CN210883967U - A cement finished product conveyor for cement manufacture - Google Patents

A cement finished product conveyor for cement manufacture Download PDF

Info

Publication number
CN210883967U
CN210883967U CN201921393449.3U CN201921393449U CN210883967U CN 210883967 U CN210883967 U CN 210883967U CN 201921393449 U CN201921393449 U CN 201921393449U CN 210883967 U CN210883967 U CN 210883967U
Authority
CN
China
Prior art keywords
bottom plate
conveying pipe
cement
pipe
conveyer pipe
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.)
Active
Application number
CN201921393449.3U
Other languages
Chinese (zh)
Inventor
林永飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Satisfactory Cement Co ltd
Original Assignee
Shaanxi Satisfactory Cement Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shaanxi Satisfactory Cement Co ltd filed Critical Shaanxi Satisfactory Cement Co ltd
Priority to CN201921393449.3U priority Critical patent/CN210883967U/en
Application granted granted Critical
Publication of CN210883967U publication Critical patent/CN210883967U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The utility model discloses a cement finished product conveyor for cement manufacture, concretely relates to cement manufacture field, comprising a base plate, bottom plate top center department rotates and is connected with first conveyer pipe, the one end that bottom plate was kept away from to first conveyer pipe rotates and is connected with the second conveyer pipe, the both ends of first switch and second conveyer pipe are provided with discharge gate and feed inlet respectively, bottom plate top one end fixed mounting has the feeding funnel, first conveyer pipe is close to the feed inlet of bottom plate one end and the bottom intercommunication of feeding funnel, be provided with adjustment control mechanism between first conveyer pipe and the second conveyer pipe, the bottom of bottom plate is provided with the moving positioning mechanism. The utility model discloses a set up two oil pumps and be first pneumatic cylinder and second pneumatic cylinder fuel feeding respectively to the realization is controlled the flexible of first pneumatic cylinder and second pneumatic cylinder, and then has made things convenient for the output position regulation and control when cement powder transports, has improved conveyor's adjustability and practicality.

