Air pressure regulating device for air-jet looms

Abstract

This utility model discloses an air pressure regulating device for an air-jet loom, comprising a support base (1), on the top surface of which a main nozzle (2) and an auxiliary nozzle (3) are mounted; a pressure sensor (4) is installed inside the main nozzle (2), and a main air pipe (5) is connected to the main nozzle (2); a pressure regulating valve (6) is installed on the main air pipe (5), and the pressure regulating valve (6) is electrically connected to the pressure sensor (4); an auxiliary air pipe (7) is connected to the auxiliary nozzle (3), and a pressure regulating pump (8) is installed on the auxiliary air pipe (7); one end of the auxiliary air pipe (7) is connected to the main air pipe (5); an installation groove is provided on the top surface of the support base (1), and an air storage and pressure stabilizing device is installed in each of the installation grooves. This utility model not only reduces production costs, but also has the advantages of high working efficiency, energy saving, high working stability, high accuracy, convenient maintenance, low noise, and high structural stability.

Description

Technical Field

[0001] This utility model relates to an auxiliary device for an air-jet loom, and in particular, an air pressure regulating device for an air-jet loom. Background Technology

[0002] Air-jet looms use compressed air to propel weft yarns, and the stability of the air jet pressure directly affects the weft density uniformity of the fabric, manufacturing efficiency, and energy consumption. In current air-jet loom environments, multiple looms typically operate simultaneously, all supplied by a central compressed air system. However, to ensure sufficient supply pressure, the central compressed air system supplies high airflow pressure. This necessitates pressure regulating valves on each loom for pressure adjustment, resulting in significant compressed air consumption and higher overall production costs. Furthermore, to prevent weft yarn breakage caused by momentary pressure fluctuations during pressure regulation, many looms use simple pressure displays to show internal pressure, requiring manual adjustment by turning the regulating valve. This process is complex and slow, negatively impacting the loom's efficiency. Therefore, existing air-jet looms suffer from both high production costs and low efficiency in air pressure regulation. Utility Model Content

[0003] The purpose of this invention is to provide an air pressure regulating device for air-jet looms. This invention not only reduces production costs but also has the advantage of high work efficiency.

[0004] The technical solution of this utility model: A jet pressure regulating device for a jet loom, comprising a support base, on the top surface of which concentrically distributed main nozzles and auxiliary nozzles are mounted; a pressure sensor is installed inside the main nozzle, and a main air pipe is connected to the top surface of the main nozzle away from the end of the auxiliary nozzle; a pressure regulating valve is installed on the main air pipe, and the pressure regulating valve is electrically connected to the pressure sensor; an auxiliary air pipe is connected to the top surface of the auxiliary nozzle near the end of the main nozzle, and a pressure regulating pump is installed on the auxiliary air pipe; one end of the auxiliary air pipe is connected to the main air pipe; an installation groove is provided on the top surface of the support base corresponding to the position between the main nozzle and the auxiliary nozzle, and an air storage and pressure stabilizing device connected to the main nozzle and the auxiliary nozzle is provided in each installation groove; by setting a support base to install the main nozzle and the auxiliary nozzle, the stability of the structure is ensured; the auxiliary nozzle can be used to connect the main nozzle and the jet loom. By performing intermediate acceleration, the pressure of the gas ejected from the main nozzle can be reduced by 10% to 25% compared to a single-nozzle air-jet loom, thereby lowering production costs. Furthermore, the segmented acceleration method reduces the frequency of weft yarn breakage, ensuring work efficiency. By detecting the pressure of the gas ejected from the main nozzle using a pressure sensor and coordinating with a pressure regulating valve, the pressure within the main nozzle can be controlled, minimizing compressed air waste due to high-pressure redundancy. This results in a 15% to 20% reduction in overall energy consumption, improving energy efficiency. The air storage and pressure stabilization device can provide short-term air supply to the main and auxiliary nozzles in case of emergency stops or malfunctions, thus buffering pressure fluctuations caused by the air jet pulse, preventing weft yarn breakage, and ensuring operational stability.

[0005] In the aforementioned jet pressure regulating device for a jet loom, a controller is installed on the side wall of the support base. The pressure sensor, pressure regulating valve, pressure regulating pump, and air storage and stabilizing device are all electrically connected to the controller. The controller controls the start and stop of different electrical components of the entire device, which is convenient to use and can also achieve precise control.

