CN221879737U - A ventilation device for dredging a culvert - Google Patents

Abstract

The utility model provides a ventilation device for dredging an underdrain, which comprises: the top of the box body is provided with an exhaust hole corresponding to the exhaust fan, and the side wall of the box body is provided with an air inlet corresponding to the filtering component; the exhaust fan is positioned at the top of the box body and fixedly connected with the box body, and the air inlet end of the exhaust fan is communicated with the box body through an exhaust hole; the filter assembly is detachably connected to the inner side of the box body; the inside of the box body is fixedly provided with an isolation net, and the isolation net divides the inside of the box body into a fresh air cavity and a filter cavity. The utility model has the beneficial effects that: the exhaust fan is used for exhausting gas in the box body, so that the air flowing function in the underdrain is realized, the filter assembly is arranged at the bottom of the box body, the effect of purifying air in the underdrain is achieved, the air inlet pipe at the top of the box body is matched with the external blower, fresh air is provided for the inside of the underdrain, and the circulation function of air in the underdrain and external air is realized.

Description

A ventilation device for dredging a culvert

Technical Field

The utility model belongs to the field of ditch clearing, in particular to a ventilation device for ditch clearing.

Background Art

With the acceleration of urbanization, urban drainage systems are facing increasing pressure. There are abandoned mixed rainwater and sewage culverts in towns and cities. Cleaning up these abandoned culverts and reusing them for rainwater and sewage diversion can quickly solve the urban drainage pressure with limited funds and less construction impact.

During the dredging process of the culvert, workers need to enter the culvert to perform the dredging operation. However, the air inside the culvert is difficult to circulate, which makes the working environment inside the culvert poor, resulting in the inability of workers to perform the dredging work in a long-term and efficient manner.

In the prior art, fans are often installed at the inlet and outlet of the culvert to provide flowing air inside the culvert, but this technology has poor effect and cannot effectively improve the working environment inside the culvert.

Utility Model Content

In view of this, the utility model aims to provide a ventilation device for dredging a culvert, in order to solve at least one of the above-mentioned technical problems.

In order to achieve the above object, the technical solution of the utility model is implemented as follows:

A ventilation device for dredging a culvert, comprising:

A box body, wherein the top of the box body is provided with an exhaust hole corresponding to the exhaust fan, and the side wall of the box body is provided with an air inlet hole corresponding to the filter assembly;

An exhaust fan, the exhaust fan is located at the top of the box and is fixedly connected to the box, and the air inlet end of the exhaust fan is connected to the box through the exhaust hole;

A filter assembly, the filter assembly being detachably connected to the inner side of the box;

An isolation net is fixedly arranged inside the box body, and the isolation net separates the interior of the box body into a fresh air chamber and a filter chamber.

Furthermore, the filter assembly is located inside the filter cavity of the box;

The air inlet holes are all opened on the outer side wall of the filter cavity of the box body, and the air inlet holes are opened obliquely upward along the air flow direction.

Furthermore, an air intake pipe is fixedly provided on the outer side wall of the box body, one end of the air intake pipe away from the box body is connected to the external air intake passage, and the other end is connected to the fresh air cavity of the box body.

Furthermore, a check valve is fixedly provided in the air intake pipe, one end of the check valve with a valve disc is located inside the box body, and the other end of the check valve is located inside the air intake pipe, and a filter screen is fixedly provided.

Furthermore, the filter assembly includes a bottom plate and a plurality of filter plates, and the plurality of filter plates are detachably connected to the end surface of the bottom plate adjacent to the box body;

The bottom of the box body is provided with an opening, and the bottom plate blocks the opening at the bottom of the box body.

Furthermore, a fixing plate is fixedly provided on the upper end surface of the bottom plate, and the side wall of the fixing plate is in contact with the inner side wall of the box body;

A plurality of clamping blocks are fixedly arranged on the end surface of the fixing plate and the lower end surface of the isolation net, and each of the clamping blocks has two L-shaped grooves;

Two filter plates are respectively placed in the two ends of each L-shaped groove, and the two filter plates are fitted together.

Further, the filter plate includes a frame and a mesh;

The frame is a rectangular structural member, the mesh is wrapped around the outside of the frame, and a filling cavity for filling the filter material is formed between the frame and the mesh;

There are two types of filter materials, namely filter cotton and activated carbon. The filter plate filled with filter cotton is located on the outside, and the filter plate filled with activated carbon is located on the inside.

Furthermore, the plurality of reinforcing blocks are distributed on the four corners of the fixing plate and the isolation plate.

Furthermore, a plurality of universal wheels are fixedly provided on the lower end surface of the base plate.

Furthermore, a protective net is fixedly provided at one end of the exhaust fan away from the box body.