Description

A cement finished product conveyor for cement manufacture
Technical Field
The utility model relates to a cement manufacture field, more specifically say, the utility model relates to a cement finished product conveyor for cement manufacture.
Background
Cement, powdered hydraulic inorganic cementing material. The cement powder is added with water and stirred to form slurry which can be hardened in the air or in water, sand, stone and other materials can be firmly cemented together, and after the cement is produced into finished product powder, the finished product powder is delivered out of a factory in a bagged mode or a bulk mode, and because the cement has heavy weight, the cement powder produced can be conveyed to a conveying device during bulk storage or transportation, so that the labor intensity is reduced.
However, when the existing conveying device is actually used, due to the simple structure, the final output position cannot be quickly and effectively regulated, and the whole equipment needs to be moved when the regulation is needed, so that the existing conveying device is very inconvenient.
SUMMERY OF THE UTILITY MODEL
In order to overcome prior art's above-mentioned defect, the embodiment of the utility model provides a cement finished product conveyor for cement manufacture, rotation between rotation connection and first conveyer pipe and the bottom plate between through setting up first conveyer pipe and the second conveyer pipe is connected, and communicate the two with the hose, the rethread sets up two oil pumps and is first pneumatic cylinder and second pneumatic cylinder fuel feeding respectively, the realization is controlled the flexible of first pneumatic cylinder and second pneumatic cylinder, and then output position when having made things convenient for the cement powder transportation regulates and control, with the problem of proposing in solving above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a cement finished product conveying device for cement production comprises a bottom plate, wherein a first conveying pipe is rotatably connected to the center of the top of the bottom plate, one end, far away from the bottom plate, of the first conveying pipe is rotatably connected with a second conveying pipe, a discharge hole and a feed hole are formed in two ends of a first switch and the second conveying pipe respectively, a feed hopper is fixedly mounted at one end of the top of the bottom plate, the feed hole, close to one end of the bottom plate, of the first conveying pipe is communicated with the bottom of the feed hopper, an adjusting control mechanism is arranged between the first conveying pipe and the second conveying pipe, and a moving and positioning mechanism is arranged at the bottom of the;
the adjusting and controlling mechanism comprises an upper sleeve frame, the outer portion, away from one end of the bottom plate, of the first conveying pipe is arranged in an upper sleeve frame fixing sleeve, a lower sleeve frame is arranged on the outer portion, close to one end of the first conveying pipe, of the second conveying pipe, the lower sleeve frame is connected with the upper sleeve frame in a rotating mode, one end, away from the bottom plate, of the first conveying pipe is connected with a first hydraulic cylinder in a rotating mode, one end, away from the first conveying pipe, of the first hydraulic cylinder is connected with the middle portion of the second conveying pipe in a rotating mode, the top of the bottom plate is located on one side, away from the feeding hopper, of the first conveying pipe, is connected with a second hydraulic cylinder in.
In a preferred embodiment, the packing auger is connected to the inside of first conveyer pipe and feed inlet all rotates, the outside fixed mounting of one end that first conveyer pipe and feed inlet kept away from each other has the motor, the transmission is connected between motor and the packing auger, motor and external power source electric connection.
In a preferred embodiment, an oil tank is fixedly mounted at the top of the bottom plate, two oil pumps are fixedly mounted at the top of the oil tank, a first switch and a second switch are respectively fixedly mounted at the tops of the two oil pumps, an oil pipe is fixedly connected to the outside of the oil pumps, and the two oil pumps are respectively electrically connected with an external power supply through the first switch and the second switch.
In a preferred embodiment, the oil pump mounted with the first switch is communicated with the first hydraulic cylinder through an oil pipe, the other oil pump is communicated with the second hydraulic cylinder through an oil pipe, and both oil pumps are communicated with an oil tank.
In a preferred embodiment, the first conveying pipe is uniformly provided with supporting blocks at the outside, and the bottom of the discharge hole of the second conveying pipe is fixedly provided with a bulk material hopper.
In a preferred embodiment, a hose is sleeved between the discharge port at one end of the first conveying pipe and the feed port at one end of the second conveying pipe, two ends of the hose are respectively sleeved with a lantern ring in a rotating manner, and the lantern rings are respectively sleeved with the corresponding discharge port and the corresponding feed port in a threaded manner.
In a preferred embodiment, the mobile positioning mechanism comprises four threaded rods, the four threaded rods are respectively sleeved inside the four corners of the bottom plate in a threaded manner, the bottoms of the threaded rods are rotatably sleeved with the pressure pads, and the tops of the threaded rods are fixedly sleeved with the rotating disc.
In a preferred embodiment, wheels are fixedly mounted at the edges of the bottom plate.
The utility model discloses a technological effect and advantage:
1. the utility model discloses a set up the rotation between first conveyer pipe and the second conveyer pipe and the rotation between first conveyer pipe and the bottom plate is connected, and communicate the two with the hose, and then supply oil for first pneumatic cylinder and second pneumatic cylinder respectively through setting up two oil pumps, the break-make electricity of oil pump is controlled through first switch and second switch, in order to realize the flexible control to first pneumatic cylinder and second pneumatic cylinder, thereby drive the rotation of second conveyer pipe and first conveyer pipe respectively, and then output position regulation and control when having made things convenient for cement powder to transport, the staff uses the operation, compare with prior art, very big improvement conveyor's adjustability and practicality;
2. the utility model discloses an utilize bottom plate four corners department threaded connection's threaded rod, when needs are fixed the device, rotate the carousel at threaded rod top to drive the threaded rod and rotate, and then utilize the threaded connection of threaded rod and bottom plate, make the threaded rod drive the pressure pad of bottom and constantly descend, and finally with ground contact, realize the support to the device, with the stability that improves the device removal, compare with prior art, very big improvement the convenience and the stability that the device removed.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the adjusting and controlling mechanism of the present invention.
Fig. 3 is an enlarged view of a portion B of fig. 2 according to the present invention.
Fig. 4 is an enlarged view of the structure of the portion a of fig. 1 according to the present invention.
Fig. 5 is a schematic structural diagram of the mobile positioning mechanism of the present invention.
The reference signs are: the device comprises a base plate 1, a mobile positioning mechanism 2, a hopper 3, an oil pipe 4, a supporting block 5, a first conveying pipe 6, an adjusting control mechanism 7, an upper sleeve frame 8, a discharge port 9, a first hydraulic cylinder 10, a feed port 11, a second conveying pipe 12, a bulk material hopper 13, a lower sleeve frame 14, a hose 15, a second hydraulic cylinder 16, a first switch 17, a second switch 18, a rotary disc 19, a threaded rod 20, a pressure pad 21, an oil tank 22, an oil pump 23, a motor 24, a wheel 25, a packing auger 26 and a collar 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-5, the utility model provides a cement finished product conveying device for cement production, including bottom plate 1, the center of the top of bottom plate 1 is connected with first conveyer pipe 6 in a rotating manner, the end of first conveyer pipe 6 far away from bottom plate 1 is connected with second conveyer pipe 12 in a rotating manner, the two ends of first switch 17 and second conveyer pipe 12 are respectively provided with discharge port 9 and feed port 11, one end of the top of bottom plate 1 is fixedly provided with hopper 3, feed port 11 of first conveyer pipe 6 near one end of bottom plate 1 is communicated with the bottom of hopper 3, adjusting control mechanism 7 is arranged between first conveyer pipe 6 and second conveyer pipe 12, and the bottom of bottom plate 1 is provided with mobile positioning mechanism 2;
the adjusting and controlling mechanism 7 comprises an upper sleeve frame 8, the upper sleeve frame 8 is fixedly sleeved outside one end of the first conveying pipe 6, which is far away from the bottom plate 1, a lower sleeve frame 14 is fixedly sleeved outside one end of the second conveying pipe 12, which is near to the first conveying pipe 6, the lower sleeve frame 14 is rotatably connected with the upper sleeve frame 8, one end of the first conveying pipe 6, which is far away from the bottom plate 1, is rotatably connected with a first hydraulic cylinder 10, one end of the first hydraulic cylinder 10, which is far away from the first conveying pipe 6, is rotatably connected with the middle part of the second conveying pipe 12, one side of the top of the bottom plate 1, which is far away from the hopper 3, is rotatably connected with a second hydraulic cylinder 16, and the top of the second hydraulic cylinder 16 is rotatably connected with the middle part of;
the packing auger 26 is rotatably connected inside the first conveying pipe 6 and the feeding port 11, the motor 24 is fixedly installed outside one end, away from each other, of the first conveying pipe 6 and the feeding port 11, the motor 24 is in transmission connection with the packing auger 26, the motor 24 is electrically connected with an external power supply, and further the packing auger 26 is driven to rotate by the motor 24 so as to realize the transmission of cement powder;
an oil tank 22 is fixedly mounted at the top of the base plate 1, two oil pumps 23 are fixedly mounted at the top of the oil tank 22, a first switch 17 and a second switch 18 are respectively fixedly mounted at the tops of the two oil pumps 23, an oil pipe 4 is fixedly connected to the outside of the oil pumps 23, the two oil pumps 23 are respectively electrically connected with an external power supply through the first switch 17 and the second switch 18, and the two oil pumps 23 are further controlled to operate through the first switch 17 and the second switch 18;
