CN106737232A - A kind of accurate sand feeding device and send sand method - Google Patents
A kind of accurate sand feeding device and send sand method Download PDFInfo
- Publication number
- CN106737232A CN106737232A CN201710173864.7A CN201710173864A CN106737232A CN 106737232 A CN106737232 A CN 106737232A CN 201710173864 A CN201710173864 A CN 201710173864A CN 106737232 A CN106737232 A CN 106737232A
- Authority
- CN
- China
- Prior art keywords
- sand
- screw
- air
- flow
- primary air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0092—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed by mechanical means, e.g. by screw conveyors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
A kind of accurate sand feeding device, including primary air input pipe, primary air efferent duct, lower sandpipe, screw tube, storage sand container, pressure-equalizing pipe, auxiliary are shaked out air-flow skirt；The pressure-equalizing pipe is used to import during air-flow flows into storage sand container, in the sand in storage sand container is smoothly entered to screw tube by pressure-equalizing pipe；The shake out connected entrance of air-flow skirt and screw tube of the auxiliary is located at the surface of lower sandpipe and is used to be directed downwardly into air-flow to screw tube；Accurate adjustment is carried out by the amount that sand grains is conveyed along the axially extending screw rod of screw tube is provided with the screw tube only by changing screw speed.
Description
Technical field
The present invention relates to the tiny particles content transport under pressure environment and powder transport field, while being related to sand blast test to lead
Domain.
Background technology
Sand supplying device is commonly used for the occasion that the conveying sand grains in industrial production is processed；For some sand blast tests,
Also sand supplying device is used.In sandblasting processing technology and sand blast test, sand supplying device is required to for abrasive blast equipment is automatic continuous
Conveying sand grains so that PROCESS FOR TREATMENT and experimental test are highly efficient.No matter but in any sand supplying application scenario, accurate sand supplying is all
It is the important prerequisite of sand supplying device.In supersonic speed sand blast test, to make sand grains be finally reached supersonic speed state, then need to make sand
Grain is sufficiently mixed with gases at high pressure (pressure value is normally placed in more than 3MPa) under the relatively low environment of air velocity, it
Make the gas sand two phase flow with certain pressure that the supersonic speed state required by experiment is accelerated to by Laval configuration pipe again afterwards.
In the prior art, for sending the scheme of sand, it is that the material that will be conveyed is directly placed at can be with to have a kind of mode
As in the storage tank of pressure vessel, storage tank arranged orthogonal；Discharging opening in storage tank lower end installs flow measuring meter, measurement
Count and transmit to computer, computer controls the folding size of discharging opening electronic valve again；It is anti-by real-time reception flowmeter
The information of feedback, the folding amount of computer reed time controll electronic valve, the essence in the environment of certain pressure to material is realized with this
Really transport.The method has some shortcomings part：First, sand grains will be very easy to go out in the venturi position of electronic valve and flowmeter
Now block, so as to influence the continuity of sand supplying.Sand grains in nature is nearly all coarse sand, is a kind of poor solid of mobility
Particulate matter, all plug sand is evacuated in the place that metered flow pipeline is gradually narrowed and valve is narrowed without agitator or vibrator etc.
The equipment of phenomenon, then sand grains be very easy to clogging occur, influence sand supplying continuity.Second, the method is difficult to accomplish right
The precise control of amount of sand.First, flowmeter principle is only applicable to measure liquid or gas, and it is for this kind of solids of sand grains
The measurement of mass flow amount is simultaneously improper；Secondly, when the requirement to amount of sand than it is relatively low when, the folding amount of electronic valve must then be received
Narrow, if being narrowed to a certain amount of, friction between sand grains and extruding will certainly form self-locking at valve, cause Severe blockage, because
This is difficult to make sand supplying device carry out precise control to sand production rate by the folding of valve.
