CN114904760A - Screening sand device for construction - Google Patents

Screening sand device for construction Download PDF

Info

Publication number
CN114904760A
CN114904760A CN202210448975.5A CN202210448975A CN114904760A CN 114904760 A CN114904760 A CN 114904760A CN 202210448975 A CN202210448975 A CN 202210448975A CN 114904760 A CN114904760 A CN 114904760A
Authority
CN
China
Prior art keywords
plate
building construction
sand
screening
rotatably connected
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.)
Granted
Application number
CN202210448975.5A
Other languages
Chinese (zh)
Other versions
CN114904760B (en
Inventor
郑慧君
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.)
Dragon Totem Technology Hefei Co ltd
Xinjiang Jiutai Hengxiang Construction Engineering Co.,Ltd.
Original Assignee
Chengde Petroleum College
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 Chengde Petroleum College filed Critical Chengde Petroleum College
Priority to CN202210448975.5A priority Critical patent/CN114904760B/en
Publication of CN114904760A publication Critical patent/CN114904760A/en
Application granted granted Critical
Publication of CN114904760B publication Critical patent/CN114904760B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention relates to the technical field of building construction, and discloses a sand screening device for building construction, which comprises a bottom plate, a jacking mechanism and a screening mechanism, wherein the jacking mechanism is arranged on the bottom plate; the screening mechanism comprises a supporting plate fixedly connected with the bottom plate, a first rotating seat is arranged at one end, far away from the ground, of the supporting plate, and the first rotating seat is rotatably connected with the sieve plate; jacking mechanism, including setting up in the spout at bottom plate middle part, spout sliding connection slider, the one end that the slider is close to the sieve is equipped with the fixed plate, and the both sides sliding connection of fixed plate has the guide bar, and the one end that the guide bar is close to the sieve is equipped with the layer board, is equipped with the spring between layer board and the fixed plate, is equipped with on the layer board with screen cloth complex top. The sand screening device is suitable for building construction, active screening treatment of sand is achieved through left-right swinging of the screen plate on the screening mechanism, and the ejector is arranged in the device, so that screening efficiency can be further improved, the device only needs to continuously pour the sand, and more working efficiency is improved compared with the traditional manual sand screening.

