CN218107579U - Automatic discharging device for lithium battery slurry stirring equipment - Google Patents
Automatic discharging device for lithium battery slurry stirring equipment Download PDFInfo
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- CN218107579U CN218107579U CN202221324935.1U CN202221324935U CN218107579U CN 218107579 U CN218107579 U CN 218107579U CN 202221324935 U CN202221324935 U CN 202221324935U CN 218107579 U CN218107579 U CN 218107579U
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses an automatic discharging device for lithium battery slurry stirring equipment, which comprises a discharging channel which is positioned at the bottom of a stirring barrel of the stirring equipment and is communicated with a discharging port at the bottom of the stirring barrel, wherein the discharging channel can be controlled to be closed when the stirring barrel rotates and stirs and to be opened when the stirring is finished; the utility model utilizes the automatic discharging system to open or close the discharging channel, thereby realizing automatic control on the discharging link, changing the traditional manual discharging mode and improving the production efficiency; meanwhile, the opening or closing position of the automatic discharging system can be positioned at the bottom of the barrel, and compared with the ball valve in the prior art, the automatic discharging system has the possibility of eliminating the dead angle of stirring, so that the quality of a final product is guaranteed.
Description
Technical Field
The utility model relates to an auxiliary device that lithium cell production was equipped, in particular to an automatic discharging device that is used for lithium cell thick liquids stirring to equip.
Background
The stirring of the lithium battery core slurry has an important influence on the quality of the product in the whole production process of the lithium ion battery, and the quality of the slurry dispersion directly influences the quality of the subsequent lithium ion battery production and the performance of the product.
The stirring of lithium cell paddle generally adopts the structure of rotatory bucket, through the rotatory stirring of accomplishing of the rotatory bucket of external force drive, has rotatory bottom of the barrel portion to emit thick liquids after the stirring is accomplished. The discharging door of the conventional lithium battery slurry stirring host adopts a manual ball valve mode, a manual ball valve is manually closed during stirring, and the manual ball valve is manually opened during discharging. The manual discharging mode is adopted, the discharging efficiency is low, the sealing performance of the ball valve is poor after the ball valve is used for a long time, the ball valve needs to be replaced in time, and the production is influenced; meanwhile, a connecting channel between the ball valve and the rotary barrel has a stirring dead angle, so that the lithium battery slurry cannot be stirred completely and uniformly, and the final product quality is influenced.
Therefore, the discharging part of the existing stirring equipment needs to be improved, the automatic control of the discharging link can be realized, the traditional manual discharging mode is changed, and the production efficiency is improved; meanwhile, the possibility of eliminating the stirring dead angle is realized, and the quality of the final product is ensured.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims to provide an automatic discharging device for lithium battery slurry stirring equipment, which can realize automatic control on a discharging link, change the traditional manual discharging mode and improve the production efficiency; meanwhile, the possibility of eliminating the dead angle of stirring is realized, and the quality of the final product is ensured.
The utility model discloses an automatic discharging device for lithium cell thick liquids stirring is equipped, including being located the agitator bottom that the stirring was equipped and having the discharging channel who communicates with agitator bottom discharge gate, the discharging channel can be controlled close when the rotatory stirring of agitator and open the ejection of compact when the stirring is accomplished.
Further, still include:
the valve cylinder body is fixedly arranged, and a valve cylinder hole of the valve cylinder body is communicated with the discharging channel;
and the piston valve core is arranged in the valve cylinder hole and can be controlled to reciprocate along the valve cylinder hole to realize the opening or closing of the discharge channel.
Further, the discharge channel is arranged on a discharge seat fixed at the bottom of the stirring barrel, and the upper end of the valve cylinder body is sealed and rotationally matched with the lower end of the discharge seat through a dynamic sealing structure; the discharging channel and the valve cylinder hole are in the same diameter and coaxial, so that the piston valve core can move upwards and block the bottom discharging hole when the stirring barrel rotates and stirs, and can move downwards to an opening discharging position when the stirring is completed.
