Negative pressure quantitative adjustment and fine adjustment system for vacuum sizing

Abstract

The invention relates to a negative pressure quantitative adjustment and fine adjustment system for vacuum sizing of a drip tape production line, and belongs to the field of mechano-electronics. By adopting a mode of combining a mechanical design technology, a microelectronic technology, a communication technology, a pneumatic technology and the like, quantitative adjustment and fine adjustment of the vacuum degree in the vacuum sizing box are realized through independent work or matched and combined work of the air inlet nozzles with different calibers; and the combination mode of the air inlet nozzles stored in the EEPROM storage chip is called according to the production requirements of different pipe diameters and wall thicknesses, so that the production efficiency is effectively improved, and the purposes of accurately determining the diameter and the pipe wall thickness of the drip irrigation belt production line are achieved. The whole system has the advantages of high precision, low cost, convenience in use, high efficiency and the like, and has a wide market prospect.

Description

Technical Field

[0001] This invention relates to the field of mechanical and electronic technology, and specifically to a negative pressure quantitative adjustment and fine-tuning system for vacuum sizing in drip irrigation tape production lines. Background Technology

[0002] Drip irrigation is an irrigation method that delivers water and nutrients to the crop root zone through a pipeline system and drip tape installed on the pipes, according to the crop's water requirements, in a uniform and slow manner. Drip irrigation is an effective water-saving and labor-saving irrigation technology, and it plays a significant role in increasing crop yields. Therefore, drip tape has become an important component of modern agricultural irrigation systems. However, during the production process of drip tape, due to the high-speed operation of the production equipment, problems such as uneven tape wall thickness and large pipe diameter errors often occur. The main reason for these problems is the inaccurate manual adjustment of the vacuum degree in the vacuum sizing box. Therefore, achieving accurate adjustment of the vacuum degree in the vacuum sizing box according to the production requirements of different pipe diameters and wall thicknesses of drip tape is one of the important measures to improve the production precision of drip tape.

[0003] Currently, there are two main methods for adjusting the vacuum level of the vacuum sizing box in a drip irrigation tape production line. The first method involves manually rotating a ball valve to adjust the air inlet opening, combined with observing the vacuum pressure gauge to regulate the vacuum level within the sizing box. This requires frequent adjustments when producing different pipe diameters, resulting in instability and inaccuracy, and relies heavily on manual adjustment experience. The second method uses a servo motor to drive the ball valve, combined with a vacuum pressure sensor to adjust the vacuum level. However, this method is costly and prone to vacuum fluctuations. Therefore, there is an urgent need to explore stable, reliable, and flexible vacuum regulation technology using intelligent, precise, and low-cost methods. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a negative pressure quantitative adjustment and fine-tuning system. By setting up a series of air inlets with different diameters, and using solenoid valves to control the airflow through these inlets, different air intake volumes can be obtained by having the different diameter inlets work individually or in combination. This achieves the vacuum level required for production of different pipe diameters and wall thicknesses, thus solving the problems of uneven drip tape wall thickness and large diameter errors caused by inaccurate manual adjustment. This improves the precision of the drip tape production line and reduces errors. Furthermore, the operating modes of the air inlets corresponding to different pipe diameters and wall thicknesses are stored in an EEPROM chip. During production, these modes can be invoked according to the production needs of different pipe diameters and wall thicknesses, improving production efficiency and achieving precise sizing and wall thickness determination in the drip tape production line.

[0005] The present invention provides a negative pressure quantitative adjustment and fine-tuning system for vacuum sizing of drip irrigation tape production line, comprising: control system, air inlet box, several solenoid valves (8), air outlet (18), and angle aluminum (9);

[0006] The control system includes a microcontroller, a 24V switching power supply, a DC-DC step-down converter, an inverting driver, a drive optocoupler, an EEPROM storage chip, a MAX485, and a touch screen. The microcontroller controls the drive optocoupler through the inverting driver, and then controls the opening and closing of the solenoid valve (8) connected to it.

[0007] The air intake box includes a box body (19), a box cover (26), an air outlet pipe (15), a control line (23), and a muffler (13) installed on the top of the box body (19). The solenoid valve (8) is connected to the air outlet (18) and is placed inside the box body (19). The control system controls the opening and closing of the solenoid valve (8) through the control line (23).

[0008] The solenoid valve (8) includes an air inlet, an air outlet, an air inlet nozzle (12), a quick connector (21), an air pipe (25), a threaded hole (28), and a control line (23). The air inlet nozzle (12) is located at the air inlet of the solenoid valve, and the air outlet of the solenoid valve is connected to the air pipe (25) through the quick connector (21).

