CN115648370A - Fireproof treatment device for bamboo-wood wallboard - Google Patents
Fireproof treatment device for bamboo-wood wallboard Download PDFInfo
- Publication number
- CN115648370A CN115648370A CN202211293827.7A CN202211293827A CN115648370A CN 115648370 A CN115648370 A CN 115648370A CN 202211293827 A CN202211293827 A CN 202211293827A CN 115648370 A CN115648370 A CN 115648370A
- Authority
- CN
- China
- Prior art keywords
- soaking
- bamboo
- soaking box
- wallboard
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002023 wood Substances 0.000 title claims description 36
- 238000002791 soaking Methods 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 17
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 17
- 241001330002 Bambuseae Species 0.000 claims abstract description 17
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 17
- 239000011425 bamboo Substances 0.000 claims abstract description 17
- 230000002265 prevention Effects 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims description 18
- 239000010720 hydraulic oil Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 230000003028 elevating effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 230000003860 sleep quality Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 208000003464 asthenopia Diseases 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The utility model provides a bamboo is fire prevention processing apparatus for wallboard, including the sealed chamber door of soaking case and the setting of soaking case one side opening, the open setting in top of soaking case, the soaking incasement is fixed with the upper cover that can reciprocate through elevating system, soaking bottom of the case portion is fixed with many shower, every shower communicates each other, and communicate with the liquid feeding pipe of soaking bottom of the case portion, the liquid feeding pipe outwards extends and vertical upwards, and communicate through three-way valve and liquid feeding valve and hot-blast admission valve on the top, on cover and be provided with the exhaust pipe, be provided with multilayer support in the soaking case, liquid feeding pipe one side of soaking bottom of the case portion still is provided with the flowing back valve, the border of upper cover is provided with the round and is used for the rubber seal strip with soaking case and the inboard contact of sealed chamber. The invention can fully utilize the waste heat of the bamboo wallboard and the soaking box during drying to accelerate the soaking process, greatly shortens the period of fireproof treatment of the bamboo wallboard, and effectively saves the energy consumption.
Description
Technical Field
The invention relates to the technical field of bamboo and wood treatment, in particular to a fireproof treatment device for bamboo and wood wallboards.
Background
Bamboo wood is one of the commonly used building materials at present, and mainly has the following advantages:
1. bamboo has strong absorption effect on ultraviolet rays and radiation, and can scatter light rays and reduce eye fatigue and damage.
2. Reduce noise and promote sleep quality. The bamboo-wood wallboard generates perfect diffuse reflection to sound, effectively buffers the impact of heavy bass and well absorbs the bad sharp wave of sound by the material, thereby forming perfect three-level noise reduction function in space and greatly improving the sleep quality in one third of life.
3. Bamboo-wood wallboard belongs to bad conductor, and the room that adopts bamboo-wood wallboard can be warm in winter and cool in summer, moreover because bamboo wood itself can play the regulating action to room air humidity, so in the ancient fort and the palace that have hundreds of years history in europe, bamboo-wood wallboard is everywhere visible, is the necessary selection of high-grade fitment.
The bamboo-wood wallboard is processed by bamboo through one process, in order to improve the practicability of the bamboo-wood wallboard, the bamboo-wood wallboard needs to be subjected to fire-proof treatment, for example, the invention patent CN201710551588.3 provides a bamboo-wood fire-proof treatment method, which comprises the following steps: machining; (2) drying treatment: (3) soaking; (4) drying; before soaking treatment, drying to remove water content, so that effective flame-retardant components in the fire-retardant agent penetrate into the shape material, especially the composition of the fire-retardant agent, a fire-retardant structure is formed on the surface of the shape material, and a flame-retardant tissue is formed in the shape material; drying again after soaking treatment, removing water in the shape material to enable the shape material to be in a usable state, and if the shape material after the first fireproof treatment passes a fire test, the test is qualified, which indicates that the fireproof agent is reasonably prepared, the soaking treatment is successful, and the fireproof performance reaches the standard. Whole process need put earlier and dry in the drying chamber, then put into the fermentation vat again and soak, during the stoving, if bamboo wood wallboard material is less then can cause thermal too much to run off, lacks endothermic bamboo wood wallboard promptly, unnecessary heat can't absorb, causes the too much consumption of the energy, in addition, need shift after the stoving and soak, the more loaded down with trivial details waste time of operation, hot bamboo wood wallboard slowly cools off easily moreover, is unfavorable for absorbing the soak more effectively with the help of the heat.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a fireproof treatment device for bamboo and wood wallboards, which not only has adjustable drying space, but also realizes the integration of drying and soaking.