Further, a piston rod is arranged in a rotating fit with the piston valve core;
still include piston case drive assembly, include:
the driving cylinder body is fixedly connected with the valve cylinder body and provided with a driving cylinder hole, and the piston rod extends into the driving cylinder hole;
and the driving piston is matched with the piston rod in a driving mode and is located in the driving cylinder hole and can be driven to move back and forth along the driving cylinder hole.
Further, the piston valve spool includes:
the outer circle of the piston valve core main body is provided with a valve core sealing piece which is in sealing fit with the valve cylinder hole and the discharge channel;
and the front end bearing and the rear end bearing are respectively arranged at two ends of the piston valve core main body and are used for the piston valve core main body to be in running fit with the piston rod.
Furthermore, the piston valve core main body is formed by arranging a plurality of piston units along the axial direction, the end parts of the adjacent piston units are matched through a spigot, and a sealing groove for installing a valve core sealing element is formed at the spigot.
Further, a discharging door plate is arranged at the foremost end of the piston valve core main body, and the front end face of the discharging door plate is a closed plane and is used for moving upwards and plugging a discharging hole at the bottom of the stirring barrel when the piston valve core rotates and stirs in the stirring barrel;
and a cylinder body discharge port for communicating the discharge channel is arranged on the valve cylinder body.
Further, the front end bearing and the rear end bearing are both angular contact ball bearings, the inner ring is limited in the front and the rear direction and sleeved outside the piston rod, and the outer ring is embedded into a bearing seat groove correspondingly formed by the piston valve core and limited in the front and the rear direction.
Furthermore, an annular counter bore is formed at the upper end of the valve cylinder body, a necking shaft is formed at the lower end of the discharging seat and is sleeved in the annular counter bore in a matching mode, a sealing box is formed between the side wall of the annular counter bore and the necking shaft, and a sealing box pressing cover is fixed to the end edge of the annular counter bore and presses sealing filler into the sealing box to form the dynamic sealing structure;
a radial sealing ring or gasket is arranged between the upper end surface of the sealing gland and a shaft shoulder behind a necking shaft formed by the discharging seat.
The utility model has the advantages that: the utility model discloses an automatic discharging device for lithium cell thick liquids stirring equipment utilizes automatic discharging system to open or close discharging channel to can realize automated control to the ejection of compact link, change traditional manual ejection of compact mode, improve production efficiency; simultaneously, automatic discharging system's opening or closed position can be located the barrel head, compares with prior art's ball valve, has the possibility of eliminating the stirring dead angle to do benefit to the quality of guaranteeing final product.
Drawings
The invention is further described with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a stirring device according to the present invention;
FIG. 2 is a schematic view of a piston valve core structure;
fig. 3 is an enlarged view of fig. 1 at a.
Detailed Description
As shown in the figure: the automatic discharging device for the lithium battery slurry stirring equipment comprises a discharging channel 401, a discharging opening and a discharging opening, wherein the discharging channel 401 is positioned at the bottom of a stirring barrel of the stirring equipment and is communicated with the discharging opening at the bottom of the stirring barrel; the closing and opening that can be controlled refers to and is used for the automatically controlled or hydraulic pressure, atmospheric pressure etc. to control the equipment of opening or closing discharge channel, is generally automatically controlled (liquid accuse or pneumatic) valve, and the case generally adopts the structure that reciprocates, can be used to the discharge gate of direct shutoff agitator bottom, eliminates the stirring dead angle to realize holistic even stirring, promote product quality, improve production efficiency simultaneously.
