An isolation device for a subway environment control distribution box

Abstract

The utility model relates to a distribution box technical field, concretely relates to an isolation device for subway environment control distribution box. The utility model discloses the problem of low protection efficiency, incomplete drainage in the prior art. The utility model discloses the electric box body, gas flow passage, conical water collecting cavity, dust suction rotary disc, air extraction device and annular water storage part etc. form the airflow circulation from bottom to top through bottom air outlet, top air outlet and bottom air inlet, and the rotating dust suction part and dust suction disc cooperate to realize efficient dust filtration, and the conical water collecting cavity utilizes centrifugal force and flow guide groove to carry out water gas separation. It has the advantages of energy saving, convenient maintenance, high drainage dust suction efficiency, is suitable for being applied to the distribution facilities of subway station, tunnel section and underground pipe gallery widely, and guarantees the stable operation of electrical equipment.

Description

Technical Field

[0001] This utility model relates to the field of distribution box technology, specifically to an isolation device for a subway environmental control distribution box. Background Technology

[0002] As a crucial piece of equipment in rail transit systems, subway environmental control distribution boxes are constantly exposed to complex environments characterized by humidity and dust. Traditional distribution boxes often employ sealed protective structures, but these suffer from the following technical drawbacks:

[0003] Passive protection is inefficient: It relies solely on the outer shell of the enclosure to isolate dust and moisture, and cannot actively purify the internal air. This leads to the formation of condensation and dust accumulation inside the enclosure, causing corrosion of electrical components, short circuits, and other malfunctions.

[0004] High maintenance costs: Traditional protective devices require manual disassembly and cleaning periodically, and the filter materials are difficult to replace. In particular, frequent maintenance during subway operation can affect the reliability of the system.

[0005] Unreasonable airflow organization: Existing ventilation structures mostly adopt unidirectional airflow design, which cannot form effective air circulation, resulting in blind spots in protection;

[0006] Incomplete moisture treatment: When humid air enters the enclosure, it easily forms condensation inside, and the existing drainage structure cannot achieve automatic collection and discharge.

[0007] Currently, some technologies attempt to improve the protective effect by adding filtration devices, but problems still exist such as low filtration efficiency, easy jamming of rotating parts, and inability to automatically handle saturated moisture. For example, invention patent CN112838481A discloses an electricity metering distribution box, including a distribution box body, a door on one side of the outer wall of the distribution box body, a fan fixedly connected to the top inside the distribution box body, and a collection box fixedly connected to the bottom inside the distribution box body, with a grid plate on the top of the collection box. In this invention, after the distribution box body is installed, the fan is started. Part of the air blown by the fan is directed towards the air guide plate with a certain angle. Due to the arc-shaped top of the air guide plate, dust accumulation is reduced. At the same time, the airflow cools the various electricity meter bodies through the through holes in the air guide plate, increasing the air velocity on the surface of the electricity meter bodies. Another part of the airflow blows the dust-collecting fan blades, driving the rotating shaft and central shaft to rotate, thereby driving the spiral dust collection belt to rotate and collect dust. The device has a flexible structure, which increases the airflow velocity on the surface of the meter body, thereby effectively reducing the meter's operating temperature and greatly improving the cooling efficiency of the distribution box. Although a filter layer and exhaust fan are installed, the problem of efficiency decline after the adsorption material becomes saturated is not solved, and an effective moisture separation structure is lacking. Utility Model Content

[0008] The purpose of this invention is to overcome the problems of low protection efficiency and incomplete drainage in the prior art.

[0009] To achieve the above objectives, the technical approach adopted by this utility model to solve its technical problem is as follows:

[0010] For air circulation, an exhaust port and an extraction port are installed on one side of the distribution box, with the extraction port located below the exhaust port to form an internal air circulation channel. This aligns with the movement trajectory of dust and moisture, resulting in better dust removal and dehumidification. The extraction device ensures continuous airflow, improving the air exchange efficiency between the inside and outside of the box. An air intake at the bottom of the distribution box replenishes fresh air, further enhancing air exchange efficiency.

[0011] For dust separation, the rotating support plate is driven by an airflow-driven turbine and its surface is covered with a polytetrafluoroethylene microporous filter membrane, achieving 360° three-dimensional adsorption. The support plate's hollow frame is connected to the rotating shaft. When the air extraction device is activated, the rotating airflow drives the rotating dust-collecting part to rotate through the hollow frame, ensuring that the dust-collecting plate and dust-collecting fan blades are in full contact with the air. The rotation of the dust-collecting fan blades also drives the airflow upward, improving gas exchange efficiency.

[0012] For dehumidification, centrifugal force is used to throw moisture in the rotating airflow toward the cone wall, and the wave-shaped guide channel accelerates the moisture to slide down to the annular water storage section. The annular water storage section collects residual water droplets, preventing moisture from flowing back into the electrical box.