The invention aims to realize the aim, and the fireproof treatment device for the bamboo-wood wallboard comprises a soaking box and a sealing box door with one side opening of the soaking box, wherein the top of the soaking box is arranged in an open manner, an upper cover capable of moving up and down is fixed in the soaking box through a lifting mechanism, a plurality of spray pipes are fixed at the bottom of the soaking box, each spray pipe is communicated with each other and is communicated with a liquid adding pipe at the bottom of the soaking box, the liquid adding pipes extend outwards and are vertically upwards, the top ends of the liquid adding pipes are communicated with the liquid adding valves and a hot air inlet valve through a three-way valve, an exhaust pipe is arranged on the upper cover, a multi-layer bracket is arranged in the soaking box, one side of the liquid adding pipes at the bottom of the soaking box is also provided with a liquid discharging valve, and the edge of the upper cover is provided with a circle of rubber sealing strips for contacting with the inner side surfaces of the soaking box and the sealing box door.
Furthermore, the lifting mechanism is a plurality of symmetrically arranged multistage hydraulic oil cylinders, the fixed ends of the hydraulic oil cylinders are fixedly connected with the fixing frame at the top of the soaking box, and the telescopic ends of the hydraulic oil cylinders are fixedly connected with the upper surface of the upper cover.
Furthermore, the soaking box and the sealing box door are made of two layers of stainless steel plates with heat insulation materials clamped between, and the sealing box door is fixedly connected with the soaking box through a hinge.
Furthermore, one side of the sealing box door opposite to the hinge is respectively provided with a plurality of threaded flanges, and the threaded column of each threaded flange is correspondingly screwed in the threaded hole of the side wall fixing block of the soaking box.
Furthermore, a telescopic hose is arranged below the fixing frame between the multi-stage cylinders, the lower end of the telescopic hose is fixedly connected with the exhaust pipe, and the upper end of the telescopic hose penetrates through and is fixedly connected with the fixing frame.
Further, the bottom outside wall of the steeping box supports a plurality of legs.
By adopting the technical scheme, the soaking volume of the soaking box can be changed, and the soaking volume can be properly adjusted according to the amount of the bamboo-wood wallboard materials, so that heat and soaking liquid are fully utilized; and drying and soaking can be realized through one device, so that the efficiency is improved, the fireproof treatment time of the bamboo-wood wallboard is shortened, the soaking process is accelerated by the waste heat of the bamboo-wood wallboard and the soaking box during drying, the fireproof treatment period of the bamboo-wood wallboard is greatly shortened, and the energy consumption is effectively saved.
Drawings
FIG. 1 is a schematic front view of the present invention;
fig. 2 is a schematic view of the internal structure of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present embodiment is described in detail below with reference to the accompanying drawings:
this embodiment provides a fire prevention processing apparatus for bamboo wood wallboard, please refer to fig. 1-2 in the attached drawings of the specification together.
