Exhaust silencer for solenoid valve

Abstract

The utility model discloses an exhaust silencing device of electromagnetic valve relates to electromagnetic valve technical field, include: first connecting pipe, expansion silencer and pressure reducing silencing structure, first connecting pipe is used for with the exhaust hole of electromagnetic valve is connected, expansion silencer's first end is communicated with first connecting pipe, and the inside diameter of expansion silencer is greater than the inside diameter of first connecting pipe to form expansion chamber in expansion silencer, pressure reducing silencing structure sets up on expansion silencer, is used for carrying out pressure reduction and silencing to the gas after passing through expansion chamber, wherein, the inside of expansion silencer is filled with silencing material, and the second end of expansion silencer is provided with the seal end cover of openable. Through the drainage silencing of the gas of electromagnetic valve discharge, avoid the personnel to be interfered with strong air current and big noise when handling the fault, eliminate the security risk, ensure valve action speed is not affected simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an exhaust silencing device for electromagnetic valves. Background Technology

[0002] In existing technologies, solenoid valves, as key components controlling the reversal of the air path to actuate the valve, exhibit significant problems during operation. Each time the solenoid valve actuates, compressed gas is sent into one side of the cylinder while simultaneously venting compressed gas directly from the other side. This vented gas is characterized by high pressure, large flow rate, and loud noise. This causes numerous problems and safety hazards for operators. For example, when troubleshooting, personnel are easily disturbed by the strong airflow, or even blown into their faces, causing fright and affecting work safety. Furthermore, the significant exhaust noise negatively impacts the working environment. Therefore, the existing solenoid valve venting method urgently needs improvement. Adding a gas-guiding silencer device to effectively guide and silence the vented gas without affecting the valve's actuation speed is key to solving the problem. Utility Model Content

[0003] The purpose of this invention is to provide a silencing device for the exhaust of a solenoid valve, solving the problems of high gas pressure, large flow rate, and loud noise during exhaust of solenoid valves in the prior art. By diverting and silencing the gas discharged from the solenoid valve, it avoids interference from strong airflow and loud noise when personnel are troubleshooting, eliminating safety hazards, while ensuring that the valve's operating speed is not affected.

[0004] To achieve the above objectives, this utility model provides the following solution:

[0005] This utility model provides an exhaust silencing device for a solenoid valve, comprising: a first connecting pipe, an expansion silencing pipe, and a pressure-reducing silencing structure. The first connecting pipe is used to connect to the exhaust port of the solenoid valve. The first end of the expansion silencing pipe is connected to the first connecting pipe, and the inner diameter of the expansion silencing pipe is larger than the inner diameter of the first connecting pipe to form an expansion cavity within the expansion silencing pipe. The pressure-reducing silencing structure is disposed on the expansion silencing pipe and is used to reduce the pressure and silence the gas passing through the expansion cavity. The interior of the expansion silencing pipe is filled with silencing material, and the second end of the expansion silencing pipe is provided with an openable sealing end cap.

[0006] Preferably, the pressure-reducing silencing structure includes a plurality of micropores formed on the wall of the expansion silencing tube.

[0007] Preferably, the plurality of micropores are located on the side of the wall of the expansion silencer tube and are distributed in the area between the axial center of the expansion silencer tube and the sealing end cap.

[0008] Preferably, the first connecting pipe is detachably connected to the exhaust port of the solenoid valve via a first thread.

[0009] Preferably, the sealing end cap is a plug that is connected to the second end of the expansion silencer tube via a second thread.

[0010] Preferably, the first connecting pipe and the first end of the expansion silencer pipe are integrally connected by heat fusion.

[0011] Preferably, the sound-absorbing material is a filter sound-absorbing cotton.

[0012] Preferably, the first connecting pipe, the expansion silencer pipe, and the pressure-reducing silencer structure together constitute a three-stage silencer and pressure-reducing system for the exhaust gas, which performs preliminary expansion and pressure reduction, forced filtration and silencer, and final microporous diffusion.