Description

Screening sand device for construction
Technical Field
The invention relates to the technical field of building construction, in particular to a sand screening device for building construction.
Background
With the rapid development of economy and the continuous progress of social science and technology in China, the construction sites are more in China at present, sand is an essential technical raw material in the construction sites, and the sand is used for wall building and other processes on the construction sites.
The sand needs to be screened before being used, an inclined screen plate is usually supported on the ground, and constructors pour the sand on the screen plate to perform manual sand screening operation, so that the efficiency of the whole sand screening process is low, and the improvement is needed.
Disclosure of Invention
The invention provides a sand screening device for building construction, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a sand screening device for building construction comprises a bottom plate, a jacking mechanism and a screening mechanism;
the screening mechanism comprises a supporting plate fixedly connected with the bottom plate, a first rotating seat is arranged at one end, far away from the ground, of the supporting plate and is rotatably connected with the sieve plate, a screen is arranged in the middle of the sieve plate, the middle of the supporting plate is rotatably connected with a rotating shaft, a rotating disc is arranged at one end, close to the center of the device, of the rotating shaft, the outer side of the rotating disc is rotatably connected with one end of a supporting rod, and the other end of the supporting rod is rotatably connected with the sieve plate;
jacking mechanism, including setting up in the spout at bottom plate middle part, spout sliding connection slider, the one end that the slider is close to the sieve is equipped with the fixed plate, and the both sides sliding connection of fixed plate has the guide bar, and the one end that the guide bar is close to the sieve is equipped with the layer board, is equipped with the spring between layer board and the fixed plate, is equipped with on the layer board with screen cloth complex top.
In a preferred embodiment of the present invention, the screen is in a relaxed state.
As a preferred technical scheme of the invention, two sides of the supporting plate are provided with supporting seats, the supporting seats are rotatably connected with the top wheel, and two sides of the sieve plate are provided with wave-shaped base plates matched with the top wheel.
As a preferred technical solution of the present invention, the supporting plate is provided with a rotation driving assembly for driving the rotation shaft to rotate.
As a preferred technical solution of the present invention, the rotation driving assembly includes a second rotation seat disposed on the bottom plate, the second rotation seat is rotatably connected to the cylinder, a piston rod of the cylinder is rotatably connected to one end of the rotation rod, and the other end of the rotation rod is fixedly connected to an end of the rotation shaft.
As a preferable technical scheme of the invention, a displacement driving component for driving the sliding block to move is arranged on the bottom plate.
As a preferable technical scheme of the invention, the displacement driving assembly comprises a driving motor arranged on the bottom plate, an output shaft of the driving motor is fixedly connected with the end part of a screw rod, and the screw rod is in threaded connection with a sliding block.
As a preferable technical scheme of the invention, the screw rod is provided with a double-helix chute with opposite rotation directions and equal thread pitch.
The invention has the following advantages:
the sand screening device is suitable for building construction, active screening treatment of sand is achieved through left-right swinging of the screen plate on the screening mechanism, and the ejector is arranged in the device, so that screening efficiency can be further improved, the device only needs to continuously pour the sand, and more working efficiency is improved compared with the traditional manual sand screening.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a sand sieving device for building construction.
Fig. 2 is a front view of a sand sieving apparatus for construction.
Fig. 3 is a schematic structural view of a screening mechanism in a sand screening device for building construction.
Fig. 4 is a schematic structural view of a jacking mechanism in a sand screening device for building construction.
Fig. 5 is a right side view of a jack-up mechanism in a sand sieving apparatus for construction.
In the figure: 1. a base plate; 2. a bearing seat; 3. a screw rod; 4. a drive motor; 5. a chute; 6. a slider; 7. a fixing plate; 8. a guide bar; 9. a spring; 10. a support plate; 11. ejecting the head; 12. a supporting seat; 13. a top wheel; 14. a support plate; 15. a second rotating base; 16. a cylinder; 17. rotating the rod; 18. a rotating shaft; 19. rotating the disc; 20. a support bar; 21. a sieve plate; 22. a first rotating base; 23. screening a screen; 24. a waved backing plate; 25. a jack-up mechanism; 26. a screening mechanism; 27. a rotary drive assembly; 28. a displacement drive assembly.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In one embodiment, referring to fig. 1-5, a sand screening device for building construction comprises a bottom plate 1, a jacking mechanism 25 and a screening mechanism 26;
the screening mechanism 26 comprises a supporting plate 14 fixedly connected with the bottom plate 1, wherein one end, far away from the ground, of the supporting plate 14 is provided with a first rotating seat 22, the first rotating seat 22 is rotatably connected with a screen plate 21, the middle part of the screen plate 21 is provided with a screen 23, the middle part of the supporting plate 14 is rotatably connected with a rotating shaft 18, one end, close to the center of the device, of the rotating shaft 18 is provided with a rotating disc 19, the outer side of the rotating disc 19 is rotatably connected with one end of a supporting rod 20, the other end of the supporting rod 20 is rotatably connected with the screen plate 21, the supporting plate 14 is arranged on the front side and the rear side of the middle part of the upper surface of the bottom plate 1, the upper end of the supporting plate 14 is provided with the first rotating seat 22, and the first rotating seat 22 is rotatably connected with the front side and the rear side of the middle part of the screen plate 21, so that the screen plate 21 can swing left and right relative to the first rotating seat 22;
jack-up mechanism 25, including setting up in spout 5 at bottom plate 1 middle part, 5 sliding connection sliders 6 in spout, slider 6 is equipped with fixed plate 7 near the one end of sieve 21, the both sides sliding connection of fixed plate 7 has guide bar 8, the one end that guide bar 8 is close to sieve 21 is equipped with layer board 10, be equipped with spring 9 between layer board 10 and the fixed plate 7, be equipped with on layer board 10 with screen cloth 23 complex top 11, the setting of orientation is at the middle part of bottom plate 1 about spout 5, slider 6 can be along 5 horizontal slideings of spout, and towards setting around top 11, screen cloth 23 is withstood on top 11's upper portion, screen cloth 23 is in lax state, that is to say, top 11 can upwards jack-up screen cloth 23's middle part, make the impurity of blocking in the screen cloth 23 can be quick throw off.
In one aspect of this embodiment, the supporting plate 10 is provided with supporting seats 12 on both sides thereof, the supporting seats 12 are rotatably connected to the top wheels 13, and the sieve plate 21 is provided with waved backing plates 24 on both sides thereof for cooperating with the top wheels 13. The wavy backing plate 24 is a backing plate with a large number of bulges and is arranged on the front side and the rear side of the lower surface of the sieve plate 21, when the supporting plate 10 moves upwards, the top wheel 13 can be in contact with the wavy backing plate 24, and when the top wheel 13 moves on the wavy backing plate 24, the top wheel 13 can vibrate quickly, so that the top head 11 vibrates quickly, the screen 23 vibrates through the top head 11, and the screening effect of the screen 23 is improved.
In one aspect of the present embodiment, the supporting plate 14 is provided with a rotation driving assembly 27 for driving the rotation shaft 18 to rotate; the rotary driving assembly 27 comprises a second rotary seat 15 arranged on the bottom plate 1, the second rotary seat 15 is rotatably connected with the cylinder 16, a piston rod of the cylinder 16 is rotatably connected with one end of the rotary rod 17, and the other end of the rotary rod 17 is fixedly connected with the end part of the rotary shaft 18. The second rotates the base 15 setting in the bottom of backup pad 14, and the bottom and the second of cylinder 16 rotate the base 15 and rotate and be connected, and when the piston rod of cylinder 16 stretched out or shrink, cylinder 16 can drive dwang 17 and rotate to make dwang 17 drive pivot 18 and rotate, rolling disc 19 will promote the sieve 21 through bracing piece 20 and carry out the swing about first seat 22 that rotates this moment.
In one aspect of the present embodiment, the base plate 1 is provided with a displacement driving assembly 28 for driving the slider 6 to move. The displacement driving assembly 28 comprises a driving motor 4 arranged on the bottom plate 1, an output shaft of the driving motor 4 is fixedly connected with the end part of the screw rod 3, and the screw rod 3 is in threaded connection with the sliding block 6. Driving motor 4 and lead screw 3 set up the lower surface at bottom plate 1 to set up bearing frame 2 in the both sides of spout 5, bearing frame 2 rotates and connects lead screw 3, and lead screw 3 can drive the slider 6 and remove about. And the screw rod 3 is provided with a double-spiral chute 5 with opposite rotation directions and equal thread pitch. Therefore, when the screw rod 3 rotates in a fixed direction, the sliding block 6 can move left and right spontaneously, so that the driving motor 4 only needs to keep one fixed direction to rotate, frequent reversing operation of the driving motor 4 is reduced, and the service life of the driving motor 4 is prolonged.
This embodiment is at the implementation in-process, can set up the cushion on bottom plate 1 and so on, make stable the placing subaerial of whole device, and keep bottom plate 1's lower surface to have sufficient space to place driving motor 4, start driving motor 4 this moment, driving motor 4's output shaft drives lead screw 3 and rotates, lead screw 3 drives slider 6 and removes, under the effect of spring 9, top 11 can hug closely the lower surface at screen cloth 23, and top 11 can remove, the in-process push wheel 13 that removes makes the continuous vibrations from top to bottom of top 11 with the cooperation of wave backing plate 24.
Sand to be screened is poured into the screen 23 on the screen plate 21, at this time, the air cylinder 16 is started, the piston rod of the air cylinder 16 continuously extends and contracts, so that the screen plate 21 swings left and right relative to the first rotating seat 22, at this time, the sand rolls on the screen 23, and the sand meeting the particle requirement in the rolling process passes through the screen 23 to complete the screening operation. And plug 11 is when contacting with screen cloth 23, and the arch of production can reciprocate the sand of screen cloth 23 top, the effect of further improvement screening, and consequently the device is at the in-process of work, and the sand that satisfies the screening requirement can fall in the below of screen cloth 23 also be the middle part of device, and what can't satisfy the size requirement just falls to the both sides of device along with sieve 21 landing to accomplished the processing of screening, operating personnel only need constantly add the sand can.
The sand screening device is suitable for a sand screening device for building construction, active screening treatment of sand is achieved through left-right swinging of the screen plate 21 on the screening mechanism 26, and the ejector 11 is arranged in the device, so that screening efficiency can be further improved, the device only needs to continuously pour the sand, and more working efficiency is improved compared with the traditional manual sand screening.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (8)

