Limited space ventilation fan equipment

Abstract

The utility model provides limited space ventilation fan equipment, relates to the field of limited space operation equipment, and solves the problems that an existing axial flow fan is incomplete in function, inconvenient to use and difficult to monitor and filter toxic and harmful gas. The equipment comprises a box body, a filtering assembly and a fan, an air inlet is formed in one side of the box body, an air outlet opposite to the air inlet is formed in the other side of the box body, and the air inlet and the air outlet are communicated through a pipeline arranged in the box body; the filter assembly and the fan are both installed in the box body and connected to a pipeline in the box body in series in the length direction of the box body, the filter assembly is installed close to the air inlet side, and the fan is installed close to the air outlet side. An integrated industrial control screen is mounted on the side wall of the box body, and a first gas concentration sensor is further mounted on a pipeline between the air inlet and the filtering assembly; the device has the effects of gas monitoring, filtering and ventilation, is combined with the informatization technology, and is suitable for ventilation of limited space operation.

Description

Technical Field

[0001] The utility model relates to the field of confined space operation equipment, and is applied to in-ground sewage treatment operations. Specifically, it relates to a confined space ventilation fan device. Background Art

[0002] In industrial and trading enterprises, especially during the operation and maintenance of in-ground sewage treatment plants, confined space operations are an inevitable part. These spaces usually have the following characteristics: structurally enclosed or semi-enclosed, with limited air circulation, poor natural ventilation, and due to chemical reactions during sewage and sludge treatment, toxic and harmful gases such as hydrogen sulfide (H2S) and carbon monoxide (CO) are likely to accumulate, posing a significant safety threat to operating personnel.

[0003] Currently, the commonly used ventilation equipment in confined space operations is a common axial flow fan, whose main function is limited to providing forced air flow to displace the air in the space. However, this traditional fan has the following limitations:

[0004] 1. Direct pollutant discharge: The fan only discharges the air inside the confined space without any filtration treatment, resulting in the direct discharge of toxic and harmful gases to the external working area, causing secondary pollution and affecting the health of relevant staff and the surrounding environment.

[0005] 2. Lack of monitoring ability: Traditional ventilation fans do not have the function of real-time monitoring of the concentration of toxic and harmful gases in the confined space, and cannot accurately evaluate the ventilation effect and operation safety, increasing the operation risk.

[0006] 3. Poor flexibility: Traditional fans are designed clumsily and are inconvenient to install and arrange, especially in narrow or structurally complex confined spaces, which limits their applicability and efficiency.

[0007] 4. Non-adjustable air volume: The air volume of most traditional fans is fixed and cannot be dynamically adjusted according to the actual gas concentration in the confined space, resulting in low ventilation efficiency or energy waste. At the same time, it is also difficult to implement an intelligent control strategy.

[0008] In view of the above problems, the existing ventilation fans are unable to cope with complex confined space operations such as in-ground sewage treatment plants, and there is an urgent need for a new type of ventilation equipment that can overcome the above defects to improve operation safety and efficiency, and at the same time meet the requirements of environmental protection. Summary of the Utility Model

[0009] Based on the current situation in the background technology, the purpose of the present utility model is to solve the problems of the imperfect functions, inconvenient use, and difficulty in monitoring and filtering toxic and harmful gases of existing axial fans. Therefore, a ventilation fan device for limited spaces is proposed. Through the integrated design of the functional structure, the present utility model combines gas monitoring, filtering, and ventilation effects, is convenient for pushing, pulling, moving, and deploying in place, and with the support of information technology, is suitable for ventilation and air change in limited space operations.

[0010] The present utility model adopts the following technical solutions to achieve the purpose:

[0011] A ventilation fan device for limited spaces, the device includes a box body, a filtering component, and a fan; an air inlet is provided on one side of the box body, and an air outlet opposite to the air inlet is provided on the other side of the box body. The air inlet and the air outlet are connected through a pipeline arranged inside the box body; both the filtering component and the fan are installed inside the box body, and the filtering component and the fan are connected in series on the pipeline inside the box body along the length direction of the box body. The filtering component is installed near the air inlet side, and the fan is installed near the air outlet side; the fan is used to provide the power for gas flow, so that the gas enters from the air inlet, moves along the pipeline, and passes through the filtering component and the fan in sequence and then is discharged from the air outlet.

