Anti-vibration type elasticizer main network air pressure adjusting device

Abstract

The invention discloses an anti-vibration type elasticizer main network air pressure adjusting device, and relates to the technical field of chemical fiber elasticizing equipment. The device comprises a capacity-increasing air inlet pipeline, a capacity-increasing air outlet pipeline and a manual pressure regulating valve, the air outlet end of the capacity-increasing air inlet pipeline is connected with the inlet end of a variable-diameter buffering mechanism, the air outlet end of the variable-diameter buffering mechanism is connected with an air inlet of the manual pressure regulating valve, and a damping energy dissipation buffering mechanism is fixed in the variable-diameter buffering mechanism; an air outlet of the manual pressure regulating valve is connected with an air inlet end of the buffer surge tank, and an air outlet end of the buffer surge tank is connected with an air inlet end of the capacity-increasing air outlet pipeline. Flow resistance is reduced by increasing the pipe diameter, the manual valve with the locking assembly is adopted to resist vibration drift, the reducing buffer mechanism and the damping energy dissipation buffer mechanism are arranged in front of the valve to suppress pressure pulsation, the buffer surge tank is arranged behind the valve to achieve smooth fluctuation and visual monitoring, and the technical effects of energy conservation, consumption reduction, stable pressure and quality improvement are achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of chemical fiber texturing equipment, and in particular relates to a vibration-resistant texturing machine main network air pressure regulating device. Background Technology

[0002] In the texturing process of chemical fibers, the stability and sufficiency of the main network air pressure are crucial, as they directly affect the network density of the yarn cake and the product quality.

[0003] Existing main network pneumatic systems for loading machines typically suffer from the following two major technical bottlenecks: On the one hand, the excessive pressure drop in the pipelines, especially the last section before entering the machine (such as the DN50 pipeline before and after the pressure regulating valve), creates significant flow resistance to compressed air due to the narrow pipe diameter. This forces the air compressor to be set to a higher output pressure (such as 4.5 kg) to meet the actual operating pressure at the machine end (such as 3.5 kg), resulting in a pressure difference of up to 1 kg and energy waste. At the same time, the limited flow rate also prevents the system from meeting the production needs of "heavy network" products that have higher air pressure requirements.

[0004] On the other hand, pressure regulation is unstable. Existing systems mostly use pneumatic pressure regulating valves, which have the advantage of convenient adjustment. However, in the long-term vibration environment of the texturing machine, the sensitive components such as the diaphragm and spring inside are prone to fatigue or slight displacement, causing the valve set value to drift slowly. This requires operators to frequently inspect and adjust. Such frequent and difficult-to-control fluctuations directly lead to unstable network air pressure, which is a potential source of risk for product quality fluctuations or even batch quality accidents.

[0005] The conventional configuration of "DN50 pipeline and pneumatic pressure regulating valve" described above cannot achieve a good balance between energy consumption and stability. Therefore, we provide a vibration-resistant texturing machine main network air pressure regulating device to solve the aforementioned problems. Summary of the Invention

[0006] The purpose of this invention is to provide a vibration-resistant main network air pressure regulating device for a texturing machine. By increasing the nominal pipe diameter from DN50 to DN80 to reduce flow resistance, using a manual pressure regulating valve with a locking component to resist vibration drift, and setting a diameter-changing buffer mechanism and a damping energy-consuming buffer mechanism before the valve to suppress pressure pulsation, and setting a buffer pressure stabilizing tank after the valve, this invention solves the technical problems of large pipe pressure drop, high energy consumption, pressure drift caused by vibration of the pneumatic pressure regulating valve, and unstable product quality in the existing main network air pressure system of texturing machines.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides a vibration-resistant texturing machine main network air pressure regulating device, including an expansion air inlet pipe, an expansion air outlet pipe, and a manual pressure regulating valve. The air inlet end of the expansion air inlet pipe is connected to the upstream air supply pipe. The nominal diameter of the expansion air inlet pipe is DN80. Compared with the existing DN50 pipe, DN80 can significantly reduce the delivery pressure drop. The air outlet end of the expansion air inlet pipe is connected to the inlet end of the diameter-changing buffer mechanism through a flange. The air outlet end of the diameter-changing buffer mechanism is connected to the air inlet of the manual pressure regulating valve through a flange. A damping energy-dissipating buffer mechanism is fixed inside the diameter-changing buffer mechanism. The air outlet of the manual pressure regulating valve is connected to the air inlet end of the buffer pressure stabilizing tank through a flange. The air outlet end of the buffer pressure stabilizing tank is connected to the air inlet end of the expansion air outlet pipe through a flange. The air outlet end of the expansion air outlet pipe is used to connect to the main network nozzle of the texturing machine. The nominal diameter of the expansion air outlet pipe is DN80. The manual pressure regulating valve includes a valve seat and a valve bracket, with the valve bracket fixed on the valve seat and a locking assembly fixed on the top surface of the valve bracket base plate. The variable diameter buffer mechanism includes an inlet variable diameter section, an expansion buffer cavity, and an outlet variable diameter section arranged sequentially along the airflow direction; The damping energy dissipation buffer mechanism includes staggered upper and lower suspended damping diaphragms, and a porous damping material layer filled between adjacent upper and lower suspended damping diaphragms.

