Conveyor opening noise reduction device

Abstract

The utility model provides a conveyor opening noise reduction device, and belongs to the technical field of noise reduction equipment. The noise elimination device is arranged at a hole, allowing a conveyor to pass through, of a sound insulation cover and comprises a sound absorption and insulation shell, two passing openings allowing the conveyor to pass through are formed in the sound absorption and insulation shell in a penetrating mode, and a noise elimination cavity is formed in the sound absorption and insulation shell and located between the two passing openings. Sound insulation doors used for opening and closing the passing openings are rotationally connected to the positions, located at the two passing openings, of the sound absorption and insulation shell correspondingly, and execution assemblies used for opening and closing the sound insulation doors of the two silencing cavities correspondingly are arranged on the sound absorption and insulation shell. The sound absorption and insulation shell is installed at the hole of the sound insulation cover, the sound absorption and insulation shell and the two sound insulation doors form the silencing cavity after the sound insulation doors on the sound absorption and insulation shell are closed, the sound insulation doors are opened to send out articles when the articles are conveyed into the conveyor, and the silencing effect at the hole is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction equipment, in particular to a noise reduction device for a conveyor opening. Background Art

[0002] The commonly used technical measures in noise control are sound absorption, sound insulation, sound elimination and vibration reduction, and the corresponding equipment are sound absorbers, sound insulation panels, silencers and vibration dampers. The acoustic system consists of a sound source, a sound propagation path and a receiver. The sound is emitted by the sound source and reaches the receiver's ear through a certain propagation medium or path. Noise control can be achieved by taking measures from three parts: the noise source, the propagation path and the receiver. The soundproof cover is a technical measure commonly used in noise control engineering practice to control noise on the propagation path. Its main function is to place the noise source equipment in the soundproof cover, and use noise reduction products such as sound insulation panels, sound insulation doors and windows, and silencers to reduce the transmission of equipment noise to the outside of the cover to reduce environmental noise.

[0003] When adopting the soundproof enclosure measure for the noise source equipment equipped with a conveyor, it is necessary to reserve an unclosable hole in the soundproof enclosure for the conveyor to transmit materials. The equipment noise will be transmitted to the outside of the soundproof enclosure through the hole, seriously affecting the noise reduction effect of the soundproof enclosure.

[0004] Because the conveyor in the hole is moving and often needs to pass large materials, the hole cannot be closed to meet process requirements. At present, it is difficult to effectively control the noise inside the cover from propagating outward without taking noise reduction measures or installing soft curtains at the hole. Utility Model Content

[0005] In view of the above problems, the utility model provides a conveyor opening noise reduction device.

[0006] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0007] Provided is a conveyor opening noise reduction device, which is arranged at an opening of a soundproof cover for a conveyor to pass through, and comprises a sound-absorbing and insulating shell, two through openings for the conveyor to pass through are penetrated on the sound-absorbing and insulating shell, a sound-absorbing and insulating cavity is formed between the two through openings in the sound-absorbing and insulating shell, sound-absorbing and insulating shell are respectively rotatably connected at the two through openings with sound-insulating doors for opening and closing the through openings, and an actuator assembly of the sound-absorbing and insulating shell for respectively opening and closing the two sound-absorbing and insulating cavities is arranged with the sound-absorbing and insulating shell.

[0008] Furthermore, the actuator assembly includes a piston cylinder, which is rotatably connected to the sound-absorbing and insulating shell, a connecting rod is fixedly connected to the sound-insulating door, a piston rod of the piston cylinder is rotatably connected to the connecting rod, and the piston cylinder is used to drive the sound-insulating door to open the opening to the outside of the temporary storage cavity.

[0009] Furthermore, a middle silencer unit is fixedly installed between the two layers of conveyor belts in the conveyor, the middle silencer unit overlaps with the sound-absorbing and insulating shell, the middle silencer unit is a cubic structure composed of multiple silencer plates, and the top and bottom of the middle silencer unit are respectively close to the two layers of conveyor belts in the conveyor.