[0012] Preferably, a plurality of walking wheels are provided at the bottom of the box body.

[0013] Further, an integrated industrial control screen is installed on the side wall of the box body where the air inlet or the air outlet is not provided, and a first gas concentration sensor is installed on the pipeline between the air inlet and the filtering component; the integrated industrial control screen is configured with a controller, and the controller is connected to the first gas concentration sensor.

[0014] Preferably, the fan is a variable-frequency fan, and the variable-frequency fan is configured with a wiring control box, and the controller is connected to the wiring control box.

[0015] Preferably, a second gas concentration sensor is installed on the pipeline between the filtering component and the fan, and the controller is connected to the second gas concentration sensor.

[0016] Further, the filtering component includes a plurality of filtering boxes arranged in the gas flow direction of the pipeline, and each filtering box is filled with filtering filler for filtering toxic and harmful gases.

[0017] In summary, due to the adoption of the present technical solution, the beneficial effects of the present utility model are as follows:

[0018] The device of the present utility model realizes "ready to use and ready to deploy" under the integrated structure, reduces the physical labor in the handling and arrangement process of traditional single fans, makes the deployment of ventilation equipment faster and more efficient, especially the rapid response ability in emergency situations.

[0019] The filtering component integrated in this utility model can effectively capture and process toxic and harmful gases discharged from a confined space, ensure that the discharged gases meet safety standards, prevent secondary pollution of the air in areas such as external workshops, and protect relevant operators and the surrounding environment from harmful substances.

[0020] The gas concentration sensor carried by this utility model works in coordination with the controller, can collect the concentration data of toxic and harmful gases in the confined space in real time, and can set a warning threshold to timely remind the operator to pay attention to the change of gas concentration. When necessary, replace the filtering component, etc., to ensure continuous and effective protection measures.

[0021] The design of multiple filtering boxes of the filtering component is convenient for maintenance and replacement, can reduce the equipment downtime, and improve the overall availability. At the same time, according to different use environments and types of toxic and harmful gases, the corresponding filtering boxes can be flexibly selected to enhance the adaptability and functionality of the equipment.

[0022] Based on the settings of the controller and existing mature algorithms, the air volume of the fan can be dynamically adjusted according to the monitored gas concentration data, which not only maximizes the ventilation efficiency but also avoids unnecessary energy consumption, reflecting the environmental protection concept of energy conservation and emission reduction. Description of the Drawings

[0023] Figure 1 It is a three-dimensional schematic diagram of the internal structure of the fan equipment of this utility model;

[0024] Figure 2 It is a three-dimensional schematic diagram of the fan equipment of this utility model;

[0025] Figure 3 It is a side view of the internal structure of the fan equipment of this utility model;

[0026] Figure 4 It is a top view of the fan equipment of this utility model.

[0027] The meanings represented by the marks in the drawings are specifically as follows:

[0028] 1 - Box body, 2 - Filtering component, 3 - Fan, 4 - Air inlet, 5 - Air outlet, 6 - Walking wheel, 7 - Push-pull handle, 8 - Integrated industrial control screen, 9 - First gas concentration sensor, 10 - Wiring control box, 11 - Second gas concentration sensor, 12 - Hinge, 13 - Fastener, 14 - Filtering box, 15 - Filtering cover plate. Detailed Embodiment

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0031] Embodiment 1

[0032] A ventilation fan device for confined spaces, for which the internal schematic and Figure 1 the external shape of Figure 2 can be viewed synchronously. The device includes a box body 1, a filtering component 2, and a fan 3; an air inlet 4 is provided on one side of the box body 1, and an air outlet 5 is provided on the other side of the box body 1 opposite to the air inlet 4. The air inlet 4 and the air outlet 5 are connected through a pipeline arranged inside the box body; both the filtering component 2 and the fan 3 are installed inside the box body 1, and the filtering component 2 and the fan 3 are connected in series along the length direction of the box body 1 on the pipeline inside the box body 1. The filtering component 2 is installed on the side close to the air inlet 4, and the fan 3 is installed on the side close to the air outlet 5; the fan 3 is used to provide the power for gas flow, so that the gas enters from the air inlet 4, moves along the pipeline, passes through the filtering component 2 and the fan 3 in sequence, and then is discharged from the air outlet 5.

