structurtes enlarged drawing at the utility model structure B.
Wherein: 1 bottom plate, 2 insulation columns one, 3 right connecting rods, 4 insulation columns two, 5 left connecting rods, 6 fixed sole pieces, 7 are absolutely
Edge pillar three, 8 draw back plates, 9 water injection pipes, 10 filter screens, 11 longitudinal joint strips, 12 lateral joint strips, 13 water tank housings, 14 water pipes, 15
Fixed block, 16 valve rods, 17 side plates, 18 fixed plates, 19 support plates, 20 water tank inner sleeves, 21 kiln walls, 22 fixed racks, 23 sliding blocks.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-4, a kind of combustion gas shuttle kiln of porcelain insulating pillar, including bottom plate 1 are please referred to, the bottom of bottom plate 1 includes insulation
Pillar 1, right connecting rod 3, insulation column 24, left connecting rod 5 and insulation column 37, insulation column 1 are located at the bottom of bottom plate 1
Setting, the top of insulation column 1 are fixedly connected with the bottom of bottom plate 1 on the right side of portion, and insulation column 24 is located at the bottom of bottom plate 1
It is centrally located, the top of insulation column 24 is fixedly connected with the bottom of bottom plate 1, and the bottom that insulation column 37 is located at bottom plate 1 is left
Side setting, the top of insulation column 37 are fixedly connected with the bottom of bottom plate 1, and left connecting rod 5 is located at insulation column 37 and insulation
It is arranged between pillar 24, is fixedly connected on the right side of the left side of left connecting rod 5 and the surface of insulation column 37, the right side of left connecting rod 5
It is fixedly connected on the left of side and the surface of insulation column 24, right connecting rod 3 is set between insulation column 1 and insulation column 24
It sets, is fixedly connected on the right side of the left side of right connecting rod 3 and the surface of insulation column 24, the right side of right connecting rod 3 and insulation column one
It is fixedly connected on the left of 2 surface, the bottom of insulation column 1, insulation column 24 and insulation column 37 includes fixed sole piece
6, the surface bottom portion of insulation column 1, insulation column 24 and insulation column 37 is fixedly connected with the inner wall of fixed sole piece 6,
Insulation column 1, insulation column 24 and insulation column 37 pass through fixed sole piece 6 in the bottom of bottom plate 1 and connect with the earth, prevent
Forming circuit causes danger between combustion gas shuttle kiln and the earth.
The top of bottom plate 1 includes support plate 19, fixed plate 18, water tank housing 13, water tank inner sleeve 20 and kiln wall 21, support plate
19 tops for being located at bottom plate 1 are arranged, and the bottom of support plate 19 is fixedly connected with the inner wall of bottom plate 1, and kiln wall 21 is located at support plate 19
Top setting, the bottom of kiln wall 21 is fixedly connected with the top of support plate 19, and kiln wall 21 is the material manufacture of interior high temperature, and energy
Enough effectives, water tank inner sleeve 20 are located at the surface setting of kiln wall 21, and the surface of the inner wall and kiln wall 21 of water tank inner sleeve 20 is fixed
Connection, fixed plate 18 are located at the surface bottom portion setting of kiln wall 21, and the opposite side of fixed plate 18 and the surface of kiln wall 21 are fixed
Connection, the bottom of fixed plate 18 are fixedly connected with the top of support plate 19, the bottom of water tank inner sleeve 20 and the bottom of fixed plate 18
It is fixedly connected, water tank housing 13 is located at the top setting of fixed plate 18, fixes at the top of the bottom of water tank housing 13 and fixed plate 18
Connection, the top of support plate 19 include draw back plate 8, and draw back plate 8 is located at the inside setting of kiln wall 21, the bottom of draw back plate 8 and branch
The top slide of fagging 19 connects, and the two sides of draw back plate 8 include fixed rack 22 and sliding block 23, and fixed rack 22 is located at kiln wall
21 inner wall setting, the opposite side of fixed rack 22 are fixedly connected with the inner wall two sides of kiln wall 21, and sliding block 23 is located at draw back plate 8
Two sides setting, the opposite side of sliding block 23 is fixedly connected with the two sides of draw back plate 8 respectively, the opposite side of sliding block 23 with
The inner wall of fixed rack 22 is slidably connected, and material is sent into inside kiln wall 21 by draw back plate 8 by sliding block 23 and fixed rack 22 to be added
Work, the top of water tank housing 13 include water injection pipe 9 and filter screen 10, the inner wall of the surface bottom portion and water tank housing 13 of water injection pipe 9
It being fixedly connected, filter screen 10 is located at the inner wall setting of water injection pipe 9, and the inner wall of water injection pipe 9 is fixedly connected with the surface of filter screen 10,
The front of water tank housing 13 includes side plate 17, water pipe 14, fixed block 15 and valve rod 16, the back side and the water tank housing 13 of side plate 17
Front is fixedly connected, and water pipe 14 is located at the front setting of side plate 17, and the inner wall of side plate 17 is fixedly connected with the surface of water pipe 14, Gu