It is during material is placed on can bear the storage tank of certain pressure to have a kind of mode；Storage tank bottom sets sieve formula and goes out
Material mouth, discharging opening is connected by soft rubber tube with primary air；Storage tank is integrally placed on the weighing balance with pressure sensor；
Vibration from vibrator to storage tank offer in the horizontal direction；When equipment portion does not work, sand grains can automatically be blocked in sieve-like and go out
In material mouth, operationally, storage tank horizontal jitter is set the sand grains being blocked in sieve-like discharging opening is loosened and reality by vibrator
Existing sand supplying；The data transfer of weighing balance to computer, then by the vibration frequency and amplitude of computer controls vibrator；By adjustment
The vibration parameters of vibrator, realize the control to amount of sand.The method is disadvantageous in that：Amount of sand is difficult precise control,
Sand supplying reliability is not high.Firstly, since each sand grains geometry is irregular, the discharging degree of each sieve aperture and stifled will be caused
Plug degree is inconsistent, in the presence of storing pressure inside the tank, in some instances it may even be possible to the phenomenon of the equal Severe blockage of all sieve apertures occur；Its
Secondary, amount of sand depends on the vibration parameters of vibrator, and the situation of sieve pore blockade is changing in real time, and vibration parameters can not be kept away
Exempt from real-time change, and the randomness of sand would become hard to ensure the accurate control of sand supplying under the time of this change procedure needs and sieve aperture
System and reliability.
Therefore, it is necessary to a kind of new technical scheme is solving the above problems.
The content of the invention
Goal of the invention：To solve the above problems, there is provided a kind of accurate sand feeding device, can accurately sand supplying while, make confession
Sand process is smoothly reliable, it is to avoid sand grains is blocked.
Technical scheme：To reach above-mentioned purpose, the present invention can be adopted the following technical scheme that：
A kind of accurate sand feeding device, including primary air input pipe, the primary air efferent duct positioned at primary air input pipe front end,
Be used to for sand to fall into the lower sandpipe of primary air efferent duct, the lower sandpipe top of connection and the screw tube for extending laterally, positioned at screw tube
Top and connect screw tube storage sand container, connection storage sand container pressure-equalizing pipe, connection screw tube above auxiliary shake out
Air-flow skirt, drive device；The pressure-equalizing pipe is used to import in air-flow inflow storage sand container；The auxiliary air-flow that shakes out draws
Pipe is located at the surface of lower sandpipe and is used to be directed downwardly into air-flow to screw tube with the connected entrance of screw tube；In the screw tube
It is provided with along the axially extending screw rod of screw tube, the top that the screw rod periphery has continuous screw thread, the lower sandpipe is located at spiral shell
In the lateral extent of line, the sand export of the storage sand container is similarly positioned in the lateral extent of screw thread；The drive device drives
Screw rod is rotated in screw tube.
Beneficial effect：The present invention realizes the at the uniform velocity rotation of accurate sand supplying, i.e. screw shaft using the mode of screw flight transmission
Turn, sand grains also can be conveyed uniformly, convey sand grains amount only by changing screw speed by carry out accurate adjustment.Meanwhile, lead to
During excess pressure balance pipe enables the sand in storage sand container smoothly to enter to screw tube；The reason for using the design is：Primary air
The shunting that primary air in input pipe is formed can cause to store up the sand grains in sand container by screw tube to storage sand container lower section
It is difficult, therefore under the air pressure below air-flow counteracting storage sand container being provided downwards by pressure-equalizing pipe and enabling sand grains smoothly
Fall.
Further, by aiding in the downward sandpipe direction inflow stream of air-flow skirt of shaking out, make to reach above lower sandpipe
Sand grains can be blown into lower sandpipe by the air-flow, so as to avoid sand grains because with the inertia of itself rotation screw thread drive under across
Sand export is crossed, in the hidden danger that the afterbody of screw tube results in blockage, sand supplying precision and stability is further improved.
Further, the pressure-equalizing pipe and the auxiliary air-flow skirt that shakes out connect primary air input pipe and introduce main gas
Air-flow in stream input pipe, so directly for pressure-equalizing pipe and can aid in the air-flow skirt that shakes out to provide gas by primary air
Stream, makes structure compacter.
Further, the connectivity part of the pressure-equalizing pipe and primary air input pipe and auxiliary shake out air-flow skirt with
The connectivity part of primary air input pipe is equipped with magnetic valve；The lower sandpipe is provided with magnetic valve with the connectivity part of primary air efferent duct；
The air-flow for completing each pipeline by the opening and closing of magnetic valve is opened and closed..
Further, the pressure-equalizing pipe is provided with pressure gauge with the connectivity part of storage sand container.
Further, the screw rod includes extending back the screw shaft of screw tube, and the screw rod the tip of the axis is connected with
To the motor and decelerator of drive screw turns, the motor and decelerator are the drive device.
Further, double O-ring grooves are designed with the two ends of screw shaft, first O-ring Main Function is to stop trickle
Sand dust with leakage gas overflowing and simultaneously also can sealing gas, second sealing ring Main Function is air seal, improve spiral shell
The gas tightness of bar cylinder；Dust-proof felt is provided between screw tube and screw shaft；The Main Function of felt is to prevent extraneous trickle
Particulate matter enters sand supplying device, and the influence to bearing operation is avoided as far as possible.
