CN210155065U - Molding sand water content value and CB value on-line measuring device - Google Patents
Molding sand water content value and CB value on-line measuring device Download PDFInfo
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- CN210155065U CN210155065U CN201920662385.6U CN201920662385U CN210155065U CN 210155065 U CN210155065 U CN 210155065U CN 201920662385 U CN201920662385 U CN 201920662385U CN 210155065 U CN210155065 U CN 210155065U
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- sand
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- moisture
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- 239000003110 molding sand Substances 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 7
- 239000004576 sand Substances 0.000 claims abstract description 89
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000005070 sampling Methods 0.000 claims abstract description 32
- 238000001125 extrusion Methods 0.000 claims abstract description 29
- 238000007790 scraping Methods 0.000 claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims 1
- 238000012797 qualification Methods 0.000 abstract description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 2
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 2
- 241001330002 Bambuseae Species 0.000 abstract description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 2
- 239000011425 bamboo Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000013522 software testing Methods 0.000 abstract description 2
- 238000012937 correction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model provides a molding sand moisture value and CB value on-line measuring device, including roller mill, sampling screw rod, sampling motor, first sand guide chute, flat sand scraping head, scraping oil cylinder, electrode moisture detector, test section of thick bamboo, sand extrusion head, displacement sensor, extrusion cylinder and second sand guide chute, roller mill one side is equipped with the through-hole, is connected with the sampling screw rod in the through-hole, sampling screw rod one end stretches into the roller mill, and the other end is connected on the output shaft of sampling motor; and a first sand guide groove is arranged under the sampling screw, and the outlet of the first sand guide groove is opposite to the opening of the test cylinder. The utility model discloses an at the mulling in-process sample to measure the moisture content and the CB value of sample, judge whether the molding sand is qualified, replaced original artifical sample, efficiency of software testing is high, and it is accurate to measure, has guaranteed the stable performance of molding sand, has improved the fashioned qualification rate of follow-up product.
Description
Technical Field
The utility model relates to a molding sand detects technical field, in particular to molding sand moisture value and CB value on-line measuring device.
Background
The CB value (molding sand compaction rate) is the percentage of volume change of the molding sand in an extrusion state, is the most representative value in the molding sand characteristic values, and the value of the CB value is related to the addition amount of mixing water.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a molding sand moisture value and CB value on-line measuring device.
In order to achieve the above object, the present invention provides the following technical solutions:
a molding sand moisture value and CB value online detection device comprises a sand mixer, a sampling screw, a sampling motor, a first sand guide chute, a flat sand scraping head, a scraping oil cylinder, an electrode moisture detector, a test cylinder, a sand extrusion head, a displacement sensor, an extrusion oil cylinder and a second sand guide chute, wherein a through hole is formed in one side of the sand mixer, the sampling screw is connected in the through hole, one end of the sampling screw extends into the sand mixer, and the other end of the sampling screw is connected to an output shaft of the sampling motor; a first sand guiding groove is arranged right below the sampling screw, an outlet of the first sand guiding groove is opposite to an opening of the test cylinder, a horizontal mounting plate is arranged at the opening of the test cylinder, the opening is flush with the horizontal mounting plate, a scraping oil cylinder is fixed on the mounting plate, a flat sand scraping head is arranged at one end of the scraping oil cylinder, and the lower surface of the flat sand scraping head is in contact with the horizontal mounting plate; the sand extrusion device is characterized in that an extrusion oil cylinder is arranged below the test cylinder, a sand extrusion head is connected to a pushing handle of the extrusion oil cylinder, and the sand extrusion head extends into the test cylinder and is matched with the inner wall of the test cylinder.
Furthermore, an electrode moisture detector is installed on the side wall of the test cylinder.
Furthermore, a displacement sensor is arranged on a pushing handle of the extrusion oil cylinder.
Further, a second sand guide groove is formed in one side of the test cylinder, an opening of the second sand guide groove is connected with the horizontal mounting plate, and molding sand can enter the second sand guide groove along the horizontal mounting plate.
Furthermore, the second sand guide chute and the scraping oil cylinder are distributed on the left side and the right side of the test cylinder.
Furthermore, the test cylinder is made of alumina ceramic.
Furthermore, the first sand guide groove and the second sand guide groove are fixed through a support frame.