[0006] In the aforementioned air pressure regulating device for an air-jet loom, the pressure sensor is located in the middle of the inner wall of the main nozzle. The pressure sensor is located in the middle of the inner wall of the main nozzle because the inner diameter of the main nozzle gradually decreases from the inlet to the outlet. This location avoids interference from turbulence on the inspection results and ensures the accuracy of the inspection.

[0007] In the aforementioned jet pressure regulating device for a jet loom, the air storage and stabilizing device includes an air storage tank, and a stabilizing pipe connected to the air storage tank and communicating with the main nozzle and the auxiliary nozzle; a solenoid valve is installed on the stabilizing pipe, and the solenoid valve is electrically connected to the controller.

[0008] In the aforementioned jet pressure regulating device for a jet loom, the side of the support base is provided with an inspection port communicating with the mounting groove, and an inspection door is rotatably connected to the inspection port via a hinge; two symmetrically distributed limiting seats are provided on the inner bottom surface of the mounting groove, and each limiting seat has a groove on its top surface that matches the air tank; the support base is provided with an inspection door and an inspection port, which makes it convenient for the user to replace the internal air tank and facilitates maintenance.

[0009] In the aforementioned air pressure regulating device for an air-jet loom, a stainless steel bellows connects the main nozzle and the auxiliary nozzle. The inner diameter of the stainless steel bellows gradually decreases from the main nozzle to the auxiliary nozzle. The inner diameter of the stainless steel bellows near the end of the main nozzle is the same as the inner diameter of the main nozzle outlet, and the inner diameter of the stainless steel bellows near the end of the auxiliary nozzle is the same as the inner diameter of the auxiliary nozzle inlet. The stainless steel bellows can guide the movement of the weft yarn while also making full use of the airflow from the main nozzle to mix with the airflow from the auxiliary nozzle, thereby reducing air consumption and further saving costs.

[0010] Compared with existing technologies, this invention improves the pressure regulating device for nozzles in existing air-jet looms. By installing a support base to mount the main nozzle and auxiliary nozzle, structural stability is ensured. An auxiliary nozzle is located on one side of the main nozzle and connected to the main air pipe on the main nozzle via an auxiliary air pipe. This auxiliary nozzle allows for intermediate acceleration between the main nozzle and the air-jet loom, reducing the required gas pressure by 10%–25% compared to a single-nozzle air-jet loom, thus lowering production costs. Furthermore, the segmented acceleration method reduces the frequency of weft yarn breakage, ensuring work efficiency. A pressure sensor is installed on the main nozzle, working in conjunction with pressure regulating valves on each main air pipe, to achieve pressure sensing... The device detects the pressure of the gas ejected from the main nozzle, and in conjunction with the pressure regulating valve, it controls the pressure within the main nozzle. This minimizes the waste of compressed air due to high-pressure redundancy, reducing the overall energy consumption of the device by approximately 15% to 20%, thus improving energy efficiency. Similarly, the pressure regulating pump can increase the air pressure ejected from the auxiliary nozzle, preventing a decrease in the conveying force of the auxiliary nozzle on the weft yarn and ensuring the stable operation of the air-jet loom. Furthermore, by installing an air storage and pressure stabilizing device on the support base, it can provide short-term air supply to the main and auxiliary nozzles in the event of an emergency stop or malfunction of the air-jet loom. This buffers the pressure fluctuations caused by the jet pulse, preventing weft breakage and ensuring operational stability.

[0011] Furthermore, this invention also features a controller mounted on the side wall of the support base, which controls the start and stop of different electrical components of the entire device, facilitating use while achieving precise control. By placing the pressure sensor in the middle of the inner side wall of the main nozzle, where the inner diameter gradually decreases from the inlet to the outlet, interference from turbulence on the inspection results is avoided, ensuring the accuracy of the test. The support base is equipped with an inspection door and inspection port, allowing users to easily replace the internal gas tank, facilitating maintenance. The installation slot... The upper limit seat on the bottom surface, made of rubber with a certain deformation capacity, ensures the stability of the gas tank position and guarantees structural stability. A stainless steel corrugated pipe is installed between the main nozzle and the auxiliary nozzle. This corrugated pipe guides the movement of the weft yarn and allows for effective mixing of the airflow from the main nozzle and the auxiliary nozzle, thereby reducing air consumption and saving costs. Furthermore, the wavy shape of the inner wall of the stainless steel corrugated pipe reduces the noise generated by the airflow. Therefore, this invention not only reduces production costs but also offers advantages such as high efficiency, energy saving, high operational stability, high accuracy, convenient maintenance, low noise, and high structural stability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is the front view of this utility model.