[0008] Furthermore, a valve stem is provided on the valve frame that can move up and down. The valve stem includes a threaded rod part, a handwheel part, and a core part. The handwheel part is fixed to the top of the threaded rod part, and the core part is fixed to the bottom of the threaded rod part.

[0009] Furthermore, the valve frame has connection holes at both the top and bottom, and the threaded part of the valve stem passes through the connection holes on the upper and lower sides of the valve frame and forms a threaded connection with them.

[0010] Furthermore, the locking assembly includes a locking cylinder and a locking wheel, with the locking cylinder fitted with and threadedly connected to the locking wheel.

[0011] Furthermore, the central axis of the locking cylinder coincides with the central axis of the connecting hole, and the circumference of the locking cylinder is provided with evenly distributed slots, so that its upper end forms a ring of radially retractable elastic flaps. The locking cylinder has a tapered inner cavity with an inner diameter that gradually increases from top to bottom.

[0012] Furthermore, the nominal diameter of the inlet reducer section gradually increases from DN80 to DN150~DN200; The nominal diameter of the expanded diameter buffer cavity is DN150~DN200, and the length is not less than 300mm; The nominal diameter of the outlet reducing section gradually decreases from DN150~DN200 to DN80.

[0013] Furthermore, the overall shape of the damping energy dissipation buffer mechanism matches the internal shape of the variable diameter buffer mechanism.

[0014] Furthermore, a set of evenly distributed upper-suspended damping baffles are fixed to the inner upper wall of the expanded diameter buffer cavity, and a set of evenly distributed lower-suspended damping baffles are fixed to the inner lower wall of the expanded diameter buffer cavity.

[0015] Furthermore, the buffer pressure tank includes a cavity, a pressure gauge, and a drain valve. A transparent sight glass is embedded in the side wall of the cavity, a pressure gauge is fixed to the top of the cavity, and a drain valve is fixed to the bottom of the cavity.

[0016] The present invention has the following beneficial effects: 1. This invention increases the nominal pipe diameter from DN50 to DN80. According to the principle of fluid mechanics, the pipe resistance is inversely proportional to the fifth power of the pipe diameter. Under the same flow conditions, the pressure drop is significantly reduced. This improvement allows the upstream air compressor to operate at a lower set pressure. The manual pressure regulating valve only needs to perform the function of precise pressure setting, rather than large pressure reduction. Thus, while ensuring a reasonable working pressure difference between the valve and the valve, the overall energy consumption of the system is significantly reduced.

[0017] 2. This invention uses a manual pressure regulating valve with a locking component to replace the traditional pneumatic pressure regulating valve. The locking component achieves mechanical rigid locking of the valve stem position through the wedge-shaped locking engagement between the locking cylinder and the locking wheel. Even if the texturing machine runs for a long time and generates continuous vibration, the valve setting value will not drift, thus solving the technical problem of pressure fluctuation caused by vibration.

