Silencing and ventilating device for industrial upstairs

Abstract

The utility model discloses a noise elimination ventilation device for industrial upstairs, which comprises a fan and a silencer fixedly mounted at an air outlet of the fan, a hole pipe is fixedly mounted in the silencer, and a plurality of drainage plates and baffles for guiding the wind direction are axially and fixedly mounted on the inner wall of the hole pipe. The silencer further comprises a bearing assembly formed by assembling a pair of supporting rings and a plurality of U-shaped rods, the bearing assembly is arranged between the hole pipe and the silencer, and the space between the pair of supporting rings is filled with sound absorption cotton. The supporting ring, the U-shaped rod, the U-shaped frame, the rotating frame and the roller round bolt are assembled in the silencer to form the bearing assembly used for installing the sound-absorbing cotton, the roller round bolt elastically abuts against the hole pipe so that the bearing assembly can stably slide in a clamping cavity between the hole pipe and the silencer, the structure is simple, dismounting and mounting are convenient, and the bearing assembly is suitable for popularization and application. And convenience is provided for installation and aged replacement of the sound-absorbing cotton.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation device field, concretely is a kind of silencing ventilation device for industry upstairs. BACKGROUND

[0002] Industrial upstairs is a new type of industrial production mode, and its core is to move industrial production activities to high-rise buildings to improve land use efficiency and volume rate. In the industrial upstairs mode, the production activities of the factory are usually carried out in a multi-story building, which requires the ventilation system not only to effectively remove indoor harmful gases and heat, but also to control noise pollution to meet the requirements of environmental protection and occupational health.

[0003] Currently, the fan removes the exhaust gas and smoke generated during industrial production. The inlet of the fan is a negative pressure air suction that does not produce much noise. The outlet of the fan is a compressed gas discharge position. Therefore, a silencer is usually installed at the outlet to reduce noise. The principle of the fan silencer is to reduce the noise generated by the fan and absorb, reflect, scatter or isolate the noise to achieve the effect of noise reduction. It is mainly composed of a silencer cavity, sound-absorbing material and a sound-absorbing structure. The sound-absorbing cotton of the conventional fan silencer is usually fixed inside the silencer by glue or other adhesives. This makes it necessary to remove the old sound-absorbing cotton and residual adhesive before replacement, which is a complicated process and increases the difficulty of replacing the aging sound-absorbing material. SUMMARY

[0004] The utility model aims to provide a silencing ventilation device for industrial upstairs to solve the problem of inconvenient maintenance and replacement of sound-absorbing material in conventional fan silencers as mentioned in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a silencing ventilation device for industrial upstairs, comprising a fan and a silencer fixedly installed at the outlet of the fan. A hole pipe is fixedly installed inside the silencer. A plurality of drainage plates for guiding wind direction and baffles are fixedly installed on the inner wall of the hole pipe in an axial direction. The drainage plates and the baffles cooperate to form a labyrinth air duct in the hole pipe. The device further comprises a supporting assembly composed of a pair of supporting rings and a plurality of U-shaped rods. The supporting assembly is arranged between the hole pipe and the silencer. Sound-absorbing cotton is filled between the pair of supporting rings.

[0006] Preferably, one end of the silencer close to the outlet of the fan is the air inlet end, and the other end is the air outlet end. The side wall of the supporting ring at the air outlet end of the silencer extends along the axial direction of the silencer with a surrounding edge.

[0007] Preferably, an end cover is fixedly installed at the air outlet end of the silencer. The end part of the surrounding edge of the supporting ring is in contact with the inner wall of the end cover.

[0008] Preferably, the side wall of the hole pipe is integrally formed with a plurality of concave sections distributed in a circumferential manner, the side wall of the flow guide plate and the side wall of the baffle are respectively fixedly installed with lug blocks, and the lug blocks are correspondingly fixedly connected with the concave sections of the hole pipe.