The utility model discloses install in the stirring and equip and explain below, the stirring is equipped including:
the stirring barrel 2 is used for accommodating the slurry and is driven to rotate to stir the slurry;
the driving device is used for driving the stirring barrel to rotate;
the automatic discharging device of the utility model is positioned at the bottom of the mixing tank and is provided with a discharging channel 401 communicated with a discharging port at the bottom of the mixing tank, and the discharging channel can be controlled to be closed when the mixing tank rotates and mixes and to be opened when the mixing is completed;
the mixing barrel 2 and the driving device can adopt the structure of the prior art, and are not described again;
in this embodiment, the automatic discharging device further includes:
the valve cylinder body 6 is fixedly arranged, and a valve cylinder hole of the valve cylinder body is communicated with the discharging channel 401; the structure of the valve cylinder body 6 is similar to that of the existing hydraulic cylinder and pneumatic cylinder, and is not described again;
the piston valve core 7 is arranged in the valve cylinder hole and can be controlled to reciprocate along the valve cylinder hole to open or close the discharging channel, and the piston valve core is of a piston type structure and can be driven to move along the valve cylinder hole so as to upwards block the discharging channel and prop against a discharging hole of the stirring barrel as much as possible to complete stirring; the stirring is accomplished and is driven the downstream, moves the discharge gate on valve cylinder hole or the discharging channel after, and the lithium cell thick liquids that the stirring was accomplished are emitted, realize automatic ejection of compact.
In the embodiment, the discharge channel 401 is arranged on the discharge seat 4 fixed at the bottom of the stirring barrel, and the upper end of the valve cylinder body 6 is sealed and rotationally matched with the lower end of the discharge seat through a dynamic sealing structure; the dynamic sealing structure is generally determined according to the matching structure of the discharging seat and the valve cylinder body; the end face mechanical seal (the seal matching structure of the movable ring and the static ring) with pretightening force can be adopted, the packing seal of the packing box structure can also be adopted, the purpose of the utility model can be realized, and the details are not repeated; the discharge valve body can be prevented from following the stirring barrel by adopting a dynamic sealing structure, so that electric control or liquid and gas control discharge is facilitated;
the discharge channel 401 and the valve cylinder hole have the same diameter and are coaxial, so that the piston valve core 7 can move upwards and block the bottom discharge hole when the stirring barrel rotates and stirs, and move downwards to an open discharge position when the stirring is finished; in this structure, piston valve core 7 can be driven gets into discharging channel and seals the discharge gate, and piston valve core 7's top can be handled through the shape, and with the barrel head part of discharge gate coincide, seals the discharge gate completely and eliminates the stirring dead angle when rotatory stirring to do benefit to and guarantee product quality.
In this embodiment, a piston rod 709 is disposed in a rotationally-matched manner with the piston valve core 7; the piston valve core 7 is in rotating fit with the piston rod 709, and when the piston valve core 7 enters the discharging channel 401, the piston valve core can rotate along with the stirring barrel, so that an original dynamic sealing structure between the excircle of the piston valve core and the channel wall is converted into static sealing, the sealing effect is improved, and the service life of the sealing structure is prolonged; meanwhile, the follow-up structure enables the piston valve core and the stirring barrel to form a whole in the stirring process, so that the problem of material leakage caused by friction and creeping cannot occur;
still include piston case drive assembly, include:
a driving cylinder 8 fixedly connected to the valve cylinder 6 and having a driving cylinder hole into which the piston rod 709 extends; as shown in the figure, the valve cylinder body or/and the driving cylinder body is used for forming a shrinkage cavity at the position of the via hole penetrating through the piston rod to be in close clearance fit with the piston rod, and is generally provided with a seal, so that the sealing performance of hydraulic driving is ensured, and the description is omitted;
a drive piston 801 drivingly engaged with the piston rod 709 and located in and driven to reciprocate along the drive cylinder hole;
the structures of the driving cylinder 8 and the driving piston 801 belong to the driving structure in the prior art, as shown in the figure, the driving piston is driven to reciprocate in the driving cylinder by hydraulic pressure or air pressure, so that the piston rod and the piston valve core are driven to reciprocate to complete the closing and opening actions, and the description is omitted here.