[0018] 3. This invention, by setting up a variable diameter buffer mechanism and a damping energy dissipation buffer mechanism, forms a triple effect of "expansion buffer, mechanical damping and porous dissipation". The inlet variable diameter section causes the airflow to gradually expand and slow down, the expansion buffer cavity provides air volume buffering, the staggered upper and lower suspended damping baffles cause the airflow to turn and impact multiple times, and the porous damping material layer uses the microporous structure to generate frictional dissipation, converting the pressure pulsation energy into heat energy, thereby achieving high-efficiency suppression of broadband pressure pulsation.

[0019] 4. This invention adds a buffer pressure stabilizing tank with a transparent sight glass after the manual pressure regulating valve. Operators can directly observe the water and oil accumulation in the tank, and promptly detect and handle abnormalities. In addition, the pressure gauge on the top facilitates on-site reading of the output pressure, and the drain valve at the bottom can periodically drain condensate to prevent water accumulation from being carried into the nozzle by the airflow and affecting product quality. This invention achieves a multi-functional integration of "post-valve buffer pressure stabilization, visual monitoring and automatic draining".

[0020] 5. The increased pipe diameter of this invention provides a more sufficient airflow, which can meet the production needs of high-requirement "heavy network" products and improve the production adaptability of the equipment. At the same time, the manual valve has a simple structure and low failure rate, which reduces the frequency of inspections and significantly reduces maintenance costs.

[0021] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a vibration-resistant texturing machine's main network air pressure regulating device.

[0024] Figure 2 This is a schematic diagram of a manual pressure regulating valve.

[0025] Figure 3 This is a schematic diagram of the valve stem.

[0026] Figure 4 This is a schematic diagram of the locking assembly mounted on the valve holder.

[0027] Figure 5 A schematic diagram of the structure in which the damping energy dissipation buffer mechanism is installed inside the variable diameter buffer mechanism.

[0028] Figure 6 This is a cross-sectional schematic diagram of the variable diameter buffer mechanism.

[0029] Figure 7 This is a schematic diagram of an explosion of a damping energy dissipation buffer mechanism.

[0030] Figure 8 This is a schematic diagram of the structure of a buffer pressure stabilizing tank.

[0031] The attached diagram lists the components represented by each number as follows: 100A, Increased capacity air inlet pipe; 100B, Increased capacity air outlet pipe; 200, Manual pressure regulating valve; 210, Valve seat; 220, Valve frame; 221, Connecting hole; 230, Valve stem; 231, Threaded rod section; 232, Handwheel section; 233, Core section; 240, Locking assembly; 241, Locking cylinder; 242, Locking wheel; 300, Variable diameter buffer mechanism; 310, Inlet variable diameter section; 320, Expanded diameter buffer cavity; 330, Outlet variable diameter section; 400, Damping energy dissipation buffer mechanism; 410, Upper suspended damping baffle; 420, Lower suspended damping baffle; 430, Porous damping material layer; 500, Buffer pressure stabilizing tank; 510, Cavity; 511, Transparent sight glass; 520, Pressure gauge; 530, Drain valve. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, please refer to Figure 1 In this embodiment of the invention, a vibration-resistant texturing machine main network air pressure regulating device includes an expansion air inlet pipe 100A, an expansion air outlet pipe 100B, and a manual pressure regulating valve 200. The air inlet end of the expansion air inlet pipe 100A is connected to the upstream air supply pipe, and its nominal diameter is DN80. The air outlet end of the expansion air inlet pipe 100A is connected to the inlet end of the variable diameter buffer mechanism 300 through a flange for easy disassembly and maintenance. The air outlet end of the variable diameter buffer mechanism 300 is connected to the air inlet of the manual pressure regulating valve 200 through a flange. The air outlet of the manual pressure regulating valve 200 is connected to the air inlet end of the buffer pressure stabilizing tank 500 through a flange. The air outlet end of the buffer pressure stabilizing tank 500 is connected to the air inlet end of the expansion air outlet pipe 100B through a flange. The air outlet end of the expansion air outlet pipe 100B is used to connect to the main network nozzle of the texturing machine, and the nominal diameter of the expansion air outlet pipe 100B is DN80.