[0009] Preferably, the side wall of the support ring at the exhaust end of the muffler is fixedly installed with a plurality of limiting rods, a limiting block is rotatably installed on the limiting rod, and a groove for accommodating the U-shaped rod is arranged on the side of the limiting block close to the support ring.

[0010] Preferably, a plurality of U-shaped frames are fixedly installed on the bottom wall of the support ring at the exhaust end of the muffler, a rotating frame is rotatably installed on the U-shaped frame, a roller round bolt is fixedly installed at one end of the rotating frame, and the roller round bolt and the U-shaped frame are connected through an elastic member, so that the roller round bolt makes a circumferential movement to be in contact with the hole pipe through the elastic member.

[0011] Preferably, the elastic member is a tension spring, a through hole for accommodating the tension spring is arranged on the side wall of the U-shaped frame, and a cross rod is fixedly installed on the inner wall of the rotating frame, and the two ends of the tension spring are respectively in contact with the through hole and the cross rod.

[0012] Preferably, a plurality of the U-shaped rods are arranged in a ring array along the axial direction of the support ring, half of the U-shaped rods are slidably installed between a pair of the support rings, a pair of springs are arranged on one side of the U-shaped rod slidably installed between the support rings, and a U-shaped plate is arranged at the end of the U-shaped rod, and the U-shaped plate is arranged above the rotating frame.

[0013] Compared with the prior art, the muffler has the following beneficial effects:

[0014] The support ring, the U-shaped rod, the U-shaped frame, the rotating frame and the roller round bolt are assembled in the muffler to form a supporting assembly for mounting the sound-absorbing cotton, the roller round bolt is elastically contacted with the hole pipe to facilitate the stable sliding of the supporting assembly in the clamping cavity of the hole pipe and the muffler, and when the supporting assembly is installed in place, the cooperation of the U-shaped rod and the U-shaped plate makes the roller round bolt away from the surface of the hole pipe to avoid abnormal noise, the structure is simple, the disassembly and assembly are convenient, and the installation and aging replacement of the sound-absorbing cotton are facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a cut open three-dimensional structure schematic view of the utility model muffler;

[0017] Figure 3A supporting assembly and hole pipe assembly three-dimensional structure schematic view of the utility model;

[0018] Figure 4 A supporting assembly three-dimensional structure schematic view of the utility model;

[0019] Figure 5 A supporting assembly cut open partial three-dimensional structure schematic view of the utility model;

[0020] Figure 6 A U-shaped frame and rotating frame assembly three-dimensional structure schematic view of the utility model.

[0021] In the drawing: 1, fan; 2, silencer; 3, sound absorbing cotton; 4, hole pipe; 5, drainage plate; 6, baffle; 7, support ring; 8, U-shaped rod; 9, limiting rod; 10, limiting block; 11, spring; 12, U-shaped frame; 13, tension spring; 14, rotating frame; 15, roller round bolt; 16, U-shaped plate; 17, cross bar. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0023] Please refer to Figures 1-3The utility model provides a kind of technical scheme: a sound attenuation ventilation device for industry upstairs, including fan 1 and fixedly installed at the fan 1 air outlet sound attenuator 2, sound attenuator 2 is fixedly installed with hole pipe 4, hole pipe 4 is equipped with multiple sound holes (because prior art, not shown in the attached drawings of the specification), multiple drainage plates 5 for guiding wind direction, baffle 6 are fixedly installed on the inner wall of hole pipe 4, sound attenuator 2 is close to the air inlet end of fan 1 air outlet, the other end is exhaust end, it is worth integrating that, the inner diameter of drainage plate 5 extends along the axis of sound attenuator 2 to the exhaust end of sound attenuator 2, the side wall of hole pipe 4 is integrally formed with multiple inner recess segments in the form of circle distribution, the side wall of drainage plate 5, baffle 6 is fixedly installed with ear block respectively, ear block is corresponding with the inner recess segment of hole pipe 4 and is fixedly connected, drainage plate 5 and baffle 6 cooperate in hole pipe 4 and form labyrinth air duct, the advantage of such arrangement is that, drainage plate 5, baffle 6 cooperate, make the sound wave that spreads along sound attenuator 2 reflect back to sound source direction, simultaneously utilize the reflection of several interfaces, to mutually interfere and cancel, reach sound attenuation effect, still include by a pair of support ring 7, a plurality of U-shaped rods 8 assembly component of assembly, assembly component is set between hole pipe 4 and sound attenuator 2, a pair of support ring 7 is filled with sound-absorbing cotton 3, the present application prolongs the time of airflow in sound attenuator 2 by drainage plate 5, baffle 6 cooperation, to make noise better be absorbed, and sound-absorbing cotton 3 is installed in the clamping cavity of hole pipe 4, sound attenuator 2 by assembly component, assembly is convenient, also provide convenience for sound-absorbing cotton 3 aging replacement.