[0013] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows:

[0014] Design an isolation device for a subway environmental control distribution box, the specific scheme is as follows:

[0015] An isolation device for a subway environmental control distribution box includes a box body, characterized in that an exhaust port is provided on the upper side of one side of the box body, and an air extraction port is provided below it.

[0016] A gas flow channel is provided between the exhaust port and the intake port, and the gas flow channel is equipped with:

[0017] The conical water collection chamber has its opening facing downwards, and its top is connected to the vent.

[0018] A dust-collecting rotary table is located below a conical water collection chamber. It has a rotating dust-collecting part at the top and a support plate at the bottom, with the support plate connected to the rotating dust-collecting part on a shaft.

[0019] An air extraction device is located below the support plate and above the air extraction port.

[0020] Furthermore, the rotating dust-collecting unit includes:

[0021] A dust-absorbing plate is installed below the conical water collection cavity;

[0022] A rotating shaft is located at the bottom of the dust-collecting plate and is rotatably connected to the support plate.

[0023] The dust-collecting fan blades have a radius larger than that of the dust-collecting plate and are located below the dust-collecting plate. Several of them are snapped together along the circumferential direction of the rotation axis.

[0024] Furthermore, the support plate has an opening in the middle, and a hollow frame is provided on the opening. The rotating shaft is located above the opening and is rotatably connected to the hollow frame.

[0025] Furthermore, the surface of the conical water collection cavity is provided with a wave-shaped guide groove.

[0026] Furthermore, an annular water storage section is provided above the air extraction port to collect water that slides down from below the conical water collection chamber.

[0027] Furthermore, an air inlet is provided at the bottom of the electrical box body for the exchange of gas inside the electrical box body with external gas.

[0028] The beneficial effects of this utility model are:

[0029] 1. Low-level air extraction and high-level exhaust create a vertical airflow, using gravity to assist dust settling and reduce dust accumulation.

[0030] 2. The inverted cone water collection chamber and the rotating support plate are stacked on top of each other, and the airflow removes dust first and then dehydrates, avoiding mutual interference.

[0031] 3. The airflow-driven fan blades rotate the dust-collecting disc, requiring no additional power, saving energy while enhancing gas exchange efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0034] Figure 3 This is a schematic diagram of the internal structure of the gas flow channel;

[0035] Figure 4 This is a schematic diagram showing the internal structure of the gas flow channel.

[0036] The above figures include the following reference numerals:

[0037] 10. Electrical box body; 11. Exhaust port; 12. Air extraction port; 13. Air inlet; 20. Gas flow channel; 21. Conical water collection chamber; 210. Guide groove; 22. Dust suction disc; 220. Rotary dust suction unit; 2201. Rotating shaft; 2202. Dust suction fan blade; 2203. Dust suction plate; 221. Support plate; 2210. Hollow frame; 222. Air extraction device; 30. Annular water storage unit. Detailed Implementation

[0038] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments.

[0039] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] refer to Figure 1-4 This utility model provides an isolation device for a subway environmental control distribution box, including a box body 10 and a gas flow channel 20 for filtering gas.

[0041] In practice, the electrical box body 10 has a rectangular frame structure, with a single-sided panel integrating an air extraction port 12 and an exhaust port 11. The bottom of the exhaust port 11 is open, and internal installation space is reserved. The air extraction port 12 is located below the exhaust port 11. An air inlet 13 is located at the bottom of the electrical box body 10, and a removable coarse filter is installed on the air inlet 13. The coarse filter provides preliminary filtration of the air entering the device, protecting internal components from damage by large particles.

[0042] In practice, the gas flow channel 20 is vertically set on one side of the electrical box body 10, extending from the bottom air intake 12 to the top exhaust port 11 in the height direction and connecting with both, so that the airflow direction is unidirectional from bottom to top, ensuring that the dust and the adsorbent material have sufficient contact time, so that the dust is fully adsorbed, and avoiding the inability of moisture and dust to be effectively separated due to excessive flow rate, which would affect the overall protective effect of the device.

[0043] In practical implementation, a conical water collection cavity 21 with an inverted cone shape is provided inside the gas flow channel 20. The top surface is connected to the exhaust port 11 by a thread for easy disassembly. The inner wall is coated with a hydrophilic silica coating to promote rapid water sliding. A wavy guide groove 210 is provided on the inner surface to guide the water flow towards the edge of the conical water collection cavity 21, ensuring that the water can be smoothly guided from the top to the bottom and enter the annular water storage part 30. Moreover, the wavy surface increases the contact area between the water and the conical water collection cavity 21, thereby improving the dehumidification efficiency.

[0044] In practice, the dust suction disc 22 consists of a rotating dust suction part 220 and a support plate 221.

