A silencer for a secondary water supply system

Abstract

The present invention discloses a silencer for a secondary water supply system. The silencer is a connected segmented assembly structure. From top to bottom, the silencer is provided with a steady flow chamber, a deceleration chamber, a resonance chamber, and a silencer chamber. The upper portion of the steady flow chamber is connected to the water inlet pipe at the rear section of the regulating valve at the water inlet of the secondary water supply equipment via a flange. The lower portion of the steady flow chamber is connected to the outer side of the upper portion of the deceleration chamber via a flange. The lower portion of the deceleration chamber is connected to the outer side of the upper portion of the resonance chamber via a flange. The lower portion of the resonance chamber is connected to the outer side of the upper portion of the silencer via a flange. The lower portion of the silencer chamber is connected to the rear section of the water inlet pipe of the secondary water supply equipment via a flange. The present invention solves the problem that turbulent water flow in the water inlet pipe of the secondary water supply equipment is prone to secondary vibration and abnormal noise pollution. The silencer is simple to operate and easy to maintain and repair.

Description

Technical Field

[0001] The present invention relates to the technical field of silencers for secondary water supply, and in particular to a silencer for a secondary water supply system. Background Art

[0002] The water inlet of common secondary water supply equipment is usually an open-ended pipe fitting for easy connection. Under the influence of the municipal water supply pipe pressure, the water flowing through the municipal water supply pipe and the water inlet fitting of the secondary water supply equipment usually enters the secondary water supply equipment at a certain pressure. Due to the characteristics of open-ended pipe fittings, it is known that water entering the secondary water supply equipment under pressure will cause impact on the secondary water supply equipment. For this reason, people usually install a regulating valve on the water inlet of the open-ended pipe fitting at the secondary water supply equipment.

[0003] However, when a regulating valve is installed at the water inlet of a conventional secondary water supply system, the pressurized water flow can become turbulent under the action of the regulating valve. This turbulent flow is prone to secondary vibrations and abnormal noise within the inlet piping of the secondary water supply system. These secondary vibrations and abnormal noise not only affect the safe operation of the secondary water supply system but also seriously disrupt the normal lives of residents using the secondary water supply system. To address this issue, the present invention provides a silencer for a secondary water supply system. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that water flow in a turbulent state is prone to secondary vibration and abnormal noise pollution in the water inlet pipe of ordinary secondary water supply equipment. The silencer adopts a connected segmented assembly structure and a silencer with a special internal structure size ratio. It can effectively reduce the secondary vibration during the operation of ordinary secondary water supply equipment system, improve the safety of the operation of the secondary water supply equipment system, eliminate the abnormal noise pollution during the operation of the ordinary secondary water supply equipment system, and improve the quality of life of residents using the corresponding secondary water supply equipment. The silencer is simple to operate as a whole and easy to maintain and repair. It is suitable for promotion and use as a silencer matching secondary water supply equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A silencer for a secondary water supply system includes a flow stabilization chamber, a deceleration chamber, a resonance chamber, and a silencer chamber. The silencer is a connected segmented assembly structure. From top to bottom, the flow stabilization chamber, the deceleration chamber, the resonance chamber, and the silencer chamber are sequentially provided. The upper portion of the flow stabilization chamber is connected to the water inlet pipe at the rear section of the regulating valve at the water inlet of the secondary water supply equipment through a flange. The lower portion of the flow stabilization chamber and the outer side of the upper portion of the deceleration chamber are connected through a flange. The lower portion of the deceleration chamber and the outer side of the upper portion of the resonance chamber are connected through a flange. The lower portion of the resonance chamber and the outer side of the upper portion of the silencer chamber are connected through a flange. The lower portion of the silencer chamber is connected to the secondary water supply equipment at the rear section of the water inlet pipe through a flange.

