Protective device for electric meter box

Abstract

The utility model discloses a protection device for an electric meter box, relates to the field of electric meter boxes, and aims to solve the technical problems that in the prior art, heat dissipation is performed through heat dissipation holes formed in a shell of an existing electric meter box, and no protection device is arranged outside the heat dissipation holes, so that water vapor and dust in external air easily enter the electric meter box; and the normal work of the electric meter in the electric meter box is influenced. An air outlet is formed in the middle of the upper end of the electric meter box, a fan shell is connected to the position, at the lower end of the air outlet, in the electric meter box, a fan is arranged in the middle of the interior of the fan shell, a plurality of fan blades are fixedly connected to an output shaft of the fan, and an air inlet is formed in the middle of the lower end face of the electric meter box; the lower end of the air inlet is connected with a moisture absorbent shell, moisture absorbent filler is arranged in the moisture absorbent shell, moisture in air is effectively absorbed by the moisture absorbent filler, it is ensured that the air entering the electric meter box is kept dry, and the influence of water vapor and dust on equipment in the electric meter box is avoided.

Description

Technical Field

[0001] This utility model relates to the field of meter boxes, specifically a protective device for meter boxes. Background Technology

[0002] An electricity meter box is a protective device specifically designed to house electricity metering instruments (such as electricity meters). It is typically made of materials such as plastics (e.g., ABS engineering plastics, transparent polycarbonate PC, fiber-reinforced polyester, etc.) or metals, and possesses properties such as waterproofing, dustproofing, explosion-proofing, and corrosion resistance. The meter box measures and records the electricity consumption through the meter, used for monitoring and measuring electrical energy. It usually employs load switches to control the flow of electrical energy and prevent overload. The meter box contains incoming and outgoing line switches, wiring, and other components to protect the electricity metering instruments and wiring, preventing operational instability or safety hazards caused by external factors.

[0003] For example, authorization announcement number CN203870135U discloses an electricity meter box, which includes a box body containing an electricity meter, heat dissipation holes on both sides of the box body, and a box cover on the front of the box body. The box cover has a transparent cover. The key point is that a smoke sensor, a temperature sensor, and an alarm are installed on top of the electricity meter located inside the box body. The smoke sensor and temperature sensor are respectively connected to the community power distribution room through wires; the smoke sensor is connected to the alarm through a wire. This utility model solves the drawback of the difficulty in detecting the internal situation in the prior art by setting up smoke sensors and temperature sensors, and the smoke control alarm can promptly remind community duty personnel to reduce the harm caused by accidents.

[0004] Existing meter boxes dissipate heat through ventilation holes on their outer casing, but these holes lack external protection. This allows moisture and dust from the outside air to easily enter the meter box, affecting the normal operation of the meters inside. Therefore, there is an urgent market need to develop a protective device for meter boxes to help solve this problem. Utility Model Content

[0005] The purpose of this utility model is to provide a protective device for an electric meter box, in order to solve the problem mentioned in the background art that existing electric meter boxes dissipate heat through heat dissipation holes set on the outer shell, and no protective device is set outside the heat dissipation holes, which makes it easy for moisture and dust in the outside air to enter the electric meter box and affect the normal operation of the electric meter inside the electric meter box.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a protective device for an electric meter box, comprising an electric meter box, an air outlet provided at the upper middle part of the electric meter box, a fan housing connected to the lower end of the air outlet inside the electric meter box, a fan provided at the middle part of the fan housing, multiple fan blades fixedly connected to the output shaft of the fan, an upper cover plate fixedly provided on the upper surface of the electric meter box above the air outlet, an air inlet provided at the middle part of the lower surface of the electric meter box, a desiccant housing connected to the lower end of the air inlet, and a desiccant filler provided inside the desiccant housing.

[0007] Preferably, the fan is fixedly connected to the inner wall of the fan housing by a support rod, and a first wing plate is fixedly connected to the upper end of the outer end face of the fan housing.

[0008] Preferably, the first wing plate, the upper surface of the meter box, and the upper cover plate are all fixedly connected by a plurality of first screws, and a circular protective net is provided in the middle of the upper cover plate, the circular protective net being vertically aligned with the air outlet.

