CN207463598U - A kind of sand-stone separator - Google Patents
A kind of sand-stone separator Download PDFInfo
- Publication number
- CN207463598U CN207463598U CN201721489388.1U CN201721489388U CN207463598U CN 207463598 U CN207463598 U CN 207463598U CN 201721489388 U CN201721489388 U CN 201721489388U CN 207463598 U CN207463598 U CN 207463598U
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- China
- Prior art keywords
- stone
- sand
- sieve
- grit
- sifting barrel
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Abstract
The utility model discloses a kind of sand-stone separators,Including spiral feeder,Spiral feeder is socketed with the sifting barrel for detaching gravel and stone,One end of sifting barrel is provided with feed inlet,The other end of sifting barrel is provided with stone outlet hole,Spiral feeder is by material transportation to stone outlet hole,The bottom of sifting barrel is connected with the husky device of fortune,The husky one end of device far from stone outlet hole of fortune is provided with sand outlet,The husky device of fortune receives the grit that screening shaft screen goes out and transports grit to sand outlet,Spiral feeder will be from the material transportation that feed inlet enters to stone outlet hole,During transported material,Grit in material leaves from sifting barrel and is fallen to the husky device of fortune by gravity,The husky device of fortune transports grit to sand outlet,Stone is moved to stone outlet hole by spiral feeder,Since sand outlet and stone outlet hole detach,The material that feed inlet enters sifting barrel is constantly separated into grit and stone leaves sifting barrel from sand outlet and stone outlet hole,Therefore it can realize and work continuously.
Description
Technical field
The utility model is related to construction machinery equipment field, more particularly to a kind of sand-stone separator.
Background technology
Sand-stone separator is mainly used for sand, stone, mud in the cleaning and gurry of concrete mixing plant week conversion trucd mixer
Deng separation, collection, recycling, the manufacture for regeneration concrete provides raw material.
Notification number is that the Chinese patent of CN206405022U discloses a kind of sand-gravel separation device, including being propped up to be supplied to
The supporting rack of support, the storage bin hopper for storing raw material and the screening roller for detaching sandstone, the screening roller axial direction one end open be into
Mouthful, the screening roller other end is provided with backstop, and the bottom of the screening roller is provided with conveyer belt, the conveyer belt and gear
The exit of net is equipped with same deflector chute, and material enters grit after screening roller from import and leaked out from screening roller into fortune
Above defeated band, deflector chute is eventually entered into, and stone is screening drums inside by backstop limitation accumulation.
The sand-gravel separation device stone accumulation screening drums inside, need worker periodically turn on backstop discharge stone, and by
It is same deflector chute in the stone outlet hole and sand outlet of the sand-gravel separation device, must stops feeding and opening when discharging stone
Backstop is skidded off by stone from deflector chute, and turning off backstop after stone discharge starts to feed, and causes the sand-stone separator that can not do
To working continuously, have much room for improvement.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of sand-stone separator, go out stone
Mouth is detached with sand outlet, has the advantages that work continuously.
The above-mentioned technical purpose of the utility model technical scheme is that：
A kind of sand-stone separator, including spiral feeder, it is characterized in that：The spiral feeder is socketed with to divide
From gravel and the sifting barrel of stone, one end of the sifting barrel is provided with feed inlet, the one end of the sifting barrel far from feed inlet
Stone outlet hole is provided with, material transportation to stone outlet hole, the barrel of the sifting barrel are provided with multiple pass through by the spiral feeder
The screening hole of sifting barrel is worn, the area in the screening hole is less than the maximum secting area of stone and screening hole area is more than gravel most
Big sectional area, the bottom of the sifting barrel are connected with the husky device of fortune, and the described husky one end of device far from stone outlet hole of fortune is provided with out
Husky mouth, the husky device of fortune receive the grit that screening shaft screen goes out and transport grit to sand outlet.