[0034] The working principle of this embodiment is as follows: Compressed air enters the DN80 nominal diameter intake pipe 100A from the upstream air supply pipe. Since the pipe diameter is significantly larger than the original DN50 pipe, according to the principle of fluid mechanics, the pipe resistance is inversely proportional to the fifth power of the pipe diameter. Increasing the pipe diameter from DN50 to DN80 can significantly reduce the transmission pressure drop under the same flow conditions. The theoretical calculation shows that the reduction can reach more than 90%. At the same time, DN80 is a commonly used specification in industrial pipelines, which is convenient for on-site modification. After the airflow is buffered by the diameter-changing buffer mechanism 300, it enters the manual pressure regulating valve 200. The output pressure is set by manual adjustment. Due to the use of a manual valve structure, it is not sensitive to the vibration of the texturing machine and the set value is not easy to drift. The stable airflow after adjustment enters the buffer pressure stabilizing tank 500 for further smoothing, and then is delivered to the main network nozzle through the DN80B expansion outlet pipe, providing stable and sufficient air pressure for the texturing process.

[0035] Example 2, based on Example 1, further refines the locking component 240 of the manual pressure regulating valve 200, upgrading it from an ordinary manual valve to a vibration-resistant manual valve specifically for a texturing machine.

[0036] Please see Figure 2 and Figure 4 In this embodiment, the manual pressure regulating valve 200 includes a valve seat 210 and a valve frame 220. The valve frame 220 is fixed on the valve seat 210, and a locking assembly 240 is fixed on the top surface of the bottom plate of the valve frame 220.

[0037] like Figure 2 and Figure 3 As shown, in this embodiment, a valve stem 230 is movably mounted on the valve frame 220. The valve stem 230 includes a threaded rod portion 231, a handwheel portion 232, and a core portion 233. The handwheel portion 232 is fixed to the top end of the threaded rod portion 231, and the core portion 233 is fixed to the bottom end of the threaded rod portion 231.

[0038] like Figure 2 and Figure 4 As shown, in this embodiment, the valve frame 220 has connection holes 221 at both the top and bottom. The threaded rod portion 231 of the valve stem 230 passes through the connection holes 221 on the upper and lower sides of the valve frame 220 and forms a threaded connection with them.

[0039] like Figure 4As shown, in this embodiment, the locking assembly 240 includes a locking cylinder 241 and a locking wheel 242. The locking cylinder 241 is fitted with and threadedly connected to the locking wheel 242. The central axis of the locking cylinder 241 coincides with the central axis of the connecting hole 221. The circumference of the locking cylinder 241 is provided with evenly distributed slots, so that the upper end forms a ring of radially retractable elastic flaps. The locking cylinder 241 has a tapered inner cavity with an inner diameter that gradually increases from top to bottom. When the locking wheel 242 is rotated to the upper part of the locking cylinder 241, the upper part of the locking cylinder 241 is compressed and tightly fits with the threaded rod part 231 of the valve stem 230 to form a friction lock.

[0040] The working principle of this embodiment is as follows: the operator rotates the valve stem 230 through the handwheel 232, which drives the core 233 to move up and down. After adjusting to the pressure value required by the process, the locking wheel 242 is tightened. When the locking wheel 242 moves upward along the locking cylinder 241, the elastic flap at the upper end of the locking cylinder 241 contracts radially, and its conical inner cavity forms a wedge-shaped locking fit with the threaded rod 231. Since this locking is a mechanical rigid locking, even if the texturing machine runs for a long time and generates continuous vibration, the position of the valve stem 230 will not drift, which completely solves the technical problem of the existing pneumatic pressure regulating valve causing the set value to change due to vibration.

[0041] Example 3, based on Example 1 or Example 2, further refines the specific structure of the variable diameter buffer mechanism 300 and the damping energy dissipation buffer mechanism 400.

