CN218862895U

CN218862895U - Exhaust silencer, exhaust silencer assembly comprising same and cleaning equipment

Info

Publication number: CN218862895U
Application number: CN202222924909.9U
Authority: CN
Inventors: 孙永海; 梁海军
Original assignee: Beijing Idriverplus Technologies Co Ltd
Current assignee: Beijing Idriverplus Technologies Co Ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-04-14
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses an exhaust silencer, an exhaust silencer component containing the exhaust silencer and a cleaning device, wherein an air inlet pipe and an exhaust pipe are respectively arranged at two opposite ends of a shell of the exhaust silencer; the inner space of the shell is sequentially divided into a first cavity, a second cavity and a third cavity by a first partition plate and a second partition plate along the direction from the air inlet pipe to the exhaust pipe, the first partition plate and the second partition plate are respectively provided with a first through hole, the air outlet end of the air inlet pipe is positioned in the third cavity, and the air inlet end of the exhaust pipe is positioned in the first cavity; the second cavity is internally provided with an air duct communicated with the first cavity and the third cavity, the wall of the air duct is provided with a second through hole, and a first resistive sound-absorbing material layer is formed on the peripheries of the air inlet pipe, the air outlet pipe and the air duct in the second cavity. The utility model provides an air exhaust silencer is through combining above-mentioned characteristic organically together, has formed the compound muffler of pluralism to the noise of sewage suction fan during operation has effectively been reduced.

Description

Exhaust silencer, exhaust silencer assembly comprising same and cleaning equipment

Technical Field

The invention relates to the field of cleaning equipment manufacturing, in particular to an exhaust silencer, an exhaust silencer assembly comprising the exhaust silencer and cleaning equipment.

Background

In recent years, along with the development of economy and the improvement of the domestic living standard, the cleaning requirements of various places such as homes, markets and the like are gradually changed from manual labor to mechanization and intellectualization, and the cleaning robot can liberate the labor from the cleaning work of various places such as homes, markets and the like, effectively relieves the workload of people in the aspect of cleaning the scenes, and relieves the fatigue degree of people in the cleaning process of the places such as homes, markets and the like.

The sewage suction fan on the cleaning robot is an essential part, an air inlet of the sewage suction fan is usually communicated with a sewage tank of the cleaning robot, negative pressure is generated by the sewage suction fan to suck sewage after the ground is cleaned into the sewage tank through the water suction rake, and the cleaned ground is clean and free of sewage.

The sewage suction fan during operation can produce very big noise, and current cleaning machines people perhaps do not have to air exhaust to the sewage suction fan and fall the noise processing, influences user experience, causes the environmental noise pollution. Or only paste the cotton processing of bubble around the soil pick-up fan, noise reduction effect is not good on the one hand, and on the other hand influences the heat dissipation of soil pick-up fan, leads to the soil pick-up fan high temperature easily, has inflammable risk. And the operation of pasting the foam is complex and the replacement is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a muffler of airing exhaust for cleaning device sewage suction fan to reduce the noise of cleaning device's sewage suction fan during operation. An object of the second aspect of the present invention is to provide an air exhaust silencer assembly for a cleaning device dirt suction fan. An object of the utility model is to provide a cleaning device including above-mentioned muffler subassembly of airing exhaust.

In order to achieve the above object, the utility model provides an exhaust silencer for a cleaning device sewage suction fan in a first aspect, which comprises a shell, wherein an air inlet pipe and an exhaust pipe are respectively arranged at two opposite ends of the shell; the inner space of the shell is sequentially divided into a first chamber, a second chamber and a third chamber for resistant noise reduction by a first partition plate and a second partition plate along the direction from the air inlet pipe to the exhaust pipe, the first partition plate and the second partition plate are respectively provided with a first through hole which is communicated with the adjacent chambers and can reduce noise and exhaust resistance,

the air outlet end of the air inlet pipe is positioned in the third chamber, and the air inlet end of the exhaust pipe is positioned in the first chamber, so that the stroke of air flow in the exhaust silencer is increased, and the sound energy of air flow noise is reduced;

the second chamber is internally provided with an air duct communicated with the first chamber and the third chamber, the wall of the air duct is provided with a second through hole for silencing the noise of the air flow passing through the air duct,

in the second chamber, a first resistive sound-absorbing material layer is formed on the peripheries of the air inlet pipe, the air outlet pipe and the air guide pipe in the second chamber so as to absorb airflow noise.

In some embodiments of the present invention, a third through hole is formed in a portion of the intake pipe located in the second chamber, for silencing the airflow noise of the intake pipe.