By using above-mentioned technical proposal, spiral feeder by from the material transportation that feed inlet enters to stone outlet hole,
During transported material, grit in material is by the squeezing action of gravity and spiral feeder from the inside of sifting barrel
The outside of sifting barrel is moved to, and is fallen on the husky device of fortune by gravity, husky device is transported and transports grit to sand outlet, object
When material is moved to stone outlet hole by spiral feeder, the material overwhelming majority is stone, and stone leaves sifting barrel from stone outlet hole, due to
Sand outlet and stone outlet hole separation, the two are not interfere with each other, and the material that feed inlet enters sifting barrel is constantly separated into grit and stone
Sifting barrel is left, therefore sand-stone separator can be realized and be worked continuously from sand outlet and stone outlet hole.The maximum secting area of stone is more than
Sieve the area in hole, therefore the stone inside the sifting barrel cannot leave sifting barrel from screening hole, and the maximum cross-section of grit
Product is less than the area in screening hole, therefore the grit inside sifting barrel can leave sifting barrel from screening hole.
The utility model is further arranged to：The husky device of fortune includes conveyer belt, and the sifting barrel is in the vertical direction
Projection be fully located at the inside of the projection of conveyer belt in the vertical direction.
By using above-mentioned technical proposal, the grit in sifting barrel is only moved straight down after leaving sifting barrel by gravity
It is dynamic, therefore the grit for leaving sifting barrel can be all fallen on conveyer belt along vertical direction, prevented grit from falling to ground and caused wave
Take, and conveyer belt transports grit to sand outlet, and band fortune is transported so as to make the grit in material that can be sized after cylinder separation
Transport to sand outlet.
The utility model is further arranged to：What the husky device of fortune included being close to conveyer belt is adhered to transport for scraping
The grit taken scrapes husky piece, described to scrape husky piece and be located near sand outlet.
By using above-mentioned technical proposal, viscosity is larger after absorbing moisture due to grit, and grit is easily adhered on conveyer belt,
Cause part grit that can not leave conveyer belt from sand outlet, it will fortune by the husky piece of scraping for being close to conveyer belt being located near sand outlet
The defeated grit taken scrapes off conveyer belt, and grit is made to be detached with conveyer belt, so as to which grit be made to leave conveyer belt from sand outlet.
The utility model is further arranged to：The sand outlet is connected with to receive the storage of grit transported husky device and shipped
Sandbox, the sandbox include multiple sandbox drawers being distributed vertically, and all sandbox drawers slidably connect same use
In the sandbox stent of support sandbox drawer.
By using above-mentioned technical proposal, grit from sand outlet leave conveyer belt after the highest sandbox of entry altitude take out
Drawer, the sandbox drawer detach the sandbox drawer after filling grit from sandbox stent, can the sandbox drawer be transported to regeneration
The manufacturing device of concrete, at the same time next stage sandbox drawer on sandbox stent receive grit, when next stage sandbox drawer
After filling grit, then empty sandbox drawer is put on the sandbox stent on the top of next stage sandbox drawer, pass through multiple sandboxs
The continuous replacement of drawer, enables sandbox continuously to receive grit, so as to which sand-stone separator be enable to work continuously, while energy
The grit that sandbox receives constantly is transported to the manufacture of the manufacturing device progress regeneration concrete of regeneration concrete.
The utility model is further arranged to：The stone outlet hole is connected with the Chu Shixiang for receiving stone, the storage stone
Case includes multiple stone case drawers being distributed vertically, and all stone case drawers, which slidably connect, same is used to support sandbox drawer
Stone box bracket.
By using above-mentioned technical proposal, stone from stone outlet hole leave sifting barrel after the highest stone case drawer of entry altitude,
The stone case drawer detaches the stone case drawer after filling stone from stone box bracket, can the stone case drawer be transported to regeneration coagulation
The manufacturing device of soil, at the same time next stage stone case drawer on stone box bracket receive stone, when next stage stone case drawer fills
After stone, then empty stone case drawer is put on the stone box bracket on the top of next stage stone case drawer, pass through multiple stone case drawers
Continuous replacement, storage stone case is enable continuously to receive stone, so as to which sand-stone separator be enable to work continuously, while can will be stored up
The stone that stone case receives constantly is transported to the manufacture of the manufacturing device progress regeneration concrete of regeneration concrete.