As shown in fig. 1-2, a fire-proof treatment device for bamboo and wood wall boards comprises a soaking box 1 and a sealing box door 2 arranged at an opening at one side of the soaking box 1, wherein the top of the soaking box 1 is arranged in an open manner, an upper cover 3 capable of moving up and down is fixed in the soaking box 1 through a lifting mechanism, if the lifting mechanism is a plurality of symmetrically arranged multistage hydraulic cylinders 9, the fixed ends of the hydraulic cylinders 9 are fixedly connected with a fixed frame 10 at the top of the soaking box 1, and the telescopic ends of the hydraulic cylinders 9 are fixedly connected with the upper surface of the upper cover 3, so that the size of a space between the upper part of the bottom of the soaking box 1 and the lower part of the upper cover 3 can be adjusted, if the bamboo and wood wall boards are few in materials, the upper cover 3 descends, the drying space and the soaking space are reduced, and heat and soaking liquid are saved;
the bottom of the soaking box 1 is fixed with a plurality of spray pipes 4, each spray pipe 4 is communicated with each other and is communicated with a liquid adding pipe 5 at the bottom of the soaking box 1, the liquid adding pipes 5 extend outwards and are vertically upwards, the top ends of the liquid adding pipes are communicated with a liquid adding valve 13 and a hot air inlet valve 14 through a three-way valve 8, an exhaust pipe 6 is arranged on the upper cover 3, a multilayer support 7 is arranged in the soaking box 1, a liquid discharge valve 15 is further arranged on one side of the liquid adding pipe 5 at the bottom of the soaking box 1, a circle of rubber sealing strip 12 used for being in contact with the inner side faces of the soaking box 1 and the sealing box door 2 is arranged on the edge of the upper cover 3, and a plurality of support legs are supported on the outer side wall of the bottom of the soaking box 1.
In order to effectively utilize heat and prevent heat outflow during drying, the soaking box 1 and the sealing box door 2 are made of two layers of stainless steel plates with heat insulation materials clamped therebetween, the outside of the liquid adding pipe 5 can be wrapped with heat insulation cotton for heat preservation, and the sealing box door 2 is fixedly connected with the soaking box 1 through a hinge. The side of the sealing box door 2 opposite to the hinge is respectively provided with a plurality of threaded flanges 16, and the threaded column of each threaded flange 16 is correspondingly screwed in the threaded hole of the side wall fixing block 17 of the soaking box 1. The mount 10 below between multistage cylinder 9 is provided with bellows 11, the lower extreme and the exhaust pipe 6 fixed connection of bellows 11, the upper end of bellows 11 runs through and with mount 10 fixed connection, the hot-blast rich steam that discharges when bellows 11 not only is convenient for dry, but also can be along with liquid constantly gets into with inside air escape when the liquid feeding, hot-blast admission valve 14, three-way valve 8, liquid feeding pipe 5 and shower 4 can suitably thicken, and 4 spouts of shower are great, it is smooth and easy to ensure to advance hot-blastly.
The working principle of the invention is as follows: placing the bamboo-wood wallboard on each layer of support 7, and leaving a gap between the bamboo-wood wallboards when placing, then closing sealing door 2, three-way valve 8, liquid adding valve 13 and hot air intake valve 14 are opened, liquid adding valve 13, flowing back valve 15 are closed, the hot air that equipment such as external air heaters produced passes through hot air intake valve 14, three-way valve 8, liquid adding pipe 5, shower 4, hot air fills up steeping box 1 rapidly, dry to inside steeping box 1 bamboo-wood wallboard, take away a large amount of moisture, be favorable to subsequent steeping liquor infiltration, set up stoving temperature time as required, after drying, close hot air intake valve 14, open liquid adding valve 13, add devices such as liquid adding pump of liquid adding valve 13 external, make fire prevention agent fill up steeping box 1, then close liquid adding valve 13, can set for the soak time as required, thereby soak the wallboard in steeping box 1, and can effectively utilize the heat in wallboard and steeping box 1, because the higher temperature is more active the molecular motion, thereby can accelerate soaking efficiency greatly, after soaking the completion, open fire prevention valve 15 stores the fire prevention agent (namely soaking liquid), reserve, also can continue to further carry out on the hot air drying process on the bamboo-wood wallboard, make the bamboo-wood wallboard more repeated drying step of drying, can be carried out.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a bamboo is fire prevention processing apparatus for wallboard, includes sealed chamber door (2) that soaks case (1) and soaks case (1) one side opening set up, the open setting in top of soaks case (1), its characterized in that: an upper cover (3) capable of moving up and down is fixed in the soaking box (1) through a lifting mechanism, a plurality of spray pipes (4) are fixed at the bottom of the soaking box (1), each spray pipe (4) is communicated with each other and is communicated with a liquid adding pipe (5) at the bottom of the soaking box (1), the liquid adding pipes (5) extend outwards and vertically upwards, and are communicated with a liquid adding valve (13) and a hot air inlet valve (14) through a three-way valve (8) at the top end, an exhaust pipe (6) is arranged on the upper cover (3), a multilayer support (7) is arranged in the soaking box (1), a liquid discharging valve (15) is further arranged on one side of the liquid adding pipe (5) at the bottom of the soaking box (1), and a rubber sealing strip (12) which is used for being in contact with the inner side faces of the soaking box (1) and the sealing box door (2) is arranged on the edge of the upper cover (3).