In some embodiments of the present invention, the first through hole, the second through hole, and the third through hole have a hole diameter of 3-5mm, and an interval between two adjacent holes is 3-5mm.

In some embodiments of the present invention, the wall of the inlet end of the inlet pipe, which is located outside the housing, is coated with a second resistive sound absorbing material layer,

and/or

Wear to be equipped with the blast pipe the one end of casing covers has the resistive sound absorbing material layer of third.

In some embodiments of the present invention, the inner diameter of the intake pipe, the exhaust pipe and the air duct is matched with the exhaust volume of the sewage suction fan.

The utility model discloses the second aspect provides a muffler subassembly of airing exhaust for cleaning device dirt suction fan, include:

the exhaust silencer according to the first aspect,

a muffler bracket for fixing the exhaust muffler to the cleaning apparatus, and

and the sealing rubber sleeve is used for sealing and connecting the exhaust silencer with the air outlet of the sewage suction fan.

In some embodiments of the present invention, the muffler bracket includes:

a tubular portion for being closely fitted over an air intake end of an air intake duct of the exhaust muffler, and

a connection portion for fixed connection with the cleaning device, the connection portion being located at one end of the tubular portion and extending transversely to the axial direction of the tubular portion.

In some embodiments of the present invention, one side of the sealing rubber sleeve has an opening portion for receiving the connecting portion side and the tubular portion press-fit connection, and the other side of the sealing rubber sleeve is used for being fixed to the air outlet of the dirt suction fan.

The utility model discloses the third aspect provides a cleaning device, including the second aspect muffler subassembly of airing exhaust.

The utility model discloses an in some embodiments, the muffler of airing exhaust is located cleaning equipment's middle part, and arrange in on cleaning equipment's the chassis, wherein, wear to be equipped with the blast pipe the one end orientation of casing the chassis, set up on the chassis with the through structure that the end of giving vent to anger of blast pipe corresponds, so that follow the blast pipe combustion gas flow is followed the through structure on chassis discharges extremely cleaning equipment is outside.

Advantageous effects

The utility model provides an air exhaust silencer reduces the air flow noise through following arrangement:

(1) Three expansion chambers are arranged to form a resistant silencing structure to reduce airflow noise;

(2) A first through hole is formed in a partition plate used for forming the cavity, and airflow noise is reduced by the through hole based on the principle of micropore silencing. Meanwhile, the first through hole can reduce the air exhaust resistance of the air flow in the shell, and the large resistance can adversely affect the air intake and the vacuum degree of the sewage suction fan due to the fact that the sewage suction fan is particularly sensitive to the air exhaust resistance. Therefore, the first through hole is formed in the partition plate, so that the air exhaust resistance can be effectively reduced, and the pollution suction effect of the whole vehicle is prevented from being influenced.

(3) The air outlet end of the air inlet pipe is positioned in the third chamber, the air inlet end of the air outlet pipe is positioned in the first chamber, and the stroke of air flow in the air exhaust silencer is increased, so that the sound energy of air flow noise is reduced, and the noise reduction effect is achieved;

(4) A resistive absorber layer is disposed in the second chamber to absorb airflow noise.

Therefore, the utility model provides an air exhaust silencer is through combining above-mentioned characteristic organically together, has formed the compound muffler of pluralism for the air current noise is through the reflection of three cavity, consumption and through multiple porous structure's of second cavity amortization, absorption, can effectively reduce the noise of soil pick-up fan during operation.

Drawings

Fig. 1 is an exploded schematic view of an exhaust silencer according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of an exhaust silencer assembly according to an embodiment of the present invention;

FIG. 3 is a schematic view of an arrangement of an exhaust silencer assembly in a cleaning device according to an embodiment of the present invention;

fig. 4 is an exploded view of the exhaust silencer assembly according to the embodiment of the present invention when the waste water tank is turned over.

Detailed Description

In order to clearly understand the technical solutions, purposes and effects of the present invention, the following description of the embodiments of the present invention will be given with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present invention provides an exhaust silencer for a dirt suction fan of a cleaning device, including a casing 1, wherein an air inlet pipe 2 and an exhaust pipe 3 are respectively arranged at two opposite ends of the casing 1; the internal space of the casing 1 is divided into a first chamber 51, a second chamber 52 and a third chamber 53 for resistant sound attenuation by a first partition plate 41 and a second partition plate 42 in sequence along the direction from the air inlet pipe 2 to the air outlet pipe 3, the first partition plate 41 and the second partition plate 42 are respectively provided with a first through hole 43 which is communicated with the adjacent chambers and can attenuate sound and reduce air exhaust resistance,