[0009] Preferably, a first rectangular protective net is fixedly installed at the lower end of the inside of the desiccant shell, and a second wing plate is fixedly connected to the upper end of the desiccant shell, with a second rectangular protective net fixedly installed in the middle of the second wing plate.

[0010] Preferably, the desiccant filler is filled inside the desiccant shell and between the first rectangular protective net and the second rectangular protective net.

[0011] Preferably, the first rectangular protective net, the second rectangular protective net, and the air inlet are vertically aligned.

[0012] Preferably, the second wing plate is fixedly connected to the lower end face of the meter box by a plurality of second screws.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, by combining a fan and a desiccant housing, efficient heat dissipation and air dehumidification inside the meter box are achieved. The fan exhausts the hot air inside the meter box through forced convection while simultaneously drawing in cold air from outside. The desiccant filler inside the desiccant housing effectively absorbs moisture from the air, ensuring that the air entering the meter box remains dry. This avoids the impact of moisture and dust on the equipment inside the meter box, thereby improving the operational stability and service life of the equipment.

[0015] (2) In this utility model, a multi-protection net design is adopted, including a circular protective net, a first rectangular protective net and a second rectangular protective net. These protective nets are respectively set at the air outlet and the upper and lower ends of the desiccant shell, which effectively prevents external debris and insects from entering the inside of the meter box, protects the meter box and its internal equipment from damage, and improves the safety and reliability of the equipment.

[0016] (3) In this utility model, the device is designed to be easy to disassemble and maintain. The fan housing, the top cover plate, and the desiccant housing are all fixedly connected to the meter box by screws. This design allows users to easily disassemble these parts for cleaning or replacement, reducing maintenance costs and improving the maintainability and service life of the equipment. Attached Figure Description

[0017] Figure 1 This is a front view of a protective device for an electric meter box according to the present invention;

[0018] Figure 2 This is a front sectional view of the present invention;

[0019] Figure 3 This is a side sectional view of the present invention;

[0020] Figure 4 This is a detailed enlarged view of part A of this utility model.

[0021] In the diagram: 1. Meter box; 101. Air outlet; 102. Air inlet; 2. Fan casing; 201. First wing plate; 202. Fan; 203. Fan blades; 204. Support rod; 3. Top cover plate; 301. Circular protective net; 302. First screw; 4. Desiccant casing; 401. First rectangular protective net; 402. Second wing plate; 403. Second rectangular protective net; 404. Second screw; 405. Desiccant filler. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figure 1-4This utility model provides an embodiment of a protective device for an electric meter box, comprising an electric meter box 1, an air outlet 101 located at the upper center of the electric meter box 1, a fan housing 2 connected to the lower end of the air outlet 101 inside the electric meter box 1, a fan 202 located at the center of the fan housing 2, the fan 202 being fixedly connected to the inner wall of the fan housing 2 via a support rod 204, a first wing plate 201 fixedly connected to the upper end of the outer end face of the fan housing 2, and multiple fan blades 203 fixedly connected to the output shaft of the fan 202, and an upper cover plate 3 fixedly installed on the upper end face of the electric meter box 1 above the air outlet 101, the first wing plate 201, and the electric meter box 1... The upper end face and the upper cover plate 3 are fixedly connected by multiple first screws 302. A circular protective net 301 is provided in the middle of the upper cover plate 3. The circular protective net 301 is vertically aligned with the air outlet 101. The fan 202 drives multiple fan blades 203 to rotate, so that the hot air inside the meter box 1 passes through the air outlet 101 and is discharged from the circular protective net 301 on the upper cover plate 3 to achieve heat dissipation. At the same time, the circular protective net 301 covers the upper end of the air outlet 101 to prevent external debris and insects from entering the meter box 1. By removing the multiple first screws 302, the fan housing 2 and the upper cover plate 3 can be disassembled for easy maintenance and replacement.