The utility model discloses the beneficial effect who brings is: through taking a sample at the mulling in-process to measure the moisture content and the CB value of sample, judge whether the molding sand is qualified, replaced original artifical sample, efficiency of software testing is high, and measure accurately, guaranteed the stable performance of molding sand, improved the fashioned qualification rate of follow-up product.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Reference numbers in the figures:
1. a sand mixer; 2. sampling a screw rod; 3. sampling a motor; 4. a first sand guide chute; 5. a sand leveling and scraping head; 6. scraping the oil cylinder; 7. an electrode moisture detector; 8. a test cartridge; 9. a sand extrusion head; 10. a displacement sensor; 11. extruding the oil cylinder; 12. and a second sand guide chute.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
As shown in fig. 1, an online detection device for a moisture value and a CB value of molding sand comprises a sand mixer 1, a sampling screw 2, a sampling motor 3, a first sand guiding groove 4, a flat sand scraping head 5, a scraping oil cylinder 6, an electrode moisture detector 7, a test cylinder 8, a sand extrusion head 9, a displacement sensor 10, an extrusion oil cylinder 11 and a second sand guiding groove 12, wherein a through hole is formed in one side of the sand mixer 1, the sampling screw 2 is connected in the through hole, one end of the sampling screw 2 extends into the sand mixer 1, and the other end of the sampling screw 2 is connected to an output shaft of the sampling motor 3; a first sand guiding groove 4 is arranged right below the sampling screw 2, the outlet of the first sand guiding groove 4 is over against the opening of a test cylinder 8, a horizontal mounting plate is arranged at the opening of the test cylinder 8, the opening is flush with the horizontal mounting plate, a scraping oil cylinder 6 is fixed on the mounting plate, a flat sand scraping head 5 is arranged at one end of the scraping oil cylinder 6, and the lower surface of the flat sand scraping head 5 is in contact with the horizontal mounting plate; the sand extrusion device is characterized in that an extrusion oil cylinder 11 is arranged below the test cylinder 8, a sand extrusion head 9 is connected to a pushing hand of the extrusion oil cylinder 11, and the sand extrusion head 9 extends into the test cylinder 8 and is matched with the inner wall of the test cylinder 8.
And an electrode moisture detector 7 is arranged on the side wall of the test cylinder 8.
And a displacement sensor 10 is arranged on a pushing hand of the extrusion oil cylinder 11.
The test section of thick bamboo 8 one side is equipped with second sand guide chute 12, the opening and the horizontal mounting board of second sand guide chute 12 link to each other, and the molding sand can be followed in horizontal mounting board gets into second sand guide chute 12.
The second sand guide chute 12 and the scraping oil cylinder 6 are distributed on the left side and the right side of the test cylinder 8.
The test cylinder 8 is made of alumina ceramic.
The first sand guide chute 4 and the second sand guide chute 12 are fixed by a support frame.
The present invention will be further explained with reference to the drawings and the working principle. (operation and principle)
After the molding sand is mixed by the sand mixer 1, the sampling motor 3 is started, the sampling screw 2 rotates to enter the sand mixer 1 and then rotates out to rotate the molding sand in the sand mixer to the outside, the molding sand which rotates to the outside falls off from the sampling screw 2, enters the first sand guide chute 4 and finally falls into the test cylinder 8; then the scraping oil cylinder 6 pushes the sand leveling scraping head 5 to advance, excess molding sand at the upper opening of the test cylinder 8 is scraped and pressed, and the excess molding sand falls into the second sand guide chute 12; at this time, the squeeze cylinder 10 is raised from the home position to push the sand squeeze head 9 to squeeze the molding sand in the test cylinder 8 and form a sand lump (4 seconds pause), the displacement sensor 10 records the displacement of the squeeze head and calculates the CB value,
calculating the CB value:
conditions are as follows: lift of squeeze cylinder
The content is as follows: the cylinder elevation position (100 mm =1000 pulses) was set to the maximum value of the encoder and measured
The formula: CB value (%) = position of rise/1000 XCB at the time of CB measurement correction (set value)%
Meanwhile, the electrode moisture detector 7 will measure the moisture value, if in the specified range, the sand can be discharged, if not in the range, the moisture adding amount is calculated and the mixing is continued until the moisture reaches the standard and then the discharge is carried out;
1. and (3) moisture determination:
conditions are as follows: calculating average water content according to the correction and set value of sand temperature
The content is as follows: temperature-corrected moisture voltage [ V ] - - - - - -md
md=On-Bn*(tp-30)
On measured moisture Voltage [ V ] - - - -measured value
Bn is a temperature correction coefficient [ V/10 ℃ C ] - - - - - -measured value
Tp Sand temperature [ ° C ] - - - - - - -measured value
Note: zero processing when md is negative
Calculating the water content: m = md/Sn + Dn
Sn moisture gradient [ V/% ] - - -set value
Dn moisture intercept [% ] - - -set value
Note: zero treatment when m is negative
Average moisture: mn = Σ m/N
Sigma is the calculated water sum [% ] - - -the calculated value
N is the number of data-measured value
2. Calculating the water injection amount (Q):
y = mo-mn (target moisture-average moisture)
Q = 1/100Y g (in liters) g is the sand throughput in kilograms.
