Damping and buffering device

Abstract

The utility model relates to the technical field of hydraulic pipeline connection, in particular to a damping and buffering device which comprises a connecting body and an elastic diaphragm, a communication space is formed in the connecting body, and the connecting body is further provided with a first port and a second port. The elastic diaphragm is arranged in the communication space, the elastic diaphragm is used for dividing the communication space into a gas cavity and a liquid cavity, the gas cavity comprises gas with certain pressure, and the liquid cavity is communicated with the first port and the second port. The damping and buffering device provided by the utility model is provided with the elastic diaphragm, so that the damping, buffering, pressure stabilizing and noise eliminating functions can be effectively played in a liquid transmission system such as oil liquid, the stability and the reliability of the system are improved, and the damping and buffering device has a wide application prospect.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pipeline connection technology, specifically to a shock absorption and buffer device. Background Technology

[0002] In hydraulic systems, pipe fittings or flanges are typically used for pipe connections and sealing. However, as hydraulic systems are increasingly used under various load conditions, the limitations of traditional pipe fitting or flange connections are becoming more apparent.

[0003] (1) Lack of buffering capacity: Traditional pipe joints or flanges, as rigid connection components, cannot effectively absorb and mitigate the impact force when pressure fluctuations occur in the hydraulic system, resulting in the impact force acting directly on the pipe connection.

[0004] (2) It is easy to cause leakage problems: Due to the inability to buffer the impact force, the threads at the pipe joint connection or the bolts at the flange connection are prone to loosening due to uneven force, which will damage the sealing effect between the pipe joints or flanges, and thus cause pipeline leakage, affecting the normal operation and sealing of the hydraulic system.

[0005] (3) Not resistant to high frequency vibration: In some testing industries, when high frequency vibration is tested, traditional pipe fittings or traditional flanges cannot effectively buffer the vibration. Long-term vibration will accelerate the fatigue damage of pipes and pipe fittings or pipes and flanges, reducing their service life.

[0006] (4) Unstable oil pressure: For electro-hydraulic servo closed-loop control, unstable oil pressure has a great impact on control accuracy.

[0007] (5) Noise problem: The rapid return of oil in the pipeline can easily cause noise pollution. Utility Model Content

[0008] This invention addresses the technical problems of lack of buffering, shock absorption, unstable pressure, and high noise caused by connections made using traditional pipe joints or flanges in the prior art. It proposes a shock-absorbing and buffering device with an elastic diaphragm, which can effectively perform shock absorption, buffering, pressure stabilization, and noise reduction functions in liquid transmission systems such as oil.

[0009] The technical solution of this utility model:

[0010] A shock-absorbing and buffering device, comprising:

[0011] A connecting body, wherein a communicating space is formed within the connecting body, and a first port and a second port are also provided on the connecting body;

[0012] An elastic diaphragm is disposed within the communicating space, and the elastic diaphragm is used to divide the communicating space into a gas chamber and a liquid chamber. The gas chamber includes gas under a certain pressure, and the liquid chamber is connected to the first port and the second port.

[0013] Wherein, the first port is a first pipe joint that is sealed and connected to the connecting body, and the second port is a second pipe joint that is sealed and connected to the connecting body.

[0014] Furthermore, the elastic diaphragm is wrapped to form an inner cavity, which is connected to the first port and the second port, and the liquid medium flows in the inner cavity.

[0015] Furthermore, the shock-absorbing device also includes a valve core, the elastic diaphragm is sleeved on the outside of the valve core and supported by the valve core; the valve core has a through channel, which is connected to the first port and the second port for the flow of liquid medium; the valve core also has a plurality of guide holes for guiding the liquid medium from the through channel to the liquid guide hole between the elastic diaphragm and the valve core.

[0016] Furthermore, the shock-absorbing device also includes a valve core, and the elastic diaphragm is sleeved on the outside of the valve core; the elastic diaphragm is disposed between the first port and the second port, and the two ends of the elastic diaphragm are respectively formed with a first flange and a second flange, the first flange is pressed against the first end of the valve core by the first port, and the second flange is pressed against the second end of the valve core by the second port.

[0017] Furthermore, the inner edge of the first flange also forms a first protrusion toward the first end of the valve core, and the first end of the valve core is provided with a corresponding first groove; the inner edge of the second flange also forms a second protrusion toward the second end of the valve core, and the second end of the valve core is provided with a corresponding second groove.