Further, the bearing of studdle axle elects the angular contact ball bearing of back-to-back arrangement as；Axial force is eliminated with this
Influence to sand supplying device.
Present invention also offers the application method of above-mentioned accurate sand feeding device, specific technical scheme is：
Sand is put into storage sand container in advance；Primary air input pipe starts to be input into air-flow；Drive device drive screw turns are to pre-
If rotating speed；It is used to import in air-flow inflow storage sand container so as to be dropped down onto under sand in screw tube and be positioned at by pressure-equalizing pipe
In screw flight, then screw thread is followed to move forward until reaching lower sandpipe entrance, and by aiding in sand by screw rod rotation
The air-flow auxiliary that the air-flow skirt that shakes out is directed downwardly into enters sand blast in lower sandpipe, and sand enters primary air efferent duct and leads to from lower sandpipe
The stream pressure crossed in primary air input pipe sends out sand from primary air efferent duct.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the invention；
Fig. 2 is general structure sectional view of the invention；
Fig. 3 is the partial enlarged drawing at A in Fig. 2；
Fig. 4 is the partial enlarged drawing at B in Fig. 2.
Specific embodiment
1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4 are described further to specific embodiment of the invention below in conjunction with the accompanying drawings.
The present invention is a kind of accurate sand supplying device suitable for hyperbaric environment.The right side of the primary air input pipe 13 is three
Siphunculus 14；The right side of three-way pipe 14 is in charge of for four, then connects three-way pipe 15；The right side of three-way pipe 15 is in charge of for four, then connects three
Siphunculus 18；The right side of three-way pipe 18 is primary air efferent duct 19；The air-flow of pipeline 13,14,15,18 and 19 is flowed through for pressure is higher
Primary air.
The upside connection magnetic valve 23 of three-way pipe 14, the upside connection auxiliary of magnetic valve 23 is shaked out air-flow skirt 20；Air-flow
The downside connection auxiliary of skirt 20 is shaked out air-flow intake 9.
The upside connection magnetic valve 22 of three-way pipe 15, the upside connection pressure-equalizing pipe 21 of magnetic valve 22, pressure-equalizing pipe
21 right side connection three-way pipe 7.
In the present embodiment, pressure-equalizing pipe 21 and the auxiliary air-flow skirt 20 that shakes out connect primary air input pipe 13 simultaneously
It is introduced into the air-flow in primary air input pipe 13；In other embodiments, it is also possible to shaked out gas to pressure-equalizing pipe 21 and auxiliary
Stream skirt 20 provides single source of the gas, can be equally available implementation method of the invention, will not be repeated here.
The upside connection magnetic valve 17 of three-way pipe 18, the upside of magnetic valve 17 is lower sandpipe 16.
The right side of motor 1 is decelerator 2, and the right side of decelerator 2 is screw rod 3；Angular contact ball bearing 11 and 10 is supported jointly
Screw rod 3, and ensure there is certain gap value between the screw thread of screw rod 3 and the wall of screw tube 4.
The upside of the left end of screw tube 4 is storage sand container 5, and the upside of the right-hand member of screw tube 4 shakes out air-flow intake 9 for auxiliary,
The downside of the right-hand member of screw tube 4 is lower sandpipe 16.
The upside of storage sand container 5 is pressure gauge 8, and the upside of pressure gauge 8 is three-way pipe 7, and the upside of three-way pipe 7 is magnetic valve
6。
Operating procedure of the invention is such：
The first step：Magnetic valve 23, magnetic valve 22, magnetic valve 17 are closed, and magnetic valve 6 is opened, to be placed into sand grains
Afterwards, magnetic valve 6 is closed immediately.
Second step：After primary air is linked into primary air input pipe 13, magnetic valve 23, magnetic valve 22 and magnetic valve 17 dozens
Open.
3rd step：Start motor 1, adjusted to a certain amount of sand requirement the output speed of motor 1 by adjusting frequency converter
Tachometer value.In the case where the screw thread of screw rod 3 is uniformly promoted, sand grains will accurately be transported to lower sandpipe 16 from storage sand container 5, then three
Converge with primary air at siphunculus 18, most flow to next environment through primary air efferent duct 19 afterwards.