Finally, the flat sand scraping head 5 retreats to leave the position of the upper opening of the test cylinder 8, the extrusion oil cylinder 10 rises and extrudes the molding sand test block in the test cylinder 8, and the operation is stopped until the sand extrusion head 9 is level with the upper opening of the test cylinder; at this time, the scraping cylinder 6 moves forward again and pushes the molding sand test block and the residual sand into the second sand guide chute 12, and then, the molding sand test block and the residual sand quickly return to the original position, and the squeezing cylinder 10 returns to the original position at the same time, thereby completing the measurement.
The device improves the one-time forming qualification rate in casting engineering, the qualification rate is increased to 96.3% from 95.8% before the device is added, and meanwhile, the production efficiency and the operation safety are also improved.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions thought by the inventive work within the technical scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (7)
1. The online detection device for the moisture value and the CB value of the molding sand is characterized by comprising a sand mixer (1), a sampling screw (2), a sampling motor (3), a first sand guiding groove (4), a flat sand scraping head (5), a scraping oil cylinder (6), an electrode moisture detector (7), a test cylinder (8), a sand extrusion head (9), a displacement sensor (10), an extrusion oil cylinder (11) and a second sand guiding groove (12), wherein a through hole is formed in one side of the sand mixer (1), the sampling screw (2) is connected in the through hole, one end of the sampling screw (2) extends into the sand mixer (1), and the other end of the sampling screw is connected to an output shaft of the sampling motor (3); a first sand guiding groove (4) is arranged right below the sampling screw (2), an outlet of the first sand guiding groove (4) is over against an opening of a test cylinder (8), a horizontal mounting plate is arranged at the opening of the test cylinder (8), the opening is flush with the horizontal mounting plate, a scraping oil cylinder (6) is fixed on the mounting plate, a flat sand scraping head (5) is arranged at one end of the scraping oil cylinder (6), and the lower surface of the flat sand scraping head (5) is in contact with the horizontal mounting plate; the sand extrusion device is characterized in that an extrusion oil cylinder (11) is arranged below the test cylinder (8), a sand extrusion head (9) is connected to a pushing hand of the extrusion oil cylinder (11), and the sand extrusion head (9) extends into the test cylinder (8) and is matched with the inner wall of the test cylinder (8).
2. The on-line testing device for moisture value and CB value of molding sand according to claim 1, wherein an electrode moisture tester (7) is installed on a side wall of said test cylinder (8).
3. The on-line testing device for moisture value and CB value of molding sand according to claim 1, wherein a displacement sensor (10) is provided on a push handle of said squeeze cylinder (11).
4. The molding sand moisture value and CB value on-line measuring device as claimed in claim 1, wherein said test cylinder (8) is provided with a second sand guide chute (12) at one side, and an opening of said second sand guide chute (12) is connected to a horizontal mounting plate along which molding sand can be introduced into said second sand guide chute (12).
5. The on-line sand moisture value and CB value measuring device according to claim 4, wherein said second sand guide grooves (12) and said lapping cylinders (6) are disposed on the left and right sides of said test cylinder (8).
6. The on-line testing device for moisture value and CB value of molding sand according to claim 4, wherein said test cylinder (8) is made of alumina ceramics.
7. The sand moisture value and CB value on-line measuring device according to claim 1, wherein the first sand guide chute (4) and the second sand guide chute (12) are fixed by a support bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920662385.6U CN210155065U (en) | 2019-05-10 | 2019-05-10 | Molding sand water content value and CB value on-line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920662385.6U CN210155065U (en) | 2019-05-10 | 2019-05-10 | Molding sand water content value and CB value on-line measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210155065U true CN210155065U (en) | 2020-03-17 |
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ID=69757693
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920662385.6U Expired - Fee Related CN210155065U (en) | 2019-05-10 | 2019-05-10 | Molding sand water content value and CB value on-line measuring device |
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| Country | Link |
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| CN (1) | CN210155065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983967A (en) * | 2020-08-17 | 2020-11-24 | 于彦奇 | Intelligent system and control method for controlling quality of molding sand in foundry |
-
2019
- 2019-05-10 CN CN201920662385.6U patent/CN210155065U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111983967A (en) * | 2020-08-17 | 2020-11-24 | 于彦奇 | Intelligent system and control method for controlling quality of molding sand in foundry |
| CN111983967B (en) * | 2020-08-17 | 2022-03-29 | 于彦奇 | Intelligent system and control method for controlling quality of molding sand in foundry |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200317 |
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| CF01 | Termination of patent right due to non-payment of annual fee |