[0018] Furthermore, the connecting body includes a first cover plate, a second cover plate, and a housing that is sealed between the first cover plate and the second cover plate; the first port is sealed to the first cover plate, and the second port is sealed to the second cover plate.

[0019] Wherein, the first port is a first flange interface formed on the connecting body, and the second port is a second flange interface formed on the connecting body.

[0020] Furthermore, an installation groove is provided on the outer side wall of the connecting body, and the elastic diaphragm is placed in the installation groove; the elastic diaphragm has an opening facing the outside of the connecting body, and a cover is also connected to the connecting body. The cover presses the protruding edge of the opening of the elastic diaphragm against the connecting body, and an annular protrusion is formed on the inner side of the cover to fit against the inner wall of the opening of the elastic diaphragm; the cover is also provided with an inflation valve for filling gas into the gas cavity between the elastic diaphragm and the cover.

[0021] Furthermore, a liquid channel with a set cross-sectional size is formed inside the connecting body, and the liquid channel is connected with the mounting groove to form the communicating space; in the initial state, the elastic diaphragm extends into the liquid channel towards the inner end of the connecting body.

[0022] After adopting the above technical solution, the shock absorption and buffer device provided by this utility model has the following beneficial effects compared with the prior art: This utility model sets an elastic diaphragm in the connecting space within the connecting body, which separates and forms a liquid cavity and a gas cavity; when the liquid medium in the liquid cavity experiences vibration or pressure fluctuation, the elastic diaphragm can undergo elastic deformation in the form of expansion or contraction under the action of the pressure difference between the gas cavity and the liquid cavity, thereby absorbing the vibration energy of the liquid medium and playing the role of shock absorption and buffering. At the same time, it stabilizes the pressure of the liquid medium, effectively eliminates the noise caused by pressure fluctuation, and significantly improves the stability and reliability of the transmission system. Attached Figure Description

[0023] Figure 1 This is a perspective view of the shock absorption and buffer device of Embodiment 1;

[0024] Figure 2 This is a cross-sectional view of the shock absorption and buffer device in Embodiment 1;

[0025] Figure 3 This is a perspective view of the shock absorption and buffer device in Embodiment 2;

[0026] Figure 4 This is a cross-sectional view of the shock absorption and buffer device in Embodiment 2.

[0027] in,

[0028] The connection body 1 includes a first port 11, a second port 12, a first cover plate 13, a second cover plate 14, a housing 15, a mounting groove 16, and a liquid channel 17; an elastic diaphragm 2 includes a first through hole 21, a second through hole 22, a first flange 23, a first protrusion 231, a second flange 24, a second protrusion 241, and a raised edge 25; a gas chamber 3; a liquid chamber 4; a valve core 5 includes a through channel 51, a liquid guide hole 52, a first groove 53, and a second groove 54; a sealing ring 6; a cover 7 includes an annular protrusion 71; and an inflation valve 8. Detailed Implementation

[0029] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0030] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0032] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0033] The purpose of this invention is to provide a diaphragm-type shock absorption and buffer device for absorbing the vibration of the liquid medium in the pipeline during hydraulic pipeline connection, thereby playing a role in buffering, shock absorption, pressure stabilization, and noise reduction. Specific embodiments are described below.

[0034] Example 1:

[0035] like Figure 1-2As shown, the shock-absorbing and buffering device of this embodiment includes a connecting body 1 and an elastic diaphragm 2. The connecting body 1 is the main part of the entire device, and its overall shape can be set as needed. For example, in this embodiment, it is set as a cylinder, and its material is preferably carbon steel, stainless steel, alloy steel, or other materials with good mechanical strength. The connecting body 1 is provided with a first port 11 and a second port 12. In this embodiment, the first port 11 and the second port 12 are connectors connected to the connecting body 1. In other embodiments, the first port 11 and the second port 12 can also be openings directly formed on the connecting body 1.

[0036] The connecting body 1 has a communicating space, and the elastic diaphragm 2 is disposed within the communicating space. The elastic diaphragm 2 divides the communicating space into a liquid chamber 4 and a gas chamber 3. The liquid chamber 4 is connected to the first port 11 and the second port 12, allowing the flow of liquid media such as oil. The gas chamber 3 includes gas at a certain pressure, which can be filled with gas at a certain pressure to match the pressure of the liquid medium.