The object of the present invention is achieved like this：
In the second step of aforesaid operations, when primary air circulates in pipeline 13 to pipeline 19, magnetic valve 22 is opened so that
The pressure that pressure in storage sand container 5 flows through three-way pipe 18 with primary air keeps balance.The purpose of this design is, by flat
The pressure of weighing apparatus sand supplying device sand inlet and sand export, so ensure the sand grains in storage sand container 5 can smoothly under drop down onto screw tube 4
In, so as to equably be delivered to out sandpipe 16 under the promotion of screw rod 3.Open magnetic valve 23 so that sand export 16 realizes air-flow
Circulation.The purpose of the design is the stability of the precision for increasing lower sand, improves sand supplying efficiency.Reason is：Going out in screw tube 4
At sand mouthful, if not designing sand device under the auxiliary, if on the one hand amount of sand is larger, the rotating speed of screw rod is very fast, some sand grains
By with the inertia of itself rotation screw thread drive under across sand export, resulted in blockage in the afterbody of screw tube, thus influence supply
Sand precision stability, and air current flow will be formed between drainage tube inlet 9 and lower sandpipe 16 after the design is increased, will force
Property ground bring sand grains into sand export from screw flight；Another aspect sand grains only with itself suffered gravity fall to three-way pipe 18,
Falling speed is relatively slow, inefficient, and the air-flow formed between drainage tube inlet 9 and lower sandpipe 16 after the design is increased
The whereabouts by sand grains is accelerated is flowed, the sand grains of sand supplying device is rapidly converged with primary air.
In the 3rd step of aforesaid operations, motor 1 drives screw shaft 3 at the uniform velocity to rotate, by the screw thread rotation of screw shaft 3 with
The cooperation of the wall of screw tube 4 and realize the uniform conveying of sand grains.Principle is that screw shaft 3 often rotates a circle, screw thread meeting therein
The sand grains being stored between screw thread and screw rod tube wall surface is set to convey a helical pitch；And with the at the uniform velocity rotation of screw shaft 3, sand grains
Also can uniformly be conveyed.Under the hyperbaric environment, the advantage for sending sand from screw rod is, the required amount of sand in sand blast test
Less, the speed of the rotation of screw shaft 3 is very low, so sand grains is very small to the effect of attrition of screw shaft 3 and the wall of screw tube 4；This
Outward, the screw thread of screw shaft 3 can be stirred to the sand grains being between storage sand container 5 and screw tube 4, be relatively beneficial to store up sand with this
Sand grains in container 5 is fallen into screw tube 4.It has an advantage that it is accurate, steady transport using screw thread conveying, conveys the amount of sand grains
Accurate adjustment is carried out by only by changing screw speed.
The present invention has carried out special sealing design and pressure security design for hyperbaric environment, so that sand supplying device exists
Work well under hyperbaric environment.First, from suitable high voltage bearing pressure vessel as storage sand container, take precautions against in process of the test
There is safety problem in middle storage sand container.Second, double O-ring grooves are designed with the two ends of screw shaft 3, as shown in Figure 3；First
O-ring Main Function is to stop trickle sand dust with the gas overflowing of leakage and while also can sealing gas, second sealing ring master
It is air seal to act on, and improves the gas tightness of screw tube 4.3rd, between the left end flange of screw tube 4 and screw shaft 3
Dust-proof felt is designed with, as shown in Figure 4；The Main Function of felt is to prevent extraneous fine particulates from entering sand supplying device, to the greatest extent
Amount avoids the influence to the operating of bearing 11.4th, pressure gauge is installed in the top of storage sand container 5；When pressure gauge is dashed forward in work
So reading is abnormal, and computer will at once cut off primary air, closes motor 1 and magnetic valve 23, makes the pressed gas in storage sand container
Overflowed through magnetic valve 22 rapidly, the pressed gas in screw tube is overflowed through magnetic valve 17 rapidly, avoid safe thing with this
Therefore.
In the sand supplying course of work, it is difficult to accomplish the positive confinement of gases at high pressure, after can take into account work for a period of time
Portion gas will leak out in the cavity formed with ring flange to the right side of screw tube 4, and the air pressure of accumulation will form one to screw shaft 3
Thrust to the left, therefore, the angular contact ball bearing of the back-to-back arrangement of Selection of Bearings of studdle axle 3 eliminates axial force with this
Influence to sand supplying device.The ring flange at the two ends of screw tube 3 or so is designed with bearing shoulder block, is propped up outside bearing by shoulder block
Circle, and certain pretension amount is applied to bearing, bearing rigidity is improved, increase the traveling comfort of screw shaft 3.