[0007] The flow stabilizing chamber comprises a flow stabilizing outer shell, the upper portion of which is connected to the water inlet pipe of the rear section of the regulating valve at the water inlet of the secondary water supply equipment via a flange, and the lower portion of which is connected to the upper outer side of the deceleration chamber via a flange, and further comprises:

[0008] A capsule-type structure is provided inside the outer shell of the flow stabilizing shell. A pre-filled micro-pressure gas is provided between the outer side of the capsule-type structure and the inner side of the outer shell of the flow stabilizing shell. The capsule-type structure can expand and contract accordingly according to the dynamic changes of the water flow pressure inside the capsule-type structure. The capsule-type structure can effectively reduce the secondary vibration of the turbulent water body in the water inlet pipe of the secondary water supply equipment.

[0009] The upper part of the capsule-type structural member is connected to the upper part of the flow-stabilizing outer shell through a flange, and the lower part of the capsule-type structural member is connected to the upper part of the deceleration chamber through a flange.

[0010] The resonance cavity has a resonance outer shell, in which a resonance tube is arranged. The resonance tube is vertically installed inside the resonance outer shell. The resonance tube can eliminate secondary vibration and abnormal noise pollution of turbulent water in the water inlet pipe of the secondary water supply equipment.

[0011] In order to stably reduce the flow velocity of turbulent water bodies and make full use of the resonance cavity to eliminate the influence of turbulent water bodies on the secondary vibration of the secondary water supply equipment system, preferably, the length of the flow stabilizing cavity accounts for one-fifth of the total length of the silencer, the length of the deceleration cavity accounts for one-fifth of the total length of the silencer, the length of the resonance cavity accounts for two-fifths of the total length of the silencer, the length of the silencer cavity accounts for one-fifth of the total length of the silencer, the length of the flow stabilizing cavity, the deceleration cavity and the silencer cavity are equal, and the length of the flow stabilizing cavity, the deceleration cavity and the silencer cavity is half of the length of the resonance cavity. Such a design can stably reduce the flow velocity of turbulent water bodies and make full use of the resonance cavity to eliminate the influence of turbulent water bodies on the secondary vibration of the secondary water supply equipment system.

[0012] In order to improve the sensitivity of the capsule-type structural component to the change of water flow pressure and partially offset the secondary vibration of the turbulent water flow in the water inlet pipe of the secondary water supply equipment, the upper first section of the silencer is a flow stabilization chamber, and the capsule-type structural component inside the flow stabilization shell in the flow stabilization chamber is a soft lateral sealing membrane layer structural component. Pre-filled micro-pressure gas is provided between the outer side of the soft lateral sealing membrane layer structural component and the inner side of the flow stabilization shell. The pre-filled micro-pressure gas is micro-compressed air or micro-compressed nitrogen. When the water flows through the flow stabilization chamber, a small amount of change in the water flow pressure can cause the soft lateral sealing membrane layer structural component to adapt to the expansion and contraction change, which can ensure that the soft lateral sealing membrane layer structural component is sensitive to the change of water flow pressure. At the same time, the reverse buffering force of the soft lateral sealing membrane layer structural component and the pre-filled micro-pressure gas on the flowing water flow can partially offset the secondary vibration of the turbulent water flow in the water inlet pipe of the secondary water supply equipment.

[0013] The upper part of the soft side sealing membrane layer structure is connected to the upper part of the flow stabilizing shell body through a flange, and the lower part of the soft side sealing membrane layer structure is connected to the upper part of the deceleration chamber through a flange. The flange can ensure that the soft side sealing membrane layer structure is stably installed in the area between the upper part of the deceleration chamber and the inner side of the flow stabilizing shell body.

[0014] In order to reduce the flow rate of turbulent water flow, preferably, a deceleration plate is provided inside the deceleration chamber, and the deceleration plate has dense perforations. The deceleration chamber is the second section of the silencer from top to bottom.

[0015] The dense perforations on the speed brake and the speed brake can fully and effectively reduce the flow rate of turbulent water.

[0016] In order to be able to gradually and steadily reduce the flow rate of the turbulent water flow in stages, and avoid the turbulent water flow from reducing the flow rate too much in a shorter area, which will have a strong impact on the inner wall of the cavity in this area and form a vortex, further, the speed reducer has six layers, and the six layers of speed reducers are evenly installed in the speed reduction cavity. The six layers of speed reducers divide the longitudinal vertical height of the speed reduction cavity into seven parts. The six layers of speed reducers evenly layered in the speed reduction cavity can achieve a gradual and stable reduction in the flow rate of the turbulent water flow in stages, and avoid the turbulent water flow from reducing the flow rate too much in a shorter area, which will have a strong impact on the inner wall of the cavity in this area and form a vortex.