[0037] In this embodiment, by setting the elastic diaphragm 2, a liquid chamber 4 and a gas chamber 3 are formed. Compared with the prior art, when the liquid medium in the liquid chamber 4 experiences vibration or pressure fluctuations, the elastic diaphragm 2 can undergo elastic deformation in the form of expansion or contraction under the pressure difference between the gas chamber 3 and the liquid chamber 4, thereby absorbing the vibration energy of the liquid medium and playing a role in shock absorption and buffering. At the same time, it stabilizes the pressure of the liquid medium, effectively eliminating noise caused by pressure fluctuations, and significantly improving the stability and reliability of the transmission system. The elastic diaphragm 2 is preferably made of a material with good elasticity and oil resistance, such as rubber, synthetic rubber, or polyurethane, to ensure that it can maintain good performance and durability during long-term use.

[0038] like Figure 2 As shown, in this embodiment, the first port 11 is a first pipe connector sealed to the connecting body 1, and the second port 12 is a second pipe connector sealed to the connecting body 1. The first and second pipe connectors can be standard connectors or non-standard customized connectors; they can be externally threaded or internally threaded; they can be male or female connectors. Preferably, the first and second pipe connectors are installed at both ends of the connecting body 1 via a threaded connection and a sealing ring 6; the first and second pipe connectors can be connected to corresponding external connectors. This forms a shock-absorbing and buffering pipe connector device suitable for pipeline connections in medium and high pressure scenarios.

[0039] Furthermore, the elastic diaphragm 2 itself has an inner cavity, which forms the liquid cavity 4. The inner cavity is connected to the first port 11 and the second port 12, and the liquid medium can flow in the inner cavity. This allows the deformation recovery force of the elastic diaphragm 2 itself to provide a certain buffering and shock absorption function, which, together with the gas cavity 3, is more suitable for medium and high pressure applications.

[0040] Furthermore, the shock-absorbing and buffering device in this embodiment also includes a valve core 5, which is disposed inside the connecting body 1. The valve core 5 is a core body, preferably cylindrical. The elastic diaphragm 2 is sleeved on the outside of the valve core 5 and is held in place by the valve core 5. In this way, the valve core 5 opens the elastic diaphragm 2 to a certain extent, which can reduce the pressure loss of the liquid medium. The valve core 5 is provided with a through channel 51, which is connected to the first port 11 and the second port 12, allowing the flow of liquid media such as oil. The side wall of the valve core 5 is also provided with a number of guide holes 52 for guiding the liquid medium from the through channel 51 to the space between the elastic diaphragm 2 and the valve core 5. When the pressure of the liquid medium suddenly increases, the elastic diaphragm 2 is pushed up through the guide holes 52, and the elastic diaphragm 2 undergoes elastic deformation, thereby absorbing the vibration energy and playing a role in shock absorption and buffering. The position and number of the guide holes 52 can be set as needed. For example, multiple groups can be set along the axial direction of the valve core 5, and each group of guide holes 52 can be set to multiple and evenly distributed circumferentially.

[0041] Furthermore, the valve core 5 and the elastic diaphragm 2 are disposed between the first port 11 and the second port 12; the two ends of the elastic diaphragm 2 are respectively formed with a first flange 23 and a second flange 24, the first flange 23 is pressed against the first end of the valve core 5 by the first port 11, and the second flange 24 is pressed against the second end of the valve core 5 by the second port 12; a first through hole 21 is formed at the center of the first flange 23, allowing the first end of the valve core 5 to extend and connect with the first port 11, and a second through hole 22 is formed at the center of the second flange 24, allowing the second end of the valve core 5 to extend and connect with the second port 12. Thus, by configuring the valve core 5 in conjunction with the first and second pipe fittings, the elastic diaphragm 2 can be reliably and conveniently assembled. Preferably, the inner edge of the first flange 23 also forms a first protrusion 231 facing the first end of the valve core 5, and the first end of the valve core 5 is correspondingly provided with a first groove 53; the inner edge of the second flange 24 also forms a second protrusion 241 facing the second end of the valve core 5, and the second end of the valve core 5 is correspondingly provided with a second groove 54. This allows the elastic diaphragm 2 to be pre-installed on the valve core 5, facilitating subsequent tightening and improving the sealing effect after tightening.

