Exhaust silencer purification cap

Abstract

The present invention provides an exhaust silencer and purification cap, which belongs to the field of ventilation technology. It solves the problem that the airflow of the existing dust collector is prone to generate noise and form dust pollution areas on the wall or ceiling when it is used in a narrow factory. The exhaust silencer and purification cap includes a cap body and a supporting foot. The cap body is provided with a silencer cavity, and the side wall of the silencer cavity of the cap body is provided with a plurality of air holes, and the silencer cavity is filled with fillers; the upper end of the supporting foot is fixedly connected to the cap body, and the lower end of the supporting foot is provided with a mounting connection structure, and there is a wind dissipation gap between the mounting connection structure and the cap body. The exhaust silencer and purification cap can ensure smooth discharge of airflow and ensure the efficiency of the dust collector. When the dust collector is used in a narrow factory, the exhaust silencer and purification cap prevents the airflow from directly impacting the wall or ceiling, and prevents the formation of dust pollution areas on the wall or ceiling. The exhaust silencer and purification cap not only prevents the formation of noise by gradually reducing the rapid and large airflow, but also can further separate the dust in the airflow.

Description

Technical Field

[0001] The invention belongs to the technical field of ventilation and relates to a silencing device, in particular to an exhaust silencing purification cap. Background Art

[0002] A dust collector is a device that separates dust from flue gas. A dust collector must include a fan, which generates a lot of noise when in operation. For this reason, people have come up with the idea of ​​connecting a silencer in series with the exhaust pipe, such as a smoke purifier (application number 201120355404.4).

[0003] When the dust collector is used in a spacious factory, the silencer can reduce noise. However, when it is used in a narrow factory, there are usually problems such as blocked airflow and the exhaust vent is not far enough from the wall or ceiling, which leads to unclear noise reduction effect. In addition, since the dust removal efficiency of the dust collector is not 100%, the area on the wall or ceiling opposite to the exhaust vent is very easy to get dirty.

[0004] For this reason, people have come up with the idea of ​​using a silencer cap with a structure that changes the direction of airflow, such as a roof fan cap (application number 200920271596.3) and a silencer cap (application number 201821992227.9). In a dust collector, air volume and air pressure difference are extremely important technical requirements. Since the air volume of a dust collector is large, the above-mentioned silencer cap will seriously affect the smoothness of airflow, thereby reducing the air volume of the dust collector, reducing the air pressure difference, and affecting the dust collection and removal efficiency of the dust collector; since the dust removal efficiency of the dust collector is not 100%, dust is very easy to adhere to the silencer cap, affecting its silencing effect and service life. Summary of the invention

[0005] The present invention proposes an exhaust silencer purification cap. The technical problem to be solved by the present invention is how to ensure the efficiency of the dust collector and reduce the noise; preferably, the airflow noise of the dust collector can be reduced when it is used in a narrow factory building.

[0006] The technical problem to be solved by the present invention can be achieved through the following technical solutions: an exhaust and silencer purification cap, comprising a cap body and a supporting foot, the cap body is provided with a silencer cavity, the side wall of the silencer cavity of the cap body is provided with a plurality of air holes, and the silencer cavity is filled with filler; the upper end of the supporting foot is fixedly connected to the cap body, the lower end of the supporting foot is provided with an installation connection structure, and a wind dispersion gap is provided between the installation connection structure and the cap body.

[0007] The exhaust silencer and purification cap is installed on other components, such as an exhaust pipe or a dust collector shell, through the installation connection structure. The support feet allow a certain distance between the cap body and the exhaust pipe port. After the airflow is discharged through the exhaust pipe, part of the airflow diffuses to the surroundings through the wind dispersion gap, and the other part of the airflow impacts the cap body. The airflow partially diffuses to the surroundings under the obstruction of the cap body, and the space between the cap body and the exhaust pipe port ensures that the airflow can diffuse smoothly. Most of the airflow enters the silencer cavity through the air holes. The air pressure on the side of the cap body opposite to the airflow is greater than the air pressure on the other side. Obviously, the airflow enters through the air holes on one side wall of the silencer cavity, and is discharged from the air holes on the other side walls and diffuses to the surroundings. The filler forms many tortuous channels in the silencer cavity, thereby gradually dividing the rapidly flowing large airflow into multiple slowly flowing small airflows. Therefore, the exhaust silencer and purification cap has a silencer function. At the same time, dust gradually adheres to the filler during the flow of the airflow, and has a dust removal function, which can improve the dust removal efficiency of the dust collector.