the air outlet end of the air inlet pipe 2 is positioned in the third chamber 53, and the air inlet end of the air outlet pipe 3 is positioned in the first chamber 51, so that the stroke of air flow in the air exhaust silencer is increased, and the sound energy of air flow noise is reduced;

the second chamber 52 is provided with an air duct 6 communicating the first chamber 51 and the third chamber 53, the wall of the air duct 6 is provided with a second through hole 61 for silencing the noise of the air flow passing through the air duct 6,

in the second chamber 52, a first resistive acoustic absorber layer 7 is formed at the outer peripheries of the intake duct, the exhaust duct, and the air duct therein to absorb airflow noise.

The embodiment of the utility model provides a muffler of airing exhaust reduces the air current noise through following arrangement:

(1) By providing three expanding chambers (the first chamber 51, the second chamber 52, and the third chamber 53), the reactive noise reduction structure is formed to reduce the airflow noise;

(2) The partition plate for forming the chamber is provided with a first through hole 43, and the through hole reduces airflow noise based on the principle of micropore silencing. Meanwhile, the first through hole 43 of the partition board can reduce the air exhaust resistance of the air flow in the shell, and the sewage suction fan is particularly sensitive to the air exhaust resistance, so that the resistance greatly influences the air intake and the vacuum degree of the sewage suction fan. Therefore, the first through hole 43 is arranged on the partition board, so that the air exhaust resistance can be effectively reduced, and the pollution suction effect of the whole vehicle is prevented from being influenced.

(3) The air outlet end of the air inlet pipe 2 is positioned in the third chamber 53, and the air inlet end of the air outlet pipe 3 is positioned in the first chamber 51, so that the stroke of air flow in the air exhaust silencer is increased, the sound energy of air flow noise is reduced, and the noise reduction effect is achieved;

(4) The resistive sound absorbing material layer 7 is provided in the second chamber 52 to absorb airflow noise.

Therefore, the utility model provides an exhaust silencer is through combining above-mentioned characteristic organically together, has formed the compound muffler of pluralism including resistance amortization structure, hindering nature amortization structure, aperture amortization structure for the air noise passes through the reflection of three cavity, consumes and the amortization of second cavity, absorbs, finally reaches noise reduction.

In some embodiments of the present invention, the housing 1 is cylindrical, and has a top plate 11 and a bottom plate 12 at both ends. The air outlet end of the air inlet pipe 2 can enter the housing 1 from the top plate 11, and can stay in the third chamber 53 after passing through the first chamber 51 and the second chamber 52, and the air inlet end of the air inlet pipe 2 can protrude out of the housing 1. Correspondingly, the air inlet end of the exhaust pipe 3 can enter the casing 1 from the bottom plate 12, pass through the third chamber 53 and the second chamber 52 and stay in the first chamber 51, and the air outlet end of the exhaust pipe 3 is exposed to the outside of the casing 1. Preferably, to facilitate the installation of the exhaust muffler, the air outlet end of the exhaust pipe 3 is located on the same plane as the outer side surface of the bottom plate 12. In addition, the axial direction of both the intake pipe 2 and the exhaust pipe 3 may be parallel to the axial direction of the housing 1. In some embodiments of the present invention, a third through hole 21 is opened in a portion of the intake pipe 2 located in the second chamber 52 for silencing the airflow noise passing through the intake pipe 2. The third through hole 21 is opened in the portion of the intake pipe 2 located in the second chamber 52, whereby the silencing effect of the exhaust silencer can be further enhanced.

Preferably, in some embodiments of the present invention, the first through hole 43, the second through hole 61, and the third through hole 21 have a hole diameter of 3-5mm, and the interval between two adjacent holes is 3-5mm. The inventors of the present application have found that when the first through-hole 43, the second through-hole 61, and the third through-hole 21 are within the above-described ranges of the hole diameter and the hole interval, a better noise reduction effect can be obtained. In the present invention, the distance between two adjacent holes is the shortest distance between two adjacent holes.

In some embodiments of the present invention, the pipe wall of the inlet end of the inlet pipe 2 located outside the casing 1 is coated with the second resistive sound absorbing material layer 8. Set up the resistive sound absorbing material layer of second 8 here, can further strengthen the effect of making an uproar of falling of amortization on the one hand, on the other hand, when intake pipe 2 with directly or when being connected through the air outlet of other adapting unit and soil pick-up fan, can play better sealed effect.