The utility model is further arranged to：The stone outlet hole is fixedly connected with the sieve being obliquely installed, and the sieve is set
Sieve pore of the area less than the maximum secting area of stone is equipped with, the sieve is close to one end of stone outlet hole higher than sieve far from stone outlet hole
One end, the one end of the sieve far from stone outlet hole with storage stone case connect, stone from it is described sieve online mobile to store up stone case in
Portion.
By using above-mentioned technical proposal, stone is moved to from sifting barrel in storage stone case by sieve, and stone is sieving
During online mobile, after the grit that is adhered on stone is fallen by gravity on sieve, sieve can be left from sieve pore, so as to
Make the stone purity higher for entering storage stone case, reduce the mixed grit quantity of stone in storage stone case.
The utility model is further arranged to：The projection of all sieve pores in the vertical direction is fully located at conveyer belt and exists
The inside of projection on vertical direction.
By using above-mentioned technical proposal, the grit that sieve is left from sieve pore is only fallen to conveyer belt vertically by gravity
On, grit is transported by conveyer belt to sand outlet again, reduces the waste of grit.
The utility model is further arranged to：The sieve is fixedly connected with that there are two be distributed in the sieve baffles of sieve both sides.
By using above-mentioned technical proposal, since spiral feeder is not unique to the extruding force direction of stone, from going out stone
The stone initial velocity direction left of mouth is not also unique, therefore when sieving online mobile, if stone initial velocity direction is towards sieve
Both sides, stone may fall to ground from the both sides of sieve, and the sieve baffle at the both ends of sieve can be prevented in sieve online mobile
Stone falls to ground from the both sides of sieve, and position-limiting action is played to stone, makes stone that can only be fallen into along sieve in storage stone case.
In conclusion the utility model has the advantages that：
Material enters sifting barrel from feed inlet, and the material in sifting barrel is transported by helixes feed equipment to stone outlet hole, material
In grit left sifting barrel or sieve by sieving hole or sieve pore by the extruding force of gravity or helixes feed equipment, and fall and transporting
Defeated to take, the stone that transported band is transported to sandbox, and in material is transported the sandbox to storage stone case, sandbox and Chu Shixiang
Drawer and stone case drawer can be removed after grit or stone is filled from sandbox stent or stone box bracket, are substituted for empty sandbox and take out
Drawer or stone case drawer, therefore sand-stone separator can work continuously.
Description of the drawings
Fig. 1 is the structure diagram of embodiment；
Fig. 2 is the structure diagram of embodiment；
Fig. 3 is the structure diagram of the removal wind shield of embodiment；
Fig. 4 is the explosive view of loading hopper, sifting barrel and feed screw；
Fig. 5 is the husky device of fortune of embodiment and the connection relationship diagram of sandbox；
Fig. 6 is the explosive view of the sandbox of embodiment；
Fig. 7 is the structure diagram of the husky device of fortune of embodiment.
Reference numeral：1st, loading hopper；2nd, spiral feeder；21st, feeding motor；22nd, helical blade；3rd, sifting barrel；
31st, stone outlet hole；32nd, feed inlet；33rd, hole is sieved；34th, sieve；341st, baffle is sieved；342nd, sieve pore；4th, Chu Shixiang；41st, stone case branch
Frame；42nd, stone case drawer；421st, stone case handle；5th, husky device is transported；51st, sand outlet；52nd, conveyer belt；53rd, husky piece is scraped；54th, roller；
55th, motor is transported；56th, fixed plate；6th, sandbox；61st, sandbox stent；62nd, sandbox drawer；621st, sandbox handle.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of sand-stone separator includes hollow sifting barrel 3.Sifting barrel 3 is provided with perforation sifting barrel 3
Two or more screening holes 33, the area in screening hole 33 are more than the maximum secting area of gravel and less than the maximum cross-section of stone
Product, therefore the grit inside sifting barrel 3 can leave sifting barrel 3 by sieving hole 33, and it is located at the stone inside sifting barrel 3
Sifting barrel 3 can not be left by sieving hole 33.One end of sifting barrel 3 is fixedly connected with the loading hopper 1 of perforation sifting barrel 3, sieve
The connecting pin for dividing cylinder 3 and loading hopper 1 is feed inlet 32.The one end of sifting barrel 3 far from feed inlet 32 is provided with stone outlet hole 31.