2. The bamboo-wood wallboard is with fire prevention processing apparatus of claim 1, characterized in that: the lifting mechanism is a plurality of symmetrically arranged multistage hydraulic oil cylinders (9), the fixed ends of the hydraulic oil cylinders (9) are fixedly connected with a fixing frame (10) at the top of the soaking box (1), and the telescopic ends of the hydraulic oil cylinders (9) are fixedly connected with the upper surface of the upper cover (3).
3. The fire prevention processing apparatus for bamboo-wood wallboard of claim 1, characterized in that: the soaking box (1) and the sealing box door (2) are made of two layers of stainless steel plates with heat insulation materials clamped between, and the sealing box door (2) is fixedly connected with the soaking box (1) through a hinge.
4. The fire prevention processing apparatus for bamboo-wood wallboard of claim 1, characterized in that: one side of the sealing box door (2) opposite to the hinge is respectively provided with a plurality of threaded flanges (16), and the threaded column of each threaded flange (16) is correspondingly screwed in the threaded hole of the side wall fixing block (17) of the soaking box (1).
5. The fire prevention processing apparatus for bamboo-wood wallboard of claim 1, characterized in that: a flexible hose (11) is arranged below the fixing frame (10) between the multi-stage cylinders (9), the lower end of the flexible hose (11) is fixedly connected with the exhaust pipe (6), and the upper end of the flexible hose (11) penetrates through and is fixedly connected with the fixing frame (10).
6. The fire prevention processing apparatus for bamboo-wood wallboard of claim 1, characterized in that: the outer side wall of the bottom of the soaking box (1) is supported with a plurality of supporting legs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211293827.7A CN115648370A (en) | 2022-10-21 | 2022-10-21 | Fireproof treatment device for bamboo-wood wallboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211293827.7A CN115648370A (en) | 2022-10-21 | 2022-10-21 | Fireproof treatment device for bamboo-wood wallboard |
Publications (1)
Publication Number | Publication Date |
---|---|
CN115648370A true CN115648370A (en) | 2023-01-31 |
Family
ID=84988471
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211293827.7A Pending CN115648370A (en) | 2022-10-21 | 2022-10-21 | Fireproof treatment device for bamboo-wood wallboard |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115648370A (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017133482A1 (en) * | 2016-02-04 | 2017-08-10 | 王晓东 | Electric-powered vacuum pressing machine |
CN107336310A (en) * | 2017-07-07 | 2017-11-10 | 戴海泉 | Bamboo and wood fireproof treatment method |
CN209274025U (en) * | 2018-04-25 | 2019-08-20 | 广大纸品(中山)有限公司 | A kind of cardboard processing clast recycling and processing device |
CN209836671U (en) * | 2019-04-30 | 2019-12-24 | 无锡国赢科技有限公司 | Automatic soaking box |
CN214637972U (en) * | 2021-03-24 | 2021-11-09 | 中山市道享节能技术服务有限公司 | Water based paint quick drying equipment |
CN216054589U (en) * | 2021-06-10 | 2022-03-15 | 昆山基侑电子科技有限公司 | Wafer washs uses soak device |
CN216124677U (en) * | 2021-07-19 | 2022-03-25 | 王丽娟 | Cotton soak device of disinfection is used in nursing |
