Locking mechanism for an array silencer movable silencing sheet group

Abstract

A locking mechanism for the movable silencer plate assembly of an array-type silencer ensures that the maintenance access door installed on the array-type silencer remains in the designed position when returned to the closed position, effectively supporting the steel structure of the silencer and extending its service life. The mechanism includes a latch, fastening screws, and a pad. After maintenance personnel open the access door to perform maintenance or repairs, they can return the door to its original position and secure the movable steel bracket to the fixed steel bracket. This prevents the movable silencer plate assembly connected to the movable steel bracket from shifting due to excessive airflow in the duct, ensuring the silencer's effectiveness. Simultaneously, it transfers a portion of the weight of the movable silencer plate assembly to the fixed steel bracket, reducing the load on the access door and further extending its service life.

Description

Technical Field

[0001] This utility model relates to an array-type silencer, and more particularly to a locking mechanism for a movable silencer plate assembly. Background Technology

[0002] Array silencers are now widely used in ventilation and air conditioning systems, typically in large-area civil engineering ducts and ventilation rooms. They cover the entire duct cross-section. When construction or maintenance work is required, personnel need to pass through the array silencer to enter the duct (or room) to perform their work. Therefore, to facilitate passage through the silencer, at least one set of silencers needs to be made into a movable array (hereinafter referred to as a movable silencer set). Typically, a movable silencer set includes a vertically oriented movable steel member and two or three silencers installed on the vertical steel member and perpendicular to it. The vertical steel member is connected to a movable door and adjacent vertically fixed steel members by hinges to form a whole. The movable silencer set is moved by pushing and pulling the movable door.

[0003] Before passing through the array-type silencer, pull the movable silencer plate group towards the entrance end of the silencer or push it towards the exit end of the silencer to create a space wide enough for personnel to pass through. When personnel return to the outside of the array-type silencer after completing their work, move the movable silencer plate group back to its original installation position and fix it in place to ensure that the silencing effect meets the design requirements.

[0004] In existing technology, the movement of the movable silencer assembly is accomplished through a movable maintenance door. The typical structure is as follows: the movable silencer assembly is first fixed to a vertically oriented, movable steel member. This movable steel member is then connected via a hinge plate to one vertical side of a rectangular door frame (hereinafter referred to as the maintenance door) made of steel supports. The other vertical side of this rectangular door frame is fixed via a hinge plate to another vertically oriented support steel member used to support the array-type silencer. The movable silencer assembly (i.e., a row of silencer panels that can be moved when personnel need to pass through the array-type silencer) rests on the support steel member through the movable door. The movable door can be pulled towards the silencer's inlet end or pushed towards the silencer's outlet end, thereby opening or closing the movable door (a movable door is provided at both the inlet and outlet ends of the silencer).

[0005] This structure has the following shortcomings:

[0006] 1) Array-type silencers rely on the fixed row and column spacing of their internal sound-absorbing plates to ensure noise reduction. Under normal circumstances, all internal sound-absorbing plates should be fixed in their designed positions according to the designed row and column spacing. The movable sound-absorbing plate group is only connected to the movable door via a hinge plate and is not connected and fixed to other supporting steel components of the array-type silencer. When the environment in which the array-type silencer is located is subject to large airflow fluctuations, the movable sound-absorbing plate group may automatically deviate from its designed position under the action of wind, potentially causing a deterioration in the noise reduction effect.

[0007] 2) Since the movable sound-absorbing plate assembly is connected to the movable door through the hinge plate, the movable door bears a large weight from the movable sound-absorbing plate assembly. Long-term load-bearing will cause the hinge plate to deform, thus greatly shortening the service life of the movable door. Summary of the Invention

[0008] The technical problem to be solved by this utility model is to provide a locking mechanism for the movable silencing plate group of an array-type muffler. This locking mechanism can ensure that the maintenance movable door installed on the array-type muffler is kept in the position specified by the design requirements when it returns to the closed position and can become a steel component that effectively supports the array-type muffler. It can also effectively improve the service life of the maintenance movable door.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] The locking mechanism of the array-type muffler movable diaphragm group of this utility model includes a steel buckle plate and a fastening screw that is screwed onto the buckle plate and can pass through the buckle plate. Its characteristic is that a steel pad is fixed to the inner end of the fastening screw. The buckle plate is sleeved on a vertically arranged movable steel bracket in the muffler and can move up and down along the movable steel bracket. When the buckle plate is moved up or down to the fastening position, the fastening screw is tightened inward. The space enclosed by the buckle plate and the pad is sufficient to fix the movable steel bracket and the fixed steel bracket together. The fastening position is a position that covers the end of the movable steel bracket and the end of the fixed steel bracket, which is vertically opposite to the movable steel bracket and is arranged in the muffler.