In other embodiments of the present invention, the one end of the casing 1 with the exhaust pipe 3 is covered with the third resistive sound absorbing material layer 9. The third resistive sound-absorbing material layer 9 is arranged at the position, so that the effects of sound insulation and sound attenuation are achieved, and the silencer can achieve a good vibration-absorbing effect when being installed on the cleaning equipment in a mode that the bottom plate 12 of the shell 1 is placed on the chassis of the cleaning equipment.

In order to obtain better noise reduction effect, it is preferable that the wall of the air inlet end of the air inlet pipe 2 located outside the casing 1 is coated with a resistive sound absorbing material layer 8, while the outside of one end of the casing through which the air outlet pipe 3 is provided is coated with a resistive sound absorbing material layer 9.

The present invention provides a sound absorbing material that is a resistive sound absorbing material, which can be selected from a group of sound absorbing materials including, but not limited to, sound absorbing cotton, glass fiber cotton, and the like.

In other embodiments of the present invention, the inner diameters of the intake pipe 2, the exhaust pipe 3, and the air duct 6 are matched with the exhaust volume of the sewage suction fan. Therefore, the performance of the sewage suction fan is not influenced while the noise is effectively reduced. For example, the inlet pipe 2, the outlet pipe 3 and the gas duct 6 may have an inner diameter of 40-55mm, taking into account the performance parameters of a typical sewage suction fan used in the cleaning apparatus.

The utility model also provides a muffler subassembly of airing exhaust for cleaning device soil pick-up fan, as shown in FIG. 2, can include:

in the above-mentioned exhaust silencer, the air inlet is provided with a plurality of air inlets,

a muffler bracket 13 for fixing the exhaust muffler to the cleaning apparatus, and

and the sealing rubber sleeve 14 is used for sealing and connecting the exhaust silencer with an air outlet 15 of the sewage suction fan.

In particular embodiments, the muffler bracket may be secured to and retained by the front bracket 16 of the cleaning device, as shown in FIG. 3. More specifically, it may be fixed by a countersunk bolt.

In addition, in practical application, one end of the sealing rubber sleeve 14 can be fixed at the air outlet 15 of the sewage suction fan, and the other end of the sealing rubber sleeve 14 is connected with the exhaust silencer in a pressing connection mode. In this context, the sealant cover 14 is connected to the exhaust silencer, including the sealant cover 14 being directly connected to the exhaust silencer, and also including the sealant cover 14 being connected to the exhaust silencer through an additional connecting component, such as a subsequent silencer bracket 13. On one hand, good sealing performance between the sealing rubber sleeve and the exhaust silencer can be obtained by means of elastic deformation of the rubber sleeve during press connection; on the other hand, the press-fit connection also facilitates the connection and separation operation between the exhaust silencer and the air outlet 15, and facilitates the overhaul and the part replacement.

For example, for some cleaning apparatuses, as shown in fig. 4, the sewage tank 18 and the sewage suction fan are provided in the upper portion of the cleaning apparatus, and the exhaust silencer is provided in the lower portion of the cleaning apparatus, and the upper portion of the cleaning apparatus can be turned up with respect to the lower portion (i.e., the state in fig. 4). When the upper portion of the cleaning apparatus with the sewage tank is turned over for the purpose of, for example, interior inspection, it is necessary to separate the suction fan from the discharge muffler. Because the sealing rubber sleeve 14 is in press fit connection with the air inlet pipe 2 of the exhaust silencer, the separation operation is very convenient. When the maintenance process is completed, the upper and lower parts of the cleaning device are closed, and at this time, the resealing connection of the sealing rubber 14 to the exhaust silencer can be easily achieved also under the pressure of the upper part of the cleaning device.

The utility model discloses in, sealed gum cover 14 will air exhaust 15 sealing connection of air outlet of muffler and soil pick-up fan, can include sealed gum cover 14 the intake pipe of the muffler of will airing exhaust and 15 direct sealing connection of air outlet of soil pick-up fan, also can include sealed gum cover 14 the intake pipe of the muffler of will airing exhaust and 15 indirect sealing connection of air outlet of soil pick-up fan, the indirect sealing connection of saying indicates that the intake pipe of the muffler of airing exhaust passes through other connecting piece, for example muffler support 13 below is connected with the air outlet 15 of soil pick-up fan.

In some embodiments of the present invention, as shown in fig. 2, the muffler bracket 13 includes:

a tubular part 131 for close fitting over the air intake end of the air intake pipe 2 of the exhaust silencer, and

a connecting portion 132 for fixed connection with the cleaning device, the connecting portion 132 being located at one end of the tubular portion 131 and extending transversely to the axial direction of the tubular portion 131. The attachment portion 132 may have a through hole for attachment to facilitate the passage of a bolt to attach it to the front bracket 16 of the cleaning device.

