Silencer for open type throttle valve

Abstract

The invention relates to the field of silencers, in particular to a silencer for an open type throttle valve, a silencer main body is of a multi-layer composite structure, the inner layer is a porous inner plate, and noise generated during operation of the throttle valve can be effectively absorbed in cooperation with a middle sound absorption layer; the sound insulation outer plate on the outer layer further prevents noise from spreading outwards, and a good sound absorption and insulation synergistic effect is achieved. By arranging the avoiding opening, the hand wheel of the throttling valve can penetrate out and be exposed out of the outer side of the shell, direct operation of workers is facilitated, the noise reduction structure does not need to be disassembled or opened, and the problem of sound leakage or noise reduction performance reduction caused by frequent opening and closing of a traditional noise reduction box is solved. The problem that a valve switch is inconvenient to adjust in a noise reduction mode of a common throttle valve is solved.

Description

Technical Field

[0001] This invention relates to the field of silencer technology, and in particular to a silencer for an open throttle valve. Background Technology

[0002] Throttling valves are widely used to regulate the flow and pressure of media. However, during operation, they often generate significant aerodynamic noise due to the high-speed fluid passing through the throttling orifice, affecting the working environment and potentially violating noise emission standards. Currently, the mainstream noise reduction solutions for throttling valves on the market mostly use a noise reduction box to enclose the entire throttling valve, that is, to seal the entire throttling valve in a rigid soundproof enclosure. Open throttling valves include a valve body, a handwheel for operating the valve body, and fluid pipelines connected to the valve body. However, because the operating handle or actuator of the throttling valve is completely sealed, operators must disassemble or open the noise reduction box every time they adjust the valve opening, which is cumbersome and inefficient. During the resealing process, if the seal is not tight or the structure is misaligned, sound leakage can easily occur, significantly weakening the noise reduction effect and even causing the device to malfunction. Especially for open throttling valve scenarios that require frequent adjustments, existing solutions struggle to balance noise reduction performance and ease of operation.

[0003] Therefore, there is an urgent need for a new type of silencer for open throttle valves that can ensure good sound absorption and insulation performance while retaining the convenience and accessibility of valve operation. Summary of the Invention

[0004] To address the issue that conventional throttle valve noise reduction methods are inconvenient for adjusting valve opening and closing.

[0005] This invention provides a silencer for an open throttle valve, comprising a silencer body with a composite structure. The silencer body includes at least a porous inner plate, a sound-absorbing layer, and a sound-insulating outer plate arranged sequentially from the inside to the outside. A silencing cavity is formed inside the silencer body to accommodate the valve body of the open throttle valve. The silencer body is provided with a clearance port, an inlet, and an outlet communicating with the silencing cavity. The clearance port is configured to allow a handwheel to pass through and be exposed to the external operating environment. The inlet and outlet are respectively configured to allow the fluid pipeline of the open throttle valve to pass through and be connected to the valve body of the open throttle valve.

[0006] Preferably, the outline of the muffler body is a stepped or asymmetrical shape that matches the shape of the valve body of the open throttle valve.

[0007] Preferably, a sealing groove is provided around the periphery of the avoidance opening, inlet, and outlet, and a sealing strip is provided in the sealing groove.

[0008] Preferably, the muffler body includes a first enclosure and a second enclosure that are symmetrically distributed. The first enclosure and the second enclosure are semi-shell-shaped structures formed by symmetrically dividing the muffler body along the axis of the clearance port, the liquid inlet and the liquid outlet. Magnets are provided on the edges of the first enclosure and the edges of the second enclosure.

[0009] Preferably, the silencer for the open throttle valve further includes a connecting assembly for connecting the first enclosure and the second enclosure.

[0010] Preferably, the connecting assembly includes connecting ear plates respectively disposed on the outer side of the first enclosure and the outer side of the second enclosure, and fasteners passing through the connecting ear plates.

[0011] Preferably, the perforated inner plate is an aluminum alloy perforated plate or a stainless steel perforated plate.

[0012] Preferably, the sound-absorbing layer is a porous fiber sound-absorbing material layer or a foam sound-absorbing material.

[0013] Preferably, the soundproof outer panel is made of solid steel plate or solid aluminum plate.

[0014] The beneficial effects of this invention are reflected in the fact that the silencer body adopts a multi-layer composite structure, with an inner porous inner plate and a middle sound-absorbing layer, which can effectively absorb the noise generated by the throttle valve during operation; the outer sound-insulating outer plate further blocks the outward transmission of noise, achieving a good synergistic effect of sound absorption and insulation. By setting an avoidance opening, the handwheel of the throttle valve can be passed through and exposed on the outside of the housing, which is convenient for operators to operate directly without disassembling or opening the noise reduction structure, avoiding the sound leakage or noise reduction performance degradation problems caused by frequent opening and closing of traditional noise reduction boxes. It also solves the problem that ordinary throttle valve noise reduction methods are inconvenient for adjusting the valve opening and closing. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the silencer for an open throttle valve provided by the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the silencer for an open throttle valve provided by the present invention.