[0013] The present invention achieves the following technical advantages over the prior art:

[0014] This invention provides an exhaust silencing device for a solenoid valve. By connecting a first connecting pipe to the exhaust port of the solenoid valve, the exhaust gas first enters a larger-diameter expansion silencing pipe. The expansion chamber achieves initial expansion and pressure reduction of the gas, decreasing the impact intensity of the airflow. The silencing material filled inside the expansion silencing pipe forces the airflow to filter and reduce noise, further absorbing noise and slowing the airflow speed. A pressure-reducing silencing structure on the expansion silencing pipe further reduces pressure and noise by dispersing the airflow. An openable sealing end cap facilitates the replacement and maintenance of the silencing material inside the expansion silencing pipe, ensuring the device maintains its silencing and pressure-reducing effects stably over the long term. This effectively solves the problems of high gas pressure, large flow rate, and loud noise during solenoid valve exhaust, creating a safer and more comfortable working environment for operators. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the exhaust silencing device for the solenoid valve provided by this utility model;

[0017] Figure 2 A side view of the exhaust silencing device for the solenoid valve provided by this utility model;

[0018] Figure 3 A schematic diagram of the structure of the exhaust silencer device for the solenoid valve provided by this utility model, installed on the solenoid valve.

[0019] In the diagram: 1. Solenoid valve; 2. Plug; 3. Micropore; 4. Expansion silencer tube; 5. First connecting tube; 6. First thread; 7. Second thread; 8. Filter silencer cotton. Detailed Implementation

[0020] 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.

[0021] The purpose of this invention is to provide a silencing device for the exhaust of a solenoid valve, solving the problems of high gas pressure, large flow rate, and loud noise during exhaust of solenoid valves in the prior art. By diverting and silencing the gas discharged from the solenoid valve, it avoids interference from strong airflow and loud noise when personnel are troubleshooting, eliminating safety hazards, while ensuring that the valve's operating speed is not affected.

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This utility model provides an exhaust silencing device for a solenoid valve 1, such as... Figures 1-3 As shown, the device includes: a first connecting pipe 5, an expansion silencer pipe 4, and a pressure-reducing silencer structure. The first connecting pipe 5 is used to connect to the exhaust port of the solenoid valve 1. The first end of the expansion silencer pipe 4 is connected to the first connecting pipe 5, and the inner diameter of the expansion silencer pipe 4 is larger than the inner diameter of the first connecting pipe 5 to form an expansion cavity inside the expansion silencer pipe 4. The pressure-reducing silencer structure is provided on the expansion silencer pipe 4 to reduce the pressure and silence the gas after passing through the expansion cavity. The expansion silencer pipe 4 is filled with silencing material, and the second end of the expansion silencer pipe 4 is provided with an openable sealing end cap. This structural design forms a complete exhaust silencing path. The first connecting pipe 5 facilitates the connection of the device to the solenoid valve 1. The expansion cavity formed by the inner diameter of the expansion silencer pipe 4 being larger than the inner diameter of the first connecting pipe 5 allows the exhaust gas to diffuse rapidly after entering, reducing the gas pressure and flow rate, thus playing a preliminary pressure-reducing role. The internal filling with silencing material and the provision of the pressure-reducing silencer structure can further reduce the gas pressure and eliminate noise. The openable sealing end cap facilitates the replacement or maintenance of the internal silencing material.

[0024] In a preferred embodiment, the pressure-reducing and noise-reducing structure includes multiple micropores 3 formed on the wall of the expansion silencer pipe 4. The design of the micropores 3 allows the gas, after initial pressure reduction in the expansion chamber, to be dispersed and buffered as it passes through the micropores 3, further reducing the gas pressure and flow rate. Simultaneously, as the gas passes through the micropores 3, the friction and obstruction caused by the micropores consume the gas's energy, thereby effectively reducing exhaust noise and achieving the effect of pressure reduction and noise reduction.

[0025] In a preferred embodiment, multiple micropores 3 are located on the side of the expansion silencer pipe 4 wall and distributed in the area between the axial center of the expansion silencer pipe 4 and the sealing end cap. Positioning the micropores 3 in this specific area allows the gas to fully diffuse and undergo initial pressure reduction within the expansion chamber before passing through the micropores 3 for further pressure reduction and silencing, making the entire pressure reduction and silencing process more layered and effective. Furthermore, this arrangement ensures that the exhaust gas, after sufficient treatment, is discharged from the device in a relatively stable and low-noise state, which is beneficial for improving the silencing effect and the overall performance of the device.

[0026] In a preferred embodiment, the first connecting pipe 5 is detachably connected to the vent hole of the solenoid valve 1 via the first thread 6. The detachable threaded connection not only makes installation simple and quick, but also makes it easy to remove the first connecting pipe 5 from the vent hole of the solenoid valve 1 when the device needs to be repaired, replaced, or adapted to different solenoid valves 1, thereby improving the versatility and maintainability of the device.