[0017] The distance between two adjacent deceleration plates is one seventh of the longitudinal vertical height of the deceleration chamber.

[0018] The speed reducer is evenly and densely perforated. The evenly distributed dense perforations on the speed reducer can ensure that the turbulent water flows through the speed reducer evenly, which is beneficial to the subsequent processing of the resonance cavity.

[0019] In order to effectively reduce and eliminate abnormal noise pollution caused by turbulent water flow and ensure that the resonance tube has good sensitivity in reducing secondary vibration, preferably, the resonance cavity is the third section of the silencer from top to bottom, the resonance cavity has a resonance outer shell, and the resonance outer shell has a hollow area, and a resonance tube is vertically arranged in the hollow area. An integer greater than one resonance tube is evenly arranged and installed in the hollow area in the resonance outer shell with the center point of the horizontal cross section of the resonance outer shell as the center of the circle. The resonance tube can effectively reduce and eliminate abnormal noise pollution caused by turbulent water flow.

[0020] A circular plate support is provided in the resonant outer shell, and the resonant tube is fixed vertically on the circular plate support. The circular plate support can ensure the overall stability of the resonant tube installed in the hollow area of ​​the resonant outer shell, and the assembly is stable and convenient.

[0021] The wall thickness of the resonance tube is one quarter of the wall thickness of the resonance outer shell. The thinner the wall thickness of the resonance tube, the more sensitive the resonance tube is in reducing secondary vibrations. The thicker the wall thickness of the resonance outer shell, the more stable and firm the overall installation of the resonance cavity.

[0022] In order to reduce the resistance of the water flow in the muffler cavity and make the flow sound smaller when the low-speed water flows through, preferably, the muffler cavity is a cavity structure member, the cavity structure member is hollow inside, and the cavity structure member can reduce the resistance of the water flow in the muffler cavity and make the flow sound smaller when the low-speed water flows through.

[0023] The silencer cavity is the fourth section of the silencer device from top to bottom. The upper outer side of the cavity structure is connected to the lower part of the resonance cavity through a flange, and the lower part of the cavity structure is connected to the secondary water supply equipment at the rear of the water inlet pipe through a flange.

[0024] Compared with the prior art, the present invention provides a silencer for a secondary water supply system having the following beneficial effects:

[0025] The silencer device for the secondary water supply system has a structure that is equipped with a steady flow chamber connected to the water inlet pipe at the rear section of the regulating valve at the water inlet of the secondary water supply equipment, the lower part of the steady flow chamber and the outer side of the upper part of the deceleration chamber are connected by a flange, the lower part of the deceleration chamber and the upper part of the resonance chamber are connected by a flange, the lower part of the resonance chamber and the upper part of the silencer chamber are connected by a flange, and the lower part of the silencer chamber is connected to the secondary water supply equipment at the rear of the water inlet pipe through the flange. The silencer device is composed of a steady flow chamber, a deceleration chamber, a resonance chamber and a silencer chamber that are connected and assembled in sections. At the same time, a capsule-type structural member is provided inside the outer shell of the steady flow chamber, and a pre-filled micro-pressure gas is provided between the outer side of the capsule-type structural member and the inner side of the outer shell of the steady flow chamber. The capsule-type structural member and the pre-filled micro-pressure gas can effectively reduce the secondary vibration of the turbulent water body in the water inlet pipe of the secondary water supply equipment by utilizing the capsule-type structural member and the pre-filled micro-pressure gas.

[0026] A deceleration plate is provided inside the deceleration chamber. The deceleration plate has dense perforations. The matching of the deceleration plate and the deceleration chamber can realize the gradual and stable reduction of the flow velocity of the turbulent water flow in stages, so as to avoid the turbulent water flow from reducing the flow velocity too much in a short area, which will have a strong impact on the inner wall of the chamber in this area and form a vortex.