[0033] In this embodiment, the filtering component 2 is a toxic and harmful gas filtering device of the equipment, which can filter the toxic and harmful gas extracted from the confined space to avoid polluting the air inside the factory building with the toxic and harmful gas.

[0034] Embodiment 2

[0035] Based on Embodiment 1, as Figure 2 shown, a plurality of walking wheels 6 are provided at the bottom of the box body 1. The walking wheels 6 are preferably arranged at the four corners of the bottom of the box body 1 and can be universal wheels.

[0036] In this embodiment, as Figures 1 to 4 shown, push-pull handles 7 are provided on the side walls of the box body 1 above the air inlet 4 and the air outlet 5.

[0037] With the above-mentioned walking wheels 6 and push-pull handles 7 added to the whole set of equipment, it can be arranged portably according to the usage scenario.

[0038] Example 3

[0039] Based on any of the above embodiments, as Figure 2 shown, an integrated industrial control screen 8 is installed on the side wall of the box body 1 without an air inlet 4 or an air outlet 5, and a first gas concentration sensor 9 is installed on the pipeline between the air inlet 4 and the filter assembly 2; the integrated industrial control screen 8 is configured with a controller (not shown in the figure), and the controller is connected to the first gas concentration sensor 9.

[0040] In this embodiment, as Figure 1 、 Figure 3 shown, the fan 3 is a variable-frequency fan, and the variable-frequency fan is configured with a wiring control box 10, and the controller is connected to the wiring control box 10.

[0041] As a preference of this embodiment, as Figure 1 、 Figure 3 shown, a second gas concentration sensor 11 is installed on the pipeline between the filter assembly 2 and the fan 3, and the controller is connected to the second gas concentration sensor 11.

[0042] In addition, for the convenience of checking the wiring and the inside of the equipment, the side wall of the box body 1 where the integrated industrial control screen 8 is located is rotatably connected to the bottom of the box body 1 through a hinge 12, and a buckle 13 is further provided at a position close to the top of the box body 1 on the side wall of the box body 1 where the integrated industrial control screen 8 is located, and the buckle 13 is used to fasten and fix the side wall of the box body 1 where the integrated industrial control screen 8 is located to the top of the box body 1.

[0043] By integrating the fan 3, the filter assembly 2, two types of gas concentration sensors, the integrated industrial control screen 8 and the controller, etc. into a box body 1 and matching with the traveling wheels 6, the fan equipment is convenient to arrange during use.

[0044] This embodiment can detect the concentration data of toxic and harmful gases through the mounted gas concentration sensors, and at the same time, it can also use the difference in gas concentration data before and after the filter assembly 2 to evaluate the filtering effect of the filter assembly 2, and remind the operator to replace the relevant components of the filter assembly 2 in time to maintain the filtering effect.

[0045] The integrated industrial control screen 8 and its configured controller can collect the gas concentration data of toxic and harmful gases in real time, and this data can set an early warning value as a signal to remind the operator to replace the relevant components of the filter assembly 2. The fan 3 carried by the equipment is a variable-frequency fan, and the frequency can be adjusted through the controller, and then the air volume of the fan 3 can be regulated. The integrated industrial control screen 8 can also display the detected gas concentration data in real time, which can reflect the gas pollution situation inside the confined space or the size of the concentration of toxic and harmful gases.

[0046] Example 4

[0047] Based on any of the above embodiments, asFigure 4 As shown, the filtering component 2 includes a plurality of filtering boxes 14 arranged along the gas flow direction of the pipeline, and each filtering box 14 is filled with filtering packing for filtering toxic and harmful gases.