[0008] Compared with the existing technology, the exhaust silencing purification cap can ensure smooth air discharge. When installed on the dust collector, the exhaust silencing purification cap will basically not affect the air volume and air pressure difference of the dust collector, thereby ensuring the efficiency of the dust collector. At the same time, when the dust collector is used in a narrow factory, the exhaust silencing purification cap prevents the airflow from directly impacting the wall or ceiling, thereby preventing the formation of dust pollution areas on the wall or ceiling. The exhaust silencing purification cap gradually reduces the rapid and large airflow, which not only avoids the formation of noise, but also further separates the dust in the airflow.

[0009] In the above-mentioned exhaust silencing purification cap, the filler is ceramsite, sponge ball or hollow plastic ball. The above-mentioned filler has the advantages of light weight, low price, and can be repeatedly washed and used.

[0010] In the above-mentioned exhaust silencer and purification cap, a loading port is provided on the side wall of the silencer cavity, and a cover plate capable of covering the loading port is installed on the side wall of the silencer cavity; this structure facilitates the taking and placing of fillers, and thus the exhaust silencer and purification cap has the advantages of easy maintenance and long service life.

[0011] In the above-mentioned exhaust silencing and purification cap, the cap body can adopt any of the following shapes: the cap body is in a frustum shape, or the cap body is in a column shape. The frustum shape cap body makes the central area of ​​the airflow need a longer distance to flow through the exhaust silencing and purification cap than the outer area, which is consistent with the fact that the central area of ​​the airflow has a higher speed than the outer area, thus improving the silencing effect and dust removal effect and reducing the amount of filler used.

[0012] In the above-mentioned exhaust, silencer and purification cap, when the cap body is in a frustum shape, the bottom area of ​​the conical side wall of the cap body is a baffle; or when the cap body is in a columnar shape, an inclined guide plate is fixedly connected to the bottom of the cap body. Both the baffle and the guide plate can increase the airflow through the cap body, reduce the diffusion amount, and thus reduce noise and eliminate the dust pollution area in the wall or ceiling as much as possible.

[0013] In the above-mentioned exhaust, silencer and purification cap, the exhaust, silencer and purification cap also includes a conical guide cone, which is fixedly connected to the bottom of the cap body; the guide cone also has a plurality of air holes connected to the silencer cavity. The guide cone makes it easier to disperse the central area of ​​the airflow, and allows the airflow to gradually enter the silencer cavity, thereby improving the smoothness of the airflow and reducing the possibility of turbulence.

[0014] The guide cone can be installed in any of the following ways: first, in the above-mentioned exhaust, silencer and purification cap, the tip of the guide cone is set downward, and the inner cavity of the cap body is connected to the inner cavity of the guide cone. Second, in the above-mentioned exhaust, silencer and purification cap, the tip of the guide cone is set upward, and the guide cone is located in the cap body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 and Figure 2 It is a schematic diagram of the three-dimensional structure of the first embodiment from different viewing angles.

[0016] Figure 3 It is a schematic cross-sectional structural diagram of the first embodiment.

[0017] Figure 4 It is a schematic cross-sectional view of the second embodiment.

[0018] Figure 5 It is a schematic cross-sectional view of the structure of the third embodiment.

[0019] In the figure, 1, cap body; 1a, baffle; 2, support foot; 2a, hoop; 3, guide cone; 4, air hole; 5, filler; 6, cover plate; 7, guide plate. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] Embodiment 1: Figures 1 to 3 As shown, an exhaust, silencer and purification cap includes a cap body 1, a supporting foot 2 and a guide cone 3.

[0022] The guide cone 3 is conical in shape and is inverted, that is, the pointed end faces downward, and the guide cone 3 is fixedly connected to the bottom of the cap body 1; the guide cone 3 is used to disperse the airflow, that is, to diffuse the airflow to all sides.

[0023] The cap body 1 and the guide cone 3 are both thin-walled components, and the inner cavity of the cap body 1 is connected with the inner cavity of the guide cone 3 to form a silencer cavity. The side wall of the silencer cavity is provided with a plurality of air holes 4, and the filler 5 fills the silencer cavity. In order to ensure the air intake and exhaust effect and prevent the filler 5 from leaking, the air holes 4 are numerous and dense, and the air holes 4 are arranged in an orderly manner, and the side wall of the silencer cavity is in a mesh shape.

[0024] The cap body 1 is in a frustum shape, and usually the frustum shape of the cap body 1 matches the shape of the guide cone 3, that is, the cap body 1 and the guide cone 3 are both in the shape of a cone, a triangular pyramid, a quadrangular pyramid, a pentagonal pyramid or a hexagonal pyramid.