The thread surface of screw shaft 3 and the inwall attachment ceramic wear-resistant coating material of screw tube 4, to further enhance the confession
The service life of sand device..
In addition, concrete methods of realizing of the invention and approach are a lot, the above is only the preferred embodiment of the present invention.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also do
Go out some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.What is be not known in the present embodiment is each
Part can use prior art to be realized.
Claims (9)
1. a kind of accurate sand feeding device, it is characterised in that：Including primary air input pipe, the main gas positioned at primary air input pipe front end
Stream efferent duct, the lower sandpipe, the lower sandpipe top of connection and the screw tube, the position that extend laterally that are used to fall into sand primary air efferent duct
In screw tube top and connect above the storage sand container of screw tube, the pressure-equalizing pipe of connection storage sand container, connection screw tube
Aid in shake out air-flow skirt, drive device；The pressure-equalizing pipe is used to import in air-flow inflow storage sand container；It is described to aid in out
Sand air-flow skirt is located at the surface of lower sandpipe and is used to be directed downwardly into air-flow to screw tube with the connected entrance of screw tube；
Be provided with the screw tube along the axially extending screw rod of screw tube, the screw rod periphery has a continuous screw thread, it is described under
The top of sandpipe is located in the lateral extent of screw thread, and the sand export of the storage sand container is similarly positioned in the lateral extent of screw thread；
The drive device drive screw is rotated in screw tube.
2. accurate sand feeding device according to claim 1, it is characterised in that：The pressure-equalizing pipe and auxiliary are shaked out air-flow
The air-flow that skirt connects primary air input pipe and is introduced into primary air input pipe.
3. accurate sand feeding device according to claim 2, it is characterised in that：The pressure-equalizing pipe and primary air input pipe
Connectivity part and the shake out connectivity part of air-flow skirt and primary air input pipe of auxiliary be equipped with magnetic valve.
4. accurate sand feeding device according to claim 1, it is characterised in that：The company of the lower sandpipe and primary air efferent duct
Logical place is provided with magnetic valve.
5. accurate sand feeding device according to claim 4, it is characterised in that：The pressure-equalizing pipe and the company for storing up sand container
Logical place is provided with pressure gauge.
6. accurate sand feeding device according to claim 1, it is characterised in that：The screw rod includes extending back screw tube
Screw shaft, the screw rod the tip of the axis is connected with motor and decelerator to drive screw turns, the motor and deceleration
Device is the drive device.
7. accurate sand feeding device according to claim 6, it is characterised in that：Double O-rings are designed with the two ends of screw shaft
Groove, and dust-proof felt is provided between screw tube and screw shaft.
8. accurate sand feeding device according to claim 6, it is characterised in that：The bearing of studdle axle elects row back-to-back as
The angular contact ball bearing of row.
9. according to any one of claim 1 to 8 accurate sand feeding device application method, it is characterised in that：Storage sand container
In be put into sand in advance；Primary air input pipe starts to be input into air-flow；Drive device drive screw turns are to default rotating speed；By pressure
Balance pipe is used to import in air-flow inflow storage sand container so as to be dropped down onto under sand in screw tube and be positioned in screw flight, then led to
Crossing screw rod rotation makes sand that the sandpipe entrance under reaching is moved forward under the drive of rotation screw thread, and by aiding in the air-flow that shakes out
The air-flow auxiliary that skirt is directed downwardly into enters sand blast in lower sandpipe, and sand enters primary air efferent duct and passes through primary air from lower sandpipe
High pressure draught in input pipe sends out sand from primary air efferent duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173864.7A CN106737232A (en) | 2017-03-22 | 2017-03-22 | A kind of accurate sand feeding device and send sand method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710173864.7A CN106737232A (en) | 2017-03-22 | 2017-03-22 | A kind of accurate sand feeding device and send sand method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106737232A true CN106737232A (en) | 2017-05-31 |
Family