Compared with the prior art, the ventilation device for dredging a culvert described in the utility model has the following features:

Beneficial effects:

An exhaust fan is used to expel the gas in the box, thereby realizing the air flow function in the dark channel. A filter component is provided at the bottom of the box to purify the air in the dark channel. The air intake pipe at the top of the box cooperates with the external blower to provide fresh air to the inside of the dark channel, thereby realizing the circulation function of the air inside the dark channel and the external air.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

FIG1 is a schematic diagram of the overall structure of a ventilation device for dredging a culvert according to an embodiment of the present utility model;

FIG2 is a schematic diagram of the cross-sectional structure of a ventilation device for desilting a culvert according to an embodiment of the present utility model;

FIG3 is a schematic diagram of the box structure according to an embodiment of the utility model;

FIG4 is a schematic diagram of the structure of a check valve according to an embodiment of the utility model;

FIG5 is a schematic diagram of the bottom plate structure according to an embodiment of the utility model;

FIG6 is a schematic diagram of the structure of point A in FIG5 according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram of the exhaust fan structure according to an embodiment of the present utility model.

Description of reference numerals:

1. Box body; 101. Exhaust hole; 102. Air inlet hole; 103. Isolation net; 104. Air inlet pipe; 2. Exhaust fan; 201. Protective net; 3. Check valve; 301. Filter; 4. Bottom plate; 401. Fixed plate; 402. Clamping block; 403. L-shaped groove; 5. Universal wheel.

DETAILED DESCRIPTION

It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

A ventilation device for dredging a culvert, comprising:

A box body 1, wherein the top of the box body 1 is provided with an exhaust hole 101 corresponding to the exhaust fan 2, and the side wall of the box body 1 is provided with an air inlet hole 102 corresponding to the filter assembly;

An exhaust fan 2, the exhaust fan 2 is located at the top of the box body 1 and is fixedly connected to the box body 1, and an air inlet end of the exhaust fan 2 is connected to the box body 1 through an exhaust hole 101;

A filter assembly, the filter assembly is detachably connected to the inner side of the box body 1;

An isolation net 103 is fixedly arranged inside the box body 1 , and the isolation net 103 separates the interior of the box body 1 into a fresh air chamber and a filter chamber.

The filter assembly is located inside the filter cavity of the housing 1 ; the air inlet holes 102 are all opened on the outer wall of the filter cavity of the housing 1 , and the air inlet holes 102 are opened obliquely upward along the air flow direction.

Prevent foreign matter from clogging the air inlet 102 under the influence of negative pressure.

An air intake pipe 104 is fixedly disposed on the outer wall of the box body 1 . One end of the air intake pipe 104 away from the box body 1 is connected to an external air intake passage, and the other end is connected to a fresh air cavity of the box body 1 .

The air inlet pipe 104 is fixedly provided with a check valve 3 , one end of the check valve 3 having a valve flap is located inside the housing 1 , and the other end of the check valve 3 is located inside the air inlet pipe 104 and is fixedly provided with a filter screen 301 .

The filter 301 prevents the blower from blowing foreign objects into the fresh air chamber to damage the exhaust fan 2. The check valve 3 ensures that when the air pressure inside the culvert is high or the blower is accidentally set to the suction state, the air inside the culvert will not be sucked out of the culvert, resulting in a reduction in the air inside the culvert and affecting the staff.

The filter assembly includes a bottom plate 4 and multiple filter plates, and the multiple filter plates are detachably connected to the end surface of the bottom plate 4 adjacent to the box body 1; an opening is provided at the bottom of the box body 1, and the bottom plate 4 blocks the opening at the bottom of the box body 1 to facilitate the removal of the filter assembly.

A fixing plate 401 is fixedly arranged on the upper end surface of the bottom plate 4, and the side wall of the fixing plate 401 is in contact with the inner wall of the box body 1; a plurality of clamping blocks 402 are fixedly arranged on the end surface of the fixing plate 401 and the lower end surface of the isolation net 103, and each of the clamping blocks 402 has two L-shaped grooves 403; two filter plates are placed at both ends of each of the L-shaped grooves 403, and the two filter plates are in contact with each other.

The L-shaped groove 403 is convenient for installing the filter plate, and the multiple filter plates form a sealing structure to prevent the old air in the culvert from flowing through the filter plate into the fresh air chamber.

The filter plate includes a frame and a mesh; the frame is a rectangular structural member, the mesh is wrapped around the outside of the frame, and a filling cavity for filling a filter is formed between the frame and the mesh; the filter material includes two types, filter cotton and activated carbon, the filter plate filled with filter cotton is located on the outside, and the filter plate filled with activated carbon is located on the inside.

The filter plate filled with filter cotton is located on the outside for dust removal, and the filter plate filled with activated carbon is located on the inside for deodorization.

The plurality of support blocks are distributed on the four corners of the fixing plate 401 and the isolation plate for easy installation.