[0009] The air vent (18) includes an air inlet (16), an air outlet (17), an air vent mounting hole (20), a quick connector (21), and an air pipe (25). The air inlet (16) is connected to the air pipe (25) at the air outlet of the solenoid valve through the quick connector (21). Outside air enters the air inlet (16) from the air outlet of the solenoid valve through the air pipe (25). The air inlet (16) and the air outlet (17) are internally interconnected. The air outlet (17) is connected to the air outlet pipe (15) through the quick connector (21). The other end of the air outlet pipe (15) is connected to the vacuum sizing box.

[0010] The angle aluminum (9) includes an angle aluminum mounting hole (10) and a solenoid valve mounting hole (11). The solenoid valve (8) is installed on the angle aluminum (9) through the threaded hole (28) and the solenoid valve mounting hole (11). The angle aluminum (9) is installed at the bottom of the box 19 through the angle aluminum mounting hole (10).

[0011] The box body (19) includes an angle aluminum mounting hole (10), an air exhaust mounting hole (20), sound insulation cotton (24), and a box body fixing hole (27). The box cover (26) is installed on the top of the box body (19) through the mounting hole. The angle aluminum (9) is installed at the bottom of the box body (19) through the angle aluminum mounting hole (10). The sound insulation cotton (24) is laid around the inner wall of the box body (19) and the inner wall of the box cover (26). The air exhaust (18) is fixed to the center of the bottom of the box body (19) through the air exhaust mounting hole (20). The box body (19) is fixed to the vacuum sizing box of the drip irrigation tape production line through the box body fixing hole (27).

[0012] The plurality of air inlets (12) are provided with air inlet diameters (22) of different sizes. Preferably, a plurality of large-size air inlet diameters (22) and a plurality of small-size air inlet diameters (22) are set on different air inlets (12) to obtain a plurality of large-flow air inlets (12) and small-flow fine-tuning air inlets (12). By controlling the large-flow air inlets (12) to work alone or the large-flow air inlets (12) and small-flow fine-tuning air inlets (12) to work in combination, the required air flow is obtained to achieve the required vacuum degree and to achieve the purpose of precise sizing and wall thickness determination. The combination mode of the air inlets (12) with different air flow is written into 24C02 through IIC.

[0013] The air inlet (16) is symmetrically distributed on both sides of the air outlet (18), and the air inlet (16) and the air outlet (17) are interconnected.

[0014] The surface of the silencer (13) has a granular structure, and outside air can enter the housing 19 through the silencer 13, which can reduce the noise in the production process and filter out dust and other impurities that enter the housing 19, thus extending the service life of the device.

[0015] Compared with existing technologies, this invention combines mechanical design, microelectronics, communication, and pneumatic technologies. It achieves quantitative adjustment and fine-tuning of the vacuum level within the vacuum sizing chamber by using air inlets of different diameters, either individually or in combination. Furthermore, it utilizes air inlet combinations stored in an EEPROM chip to meet production requirements for different pipe diameters and wall thicknesses, effectively improving production efficiency and achieving precise sizing and wall thickness determination in drip irrigation tape production lines. The system as a whole boasts advantages such as high precision, low cost, ease of use, and high efficiency, and has broad market prospects. Attached Figure Description

[0016] Figure 1 Schematic diagram of the control board for the negative pressure quantitative regulation and fine-tuning system;

[0017] Figure 2 Schematic diagram of the intake box for the negative pressure quantitative regulation and fine-tuning system;

[0018] Figure 3 This is a top view of the enclosure;

[0019] Figure 4 This is a schematic diagram of the exhaust structure;

[0020] Figure 5 This is a schematic diagram of the external connecting parts of a solenoid valve.

[0021] Figure 6 This is a schematic diagram of an angle aluminum structure;

[0022] Attached reference numerals: 8. Solenoid valve; 9. Angle aluminum; 10. Angle aluminum mounting hole; 11. Solenoid valve mounting hole; 12. Air inlet; 13. Silencer; 15. Air outlet pipe; 16. Air inlet; 17. Air outlet; 18. Air exhaust; 19. Housing; 20. Air exhaust mounting hole; 21. Quick connector; 22. Air inlet diameter; 23. Control cable; 24. Sound insulation cotton; 25. Air pipe; 26. Housing cover; 27. Housing mounting hole; 28. Threaded hole Detailed Implementation

[0023] To make the objectives, advantages and features of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] The negative pressure quantitative adjustment and fine-tuning system of the present invention is suitable for accurate adjustment of the vacuum degree in the vacuum sizing box in the drip irrigation tape production line.