[0042] Furthermore, the connecting body 1 in this embodiment includes a first cover plate 13, a second cover plate 14, and a housing 15 sealed between the first cover plate 13 and the second cover plate 14. A gas chamber 3 is formed between the elastic diaphragm 2 and the housing 15. An inflation valve can be installed by providing mounting holes on the first cover plate 13, the second cover plate 14, or the housing 15. Gas at a certain pressure is injected through the inflation valve. By reasonably controlling the gas pressure, it is matched with the pressure of the liquid medium in the liquid chamber 4, thereby achieving the functions of shock absorption, buffering, stabilizing liquid pressure, and eliminating noise. Alternatively, it can be installed under different atmospheric pressure environments to ensure a certain gas pressure within the gas chamber 3. The first cover plate 13 and the housing 15 can be sealed together by threads or welding; the second cover plate 14 and the housing 15 can also be sealed together by threads or welding to ensure the reliability and sealing of the connection. Both the first cover plate 13 and the second cover plate 14 have threaded holes in their middle portions for installation and connection with the first and second pipe joints, respectively. By setting the connecting body 1 as a split type, it is easier to form the gas chamber 3, and also easier to assemble the valve core 5 and the elastic diaphragm 2.

[0043] The following is an exemplary embodiment of a specific implementation of the shock absorption and buffer device during installation and use, wherein...

[0044] 1. Installation:

[0045] Connect the second pipe fitting (second port 12) and the second cover plate 14 to the housing 15 (by means of threading or welding, etc.).

[0046] The elastic diaphragm 2 is pre-fixed to the valve core 5 and then installed into the housing 15;

[0047] Fix the first cover plate 13 and the first pipe joint (first port 11) and fix them to the housing 15 (by means of threading or welding, etc.), and press and fix the elastic diaphragm 2.

[0048] 2. Inflation:

[0049] Assembly is performed under different atmospheric pressure environments to set different pressures in the gas chamber 3.

[0050] 3. Usage:

[0051] When the liquid medium flows through the through channel 51 of the valve core 5, if the liquid medium vibrates or the pressure fluctuates, the elastic diaphragm 2 can undergo elastic deformation under the pressure difference between the gas chamber 3 and the through channel 51, thereby absorbing the vibration energy of the liquid medium and playing the role of shock absorption and buffering. At the same time, it stabilizes the pressure of the liquid medium, effectively eliminates the noise caused by pressure fluctuations, and significantly improves the stability and reliability of the transmission system.

[0052] During use, different gas chamber 3 pressure devices are selected according to different liquid medium pressures to ensure shock absorption and buffering effect.

[0053] As can be seen from the above, the shock absorption and buffer device provided in this embodiment has the following advantages:

[0054] (1) Significant vibration reduction effect: By setting an elastic diaphragm 2 between the gas chamber 3 and the liquid chamber 4 / through channel 51, when the liquid medium such as oil in the liquid chamber 4 / through channel 51 vibrates, the gas chamber 3 outside the elastic diaphragm 2 can effectively absorb the vibration energy, greatly reducing the vibration amplitude during transmission, reducing the risk of pipeline connection loosening and equipment damage caused by vibration, and improving the stability and reliability of the entire system.

[0055] (2) Excellent buffering and pressure stabilization function: The gas in the gas chamber 3 can be compressed and expanded when the liquid pressure fluctuates, which plays a good buffering role, keeps the liquid pressure relatively stable, avoids the impact on other components in the system due to sudden pressure changes, extends the service life of the equipment, and also helps to improve the accuracy and efficiency of liquid medium transmission.

[0056] (3) Good noise reduction effect: Pressure fluctuations and vibrations of liquid media during transmission are often the main sources of noise. Through the cooperation of elastic diaphragm 2 and gas chamber 3, these factors are effectively suppressed, significantly reducing the noise level of the system, improving the working environment, and meeting the requirements of modern industry for environmental protection and low noise.

[0057] (4) Reasonable structural design: The fit between the various components such as the shell 15, the first cover plate 13, the second cover plate 14, the valve core 5, the elastic diaphragm 2, the first pipe joint and the second pipe joint is tight and the structure is compact, which not only facilitates installation and maintenance, but also has good adaptability and practicality.

[0058] (5) Stabilize liquid medium pressure: Stabilize liquid medium pressure to improve the accuracy of electro-hydraulic servo closed-loop control.