[0014] The labels in the attached diagram are as follows: 1-Support base, 2-Main nozzle, 3-Auxiliary nozzle, 4-Pressure sensor, 5-Main air pipe, 6-Pressure regulating valve, 7-Auxiliary air pipe, 8-Pressure regulating pump, 9-Controller, 10-Air tank, 11-Pressure stabilizing pipe, 12-Solenoid valve, 13-Inspection door, 14-Limit seat, 15-Stainless steel corrugated pipe. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0016] Example. An air pressure regulating device for an air-jet loom, configured as follows: Figure 1 and 2As shown, the device includes a support base 1, on the top surface of which a main nozzle 2 and an auxiliary nozzle 3 are concentrically distributed. A pressure sensor 4 is installed inside the main nozzle 2, and a main air pipe 5 is connected to the top surface of the main nozzle 2 away from the end of the auxiliary nozzle 3. A pressure regulating valve 6 is installed on the main air pipe 5, and the pressure regulating valve 6 is electrically connected to the pressure sensor 4. An auxiliary air pipe 7 is connected to the top surface of the auxiliary nozzle 3 near the end of the main nozzle 2, and a pressure regulating pump 8 is installed on the auxiliary air pipe 7. One end of the auxiliary air pipe 7 is connected to the main air pipe 5. An installation groove is provided on the top surface of the support base 1 at a position corresponding to the position between the main nozzle 2 and the auxiliary nozzle 3, and each installation groove is provided with an air storage and pressure stabilizing device connected to the main nozzle 2 and the auxiliary nozzle 3.

[0017] A controller 9 is installed on the side wall of the support base 1. A pressure sensor 4, a pressure regulating valve 6, a pressure regulating pump 8, and a gas storage and stabilizing device are all electrically connected to the controller 9. The pressure sensor 4 is located in the middle of the inner side wall of the main nozzle 2. The gas storage and stabilizing device includes a gas storage tank 10, on which a pressure stabilizing pipe 11 is connected, communicating with the main nozzle 2 and the auxiliary nozzle 3. A solenoid valve 12 is installed on the pressure stabilizing pipe 11, and the solenoid valve 12 is electrically connected to the controller 9. An inspection port communicating with the mounting groove is provided on the side of the support base 1, and the inspection port is connected via a hinge. The system is equipped with an inspection door 13; two symmetrically distributed limiting seats 14 are provided on the inner bottom surface of the mounting groove, and each limiting seat 14 has a groove on its top surface that matches the gas storage tank 10; a stainless steel bellows 15 is connected between the main nozzle 2 and the auxiliary nozzle 3, and the inner diameter of the stainless steel bellows 15 gradually decreases along the direction from the main nozzle 2 to the auxiliary nozzle 3; the inner diameter of the stainless steel bellows 15 near the end of the main nozzle 2 is the same as the inner diameter of the outlet of the main nozzle 2, and the inner diameter of the stainless steel bellows 15 near the end of the auxiliary nozzle 3 is the same as the inner diameter of the inlet of the auxiliary nozzle 3.

[0018] Working principle: In actual operation, first connect the entire device to an external safe mains power supply, and connect it between the weft yarn supply device and the air-jet loom. Turn on the controller 9 and the pressure sensor 4 to work normally. (The controller 9 used in this invention can be a programmable controller such as FX2C-20MRD, Cortex-R8, or Cortex-M7; the pressure sensor 4 can be a model such as PX309-200A5V, PXM600MU-350BARGV, or PXM600MU-70BARGV.) Next, the set threshold value for the weft yarn injection pressure is input via the display on the controller 9. An external air compression system then inputs a certain pressure of air into the main air pipe 5. A portion of this airflow enters the main nozzle 2 and exits through its outlet. At this time, the pressure sensor 4 inside the main nozzle 2 detects the internal air pressure and sends the detected value to the controller 9. The controller 9 compares the received value with the internally input set threshold value. When the value is within the set threshold, the external weft yarn supply device can supply the weft yarn. The airflow is supplied to the main nozzle 2 for yarn feeding and weaving. When the value is not within the set threshold, the controller 9 will activate the pressure regulating valve 6 to adjust the airflow pressure entering the main nozzle 2 until the value is within the set threshold. At the same time, part of the airflow from the main air pipe 5 will enter the auxiliary nozzle 3 through the auxiliary air pipe 7. Because the auxiliary air pipe 7 is equipped with a pressure regulating pump 8, the airflow pressure in the auxiliary air pipe 7 can be adjusted by the pressure regulating pump 8 to ensure the stability of the airflow pressure input into the auxiliary nozzle 3. After the main nozzle 2 ejects the weft yarn, the weft yarn will be fed into the main nozzle 2. The yarn enters the auxiliary nozzle 3 through the stainless steel corrugated pipe 15, where it is further accelerated before finally entering the air-jet loom for weaving. Because of the auxiliary nozzle 3, the distance the main nozzle 2 needs to transport the weft yarn is reduced. This reduces the air supply pressure of both the main nozzle 2 and the auxiliary nozzle 3 without affecting the weft yarn transport speed. Compared to the previous single-nozzle method, this reduces air consumption by 10%–25% and also reduces the occurrence of weft yarn breakage, ensuring work efficiency and reducing production costs. In the event of an emergency stop or malfunction of the air-jet loom...