[0024] Please see Figure 2-4 An air inlet 102 is provided in the middle of the lower end face of the meter box 1. A desiccant housing 4 is connected to the lower end of the air inlet 102. A desiccant filler 405 is provided inside the desiccant housing 4. A first rectangular protective net 401 is fixedly installed at the lower end of the desiccant housing 4. A second wing plate 402 is fixedly connected to the upper end of the desiccant housing 4. A second rectangular protective net 403 is fixedly installed in the middle of the second wing plate 402. The desiccant filler 405 fills the inside of the desiccant housing 4 and is located between the first rectangular protective net 401 and the second rectangular protective net 403. The first rectangular protective net 401, the second rectangular protective net 403 and the air inlet 102 are vertically aligned. The hotter air inside the meter box 1 passes through the air outlet 101 and exits from the circular protective net on the upper cover 3. When the protective net 301 is discharged, a negative pressure is generated inside the meter box 1. Through the negative pressure, the outside air passes through the inside of the desiccant housing 4 and enters the inside of the meter box 1 through the air inlet 102, realizing the circulation and heat dissipation of the meter box 1. When the outside air passes through the inside of the desiccant housing 4, the desiccant filler 405 dehumidifies the air, keeping the air inside the meter box 1 dry. The lower end of the desiccant housing 4 is covered by the first rectangular protective net 401, effectively preventing insects from entering. The second wing plate 402 is fixedly connected to the lower end face of the meter box 1 by multiple second screws 404. By removing the multiple second screws 404, the desiccant housing 4 can be separated from the meter box 1, making it easy to replace the desiccant filler 405.

[0025] Working Principle: During use, when the internal temperature of the meter box 1 rises and requires heat dissipation, the fan 202 starts and drives multiple fan blades 203 to rotate, generating a strong airflow that exhausts the hot air inside the meter box 1 from the air outlet 101. Simultaneously, external cold air is drawn into the meter box 1 under the negative pressure generated by the fan's suction and passes through the desiccant housing 4. During this process, the desiccant filler 405 effectively absorbs moisture from the air, achieving air drying. The dried cold air then enters the meter box 1 through the air inlet 102, completing the circulating heat dissipation. The circular protective net 301 and the first rectangular protective net 401 play a crucial role in preventing external debris and insects from entering the meter box 1, thereby ensuring the normal operation and safety of the meter box 1 and its internal equipment. Furthermore, the device is designed for easy disassembly and maintenance; by removing the first screw 302 and the second screw 404, the fan housing 2, the top cover 3, and the desiccant housing 4 can be easily cleaned or replaced.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A protective device for an electric meter box, comprising an electric meter box (1), characterized in that: An air outlet (101) is provided at the middle of the upper end of the meter box (1). A fan housing (2) is connected to the lower end of the air outlet (101) inside the meter box (1). A fan (202) is provided in the middle of the fan housing (2). Multiple fan blades (203) are fixedly connected to the output shaft of the fan (202). A top cover plate (3) is fixedly provided on the upper surface of the meter box (1) above the air outlet (101). An air inlet (102) is provided in the middle of the lower surface of the meter box (1). A desiccant housing (4) is connected to the lower end of the air inlet (102). A desiccant filler (405) is provided inside the desiccant housing (4).

2. The protective device for an electric meter box according to claim 1, characterized in that: The fan (202) is fixedly connected to the inner wall of the fan housing (2) by a support rod (204), and a first wing plate (201) is fixedly connected to the upper end of the outer side of the fan housing (2).

3. A protective device for an electric meter box according to claim 2, characterized in that: The first wing plate (201), the upper end face of the meter box (1) and the upper cover plate (3) are fixedly connected by a plurality of first screws (302). A circular protective net (301) is provided in the middle of the upper cover plate (3), and the circular protective net (301) is vertically aligned with the air outlet (101).

4. A protective device for an electric meter box according to claim 1, characterized in that: The lower end of the inside of the desiccant housing (4) is fixedly provided with a first rectangular protective net (401), and the upper end of the desiccant housing (4) is fixedly connected with a second wing plate (402), and the middle part of the second wing plate (402) is fixedly provided with a second rectangular protective net (403).

5. A protective device for an electric meter box according to claim 4, characterized in that: The desiccant filler (405) is filled inside the desiccant housing (4) and between the first rectangular protective net (401) and the second rectangular protective net (403).

6. A protective device for an electric meter box according to claim 4, characterized in that: The first rectangular protective net (401), the second rectangular protective net (403), and the air inlet (102) are vertically aligned.

7. A protective device for an electric meter box according to claim 4, characterized in that: The second wing plate (402) is fixedly connected to the lower end face of the meter box (1) by a plurality of second screws (404).

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