[0059] Example 2:

[0060] like Figure 3-4As shown, this embodiment also provides a shock-absorbing and buffering device, which also includes a connecting body 1 and an elastic diaphragm 2. The connecting body 1 is the main part of the entire device and can be designed into a suitable shape as needed, for example, a cuboid in this embodiment. Its material can be carbon steel, stainless steel, alloy steel, or other materials with good mechanical strength and corrosion resistance. A communicating space is formed inside the connecting body 1, and the elastic diaphragm 2 is disposed in the communicating space. The layout and size of the communicating space can be designed and optimized according to the flow rate and pressure of liquid media such as oil and the installation requirements of the elastic diaphragm 2 to ensure the coordination and normal functioning of each component.

[0061] The connecting body 1 is further provided with a first port 11 and a second port 12. The connecting body 1 is formed as a flange body. The first port 11 is a first flange interface formed on the connecting body 1, and the second port 12 is a second flange interface formed on the connecting body 1. This forms a shock-absorbing and buffering flange device adapted for pipeline connections in medium and low pressure scenarios. These flange interfaces are used to connect with external pipelines, valve blocks, or other structures that require flange connections to construct a liquid medium transmission channel. The connection method can be bolted, welded, or any other existing connection method to ensure the stability and sealing of the connection. The position and number of these flange interfaces can be designed and arranged according to actual application requirements to meet the connection requirements of different pipeline systems or equipment. For example, in this embodiment, there is one first flange interface and one second flange interface, arranged at 180 degrees. In other embodiments, the first flange interface and the second flange interface can also be arranged at 90 degrees, and the number of the first flange interface and the second flange interface can also be multiple, etc.

[0062] The elastic diaphragm 2 divides the communicating space into a gas chamber 3 and a liquid chamber 4, for example... Figure 4 As shown, the space below the elastic diaphragm 2 is a liquid chamber 4, which connects the first port 11 and the second port 12 of the connecting body 1, providing a channel for the flow of liquid media such as oil. Its shape and size can be optimized according to parameters such as the flow rate, velocity and pressure of the liquid medium to ensure smooth flow of the liquid medium and reduce flow resistance and energy loss. The arrangement of the oil passage can be selected, but is not limited to, straight, curved, S-shaped or branched, etc., to adapt to different pipeline layouts and liquid flow direction requirements.

[0063] The space above the elastic diaphragm 2 is a gas chamber 3, which can be filled with gas at a certain pressure, causing the elastic diaphragm 2 to expand. By reasonably controlling the gas pressure to match the pressure of the liquid medium, when the liquid medium in the liquid chamber 4 experiences vibration or pressure fluctuations, the elastic diaphragm 2 can elastically deform under the pressure difference between the gas chamber 3 and the liquid chamber 4, thereby absorbing the vibration energy of the liquid medium and playing a role in shock absorption and buffering. At the same time, it stabilizes the pressure of the liquid medium, effectively eliminating noise caused by pressure fluctuations, and significantly improving the stability and reliability of the transmission system. The elastic diaphragm 2 is preferably made of a material with good elasticity and oil resistance, such as rubber, synthetic rubber, or polyurethane, to ensure that it can maintain good performance and durability during long-term use.

[0064] Furthermore, in this embodiment, an installation groove 16 is provided on the outer wall of the connecting body 1, and the installation groove 16 is used to place the elastic diaphragm 2. The elastic diaphragm 2 is generally bowl-shaped and has an opening facing outward of the connecting body 1. A cover 7 is also connected to the connecting body 1. The cover 7 is used to seal and protect the elastic diaphragm 2. The cover 7 and the connecting body 1 can be tightly fixed by bolts, buckles or other existing connection methods to ensure the airtightness of the gas chamber 3 and prevent gas leakage. A protruding edge 25 is also formed at the opening of the elastic diaphragm 2. The cover 7 presses the protruding edge 25 tightly onto the connecting body 1. An annular protrusion 71 is also formed on the inner side of the cover 7 to fit tightly against the inner wall of the opening of the elastic diaphragm 2, thereby better pressing the elastic diaphragm 2.

[0065] Furthermore, the cover 7 is provided with an installation hole, in which an inflation valve 8 is installed. One end of the inflation valve 8 is connected to the gas chamber 3 between the elastic diaphragm 2 and the cover 7, and the other end extends to the outside, facilitating the operator to inflate gas into the gas chamber 3 through the inflation valve 8. The gas pressure within the gas chamber 3 can be adjusted according to actual needs to achieve precise control and optimization of the diaphragm's shock absorption and buffering performance. The shape and size of the gas chamber 3 can be designed based on factors such as the size of the elastic diaphragm 2, the liquid pressure range, and the required shock absorption and buffering effect, ensuring that the gas in the gas chamber 3 has sufficient space to compress and expand when the liquid pressure fluctuates, thereby effectively absorbing and buffering the vibration energy of the liquid.