In this embodiment, the piston valve body 7 includes:
the outer circle of the piston valve core main body is provided with a valve core sealing piece 705 which is in sealing fit with the valve cylinder hole and the discharging channel, namely the piston valve core 7 enters the valve cylinder hole, the valve core sealing piece 705 is in sealing fit with the valve cylinder hole and enters the discharging channel, and then is in sealing fit with the discharging channel; as shown in the figure, the valve core sealing element is a sealing ring sleeved on the excircle of the piston valve core main body, and a plurality of sealing rings are sleeved along the axial direction to ensure the sealing effect, which is not described herein again;
front end bearing 703 and rear end bearing 707 set up respectively in the both ends of piston case main part and are used for piston case main part and piston rod 709 normal running fit, adopt both ends bearing complex structure around the adoption, form stable rotation support to piston case main part, when guaranteeing sealed effect, still guarantee with the follow-up nature of agitator.
In this embodiment, the piston valve core main body is formed by arranging a plurality of piston units 706 in an axial direction, the end parts of the adjacent piston units 706 are matched through a spigot, and a sealing groove for installing a valve core sealing element is formed at the spigot;
as shown in the figure, a plurality of piston units 706 form a holistic piston case main part along axial arrangement, of course, every piston unit 706's structure is not necessarily the same, different according to connection structure's difference then the structure, carry out axial connection (some piston units are equipped with the bolt hole, adjacent piston unit then is equipped with bolt complex screw hole, no longer repeated here) through the stay bolt between the piston unit in the figure, of course, also can realize the utility model discloses a purpose also together the piston unit pressure through the gland at both ends, no longer describe here;
the adjacent piston units 706 are matched by using the seam allowances, so that good coaxiality positioning is favorably kept, meanwhile, a sealing groove is formed by using the distance between the end edge of the concave seam allowance and the shaft shoulder of the convex seam allowance, the structure is simple, the elastic deformation is reduced in the sleeving process of the valve core sealing element (the Y-shaped sealing ring is adopted in the embodiment), and the normal use of the valve core sealing element is ensured; as shown in the figure, sealing grooves are formed between adjacent piston units and between the piston units and end covers (front and back) of the end parts, corresponding to the seam allowances, respectively, a plurality of sealing grooves are formed in the axial direction and are sleeved in the sealing grooves respectively, and the sealing lip of the sealing Y-shaped sealing ring is higher than the seam allowances of the sealing grooves to form effective sealing.
In this embodiment, a discharge door plate 701 is arranged at the foremost end of the piston valve core main body, and the front end surface of the discharge door plate 701 is a closed plane and is used for moving upwards and plugging a discharge port at the bottom of a stirring barrel when the piston valve core 7 rotates and stirs in the stirring barrel; as shown in the figure, the discharging door plate 701 is in a cylindrical cap shape and is reversely buckled at the front end of the piston valve core main body to form a plane which is used for plugging a discharging port of the stirring barrel and is matched with the barrel bottom, so that the stirring dead angle is eliminated; certainly, the discharging door plate needs to be fixed at the front end in the existing mechanical fixing mode, and details are not described herein;
the valve cylinder body 6 is provided with a cylinder body discharge port 602 used for communicating with a discharge channel, and the discharge port is arranged on the cylinder body and does not need to follow the stirring barrel, so that the production environment is ensured to be good.
In this embodiment, the front end bearing 703 and the rear end bearing 707 are both angular contact ball bearings, an inner ring is respectively limited in the front and rear direction and externally sleeved on the piston rod 709, and an outer ring is respectively embedded in a bearing seat groove correspondingly formed by the piston valve core and is limited in the front and rear direction;
the mounting mode of the angular contact ball bearing is as follows: the outer ring of the front end bearing applies an axial force backwards, the outer ring of the rear end bearing applies an axial force forwards to ensure the axial positioning of the piston unit, and the position is kept when the piston valve core main body moves forwards or backwards, which is not described again;
as shown in the figure, the piston valve core main body is provided with a front end cover 704 and a rear end cover 708, the front end cover 704 is positioned at the front end of the most front end piston unit 706 and is detachably and fixedly connected with the most front end piston unit (such as bolted connection in the figure) and is matched with the most front end piston unit through a spigot, a bearing seat groove for accommodating a front end bearing outer ring is formed between the front end of the male spigot and a sinking platform of the female spigot, and meanwhile, the rear end cover 708 is positioned at the rear end of the most rear end piston unit and is tightly abutted with the most rear end piston unit through the spigot; as shown in the figure, an annular pressure ring is fixedly arranged on the piston rod to press the rear end cover and tightly abut against the piston unit at the rearmost end, meanwhile, a gland is arranged on the rear end cover through a bolt, and the rear end cover and the gland clamp the pressure ring together to form fixation, which is not described again; of course, a bearing seat groove for accommodating the outer ring of the rear end bearing is formed between the front end of the male spigot of the rear end cover and the sunken platform of the female spigot.