As shown in Figure 2 and Figure 4, sifting barrel 3 is equipped with spiral feeder 2, and spiral feeder 2 includes being located at sifting barrel
Helical blade 22 inside 3.Helical blade 22 is fixedly connected close to one end of feed inlet 32 is useful for 22 turns of helical blade of driving
Dynamic feeding motor 21.Material in loading hopper 1 is entered sifting barrel 3 by gravity, so as to make material and helical blade
22 contacts, feeding motor 21 drive helical blade 22 to be rotated, so as to which the material being in contact with helical blade 22 be driven to carry out
It is mobile.Material can only be moved under the push of helical blade 22 along the length direction of sifting barrel 3 towards stone outlet hole 31, and
In moving process, grit in material is left sifting barrel 3 by the extruding force of gravity and helical blade 22 from screening hole 33,
The material for making transport to stone outlet hole 31 is largely stone.
As shown in figure 3, the bottom of sifting barrel 3 is provided with the husky device 5 of fortune, transports husky device 5 and include being fixedly connected on the ground
Two fixed plates 56 being mutually parallel.Two or more rollers 54 are equipped between two fixed plates 56.All rollers
Cylinder 54 is socketed with same conveyer belt 52, and the one end of conveyer belt 52 far from stone outlet hole 31 is sand outlet 51, close to sand outlet 51
Roller 54 is fixedly connected with transport motor 55, and transport motor 55 drives the roller 54 to be rotated, which passes through frictional force
Conveyer belt 52 is driven to be moved, the grit for leaving sifting barrel 3 falls to conveyer belt 52 and transported band 52 is transported to sand outlet
51。
As shown in figure 3, stone outlet hole 31 is fixedly connected with sieve 34.The height apart from ground of sieve 34 along far from go out stone
The direction of mouth 31 is gradually reduced.Sieve 34 is provided through two or more sieve pores 342 of sieve 34, sieve pore 342
Area is more than the maximum secting area of gravel and less than the maximum secting area of stone.Sieve 34 is distributed in sieve there are two being fixedly connected
The sieve baffle 341 of 34 both sides.The stone for leaving stone outlet hole 31 carries small part grit, and stone is made by the limiting of sieve baffle 341
Sieve 34 is left with from stone outlet hole 31 into sieve 34 and on sieve 34 after movement, and the grit on sieve 34 passes through sieve pore
342 leave sieve 34, improve the stone purity transported from stone outlet hole 31.
Since grit can pass through sifting barrel 3 or the screening hole 33 of sieve 34 or sieve pore 342, across screening hole 33 or sieve pore
342 grit is moved straight down by gravity, preferably to receive grit, the waste of grit is reduced, as shown in figure 3, sieve
The projection of cylinder 3 and all sieve pores 342 in the vertical direction is divided to be fully located at the inside of the projection of conveyer belt 52 in the vertical direction,
Grit is made to be fallen on conveyer belt 52 after leaving sifting barrel 3 or sieve 34, the grit on conveyer belt 52 is transported band 52 and transports to going out
Husky mouth 51.
But since grit particle is smaller, the easy wind-engaging power of grit acts on and tilts and fall, therefore, as shown in Fig. 2, in sifting barrel
3 both sides are fixedly connected with the wind shield being fixedly connected with the ground, and the wind of 52 both sides of conveyer belt is stopped by wind shield, so as to
Reduce the probability that grit wind-engaging power during falling acted on and fell to ground.