[0027] The dense and evenly distributed perforations on the speed brake can ensure the uniformity of turbulent water flow through the speed brake, which is beneficial to the subsequent treatment of the resonance cavity;

[0028] The number of speed brakes installed in the speed reduction chamber is an integer greater than one. The specific number of speed brakes installed in the speed reduction chamber can be adjusted according to actual conditions, such as increasing or decreasing the number of speed brakes.

[0029] The resonance cavity has a resonance outer shell, in which a resonance tube is arranged. The resonance tube and the resonance outer shell can eliminate secondary vibration and abnormal noise pollution of turbulent water in the water inlet pipe of the secondary water supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front schematic diagram of an overall vertical longitudinal section of a silencer for a secondary water supply system proposed by the present invention;

[0031] Figure 2 This is a front view of a vertical longitudinal section of the first section of the flow stabilizing cavity in the upper portion of a silencer for a secondary water supply system proposed by the present invention;

[0032] Figure 3 This is a top view of the first section of the flow stabilization cavity on the upper portion of a silencer for a secondary water supply system proposed by the present invention, viewed from top to bottom;

[0033] Figure 4 This is a front schematic diagram of a vertical longitudinal section from top to bottom of the second section of the deceleration chamber in a silencer device for a secondary water supply system proposed by the present invention;

[0034] Figure 5 A schematic top view of the second section of the deceleration chamber from top to bottom in a silencer for a secondary water supply system proposed by the present invention;

[0035] Figure 6 This is a front schematic diagram of a vertical longitudinal section from top to bottom of the third section of the resonance cavity in a silencer for a secondary water supply system proposed by the present invention;

[0036] Figure 7 A schematic top view of the third section of the resonance cavity from top to bottom in a silencer for a secondary water supply system proposed in the present invention, as viewed from top to bottom.

[0037] In the figure: 1. Flow stabilization chamber; 2. Speed ​​reduction chamber; 3. Resonance chamber; 4. Silence chamber; 5. Flow stabilization outer shell; 6. Capsule-type structural component; 7. Speed ​​reduction plate; 8. Dense perforation; 9. Resonance tube; 10. Resonance outer shell; 11. Circular plate support; 12. Flange; 13. Pre-filled micro-pressure gas. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 should not be understood as limiting the present invention.

[0040] The present invention will be further described in detail below with reference to examples and specific implementation methods.

[0041] See the attached figure: A silencer for a secondary water supply system, comprising a steady flow chamber 1, a deceleration chamber 2, a resonance chamber 3 and a silencer chamber 4. The silencer is a connected segmented assembly structure, wherein the steady flow chamber 1, the deceleration chamber 2, the resonance chamber 3 and the silencer chamber 4 are sequentially provided from top to bottom. The upper portion of the steady flow chamber 1 is connected to the water inlet pipe of the rear section of the regulating valve at the water inlet of the secondary water supply equipment through a flange 12. The connection between the lower portion of the steady flow chamber 1 and the outer side of the upper portion of the deceleration chamber 2 is connected through a flange 12. The connection between the lower portion of the deceleration chamber 2 and the outer side of the upper portion of the resonance chamber 3 is connected through a flange 12. The connection between the lower portion of the resonance chamber 3 and the outer side of the upper portion of the silencer chamber 4 is connected through a flange 12. The lower portion of the silencer chamber 4 is connected to the secondary water supply equipment at the rear of the water inlet pipe through a flange 12.

[0042] The flow stabilizing chamber 1 has a flow stabilizing outer shell 5, the upper portion of which is connected to the water inlet pipe of the rear section of the regulating valve at the water inlet of the secondary water supply equipment via a flange 12, and the lower portion of the flow stabilizing outer shell 5 is connected to the outer side of the upper portion of the deceleration chamber 2 via a flange 12, and further includes:

[0043] A capsule-type structural member 6 is provided inside the outer flow-stabilizing shell 5. A pre-filled micro-pressure gas 13 is provided between the outer side of the capsule-type structural member 6 and the inner side of the outer flow-stabilizing shell 5. The capsule-type structural member 6 can expand and contract accordingly according to the dynamic changes in the water flow pressure inside the capsule-type structural member 6. The capsule-type structural member 6 can effectively reduce the secondary vibration of the turbulent water body in the water inlet pipe of the secondary water supply equipment.