ID=58967515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710173864.7A Pending CN106737232A (en) | 2017-03-22 | 2017-03-22 | A kind of accurate sand feeding device and send sand method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106737232A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860667A (en) * | 2017-10-16 | 2018-03-30 | 南京航空航天大学 | A kind of batch-type supersonic speed sand grains erosion test platform and test method |
| CN111267003A (en) * | 2020-01-22 | 2020-06-12 | 诺兰特新材料(北京)有限公司 | Apparatus for freezing raw edges |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4970830A (en) * | 1985-09-20 | 1990-11-20 | Schlick-Roto-Jet Maschinenbau Gmbh | Apparatus for the uniform dosage of granular blasting agents in pneumatical blasting machines |
| JPH07112369A (en) * | 1993-10-15 | 1995-05-02 | Naniwa Burasuto Kogyo Kk | Pressure type abrading material injection machine |
| US6000995A (en) * | 1995-11-06 | 1999-12-14 | Heinrich Schlick | Unit for the dosage of grained, pourable materials, in particular blasting abrasives |
| CN202780846U (en) * | 2012-08-20 | 2013-03-13 | 德州亚太集团有限公司 | Combined-type sand-blasting gun |
| CN105234832A (en) * | 2015-10-26 | 2016-01-13 | 刘全 | Abrasive material jet mixing method and device |
-
2017
- 2017-03-22 CN CN201710173864.7A patent/CN106737232A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4970830A (en) * | 1985-09-20 | 1990-11-20 | Schlick-Roto-Jet Maschinenbau Gmbh | Apparatus for the uniform dosage of granular blasting agents in pneumatical blasting machines |
| JPH07112369A (en) * | 1993-10-15 | 1995-05-02 | Naniwa Burasuto Kogyo Kk | Pressure type abrading material injection machine |
| US6000995A (en) * | 1995-11-06 | 1999-12-14 | Heinrich Schlick | Unit for the dosage of grained, pourable materials, in particular blasting abrasives |
| CN202780846U (en) * | 2012-08-20 | 2013-03-13 | 德州亚太集团有限公司 | Combined-type sand-blasting gun |
| CN105234832A (en) * | 2015-10-26 | 2016-01-13 | 刘全 | Abrasive material jet mixing method and device |
Non-Patent Citations (1)
| Title |
|---|
| 李远才、董选普: "《铸造造型材料实用手册 第2版》", 30 June 2015, 机械工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860667A (en) * | 2017-10-16 | 2018-03-30 | 南京航空航天大学 | A kind of batch-type supersonic speed sand grains erosion test platform and test method |
| CN107860667B (en) * | 2017-10-16 | 2020-04-21 | 南京航空航天大学 | Intermittent supersonic sand erosion test bed and test method |
| CN111267003A (en) * | 2020-01-22 | 2020-06-12 | 诺兰特新材料(北京)有限公司 | Apparatus for freezing raw edges |
| CN111267003B (en) * | 2020-01-22 | 2021-08-31 | 诺兰特新材料(北京)有限公司 | Apparatus for freezing raw edges |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5370951B2 (en) | Pneumatic transport method and apparatus for bulk material with poor flow | |
| CN104444381B (en) | Resin-oatmeal conveying, feed proportioning system | |
| KR20080093893A (en) | An apparatus for supplying constant quantity of abrasive | |
| CN104085686B (en) | A kind of superfine powder pneumatic transport equipment that accurately can control to carry | |
| KR100399697B1 (en) | Device for the Dosing of Granular, Pourable Material, in Particular Blasting Shots | |
| JPS62100321A (en) | Transport system of granular material | |
| CN106185333B (en) | A kind of rotating disc type powdered graphite powder feeder and powder delivery method | |
| CN108914112B (en) | A kind of pocket laser repair device powder conveying system | |
| JPS6317650Y2 (en) | ||
| KR20090030229A (en) | Apparatus for supplying constant amount of abrasives | |
| CN106737232A (en) | A kind of accurate sand feeding device and send sand method | |
| CN204342011U (en) | Resin-oatmeal conveying, feed proportioning system | |
| CN102700954A (en) | Sintering and pelletizing powder receiving, storage and proportioning system | |
| US9795939B2 (en) | Apparatus for mixing and blending of an additive material into a fluid and method | |
| CN109250506A (en) | A kind of material-transporting system preventing material plate knot | |
| CN106743668A (en) | Powder conveying device | |
| CN209530774U (en) | A kind of powder preparation process automatic recipe maker | |
| CN110844604A (en) | Pressurized pneumatic powder feeding device and method | |
| CN207957172U (en) | A kind of dynamic measurement system for pulverulent material | |
| CN205982205U (en) | Whirl fluidized bed solid particle generator | |
| CN207957112U (en) | A kind of superfine powder dynamic measuring feeding system of anti-airborne dust | |
| CN205087581U (en) | Desulfurization agent powder stores and conveyor | |
| CN209052099U (en) | A kind of material-transporting system preventing material plate knot | |
| CN207242969U (en) | A kind of metering system | |
| CN210001188U (en) | pneumatic conveying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |