A metering box with a ventilation and heat dissipation structure

Abstract

The present application discloses a metering box with a ventilation and heat dissipation structure, belonging to the technical field of metering boxes. It mainly includes a box body, a side box and a ventilation opening. At least two groups of electric meters are installed in the box body; the side box is fixedly installed on one side of the box body, and a sealing opening is provided at the upper end of one side of the side box, and a wooden plug is arranged at the sealing opening; the ventilation opening is opened on the box body, and the ventilation opening includes an air inlet and an air outlet, a partition is arranged between the air inlet and the air outlet, and a fan is arranged at the air outlet. A metering box with a ventilation and heat dissipation structure of the present application is provided with a side box, a second slider, a second slide rail, a connecting rod and a filter plate. During use, the filter plate can filter the position of the ventilation opening of the metering box to prevent dust and other impurities from entering the metering box and affecting the electrical components. At the same time, the staff can adjust the position of the filter plate through the second slider and the connecting rod, so as to facilitate the subsequent disassembly, installation and replacement of the filter plate.

Description

Technical Field

[0001] The present application relates to the technical field of metering boxes, and specifically relates to a metering box with a ventilation and heat dissipation structure. Background Art

[0002] A metering box is a special box for installing and protecting measuring instruments; among them, measuring instruments such as electric meters, water meters, gas meters and other related equipment, and the metering box is mainly used for accurately measuring and managing the usage of energy or resources such as electricity, water, gas, etc.; since various electrical components are included in the metering box, a large amount of heat will inevitably be generated during the operation of these electrical components. If the heat cannot be dissipated in time, it will cause the temperature inside the metering box to rise, thus affecting the normal operation of the electrical components. For this reason, the metering box needs to be provided with a ventilation and heat dissipation structure to introduce fresh air and reduce its internal temperature.

[0003] For example, the patent with the publication number CN219834731U discloses a metering box with an aluminum foil heat dissipation structure, including a box body, a heat generating device, and an aluminum foil heat dissipation component. The heat generating device is located inside the box body, and part of the aluminum foil heat dissipation component is located inside the box body. By connecting the aluminum foil to the heat generating device and extending the aluminum foil out of the box body through the air outlet hole, and assisting the fan to accelerate the air flow, the heat dissipation effect is stronger. Although it realizes the ventilation and heat dissipation function of the metering box, however, in the actual use process of the metering box, it may be applied to different indoor or outdoor scenarios. When the metering box is located outdoors, it often experiences changes such as high and low temperature differences and rain and snow weather. And when the metering box is outdoors, there is more dust outdoors, and more dust will float into the box through the ventilation openings of the metering box. If the metering box cannot filter out impurities such as dust outdoors, after long-term accumulation of dust, it will affect the normal use of the electrical components inside the metering box. Therefore, it is necessary to provide a metering box with a ventilation and heat dissipation structure to solve the above problems.

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of the present application, and therefore, it may include information that does not constitute the prior art. Summary of the Invention

[0005] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a metering box with a ventilation and heat dissipation structure, which solves the problem that the metering box cannot filter dust and other particulate impurities.

[0006] The technical solution adopted by the present application to solve its technical problems is: a metering box with a ventilation and heat dissipation structure, including:

[0007] A box body, in which at least two groups of electric meters are installed;

[0008] Side box, which is fixedly installed on one side of the box body. There is a seal opening at the upper end of one side of the side box, and a wooden plug is provided at the seal opening;

[0009] Ventilation opening, which is opened on the box body. The ventilation opening includes an air inlet and an air outlet. There is a partition between the air inlet and the air outlet. A fan is provided at the air outlet, and the fan is fixedly connected to the outer surface of the box body;

[0010] Adjusting component, which is installed at the upper end inside the box body. The adjusting component includes:

[0011] First slide rail, which is fixedly installed at the upper end inside the box body;

[0012] First slider, which is slidably installed on one side of the first slide rail. A support rod is fixedly installed at the bottom of the first slider;

[0013] First spring, which is fixedly installed on one side of the inner wall of the box body. The other side of the first spring is fixedly connected to the first slider;

[0014] Filter plate, which is fixedly installed at the bottom of the support rod. Multiple groups of filter holes are opened on the filter plate.

[0015] Furthermore, a cylinder is fixedly installed at the upper end inside the box body. One side of the output end of the cylinder is fixedly connected to the first slider.

[0016] Furthermore, a movable component is installed inside the box body. The movable component includes a vertical rod fixedly installed inside the box body. Two groups of second slide rails are fixedly installed on both sides of the vertical rod. Two of the second slide rails are inclined upward, and the other second slide rails are inclined downward. The other ends of the second slide rails are respectively fixedly connected to both sides inside the box body. The two second slide rails close to the side box are defined as the first unit, and the two second slide rails far from the side box are the second unit. The second unit is a mirror image of the first unit. A second slider is slidably installed at a position close to the vertical rod on the second slide rail. A sealing plate is fixedly installed at one end of the second slider away from the second slide rail. The surface of the sealing plate away from the second slider is attached to the inner wall of the box body. One end of the second slider is fixedly installed with a second spring, and the other end of the second spring is fixedly connected to the inner wall of the box body.

[0017] Further, an upper baffle is fixedly installed at the upper end inside the box body. A first rack is slidably installed on one side of the upper baffle. A gear is rotatably connected to the middle position of the upper baffle through a bearing. The first rack meshes with the gear. A second rack is also slidably installed at the bottom on one side of the upper baffle. The second rack meshes with the gear. One side of the first rack is fixedly connected to the first slider.

[0018] Further, a first connecting rod is rotatably installed on the other side of the first rack. The other end of the first connecting rod is rotatably connected to one of the second sliders of the second unit. A second connecting rod is rotatably connected to one side of the second rack. The other end of the second connecting rod is rotatably connected to one of the second sliders of the first unit.

[0019] Further, a part of the first connecting rod is made of an elastic material and forms an elastic end. A part of the second connecting rod is also made of an elastic material.

[0020] Further, a telescopic assembly is installed between the two second sliders of the first unit. A telescopic assembly is also installed between the two second sliders of the second unit. A first rod and a second rod are respectively and fixedly installed on the two second sliders of the first unit. A sleeve is sleeved between the first rod and the second rod. The inner diameter of the sleeve is larger than the diameters of the first rod and the second rod. Limiting steps are arranged on both sides of the sleeve. A protruding end is arranged at a position where the first rod and the second rod are close to each other. The diameter of the protruding end is larger than the diameters of the first rod and the second rod and is adapted to the inner diameter of the sleeve.

[0021] Further, first electromagnets are arranged at positions close to the limiting steps at both ends of the sleeve. Second electromagnets are arranged at positions close to the protruding end on the first rod and the second rod. The first electromagnets and the second electromagnets repel each other with the same polarity.

[0022] Further, the filter plate is composed of an outer frame and a plate body. The outer frame is fixedly connected to the support rod. The plate body is connected to the inside of the outer frame by bolts. The filter holes are formed on the plate body.

[0023] The beneficial effect of this application is as follows: A metering box with a ventilation and heat dissipation structure provided by this application, by setting a side box, second sliders, second slide rails, connecting rods, and a filter plate. During use, the filter plate can filter the ventilation opening position of the metering box to prevent dust and other impurities from entering the metering box and affecting the electrical components. At the same time, the staff can adjust the position of the filter plate through the second sliders and the connecting rods to facilitate the subsequent disassembly, installation, and replacement of the filter plate.

[0024] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The following will further describe the present application in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings forming a part of this application are used to provide a further understanding of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0026] Figure 1 is an overall schematic diagram of a metering box with a ventilation and heat dissipation structure in the present application;

[0027] Figure 2 is Figure 1 a side view of the overall structure in;

[0028] Figure 3 is Figure 1 an overall schematic diagram of the structure after the box door in is opened;

[0029] Figure 4 is Figure 2 a schematic diagram of the overall structure after partial section in;

[0030] Figure 5 is Figure 1 a sectional view of the overall structure in;

[0031] Figure 6 is Figure 5 a side view of the overall structure in;

[0032] Figure 7 is Figure 6 an enlarged view of the structure of area A in;

[0033] Figure 8 is Figure 5 an overall schematic diagram of the structure after the filter plate is installed in.

[0034] Among them, the reference numerals in the drawings:

[0035] 1, box body; 2, side box; 21, seal; 3, ventilation opening; 4, electric meter;

[0036] 5, movable component; 51, sealing plate; 52, second slider; 53, second slide rail; 54, vertical rod; 55, second spring;

[0037] 6, telescopic component; 61, first rod; 62, sleeve; 63, second rod;

[0038] 7, adjusting component; 71, upper baffle; 72, first connecting rod; 73, second connecting rod; 74, first rack; 75, gear; 76, second rack; 77, first slide rail; 78, first spring;

[0039] 10. Cylinder; 11. Filter plate; 12. Support rod; 13. First slider. Detailed implementation manners

[0040] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0041] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0042] Embodiment 1: This embodiment mainly introduces the basic structure and working principle of a metering box with a ventilation and heat dissipation structure. Specifically:

[0043] As Figures 1-3 shown, the present application provides a metering box with a ventilation and heat dissipation structure, including a box body 1. A side box 2 is fixedly installed on one side of the box body 1. The side box 2 is mainly used to store filtering tools, and the inner cavity of the side box 2 is communicated with the inner cavity of the box body 1;

[0044] At least two electric meters 4 are installed in the box body 1. The electric meters 4 are mainly used to measure the use of electricity. At the same time, a box door is movably installed on one side of the box body 1, and a transparent observation window is provided on the box door. Through the observation window, the staff can observe the situation inside the box body 1;

[0045] However, the electric meters 4 will inevitably generate heat during use, so it is necessary to ventilate and dissipate heat from the box body 1. As Figure 2 , Figures 4-6 shown, a ventilation opening 3 is opened on the box body 1. In this embodiment, the ventilation opening 3 is mainly divided into an air inlet and an air outlet. A partition is provided between the air inlet and the air outlet. At the same time, a fan (not marked in the figure) is provided at the air outlet. The fan is fixedly connected to the outer surface of the box body 1. The ventilation opening 3 is mainly used to discharge the hot air inside the box body 1, and fresh air can enter the box body 1 from the air inlet to achieve the effect of ventilation and heat dissipation. And the ventilation opening 3 is arranged on the back of the electric meter 4. Taking the perspective in Figure 1 as an example, regarding the box door as the front of the box body 1, and the ventilation opening 3 is arranged on the back of the box body 1. During the use of the electric meter 4, usually its back generates heat, so the air entering from the ventilation opening 3 can directly blow on the electric meter 4 to achieve a better heat dissipation effect;

[0046] An adjustment assembly 7 is installed at the upper end inside the box body 1. The adjustment assembly 7 includes a first slide rail 77 fixedly installed at the upper end inside the box body 1. A first slider 13 is slidably installed on one side of the first slide rail 77. When the first slider 13 is subjected to an external force, the first slider 13 is adapted to slide on the first slide rail 77;

[0047] A support rod 12 is fixedly installed at the bottom of the first slider 13. A filter plate 11 is fixedly installed at the bottom of the support rod 12. Multiple groups of filter holes are formed in the filter plate 11 to facilitate filtering dust, particles and other impurities in the air. At the same time, a sealing opening 21 is formed at the upper end of one side of the side box 2. The sealing opening 21 mainly facilitates the staff to push the first slider 13 through the sealing opening 21 with the help of tools to adjust the position of the filter plate 11. When the sealing opening 21 is not in use, the staff can block the sealing opening 21 with a wooden plug. The wooden plug is tightly fitted with the sealing opening 21. When the sealing opening 21 needs to be used, the staff can remove the wooden plug from the sealing opening 21;

[0048] Continue to refer to Figure 6 , a first spring 78 is fixedly installed on the side of the first slider 13 away from the side box 2. The other side of the first spring 78 is fixedly connected to the inner wall of the box body 1. Thus, when the filter plate 11 is subjected to an external force, the support rod 12 and the first slider 13 will slide synchronously, and the first spring 78 will be compressed. When the external force is removed, the first slider 13 returns to the initial position due to the resilience of the first spring 78, and at the same time the filter plate 11 returns to the initial position;

[0049] In the initial state, due to the elastic force of the first spring 78, the filter plate 11 is located at a position away from the ventilation opening 3. Specifically, refer to Figure 6 , at this time, a part of the filter plate 11 is inside the box body 1, and the other part is inside the side box 2. At the same time, the first slider 13 is located at a position close to the sealing opening 21. At this time, the ventilation opening 3 is in a ventilation state, and the filter plate 11 does not block the ventilation opening 3. However, when the staff needs to use the filter plate 11, first, the wooden plug at the sealing opening 21 needs to be removed. Then, with the help of tools, the first slider 13 is pushed. The movement of the first slider 13 drives the filter plate 11 to move synchronously. The filter plate 11 moves towards the ventilation opening 3. When the filter plate 11 overlaps with the ventilation opening 3, it means that the filter plate 11 has moved in place. Then, the staff can place one end of the pushing tool against the inside of the box body 1 and the other end against the first slider 13 to offset the elastic force of the first spring 78, so that the filter plate 11 can maintain the position after movement. This method is one of many methods to limit the reset of the filter plate 11. Finally, the staff can plug the wooden plug back into the sealing opening 21;

[0050] In summary, the staff can freely control the placement position of the filter plate 11. In most cases, the filter plate 11 is in a position overlapping with the ventilation opening 3 to filter dust and impurities in the box body 1. When it is necessary to clean or replace the filter plate 11, the staff only needs to take out the tool from the box body 1. The first slider 13 is no longer held. Under the action of the resilience of the first spring 78, the first slider 13 slides towards the side box 2. The first slider 13 drives the filter plate 11 to slide synchronously. Finally, the filter plate 11 slides to the initial position. It should be noted that the side plate of the side box 2 away from the box body 1 is also connected by bolts, so that the staff can disassemble and assemble the side plate of the side box 2 to facilitate operations such as cleaning and replacing the filter plate 11;

[0051] It should be noted that in this application, the filter plate 11 is mainly composed of an outer frame and a plate body. The outer frame is fixedly connected to the support rod 12, the plate body is connected to the outer frame by bolts, and the filter holes are opened on the plate body. When it is necessary to replace the filter plate 11, the staff only needs to unscrew the screws on the plate body, and then connect the plate body to be replaced to the outer frame by bolts, so as to realize the quick disassembly and replacement of the filter plate 11.

[0052] Embodiment 2: In the above embodiment, the staff can push the first slider 13 to change the position of the filter plate 11 and realize the quick disassembly and replacement of the filter plate 11 by bolts. However, when the filter plate 11 is in the replacement state (that is, the filter plate 11 is in the initial position), at this time, the ventilation opening 3 is still in the ventilation state, but at this time, dust and other particulate impurities can directly enter the box body 1;

[0053] When this metering box is used in a mining area, since a large amount of dust and particulate impurities are generated during coal mining, if the filter plate 11 in the box body 1 is to maintain a good filtering effect and ensure the ventilation state, the staff needs to frequently replace or clean the filter plate 11. However, when the filter plate 11 is replaced, it is usually in the initial position, and at this time, the ventilation opening 3 is in the ventilation state. Therefore, a large amount of dust generated during coal mining will enter the box body 1. After a large number of times, a large amount of dust will also accumulate in the box body 1, thus affecting the normal operation of the electric meter 4;

[0054] To solve this problem, an adjustable closing device is added in this embodiment on the basis of Embodiment 1. Specifically: as Figures 4-8 shown, first of all, in the above embodiment, when adjusting the filter plate 11, it is the staff who pushes the first slider 13 to adjust by tools, and the staff needs to constantly observe the position of the filter plate 11. In this embodiment, the installation method of the filter plate 11 is limited. A cylinder 10 is fixedly installed at the upper end in the box body 1, and one side of the output end of the cylinder 10 is fixedly connected to the first slider 13;

[0055] In the initial state, when the metering box has not started to be used, the filter plate 11 is in the initial state. When the metering box starts to work in the mining area, the vent 3 needs to be filtered. At this time, the cylinder 10 is activated to drive the first slider 13 to slide. When the output end of the cylinder 10 extends to the limit position, the filter plate 11 overlaps with the vent 3, and the installation of the filter plate 11 is completed, which can filter the incoming air at the vent 3 to remove dust. This process can be achieved through the cylinder 10 without manual operation;

[0056] If it is necessary to clean or replace the filter plate 11, only need to control the output end of the cylinder 10 to retract, and drive the first slider 13 to retract synchronously, then the filter plate 11 can be returned to the initial position to facilitate the subsequent disassembly or cleaning of the filter plate 11. This can be completed through the cylinder 10, and the operation is simple;

[0057] When the metering box is operating in the mining area, if the filter plate 11 needs to be replaced at this time, the box body 1 should be in a closed state to avoid a large amount of dust entering the box body 1. As Figures 4-7 shown, an activity component 5 is installed in the box body 1. The activity component 5 includes a vertical rod 54 fixedly installed in the box body 1, and the vertical rod 54 is located in the middle of the box body 1;

[0058] On both sides of the vertical rod 54, two groups of second slide rails 53 are fixedly installed. The second slide rails 53 are all inclined. Taking the perspective in Figure 6 as an example, there are a total of four groups of the second slide rails 53, which are respectively located on the left and right sides of the vertical rod 54. For the convenience of description, the two groups of second slide rails 53 close to the side box 2 on this side are defined as the first unit, and the two groups of second slide rails 53 far from the side box 2 are defined as the second unit, and the second unit is a mirror image of the first unit;

[0059] For the two groups of second slide rails 53 in the first unit, one group is inclined upward and the other group is inclined downward. The other ends of the second slide rails 53 are respectively fixedly connected to both sides inside the box body 1. A second slider 52 is slidably installed on the second slide rail 53 close to the vertical rod 54. When the second slider 52 is subjected to an external force, it is adapted to slide on the second slide rail 53;

[0060] A second spring 55 is fixedly installed at one end of the second slider 52. The other end of the second spring 55 is fixedly connected to the inner wall of the box body 1. In the initial state, due to the elastic force of the second spring 55, the second sliders 52 at one end inside the box body 1 are close to each other. After being subjected to an external force, the second sliders 52 on the first unit and the second sliders 52 on the second unit both slide in a direction away from the vertical rod 54;

[0061] A sealing plate 51 is fixedly installed at one end of the second slider 52 away from the second slide rail 53. One side of the sealing plate 51 away from the second slider 52 is in contact with the inner wall of the box body 1. When the second slider 52 is in the initial state, each group of sealing plates 51 are combined with each other to form a complete wind baffle. The area of the wind baffle is larger than the area of the ventilation opening 3 and is suitable for completely blocking it. It can be understood that when the second slider 52 is in the initial position, the ventilation opening 3 is blocked by the sealing plate 51. At this time, the box body 1 does not have the effect of ventilation and heat dissipation, and at the same time, a large amount of dust and other impurities are prevented from escaping into the box body 1;

[0062] Continue to refer to Figures 6-7 , an upper baffle 71 is fixedly installed at the upper end inside the box body 1. A first rack 74 is slidably installed on one side of the upper baffle 71. At the same time, a gear 75 is movably connected to the middle position of the upper baffle 71 through a bearing. The first rack 74 meshes with the gear 75. A second rack 76 is also slidably installed at the bottom on one side of the upper baffle 71. The second rack 76 meshes with the gear 75. For details, refer to Figure 6 . In the initial state, the first rack 74 is close to the side box 2, and the second rack 76 is located at a position away from the side box 2. When the gear 75 rotates counterclockwise, the first rack 74 moves in a direction away from the side box 2, and the second rack 76 moves in a direction close to the side box 2 driven by the gear 75;

[0063] One side of the first rack 74 is fixedly connected to the first slider 13. Thus, when the first slider 13 slides in a direction away from the side box 2, the first rack 74 will synchronously slide in a direction away from the side box 2, thereby driving the gear 75 to rotate counterclockwise, and the rotation of the gear 75 drives the second rack 76 to move in a direction close to the side box 2;

[0064] A first connecting rod 72 is rotatably installed on the other side of the first rack 74. The other end of the first connecting rod 72 is rotatably connected to one of the second sliders 52 on the second unit. And a part of the first connecting rod 72 is made of an elastic material and forms an elastic end. Usually, if the first rack 74 moves and drives the first connecting rod 72 to move, the first connecting rod 72 will drive the second slider 52 fixedly connected to it to move synchronously. If the second slider 52 is restricted and cannot move further, but the first rack 74 continues to move, at this time, the elastic end of the first connecting rod 72 will be stretched. On the contrary, if the first connecting rod 72 is squeezed, it will be compressed, which will not affect the connection between the first rack 74 and the second slider 52, and the first rack 74 will adapt to the change of the connection angle;

[0065] Similarly, a second connecting rod 73 is rotatably connected to one side of the second rack 76. The other end of the second connecting rod 73 is rotatably connected to one of the second sliders 52 on the first unit. A part of the second connecting rod 73 is also made of an elastic material. Its installation method, used materials, and usage method are the same as those of the first connecting rod 72. The purpose is that when the second rack 76 moves, it can drive the second slider 52 on the first unit to move synchronously;

[0066] However, the second connecting rod 73 and the first connecting rod 72 can only drive one of the second sliders 52 on the first unit and the second unit to move. Therefore, when the gear 75 rotates, it can only drive half of the sealing plates 51 to move. In order to achieve that the gear 75 can drive all the sealing plates 51 to move during rotation, continue to refer to Figures 6-7 , a telescopic component 6 is installed between the two second sliders 52 on the first unit, and a telescopic component 6 is also installed between the two second sliders 52 on the second unit. The telescopic component 6 is mainly used to drive the two second sliders 52 on the first unit and the second unit to move synchronously;

[0067] Taking the two second sliders 52 on the first unit as an example, the telescopic component 6 includes a first rod 61 fixedly connected to the second slider 52. A second rod 63 is fixedly installed on the other second slider 52. A sleeve 62 is sleeved between the first rod 61 and the second rod 63. The inner diameter of the sleeve 62 is larger than the diameters of the first rod 61 and the second rod 63. And limiting steps are provided at the barrel openings on both sides of the sleeve 62. At the same time, a protruding end is provided at a position where the first rod 61 and the second rod 63 are close to each other. The diameter of the protruding end is larger than the diameters of the first rod 61 and the second rod 63 and is adapted to the inner diameter of the sleeve 62. However, the protruding end cannot cross the limiting step. It can be understood that the first rod 61 and the second rod 63 at most extend to the barrel opening position of the sleeve 62, and at this time the protruding end is located at the limiting step;

[0068] In the initial state, when the metering box has not started to be used, refer to Figure 6 , at this time, the filter plate 11 is located at a position far from the ventilation opening 3, and the sealing plates 51 are close to each other to block the ventilation opening 3. At this time, the box body 1 does not have the ventilation and heat dissipation effect. However, at this time, a part of the filter plate 11 is located in the side box 2, which is convenient for the staff to clean or replace it. When the metering box is applied to the mining area, during the cleaning process of the filter plate 11, the ventilation opening 3 is in a closed state, avoiding dust from entering the box body 1;

[0069] When the metering box needs to start working, the cylinder 10 needs to be started to install the filter plate 11. However, during the movement of the first slider 13, it drives the first rack 74 to move away from the side box 2. The first rack 74 drives the gear 75 to rotate, and the rotation of the gear 75 drives the second rack 76 to move towards the side box 2. During the movement of the first rack 74, it drives the second slider 52 on the second unit to move. Due to the connection relationship of the telescopic assembly 6, the second slider 52 on the second unit will move synchronously. At the same time, during the movement of the second rack 76, it drives the second slider 52 on the first unit to move synchronously;

[0070] Driven by the first rack 74, the second slider 52 on the second unit moves away from the side box 2, and the two sets of sealing plates 51 on this side also move away from the side box 2 and away from the ventilation opening 3. During this process, the first rod 61 and the second rod 63 extend out of the sleeve 62 synchronously, adapting to the mutual separation of the two second sliders 52. At the same time, the first connecting rod 72 at the upper end adapts to the changes in the angle and position between the second slider 52 and the first rack 74;

[0071] At the same time, the second slider 52 on the first unit also moves towards the side box 2, and the two sets of sealing plates 51 on this side move away from the ventilation opening 3 and no longer block it. When the output end of the cylinder 10 extends to the limit position, it means that the filter plate 11 has reached the working position at this time, and the sealing plate 51 has completely moved out of the ventilation opening 3 at this time. For details, please refer to Figure 8 , which depicts the state of the metering box during operation. The filter plate 11 is located at the ventilation opening 3. While the box body 1 has the effect of ventilation and heat dissipation, it can filter dust and particulate impurities in the air;