[0044] The upper portion of the capsule-type structural member 6 is connected to the upper portion of the flow stabilizing outer shell 5 via a flange 12, and the lower portion of the capsule-type structural member 6 is connected to the upper portion of the deceleration chamber 2 via a flange 12.

[0045] The resonance cavity 3 has a resonance outer shell 10, and a resonance tube 9 is provided inside the resonance outer shell 10. The resonance tube 9 is vertically installed inside the resonance outer shell 10. The resonance tube 9 can eliminate secondary vibration and abnormal noise pollution of turbulent water in the water inlet pipe of the secondary water supply equipment.

[0046] In order to stably reduce the flow velocity of turbulent water bodies and make full use of the resonance chamber 3 to eliminate the influence of turbulent water bodies on the secondary vibration of the secondary water supply equipment system, preferably, the length of the flow stabilizing chamber 1 accounts for one-fifth of the total length of the silencer, the length of the deceleration chamber 2 accounts for one-fifth of the total length of the silencer, the length of the resonance chamber 3 accounts for two-fifths of the total length of the silencer, and the length of the silencer chamber 4 accounts for one-fifth of the total length of the silencer. The length dimensions of the flow stabilizing chamber 1, the deceleration chamber 2 and the silencer chamber 4 are equal, and the length dimensions of the flow stabilizing chamber 1, the deceleration chamber 2 and the silencer chamber 4 are half of the length dimension of the resonance chamber 3. Such a design can stably reduce the flow velocity of turbulent water bodies and make full use of the resonance chamber 3 to eliminate the influence of turbulent water bodies on the secondary vibration of the secondary water supply equipment system.

[0047] In order to improve the sensitivity of the capsule-type structural component 6 to changes in water flow pressure and partially offset the secondary vibration of the turbulent water flow in the water inlet pipe of the secondary water supply equipment, the upper first section of the silencer is a flow stabilizing chamber 1. The capsule-type structural component 6 inside the flow stabilizing outer shell 5 in the flow stabilizing chamber 1 is a soft lateral sealing membrane layer structural component. A pre-filled micro-pressure gas 13 is provided between the outer side of the soft lateral sealing membrane layer structural component and the inner side of the flow stabilizing outer shell 5. The pre-filled micro-pressure gas 13 is micro-compressed air or micro-compressed nitrogen. When the water flows through the flow stabilizing chamber 1, a small change in the water flow pressure can cause the soft lateral sealing membrane layer structural component to adapt to the expansion and contraction changes, which can ensure that the soft lateral sealing membrane layer structural component is sensitive to changes in water flow pressure. At the same time, the reverse buffering force of the soft lateral sealing membrane layer structural component and the pre-filled micro-pressure gas 13 on the flowing water flow can partially offset the secondary vibration of the turbulent water flow in the water inlet pipe of the secondary water supply equipment.

[0048] The upper part of the soft side sealing membrane layer structure is connected to the upper part of the flow stabilizing shell 5 through the flange part 12, and the lower part of the soft side sealing membrane layer structure is connected to the upper part of the deceleration chamber 2 through the flange part 12. The flange part 12 can ensure that the soft side sealing membrane layer structure is stably installed in the area between the upper part of the deceleration chamber 2 and the inner side of the flow stabilizing shell 5.

[0049] In order to reduce the flow rate of turbulent water flow, preferably, a deceleration plate 7 is provided inside the deceleration chamber 2, and dense perforations 8 are provided on the deceleration plate 7. The deceleration chamber 2 is the second section of the silencer from top to bottom.

[0050] The speed reducer 7 and the dense perforations 8 on the speed reducer 7 can fully and effectively reduce the flow rate of the turbulent water flow.

