Pressure relief noise control device
By designing a pressure relief noise control device in the supercritical fluid molding foaming method, and optimizing the exhaust pipeline structure with a safety pressure relief valve and muffler, the problem of high noise during pressure relief is solved, and effective noise suppression and production safety are achieved.
Patent Information
- Application Number
- CN202421290888.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In the supercritical fluid molding foaming method, the rapid discharge of supercritical fluid during pressure relief will produce a lot of noise, and its pressure release needs to be regulated to effectively suppress noise and ensure production safety and molding quality.
A pressure relief noise control device is designed, including a machine and a molding mold. The mold is equipped with an intake pipe and multiple exhaust pipes. A safety pressure relief valve and a muffler are installed on the exhaust pipe to ensure that the gas release speed does not exceed 20m/s and the noise is weakened through the muffler.
It effectively suppresses noise generation, ensures production safety and molding quality, and achieves gas release control and noise reduction by optimizing the exhaust pipeline structure and using safety pressure relief valves and mufflers.
Smart Images
Figure CN222697738U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foaming molding, in particular to a pressure relief noise control device. Background Art
[0002] At present, the industry uses a high-temperature and high-pressure supercritical fluid compression foaming method to produce polymer foam products. The process is to process the thermoplastic polymer microporous foam material into a certain shape, then heat the foaming mold on the molding machine, and after reaching the foaming temperature, put the prefabricated polymer blank into the mold, the molding machine is sealed, and a supercritical fluid (such as supercritical carbon dioxide or supercritical nitrogen, etc.) is filled into the mold to make the polymer swell and diffuse. Then the molding machine is opened to release pressure and foam, and a polymer microporous foam product with controllable pore size and density can be obtained. However, during the pressure-opening process, the rapid discharge of the supercritical fluid during pressure release will generate a lot of noise, and its pressure release needs to be regulated to effectively suppress the noise and ensure production safety and molding quality. Utility Model Content
[0003] Based on the above problems, the purpose of the utility model is to provide a pressure relief noise control device to reasonably discharge gas and simultaneously suppress noise.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A pressure relief noise control device comprises a machine platform and a forming die arranged on the machine platform, an air intake pipeline and a plurality of exhaust pipelines are arranged on the forming die, the plurality of exhaust pipelines are merged into a centralized pipeline, an on-off valve is arranged on the air intake pipeline, a safety pressure relief valve is arranged on each exhaust pipeline, the safety pressure relief valve makes the gas release speed in the centralized pipeline not exceed 20m / s, and a muffler is arranged at the end of the centralized pipeline.
[0006] As an optional solution, a pressure display is provided on each exhaust pipeline and between the molding die and the safety pressure relief valve. The pressure display is used to detect and display the exhaust pressure of the molding die.
[0007] As an optional solution, the exhaust pipelines are distributed on both sides of the forming mold, and a centralized pipeline is correspondingly arranged on each side of the forming mold, and the two centralized pipelines are interconnected.
[0008] As an optional solution, the exhaust line extends from the side of the molding die and extends upward, and the centralized line is connected to the exhaust line and then routed above the top of the machine.
[0009] As an alternative, the air inlet line projects horizontally from the side of the forming die.
[0010] The beneficial effects of the utility model are as follows: the pressure relief noise control device optimizes the air intake and exhaust pipes of the existing molding mold, especially a safety pressure relief valve is arranged on the exhaust pipe to control the release of gas at a speed below 20m / s for a short time, and cooperates with the muffler to weaken the influence of dynamic noise, thereby effectively suppressing the generation of noise. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of a pressure relief noise control device provided in an embodiment of the utility model.
[0012] In the attached figure:
[0013] 1. Machine; 2. Forming mold; 3. Intake pipe; 4. Exhaust pipe; 5. Centralized pipe; 6. On-off valve; 7. Safety pressure relief valve; 8. Muffler; 9. Pressure display. DETAILED DESCRIPTION
[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0015] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0016] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0017] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0018] See also Figure 1 As shown, this preferred embodiment provides a pressure relief noise control device, including a machine platform 1 and a molding die 2 arranged on the machine platform 1, an air intake pipeline 3 and multiple exhaust pipelines 4 are arranged on the molding die 2, and the multiple exhaust pipelines 4 converge into a centralized pipeline 5, an on-off valve 6 is arranged on the air intake pipeline 3, and each exhaust pipeline 4 is arranged with a safety pressure relief valve 7, and the safety pressure relief valve 7 makes the gas release speed in the centralized pipeline 5 not exceed 20m / s, and a muffler 8 is arranged at the end of the centralized pipeline 5.
[0019] Therefore, the pressure relief noise control device optimizes the intake and exhaust structure of the existing molding mold, especially by setting a safety pressure relief valve 7 on the exhaust pipe 4, controlling the release speed during the air release time to below 20m / s, and cooperating with the muffler 8 to weaken the impact of dynamic noise, thereby effectively suppressing the noise generation.
[0020] Furthermore, a pressure display 9 is provided on each exhaust pipeline 4 and between the molding die 2 and the safety pressure relief valve 7. The pressure display 9 is used to detect and intuitively reflect the exhaust pressure of the molding die 2 so as to adjust the threshold of the safety pressure relief valve 7 accordingly.
[0021] Optionally, the exhaust pipes 4 are distributed on both sides of the molding mold 2, and a centralized pipe 5 is correspondingly arranged on each side of the molding mold 2. The two centralized pipes 5 are interconnected, and pressure is released on both sides at the same time to help release the pressure of the molding mold 2, release gas in a short time, control the gas release speed, and suppress noise.
[0022] Furthermore, the exhaust pipe 4 extends from the side of the molding die 2 and extends upward. After the centralized pipe 5 is connected to the exhaust pipe 4, it is routed above the top of the machine 1, optimizing the arrangement of each pipe and making the appearance of the pressure relief noise control device neat.
[0023] Optionally, the air intake pipeline 3 extends horizontally from the side of the forming mold 2 to reduce pipeline elbows, avoid air intake energy loss and generate dynamic noise.
[0024] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A pressure relief noise control device, comprising a machine platform (1) and a forming mold (2) arranged on the machine platform (1), characterized in that: The molding die (2) is provided with an air intake pipeline (3) and a plurality of exhaust pipelines (4), the plurality of exhaust pipelines (4) converge into a centralized pipeline (5), the air intake pipeline (3) is provided with an on-off valve (6), each exhaust pipeline (4) is provided with a safety pressure relief valve (7), the safety pressure relief valve (7) makes the gas release speed in the centralized pipeline (5) not exceed 20 m / s, and a muffler (8) is provided at the end of the centralized pipeline (5).
2. The pressure relief noise control device according to claim 1, characterized in that: A pressure display instrument (9) is provided on each exhaust pipeline (4) and is located between the molding die (2) and the safety pressure relief valve (7). The pressure display instrument (9) is used to detect and display the exhaust pressure of the molding die (2).
3. The pressure relief noise control device according to claim 1, characterized in that: The exhaust pipelines (4) are distributed on both sides of the molding die (2), and one centralized pipeline (5) is correspondingly arranged on each side of the molding die (2), and the two centralized pipelines (5) are interconnected.
4. The pressure relief noise control device according to claim 3, characterized in that: The exhaust pipeline (4) extends from the side of the molding die (2) and extends upwards, and the centralized pipeline (5) is connected to the exhaust pipeline (4) and then routed above the top of the machine platform (1).
5. The pressure relief noise control device according to claim 1, characterized in that: The air intake pipeline (3) extends horizontally from the side of the forming mold (2).