CN209886622U - Online cleaning device for screen of lost foam casting sand box - Google Patents
Online cleaning device for screen of lost foam casting sand box Download PDFInfo
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- CN209886622U CN209886622U CN201822232805.5U CN201822232805U CN209886622U CN 209886622 U CN209886622 U CN 209886622U CN 201822232805 U CN201822232805 U CN 201822232805U CN 209886622 U CN209886622 U CN 209886622U
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Abstract
The utility model discloses an online cleaning device for a screen of a lost foam casting sand box, which consists of a butt joint, a butt joint mechanism, an expansion joint, an electromagnetic quick-opening valve, a pressure tank, a solenoid valve and a travel switch, wherein the air inlet of the pressure tank in the direction of a horizontal central axis is connected with a compressed air pipeline of a casting workshop, the solenoid valve is installed on the compressed air pipeline, the air outlet of the pressure tank is connected with the butt joint through the pipeline and the expansion joint, the expansion joint is positioned in the middle of the pipeline and is communicated with the pipeline, the electromagnetic quick-opening valve is installed on the pipeline connecting the pressure tank with the expansion joint, two ends of the butt joint mechanism are respectively connected with two ends of the expansion joint, the travel switch is arranged on a cleaning station to control the operation of the butt joint mechanism, and realize the butt joint and the separation of the suction hole of the sand box, the utility model can clean the sand box online, reducing environmental pollution.
Description
Technical Field
The utility model relates to an operation maintenance field of lost foam casting production line, in particular to online cleaning device of lost foam casting sand box screen cloth.
Background
The lost foam casting is a green and environment-friendly casting production process, has the characteristics of high automation degree, low labor intensity of workers and high production efficiency, and is developed rapidly in recent years. One of the main devices of the lost foam casting is a casting production line, and the sand box is an important device on the lost foam casting production line, and generally, dozens of sand boxes are arranged on the lost foam casting production line, and more than dozens of sand boxes are about two hundred. According to the size and the structure of a casting, the negative pressure degree generally reaches 0.03-0.05 MPa, and the requirement on the sealing property of the sand box is very strict. The sand box of the lost foam casting production line is of a box structure with an opening on the upper surface, the box walls on the side surfaces are double layers, and a plurality of screen meshes are arranged on the box walls on the inner layer at intervals. The sand box screen cloth adopts the silk screen that the stainless steel wire was woven, when guaranteeing that the sand grain can not see through the screen cloth, requires the gas permeability good, and the mesh number of the silk screen of general adoption is 50 ~ 100 meshes, is equipped with 1 ~ 2 aspirating holes on the outer tank wall. After the molding is finished, the upper opening of the sand box is covered with a plastic film, and before the casting, the automatic butt joint mechanism of the vacuum negative pressure system can be automatically butted with the air suction hole of the sand box. After the vacuum negative pressure system starts to work, a reliable negative pressure environment can be formed in the sand box, and the negative pressure degree in the sand box can meet the requirement. Once the negative pressure degree can not meet the requirement, the molding sand in the sand box can not be firmly fastened and molded, and under the scouring of molten iron in the pouring process, some scattered sand grains can enter a cavity, casting defects such as sand holes and sand inclusion can be formed in a casting, and the casting mold can be instantly collapsed in serious cases to cause the rejection of products.
The reasons for the negative pressure not meeting the requirement are as follows: 1. air leakage of the vacuum pipeline system; 2. the sand box is not tightly sealed; 3. and (5) blocking the screen of the sand box. Because the vacuum pipeline system and the sand box are both made of steel pipes and steel plates by welding, the problems of air leakage and poor sealing can not occur under ordinary conditions. The practice in production well proves that the blockage of the screen of the sand box is the main reason for the unsatisfactory negative pressure inside the sand box. Although the molding sand is subjected to screening, dust removal and other treatment links, under the action of molten metal in the casting production process, the sand is in a cold-hot alternating state, so that the sand is broken to form a part of dust or sand with smaller granularity. Therefore, after each time of box making and sand shakeout, some sand grains with small particle sizes inevitably enter the screen holes of the screen under the action of negative pressure and are clamped in the screen holes. Over time, the screen of the sand core is blocked, so that the negative pressure in the sand box can not meet the requirement during pouring, and the sand box is collapsed.