[0042] Please see Figure 6 In this embodiment, the variable diameter buffer mechanism 300 includes an inlet variable diameter section 310, an expansion buffer cavity 320, and an outlet variable diameter section 330 arranged sequentially along the airflow direction. The nominal diameter of the inlet variable diameter section 310 gradually expands from DN80 to DN150~DN200; the nominal diameter of the expansion buffer cavity 320 is DN150~DN200, and its length is not less than 300mm; the nominal diameter of the outlet variable diameter section 330 gradually shrinks from DN150~DN200 to DN80. The selection of the above parameters is based on the following: The function of the expanded diameter buffer cavity 320 is to act as a gas container to smooth pressure fluctuations. According to the gas container principle in fluid mechanics, the larger the volume of the gas container, the better the buffering effect on pressure pulsation. Under the typical working conditions of the main network pneumatic system of the loading machine, the pressure pulsation frequency is about 0.5~2Hz. To achieve effective buffering, the gas container volume needs to reach a certain level. According to theoretical estimation, when the nominal diameter of the expanded diameter buffer cavity 320 is DN150~DN200 and the length is not less than 300mm, its volume can reach 5~10 liters, which is sufficient to effectively attenuate the pressure pulsation in the above frequency range. At the same time, DN150 and DN200 are commonly used specifications in industrial pipelines, which are convenient for procurement and on-site installation. Those skilled in the art can select specific dimensions within the above range according to actual working conditions, or design other buffer structures with equivalent volumes based on the same principle.

[0043] like Figure 5 and Figure 7 As shown, in this embodiment, the overall shape of the damping energy dissipation buffer mechanism 400 matches the internal shape of the variable diameter buffer mechanism 300. The damping energy dissipation buffer mechanism 400 includes staggered upper suspended damping baffles 410 and lower suspended damping baffles 420, and a porous damping material layer 430 filled between adjacent upper suspended damping baffles 410 and lower suspended damping baffles 420. A set of evenly distributed upper suspended damping baffles 410 are all fixed to the inner upper wall of the expanded diameter buffer cavity 320, and a set of evenly distributed lower suspended damping baffles 420 are all fixed to the inner upper wall of the cavity 320. The inner lower wall of the expanded diameter buffer cavity 320 has a porous damping material layer 430 made of foamed metal or sintered metal fiber. Such materials have a three-dimensional interconnected pore structure and have good frictional dissipation effect on airflow. Preferably, its porosity can be controlled between 60% and 80%, and its thickness is 20 to 50 mm. Multiple layers can be set as needed. This parameter range can make it achieve a good damping effect in the 0.5 to 5 kHz frequency band. Those skilled in the art can adjust it within the above range according to the actual working conditions, or select commercially available conventional porous material products.

[0044] The working principle of this embodiment is as follows: After the airflow enters the inlet variable diameter section 310, the flow velocity decreases due to the gradual expansion of the pipe diameter, and the pressure pulsation amplitude decreases. After entering the expansion buffer cavity 320, the airflow passes through the staggered upper suspended damping baffle 410 and lower suspended damping baffle 420 in sequence, and multiple turns and impacts occur at the baffles, further attenuating the pressure pulsation. At the same time, the porous damping material layer 430 filled between the baffles uses its microporous structure to generate frictional dissipation of the airflow, converting the energy of the pressure pulsation into heat energy, thereby effectively suppressing high-frequency pulsation. After the composite buffer and vibration reduction, the airflow gradually shrinks through the outlet variable diameter section 330 to restore the flow velocity and enters the manual pressure regulating valve 200. This embodiment achieves wideband, high-efficiency suppression of pressure pulsations through the triple action of "expansion buffering, mechanical damping, and porous dissipation".

[0045] Example 4: Based on Examples 1, 2 and 3, this example further refines the specific structure of the buffer pressure stabilizing tank 500.

[0046] Please see Figure 8 In this embodiment, a safety valve is fixed to the periphery of the buffer pressure stabilizing tank 500 as a safety protection measure. The set pressure of the safety valve is set to 1.05 to 1.1 times the maximum working pressure of the manual pressure regulating valve 200, and should not exceed the design pressure of the buffer pressure stabilizing tank 500. For example, when the process pressure is 0.35 MPa, the set pressure of the safety valve can be set to 0.38 to 0.4 MPa. When the pressure inside the tank exceeds the safety threshold due to valve failure or misoperation, the safety valve automatically opens to release pressure, protecting the buffer pressure stabilizing tank 500 and downstream equipment from overpressure damage. The buffer pressure stabilizing tank 500 includes a cavity 510, a pressure gauge 520, and a drain valve 530. A transparent sight glass 511 is embedded in the side wall of the cavity 510. A pressure gauge 520 is fixed to the top of the cavity 510 for real-time display of the output pressure value. A drain valve 530 is fixed to the bottom of the cavity 510 for draining the condensate accumulated at the bottom of the cavity. The cavity 510 is made of metal, preferably 304 stainless steel or carbon steel, with a wall thickness of not less than 3mm to meet the safety specifications for pressure vessels. The transparent sight glass 511 is made of tempered glass or polycarbonate (PC) and is used to observe the water and oil accumulation in the cavity.

