Metering box with locking and sealing device

Abstract

The invention belongs to the technical field of metering boxes, and discloses a metering box with a locking and sealing device, which comprises a metering box assembly and a locking and sealing device arranged in the metering box assembly, the metering box assembly comprises a box body, heat dissipation holes are formed in the two sides of the box body, and conical grooves are formed in the inner ends of the heat dissipation holes. The locking and sealing device comprises a fixing rod suitable for being moved up and down, a top cover is fixedly connected to the outer wall of the fixing rod, a corrugated telescopic sleeve is fixedly connected to the bottom of the top cover, a connecting cylinder is fixedly connected to the bottom of the corrugated telescopic sleeve, and the top cover, the corrugated telescopic sleeve and the connecting cylinder are connected to form a compression cavity. And the bottom of the connecting cylinder is fixedly connected with an exhaust pipe communicated with the compression cavity, and is fixedly connected with a mounting disc. The expansion air sleeves expand into the heat dissipation holes, the outer walls of the expansion air sleeves are fully attached to the inner walls of the conical grooves, the sealing effect is achieved, and it is avoided that rainwater enters the box body, short circuit, electric leakage and damage of electrical elements are caused, and safety accidents are caused.

Description

Technical Field

[0001] The present invention relates to the field of metering boxes, and more specifically, to a metering box with a locking and sealing device. Background Art

[0002] The main function of an electric power metering box is to accurately measure the power consumption of users or equipment. Through metering components such as electric energy meters, power data can be recorded in real time or regularly, providing an accurate basis for electricity bill settlement and energy management.

[0003] In the design of existing electric power metering boxes, in order to ensure the heat dissipation performance of the electrical components inside the box, heat dissipation holes are usually opened on the box body. Although these heat dissipation holes effectively solve the heat dissipation problem of the electrical components, in bad weather conditions such as rainy days, it is easy for rainwater to enter the box through the heat dissipation holes, causing short circuits of the electrical components, leakage, damage, and even leading to safety accidents. In view of this, we propose a metering box with a locking and sealing device. Summary of the Invention

[0004] This application aims to at least solve one of the technical problems existing in the prior art. For this purpose, this application proposes a metering box with a locking and sealing device. By expanding the expansion air sleeve and expanding it into the heat dissipation hole, the outer wall of the expansion air sleeve is fully attached to the inner wall of the tapered groove to achieve a sealing effect; preventing rainwater from entering the interior of the box body, causing short circuits, leakage, damage of electrical components, and even leading to safety accidents.

[0005] A metering box with a locking and sealing device includes a metering box assembly and a locking and sealing device installed inside it; The metering box assembly includes a box body, and heat dissipation holes are opened on both sides of the box body, and tapered grooves are opened at the inner ends of the heat dissipation holes; The locking and sealing device includes a fixed rod adapted to be moved up and down, a top cover is fixedly connected to the outer wall of the fixed rod, a corrugated telescopic sleeve is fixedly connected to the bottom of the top cover, a connecting cylinder is fixedly connected to the bottom of the corrugated telescopic sleeve, and the top cover, the corrugated telescopic sleeve and the connecting cylinder are connected to form a compression cavity; An exhaust pipe communicating with the compression cavity is fixedly connected to the bottom of the connecting cylinder, an installation disc is fixedly connected to the bottom of the connecting cylinder, the bottom of the exhaust pipe is fixedly connected to the inner wall of the installation disc, an expansion air sleeve is fixedly connected to the inner wall of the installation disc, the expansion cavity of the expansion air sleeve communicates with the exhaust pipe, a positioning groove is opened at the bottom of the installation disc, a limiting arc plate is fixedly connected to the inner wall of the box body, and the positioning groove is adapted to be clamped with the limiting arc plate to limit the movement of the installation disc. The expansion air sleeve is adapted to be expanded when the positioning groove and the limiting arc plate are clamped to be hermetically connected with the tapered groove, thereby sealing the corresponding heat dissipation hole.

[0006] Preferably, two chutes are provided on both sides of the inner wall of the box body. A first slide bar is fixedly connected to the inner wall of each chute. Limiting grooves are provided on both sides of the inner wall of the box body. The connecting cylinder is slidably connected to the inner wall of the corresponding limiting groove. A slider corresponding to the first slide bar is fixedly connected to the outer wall of the connecting cylinder. The slider is slidably connected to the corresponding first slide bar. A second telescopic sleeve is fixedly connected to the top of the slider. Slide holes are provided on the outer wall of the second telescopic sleeve. A limiting block is slidably connected to the inner wall of each slide hole. A second telescopic rod is slidably connected to the inner wall of each second telescopic sleeve. The end of the second telescopic rod is fixedly connected to the limiting block. A connecting plate corresponding to the second telescopic rod is fixedly connected to the outer wall of the top cover. The connecting plate is fixedly connected to the corresponding second telescopic rod. A slide plate is fixedly connected to the outer wall of the corrugated telescopic sleeve. The slide plate is slidably connected to the corresponding second telescopic rod. A piston is slidably connected to the chamber of the corrugated telescopic sleeve where a compression chamber is formed. The top of the piston is fixedly connected to a fixed rod. A second spring is provided in the connecting cylinder. The top of the second spring abuts against the piston, and the bottom of the second spring abuts against the bottom inner wall of the connecting cylinder.

[0007] Preferably, the locking and sealing device further includes an electric push rod. The electric push rod is fixedly connected to the inner wall of the box body. A support rod is fixedly connected to the output end of the electric push rod. Extension shafts are respectively fixedly connected to both ends of the support rod. A first telescopic rod is rotatably connected to the outer wall of the extension shaft. A first telescopic sleeve is slidably connected to the outer wall of the first telescopic rod. A connecting shaft is fixedly connected to the outer wall of the first telescopic sleeve. The end of the connecting shaft penetrates through the box body and is rotatably connected thereto. A sliding ring is slidably connected to the outer wall of the first telescopic rod. The outer wall of the sliding ring is fixedly connected to the corresponding fixed rod; Rotatable balls are embedded at the ends of the extension shafts. Rolling grooves are provided on both sides of the inner wall of the box body. The balls are in rolling connection with the corresponding rolling grooves.

[0008] Preferably, the heat dissipation hole is a tapered hole that gradually contracts from the inside to the outside. The diameter of the heat dissipation hole decreases from the inside to the outside. A filter screen is installed on the inner wall of the heat dissipation hole. A plurality of discharge grooves are provided on the circumferential outer wall of the filter screen.

[0009] Preferably, installation grooves are provided on both sides of the box body. Second sealing strips are fixedly connected to the inner walls of the installation grooves. Two rotating shafts are rotatably connected to the outer wall of the box body.

[0010] Preferably, the metering box assembly further includes two box doors, which are connected to the box body through corresponding rotating shafts. A convex portion is formed on the outer side of the box door, and the convex portion is in pressing contact with the corresponding second sealing strip. A first sealing strip is fixedly connected to the inner sides of the two box doors, and an anti-theft lock is installed between the inner sides of the two box doors. Activity holes are opened at the top and bottom of the outer side of the box door. A second sliding rod is fixedly connected to the inner wall of the activity hole. A first spring is sleeved on the outer wall of the second sliding rod. The end of the rotating shaft penetrates through the activity hole and extends to the outside thereof. The second sliding rod penetrates through the rotating shaft and is slidably connected thereto. One end of the first spring abuts against the rotating shaft, and the other end of the first spring abuts against the inner wall of the box door.

[0011] Preferably, it further includes a drainage assembly installed on the top of the metering box assembly. The drainage assembly includes a box top. A first arc groove and a second arc groove are opened at the bottom of the box top. A drainage edge is formed at the connection of the first arc groove and the second arc groove. The edge of the second arc groove away from the drainage edge is a first inclined edge, and the edge of the box top side wall intersecting with the bottom end of the first inclined edge is a second inclined edge. Both the first inclined edge and the second inclined edge are inclined. The lower ends of the first inclined edge and the second inclined edge are the intersection ends. The drainage edge is inclined and is located between the first arc groove and the second arc groove.

[0012] Preferably, the box top is fixedly installed on the top of the box body. A water collecting groove is opened at the top of the box top. A drainage hole communicating with the water collecting groove is opened on the box top, and the drainage hole penetrates through the second arc groove and communicates with it.