[0072] When the filter plate 11 needs to be disassembled or cleaned, the staff needs to first restore the filter plate 11 to its initial position at this time, so the cylinder 10 needs to be closed. The output end of the cylinder 10 retracts and drives the first slider 13 to slide towards the side box 2. When the first slider 13 slides towards the side box 2, the first rack 74 slides towards the side box 2, and the second rack 76 slides away from the side box 2. At the same time, the first connecting rod 72 drives the second slider 52 on the second unit to slide towards the side box 2, and the second connecting rod 73 drives the second slider 52 on the first unit to slide away from the side box 2, and the sealing plates 51 approach each other and close the ventilation opening 3;

[0073] In summary, when the filter plate 11 is in the working state, the metering box has the effect of ventilation and heat dissipation, and at the same time, the filter plate 11 filters the dust in the air. When the filter plate 11 needs to be disassembled, the sealing plate 51 closes the ventilation opening 3, preventing dust and other impurities from entering the box body 1 during the replacement process of the filter plate 11. Especially when the metering box is used in a mining area, the filter plate 11 needs to be replaced or cleaned frequently. During the cleaning process, the box body 1 is in a closed state, effectively preventing a large amount of dust from escaping into the box body 1.

[0074] Embodiment 3: In non-high-temperature weather, the outdoor temperature has a certain cooling effect on the metering box. At this time, the metering box does not require a large ventilation opening 3 for ventilation and heat dissipation. Reducing the size of the ventilation opening 3 can also reduce the adhesion of dust to the filter plate 11 to a certain extent. However, in the above embodiments, the moving distance of the sealing plate 51 cannot be adjusted. Therefore, after the sealing plate 51 expands, it will always completely disengage from the ventilation opening 3, and the size of the air intake volume of the ventilation opening 3 of the metering box cannot be adjusted.

[0075] To solve this problem, as Figures 6-7 shown, in this embodiment, first electromagnets can be arranged at both ends of the sleeve 62 near the limiting step, and second electromagnets can be arranged at the positions of the first rod 61 and the second rod 63 near the protruding ends. The first electromagnet and the second electromagnet repel each other with the same polarity. If the moving position of the sealing plate 51 needs to be adjusted, the staff only needs to control the first electromagnet and the second electromagnet to be energized before starting the filter plate 11. When the first rod 61 and the second rod 63 move driven by the second slider 52, due to the repulsion between the electromagnets, the second electromagnet cannot cross the first electromagnet, so the extended length of the first rod 61 and the second rod 63 is limited. Further, the distance between the second sliders 52 is limited. Compared with the unrestricted state, the first sealing plate 51 can move to a position away from the ventilation opening 3 driven by the second slider 52.

[0076] After the first rod 61 and the second rod 63 are restricted, the distance between the second sliders 52 moving away from each other is relatively short. When the sealing plates 51 move away from each other to a certain distance, the first rod 61 and the second rod 63 cannot continue to extend. However, at this time, the first slider 13 continues to move, and the first connecting rod 72 and the second connecting rod 73 stretch to adapt to the continuous movement of the first rack 74 and the second rack 76. Thus, the diffusion distance of the sealing plate 51 is adjusted, and the size of the air intake volume of the ventilation opening 3 is adjusted.

[0077] Further, in this embodiment, the staff can pre-adjust the positions of the first electromagnet and the second electromagnet. The closer the first electromagnet and the second electromagnet are to each other, the shorter the diffusion distance of the sealing plate 51. And in the box body 1, a PLC control system is provided to facilitate the staff to control the energization and de-energization of the first electromagnet and the second electromagnet.