[0017] In the diagram: 1-Silencer body; 1a-Porous inner plate; 1b-Sound-absorbing layer; 1c-Sound-insulating outer plate; 11-First enclosure; 12-Second enclosure; 13-Magnet; 2-Silencer cavity; 3-Breakout; 4-Inlet; 5-Outlet; 6-Connecting assembly; 61-Connecting lug; 62-Fastener; 7-Open throttle valve; 71-Valve body; 72-Handwheel; 73-Fluid pipeline. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] Example 1: Reference Figures 1-2 A silencer for an open throttle valve 7 includes a silencer body 1 with a composite structure. The silencer body 1 includes at least a porous inner plate 1a, a sound-absorbing layer 1b, and a sound-insulating outer plate 1c arranged sequentially from the inside to the outside. A silencing cavity 2 is formed inside the silencer body 1 to accommodate the valve body 71 of the open throttle valve 7. The silencer body 1 is provided with a clearance port 3, an inlet 4, and an outlet 5 communicating with the silencing cavity 2. The clearance port 3 is configured to allow a handwheel 72 to pass through and be exposed to the external operating environment. The inlet 4 and the outlet 5 are respectively configured to allow a fluid pipeline 73 of the open throttle valve 7 to pass through and be connected to the valve body 71 of the open throttle valve 7.

[0020] The silencer body 1 adopts a multi-layer composite structure. The inner layer is a porous inner plate 1a, which, together with the middle sound-absorbing layer 1b, can effectively absorb the noise generated during the operation of the throttle valve. The outer sound-insulating outer plate 1c further blocks the outward transmission of noise, achieving a good synergistic effect of sound absorption and insulation. By setting an avoidance port 3, the handwheel 72 of the throttle valve can be exposed on the outside of the housing, which is convenient for operators to operate directly without disassembling or opening the noise reduction structure. This avoids the sound leakage or noise reduction performance degradation problems caused by frequent opening and closing of traditional noise reduction boxes. It solves the problem that ordinary throttle valve noise reduction methods are inconvenient for adjusting the valve opening and closing.

[0021] Reference Figure 1 In some embodiments, the outline of the muffler body 1 is a stepped or asymmetrical shape that matches the shape of the valve body 71 of the open throttle valve 7.

[0022] Traditional box-shaped silencers often have a lot of redundant space inside to accommodate valves of various shapes. However, a stepped or asymmetrical silencer body 1 that matches the shape of the valve body 71 can significantly reduce the unnecessary volume of the silencer, allowing it to tightly enclose the valve body 71. This facilitates the installation of a compactly designed silencer in space-constrained piping systems or densely equipped machine rooms.

[0023] In some embodiments, sealing grooves are provided around the periphery of the clearance opening 3, the inlet 4, and the outlet 5, and sealing strips are provided in the sealing grooves.

[0024] The sealing strip is made of elastic materials such as rubber and silicone. The sealing strip is used to fill the tiny gaps between the handwheel 72 and the clearance port 3, the pipe and the inlet 4, the pipe and the outlet 5, etc., forming a sound barrier to block noise from the inside of the anechoic chamber 2 to the outside.

[0025] Reference Figure 2 In some embodiments, the muffler body 1 includes a symmetrically distributed first enclosure 11 and a second enclosure 12. The first enclosure 11 and the second enclosure 12 are semi-shell-shaped structures formed by symmetrically dividing the muffler body 1 along the axis of the clearance port 3, the liquid inlet, and the liquid outlet. (Refer to...) Figure 1 Magnets 13 are provided on the edges of the first enclosure 11 and the second enclosure 12.

[0026] The magnets 13 on the first enclosure 11 and the second enclosure 12 attract each other, enabling the rapid separation and closure of the first enclosure 11 and the second enclosure 12. No tools or bolts are required. Operators can directly open the muffler body 1 to inspect the throttle valve. After the inspection is completed, the muffler body 1 can be closed again, avoiding the cumbersome process of completely disassembling the noise reduction box in the traditional method.

[0027] In some embodiments, the perforated inner plate 1a is an aluminum alloy perforated plate or a stainless steel perforated plate.

[0028] The porous inner plate 1a can guide the airflow in the silencing cavity 2 and initially absorb high noise.

[0029] In some embodiments, the sound-absorbing layer 1b is a porous fiber sound-absorbing material layer or a foam sound-absorbing material.