[0011] The vertical projection shape of the buckle is circular, rectangular, or square.

[0012] A vertical notch is provided on the side of the buckle plate opposite to the fastening screw. The width of the vertical notch is smaller than the outer diameter of the movable steel bracket or smaller than the side length of the movable steel bracket opposite to the vertical notch.

[0013] The outer end of the fastening screw is a regular polygon.

[0014] A manual handle is provided at the outer end of the fastening screw.

[0015] The locking mechanism is also equipped with a support plate that can receive the buckle plate after the fastening force is released between the buckle plate and the pad plate. The support plate is fixed to the movable steel bracket or the fixed steel bracket and is located below the fastening position.

[0016] Compared with existing technologies, the locking mechanism of the movable silencer plate assembly in this utility model can fix the movable steel bracket of the maintenance door to the fixed steel bracket supporting the array silencer. This allows maintenance personnel to open the maintenance door for maintenance or repair, and then return the door to its original position, fixing the movable steel bracket to the fixed steel bracket. This prevents the movable silencer plate assembly connected to the movable steel bracket from shifting due to excessive airflow in the duct, ensuring the silencer's effectiveness. Because a portion of the weight of the movable silencer plate assembly is distributed to the fixed steel bracket above it through the locking mechanism after the maintenance door is locked to the upper bracket, the weight borne by the maintenance door is reduced, thus extending its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram showing the maintenance access door on an array-type muffler being locked.

[0018] Figure 2 This is a schematic diagram of the locking mechanism of this utility model.

[0019] Figure 3 This is an enlarged schematic diagram of the locking mechanism that is fitted onto the movable steel bracket.

[0020] Figure 4 This is an enlarged schematic diagram of the locking mechanism that is fitted onto the fastening position.

[0021] Figure 5 for Figure 1 An enlarged schematic diagram of part A in the middle.

[0022] The attached figures are labeled as follows:

[0023] Array-type silencer 1, silencer plate 11, maintenance access door 2, vertical frame 21, movable steel bracket 22, movable silencer plate group 23, fixed steel bracket 3, locking mechanism 4, buckle plate 41, notch 42, fastening screw 43, manual handle 44, pad 5, hinge plate 6. Detailed Implementation

[0024] like Figure 1 , Figure 2 , Figure 5As shown, the locking mechanism 4 of the movable silencing plate group 23 of the array-type muffler 1 of this utility model is used on the maintenance movable door 2 of the array-type muffler 1. It consists of a steel buckle plate 41, a fastening screw 43 screwed on the buckle plate 41 and penetrating the thickness of the buckle plate 41, and a steel pad 5 fixedly installed at the inner end of the fastening screw 43. Tightening the fastening screw 43 can change the size of the space enclosed by the buckle plate 41 and the pad 5.

[0025] The maintenance access door 2 consists of four steel door frames, namely two horizontal frames and two vertical frames 21 (the two vertical frames 21 are divided into fixed sides and movable sides). The fixed side vertical frame 21 is mounted on a vertically arranged and fixed support steel member through a hinge plate 6. The movable side vertical frame 21 is connected to a movable steel bracket 22 that can be moved away from the other fixed support steel member through a hinge plate 6. Multiple sound-absorbing plates 11 (hereinafter referred to as movable sound-absorbing plate group 23) are provided on the movable steel bracket 22. The sound-absorbing plates 11 are perpendicular to the movable steel bracket 22.

[0026] The movable steel bracket 22 has the same cross-sectional shape as the supporting steel component.

[0027] 1. Buckle panel 41

[0028] The vertical projection shape of the buckle plate 41 is circular, rectangular or square, and its specific shape is basically the same as the cross-sectional shape of the supporting steel component of the muffler (hereinafter also referred to as the fixed steel bracket 3).

[0029] A vertical notch 42 is provided on the side of the buckle plate 41 opposite to the fastening screw 43. The width of the vertical notch 42 is less than the outer diameter of the movable steel bracket 22 or less than the side length of the movable steel bracket 22 opposite to the vertical notch 42.

[0030] The preferred cross-sectional shape of the buckle plate 41 of this utility model is as follows: The steel component is of the type, and the corresponding cross-sectional shape of the fixed steel bracket 3 is square. The fastening screw 43 is installed on the side plate opposite to the notch 42 on the buckle plate 41.

[0031] The buckle plate 41 is sleeved on the movable steel bracket 22 and can move up and down along the movable steel bracket 22. When the operator needs to close the maintenance door 2 after exiting the silencer, that is, to return it to the initial design position, the locking mechanism 4 of this utility model can fix the movable steel bracket 22 to the corresponding fixed steel bracket 3. In this way, the movable silencer plate assembly 23 can be stabilized in the original design position, and part of the load of the movable silencer plate assembly 23 can be transferred to the fixed steel bracket 3 to which it is fixed, thereby effectively extending the service life of the maintenance door 2. The specific operation is as follows:

[0032] When the buckle plate 41 is moved up or down to a position where it can cover the opposite end of the movable steel bracket 22 and the fixed steel bracket 3 (hereinafter referred to as the fastening position), the fastening screw 43 is tightened inward. The space enclosed by the buckle plate 41 and the pad 5 is sufficient to fix the movable steel bracket 22 and the fixed steel bracket 3 together (see...). Figure 3 As shown in the figure, this operation can be regarded as connecting the movable steel bracket 22 and the fixed steel bracket 3 into a single structure.

[0033] 2. Pad 5

[0034] The steel pad 5 is welded to the inner end of the fastening screw 43. Its shape varies with the cross-sectional shape of the movable steel bracket 22. When the cross-sectional shape of the movable steel bracket 22 is circular, the shape of the pad 5 is arc-shaped; when the cross-sectional shape of the movable steel bracket 22 is rectangular, the shape of the pad 5 is flat.

[0035] 3. Fastening screw 43

[0036] The outer end of the fastening screw 43 is a regular polygon to facilitate the use of special tools to tighten the fastening screw 43.

[0037] Preferably, a manual handle 44 is provided at the outer end of the fastening screw 43. The manual handle 44 is a plum blossom knob or a butterfly handle.

[0038] 4. Pallet (not shown in the diagram)

[0039] The locking mechanism 4 also includes a support plate for receiving the buckle plate 41, which is mounted on the movable steel bracket 22 or the fixed steel bracket 3 and located below the fastening position (see [link]). Figure 4 As shown in the figure, its function is to prevent the buckle plate 41 from being lost after the fastening force is released between the buckle plate 41 and the pad plate 5 (that is, after the locking mechanism 4 is unlocked).

Claims

1. A locking mechanism for a movable muffler plate assembly in an array type muffler, comprising a steel buckle plate (41) and a fastening screw (43) screwed onto the buckle plate (41) and passing through the buckle plate (41), characterized in that... A steel pad (5) is fixed to the inner end of the fastening screw (43). The buckle plate (41) is sleeved on the vertically arranged movable steel bracket (22) in the muffler and can move up and down along the movable steel bracket (22). When the buckle plate (41) is moved up or down to the fastening position, the fastening screw (43) is tightened inward. The space enclosed by the buckle plate (41) and the pad (5) is sufficient to fix the movable steel bracket (22) and the fixed steel bracket (3) together. The fastening position is the position that can cover the end of the movable steel bracket (22) and the end of the fixed steel bracket (3) that is vertically opposite to the movable steel bracket (22) and is set in the muffler.

2. The locking mechanism for the movable silencing plate assembly of the array-type muffler according to claim 1, characterized in that: The vertical projection shape of the buckle (41) is circular, rectangular or square.

3. The locking mechanism for the movable silencing plate assembly of the array-type muffler according to claim 2, characterized in that: A vertical notch (42) is provided on the side of the buckle plate (41) opposite to the fastening screw (43). The width of the vertical notch (42) is smaller than the outer diameter of the movable steel bracket (22) or smaller than the side length of the movable steel bracket (22) opposite to the vertical notch (42).

4. The locking mechanism for the movable silencing plate assembly of the array-type muffler according to claim 3, characterized in that: The outer end of the fastening screw (43) is a regular polygon.

5. The locking mechanism for the movable silencing plate group of the array-type muffler according to claim 4, characterized in that: A manual handle (44) is provided at the outer end of the fastening screw (43).

6. The locking mechanism for the movable silencing plate group of the array-type muffler according to claim 5, characterized in that: The locking mechanism (4) is also equipped with a support plate that can receive the buckle plate (41) after the fastening force is released between the buckle plate (41) and the pad plate (5). The support plate is fixed to the movable steel bracket (22) or the fixed steel bracket (3) and is located below the fastening position.

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