[0048] Preferably in this embodiment, the filtering component 2 further includes a square filtering frame. Each filtering box 14 is a square filtering box, and the square filtering box is inserted vertically into the square filtering frame; a filtering replacement opening for extracting and replacing the filtering box 14 is further provided at the position corresponding to the filtering component 2 at the top of the box body 1, and the filtering replacement opening is opened and closed by a filtering cover plate 15. This structural design facilitates the replacement of the filtering box 14, making the filtering component 2 as a whole an integrated filter box design with replaceable filtering boxes 14.

[0049] The filtering box 14 of this embodiment can filter the toxic and harmful gases generated in a limited space, and different filtering boxes 14 can be installed according to the use environment (different types of toxic and harmful gases).

[0050] In this embodiment, both the air inlet 4 and the air outlet 5 are conical structure interfaces. The larger end of the conical structure interface is convenient for connecting an external ventilation hose, so that relevant adjustments can be made according to actual use requirements.

Claims

1. A confined space ventilation fan device, characterized in that: The device comprises a housing (1), a filter assembly (2) and a fan (3); an air inlet (4) is arranged on one side of the housing (1), and an air outlet (5) is arranged on the other side of the housing (1) opposite to the air inlet (4); the air inlet (4) and the air outlet (5) are connected via a pipeline arranged inside the housing (1); the filter assembly (2) and the fan (3) are both installed inside the housing (1), and the filter assembly (2) and the fan (3) are connected in series to the pipeline inside the housing (1) along the length direction of the housing (1), the filter assembly (2) is installed close to the air inlet (4), and the fan (3) is installed close to the air outlet (5); the fan (3) is used to provide power for gas flow, so that the gas enters from the air inlet (4), moves along the pipeline and passes through the filter assembly (2) and the fan (3) in sequence before being discharged from the air outlet (5); The filter assembly (2) comprises a plurality of filter boxes (14) arranged along the gas flow direction of the pipeline, and each filter box (14) is filled with a filter filler for filtering toxic and harmful gases.

2. The limited space ventilation fan device according to claim 1, characterized in that: A plurality of running wheels (6) are arranged at the bottom of the box body (1).

3. The limited space ventilation fan device according to claim 2, characterized in that: Push-pull handles (7) are provided on the side walls of the box body (1) above the air inlet (4) and the air outlet (5).

4. The limited space ventilation fan device according to claim 1, characterized in that: An integrated industrial control panel (8) is installed on a side wall of a box body (1) where no air inlet (4) or air outlet (5) is provided, and a first gas concentration sensor (9) is installed on a pipeline between the air inlet (4) and the filter assembly (2); the integrated industrial control panel (8) is provided with a controller, and the controller is connected to the first gas concentration sensor (9).

5. The limited space ventilation fan device according to claim 4, characterized in that: The fan (3) is a variable frequency fan, which is equipped with a wiring control box (10), and the controller is connected to the wiring control box (10).

6. The limited space ventilation fan device according to claim 4, characterized in that: A second gas concentration sensor (11) is installed on the pipeline between the filter assembly (2) and the fan (3), and the controller is connected to the second gas concentration sensor (11).

7. The limited space ventilation fan device according to claim 4, characterized in that: The side wall of the box (1) where the integrated industrial control screen (8) is located is rotatably connected to the bottom of the box (1) via a hinge (12); a buckle (13) is also provided near the top of the box (1) on the side wall of the box (1) where the integrated industrial control screen (8) is located; the buckle (13) is used to buckle and fix the side wall of the box (1) where the integrated industrial control screen (8) is located to the top of the box (1).

8. The limited space ventilation fan device according to claim 1, characterized in that: The filter assembly (2) also includes a square filter frame, each filter box (14) is a square filter box, and the square filter box is inserted into the filter frame in a vertical direction; a filter replacement port for extracting and replacing the filter box (14) is also provided at a position on the top of the box body (1) corresponding to the filter assembly (2), and the filter replacement port is opened and closed by a filter cover plate (15).

9. The limited space ventilation fan device according to claim 1, characterized in that: The air inlet (4) and the air outlet (5) are both conical structure interfaces, and the larger end of the conical structure interface is connected to an external ventilation hose.

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