[0025] The negative pressure quantitative adjustment and fine-tuning system provided by this invention can, during production debugging, obtain different air intake volumes by using air inlets of different diameters or in combination, according to the vacuum requirements of drip irrigation tape with different pipe diameters and wall thicknesses during production. This achieves the vacuum level required for production of different pipe diameters and wall thicknesses, and the operating modes of the air inlets corresponding to different pipe diameters and wall thicknesses are stored in an EEPROM memory chip. In actual production, the control system controls the opening and closing of multiple solenoid valves equipped with air inlets of different air volumes to regulate different air volumes, thereby achieving the required vacuum level. This allows the vacuum sizing box to stably and accurately sizing and determine the wall thickness. Furthermore, it is low in cost and highly efficient.

[0026] The technical solution adopted to achieve the purpose of the present invention includes: the system mainly includes a control system, an air intake box, a solenoid valve 8, an aluminum angle 9, and an air exhaust 18.

[0027] The control system includes a microcontroller, a 24V switching power supply, a DC-DC step-down converter, an inverter driver, a drive optocoupler, solenoid valves, a 24C02, a MAX485, and a touch screen. The 24C02 is connected to the microcontroller via IIC; the MAX485 is connected to the microcontroller via UART; the industrial touch screen is connected to the MAX485 via RS485; the inverter drivers are connected to the microcontroller's I / O ports; the drive optocouplers are connected to the inverter drivers; the solenoid valves are connected to the drive optocouplers; and the DC-DC step-down converter reduces the input 24V DC voltage to 5V to power the microcontroller.

[0028] The air intake box includes a box body 19, a box cover 26, an air outlet pipe 15, a silencer 13, and a control line 23. The box cover 26 is connected to the box body 19 via bolts through mounting holes 14. A silencer 13 is installed on the box cover 26; the silencer 13 has a granular surface, allowing outside air to enter the box body 19, thus reducing noise during production and filtering out dust and other impurities, extending the lifespan of the device. The air outlet pipe 15 is connected to a vacuum sizing box; the control system controls the opening and closing of the solenoid valve 8 inside the box body 19 via the control line 23.

[0029] The housing 19 includes angle aluminum mounting holes 10, air exhaust mounting holes 20, sound insulation cotton 24, and housing mounting holes 27. The angle aluminum 9 is installed at the bottom of the housing 19 through the angle aluminum mounting holes 10; the sound insulation cotton 24 is laid around the inner wall of the housing 19, and the inner wall of the housing cover 26 is also covered with sound insulation cotton 24 to further reduce noise during production; the air exhaust 18 is fixed to the center of the bottom of the housing 19 through the air exhaust mounting holes 20; the housing 19 is fixed to the vacuum sizing box of the drip irrigation tape production line through the housing fixing holes 27.

[0030] The solenoid valve 8 includes an air inlet 12, a quick connector 21, an air pipe 25, a threaded hole 28, and a control line 23. The air inlet of the solenoid valve 8 is connected to the air inlet 12; the air outlet of the solenoid valve 8 is connected to the quick connector 21; the quick connector 21 is connected to the air pipe 25; the other end of the air pipe 25 is connected to the quick connector 21 on the air inlet 16 of the air outlet 18; the air inlet 12 has a different air inlet diameter 22; the control line 23 is connected to the control system, and the control system controls the opening and closing of the solenoid valve 8 through the control line 23.

[0031] The air outlet includes an air inlet 16, an air outlet 17, an air outlet mounting hole 20, a quick connector 21, and an air pipe 25. The air inlet 16 is connected to the quick connector 21; the air inlets 16 are distributed on both sides of the air outlet 18, and the air inlets 16 and the air outlet 17 are internally interconnected; the air pipe 25 is connected to the quick connector 21; the air outlet 17 is connected to the air outlet pipe 15 via the quick connector 21; the other end of the air outlet pipe 15 is connected to the vacuum sizing box.

[0032] The angle aluminum 9 includes angle aluminum mounting holes 10 and solenoid valve mounting holes 11. The solenoid valve 8 is installed on the angle aluminum 9 through the threaded hole 28 and the solenoid valve mounting hole 11; the angle aluminum 9 is installed at the bottom of the inner wall of the housing 19 through the angle aluminum mounting hole 10.

[0033] The inlet diameter 22 at the top of the inlet nozzle 12 determines the single intake volume. By having the inlet nozzle 12 work alone or in combination, that is, by setting up several large-flow nozzles 12 with different diameters and several small-flow fine-tuning nozzles 12 with smaller diameters, the required air volume can be obtained by having the large-flow nozzle 12 work alone or in combination with the small-flow fine-tuning nozzle 12, so as to achieve the required vacuum degree and achieve the purpose of precise sizing and wall thickness determination. The combination mode of the inlet nozzles 12 with different air volumes is written into 24C02 via IIC.