[0019] At this time, controller 9 controls solenoid valve 12 to open, allowing gas tank 10 to supply gas to main nozzle 2.

[0020] A short-term air supply is provided with auxiliary nozzle 3 to buffer the pressure wave following the jet pulse.

[0021] This movement prevents weft breakage and ensures the stability of the operation.

Claims

1. An air pressure regulating device for an air-jet loom, characterized in that: The system includes a support base (1), a main nozzle (2) mounted on the top surface of the support base (1), an auxiliary nozzle (3) provided on one side of the main nozzle (2), the auxiliary nozzle (3) being concentrically arranged with the main nozzle (2); a pressure sensor (4) is installed inside the main nozzle (2), and a main air pipe (5) is connected to the top surface of the main nozzle (2) away from the end of the auxiliary nozzle (3); a pressure regulating valve (6) is installed on the main air pipe (5), and the pressure regulating valve (6) is electrically connected to the pressure sensor (4); an auxiliary air pipe (7) is connected to the top surface of the auxiliary nozzle (3) near the end of the main nozzle (2), and a pressure regulating pump (8) is installed on the auxiliary air pipe (7); one end of the auxiliary air pipe (7) is connected to the main air pipe (5); an installation groove is provided on the top surface of the support base (1) at the position between the main nozzle (2) and the auxiliary nozzle (3), and an air storage and pressure stabilizing device connected to the main nozzle (2) and the auxiliary nozzle (3) is provided in each installation groove.

2. The jet pressure regulating device for a jet loom according to claim 1, characterized in that: A controller (9) is installed on the side wall of the support base (1). The pressure sensor (4), pressure regulating valve (6), pressure regulating pump (8) and gas storage and stabilizing device are all electrically connected to the controller (9).

3. The jet pressure regulating device for a jet loom according to claim 1, characterized in that: The pressure sensor (4) is located in the middle of the inner wall of the main nozzle (2).

4. The jet pressure regulating device for a jet loom according to claim 2, characterized in that: The gas storage and pressure stabilizing device includes a gas storage tank (10), and a pressure stabilizing pipe (11) connected to the gas storage tank (10) and communicating with the main nozzle (2) and the auxiliary nozzle (3); a solenoid valve (12) is installed on the pressure stabilizing pipe (11), and the solenoid valve (12) is electrically connected to the controller (9).

5. The jet pressure regulating device for a jet loom according to claim 4, characterized in that: The support base (1) has an inspection port on its side that communicates with the mounting groove, and an inspection door (13) is connected to the inspection port by a hinge. The inner bottom surface of the mounting groove is provided with two symmetrically distributed limiting seats (14), and the top surface of each limiting seat (14) is provided with a groove that matches the gas storage tank (10).

6. The jet pressure regulating device for a jet loom according to any one of claims 1 to 5, characterized in that: A stainless steel bellows (15) connects the main nozzle (2) and the auxiliary nozzle (3). The inner diameter of the stainless steel bellows (15) gradually decreases along the direction from the main nozzle (2) to the auxiliary nozzle (3). The inner diameter of the stainless steel bellows (15) near the end of the main nozzle (2) is the same as the inner diameter of the outlet of the main nozzle (2), and the inner diameter of the stainless steel bellows (15) near the end of the auxiliary nozzle (3) is the same as the inner diameter of the inlet of the auxiliary nozzle (3).

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