[0051] In order to be able to gradually and steadily reduce the flow rate of the turbulent water flow in stages, and avoid the turbulent water flow from reducing the flow rate too much in a shorter area, which will have a strong impact on the inner wall of the cavity in this area and form a vortex, the deceleration plate 7 has six layers, and the six-layer deceleration plate 7 is evenly installed in the deceleration cavity 2. The six-layer deceleration plate 7 divides the longitudinal vertical height of the deceleration cavity 2 into seven parts. The six-layer deceleration plate 7 with uniform layering inside the deceleration cavity 2 can achieve a gradual and stable reduction in the flow rate of the turbulent water flow in stages, and avoid the turbulent water flow from reducing the flow rate too much in a shorter area, which will have a strong impact on the inner wall of the cavity in this area and form a vortex.

[0052] The distance between two adjacent deceleration plates 7 is one seventh of the longitudinal vertical height of the deceleration chamber 2.

[0053] The speed reducer 7 is evenly provided with dense perforations 8 . The evenly distributed dense perforations 8 on the speed reducer 7 can ensure that the turbulent water flows through the speed reducer 7 evenly, which is beneficial to the subsequent processing of the resonance cavity.

[0054] In order to effectively reduce and eliminate abnormal noise pollution caused by turbulent water flow and ensure that the resonance tube 9 has good sensitivity in reducing secondary vibration, the resonance cavity 3 is the third section of the silencer from top to bottom. The resonance cavity 3 has a resonance outer shell 10. There is a hollow area in the resonance outer shell 10. The resonance tube 9 is vertically arranged in the hollow area. When an integer greater than one is installed, the resonance tubes 9 are evenly arranged and installed in the hollow area in the resonance outer shell 10 with the center point of the horizontal cross section of the resonance outer shell 10 as the center of the circle. The resonance tubes 9 can effectively reduce and eliminate abnormal noise pollution caused by turbulent water flow.

[0055] A circular plate support 11 is provided in the resonance outer shell 10, and the resonance tube 9 is fixed vertically on the circular plate support 11. The circular plate support 11 can ensure the overall stability of the resonance tube 9 installed in the hollow area of ​​the resonance outer shell 10, and the assembly is stable and convenient.

[0056] The wall thickness of the resonance tube 9 is one quarter of the wall thickness of the resonance outer shell 10. The thinner wall thickness of the resonance tube 9 can improve the sensitivity of the resonance tube 9 in reducing secondary vibrations. The thicker wall thickness of the resonance outer shell 10 can ensure that the overall installation of the resonance cavity 3 is stable and firm.

[0057] In order to reduce the resistance of the water flow in the muffler cavity 4 and make the flow sound smaller when the low-speed water flows through, preferably, the muffler cavity 4 is a cavity structure, which is hollow inside. The cavity structure can reduce the resistance of the water flow in the muffler cavity 4 and make the flow sound smaller when the low-speed water flows through.

[0058] The silencer chamber 4 is the fourth section of the silencer device from top to bottom. The upper outer side of the cavity structure is connected to the lower part of the resonance chamber 3 through the flange 12, and the lower part of the cavity structure is connected to the secondary water supply equipment at the rear of the water inlet pipe through the flange 12.

[0059] The present invention solves the problem that water in a turbulent state is prone to secondary vibration and abnormal noise pollution in the water inlet pipe of ordinary secondary water supply equipment. The silencer adopts a connected segmented assembly structure and a silencer with special internal structure size ratios, which can effectively reduce the secondary vibration of ordinary secondary water supply equipment system during operation, improve the safety of secondary water supply equipment system operation, eliminate abnormal noise pollution during operation of ordinary secondary water supply equipment system, and improve the quality of life of residents using corresponding secondary water supply equipment. The silencer is simple to operate as a whole and easy to maintain and repair, and is suitable for promotion and use as a silencer matching secondary water supply equipment.

