CN210919583U - Noise eliminator for blower - Google Patents

Abstract

The utility model relates to a noise eliminator for on air-blower, the inside noise elimination subassembly that is equipped with of casing, the casing below is equipped with the part of admitting air, and the casing top is equipped with the venthole, and the inside multilayer grid board that is equipped with of net cover is equipped with the reinforcing plate between net cover and the casing, and the cushion chamber is connected to the casing of noise elimination subassembly below, and the cushion chamber is venturi, is equipped with the intake pipe below relatively. The utility model is provided with the air inlet pipes relatively, the two air flows collide with each other, the kinetic energy of the air is consumed, and the flow rate of the air is reduced; the buffer cavity is a Venturi tube, the Venturi tube forms a negative pressure area in the cavity, the negative pressure area generates suction, gas changes the flow direction, and enters the silencing assembly, so that the silencing effect is good.

Description

Muffler for blowers

technical field

The utility model relates to the technical field of mufflers, in particular to a muffler used on a blower.

Background technique

A muffler is a device that prevents sound from propagating and allows airflow to pass, and is an important measure to eliminate aerodynamic noise. The muffler is installed on the airflow channel or on the intake and exhaust systems of aerodynamic equipment (such as blowers, air compressors, boiler exhaust ports, generators, water pumps, etc.) noise device.

If the gas directly enters the muffler device, the muffler effect is not very good due to the fast gas flow rate. If the gas enters the muffler device through the elbow, the change of the gas flow direction can reduce the gas flow rate, but the impact force of the high-speed gas on the pipe is too large, and the reduction of the gas flow rate is not ideal.

SUMMARY OF THE INVENTION

The purpose of this utility model is to provide a novel muffler device for a blower, which improves the structure of the air inlet pipe, and the collision of two air streams consumes the kinetic energy of the gas flow and reduces the gas flow rate.

In order to solve the above problems, the technical scheme adopted by the present utility model is as follows:

The muffler device used on the blower includes a shell, an air intake part, a muffler assembly, and an air outlet. The shell is equipped with a muffler assembly, an air intake part is arranged under the shell, and an air outlet is arranged above the shell. The muffler assembly includes a multi-layer grid plate and a grid cover. The grid cover is provided with a multi-layer grid plate, and a reinforcing plate is arranged between the grid cover and the shell. It is characterized in that the air intake part includes an air intake pipe, In the buffer cavity, the shell below the muffler assembly is connected to the buffer cavity, the buffer cavity is a venturi tube, and an air intake pipe is oppositely arranged below the buffer cavity.

Further, the reinforcing plate includes an upper plate and a side plate, the upper plate is crossed, the upper plate is arranged on the top of the grid cover, the side plate is arranged on the side of the grid cover, and the top of the side plate is connected with the end of the upper plate.

Further, a rain cap is arranged above the air outlet, and noise absorption cotton is arranged on the inner side of the rain cap.

Further, the grid plate is coated with titanium dioxide coating.

Compared with the prior art, the beneficial features of the present utility model:

There is an air inlet pipe opposite to the lower part of the buffer chamber, the gas enters the lower part of the buffer chamber relatively at a high speed, and the two airflows collide, the kinetic energy of the gas is consumed by each other, and the gas flow rate decreases;

The air intake part includes an air intake pipe and a buffer cavity. The shell under the muffler assembly is connected to the buffer cavity. The buffer cavity is a venturi tube. The venturi tube forms a negative pressure area inside the cavity. After the two gases collide, the negative pressure area Suction is generated, the gas changes the flow direction, and the gas enters the muffler assembly;

The utility model can consume the kinetic energy of the gas in the gas inlet part and reduce the gas flow rate, and the gas flow rate is further reduced under the blocking of the inner grid plate, so the noise reduction effect is good.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the front view of the muffler device used on the blower according to the utility model;

2 is a structural diagram of the muffler assembly according to the utility model;

Fig. 3 is the internal structure diagram of the muffler assembly according to the utility model;

Reference numerals: housing-1, air intake part-2, air intake pipe-21, buffer chamber-22, muffler assembly-3, grille plate-31, mesh cover-32, air outlet-4, upper plate -51, side panel -52, rain cap -6.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be more clearly defined.