[0066] Furthermore, in this embodiment, a liquid channel 17 with a predetermined cross-sectional size is formed within the connecting body 1. The cross-sectional shape is preferably circular. This liquid channel 17 communicates with the mounting groove 16 to form the aforementioned communicating space. In the initial state, the elastic diaphragm 2 extends towards the inner end of the connecting body 1 into a portion of the liquid channel 17, thereby appropriately increasing the size of the elastic diaphragm 2 and the space of the gas chamber 3, while also further enhancing the shock absorption and buffering effect.

[0067] The following is an exemplary embodiment of a specific implementation of the shock absorption and buffer device during installation and use, wherein...

[0068] 1. Installation:

[0069] Align the first flange interface (first port 11) and the second flange interface (second port 12) with the connection interface of the external pipeline or valve block. Bolt connection, welding or other reliable connection methods can be used to ensure the stability and sealing of the connection, so that the connection body 1 is tightly connected to the external structure.

[0070] Install the elastic diaphragm 2 in the communication space within the connecting body 1, ensuring that the elastic diaphragm 2 is flat and well-sealed.

[0071] Cover the elastic diaphragm 2 with the cover 7, and fasten the cover 7 to the connecting body 1 with bolts or other means to ensure the airtightness of the gas chamber 3.

[0072] Install the inflation valve 8 into the mounting hole of the cover 7.

[0073] 2. Inflation:

[0074] Gas is introduced into the gas chamber 3 through the inflation valve 8. During the inflation process, a pressure gauge can be used to monitor the gas pressure inside the gas chamber 3. The gas pressure is controlled by adjusting the inflation valve 8 according to the working pressure of the liquid and the required shock absorption effect, so that the gas pressure is maintained within a suitable range. For example, when the working pressure of the liquid medium such as oil is 0.5MPa, the gas pressure in the gas chamber 3 can be set to 0.4-0.45MPa.

[0075] 3. Usage:

[0076] When the liquid medium flows in the liquid chamber 4, if vibration or pressure fluctuation occurs, the gas in the gas chamber 3 above the elastic diaphragm 2 will absorb the vibration energy, causing the elastic diaphragm 2 to undergo elastic deformation, thereby achieving the effects of shock absorption, buffering and pressure stabilization of the liquid, while reducing the noise generated by the liquid flow.

[0077] During use, the gas pressure in the gas chamber 3 can be checked periodically through the inflation valve 8. If the gas pressure drops or does not meet the requirements, the gas can be replenished or the gas pressure adjusted in time through the inflation valve 8 to ensure its shock absorption and buffering effect.

[0078] As can be seen from the above, the shock absorption and buffer device provided in this embodiment has the following advantages:

[0079] (1) Significant vibration reduction effect: By setting an elastic diaphragm 2 between the gas chamber 3 and the liquid chamber 4 in the main body 1, when the liquid medium in the liquid chamber 4 vibrates, the gas chamber 3 above the elastic diaphragm 2 can effectively absorb the vibration energy, greatly reducing the vibration amplitude during liquid transmission, reducing the risk of pipeline connection loosening and equipment damage caused by vibration, and improving the stability and reliability of the entire system.

[0080] (2) Excellent buffering and pressure stabilization function: The gas in the gas chamber 3 can be compressed and expanded when the liquid pressure fluctuates, which plays a good buffering role, keeps the liquid pressure relatively stable, avoids the impact on other components in the system due to sudden pressure changes, extends the service life of the equipment, and also helps to improve the accuracy and efficiency of transmission.

[0081] (3) Good noise reduction effect: Pressure fluctuations and vibrations of liquid during transmission are often the main sources of noise. Through the cooperation of elastic diaphragm 2 and gas chamber 3, these factors are effectively suppressed, significantly reducing the noise level of the system, improving the working environment, and meeting the requirements of modern industry for environmental protection and low noise.

[0082] (4) Reasonable structural design: The components such as the main body 1, elastic diaphragm 2, cover 7 and inflation valve 8 are closely matched and the structure is compact. It is not only easy to install and maintain, but also will not occupy too much space in the original pipeline system layout. It has good adaptability and practicality.