As shown in Fig. 5, Fig. 6 and Fig. 7, for convenience of the storage and transport of stone and grit, as shown in Figures 2 and 3, going out sand
Mouth 51 is nearby connected with sandbox 6, and storage stone case 4 is connected near stone outlet hole 31.As shown in Figure 3 and Figure 6, sandbox 6 includes
The sandbox stent 61 being fixedly connected with the ground, the sandbox stent 61 are equipped with two or more sandbox drawers 62, often
A sandbox drawer 62 has been fixedly connected with sandbox handle 621, and human hand holds a sandbox handle 621 can be by corresponding sandbox drawer
62 skid off from sandbox stent 61.Storage stone case 4 is similar with sandbox 6, and storage stone case 4 includes the stone box bracket 41 being connect with ground,
The stone box bracket 41 is equipped with two or more stone case drawers 42, and each stone case drawer 42 has been fixedly connected with stone case
Handle 421, human hand hold a stone case handle 421 and can skid off corresponding stone case drawer 42 from stone box bracket 41.When each
After stone case drawer 42 or sandbox drawer 62 fill stone or grit, by the stone case drawer 42 or sandbox drawer 62 from stone box bracket 41
Or it is removed on sandbox stent 61, and the stone case drawer 42 or sandbox drawer 62 are transported to the manufacturing device progress of regeneration concrete
The manufacture of regeneration concrete, at the same time, remaining stone case drawer 42 or sandbox drawer 62 on stone box bracket 41 continue to stone
Block or grit, and can be taken out in the empty stone case drawer 42 of the position merging for lacking a stone case drawer 42 or sandbox drawer 62 or sandbox
Drawer 62 constantly carries out splicing.
As shown in fig. 7, viscosity is larger after carrying moisture due to grit, the larger grit of the humidity near sand outlet 51 is easy to stick
It is attached on conveyer belt 52 transported band 52 to transport out of sandbox 6 rather than fallen to sandbox 6 by gravity, therefore, such as Fig. 5 and Fig. 7
It is shown, it is fixedly connected between two fixed plates 56 and scrapes husky piece 53 near sand outlet 51, scraped husky piece 53 and be close to conveyer belt
52, it is scraped so as to which the grit that conveyer belt 52 adheres to be made to be scraped husky piece 53 to sandbox 6.
Operation principle：
Material enters sifting barrel 3 from loading hopper 1, and is transported by spiral feeder 2 towards stone outlet hole 31, in object
In the transportational process of material, grit in material leaves sifting barrel 3 by sieving hole 33 and falls to conveyer belt 52, from stone outlet hole 31 from
The material for opening sifting barrel 3 is moved to storage stone case 4 by sieve 34, and the material that sifting barrel 3 is left from stone outlet hole 31 is largely stone
Block, small part are grit, and grit leaves sieve 34 by sieve pore 342 and falls to conveyer belt 52, and conveyer belt 52 is received from sifting barrel 3
The grit that is fallen with sieve 34 simultaneously transports grit to sand outlet 51, and the grit of sand outlet 51 falls to sandbox 6, storage stone case 4
Or the stone case drawer 42 or sandbox drawer 62 of sandbox 6 can be replaced empty stone case drawer 42 or sand after stone or grit is filled
Case drawer 62, realization is worked continuously.
This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability
Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but
As long as it is all protected in the right of the utility model by Patent Law.
Claims (8)
1. a kind of sand-stone separator, including spiral feeder (2), it is characterized in that：Spiral feeder (2) socket is useful
In separation gravel and the sifting barrel (3) of stone, one end of the sifting barrel (3) is provided with feed inlet (32), the sifting barrel (3)
One end far from feed inlet (32) is provided with stone outlet hole (31), and the spiral feeder (2) is by material transportation to stone outlet hole
(31), the barrel of the sifting barrel (3) is provided with multiple through the screening hole (33) of sifting barrel (3), screening hole (33)
Area is less than the maximum secting area of stone and screening hole (33) area is more than the maximum secting area of gravel, the sifting barrel (3)
Bottom is connected with the husky device (5) of fortune, and the described husky one end of device (5) far from stone outlet hole (31) of fortune is provided with sand outlet (51), institute
The husky device (5) of fortune is stated to receive the grit that sifting barrel (3) sifts out and transport grit to sand outlet (51).
2. a kind of sand-stone separator according to claim 1, it is characterized in that：The husky device (5) of fortune is including conveyer belt
(52), the projection of the sifting barrel (3) in the vertical direction is fully located at the interior of the projection of conveyer belt (52) in the vertical direction
Portion.
3. a kind of sand-stone separator according to claim 2, it is characterized in that：The husky device (5) of fortune is transported including being close to
Band (52) scrapes husky piece (53) for scrape the grit that is adhered on conveyer belt (52), and the husky piece (53) of scraping is positioned at sand outlet
(51) near.