[0010] Furthermore, a first sensor and a second sensor are spaced apart on both sides of the sound-absorbing and insulating shell on the conveyor. The first sensor and the second sensor are sequentially arranged along the conveying direction of the conveyor. When the first sensor detects that an object on the conveyor passes, the sound insulation door opens. When the second sensor detects that an object on the conveyor passes, the sound insulation door closes.

[0011] Furthermore, it also includes a third sensor, which is arranged on the conveyor belt and located in the sound-absorbing cavity. When the first sensor detects that an object passes through, the sound insulation door close to the upstream of the conveyor belt opens. When the third sensor detects that an object passes through, the sound insulation doors on both sides of the sound-absorbing and sound-insulating shell along the conveying direction of the conveyor belt are closed and opened in sequence. When the second sensor detects that an object passes through, the sound insulation door close to the downstream of the conveyor belt is closed.

[0012] Furthermore, the sound-absorbing and insulating shell and the sound-insulating door are both composed of an external sound insulation board, a sound-absorbing material and an internal faceplate. The internal faceplate faces the inside of the sound insulation cover, and the sound-absorbing material is any one of glass wool, melamine foam and polyurethane foam.

[0013] The beneficial effects of the utility model are as follows: a sound absorbing and insulating shell is installed at the hole of the soundproof cover, and after the sound insulation door on the sound absorbing and insulating shell is closed, the sound absorbing and insulating shell and the two sound insulation doors form a sound-absorbing cavity, and when objects are fed into the conveyor, the sound insulation door is opened for the objects to be fed out, thereby improving the sound insulation effect at the hole position. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of the noise reduction device of Example 1 of the present application.

[0015] Figure 2 This is a schematic diagram of a top view and cross-sectional state of the noise reduction device of Example 1 of the present application.

[0016] Figure 3 This is a schematic diagram of a side cross-sectional state of the noise reduction device of Example 1 of the present application.

[0017] Figure 4 This is a schematic diagram of the front view and cross-section of the noise reduction device of Example 1 of the present application.

[0018] Among them, 1. soundproof cover; 2. conveyor; 3. sound-absorbing and soundproofing shell; 31. through port; 32. sound-absorbing cavity; 4. soundproof door; 5. piston cylinder; 6. middle sound-absorbing unit; 71. first sensor; 72. second sensor. DETAILED DESCRIPTION

[0019] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Example 1

[0021] The present application embodiment discloses a conveyor opening noise reduction device, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 The noise reduction device is installed at the hole of the soundproof enclosure 1 for the conveyor 2 to pass through, and includes a sound-absorbing and insulating shell 3. The sound-absorbing and insulating shell 3 is in a cubic shape, hollow inside, fixed and filled at the hole of the soundproof enclosure 1, and two through-holes 31 are also formed through the sound-absorbing and insulating shell 3, and the inside and outside of the soundproof enclosure 1 are connected through the through-holes 31. The conveyor 2 passes through the through-holes 31, and the conveyor 2 can be any one of a belt conveyor 2, a chain plate conveyor 2 or a roller conveyor 2. In the embodiment of the present application, the conveyor 2 takes a belt conveyor 2 as an example, and the conveyor 2 passes close to the lower part of the through-hole 31. There is a space for the transported items to pass between the belt of the conveyor 2 and the upper edge of the through-hole 31.

[0022] The space above the conveyor 2 in the two through openings 31 on the sound-absorbing and insulating shell 3 is equipped with a sound-insulating door 4 for closing the sound-insulating door 4, which is hinged to the edge of the through opening 31. A sound-absorbing and insulating shell 3 is formed between the two through openings 31 to form a sound-absorbing and insulating cavity 32. The sound-absorbing and insulating shell 3 is provided with an actuator of the sound-insulating door 4 for opening and closing the two sound-absorbing and insulating cavities 32 respectively. In the embodiment of the present application, two sound-insulating doors 4 are provided in each through opening 31, and the two sound-insulating doors 4 are hinged on the vertical edges on both sides of the through opening 31 in a split-type manner. In other embodiments, the sound-insulating door 4 can also be a single leaf hinged to the upper edge of the through opening 31.