Refer to Figure 1, Figure 2, Figure 3 in the description:

The muffler device used on the blower includes a shell 1, an air intake part 2, a muffler assembly 3, and an air outlet 4. The shell 1 is equipped with a muffler assembly 3, and the lower part of the shell 1 is provided with an intake part 2, The upper part of the housing 1 is provided with an air outlet 4, and the muffler assembly includes a multi-layer grid plate 31 and a grid cover 32. The grid cover 32 is provided with a multi-layer grid plate 31, and the multi-layer grid plates are arranged from top to bottom. , the diameter of the grid plate is 96cm, the interval between the upper and lower adjacent grid plates is 10cm, and a reinforcing plate 5 is provided between the grid cover 32 and the shell 1, and the reinforcing plate is used to enhance the support strength of the grid cover. The air intake part 2 includes The air intake pipe 21, the buffer cavity 22, and the casing below the muffler assembly are connected to the buffer cavity, the buffer cavity 22 is a venturi tube, and an air intake pipe 21 is oppositely arranged below the buffer cavity. There is an air intake pipe opposite to the lower part of the buffer chamber. The gas enters the buffer chamber relatively at a high speed. The two airflows collide, the kinetic energy of the gas is consumed by each other, and the gas flow rate decreases; The shell is connected to the buffer cavity, and the buffer cavity is a Venturi tube. The Venturi tube forms a negative pressure area inside the cavity. After the two gases collide, the negative pressure area generates suction, the gas changes its flow direction, and the gas enters the muffler assembly.

Referring to Fig. 2 of the description, further, the reinforcing plate 5 includes an upper plate 51 and a side plate 52. The upper plate 51 is crossed, the upper plate 51 is arranged on the top of the grid cover 32, and the side plate 52 is arranged on the side of the grid cover 32. The top of the side plate 52 is connected with the end of the upper plate 51. The reinforcing plate supports and strengthens the radial and axial directions of the grid cover.

Referring to Fig. 1 of the specification, further, a rain cap 6 is arranged above the air outlet 4, and a noise absorption cotton is arranged inside the rain cap 6, and the noise absorption cotton here is made of felt. The rain cap not only prevents rainwater from entering the muffler, but also the noise-absorbing cotton in the inner layer of the rain cap has a certain adsorption effect on noise.

Further, the grid plate 31 is coated with a titanium dioxide coating, and the titanium dioxide has a certain purification effect on the polluted organic matter in the gas.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the specification are only preferred examples of the present utility model, and the present utility model is not limited by the above-mentioned preferred examples. Under the premise of departing from the spirit and scope of the present utility model, the present utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of protection of the present utility model.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (4)

1. A noise eliminator for on air-blower, which comprises a housin, the part of admitting air, the noise elimination subassembly, the venthole, the inside noise elimination subassembly that is equipped with of casing, the casing below is equipped with the part of admitting air, the casing top is equipped with the venthole, the noise elimination subassembly includes multilayer grid board, the net covers, the inside multilayer grid board that is equipped with of net cover, be equipped with the reinforcing plate between net cover and the casing, a serial communication port, the part of admitting air includes intake pipe, cushion chamber, the cushion chamber is connected to the casing of noise elimination subassembly below, the cushion chamber is venturi, the cushion chamber below is equipped with.

2. The muffling device for a blower of claim 1, wherein the reinforcing plate comprises an upper plate and a side plate, the upper plate is intersected with the cross, the upper plate is disposed on the top of the mesh cover, the side plate is disposed on the side of the mesh cover, and the top of the side plate is connected to the end of the upper plate.

3. The muffling device for a blower according to claim 1, wherein a rain cap is disposed above the air outlet, and noise-absorbing cotton is disposed inside the rain cap.

4. The muffling device of claim 1, wherein the grid plates are coated with a titanium dioxide coating.

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