[0060] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A silencer for a secondary water supply system, characterized in that: The silencing device comprises a flow stabilizing chamber, a deceleration chamber, a resonance chamber and a silencer chamber. The silencing device is a connected segmented assembly structure. The flow stabilizing chamber, the deceleration chamber, the resonance chamber and the silencer chamber are sequentially provided from top to bottom. The upper portion of the flow stabilizing chamber is connected to the water inlet pipe of the rear section of the regulating valve at the water inlet of the secondary water supply equipment through a flange. The connection between the lower portion of the flow stabilizing chamber and the outer side of the upper portion of the deceleration chamber is connected through a flange. The connection between the lower portion of the deceleration chamber and the outer side of the upper portion of the resonance chamber is connected through a flange. The connection between the lower portion of the resonance chamber and the outer side of the upper portion of the silencer chamber is connected through a flange. The lower portion of the silencer chamber is connected to the secondary water supply equipment at the rear of the water inlet pipe through a flange. The flow stabilizing chamber comprises a flow stabilizing outer shell, the upper portion of which is connected to the water inlet pipe of the rear section of the regulating valve at the water inlet of the secondary water supply equipment via a flange, and the lower portion of which is connected to the upper outer side of the deceleration chamber via a flange, and further comprises: A capsule-type structure is provided inside the outer shell of the flow stabilizing shell. A pre-filled micro-pressure gas is provided between the outer side of the capsule-type structure and the inner side of the outer shell of the flow stabilizing shell. The capsule-type structure can expand and contract accordingly according to the dynamic changes of the water flow pressure inside the capsule-type structure. The upper part of the capsule-type structural member is connected to the upper part of the flow-stabilizing outer shell through a flange, and the lower part of the capsule-type structural member is connected to the upper part of the deceleration chamber through a flange. The resonance cavity has a resonance outer shell, a resonance tube is provided in the resonance outer shell, and the resonance tube is vertically installed inside the resonance outer shell; The first section of the upper part of the muffler is a flow stabilization chamber, and the capsule-type structural component inside the flow stabilization outer shell of the flow stabilization chamber is a soft lateral sealing membrane structural component. A pre-filled micro-pressure gas is provided between the outside of the soft side sealing membrane structure and the inside of the flow stabilizing shell. The pre-filled micro-pressure gas is micro-compressed air or micro-compressed nitrogen. The upper part of the soft lateral sealing membrane structure is connected to the upper part of the flow stabilizing shell through a flange, and the lower part of the soft lateral sealing membrane structure is connected to the upper part of the deceleration chamber through a flange.

2. The silencing device for a secondary water supply system according to claim 1 is characterized in that: The length of the stabilizing flow chamber accounts for one fifth of the total length of the silencer, the length of the deceleration chamber accounts for one fifth of the total length of the silencer, the length of the resonance chamber accounts for two fifths of the total length of the silencer, and the length of the silencer chamber accounts for one fifth of the total length of the silencer.

3. The silencing device for a secondary water supply system according to claim 1 is characterized in that: A deceleration plate is provided inside the deceleration chamber, and the deceleration plate has dense perforations. The deceleration chamber is the second section of the silencer from top to bottom.

4. The silencing device for a secondary water supply system according to claim 3 is characterized in that: The deceleration plate has six layers, and the six layers of deceleration plates are evenly installed in the deceleration cavity. The six layers of deceleration plates divide the longitudinal vertical height of the deceleration cavity into seven parts. The distance between two adjacent deceleration plates is one seventh of the longitudinal vertical height of the deceleration chamber. The deceleration plate is evenly and densely perforated.

5. The silencing device for a secondary water supply system according to claim 1 is characterized in that: The resonance cavity is the third section of the muffler from top to bottom. The resonance cavity has a resonance outer shell. The resonance outer shell has a hollow area. A resonance tube is vertically arranged in the hollow area. A circular plate support is provided inside the resonant outer shell, and the resonant tube is fixed vertically on the circular plate support. The wall thickness of the resonance tube is one quarter of the wall thickness of the resonance outer shell.

6. The silencing device for a secondary water supply system according to claim 1 is characterized in that: The silencer cavity is a hollow structural component, which is hollow inside. The silencer cavity is the fourth section of the silencer device from top to bottom. The upper outer side of the cavity structural component is connected to the lower part of the resonance cavity through a flange component, and the lower part of the cavity structural component is connected to the secondary water supply equipment at the rear of the water inlet pipe through a flange component.

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