Determine the surface setting that block 15 is located at water pipe 14, the inner wall of fixed block 15 is fixedly connected with the surface of water pipe 14, and valve rod 16 is located at solid
Determine the top setting of block 15, the surface of valve rod 16 is connect with the inner thread of fixed block 15, surface and the water pipe 14 of valve rod 16
Inner thread connection, valve rod 16 is by the flowing of the water inside the motion control inside fixed block 15 and water pipe 14, outside water tank
The surface of set 13 includes transverse direction joint strip 12 and longitudinal joint strip 11, the fixed company of the inner wall of longitudinal joint strip 11 and the surface of water tank housing 13
It connects, lateral joint strip 12 is located at the surface setting of longitudinal joint strip 11, and the inner wall of lateral joint strip 12 and the surface of longitudinal joint strip 11 are fixed
Connection, the inner wall of lateral joint strip 12 are fixedly connected with the surface of water tank housing 13.
When in use, by water injection pipe 9 to injecting cold water between water tank housing 13 and water tank inner sleeve 20, filter screen 10 is by water
In contaminant filter, material is placed on to shift onto inside kiln wall 21 on draw back plate 8 and process, and the waste heat of generation heats kiln wall 21, through kiln
Wall 21 is transmitted to water tank inner sleeve 20 and heats internal cold water, releases the hot water of heating from water pipe 14 after shut-down, then from note
Water pipe 9 injects cold water and helps 21 internal heat dissipating of kiln wall, while being used to heat cold water for heat, and placement, which is dispersed into air, causes ring
Border temperature increases.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of combustion gas shuttle kiln of porcelain insulating pillar, including bottom plate (1), it is characterised in that: the bottom of the bottom plate (1) includes
Insulation column one (2), right connecting rod (3), insulation column two (4), left connecting rod (5) and insulation column three (7), the insulation branch
Column one (2) is located at the bottom right setting of bottom plate (1), the fixed company in the top of the insulation column one (2) and the bottom of bottom plate (1)
It connects, the bottom that the insulation column two (4) is located at bottom plate (1) is centrally located, the top of the insulation column two (4) and bottom plate
(1) bottom is fixedly connected, and the insulation column three (7) is located at the bottom left setting of bottom plate (1), the insulation column three
(7) top is fixedly connected with the bottom of bottom plate (1), and the left connecting rod (5) is located at insulation column three (7) and insulation column two
(4) it is arranged between, is fixedly connected on the right side of the left side of the left connecting rod (5) and the surface of insulation column three (7), the left connection
It is fixedly connected on the left of the right side of bar (5) and the surface of insulation column two (4), the right connecting rod (3) is located at insulation column one (2)
It is arranged between insulation column two (4), it is fixed on the right side of the left side of the right connecting rod (3) and the surface of insulation column two (4) to connect
It connects, is fixedly connected on the left of the right side of the right connecting rod (3) and the surface of insulation column one (2)；
The top of the bottom plate (1) includes support plate (19), fixed plate (18), water tank housing (13), water tank inner sleeve (20) and kiln
Wall (21), the support plate (19) are located at the top setting of bottom plate (1), and the bottom of the support plate (19) is interior with bottom plate (1)
Wall is fixedly connected, and the kiln wall (21) is located at the top setting of support plate (19), the bottom of the kiln wall (21) and support plate
(19) it is fixedly connected at the top of, the water tank inner sleeve (20) is located at the surface setting of kiln wall (21), the water tank inner sleeve (20)
Inner wall is fixedly connected with the surface of Yao Bi (21), and the fixed plate (18) is located at the surface bottom portion setting of kiln wall (21), described solid
The opposite side of fixed board (18) is fixedly connected with the surface of Yao Bi (21), the bottom and support plate (19) of the fixed plate (18)
Top be fixedly connected, the bottom of the water tank inner sleeve (20) is fixedly connected with the bottom of fixed plate (18), the water tank housing
(13) top positioned at fixed plate (18) is arranged, and is fixedly connected at the top of the bottom of the water tank housing (13) and fixed plate (18),
The front of the water tank housing (13) includes side plate (17), water pipe (14), fixed block (15) and valve rod (16), the side plate (17)
The back side be fixedly connected with the front of water tank housing (13), the water pipe (14) be located at side plate (17) front setting, the side
The inner wall of plate (17) is fixedly connected with the surface of water pipe (14), and the fixed block (15) is located at the surface setting of water pipe (14), institute
The inner wall for stating fixed block (15) is fixedly connected with the surface of water pipe (14), and the valve rod (16), which is located at the top of fixed block (15), to be set
It sets, the surface of the valve rod (16) is connect with the inner thread of fixed block (15), the surface and water pipe (14) of the valve rod (16)
Inner thread connection.