[0047] The working principle of this embodiment is as follows: Compressed air regulated by manual pressure regulating valve 200 enters buffer pressure stabilizing tank 500. The cavity 510 serves as an air container to further smooth out any possible minor pressure fluctuations. Since the compressed air contains moisture, after the airflow speed decreases in the cavity, the condensate naturally settles at the bottom of the cavity and can be periodically discharged through the drain valve 530 at the bottom to prevent water accumulation from being carried into the downstream nozzle by the airflow and affecting product quality. The pressure gauge 520 set at the top facilitates on-site reading of the output pressure and cross-verifies it with the set value of manual pressure regulating valve 200. To ensure that the sewage discharge operation does not affect the continuity of production, it is recommended to discharge sewage during the production line downtime. If it is necessary to discharge sewage during operation, the sewage discharge valve 530 should be opened slowly, and the pressure gauge 520 should be closely observed to ensure that the output pressure fluctuation does not exceed the process allowable range (e.g., ±0.05MPa).

[0048] This embodiment achieves multi-functional integration of "post-valve buffering and pressure stabilization, visual monitoring, and controllable sewage discharge", further improving the stability and maintainability of the system.

[0049] Example 5, based on Examples 1 to 4, provides an installation and debugging method for the main network air pressure regulating device of the vibration-resistant texturing machine.

[0050] The installation method in this embodiment includes the following steps: The first step is system evaluation and design: measure the layout and length of the existing DN50 pipeline, design the laying path of the DN80 pipeline, select the manual pressure regulating valve model 200 that is compatible with the DN80 pipeline interface, and ensure that the valve body diameter is also DN80. The second step is segmented construction: After shutdown, remove the original DN50 pipe and pneumatic pressure regulating valve, and install a new capacity-enhancing air inlet pipe 100A, a diameter-changing buffer mechanism 300, a manual pressure regulating valve 200, a buffer pressure stabilizing tank 500, and a capacity-enhancing air outlet pipe 100B; all flange connections are sealed with metal spiral wound gaskets to ensure airtightness.

[0051] The debugging and running method of this embodiment is as follows: The third step is preliminary adjustment: After connecting the air source, loosen the locking wheel 242 (rotate it downwards), and slowly rotate the valve stem 230 through the handwheel 232 to adjust the manual pressure regulating valve 200 to the pressure value required by the process. Since there is an expanded diameter buffer chamber 320 in front of the valve, there is a brief lag in the pressure response. After each adjustment of the handwheel 232, wait 15 to 30 seconds (the specific time depends on the volume of the buffer pressure stabilizing tank 500) to observe the reading of the pressure gauge 520. After the reading stabilizes, make the next fine adjustment. Use the method of "small amplitude and intermittent waiting" to gradually approach the target pressure to avoid over-adjustment due to response lag. Step 4, Precision calibration: After the pressure gauge 520 reading stabilizes within the target pressure ±0.02MPa range, keep the handwheel 232 position unchanged and observe the pressure gauge 520 reading for 2 minutes without drifting to confirm that the adjustment is in place; Fifth step, pressure locking: Tighten the locking wheel 242. When the locking wheel 242 moves upward along the locking cylinder 241, the elastic flap at the upper end of the locking cylinder 241 contracts radially and grips the threaded rod 231 of the valve stem 230, thereby achieving mechanical rigid locking of the valve stem position. After locking, the valve setting value no longer changes, and the device operates in a preset steady state mode. Step 6, Pressure Monitoring: During the production process, operators do not need to frequently adjust the manual pressure regulating valve 200. They only need to periodically observe the pressure gauge 520 on the top of the buffer pressure stabilizing tank 500 to confirm that the output pressure is stable within the process requirements. If an abnormal pressure is found, the upstream gas supply pressure and pipeline sealing should be checked first, rather than directly adjusting the valve. Step 7, Online Drainage: The moisture in the compressed air settles naturally in the buffer pressure tank 500. The operator observes the water level through the cavity 510. When the water reaches 1 / 3 of the tank height, the drain valve 530 is slowly opened to drain the water. Since the buffer pressure tank 500 has sufficient air capacity, the downstream pressure fluctuation is small (usually not exceeding ±0.01MPa) and does not affect normal production. After the water is drained, the drain valve 530 is closed immediately. Each drainage time should not exceed 10 seconds, and drainage should be carried out 1-2 times a day. The specific frequency is determined on-site based on the moisture content of the compressed air. Step 8, Air compressor parameter optimization: After all the machines have been modified, gradually reduce the output set pressure of the air compressor in increments of 0.05~0.1MPa. After each reduction, observe the pressure before the manual pressure regulating valve 200 on the remote machine to ensure that the pressure before the valve is always 0.03~0.05MPa higher than the downstream process pressure to maintain the normal regulating function of the valve until energy-saving operation is achieved while meeting the pressure requirements of all machines.