In this embodiment, an annular counter bore 601 is formed at the upper end of the valve cylinder body 6, a necking shaft 402 is formed at the lower end of the discharging seat 4 and is in inner sleeve fit with the annular counter bore 601, a sealing gland 10 is formed between the side wall of the annular counter bore 601 and the necking shaft 402, and a sealing gland 12 is fixed at the end edge of the annular counter bore 601 to press sealing filler into the sealing gland 10 to form the dynamic sealing structure; as shown in the figure, the stuffing box structure is adopted to form dynamic seal, so that the sealing effect is better, and the dynamic fit structure of the stuffing box and the dynamic seal is compact;
a radial sealing ring or gasket 11 is arranged between the upper end surface of the sealing box cover 12 and a shaft shoulder behind a necking shaft formed by the discharging seat 4, and is combined with the sealing box 10 to form effective sealing; meanwhile, in general, the material of the sealing ring or the gasket should have self-lubricating property so as to ensure the smoothness of relative rotation of the sealing ring and the gasket.
In this embodiment, the driving device includes:
the driving motor 1 is used for outputting driving power for driving the stirring barrel 2 to rotate;
the transmission assembly is used for transmitting the driving power of the driving motor to the stirring barrel;
the driving motor 1 and the valve cylinder body 6 are respectively fixed on the lower part of the fixed base 5, and the transmission assembly is positioned on the upper part of the fixed base;
as shown in the figure, the power output shaft of the driving motor 1 penetrates through the fixed base 5, the transmission assembly comprises a driving gear 101 (located at the upper part of the fixed base) and a driven gear, the driving gear is arranged on the power output shaft in a transmission fit manner, the driven gear is meshed with the driving gear, the driven gear is simultaneously used as an outer ring of the disc bearing 3 (and a disc bearing with an outer gear ring), an inner ring of the disc bearing 3 is fixed on the fixed base 5 (at least in the circumferential direction), and the outer ring is simultaneously matched with the stirring barrel 2 in a transmission manner and is used for driving the stirring barrel to rotate.
As shown in the figure, a shaft seat hole 501 is formed in the fixed base 5, the discharging seat 4 is rotatably fitted and sleeved in the shaft seat hole 501, an annular flange (which may be integrally formed or detachably connected) is formed at the upper end of the valve cylinder body 6, and the annular flange is installed at the lower part of the fixed base 5 and forms the aforementioned fitting structure with the fixed base 5; the whole structure is simple and compact.
Valve cylinder body 6 is fixed motionless on fixing base 5, and drive cylinder body drive (hydraulic pressure) drive piston forward (upwards) motion drives piston case along the jar hole of valve cylinder body and discharging channel 401 rebound through the piston rod, guarantees that the last plane of ejection of compact door plant 71 flushes with the interior bottom plane of the rotatory agitator 2 of lithium electricity thick liquids, and 9 auto-locks of drive cylinder body carry out the material stirring. During the ejection of compact, 9 back drive piston motions of drive cylinder body, piston valve core 7 moves down, guarantees that the last plane of ejection of compact door plant 71 is less than the discharge gate on the valve cylinder body, accomplishes the ejection of compact through pneumatic diaphragm pump, realizes ejection of compact automation.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (7)
1. The utility model provides an automatic discharging device that is used for stirring of lithium cell thick liquids to equip which characterized in that: the device comprises a discharge channel which is positioned at the bottom of a stirring barrel of stirring equipment and is communicated with a discharge hole at the bottom of the stirring barrel, wherein the discharge channel can be controlled to be closed when the stirring barrel rotates for stirring and to be opened for discharging when the stirring is finished;
further comprising:
the valve cylinder body is fixedly arranged, and a valve cylinder hole of the valve cylinder body is communicated with the discharging channel;
the piston valve core is arranged in the valve cylinder hole and can be controlled to reciprocate along the valve cylinder hole to realize the opening or closing of the discharge channel; the discharge channel is arranged on a discharge seat fixed at the bottom of the stirring barrel, and the upper end of the valve cylinder body is sealed and rotationally matched with the lower end of the discharge seat through a dynamic sealing structure; the discharging channel and the valve cylinder hole are in the same diameter and coaxial, so that the piston valve core can move upwards and block the bottom discharging hole when the stirring barrel rotates and stirs, and can move downwards to an opening discharging position when the stirring is completed.