To solve this problem, a method of manually cleaning the inside of the flask by a worker who enters the inside of the flask and manually brushing the screen with a wire brush is generally used. For a larger sand box, more than ten screens are usually arranged, the total area can reach 1-2 square meters, the labor intensity of workers is higher, sand grains are clamped into the screens from outside to inside, brushing and sweeping of the workers can only be from outside to inside, therefore, the treatment method has a poor effect, only a small part of sand grains can fall off, in addition, the screen is damaged by the brushing and sweeping mode, larger dust can be generated in the sand box, the workers operate in the sand box, and the working environment is poor. Therefore, the research on the automatic online sand box screen cleaning device is of great significance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an automatic online cleaning device of sand box screen cloth is provided.
In order to achieve the above object, the present invention provides the following technical solutions: an online cleaning device for a screen of a lost foam casting sand box comprises a butt joint, a butt joint mechanism, an expansion joint, a pressure tank, an electromagnetic valve and a travel switch, the air inlet of the pressure tank is connected with a compressed air pipeline of a casting shop, the electromagnetic valve is arranged on the compressed air pipeline, the air outlet of the pressure tank is connected with the butt joint through a pipeline and an expansion joint, the expansion joint is positioned in the middle of the pipeline and communicates the pipeline, the butt joint mechanism is an expansion device, two ends of the butt joint mechanism are respectively connected with two ends of the telescopic joint, the travel switch is arranged on the cleaning station, after the sensor on the side surface of the sand box on the production line senses the sand box, a control signal is sent out to control the operation of the butt joint mechanism, the butt joint mechanism drives the telescopic joint to move telescopically, and the telescopic joint drives the butt joint to move forwards and backwards, so that butt joint and separation of the sand box suction hole are realized.
Preferably, the front end of the butt joint is provided with a rubber pad.
Preferably, the travel switch and the sand box bottom sensor perform position sensing through photoelectricity, and a control signal is sent through a signal line after sensing.
Preferably, the upper part of the sand box is provided with a dust hood for collecting, processing and cleaning air flow and dust rushed out.
Preferably, an electromagnetic quick-opening valve is arranged on a pipeline connecting the pressure tank and the expansion joint.
The beneficial effect of adopting above technical scheme is: the utility model discloses can realize the online clearance of lost foam casting sand box screen cloth, the impact force of in-process through compressed air flow has the effectual characteristics of clearance, and simultaneously, cleaning device passes through the butt joint and the separation of travel switch automatic control cleaning device and sand box, convenient and fast, degree of automation is high, and the air current that finally clears up the back and dust are collected by the dust excluding hood on sand box upper portion, discharge after dust pelletizing system handles, have avoided causing the pollution to the air.
Drawings
Fig. 1 is a plan view of the present invention.
Wherein, 1 comprises a sand box, 2 comprises a screen, 3 comprises a sand box air suction hole, 4 comprises a rubber pad, 5 comprises a butt joint, 6 comprises a butt joint mechanism, 7 comprises an expansion joint, 8 comprises an electromagnetic quick-opening valve, 9 comprises a pressure tank, 10 comprises an electromagnetic valve, 11 comprises a compressed air pipeline and 12 comprises a travel switch.
Detailed Description
The preferred embodiment of the online cleaning device for the screen of the lost foam casting sand box of the invention is described in detail with reference to the attached drawings.