2. a kind of combustion gas shuttle kiln of porcelain insulating pillar according to claim 1, it is characterised in that: the insulation column one
(2), the bottom of insulation column two (4) and insulation column three (7) includes fixed sole piece (6), the insulation column one (2), absolutely
The surface bottom portion of edge pillar two (4) and insulation column three (7) is fixedly connected with the inner wall of fixed sole piece (6).
3. a kind of combustion gas shuttle kiln of porcelain insulating pillar according to claim 1, it is characterised in that: the support plate (19)
Top include draw back plate (8), the draw back plate (8) be located at kiln wall (21) inside setting, the bottom of the draw back plate (8) with
The top slide of support plate (19) connects.
4. a kind of combustion gas shuttle kiln of porcelain insulating pillar according to claim 3, it is characterised in that: the draw back plate (8)
Two sides include fixed rack (22) and sliding block (23), the fixed rack (22) is located at the inner wall setting of kiln wall (21), institute
It states the opposite side of fixed rack (22) to be fixedly connected with the inner wall two sides of Yao Bi (21), the sliding block (23) is located at draw back plate
(8) two sides setting, the opposite side of the sliding block (23) are fixedly connected with the two sides of draw back plate (8) respectively, the sliding block
(23) inner wall of the opposite side with fixed rack (22) is slidably connected.
5. a kind of combustion gas shuttle kiln of porcelain insulating pillar according to claim 1, it is characterised in that: the water tank housing
(13) top includes water injection pipe (9) and filter screen (10), and the surface bottom portion of the water injection pipe (9) is interior with water tank housing (13)
Wall is fixedly connected, and the filter screen (10) is located at the inner wall setting of water injection pipe (9), the inner wall and filter screen of the water injection pipe (9)
(10) surface is fixedly connected.
6. a kind of combustion gas shuttle kiln of porcelain insulating pillar according to claim 1, it is characterised in that: the water tank housing
(13) surface includes lateral joint strip (12) and longitudinal joint strip (11), the inner wall of the longitudinal direction joint strip (11) and water tank housing (13)
Surface be fixedly connected, the transverse direction joint strip (12) is located at the surface setting of longitudinal joint strip (11), the transverse direction joint strip (12)
Inner wall is fixedly connected with the surface of longitudinal joint strip (11), and the inner wall of the transverse direction joint strip (12) and the surface of water tank housing (13) are solid
Fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920202982.0U CN209512544U (en) | 2019-02-16 | 2019-02-16 | A kind of combustion gas shuttle kiln of porcelain insulating pillar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920202982.0U CN209512544U (en) | 2019-02-16 | 2019-02-16 | A kind of combustion gas shuttle kiln of porcelain insulating pillar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209512544U true CN209512544U (en) | 2019-10-18 |
Family
ID=68204280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920202982.0U Active CN209512544U (en) | 2019-02-16 | 2019-02-16 | A kind of combustion gas shuttle kiln of porcelain insulating pillar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209512544U (en) |
-
2019
- 2019-02-16 CN CN201920202982.0U patent/CN209512544U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 528000 area a, first floor, building 5, No. 16, Qinggong Third Road, Chancheng District, Foshan City, Guangdong Province Patentee after: Guangdong Hezongda Industrial Co.,Ltd. Address before: 528000, Rear seat, No. 43 Hongnong Avenue, Dasha Village, Zhangcha Street, Chancheng District, Foshan City, Guangdong Province Patentee before: Guangdong Hezongda Industrial Co.,Ltd. |