[0023] In the embodiment of the present application, the actuator can be a piston cylinder 5, which can be any one of a pneumatic cylinder, a hydraulic cylinder, an electric cylinder, or other linear telescopic mechanisms. The cylinder body of the piston cylinder 5 is hinged on the sound-absorbing and insulating shell 3, a connecting rod is fixedly connected to the sound-insulating door 4, the piston rod of the piston cylinder 5 is hinged to the connecting rod, and the hinge axes at both ends of the piston cylinder 5 are parallel to the hinge axes of the sound-insulating door 4. The sound-insulating door 4 can be opened to the outside of the sound-absorbing and insulating cavity 32 through the actuator.

[0024] During the process of conveying articles into the soundproof enclosure 1, the soundproof door 4 is opened by the actuator. After the articles enter the soundproof enclosure 1 through the conveyor 2, the soundproof door 4 is closed by the actuator. The soundproof cavity 32 formed by the soundproof shell 3 and the soundproof door can effectively reduce the noise passing outward.

[0025] Furthermore, a middle silencer unit 6 is fixedly arranged between the two layers of conveyor belts in the conveyor 2, the middle silencer unit 6 overlaps with the sound-absorbing and insulating shell 3, and the middle silencer unit 6 is a cubic structure composed of a plurality of silencer plates, and the top and bottom of the middle silencer unit 6 are respectively attached to the two layers of conveyor belts in the conveyor 2. When a roller conveyor 2 is used, the bottom of the middle silencer unit 6 is in close contact with the bottom of the conveyor 2. Through the middle silencer unit 6, the portion of the through port 31 occupied by the conveyor belt can be properly noise-reduced, thereby improving the overall noise reduction effect.

[0026] In the embodiment of the present application, the sound-absorbing and insulating shell 3, the sound-insulating door 4 and the middle sound-absorbing unit 6 all adopt the same structure, and are all composed of an external sound-insulating board, a sound-absorbing material and an internal face shield panel. The internal face shield panel faces the inside of the soundproof cover 1, and the sound-absorbing material is any one of glass wool, melamine foam and polyurethane foam. The sound-insulating board can be made of a material with good sound insulation performance such as a metal plate and a cement board, and the face shield panel can be made of a metal punching plate, a mesh plate and a wire mesh.

[0027] Furthermore, in order to realize the automatic opening of the soundproof door 4, in the embodiment of the present application, the first sensor 71 and the second sensor 72 are sequentially installed on both sides of the sound-absorbing and insulating shell 3 on the conveyor 2 along the conveying direction of the conveyor 2. It also includes a controller, which can be a computer, and the first sensor 71 and the second sensor 72 can both be photoelectric sensors. The first sensor 71, the second sensor 72, and the pneumatic system / hydraulic system that controls the action of the piston cylinder 5 are all electrically connected to the controller. When the first sensor 71 detects that an object on the conveyor 2 passes, the controller controls the piston cylinder 5 near the upstream of the conveyor 2 to move to open the soundproof door 4 upstream of the sound-absorbing and insulating shell 3. When the second sensor 72 detects that an object on the conveyor 2 passes, the piston cylinder 5 near the downstream of the conveyor 2 moves to close the soundproof door 4 downstream of the sound-absorbing and insulating shell 3. When no object is conveyed on the conveyor 2, the soundproof door 4 on the sound-absorbing and insulating shell 3 is promptly controlled to be closed, so as to achieve the purpose of noise reduction.

[0028] Example 2

[0029] The difference between Example 2 and Example 1 is that a third sensor is provided.