the oil pump 23 provided with the first switch 17 is communicated with the first hydraulic cylinder 10 through the oil pipe 4, the other oil pump 23 is communicated with the second hydraulic cylinder 16 through the oil pipe 4, and both the oil pumps 23 are communicated with the oil tank 22, so that the first switch 17 can be controlled to control the first hydraulic cylinder 10 to stretch, the second switch 18 is controlled to control the second hydraulic cylinder 16 to stretch, and the control on the whole change of the device is realized;
the supporting blocks 5 are uniformly arranged outside the first conveying pipe 6, and the bulk material hopper 13 is fixedly arranged at the bottom of the discharge hole 9 of the second conveying pipe 12, so that the oil pipe 4 can be arranged on the supporting blocks 5, and the falling of cement powder is facilitated;
a hose 15 is sleeved between the discharge port 9 at one end of the first conveying pipe 6 and the feed port 11 at one end of the second conveying pipe 12, two ends of the hose 15 are respectively sleeved with a lantern ring 27 in a rotating manner, and the lantern rings 27 are respectively sleeved with the corresponding discharge port 9 and the corresponding feed port 11 in a threaded manner, so that the first conveying pipe 6 is flexibly communicated with the second conveying pipe 12, and the hose 15 is convenient to disassemble and replace;
the implementation mode is specifically as follows: the produced cement powder is guided into the feeding hopper 3 and automatically falls into one end of the first conveying pipe 6, the auger 26 is driven by the motor 24 to rotate, the produced cement powder is continuously conveyed into the second conveying pipe 12 through the hose 15 and finally falls out from the bulk cargo hopper 13, the first conveying pipe 6 is hinged with the bottom plate 1 through the second conveying pipe 12, the position and the distance of conveying of the device can be conveniently controlled through the flexible connection of the hose 15, oil is respectively supplied to the first hydraulic cylinder 10 and the second hydraulic cylinder 16 through the two oil pumps 23, the on-off of the oil pumps 23 is controlled through the first switch 17 and the second switch 18, so that the telescopic control of the first hydraulic cylinder 10 and the second hydraulic cylinder 16 is realized, the rotation of the second conveying pipe 12 and the first conveying pipe 6 is respectively driven, and the output position regulation and control during cement powder conveying are further facilitated, the operation of staff's use has greatly made things convenient for, and this embodiment has specifically solved the problem that can't effectively regulate and control the output position of device among the prior art.
As shown in fig. 1 and 5, the utility model provides a cement finished product conveying device for cement production, the mobile positioning mechanism 2 comprises four threaded rods 20, the four threaded rods 20 are respectively sleeved inside the four corners of the bottom plate 1 in a threaded manner, the bottom of the threaded rod 20 is rotatably sleeved with a pressure pad 21, and the top of the threaded rod 20 is fixedly sleeved with a turntable 19;
wheels 25 are fixedly arranged at the edge of the bottom plate 1, so that the device is convenient to move integrally;
the implementation mode is specifically as follows: through bottom installation wheel 25 at bottom plate 1, in order to make things convenient for the removal of whole device, and utilize bottom plate 1 four corners department threaded connection's threaded rod 20, when needs fix the device, the carousel 19 at threaded rod 20 top rotates, rotate with driving threaded rod 20, and then utilize threaded rod 20 and bottom plate 1's threaded connection, make threaded rod 20 drive the pressure pad 21 of bottom and constantly descend, and finally with ground contact, the realization is to the support of device, in order to improve the stability that the device removed, this embodiment has specifically solved and has carried out quick effective fixed problem to the equipment that removes among the prior art.
The utility model discloses the theory of operation:
referring to the attached drawings 1-5 of the specification, the first conveying pipe 6 and the second conveying pipe 12 are connected in a rotating mode, the first conveying pipe 6 is connected with the bottom plate 1 in a rotating mode, the first conveying pipe 6 and the second conveying pipe 12 are communicated through a hose 15, two oil pumps 23 are arranged to supply oil to the first hydraulic cylinder 10 and the second hydraulic cylinder 16 respectively, the first switch 17 and the second switch 18 are used for controlling the on-off of the oil pumps 23, the first hydraulic cylinder 10 and the second hydraulic cylinder 16 are controlled to stretch and retract, the second conveying pipe 12 and the first conveying pipe 6 are driven to rotate respectively, the output position of cement powder in transportation is convenient to regulate and control, the use and the operation of workers are convenient, and the adjustability and the practicability of the conveying device are improved;