[0083] (5) Easy to operate: The gas pressure in the gas chamber 3 can be easily adjusted by the inflation valve 8 to adapt to the changing liquid pressure requirements under different working conditions. The operation is simple and quick, without the need for complicated equipment and tools, which is convenient for on-site operation and management.

[0084] (6) Stabilize liquid pressure: Stabilize liquid pressure to improve the accuracy of electro-hydraulic servo closed-loop control.

[0085] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A shock absorbing cushioning device, characterized by, include: A connecting body (1) is provided, and a connecting space is formed inside the connecting body (1). The connecting body (1) is also provided with a first port (11) and a second port (12). An elastic diaphragm (2) is disposed in the communicating space. The elastic diaphragm (2) is used to divide the communicating space into a gas chamber (3) and a liquid chamber (4). The gas chamber (3) includes a gas with a certain pressure. The liquid chamber (4) is connected to the first port (11) and the second port (12).

2. The shock absorbing bumper device of claim 1, wherein, The first port (11) is a first pipe joint that is sealed to the connecting body (1), and the second port (12) is a second pipe joint that is sealed to the connecting body (1).

3. The shock absorbing bumper device of claim 2, wherein, The elastic diaphragm (2) is wrapped to form an inner cavity, which is connected to the first port (11) and the second port (12), and the liquid medium flows in the inner cavity.

4. The shock absorbing bumper device of claim 3, wherein, The shock-absorbing and buffering device also includes a valve core (5), the elastic diaphragm (2) is sleeved on the outside of the valve core (5) and is supported by the valve core (5); the valve core (5) is provided with a through channel (51), the through channel (51) is connected to the first port (11) and the second port (12) for the flow of liquid medium; the valve core (5) is also provided with a number of liquid guiding holes (52) for guiding the liquid medium from the through channel (51) to the liquid guiding hole between the elastic diaphragm (2) and the valve core (5).

5. Shock absorbing cushioning device according to claim 3 or 4, characterized in that The shock-absorbing device also includes a valve core (5), and the elastic diaphragm (2) is sleeved on the outside of the valve core (5); the elastic diaphragm (2) is disposed between the first port (11) and the second port (12), and the two ends of the elastic diaphragm (2) are respectively formed with a first flange (23) and a second flange (24). The first flange (23) is pressed against the first end of the valve core (5) by the first port (11), and the second flange (24) is pressed against the second end of the valve core (5) by the second port (12).

6. The shock absorption and buffer device according to claim 5, characterized in that, The inner edge of the first flange (23) also forms a first protrusion (231) facing the first end of the valve core (5), and the first end of the valve core (5) is provided with a first groove (53); the inner edge of the second flange (24) also forms a second protrusion (241) facing the second end of the valve core (5), and the second end of the valve core (5) is provided with a second groove (54).

7. The shock absorbing bumper of claim 2, wherein, The connecting body (1) includes a first cover plate (13), a second cover plate (14) and a housing (15) sealed between the first cover plate (13) and the second cover plate (14); the first port (11) is sealed on the first cover plate (13) and the second port (12) is sealed on the second cover plate (14).

8. The shock absorbing bumper apparatus of claim 1, wherein, The first port (11) is a first flange interface formed on the connecting body (1), and the second port (12) is a second flange interface formed on the connecting body (1).

9. The shock absorbing bumper device of claim 8, wherein, An installation groove (16) is provided on the outer side wall of the connecting body (1), and the elastic diaphragm (2) is placed in the installation groove (16). The elastic diaphragm (2) has an opening facing the outside of the connecting body (1). A cover (7) is also connected to the connecting body (1). The cover (7) presses the protruding edge (25) at the opening of the elastic diaphragm (2) against the connecting body (1). An annular protrusion (71) is also formed on the inner side of the cover (7) to fit against the inner wall of the opening of the elastic diaphragm (2). An inflation valve (8) is also provided on the cover (7) for filling gas into the gas cavity (3) between the elastic diaphragm (2) and the cover (7).

10. The shock absorbing bumper device of claim 9, wherein, The connecting body (1) has a liquid channel (17) with a set cross-sectional size, and the liquid channel (17) and the mounting groove (16) are connected together to form the communicating space; in the initial state, the elastic diaphragm (2) extends into the liquid channel (17) towards the inner end of the connecting body (1).

Images