[0045] The rotating dust-collecting unit 220 consists of a dust-collecting plate 2203, a rotating shaft 2201, and dust-collecting fan blades 2202. The dust-collecting plate 2203 is a circular plate covered with a layer of polytetrafluoroethylene microporous filter membrane. This membrane has good air permeability and high dust interception capacity, effectively adsorbing tiny dust particles in the airflow. The rotating shaft 2201 is a cylindrical stainless steel shaft, with its lower end connected to the hollow frame 2210 of the support plate 221 via a deep groove ball bearing, ensuring that the rotating shaft 2201 can rotate flexibly and stably. Its top is fixedly connected to the dust-collecting plate 2203. The dust-collecting fan blades 2202 consist of six blades made of the same material as the dust-collecting plate 2203, and are rectangular with their long sides angled and snapped onto the rotating shaft 2201. This angled design allows the dust-collecting fan blades 2202 to rotate efficiently under the propulsion of the airflow, ensuring full contact and adsorption between the air and the fan blades. Driven by the suction fan blades 2202 and the suction plate 2203, 360° rotational adsorption is achieved, which greatly increases the contact area between dust and the filter membrane.

[0046] The support plate 221 has an opening in the middle, and a perforated frame 2210 is installed on the opening. The perforated frame 2210 has multiple small through holes evenly distributed throughout, allowing airflow to pass smoothly while intercepting large particles in the airflow to prevent them from entering subsequent components and damaging the device. A rotating shaft 2201 is positioned above the opening and is fitted with the perforated frame 2210 via a bearing clearance, allowing the rotating shaft 2201 to rotate freely. The support plate 221 is tightly connected to the upper surface of the suction device 222 by bolts.

[0047] In practice, the extraction device 222 is an existing fan structure, including a housing and fan blades housed within the housing. The addition of the extraction device 222 to the gas flow channel 20 increases the airflow velocity, lowers the temperature inside the pipe, and accelerates the condensation of water vapor.

[0048] In practical implementation, the annular water storage section 30 adopts an annular groove structure made of transparent acrylic. The transparent acrylic material facilitates real-time observation of the water level, allowing staff to easily understand the working status of the water storage section. A ball valve is installed at the bottom for manual drainage, making operation simple and convenient. It is tightly fixed to the upper edge of the air extraction port 12 via a locking groove. A downward-extending annular locking groove is provided around the upper edge of the annular water storage section 30. During installation, align the locking groove of the annular water storage section 30 with the upper edge of the air extraction port 12, and then gently press to fix the annular water storage section 30 to the upper edge of the air extraction port 12. Simultaneously, it aligns with the bottom edge of the conical water collection chamber 21, allowing water separated from the conical water collection chamber 21 to flow smoothly into the annular water storage section 30.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An isolation device for a subway environmental control distribution box, comprising a box body (10), characterized in that, An exhaust port (11) is provided on the upper side of one side of the electrical box body (10), and an air extraction port (12) is provided below it. A gas flow channel (20) is provided between the exhaust port (11) and the suction port (12), and the gas flow channel (20) is provided with: The conical water collection chamber (21) has its opening facing downwards, and its top is connected to the exhaust port (11). A dust-collecting rotary disk (22) is located below a conical water collection chamber (21). A rotating dust-collecting part (220) is provided at its top, and a support plate (221) is provided at its bottom. The support plate (221) is connected to the rotating dust-collecting part (220) on a shaft. An air extraction device (222) is located below the support plate (221) and above the air extraction port (12).

2. The isolation device for a subway environmental control distribution box according to claim 1, characterized in that, The rotating dust suction unit (220) includes: A dust-absorbing plate (2203) is installed below the conical water collection cavity (21); A rotating shaft (2201) is located at the bottom of the dust-absorbing plate (2203) and is rotatably connected to the support plate (221); The suction fan blades (2202) have a radius larger than that of the suction plate (2203), and are located below the suction plate (2203). Several of them are snapped together along the circumferential direction of the rotating shaft (2201).

3. An isolation device for a subway environmental control distribution box according to claim 2, characterized in that, The support plate (221) has an opening in the middle, and a hollow frame (2210) is provided on the opening. The rotating shaft (2201) is located above the opening and is rotatably connected to the hollow frame (2210).

4. An isolation device for a subway environmental control distribution box according to claim 1, characterized in that, The surface of the conical water collection cavity (21) is provided with a wave-shaped guide groove (210).

5. An isolation device for a subway environmental control distribution box according to claim 1, characterized in that, An annular water storage section (30) is also provided above the air extraction port (12) to collect water that slides down from below the conical water collection chamber (21).

6. An isolation device for a subway environmental control distribution box according to claim 1, characterized in that, An air inlet (13) is provided at the bottom of the electrical box body (10) for exchanging gas inside the electrical box body (10) with external gas.

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