[0052] The working principle of this embodiment is as follows: This device adopts the operation logic of "separation of regulation and operation". Pressure regulation is completed only once during the commissioning stage and rigidly locked by the locking component 240. No regulation operation is performed during the production operation stage, which fundamentally avoids pressure drift caused by vibration of the texturing machine or frequent operation. The buffer pressure stabilizing tank 500 has sufficient air capacity, allowing online sewage discharge without affecting the downstream pressure, ensuring the stability of continuous production. By expanding the pipe diameter and matching the valve diameter, the conveying resistance is reduced. With the optimization of the air compressor output pressure, the overall energy consumption of the system is significantly reduced.

[0053] Example 6, this example provides the following alternative solution: Option 1, regarding pipe material: As an alternative, the material for the increased capacity intake pipe 100A and the increased capacity exhaust pipe 100B is not limited to galvanized steel pipe; stainless steel pipe (such as 304 or 316L stainless steel) or pressure-resistant plastic pipe (such as polyamide PA pipe or polyurethane PU pipe, with a nominal pressure of not less than 1.0 MPa) can also be used. Those skilled in the art can select appropriate pipe materials based on the site environment, cost, and corrosion resistance requirements.

[0054] Option 2, regarding the precision filter: As an alternative, a precision filter can be installed in series between the variable diameter buffer mechanism 300 and the manual pressure regulating valve 200. This precision filter can be a sintered filter or a pleated cartridge filter with a filtration accuracy of 5~10μm. Its housing is made of aluminum alloy or stainless steel, and the interface is compatible with DN80 pipes. The precision filter is installed by threaded connection or flange connection, which is convenient for disassembly, cleaning, or replacement of the filter element. This filter is used to filter oil mist, dust, and moisture in compressed air, protect the valve core and seals of the manual pressure regulating valve 200, and extend the valve's service life.

[0055] Option 3, regarding remote monitoring: As an alternative, a pressure sensor can be added to the top or side of the buffer pressure tank 500. This pressure sensor can be a piezoresistive or ceramic capacitive pressure transmitter with a range of 0~1.0MPa and an output signal of 4~20mA standard current signal or RS485 digital signal. The pressure sensor is connected to the PLC or DCS system in the central control room via a signal cable or wireless transmission module to realize remote pressure monitoring and alarm functions. When the pressure exceeds the set range, the central control room can issue an audible and visual alarm to prompt the operator to handle it in time. It should be noted that this remote monitoring solution is only an auxiliary monitoring means, and the core pressure stabilization function is still independently completed by the manual pressure regulating valve 200.

[0056] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A vibration-resistant texturing machine main network air pressure regulating device, comprising an increased capacity air inlet pipe (100A), an increased capacity air outlet pipe (100B), and a manual pressure regulating valve (200), characterized in that, The inlet end of the expansion air intake pipe (100A) is connected to the upstream air supply pipe. The nominal diameter of the expansion air intake pipe (100A) is DN80. The outlet end of the expansion air intake pipe (100A) is connected to the inlet end of the variable diameter buffer mechanism (300) through a flange. The outlet end of the variable diameter buffer mechanism (300) is connected to the inlet of the manual pressure regulating valve (200) through a flange. A damping energy dissipation buffer mechanism (400) is fixed inside the variable diameter buffer mechanism (300). The outlet of the manual pressure regulating valve (200) is connected to the inlet end of the buffer pressure stabilizing tank (500) through a flange. The outlet end of the buffer pressure stabilizing tank (500) is connected to the inlet end of the expansion air outlet pipe (100B) through a flange. The outlet end of the expansion air outlet pipe (100B) is used to connect to the main network nozzle of the bombardier. The nominal diameter of the expansion air outlet pipe (100B) is DN80. The manual pressure regulating valve (200) includes a valve seat (210) and a valve frame (220). The valve frame (220) is fixed on the valve seat (210), and a locking assembly (240) is fixed on the top surface of the bottom plate of the valve frame (220). The variable diameter buffer mechanism (300) includes an inlet variable diameter section (310), an expansion buffer cavity (320), and an outlet variable diameter section (330) arranged sequentially along the airflow direction. The damping energy dissipation buffer mechanism (400) includes staggered upper-suspended damping baffles (410) and lower-suspended damping baffles (420), and a porous damping material layer (430) filled between adjacent upper-suspended damping baffles (410) and lower-suspended damping baffles (420).

2. The anti-vibration texturing machine main network air pressure regulating device according to claim 1, characterized in that, The valve frame (220) is provided with a valve stem (230) that can move up and down. The valve stem (230) includes a threaded rod part (231), a handwheel part (232) and a core part (233). The handwheel part (232) is fixed at the top of the threaded rod part (231), and the core part (233) is fixed at the bottom of the threaded rod part (231).

3. The anti-vibration texturing machine main network air pressure regulating device according to claim 2, characterized in that, The valve frame (220) has connection holes (221) at both the top and bottom. The threaded rod part (231) of the valve stem (230) passes through the connection holes (221) on the upper and lower sides of the valve frame (220) and forms a threaded connection with them.

4. The anti-vibration texturing machine main network air pressure regulating device according to claim 3, characterized in that, The locking assembly (240) includes a locking cylinder (241) and a locking wheel (242), with the locking cylinder (241) sleeved and threadedly connected to the locking wheel (242).

5. The anti-vibration texturing machine main network air pressure regulating device according to claim 4, characterized in that, The central axis of the locking cylinder (241) coincides with the central axis of the connecting hole (221). The locking cylinder (241) has evenly distributed slots on its periphery, so that its upper end forms a ring of radially retractable elastic flaps. The locking cylinder (241) has a tapered inner cavity with an inner diameter that gradually increases from top to bottom.

6. The anti-vibration texturing machine main network air pressure regulating device according to claim 1, characterized in that, The nominal diameter of the inlet variable diameter section (310) gradually increases from DN80 to DN150~DN200; The nominal diameter of the expanded diameter buffer cavity (320) is DN150~DN200, and the length is not less than 300mm; The nominal diameter of the outlet variable diameter section (330) gradually decreases from DN150~DN200 to DN80.

7. The anti-vibration texturing machine main network air pressure regulating device according to claim 1, characterized in that, The overall shape of the damping energy dissipation buffer mechanism (400) matches the internal shape of the variable diameter buffer mechanism (300).

8. The anti-vibration texturing machine main network air pressure regulating device according to claim 7, characterized in that, A set of evenly distributed upper-suspended damping baffles (410) are fixed to the inner upper wall of the expanded diameter buffer cavity (320), and a set of evenly distributed lower-suspended damping baffles (420) are fixed to the inner lower wall of the expanded diameter buffer cavity (320).

9. The anti-vibration texturing machine main network air pressure regulating device according to claim 1, characterized in that, The buffer pressure stabilizing tank (500) includes a cavity (510), a pressure gauge (520) and a drain valve (530). A transparent sight glass (511) is embedded in the side wall of the cavity (510), the pressure gauge (520) is fixed on the top of the cavity (510), and the drain valve (530) is fixed on the bottom of the cavity (510).

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