[0027] In a preferred embodiment, the sealing end cap is a plug 2 connected to the second end of the expansion silencer tube 4 via a second thread 7. Using the plug 2 as the sealing end cap and connecting it by thread ensures the sealing performance of the expansion silencer tube 4 while making it convenient for operators to unscrew the plug 2 to replace, clean, or maintain the silencing material filled inside the tube, thus reducing maintenance costs and difficulty.

[0028] In a preferred embodiment, the first connecting pipe 5 and the first end of the expansion silencer pipe 4 are integrally connected by heat fusion. The heat fusion connection makes the connection between the first connecting pipe 5 and the expansion silencer pipe 4 more robust and reliable, avoiding problems such as leakage at the connection point, and ensuring that exhaust gas can smoothly enter the expansion silencer pipe 4 from the first connecting pipe 5 for treatment. Moreover, the integral connection structure also helps to improve the overall stability and durability of the device.

[0029] In a preferred embodiment, the sound-absorbing material is filter sound-absorbing cotton 8, which has good sound absorption performance and filtration effect. When gas passes through the filter sound-absorbing cotton 8, sound waves are reflected and scattered multiple times in the pores of the cotton fibers, thereby consuming sound energy and effectively reducing noise. At the same time, it can also filter some impurities in the gas, extend the service life of the device, and further help reduce gas pressure, thus playing a better role in pressure reduction and noise reduction.

[0030] In a preferred embodiment, the first connecting pipe 5, the expansion silencer pipe 4, and the pressure-reducing silencer structure together constitute a three-stage silencer and pressure-reducing system for the discharged gas, which performs preliminary expansion and pressure reduction, forced filtration and silencing, and final-stage microporous diffusion 3. This three-stage silencer and pressure-reducing system design gradually reduces the pressure and efficiently silences the gas discharged from the solenoid valve 1 at different stages and based on different principles. Preliminary expansion and pressure reduction lowers the initial pressure of the gas, forced filtration and silencing reduce noise and further lower the pressure, and final-stage microporous diffusion 3 further treats the airflow before the gas is discharged, so that the final discharged gas pressure and noise reach a low level, greatly improving the silencer and pressure-reducing effect of the device and better meeting the actual use requirements.

[0031] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A solenoid valve exhaust silencing device, characterized in that: include: The first connecting pipe is used to connect to the exhaust port of the solenoid valve; An expansion silencer tube, wherein the first end of the expansion silencer tube is connected to the first connecting tube, and the inner diameter of the expansion silencer tube is larger than the inner diameter of the first connecting tube to form an expansion cavity inside the expansion silencer tube; A pressure-reducing and noise-reducing structure is provided on the expansion silencer pipe for reducing the pressure and silencing the gas after it passes through the expansion chamber; The expansion silencer tube is filled with sound-absorbing material, and the second end of the expansion silencer tube is provided with an openable sealing end cap.

2. The exhaust silencing device for the solenoid valve according to claim 1, characterized in that: The pressure-reducing silencing structure includes multiple micropores formed on the wall of the expansion silencing tube.

3. The exhaust silencing device for the solenoid valve according to claim 2, characterized in that: Multiple micropores are located on the side of the expansion silencer tube wall and are distributed in the area between the axial center of the expansion silencer tube and the sealing end cap.

4. The exhaust silencing device for the solenoid valve according to claim 1, characterized in that: The first connecting pipe is detachably connected to the exhaust port of the solenoid valve via a first thread.

5. The exhaust silencing device for the solenoid valve according to claim 1, characterized in that: The sealing end cap is a plug that is connected to the second end of the expansion silencer tube via a second thread.

6. The exhaust silencing device for the solenoid valve according to claim 1, characterized in that: The first connecting pipe is integrally connected to the first end of the expansion silencer pipe by heat fusion.

7. The exhaust silencing device for the solenoid valve according to claim 1, characterized in that: The sound-absorbing material is a sound-absorbing filter cotton.

8. The exhaust silencing device for the solenoid valve according to claim 1, characterized in that: The first connecting pipe, the expansion silencer pipe, and the pressure reduction silencer structure together constitute a three-stage silencer and pressure reduction system for the exhaust gas, which performs preliminary expansion and pressure reduction, forced filtration and silencer, and final microporous diffusion.

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