[0025] When in use, the pointed end of the guide cone 3 faces the exhaust port, and the air flows in from the air hole 4 of the guide cone 3 and flows out from the air hole 4 on the side wall of the cap body 1; in this way, the distance required for the central area of ​​the air flow to flow through the exhaust silencer and purification cap is larger than that of the outer area, which is consistent with the fact that the speed of the central area of ​​the air flow is greater than that of the outer area, which not only improves the silencer and dust removal effects, but also reduces the use of filler 5.

[0026] The bottom area of ​​the conical side wall of the cap body 1 is a baffle 1a, which is used to prevent the airflow from continuing to flow upward along the side of the guide cone 3, so that part of the airflow diffuses to the surroundings and part of the airflow flows toward the center of the cap body 1.

[0027] The top of the cap body 1 has a charging port connected to the muffler cavity, and a cover plate 6 that can cover the charging port is detachably mounted on the top of the cap body 1, so that the filler 5 can be loaded into the muffler cavity through the charging port and can be taken out through the charging port; it has the advantage of convenient replacement and maintenance of the filler 5. The filler 5 is ceramsite, sponge ball or hollow plastic ball.

[0028] The support foot 2 is located below the cap body 1, and the upper end of the support foot 2 is fixedly connected to the cap body 1 or the guide cone 3. The support foot 2 includes a support rod, and a mounting connection structure is provided at the lower end of the support rod. There is a wind dissipation gap between the mounting connection structure and the cap body 1, and the gap between the support rods is the wind dissipation gap. The mounting connection structure includes a hoop 2a, so that the hoop 2a is sleeved on the exhaust pipe, and the exhaust silencer purification cap can be installed by locking the hoop 2a.

[0029] Embodiment 2: Figure 4 As shown, the structure and principle of this embodiment are basically the same as those of the first embodiment, and the basic similarities are not described in detail. Only the differences are described, which are as follows: the cap body 1 is columnar, the guide cone 3 is upright, that is, the pointed end faces upward, the guide cone 3 is located inside the cap body 1, and the guide cone 3 is fixedly connected to the bottom of the cap body 1; the guide cone 3 allows the airflow to gradually flow into the cap body 1. The bottom of the cap body 1 is fixedly connected with an inclined guide plate 7, which allows the airflow to flow toward the center of the cap body 1.

[0030] Embodiment 3: Figure 5As shown, the structure and principle of this embodiment are basically the same as those of the first embodiment, and the basic similarities are no longer described in detail, and only the differences are described. The differences are: the exhaust silencer purification cap does not include a guide cone 3, the bottom wall of the silencer cavity is flat, and the bottom wall of the silencer cavity is located above the bottom edge of the cap body 1.

Claims

1. An exhaust and silencing purification cap, comprising a cap body (1) and a supporting foot (2), characterized in that: The cap body (1) is in the shape of a cone, and the exhaust silencer purification cap also includes a conical guide cone (3), the guide cone (3) is inverted, and the guide cone (3) can diffuse the airflow in all directions. The guide cone (3) is fixedly connected to the cap body (1), and the bottom area of ​​the conical side wall of the cap body (1) is a baffle (1a), which is located outside the guide cone (3). The baffle (1a) is used to prevent the airflow from continuing to flow upward along the side of the guide cone (3); the inner cavity of the cap body (1) and the inner cavity of the guide cone (3) are connected together to form a silencer cavity, and the side walls of the silencer cavity of the cap body (1) and the side walls of the silencer cavity of the guide cone (3) are both provided with a plurality of air holes (4), and the silencer cavity is filled with filler (5); the upper end of the support foot (2) is fixedly connected to the cap body (1), and the lower end of the support foot (2) is provided with a mounting connection structure, and a wind dispersion gap is provided between the mounting connection structure and the cap body (1); When the exhaust silencer and purification cap is in use, the support feet (2) ensure that there is a certain distance between the cap body (1) and the exhaust pipe port, and the pointed end of the guide cone (3) faces the exhaust port. Air flow can flow in from the air hole (4) of the guide cone (3) and flow out from the air hole (4) on the side wall of the cap body (1). The filler (5) can also separate dust in the air flow.

2. The exhaust and silencing purification cap according to claim 1 is characterized in that: The filler (5) fills the silencer cavity.

3. The exhaust and silencing purification cap according to claim 1 is characterized in that: The filler (5) is ceramsite, sponge balls or hollow plastic balls.

4. The exhaust and silencing purification cap according to claim 1 is characterized in that: A charging port is provided on the side wall of the muffler chamber, and a cover plate (6) capable of covering the charging port is installed on the side wall of the muffler chamber.

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