referring to the attached drawings 1 and 5 of the specification, when the device needs to be fixed, the threaded rod 20 connected with the four corners of the bottom plate 1 through threads is used, the rotary table 19 at the top of the threaded rod 20 is rotated to drive the threaded rod 20 to rotate, and then the threaded rod 20 is connected with the bottom plate 1 through threads, so that the threaded rod 20 drives the pressure pad 21 at the bottom to continuously descend and finally contact with the ground, the support for the device is realized, the stability of the device in moving is improved, and the convenience and the stability of the device in moving are improved.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;
and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A cement finished product conveyor for cement manufacture, includes bottom plate (1), its characterized in that: a first conveying pipe (6) is rotatably connected to the center of the top of the bottom plate (1), one end, far away from the bottom plate (1), of the first conveying pipe (6) is rotatably connected with a second conveying pipe (12), a discharge hole (9) and a feed hole (11) are respectively formed in two ends of a first switch (17) and the second conveying pipe (12), a feed hopper (3) is fixedly mounted at one end of the top of the bottom plate (1), the feed hole (11), close to one end of the bottom plate (1), of the first conveying pipe (6) is communicated with the bottom of the feed hopper (3), an adjusting control mechanism (7) is arranged between the first conveying pipe (6) and the second conveying pipe (12), and a mobile positioning mechanism (2) is arranged at the bottom of the bottom plate (1);
the adjusting control mechanism (7) comprises an upper sleeve frame (8), the upper sleeve frame (8) is fixedly sleeved outside one end of the first conveying pipe (6) far away from the bottom plate (1), a lower sleeve frame (14) is fixedly sleeved outside one end of the second conveying pipe (12) close to the first conveying pipe (6), the lower sleeve frame (14) is rotationally connected with the upper sleeve frame (8), one end of the first conveying pipe (6) far away from the bottom plate (1) is rotationally connected with a first hydraulic cylinder (10), one end of the first hydraulic cylinder (10) far away from the first conveying pipe (6) is rotatably connected with the middle part of the second conveying pipe (12), the top of the bottom plate (1) is positioned at one side of the first conveying pipe (6) far away from the feeding hopper (3) and is rotationally connected with a second hydraulic cylinder (16), the top of the second hydraulic cylinder (16) is rotatably connected with the middle part of the first conveying pipe (6).
2. A cement product conveying apparatus for cement production according to claim 1, wherein: the inside of first conveyer pipe (6) and feed inlet (11) all rotates and is connected with auger (26), the outside fixed mounting of one end that first conveyer pipe (6) and feed inlet (11) kept away from each other has motor (24), the transmission is connected between motor (24) and auger (26), motor (24) and external power source electric connection.
3. A cement product conveying apparatus for cement production according to claim 1, wherein: the top fixed mounting of bottom plate (1) has oil tank (22), the top fixed mounting of oil tank (22) has two oil pumps (23), two the top of oil pump (23) is fixed mounting respectively has first switch (17) and second switch (18), outside fixedly connected with oil pipe (4) of oil pump (23), two oil pump (23) are respectively through first switch (17) and second switch (18) and external power source electric connection.
4. A cement product conveying apparatus for cement production according to claim 3, wherein: install oil pump (23) of first switch (17) pass through oil pipe (4) and first pneumatic cylinder (10) intercommunication, another oil pump (23) pass through oil pipe (4) and second pneumatic cylinder (16) intercommunication, and two oil pump (23) all communicate with oil tank (22).
5. A cement product conveying apparatus for cement production according to claim 1, wherein: supporting blocks (5) are uniformly installed outside the first conveying pipe (6), and a bulk material hopper (13) is fixedly installed at the bottom of a discharge hole (9) of the second conveying pipe (12).
6. A cement product conveying apparatus for cement production according to claim 1, wherein: hose (15) have been cup jointed between discharge gate (9) of first conveyer pipe (6) one end and feed inlet (11) of second conveyer pipe (12) one end, the both ends of hose (15) are all rotated the cover and are equipped with lantern ring (27), lantern ring (27) cup joint with discharge gate (9) and feed inlet (11) screw thread that correspond respectively.
7. A cement product conveying apparatus for cement production according to claim 1, wherein: the movable positioning mechanism (2) comprises four threaded rods (20), the four threaded rods (20) are respectively in threaded sleeve connection with the inner portions of four corners of the bottom plate (1), the bottom of each threaded rod (20) is rotated and sleeved with a pressure pad (21), and the top of each threaded rod (20) is fixedly sleeved with a turntable (19).
8. A cement product conveying apparatus for cement production according to claim 1, wherein: wheels (25) are fixedly mounted at the edge of the bottom plate (1).
CN201921393449.3U 2019-08-26 2019-08-26 A cement finished product conveyor for cement manufacture Active CN210883967U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921393449.3U CN210883967U (en) 2019-08-26 2019-08-26 A cement finished product conveyor for cement manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921393449.3U CN210883967U (en) 2019-08-26 2019-08-26 A cement finished product conveyor for cement manufacture