1. A sand screening device for building construction is characterized by comprising a bottom plate, a jacking mechanism and a screening mechanism;
the screening mechanism comprises a supporting plate fixedly connected with the bottom plate, a first rotating seat is arranged at one end, far away from the ground, of the supporting plate and is rotatably connected with the sieve plate, a screen is arranged in the middle of the sieve plate, the middle of the supporting plate is rotatably connected with a rotating shaft, a rotating disc is arranged at one end, close to the center of the device, of the rotating shaft, the outer side of the rotating disc is rotatably connected with one end of a supporting rod, and the other end of the supporting rod is rotatably connected with the sieve plate;
jacking mechanism, including setting up in the spout at bottom plate middle part, spout sliding connection slider, the one end that the slider is close to the sieve is equipped with the fixed plate, and the both sides sliding connection of fixed plate has the guide bar, and the one end that the guide bar is close to the sieve is equipped with the layer board, is equipped with the spring between layer board and the fixed plate, is equipped with on the layer board with screen cloth complex top.
2. The sand screening device for construction according to claim 1, wherein the screen is in a relaxed state.
3. The sand screening device for building construction as claimed in claim 1, wherein the supporting plate is provided at both sides thereof with supporting seats rotatably connected to the top wheels, and the screen plate is provided at both sides thereof with waved backing plates engaged with the top wheels.
4. The sand screening device for building construction according to claim 1, wherein a rotation driving component for driving the rotation shaft to rotate is provided on the supporting plate.
5. The sand screening device for building construction according to claim 4, wherein the rotary driving assembly comprises a second rotary seat arranged on the bottom plate, the second rotary seat is rotatably connected with the cylinder, a piston rod of the cylinder is rotatably connected with one end of a rotary rod, and the other end of the rotary rod is fixedly connected with the end part of the rotary shaft.
6. The sand screening device for building construction according to claim 1, wherein a displacement driving assembly for driving the slide block to move is provided on the base plate.
7. The sand screening device for building construction according to claim 6, wherein the displacement driving assembly comprises a driving motor arranged on the bottom plate, an output shaft of the driving motor is fixedly connected with an end part of a screw rod, and the screw rod is in threaded connection with a sliding block.
8. The sand screening device for building construction according to claim 7, wherein the screw rod is provided with double-spiral chutes with opposite rotation directions and equal thread pitches.
CN202210448975.5A 2022-04-26 2022-04-26 Sand screening device for building construction Active CN114904760B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210448975.5A CN114904760B (en) 2022-04-26 2022-04-26 Sand screening device for building construction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210448975.5A CN114904760B (en) 2022-04-26 2022-04-26 Sand screening device for building construction