[0030] The sound-absorbing layer 1b dissipates sound energy through its internal porous structure, efficiently absorbing noise and ensuring that noise within the anechoic chamber 2 is continuously suppressed during operation. The porous fiber sound-absorbing material layer can be one of glass wool, rock wool, polyester fiber sound-absorbing cotton, or ceramic fiber cotton; the foam sound-absorbing material can be one of melamine foam or phenolic foam.

[0031] In some embodiments, the soundproof outer panel 1c is a solid steel plate or a solid aluminum plate.

[0032] The sound insulation outer panel 1c not only protects the porous inner panel 1a and the sound-absorbing layer 1b, but also works synergistically with the porous inner panel 1a and the sound-absorbing layer 1b to achieve a good sound absorption and insulation effect.

[0033] Example 2: Reference Figure 2 The difference between this embodiment and embodiment 1 is that the silencer for the open throttle valve 7 further includes a connecting component 6, which is used to connect the first enclosure 11 and the second enclosure 12.

[0034] Preferably, the connecting component 6 includes connecting ear plates 61 respectively disposed on the outside of the first enclosure portion 11 and the outside of the second enclosure portion 12, and fasteners 62 passing through the connecting ear plates 61.

[0035] The connecting lug 61 ensures precise alignment of the first enclosure 11 and the second enclosure 12 when closed, avoiding sealing problems caused by structural misalignment, and also ensuring the matching degree of the clearance port 3, inlet 4, and outlet 5 with the valve body 71. The cooperation between the connecting lug 61 and the fastener 62 creates a uniform and continuous sealing surface for the muffler body 1 in the closed state. Working in conjunction with the sealing groove and sealing ring, it effectively blocks the noise leakage path and avoids the decrease in noise reduction effect caused by loose connection under vibration environment.

[0036] Example 3: The difference between this embodiment and embodiment 2 is that the connecting component 6 includes a buckle and a slot. One side of the buckle is hinged to the first enclosure 11, and the other side of the buckle is provided with an elastic protrusion. The slot is provided in the second enclosure 12, and a roller is provided above the slot.

[0037] Rotate the buckle until the elastic protrusion contacts the roller, press the buckle firmly, causing the elastic protrusion to drive the roller to rotate. The elastic protrusion then engages with the slot, achieving a stable connection between the first enclosure 11 and the second enclosure 12. No tools or additional fastening are required; it can be operated with one hand, avoiding loosening of the seal and noise leakage caused by vibration or frequent operation.

[0038] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A silencer for an open-type throttle valve, characterized in that: The silencer body includes a composite structure, comprising at least a porous inner plate, a sound-absorbing layer, and a sound-insulating outer plate arranged sequentially from the inside to the outside; a silencing cavity is formed inside the silencer body to accommodate the valve body of an open throttle valve; the silencer body is provided with a clearance port, an inlet, and an outlet communicating with the silencing cavity, the clearance port being configured to allow a handwheel to pass through to be exposed to the external operating environment, and the inlet and outlet being respectively configured to allow the fluid pipeline of the open throttle valve to pass through to connect to the valve body of the open throttle valve.

2. A silencer for an open-type throttle valve according to claim 1, characterized in that: The outline of the muffler body is a stepped or asymmetrical shape that matches the shape of the valve body of the open throttle valve.

3. A silencer for an open-type throttle valve according to claim 1, characterized in that: The periphery of the clearance opening, inlet, and outlet is provided with sealing grooves, and sealing strips are provided in the sealing grooves.

4. A silencer for an open-type throttle valve according to claim 1, characterized in that: The muffler body includes a first enclosure and a second enclosure that are symmetrically distributed. The first enclosure and the second enclosure are semi-shell-shaped structures formed by symmetrically dividing the muffler body along the axis of the clearance port, the liquid inlet and the liquid outlet. Magnets are provided on the edges of the first enclosure and the edges of the second enclosure.

5. A silencer for an open-type throttle valve according to claim 4, characterized in that: It also includes a connecting component for connecting the first enclosure and the second enclosure.

6. A silencer for an open-type throttle valve according to claim 5, characterized in that: The connecting assembly includes connecting lugs respectively disposed on the outer side of the first enclosure and the outer side of the second enclosure, and fasteners passing through the connecting lugs.

7. A silencer for an open-type throttle valve according to claim 1, characterized in that: The perforated inner plate is an aluminum alloy perforated plate or a stainless steel perforated plate.

8. A silencer for an open-type throttle valve according to claim 1, characterized in that: The sound-absorbing layer is a porous fiber sound-absorbing material layer or a foam sound-absorbing material.

9. A silencer for an open-type throttle valve according to claim 1, characterized in that: The soundproof outer panel is made of solid steel plate or solid aluminum plate.

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