[0024] Please refer to Figures 3-6The side wall of the support ring 7 located at the exhaust end of the muffler 2 extends along the axial direction of the muffler 2 and is provided with a surrounding edge, the exhaust end of the muffler 2 is fixedly provided with an end cover, the end cover is connected with the muffler 2 through bolt fixing, the end of the surrounding edge of the support ring 7 is in contact with the inner wall of the end cover, the side wall of the support ring 7 located at the exhaust end of the muffler 2 is fixedly provided with a plurality of limiting rods 9, the limiting rods 9 are rotatably provided with limiting blocks 10, the side of the limiting blocks 10 close to the support ring 7 is provided with a groove for accommodating the U-shaped rods 8, the bottom wall of the support ring 7 located at the exhaust end of the muffler 2 is fixedly provided with a plurality of U-shaped frames 12, the U-shaped frames 12 are rotatably provided with rotating frames 14, one end of the rotating frames 14 is fixedly provided with a roller round bolt 15, the roller round bolt 15 is connected with the U-shaped frame 12 through an elastic member, the elastic member is a tension spring 13, the side wall of the U-shaped frame 12 is provided with a through hole for accommodating the tension spring 13, the inner wall of the rotating frame 14 is fixedly provided with a cross rod 17, the two ends of the tension spring 13 are in contact with the through hole and the cross rod 17 respectively, so that the roller round bolt 15 makes a circular motion through the elastic member to be in contact with the hole pipe 4, the advantage of this arrangement is that the friction between the supporting assembly and the hole pipe 4 is reduced, and the supporting assembly is conveniently pulled out from the exhaust end of the muffler 2 to replace the sound-absorbing cotton 3, a plurality of U-shaped rods 8 are arranged in a ring array along the axial direction of the support ring 7, half of the U-shaped rods 8 are slidably arranged between a pair of support rings 7, the U-shaped rods 8 are sleeved with a pair of springs 11 on one side of the support ring 7, and the end of the U-shaped rods 8 is sleeved with a U-shaped plate 16, the U-shaped plate 16 is located above the rotating frame 14, when the supporting assembly is pushed into the muffler 2, the rotating frame 14 is rotated to the position where the roller round bolt 15 is in contact with the hole pipe 4 under the cooperation of the roller round bolt 15, the supporting assembly slides smoothly and stably, when the supporting assembly moves to the specified position, the U-shaped rods 8 are pressed to compress the springs 11 and move downward to the position where the U-shaped plate 16 is in contact with the rotating frame 14, the rotating frame 14 makes a circular motion under the force to move the roller round bolt 15 away from the hole pipe 4, then the limiting block 10 is rotated to the position above the U-shaped rod 8, after the U-shaped rod 8 is released, the spring 11 releases the elastic potential energy and drives the U-shaped rod 8 to be embedded in the groove at the bottom of the limiting block 10, the limiting block 10 limits the U-shaped rod 8, the advantage of this arrangement is that the resonance of the fan 1 and the muffler 2 is avoided to prevent the roller round bolt 15 and the hole pipe 4 from contacting and making abnormal sound, the supporting assembly for mounting the sound-absorbing cotton 3 is assembled in the muffler 2 through the support ring 7, the U-shaped rod 8, the U-shaped frame 12, the rotating frame 14 and the roller round bolt 15, the supporting assembly stably slides in the clamping cavity of the hole pipe 4 and the muffler 2 through the elastic contact between the roller round bolt 15 and the hole pipe 4, and when the supporting assembly is installed in place, the roller round bolt 15 is driven by the cooperation of the U-shaped rod 8 and the U-shaped plate 16 to move away from the surface of the hole pipe 4 to avoid abnormal sound, the structure is simple and convenient to disassemble and assemble, and the installation and aging replacement of the sound-absorbing cotton 3 are facilitated.