Publications (2)

Publication Number Publication Date
CN114904760A true CN114904760A (en) 2022-08-16
CN114904760B CN114904760B (en) 2023-06-09

Family

ID=82763999

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210448975.5A Active CN114904760B (en) 2022-04-26 2022-04-26 Sand screening device for building construction

Country Status (1)

Country Link
CN (1) CN114904760B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107824434A (en) * 2017-12-04 2018-03-23 郑州格瑞塔电子信息技术有限公司 A kind of Sand screen of multidirectional rocking type
CN208894572U (en) * 2018-06-22 2019-05-24 彭钢 A kind of facilitate carries out the mobile construction site husky net of sieve
CN209952948U (en) * 2019-01-22 2020-01-17 烟台工程职业技术学院(烟台市技师学院) Mechanical equipment that sand and soil was selected separately for construction
CN211258539U (en) * 2019-11-14 2020-08-14 四川省汉城石油机械有限公司 Shale shaker for oil drilling convenient to clearance screen cloth
CN211412660U (en) * 2019-09-12 2020-09-04 裴欣 Grit screening plant for construction
CN211436978U (en) * 2019-12-27 2020-09-08 四川霖彬建材有限公司 Gravel screening mechanism for concrete mixing plant
CN212597005U (en) * 2020-06-04 2021-02-26 江苏鑫亿鼎石英科技股份有限公司 Novel screening device for quartz sand
CN212701715U (en) * 2020-06-11 2021-03-16 南通理工学院 Coating batching agitating unit for mechanical production
CN217043412U (en) * 2022-03-21 2022-07-26 福建南平青松化工有限公司 Camphor processing quick screening plant