In some embodiments of the present invention, one side of the sealant sleeve 14 has an expanding portion 141 for being in sealing contact with the tubular portion 131 from the connecting portion 132 side, and the other side of the sealant sleeve 14 is used for being fixed to the air outlet of the dirt suction fan. Form flaring portion 141 through the one side with sealed gum cover 14, utilize the elastic deformation that sealed gum cover 14 has, when sealed gum cover 14 passes through flaring portion 141 crimping in connecting portion 132 side, just can obtain good sealing characteristic, this kind of pressfitting is sealed simultaneously and is very convenient separates the air outlet of sewage suction fan with connecting portion 132, has further promoted the convenience of operation.

The utility model also provides a cleaning device, including aforementioned silencer subassembly of airing exhaust.

In some embodiments of the present invention, as shown in fig. 3 to 4, the exhaust silencer is located in the middle of the cleaning device and is disposed on the chassis of the cleaning device, wherein the one end of the housing 1 with the exhaust pipe 3 is facing the chassis, and the through structure corresponding to the air outlet end of the exhaust pipe 3 is disposed on the chassis, so that the air flow discharged from the exhaust pipe 3 is discharged to the outside of the cleaning device from the through structure on the chassis.

In some embodiments, a chassis bracket 17 may be positioned on the chassis to support the exhaust silencer. Arrange the muffler of airing exhaust in cleaning device's middle part, can effectively utilize the inside arrangement space of equipment to arrange the air outlet of blast pipe 3 in cleaning device's bottom, neither influence internal plant, make things convenient for the dismouting to change and do not influence whole car outward appearance again simultaneously.

The cleaning equipment of the utility model can be any equipment with cleaning and washing functions, for example, hand-push type, driving type and self-propelled ground washing vehicle/ground washing machine, sanitation vehicle, cleaning machine and other equipment; or a ground washing vehicle/ground washing machine, a ground washing robot, an environmental sanitation vehicle, a cleaning machine and other equipment which are realized by utilizing an automatic driving technology.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted equally without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. An exhaust silencer for a sewage suction fan of cleaning equipment comprises a shell, wherein an air inlet pipe and an exhaust pipe are respectively arranged at two opposite ends of the shell in a penetrating manner; it is characterized in that the preparation method is characterized in that,

the inner space of the shell is sequentially divided into a first chamber, a second chamber and a third chamber for resistant noise reduction by a first partition plate and a second partition plate along the direction from the air inlet pipe to the exhaust pipe, the first partition plate and the second partition plate are respectively provided with a first through hole which is communicated with the adjacent chambers and can reduce noise and exhaust resistance,

2. The exhaust silencer of claim 1, wherein a portion of the inlet duct located in the second chamber is provided with a third through hole for silencing airflow noise passing through the inlet duct.

3. The exhaust silencer according to claim 2, wherein the first through hole, the second through hole and the third through hole have a hole diameter of 3-5mm, and the interval between two adjacent holes is 3-5mm.

4. The exhaust silencer of any of claims 1 to 3 wherein a wall of an air inlet end of the air inlet pipe outside the casing is coated with a second resistive sound absorbing material layer,

and/or

5. The exhaust silencer of any of claims 1 to 3, wherein the inner diameters of the inlet duct, the exhaust duct, and the air duct match an exhaust volume of the dirt suction fan.

6. An exhaust silencer assembly for a cleaning device dirt suction fan, comprising:

the exhaust silencer of any of claims 1 to 5,

a muffler bracket for fixing the exhaust muffler to the cleaning apparatus, and

7. The exhaust silencer assembly of claim 6, wherein the silencer mount includes:

8. The exhaust silencer assembly of claim 7, wherein one side of the sealing rubber sleeve has a flared portion for press-fitting connection with the tubular portion from the side of the connecting portion, and the other side of the sealing rubber sleeve is for fixing to the air outlet of the dirt suction fan.

9. A cleaning device comprising the exhaust silencer assembly of any of claims 6-8.

10. The cleaning apparatus as claimed in claim 9, wherein the exhaust silencer is located at a middle portion of the cleaning apparatus and is disposed on a chassis of the cleaning apparatus, wherein one end of the housing through which the exhaust pipe is disposed faces the chassis, and a through structure corresponding to an air outlet end of the exhaust pipe is opened on the chassis, so that the air flow exhausted from the exhaust pipe is exhausted from the through structure of the chassis to an outside of the cleaning apparatus.