A plurality of universal wheels 5 are fixedly disposed on the lower end surface of the bottom plate 4 to facilitate the movement of the device.

A protective net 201 is fixedly arranged at one end of the exhaust fan 2 away from the housing 1 to prevent falling objects from damaging the exhaust fan 2 .

Working process:

The staff pushes the ventilation device for dredging the underground channel into the underground channel, and uses a hose to connect the blower outside the underground channel with the air inlet pipe 104. At this time, the fresh air outside the underground channel flows into the hose through the blower, and flows into the fresh air chamber in the box body 1 through the air inlet pipe 104;

Then the staff turns on the exhaust fan 2, and fresh air is blown out of the device under the action of the exhaust fan 2, so that fresh air continuously flows into the inner part of the culvert, thereby ensuring the ventilation environment inside the culvert;

At the same time, under the influence of the negative pressure at the lower end of the exhaust fan 2, the old air in the dark channel is sucked into the filter chamber through the air inlet 102 on the side wall of the box body 1. The old air is dusted and deodorized under the action of the two layers of filter plates, and the old air is purified;

The purified old air flows into the fresh air cavity through the isolation net 103 and is blown out through the exhaust fan 2, thereby purifying the working environment in the dark channel.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An underdrain dredging ventilation device, comprising:

The air purifier comprises a box body (1), wherein the top of the box body (1) is provided with an exhaust hole (101) corresponding to an exhaust fan (2), and the side wall of the box body (1) is provided with an air inlet hole (102) corresponding to a filtering component;

The exhaust fan (2) is positioned at the top of the box body (1) and is fixedly connected with the box body (1), and the air inlet end of the exhaust fan (2) is communicated with the box body (1) through an exhaust hole (101);

The filter assembly is detachably connected to the inner side of the box body (1);

The inside of the box body (1) is fixedly provided with an isolation net (103), and the isolation net (103) divides the inside of the box body (1) into a fresh air cavity and a filter cavity.

2. The underdrain dredging ventilation device according to claim 1, wherein:

The filter component is positioned at the inner side of the filter cavity of the box body (1);

The air inlets (102) are all arranged on the outer side wall of the filter cavity of the box body (1), and the air inlets (102) are obliquely upwards arranged along the air flow direction.

3. The underdrain dredging ventilation device according to claim 1, wherein:

An air inlet pipe (104) is fixedly arranged on the outer side wall of the box body (1), one end, far away from the box body (1), of the air inlet pipe (104) is communicated with an external air inlet passage, and the other end of the air inlet pipe is communicated with a fresh air cavity of the box body (1).

4. A ventilation device for dredging underdrain according to claim 3, wherein:

the novel air inlet pipe is characterized in that a check valve (3) is fixedly arranged in the air inlet pipe (104), one end, provided with a valve clack, of the check valve (3) is located at the inner side of the box body (1), and the other end of the check valve (3) is located at the inner side of the air inlet pipe (104) and fixedly provided with a filter screen (301).

5. The underdrain dredging ventilation device according to claim 1, wherein:

The filter assembly comprises a bottom plate (4) and a plurality of filter plates, and the filter plates are detachably connected to the end face, close to the box body (1), of the bottom plate (4);

The bottom of the box body (1) is provided with an opening, and the bottom plate (4) is used for plugging the opening at the bottom of the box body (1).

6. The underdrain dredging ventilation device according to claim 5, wherein:

A fixing plate (401) is fixedly arranged on the upper end surface of the bottom plate (4), and the side wall of the fixing plate (401) is attached to the inner side wall of the box body (1);

A plurality of clamping blocks (402) are fixedly arranged on the end face of the fixing plate (401) and the lower end face of the isolation net (103), and two L-shaped grooves (403) are formed in each clamping block (402);

Two filter plates are respectively placed in the two ends of each L-shaped groove (403), and the two filter plates are attached.

7. The underdrain dredging ventilation device according to claim 5, wherein:

the filter plate comprises a frame and mesh cloth;

the frame is a rectangular structural member, the mesh cloth is wrapped on the outer side of the frame, and a filling cavity for filling filter materials is formed between the frame and the mesh cloth;

The filter material is two kinds of filter cotton and active carbon respectively, and the filter plate filled with the filter cotton is located the outside, and the filter plate filled with the active carbon is located the inboard.

8. The underdrain dredging ventilation device according to claim 6, wherein:

The clamping blocks (402) are distributed on the four corners of the fixed plate (401) and the isolation plate.

9. The underdrain dredging ventilation device according to claim 5, wherein:

The lower end face of the bottom plate (4) is fixedly provided with a plurality of universal wheels (5).

10. The underdrain dredging ventilation device according to claim 1, wherein:

And a protection net (201) is fixedly arranged at one end, far away from the box body (1), of the exhaust fan (2).