[0030] The third sensor is installed on the conveyor belt and located in the silencing cavity 32, and the third sensor is electrically connected to the controller. In the embodiment of the present application, when the first sensor 71 detects that an object has passed, the sound insulation door 4 near the upstream of the conveyor belt is opened, when the third sensor detects that an object has passed, the sound insulation doors 4 on both sides of the sound insulation shell 3 along the conveying direction of the conveyor belt are closed and opened in sequence, and when the second sensor 72 detects that an object has passed, the sound insulation door 4 near the downstream of the conveyor belt is closed.

[0031] In the embodiment of the present application, the muffler cavity 32 is used to temporarily store the articles on the conveyor 2. During the conveying process of the articles on the conveyor 2, only one of the soundproof doors 4 on both sides of the sound-absorbing and insulating shell 3 is opened at the same time, and one soundproof door 4 is kept closed, thereby further improving the muffler effect.

[0032] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A conveyor opening noise reduction device, arranged at the opening of a soundproof enclosure (1) through which a conveyor (2) passes, Features: The invention comprises a sound absorbing and isolating shell (3), wherein two through-holes (31) for a conveyor (2) to pass through are formed through the sound absorbing and isolating shell (3), a sound-absorbing and isolating cavity (32) is formed between the two through-holes (31) in the sound absorbing and isolating shell (3), sound-absorbing and isolating doors (4) for opening and closing the through-holes (31) are rotatably connected to the two through-holes (31) on the sound absorbing and isolating shell (3), and an actuator assembly of the sound-absorbing and isolating door (4) for opening and closing the two sound-absorbing and isolating cavities (32) is provided on the sound absorbing and isolating shell (3).

2. A conveyor opening noise reduction device according to claim 1, It is characterized in that The actuator assembly comprises a piston cylinder (5), the piston cylinder (5) is rotatably connected to the sound-absorbing and insulating shell (3), a connecting rod is fixedly connected to the sound-insulating door (4), the piston rod of the piston cylinder (5) is rotatably connected to the connecting rod, and the piston cylinder (5) is used to drive the sound-insulating door (4) to open the opening (31) toward the outside of the temporary storage chamber.

3. A conveyor opening noise reduction device according to claim 1, It is characterized in that A middle silencer unit (6) is fixedly arranged between two layers of conveyor belts in the conveyor (2); the middle silencer unit (6) overlaps with the sound-absorbing and insulating shell (3); the middle silencer unit (6) is a cubic structure composed of a plurality of silencer plates; the top and bottom of the middle silencer unit (6) are respectively close to the two layers of conveyor belts in the conveyor (2).

4. A conveyor opening noise reduction device according to claim 2, It is characterized in that A first sensor (71) and a second sensor (72) are arranged at intervals on both sides of the sound-absorbing and isolating shell (3) on the conveyor (2); the first sensor (71) and the second sensor (72) are arranged in sequence along the conveying direction of the conveyor (2); when the first sensor (71) detects that an object on the conveyor (2) passes, the sound-isolating door (4) opens; when the second sensor (72) detects that an object on the conveyor (2) passes, the sound-isolating door (4) closes.

5. A conveyor opening noise reduction device according to claim 4, It is characterized in that The invention also comprises a third sensor, which is arranged on the conveyor belt and located in the sound-absorbing cavity (32); when the first sensor (71) detects that an object has passed, the sound insulation door (4) close to the upstream of the conveyor belt is opened; when the third sensor detects that an object has passed, the sound insulation doors (4) on both sides of the sound-absorbing and insulating shell (3) along the conveying direction of the conveyor belt are closed and opened in sequence; when the second sensor (72) detects that an object has passed, the sound insulation door (4) close to the downstream of the conveyor belt is closed.

6. A conveyor opening noise reduction device according to any one of claims 1 to 5, It is characterized in that The sound-absorbing and insulating outer shell (3) and the sound-insulating door (4) are both composed of an external sound-insulating board, a sound-absorbing material and an internal faceplate. The internal faceplate faces the inside of the sound-insulating cover (1). The sound-absorbing material is any one of glass wool, melamine foam and polyurethane foam.

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