Fig. 1 shows the utility model relates to a lost foam casting sand box screen cloth on-line cleaning device's embodiment: the online cleaning device for the screen of the lost foam casting sand box comprises a butt joint 5, a butt joint mechanism 6, an expansion joint 7, an electromagnetic quick-opening valve 8, a pressure tank 9, an electromagnetic valve 10 and a travel switch 12, wherein an air inlet of the pressure tank 9 in the horizontal central axis direction is connected with a compressed air pipeline 11 of a casting workshop, the electromagnetic valve 10 is installed on the compressed air pipeline 11, an air outlet of the pressure tank 9 is connected with the butt joint 5 through the pipeline and the expansion joint 7, the expansion joint 7 is located in the middle of the pipeline and communicates the pipeline, the electromagnetic quick-opening valve 8 is installed on the pipeline connecting the pressure tank 9 and the expansion joint 7, the butt joint mechanism 6 is an expansion device, two ends of the butt joint mechanism 6 are respectively connected with two ends of the expansion joint 7, the travel switch 12 is arranged on a cleaning station and sends a control signal to control the operation of the butt joint mechanism 6 after being induced by an, the butt joint mechanism 6 drives the telescopic joint 7 to perform telescopic motion, and the telescopic motion of the telescopic joint 7 drives the butt joint 5 to move forward and backward, so that butt joint and separation of the butt joint 5 and the sand box suction hole 3 are realized.
The utility model discloses be the clearance station of sand box 1 at the mounted position of production line, set up the position at the anterior 2 ~ 4 sand box pitches of lost foam casting production line molding station. Before the operation, firstly, the electromagnetic quick-opening valve 8 is closed to seal the outlet end of the pressure tank 9, then the electromagnetic valve 10 is opened, the pressure tank 9 is communicated with a compressed air pipeline 11 in a casting workshop, the pressure in the pressure tank 9 reaches the pressure in the compressed air pipeline 11, generally 0.6-0.7 MPa, after the pressure is balanced, the electromagnetic valve 10 is closed, the connection between the pressure tank 9 and the compressed air pipeline 11 is disconnected, the compressed air stored in the pressure tank 9 is kept at the rated pressure, at the moment, the pressure enters the preparation working state of the online cleaning device, because the sand box 1 of the lost foam casting production line is operated step by step according to a certain working rhythm, after the sand box 1 is operated to a cleaning station, a travel switch 12 is induced by an inductor at the bottom of the sand box 1, a control signal is sent through a signal line to control the butt joint mechanism 6 of the cleaning device, so that the telescopic joint 7 is extended to drive the butt joint 5 to move forwards, the butt joint is in butt joint with the air pumping hole 3 of the sand box 1, effective sealing of the butt joint head 5 and the air pumping hole 3 is achieved through the rubber pad 4, after the butt joint head 5 and the sand box air pumping hole 3 are in butt joint sealing, the electromagnetic quick-opening valve 8 executes action, the air outlet of the pressure tank 9 is rapidly opened, a large amount of compressed air is instantly converted into kinetic energy through potential energy, enters the double-layer box wall of the sand box 1 through the sand box air pumping hole 3 and is finally discharged from the screen 2, in the process, instant powerful airflow impact is formed on the screen 2, due to the fact that the flushing direction of the airflow is opposite to the clamping direction of the sand grains, the sand grains clamped into the screen 2 rapidly drop under the powerful airflow impact, the purpose of rapidly cleaning the screen is achieved, flushed airflow and dust are collected by a dust hood on the upper portion of the sand box 1 and are discharged after being processed by a.
After the sand box 1 is cleaned once, the abutting mechanism 6 of the cleaning device retreats to enable the expansion joint 7 to retract, the abutting joint 5 is driven to retreat to be separated from the air suction hole 3 of the sand box 1, meanwhile, the electromagnetic quick-opening valve 8 is closed to enable the air outlet of the pressure tank 9 to be closed, then the electromagnetic valve 10 is opened, the pressure tank 9 is communicated with the compressed air pipeline 11 to inflate the pressure tank 9, the compressed air stored in the pressure tank 9 is restored to the rated pressure again, so that the cleaning process of the screen 2 of one sand box 1 is completed, the lost foam casting production line continues to operate according to the preset beat, and the cleaning process of the screen 2 of the next sand box 1 is started after the next sand box 1 operates to the cleaning station.