[0025] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0026] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A sound attenuating ventilator for use in industrial stairways, characterized by: The utility model provides an air silencer of fan, it includes fan (1) with fixed installation at the fan (1) air outlet silencer (2), fixed installation has hole pipe (4) in the silencer (2), the inner wall of hole pipe (4) is fixedly installed with multiple for guiding the flow direction's guide plate (5), baffle (6), the guide plate (5) with the baffle (6) cooperate in the hole pipe (4) form labyrinth air passage, still include by a pair of support ring (7), several U-shaped bars (8) assembly component of assembling, the support assembly is set up between the hole pipe (4) with the silencer (2), a pair of support ring (7) between fill sound absorption cotton (3).

2. A silencer for industrial stairway according to claim 1, characterized in that: The silencer (2) is close to the air inlet end of the fan (1) air outlet, the other end is exhaust end, the side wall of support ring (7) at the exhaust end of silencer (2) extends along the axial direction of silencer (2) and has a surrounding edge.

3. A silencer for industrial use according to claim 2, wherein: The exhaust end of the silencer (2) is fixedly installed with an end cover, and the end of the surrounding edge of the support ring (7) is in contact with the inner wall of the end cover.

4. A sound attenuating ventilation unit for industrial use according to claim 1, wherein: The side wall of the hole pipe (4) is integrally formed with a plurality of inner recesses distributed in a circumferential direction, and the side walls of the guide plates (5) and the baffle (6) are fixedly installed with ear blocks, respectively.

5. A sound attenuating ventilation unit for industrial use according to claim 1, wherein: The side wall of the support ring (7) at the exhaust end of the silencer (2) is fixedly installed with a plurality of limiting rods (9), the limiting rods (9) are rotatably installed with limiting blocks (10), and the side of the limiting blocks (10) close to the support ring (7) is provided with a groove for accommodating the U-shaped bars (8).

6. A sound attenuating ventilation unit for industrial use according to claim 2, wherein: A plurality of U-shaped frames (12) are fixedly installed on the bottom wall of the support ring (7) at the exhaust end of the silencer (2), the U-shaped frames (12) are rotatably installed with rotating frames (14), one end of the rotating frames (14) is fixedly installed with a roller round bolt (15), and the roller round bolt (15) and the U-shaped frame (12) are connected through an elastic member, so that the roller round bolt (15) makes a circular motion through the elastic member to contact the hole pipe (4).

7. A silencer for industrial use according to claim 6, characterized in that: The elastic member is a tension spring (13), the side wall of the U-shaped frame (12) is provided with a through hole for accommodating the tension spring (13), and the inner wall of the rotating frame (14) is fixedly installed with a cross bar (17), and the two ends of the tension spring (13) are in contact with the through hole and the cross bar (17), respectively.

8. A silencer for industrial use according to claim 6, wherein: A plurality of U-shaped bars (8) are arranged in a ring array along the axial direction of the support ring (7), half of the U-shaped bars (8) are slidingly installed between a pair of support rings (7), the slidingly installed U-shaped bars (8) are sleeved with a pair of springs (11) on one side of the support ring (7), and the end portions are sleeved with U-shaped plates (16), and the U-shaped plates (16) are located above the rotating frames (14).

Images