[0078] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A metering box with a ventilation and heat dissipation structure, characterized in that: Including: A box body (1) with at least two groups of electric meters (4) installed inside it; A side box (2) fixedly installed on one side of the box body (1). There is a seal opening (21) at the upper end of one side of the side box (2), and a wooden plug is provided at the seal opening (21); A ventilation opening (3) opened on the box body (1). The ventilation opening (3) includes an air inlet and an air outlet. A partition is provided between the air inlet and the air outlet, and a fan is provided at the air outlet. The fan is fixedly connected to the outer surface of the box body (1); An adjustment component (7) installed at the upper end inside the box body (1). The adjustment component (7) includes: A first slide rail (77) fixedly installed at the upper end inside the box body (1); A first slider (13) slidably installed on one side of the first slide rail (77). A support rod (12) is fixedly installed at the bottom of the first slider (13); A first spring (78) fixedly installed on one side of the inner wall of the box body (1), and the other side of the first spring (78) is fixedly connected to the first slider (13); A filter plate (11) fixedly installed at the bottom of the support rod (12). Multiple groups of filter holes are opened on the filter plate (11); A cylinder (10) is fixedly installed at the upper end inside the box body (1), and one side of the output end of the cylinder (10) is fixedly connected to the first slider (13); An activity component (5) is installed inside the box body (1). The activity component (5) includes a vertical rod (54) fixedly installed inside the box body (1). Two groups of second slide rails (53) are fixedly installed on both sides of the vertical rod (54). Two of the second slide rails (53) are inclined upward, and the other second slide rails (53) are inclined downward. The other ends of the second slide rails (53) are respectively fixedly connected to both sides inside the box body (1). The two second slide rails (53) close to the side box (2) are defined as the first unit, and the two second slide rails (53) far from the side box (2) are the second unit. The second unit is a mirror image of the first unit. Second sliders (52) are slidably installed at positions on the second slide rails (53) close to the vertical rod (54). A sealing plate (51) is fixedly installed at one end of the second slider (52) away from the second slide rail (53). One side of the sealing plate (51) away from the second slider (52) is attached to the inner wall of the box body (1). A second spring (55) is fixedly installed at one end of the second slider (52), and the other end of the second spring (55) is fixedly connected to the inner wall of the box body (1); At the upper end inside the box body (1), an upper baffle (71) is fixedly installed. On one side of the upper baffle (71), a first rack (74) is slidably installed. At the middle position of the upper baffle (71), a gear (75) is rotatably connected through a bearing. The first rack (74) meshes with the gear (75). At the bottom of one side of the upper baffle (71), a second rack (76) is also slidably installed. The second rack (76) meshes with the gear (75). One side of the first rack (74) is fixedly connected to the first slider (13). On the other side of the first rack (74), a first connecting rod (72) is rotatably installed. The other end of the first connecting rod (72) is rotatably connected to one of the second sliders (52) of the second unit. On one side of the second rack (76), a second connecting rod (73) is rotatably connected. The other end of the second connecting rod (73) is rotatably connected to one of the second sliders (52) of the first unit.

2. The metering box with a ventilation and heat dissipation structure according to claim 1, characterized in that: A part of the first connecting rod (72) is made of an elastic material and forms an elastic end. A part of the second connecting rod (73) is also made of an elastic material.

3. The metering box with a ventilation and heat dissipation structure according to claim 2, characterized in that: Between the two second sliders (52) of the first unit, a telescopic assembly (6) is installed. Between the two second sliders (52) of the second unit, the same telescopic assembly (6) is installed. On the two second sliders (52) of the first unit, a first rod (61) and a second rod (63) are respectively fixedly installed. A sleeve (62) is sleeved between the first rod (61) and the second rod (63). The inner diameter of the sleeve (62) is larger than the diameters of the first rod (61) and the second rod (63). Limiting steps are provided on both sides of the sleeve (62). At the position where the first rod (61) and the second rod (63) are close to each other, a protruding end is provided. The diameter of the protruding end is larger than the diameters of the first rod (61) and the second rod (63) and is adapted to the inner diameter of the sleeve (62).

4. The metering box with a ventilation and heat dissipation structure according to claim 3, characterized in that: At both ends of the sleeve (62) near the limiting steps, first electromagnets are provided. At the positions on the first rod (61) and the second rod (63) near the protruding end, second electromagnets are provided. The first electromagnets and the second electromagnets repel each other with the same polarity.

5. The metering box with a ventilation and heat dissipation structure according to claim 4, characterized in that: The filter plate (11) is composed of an outer frame and a plate body. The outer frame is fixedly connected to the support rod (12). The plate body is bolted inside the outer frame. The filter holes are opened on the plate body.

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