2. The automatic discharging device for the lithium battery slurry stirring equipment as recited in claim 1, wherein: a piston rod is arranged in a rotating fit with the piston valve core;
still include piston case drive assembly, include:
a drive cylinder fixedly connected to the valve cylinder and having a drive cylinder bore, the piston rod extending into the drive cylinder bore;
and the driving piston is matched with the piston rod in a driving mode and is located in the driving cylinder hole and can be driven to reciprocate along the driving cylinder hole.
3. The automatic discharging device for the lithium battery slurry stirring equipment as recited in claim 1, wherein: the piston valve spool includes:
the outer circle of the piston valve core main body is provided with a valve core sealing piece which is in sealing fit with the valve cylinder hole and the discharge channel;
and the front end bearing and the rear end bearing are respectively arranged at two ends of the piston valve core main body and are used for the piston valve core main body to be in running fit with the piston rod.
4. The automatic discharging device for the lithium battery slurry stirring equipment as recited in claim 3, wherein: the piston valve core main body is formed by arranging a plurality of piston units in the axial direction, the end parts of the adjacent piston units are matched through a spigot, and the spigot is positioned to form a sealing groove for installing a valve core sealing element.
5. The automatic discharging device for lithium battery slurry stirring equipment as recited in claim 4, wherein: the discharge door plate is arranged at the foremost end of the piston valve core main body, and the front end surface of the discharge door plate is a closed plane and is used for moving upwards and plugging a discharge hole at the bottom of the stirring barrel when the piston valve core rotates and stirs in the stirring barrel;
and a cylinder body discharge port for communicating the discharge channel is arranged on the valve cylinder body.
6. The automatic discharging device for the lithium battery slurry stirring equipment as recited in claim 3, wherein: the front end bearing and the rear end bearing are both angular contact ball bearings, the inner ring is respectively limited in the front and the rear direction and sleeved outside the piston rod, and the outer ring is respectively embedded into a bearing seat groove correspondingly formed by the piston valve core and is limited in the front and the rear direction.
7. The automatic discharging device for the lithium battery slurry stirring equipment as recited in claim 2, wherein: an annular counter bore is formed at the upper end of the valve cylinder body, a necking shaft is formed at the lower end of the discharging seat and is sleeved in the annular counter bore in a matching mode, a sealing box is formed between the side wall of the annular counter bore and the necking shaft, and a sealing box pressing cover is fixed to the end edge of the annular counter bore and presses sealing packing into the sealing box to form the dynamic sealing structure;
a radial sealing ring or gasket is arranged between the upper end surface of the sealing gland and a shaft shoulder behind the necking shaft formed by the discharging seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221324935.1U CN218107579U (en) | 2022-05-28 | 2022-05-28 | Automatic discharging device for lithium battery slurry stirring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221324935.1U CN218107579U (en) | 2022-05-28 | 2022-05-28 | Automatic discharging device for lithium battery slurry stirring equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218107579U true CN218107579U (en) | 2022-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221324935.1U Active CN218107579U (en) | 2022-05-28 | 2022-05-28 | Automatic discharging device for lithium battery slurry stirring equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218107579U (en) |
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2022
- 2022-05-28 CN CN202221324935.1U patent/CN218107579U/en active Active
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