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107824434A (en) * 2017-12-04 2018-03-23 郑州格瑞塔电子信息技术有限公司 A kind of Sand screen of multidirectional rocking type
CN208894572U (en) * 2018-06-22 2019-05-24 彭钢 A kind of facilitate carries out the mobile construction site husky net of sieve
CN209952948U (en) * 2019-01-22 2020-01-17 烟台工程职业技术学院(烟台市技师学院) Mechanical equipment that sand and soil was selected separately for construction
CN211412660U (en) * 2019-09-12 2020-09-04 裴欣 Grit screening plant for construction
CN211258539U (en) * 2019-11-14 2020-08-14 四川省汉城石油机械有限公司 Shale shaker for oil drilling convenient to clearance screen cloth
CN211436978U (en) * 2019-12-27 2020-09-08 四川霖彬建材有限公司 Gravel screening mechanism for concrete mixing plant
CN212597005U (en) * 2020-06-04 2021-02-26 江苏鑫亿鼎石英科技股份有限公司 Novel screening device for quartz sand
CN212701715U (en) * 2020-06-11 2021-03-16 南通理工学院 Coating batching agitating unit for mechanical production
CN217043412U (en) * 2022-03-21 2022-07-26 福建南平青松化工有限公司 Camphor processing quick screening plant

Also Published As

Publication number Publication date
CN114904760B (en) 2023-06-09

Similar Documents

Publication Publication Date Title
CN109013009B (en) Polymer coating raw materials grinder
CN213611881U (en) Grinding machine for preparing steel slag micro powder
CN105149216A (en) Reciprocating type vibrating screen
CN210206967U (en) Jaw crusher with screening function
CN209997696U (en) small-size building material grinding device for building engineering
CN209901709U (en) Transmission part for double-shaft synchronous vibrating screen
CN207086319U (en) A kind of particle vibration sieve with scraper plate
CN107803333A (en) Crush type sandstone sieve is used in one kind building coagulation production
CN108971420B (en) Waste sand crushing and regenerating device
CN209465321U (en) A kind of metallurgy vibrating screen
CN114904760A (en) Screening sand device for construction
CN211099260U (en) Grinding ball grinding roller for nano material production
CN101658840B (en) Mobile trommel sieve
CN209849282U (en) Automatic vibrating screen for rapidly screening sand and stone
CN213349021U (en) Stone crushing equipment for bridge construction
CN211756829U (en) Screening sand device for building engineering
CN221156973U (en) Modifier adds device for magnesium hydroxide production
CN112499004A (en) Sand temperature adjusting and treating system
CN112536136A (en) Circulating crushing device of sand making machine
CN112473909A (en) Building sand filtration equipment
CN217888193U (en) Mud separator is used in subway line construction
CN217858651U (en) Roller mill of multi-level two-way even sand casting
CN220346460U (en) Sand and stone screening device
CN221062843U (en) Ferrosilicon nitride crocus and screening all-in-one
CN213194502U (en) Mining single-shaft vibrating screen

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
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20230816

Address after: 844000 Forest Tourism Ecological Park Shop 2-201, Qiongbage Village, Jiashi County, Kashgar Prefecture, Xinjiang Uygur Autonomous Region

Patentee after: Xinjiang Jiutai Hengxiang Construction Engineering Co.,Ltd.

Address before: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province

Patentee before: Dragon totem Technology (Hefei) Co.,Ltd.

Effective date of registration: 20230816

Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province

Patentee after: Dragon totem Technology (Hefei) Co.,Ltd.

Address before: 067000 No. 2 College Road, Chengde High-tech Industrial Development Zone, Hebei Province

Patentee before: Hebei Petroleum University of Technology