To the sand box that is provided with more than one aspirating hole, can block up all the other aspirating holes with the rubber pad, then use cleaning device clear up, perhaps set up two sets cleaning device, the clearance of sand box is carried out in order, the clearance effect can be improved.
The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept, and these all fall into the protection scope of the present invention.
Claims (5)
1. The utility model provides an online cleaning device of lost foam casting sand box screen cloth, includes butt joint (5), docking mechanism (6), telescopic joint (7), electromagnetism quick-open valve (8), overhead tank (9), travel switch (12), its characterized in that: the air inlet of the pressure tank (9) is connected with a compressed air pipeline (11) of a casting shop, the electromagnetic valve (10) is arranged on a compressed air pipeline (11), the air outlet of the pressure tank (9) is connected with the butt joint (5) through a pipeline and an expansion joint (7), the expansion joint (7) is positioned in the middle of the pipeline and communicates the pipeline, the butt joint mechanism (6) is an expansion device, two ends of the butt joint mechanism (6) are respectively connected with two ends of the telescopic joint (7), the travel switch (12) is arranged on a cleaning station, after the induction with the inductor on the side surface of the sand box (1) on the production line, a control signal is sent out to control the operation of the butt joint mechanism (6), the butt joint mechanism (6) drives the telescopic joint (7) to do telescopic motion, and the telescopic motion of the telescopic joint (7) drives the butt joint head (5) to move forward and backward, so that butt joint and separation of the butt joint head (5) and the sand box suction hole (3) are realized.
2. The online cleaning device for the screen of the lost foam casting sand box of claim 1, which is characterized in that: the front end of the butt joint (5) is provided with a rubber pad (4).
3. The online cleaning device for the screen of the lost foam casting sand box of claim 1, which is characterized in that: the travel switch (12) and the sand box (1) side sensor perform position sensing through photoelectricity, and control signals are sent through signal lines after sensing.
4. The online cleaning device for the screen of the lost foam casting sand box of claim 1, which is characterized in that: and the upper part of the sand box (1) is provided with a dust hood for collecting and processing air flow and dust flushed out after cleaning.
5. The online cleaning device for the screen of the lost foam casting sand box of claim 1, which is characterized in that: and an electromagnetic quick-opening valve (8) is arranged on a pipeline connecting the pressure tank (9) and the telescopic joint (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822232805.5U CN209886622U (en) | 2018-12-28 | 2018-12-28 | Online cleaning device for screen of lost foam casting sand box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822232805.5U CN209886622U (en) | 2018-12-28 | 2018-12-28 | Online cleaning device for screen of lost foam casting sand box |
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| Publication Number | Publication Date |
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| CN209886622U true CN209886622U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822232805.5U Active CN209886622U (en) | 2018-12-28 | 2018-12-28 | Online cleaning device for screen of lost foam casting sand box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536217A (en) * | 2020-12-01 | 2021-03-23 | 安徽德鑫源食品有限公司 | Continuous multi-stage serial flour screening device |
-
2018
- 2018-12-28 CN CN201822232805.5U patent/CN209886622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112536217A (en) * | 2020-12-01 | 2021-03-23 | 安徽德鑫源食品有限公司 | Continuous multi-stage serial flour screening device |
| CN112536217B (en) * | 2020-12-01 | 2021-08-31 | 安徽德鑫源食品有限公司 | Continuous multi-stage serial flour screening device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Effective date of registration: 20211125 Address after: No. 58, Fumin Branch Road, Hengsha Township, Chongming District, Shanghai, 201914 (Shanghai Hengtai Economic Development Zone) Patentee after: Tanyu Metallurgical Technology (Shanghai) Co.,Ltd. Address before: 062353 one kilometer south of Suning County, Hengshui City, Hebei Province Patentee before: HEBEI TIANYU HIGH-TECH METALLURGICAL CASTING Co.,Ltd. |
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| TR01 | Transfer of patent right |