CN216440915U (en) * | 2021-10-21 | 2022-05-06 | 开封市开建铝业有限公司 | Aluminum product spraying solidification equipment |
CN115179373A (en) * | 2022-06-22 | 2022-10-14 | 周美君 | Preparation method of polyurethane plywood |
-
2022
- 2022-10-21 CN CN202211293827.7A patent/CN115648370A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017133482A1 (en) * | 2016-02-04 | 2017-08-10 | 王晓东 | Electric-powered vacuum pressing machine |
CN107336310A (en) * | 2017-07-07 | 2017-11-10 | 戴海泉 | Bamboo and wood fireproof treatment method |
CN209274025U (en) * | 2018-04-25 | 2019-08-20 | 广大纸品(中山)有限公司 | A kind of cardboard processing clast recycling and processing device |
CN209836671U (en) * | 2019-04-30 | 2019-12-24 | 无锡国赢科技有限公司 | Automatic soaking box |
CN214637972U (en) * | 2021-03-24 | 2021-11-09 | 中山市道享节能技术服务有限公司 | Water based paint quick drying equipment |
CN216054589U (en) * | 2021-06-10 | 2022-03-15 | 昆山基侑电子科技有限公司 | Wafer washs uses soak device |
CN216124677U (en) * | 2021-07-19 | 2022-03-25 | 王丽娟 | Cotton soak device of disinfection is used in nursing |
CN216440915U (en) * | 2021-10-21 | 2022-05-06 | 开封市开建铝业有限公司 | Aluminum product spraying solidification equipment |
CN115179373A (en) * | 2022-06-22 | 2022-10-14 | 周美君 | Preparation method of polyurethane plywood |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105725776A (en) | Noise-reducing and purifying electric kettle | |
CN210986868U (en) | Electric automation control's heat dissipation regulator cubicle | |
CN115648370A (en) | Fireproof treatment device for bamboo-wood wallboard | |
CN212481917U (en) | Traditional chinese medical science is with traditional chinese medicine drying device | |
CN217783340U (en) | Radiation-proof sound-insulation protective airtight door | |
CN111660388A (en) | Wood balance health preserving method | |
CN104422248B (en) | The processing means improving wood drying rate and the method utilizing this device desiccated wood | |
CN212107112U (en) | Safe efficient fire prevention valve that discharges fume | |
CN102704708B (en) | Novel heat preservation board room | |
CN213648008U (en) | Constant temperature and humidity curing means of concrete | |
CN213638658U (en) | PAC motion controller with high heat dissipation performance | |
CN213682689U (en) | Outer circulation ventilation curtain | |
CN208936587U (en) | Keep the temperature air source heat pump all-in-one machine | |
CN208948009U (en) | A kind of automatic storage device of dehydrated onion | |
CN218814523U (en) | External heat-insulation green building wall for building | |
CN216022872U (en) | Anti-freezing device for fire pump | |
CN201302392Y (en) | External noise reduction and freeze prevention device for cooling tower in power plant | |
CN209914227U (en) | Copper-clad plate vacuum drying equipment | |
CN219014851U (en) | Natural gas fruit and vegetable dryer | |
CN207907383U (en) | A kind of air humidity adjusting device | |
CN207848563U (en) | A kind of mechanical water trap | |
CN206917350U (en) | A kind of energy-saving constant-temperature constant humidity workshop | |
CN217135282U (en) | High-pressure-maintaining energy-saving hydraulic station | |
CN220356038U (en) | Wood drying equipment for production of wire-buckling paint-free wood door | |
CN209130195U (en) | A kind of flap valve of novel metal hinge arrangement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230131 |