[0034] The actual production operation process of this invention is as follows: Based on different production requirements for drip irrigation tape diameter and wall thickness, the operator controls the microcontroller via RS485 communication using an industrial touchscreen. The microcontroller calls the ventilation combinations stored in the 24C02, and then controls the drive optocoupler via a reverse driver, thereby controlling the opening and closing of the corresponding solenoid valve 8. After the solenoid valve 8 opens, the air inlet 12 draws in external gas through the silencer 13. The drawn-in gas enters the exhaust 18 through the air pipe 25 and air inlet 16, and then enters the vacuum sizing box through the air outlet 17 and air outlet pipe 15, providing a negative pressure environment for the vacuum sizing box. This invention can flexibly achieve the required vacuum level control and adjustment, effectively improving the working efficiency of drip irrigation tape production and increasing the accuracy of drip irrigation tape diameter and wall thickness.

[0035] Meanwhile, the operator can also control the microcontroller via RS485 communication through the industrial touch screen to individually open and close the small-flow fine-tuning nozzle 12 according to the actual production situation, so as to achieve fine adjustment of the vacuum degree, and write the combination mode into 24C02 through IIC.

[0036] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A negative pressure quantitative adjustment and fine-tuning system for vacuum calibrating, characterized in that, Includes a control system, an air intake box, several solenoid valves (8), an exhaust (18), and an aluminum angle (9); The control system includes a microcontroller, a 24V switching power supply, a DC-DC step-down converter, an inverting driver, a drive optocoupler, an EEPROM storage chip, a MAX485, and a touch screen. The microcontroller controls the drive optocoupler through the inverting driver, and then controls the opening and closing of the solenoid valve (8) connected to it. The air intake box includes a box body (19), a box cover (26), an air outlet pipe (15), a control line (23), and a muffler (13) installed on the top of the box body (19). The solenoid valve (8) is connected to the air outlet (18) and is placed inside the box body (19). The control system controls the opening and closing of the solenoid valve (8) through the control line (23). The solenoid valve (8) includes an air inlet, an air outlet, an air inlet nozzle (12), a quick connector (21), an air pipe (25), a threaded hole (28), and a control line (23). The air inlet nozzle (12) is located at the air inlet of the solenoid valve, and the air outlet of the solenoid valve is connected to the air pipe (25) through the quick connector (21). The air outlet (18) includes an air inlet (16), an air outlet (17), an air outlet mounting hole (20), a quick connector (21), and an air pipe (25). The air inlet (16) is connected to the air pipe (25) at the air outlet of the solenoid valve through the quick connector (21). The air inlet (16) and the air outlet (17) are internally interconnected. The air outlet (17) is connected to the air outlet pipe (15) through the quick connector (21). The other end of the air outlet pipe (15) is connected to the vacuum sizing box. The angle aluminum (9) includes an angle aluminum mounting hole (10) and a solenoid valve mounting hole (11). The solenoid valve (8) is installed on the angle aluminum (9) through the threaded hole (28) and the solenoid valve mounting hole (11). The angle aluminum (9) is installed at the bottom of the box 19 through the angle aluminum mounting hole (10).

2. The negative pressure quantitative adjustment and fine-tuning system for vacuum calibrating as described in claim 1, characterized in that, The box body (19) includes an angle aluminum mounting hole (10), an air exhaust mounting hole (20), sound insulation cotton (24), and a box body fixing hole (27). The box cover (26) is installed on the top of the box body (19) through the mounting hole. The angle aluminum (9) is installed at the bottom of the box body (19) through the angle aluminum mounting hole (10). The sound insulation cotton (24) is laid around the inner wall of the box body (19) and the inner wall of the box cover (26). The air exhaust (18) is fixed to the center of the bottom of the box body (19) through the air exhaust mounting hole (20). The box body (19) is fixed to the vacuum sizing box of the drip irrigation tape production line through the box body fixing hole (27).

3. The negative pressure quantitative adjustment and fine-tuning system for vacuum calibrating as described in claim 1, characterized in that, The plurality of air inlets (12) are provided with air inlet diameters (22) of different sizes. Preferably, a plurality of large-size air inlet diameters (22) and a plurality of small-size air inlet diameters (22) are set on different air inlets (12) to obtain a plurality of large-flow air inlets (12) and small-flow fine-tuning air inlets (12). By controlling the large-flow air inlets (12) to work alone or the large-flow air inlets (12) and small-flow fine-tuning air inlets (12) to work in combination, the required air flow is obtained to achieve the required vacuum degree and to achieve the purpose of precise sizing and wall thickness determination. The combination mode of the air inlets (12) with different air flow is written into 24C02 through IIC.

4. The negative pressure quantitative adjustment and fine-tuning system for vacuum calibrating as described in claim 1, characterized in that, The air inlets (16) are symmetrically distributed on both sides of the exhaust (18).

5. The negative pressure quantitative adjustment and fine-tuning system for vacuum calibrating as described in claim 1, characterized in that, The surface of the muffler (13) has a granular structure.

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