Publications (1)

Publication Number Publication Date
CN210883967U true CN210883967U (en) 2020-06-30

Family

ID=71331820

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921393449.3U Active CN210883967U (en) 2019-08-26 2019-08-26 A cement finished product conveyor for cement manufacture

Country Status (1)

Country Link
CN (1) CN210883967U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111776638A (en) * 2020-07-20 2020-10-16 芜湖华洁环保设备有限公司 Spiral conveyer with adjustable conveyer angle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111776638A (en) * 2020-07-20 2020-10-16 芜湖华洁环保设备有限公司 Spiral conveyer with adjustable conveyer angle

Similar Documents

Publication Publication Date Title
CN105668255A (en) Exterior wall tile stacking and boxing device
CN210883967U (en) A cement finished product conveyor for cement manufacture
CN108750543A (en) A kind of adjustable embedded scraper transporter of scraper plate
CN207030273U (en) A kind of true mineral varnish production apparatus for feeding
US3625487A (en) Placing of concrete
CN103159393A (en) Nut-lead screw type motion device for bottom material distribution of quartz sand
CN213161275U (en) Semi-liquid accuse hopper batcher of folded cascade
CN204716285U (en) A kind of ribbon conveyer random angle turning device
CN212558072U (en) Feeding device for food processing
CN210527644U (en) Raw material conveying device for glass bottle production
CN218189822U (en) Environment-friendly cement grinding device
CN220316400U (en) Edging machine feed arrangement with limit structure
CA2996003C (en) System and method for delivering proppant to a blender
CN211541843U (en) Discharging device for concrete production
CN216037064U (en) Feedway is used in cement manufacture
CN215541195U (en) Double-roller sand making machine with hydraulic pressure capable of being automatically adjusted
CN219791501U (en) Lubricating device for screw conveyor
CN109701720A (en) A kind of automatic crushing device of construction site multi-angle regulation
CN213198368U (en) Material weighing and mixing equipment
CN220725098U (en) Water conservancy construction feeding device
CN218661912U (en) Tantalum powder transfer device
CN214986205U (en) Bagging and conveying device for rice production
CN217126062U (en) Inclined feeding equipment
CN208593507U (en) A kind of horizontal bag type package machine
CN215664228U (en) Sintering color sand subpackages automatics

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant