A pressure regulating device for a machine tool filtration system

Abstract

This utility model discloses a pressure regulating device for a machine tool filtration system, relating to the field of mechanical engineering technology. It includes an inlet pipe and a buffer pipe disposed inside the inlet pipe. In this utility model, when the pressure of the machine tool filtration system fluctuates, the fluid flows into the buffer pipe through the inlet pipe, first dispersing the pressure through the spiral channel of the spiral blades, and then impacting the airbags at both ends. The tension springs inside the airbags deform and absorb energy, while the vent pipe balances the air pressure. After the pressure is transmitted to the mounting components, the elastic element, buffer spring, and damper work together, forming a three-dimensional buffer network in a cross-shaped arrangement, achieving all-round absorption of lateral and longitudinal impacts. Finally, the buffered fluid smoothly enters the filtration system through valves and pipes. In this device, the combination of spiral blades and airbags improves buffering efficiency, the X-shaped elastic component, combined with the cross-shaped buffer structure, overcomes the limitations of unidirectional buffering, and the tension spring and vent pipe achieve dynamic response to high and low frequency pressure fluctuations.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to a pressure regulating device for a machine tool filtration system. Background Technology

[0002] A pressure regulating device for a machine tool filtration system is a key piece of equipment used to ensure the stable operation of fluid filtration systems such as cutting fluid and lubricating oil during machine tool processing. It monitors system pressure in real time through a pressure sensor. When pressure fluctuations are caused by filter blockage or pump start-stop, it absorbs pressure shocks using buffer components such as an elastic diaphragm buffer chamber and damping orifices. Combined with regulating components such as a piston-type pressure regulating valve and an electric regulating valve, it automatically adjusts fluid flow and pressure, preventing pipeline damage due to excessive pressure and accelerated wear of seals. Simultaneously, it integrates a PLC controller and a human-machine interface to achieve intelligent pressure control and abnormal alarms, ensuring the machine tool filtration system maintains stable and efficient operation under complex working conditions.

[0003] During machine tool processing, the filtration efficiency and stability of the filtration system for fluids such as cutting fluid and lubricating oil directly affect machining accuracy and equipment lifespan. When the filter element becomes clogged or the pump starts and stops, the system experiences severe pressure fluctuations. Existing pressure regulating devices often employ a single buffer structure, such as a simple spring buffer or a throttling orifice buffer, which is insufficient to effectively absorb high-frequency pressure shocks. This leads to pipelines experiencing instantaneous high pressure, causing leaks, accelerated wear of seals, and even overload damage to the filter pump. Furthermore, the slow response speed of a single buffer structure makes it unable to adapt to rapid pressure changes under complex operating conditions, thus limiting the reliability and service life of the machine tool filtration system. Utility Model Content

[0004] The purpose of this invention is to provide a pressure regulating device for a machine tool filtration system to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a pressure regulating device for a machine tool filtration system, including an inlet pipe, a buffer pipe disposed inside the inlet pipe, annular air bladders at both ends of the buffer pipe, a vent pipe between the two air bladders, and the vent pipe disposed on the buffer pipe; a mounting component, fixedly mounted on one side of the air bladder, an annular ring disposed on one side of the mounting component, and an elastic element, a buffer spring, and a damper disposed between the mounting component and the annular ring, the elastic elements being alternately arranged to form an X-shaped elastic assembly, and the buffer spring being sleeved on the outside of the damper.

[0006] Furthermore, the buffer assembly is arranged in a cross shape, and the buffer spring and damper are also arranged in a cross shape.

[0007] Furthermore, the airbag is provided with annularly distributed tension springs inside.

[0008] Furthermore, the buffer tube is provided with helical blades inside, which make the buffer tube form a helical channel.

[0009] Furthermore, a valve is provided at one end of the inlet pipe, and a pipe is provided at the end of the valve away from the inlet pipe.

[0010] Furthermore, the elastic element is made of spring steel.

[0011] Furthermore, a bellows is fitted around the buffer spring and damper.

[0012] Furthermore, the spiral blades are made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this invention, when the pressure of the machine tool filtration system fluctuates, the fluid flows into the buffer pipe through the inlet pipe, first dispersing the pressure through the spiral channel of the spiral blades, and then impacting the airbags at both ends. The tension springs inside the airbags deform and absorb energy, while the vent pipe balances the air pressure. After the pressure is transmitted to the mounting components, the elastic element, buffer spring, and damper work together, forming a three-dimensional buffer network in a cross-shaped arrangement, achieving all-round absorption of lateral and longitudinal impacts. Finally, the buffered fluid smoothly enters the filtration system through valves and pipes. In this device, the combination of spiral blades and airbags improves buffering efficiency, the X-shaped elastic component, in conjunction with the cross-shaped buffer structure, overcomes the limitations of unidirectional buffering, and the tension springs and vent pipe achieve dynamic response to high and low frequency pressure fluctuations.

[0015] 2. In this utility model, the spiral blades make the buffer tube form a spiral channel, which on the one hand prolongs the flow path of the fluid in the buffer tube, increases the contact time and friction between the fluid and the tube wall, effectively consumes the kinetic energy of the fluid, slows down the flow rate, and reduces the pressure fluctuation of the fluid. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the buffer tube of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure between the airbag and the mounting component in this utility model;

[0019] Figure 4 This is a schematic diagram of the elastic element structure in this utility model;

[0020] In the diagram: 1. Inlet pipe; 2. Valve; 3. Buffer pipe; 4. Airbag; 5. Mounting component; 6. Annular ring; 7. Elastic component; 8. Buffer spring; 9. Damper; 10. Vent pipe; 11. Spiral blade; 12. Pipeline. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution:

[0023] See Figures 1-4 As shown, a pressure regulating device for a machine tool filtration system includes an inlet pipe 1, a buffer pipe 3 disposed inside the inlet pipe 1, annular air bladders 4 at both ends of the buffer pipe 3, a vent pipe 10 disposed between the two air bladders 4, and the vent pipe 10 disposed on the buffer pipe 3; a mounting component 5, fixedly mounted on one side of the air bladders 4, an annular ring 6 disposed on one side of the mounting component 5, and an elastic component 7, a buffer spring 8, and a damper 9 disposed between the mounting component 5 and the annular ring 6. The elastic components 7 are arranged alternately to form an X-shaped elastic assembly, and the buffer spring 8 is sleeved on the outside of the damper 9.

[0024] When the machine tool filtration system experiences pressure fluctuations due to filter element blockage or pump start-stop, the fluid flows into the buffer pipe 3 through the inlet pipe 1. It first impacts the spiral channel formed by the spiral blades 11, dispersing pressure energy by extending the fluid path and changing the flow direction. Subsequently, the high-pressure fluid acts on the air bladders 4 at both ends of the buffer pipe 3. The tension springs inside the air bladders 4 deform under pressure to absorb part of the impact, while the air pressure between the two air bladders 4 is balanced through the vent pipe 10, enhancing buffer consistency.

[0025] The pressure is further transmitted to mounting component 5, triggering the coordinated operation of the X-shaped elastic assembly composed of elastic element 7, buffer spring 8, and damper 9: elastic element 7 provides lateral buffering force through staggered deformation, buffer spring 8 absorbs longitudinal impact energy, and damper 9 suppresses vibrations caused by spring rebound. The three components are distributed in a cross shape, forming a comprehensive buffer network to ensure that high-pressure fluctuations are attenuated in multiple stages. Finally, the buffered fluid smoothly enters the filtration system through valve 2 and pipe 12.

[0026] The combination of the spiral blade 11 and the airbag 4 achieves fluid path buffering and air pressure elastic buffering, which improves the efficiency compared with the traditional single spring buffering.

[0027] The X-shaped elastic component, together with the cross-shaped distributed buffer springs 8 and dampers 9, forms a three-dimensional buffer network that can absorb lateral and longitudinal impacts simultaneously, overcoming the limitation of traditional structures that can only buffer in one direction.

[0028] The tension spring and ventilator 10 inside the airbag 4 allow the cushioning effect to be dynamically adjusted according to pressure changes. High-frequency small-amplitude fluctuations are quickly responded to by the elastic element 7, while low-frequency large-amplitude fluctuations are handled by the buffer spring 8 and damper 9 working together.

[0029] See Figure 1 The buffer assembly is arranged in a cross shape, and the buffer spring 8 and the damper 9 are also arranged in a cross shape.

[0030] The buffer assembly is arranged in a cross shape, and the buffer spring 8 and damper 9 are also cross-shaped. This allows for the buffering and suppression of pressure fluctuations from multiple directions, forming a symmetrical buffer force distribution in the horizontal and vertical directions. This effectively copes with pressure impacts from different angles. Compared with asymmetrical or single-direction buffer structures, it can more comprehensively absorb and disperse pressure energy, reduce excessive local stress, and ensure uniform and stable pressure in the inlet pipe 1. At the same time, the cross-shaped structure can also enhance the overall structural stability of the buffer assembly, making the elastic element 7, buffer spring 8, and damper 9 work together with more balanced force. This avoids premature damage to components due to uneven force, extends the service life of the buffer assembly, and ensures the long-term stable operation of the pressure regulating device of the machine tool filtration system.

[0031] See Figure 2-3 The airbag 4 has a ring-shaped distribution of tension springs inside.

[0032] The airbag 4 is equipped with annularly distributed tension springs. When the airbag 4 is subjected to fluid pressure impact, the elastic deformation of the tension springs absorbs the pressure energy, enhancing the buffering capacity of the airbag 4. This ensures that the airbag 4 is evenly stressed when it expands under pressure, avoiding damage caused by excessive local expansion. At the same time, the annularly distributed tension springs support and constrain the deformation of the airbag 4, allowing the airbag 4 to maintain a stable buffering effect when pressure fluctuates. This improves the adaptability to pressure impacts of different amplitudes, ensuring that the airbags 4 at both ends of the buffer tube 3 are more reliable in absorbing pressure fluctuations, thereby ensuring the stable buffering performance of the entire machine tool filtration system pressure regulating device.

[0033] See Figure 1-2 The buffer tube 3 is equipped with a spiral blade 11 inside, which makes the buffer tube 3 form a spiral channel.

[0034] The buffer tube 3 is equipped with spiral blades 11, which make the buffer tube 3 form a spiral channel. On the one hand, it prolongs the flow path of the fluid in the buffer tube 3, increases the contact time and friction between the fluid and the tube wall, effectively consumes the kinetic energy of the fluid, slows down the flow rate, and reduces the pressure fluctuation of the fluid. On the other hand, the spiral channel guides the fluid to generate spiral motion, making the pressure distribution of the fluid more uniform, avoiding excessive local pressure, and dispersing concentrated pressure impacts into small-amplitude pressure changes in multiple directions. This facilitates better absorption and regulation of pressure by subsequent buffer components such as airbags 4, elastic elements 7, buffer springs 8, and dampers 9. At the same time, the spiral motion can also play a certain role in centrifugal separation of impurities in the fluid, reducing the risk of impurities clogging the subsequent filtration system, and improving the stability and filtration efficiency of the pressure regulation device of the entire machine tool filtration system.

[0035] See Figure 1 A valve 2 is installed at one end of the inlet pipe 1, and a pipe 12 is installed at the end of the valve 2 away from the inlet pipe 1.

[0036] A valve 2 is installed at one end of the inlet pipe 1, and a pipe 12 is installed at the end of the valve 2 away from the inlet pipe 1. The valve 2 can flexibly control the flow of fluid according to the actual working conditions. When the machine tool filtration system is started, stopped or maintained, the fluid passage between the inlet pipe 1 and the pipe 12 can be cut off to prevent fluid leakage. This facilitates the inspection and replacement of components such as the buffer pipe 3 and the air bag 4 inside the pressure regulating device. At the same time, the valve 2 can also be used to regulate the fluid flow rate. Together with the buffer component, it can achieve more precise control of the system pressure. The pipe 12 provides a stable delivery channel for the fluid after buffering and pressure regulation, ensuring that the fluid can smoothly enter the subsequent filtration system and maintain the continuity and stability of the entire machine tool filtration system.

[0037] See Figure 4 The elastic element 7 is made of spring steel.

[0038] The elastic component 7 is made of spring steel, which has high strength, high elastic limit, and good fatigue resistance. Under the condition of frequent pressure fluctuations in the machine tool filtration system, it can withstand repeated tensile and compressive deformation without easily undergoing permanent deformation or fracture. This ensures that the X-shaped elastic component formed by the elastic component 7 can continuously and stably play a buffering role, effectively absorbing and dispersing pressure shocks. At the same time, spring steel has good hardenability and heat treatment performance. Its mechanical properties can be further optimized through appropriate heat treatment processes to achieve the best match between hardness and toughness, adapting to complex working environments. Furthermore, the corrosion resistance of spring steel can resist the erosion of fluids such as cutting fluid and lubricating oil, extending the service life of the elastic component 7, reducing maintenance costs, and ensuring the long-term reliable operation of the pressure regulating device of the machine tool filtration system.

[0039] See Figure 1-2The buffer spring 8 and the damper 9 are fitted with bellows.

[0040] The buffer spring 8 and damper 9 are externally fitted with a bellows, which can effectively protect the buffer spring 8 and damper 9 from corrosion by fluids such as cutting fluid and lubricating oil, and prevent impurities from adhering to the surface of the buffer spring 8 and damper 9 and affecting their normal expansion and contraction and damping performance. At the same time, the bellows has good flexibility and elasticity, and will not cause additional obstruction to the movement of the buffer spring 8 when it is compressed or stretched, or the damper 9 when it is working. This ensures that the buffer spring 8 and damper 9 can respond flexibly to pressure changes and stably perform the buffering and vibration reduction function. In addition, the bellows can also reduce the damage to the buffer spring 8 and damper 9 caused by external mechanical collisions, avoid the decrease in buffering effect due to component damage, and improve the overall reliability and service life of the pressure regulating device of the machine tool filtration system.

[0041] See Figure 1 The material of the spiral blade 11 is stainless steel.

[0042] The spiral blade 11 is made of stainless steel, which has excellent corrosion resistance and can effectively resist the erosion of acid and alkali substances in fluids such as cutting fluid and lubricating oil. This prevents the surface of the spiral blade 11 from rusting and corroding, ensuring the structural integrity and smoothness of the spiral channel. It also avoids blade deformation and damage caused by material corrosion, which would affect the fluid guiding effect. At the same time, stainless steel has high strength and hardness, and is not prone to wear and dents under long-term fluid scouring and friction conditions. This maintains the stable guiding performance of the spiral blade 11 and ensures the uniform distribution and effective buffering of fluid pressure in the buffer tube 3. In addition, the smooth surface of stainless steel is not easy to adhere to impurities, making it easy to clean and maintain. This reduces the risk of channel blockage caused by impurity accumulation and ensures the long-term stable operation of the pressure regulating device of the machine tool filtration system.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pressure regulating device for a machine tool filtration system, comprising an inlet pipe (1), characterized in that: The buffer tube (3) is set inside the liquid inlet tube (1). Both ends of the buffer tube (3) are provided with annular air bags (4). A venting tube (10) is provided between the two air bags (4). The venting tube (10) is set on the buffer tube (3). The mounting component (5) is fixedly installed on one side of the airbag (4). An annular ring (6) is provided on one side of the mounting component (5). An elastic component (7), a buffer spring (8), and a damper (9) are provided between the mounting component (5) and the annular ring (6). The elastic components (7) are arranged alternately to form an X-shaped elastic component. The buffer spring (8) is sleeved on the outside of the damper (9).

2. A machine tool filtration system pressure regulating device as claimed in claim 1, wherein: The buffer assembly is arranged in a cross shape, and the buffer spring (8) and the damper (9) are also arranged in a cross shape.

3. The pressure regulating device for a machine tool filtration system as described in claim 2, characterized in that: The airbag (4) is equipped with annularly distributed tension springs inside.

4. The pressure regulating device for a machine tool filtration system as described in claim 3, characterized in that: The buffer tube (3) is provided with a spiral blade (11) inside, which makes the buffer tube (3) form a spiral channel.

5. The pressure regulating device for a machine tool filtration system as described in claim 4, characterized in that: A valve (2) is provided at one end of the liquid inlet pipe (1), and a pipe (12) is provided at the end of the valve (2) away from the liquid inlet pipe (1).

6. The pressure regulating device for a machine tool filtration system as described in claim 5, characterized in that: The elastic element (7) is made of spring steel.

7. The pressure regulating device for a machine tool filtration system as described in claim 6, characterized in that: The buffer spring (8) and damper (9) are fitted with bellows.

8. The pressure regulating device for a machine tool filtration system as described in claim 7, characterized in that: The material of the spiral blade (11) is stainless steel.

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