4. a kind of sand-stone separator according to claim 1, it is characterized in that：The sand outlet (51) is connected with to receive
The sandbox (6) of grit that the husky device (5) of fortune is shipped, the sandbox (6) include multiple sandbox drawers (62), all sand
Case drawer (62) slidably connects same sandbox stent (61).
5. a kind of sand-stone separator according to claim 1, it is characterized in that：The stone outlet hole (31) is connected with to receive
The Chu Shixiang (4) of stone, the storage stone case (4) include multiple stone case drawers (42), and all stone case drawers (42), which are slided, to be connected
It is connected to same stone box bracket (41).
6. a kind of sand-stone separator according to claim 5, it is characterized in that：The stone outlet hole (31) is fixedly connected with inclination
The sieve (34) of setting, the sieve (34) are provided with sieve pore (342) of the area less than the maximum secting area of stone, the sieve
(34) close to stone outlet hole (31) one end higher than sieve (34) far from stone outlet hole (31) one end, the sieve (34) far from go out stone
One end of mouth (31) is connect with Chu Shixiang (4), and stone is moved to the inside of Chu Shixiang (4) from the sieve (34).
7. a kind of sand-stone separator according to claim 6, it is characterized in that：All sieve pores (342) are in vertical direction
On projection be fully located at the inside of the projection of conveyer belt (52) in the vertical direction.
8. a kind of sand-stone separator according to claim 7, it is characterized in that：The sieve (34) is divided there are two being fixedly connected
Cloth is in the sieve baffle (341) of sieve (34) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489388.1U CN207463598U (en) | 2017-11-09 | 2017-11-09 | A kind of sand-stone separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721489388.1U CN207463598U (en) | 2017-11-09 | 2017-11-09 | A kind of sand-stone separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207463598U true CN207463598U (en) | 2018-06-08 |
Family
ID=62263451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721489388.1U Expired - Fee Related CN207463598U (en) | 2017-11-09 | 2017-11-09 | A kind of sand-stone separator |
Country Status (1)
| Country | Link |
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| CN (1) | CN207463598U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672259A (en) * | 2018-06-27 | 2018-10-19 | 中铁工程装备集团有限公司 | A kind of roller screening type quarrying case |
| CN108970960A (en) * | 2018-08-09 | 2018-12-11 | 浙江建设职业技术学院 | A kind of full-automatic sandstone screening transmission device |
| CN109127697A (en) * | 2018-08-21 | 2019-01-04 | 苏州尚梵斯科技有限公司 | A kind of screening type thermal desorption soil repair system and its method |
| CN109174946A (en) * | 2018-08-21 | 2019-01-11 | 苏州尚梵斯科技有限公司 | A kind of screening thermal desorption device and its method for soil remediation |
| CN112619843A (en) * | 2020-12-28 | 2021-04-09 | 侯建锋 | Pretreatment crushing and screening equipment for manufacturing waterproof mortar and preparation method of waterproof mortar |
-
2017
- 2017-11-09 CN CN201721489388.1U patent/CN207463598U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672259A (en) * | 2018-06-27 | 2018-10-19 | 中铁工程装备集团有限公司 | A kind of roller screening type quarrying case |
| CN108970960A (en) * | 2018-08-09 | 2018-12-11 | 浙江建设职业技术学院 | A kind of full-automatic sandstone screening transmission device |
| CN109127697A (en) * | 2018-08-21 | 2019-01-04 | 苏州尚梵斯科技有限公司 | A kind of screening type thermal desorption soil repair system and its method |
| CN109174946A (en) * | 2018-08-21 | 2019-01-11 | 苏州尚梵斯科技有限公司 | A kind of screening thermal desorption device and its method for soil remediation |
| CN109127697B (en) * | 2018-08-21 | 2021-01-26 | 吴鹏 | Screening type thermal desorption soil remediation system and method thereof |
| CN112619843A (en) * | 2020-12-28 | 2021-04-09 | 侯建锋 | Pretreatment crushing and screening equipment for manufacturing waterproof mortar and preparation method of waterproof mortar |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20181109 |
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| CF01 | Termination of patent right due to non-payment of annual fee |