[0013] Preferably, an installation hole is opened at the top of the box top, and the installation hole communicates with the drainage hole. A water flow sensor is provided in the installation hole. A blocking rod is slidably connected to the inner wall of the drainage hole. A linkage mechanism is provided between the connecting shaft and the blocking rod. The connecting shaft is adapted to drive the blocking rod to slide in the drainage hole through the linkage mechanism to open or close the communication channel between the drainage hole and the second arc groove; The metering box further includes a controller, which is connected to the water flow sensor and the electric push rod. The controller is adapted to control the action of the electric push rod according to the signal fed back by the water flow sensor. The linkage mechanism includes a fixed block, which is fixedly connected to the blocking rod. A first arm is rotatably connected to the outer wall of the fixed block. The end of the first arm is rotatably connected to a second arm, and the second arm is fixedly connected to the connecting shaft.

[0014] Preferably, the side wall of the box body is fixedly connected with a water pipe arranged corresponding to the second arc groove, the filter screen is slidably connected in the heat dissipation hole, the outer wall of the filter screen can be fixedly connected with a plurality of fan blades in a ring array structure, the inner wall of the filter screen is rotatably connected with a support shaft, the end of the support shaft is fixedly connected with a push plate, the two ends of the push plate respectively extend into the grooves on the inner wall of the heat dissipation hole, a third sliding rod is fixedly connected in the grooves, the outer wall of the third sliding rod is sleeved with a third spring, the end of the third sliding rod passes through the push plate and is slidably connected thereto, one end of the third spring abuts against the box body, and the other end of the third spring abuts against the push plate, the drainage hole passes through the second arc groove to form an outlet, and the outlet is communicated with the inlet of the corresponding water pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The fixed rod drives the top cover and the piston to move. At this time, the connecting tube slides downward along the limiting groove, and the connecting tube drives the sliding block to slide along the outer wall of the first sliding rod. When the connecting tube moves, it drives the mounting plate to move until the positioning groove at the bottom of the mounting plate is stuck on the limiting arc plate. At this time, the mounting plate is located at the heat dissipation hole position and cannot move downward. The fixed rod continues to move until the piston slides into the connecting tube, and the second spring is compressed. When the top cover moves, the second telescopic rod is driven by the connecting plate to slide along the inner wall of the second telescopic sleeve, so that the corrugated telescopic sleeve is compressed, and the air between the connecting tube and the corrugated telescopic sleeve is compressed and discharged into the expansion gas sleeve on the mounting plate through the exhaust pipe. At this time, the expansion gas sleeve expands and expands into the heat dissipation hole. The outer wall of the expansion gas sleeve is fully fitted with the inner wall of the cone groove to achieve a sealing effect. This design can prevent rainwater from entering the box body under severe weather conditions such as rainy days, causing electrical components to short-circuit, leak, damage, and even cause safety accidents.

[0016] 2. The bellows shrinks and stacks during the compression process, which discharges the air in the bellows. At the same time, it prevents the air in the connecting tube from entering the top of the piston when the piston stops moving, causing the amount of gas in the mounting plate to decrease, resulting in a loose seal between the expansion sleeve and the cone groove, causing rainwater to enter the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the overall structure of the metering box assembly of the present invention; Figure 4 It is a schematic diagram of the internal structure of the box body of the present invention; Figure 5 It is a schematic diagram of the partial structure of the box body of the present invention; Figure 6 It is a schematic diagram of the overall structure of the filter net of the present invention; Figure 7 For the present invention Figure 4 The enlarged view at position A; Figure 8 It is a schematic diagram of the partial structure of the box door of the present invention; Figure 9 It is a schematic diagram of the installation structure of the second sealing strip of the present invention; Figure 10 It is a schematic diagram of the overall structure of the drainage assembly of the present invention; Figure 11 It is a schematic diagram of the partial structure of the box top of the present invention; Figure 12 For the present invention Figure 10 The enlarged view at position B; Figure 13 It is a schematic diagram of the overall structure of the locking and sealing device of the present invention; Figure 14 It is a schematic diagram of the installation structure of the mounting plate of the present invention; Figure 15 It is a schematic diagram of the installation structure of the piston of the present invention; Figure 16 It is a schematic diagram of the installation structure of the expansion gas sleeve of the present invention; Figure 17 It is a schematic diagram of the structure of the limiting arc plate of the present invention; Figure 18 For the present invention Figure 13 The enlarged view at position C; Figure 19 It is a schematic diagram of the installation structure of the fan blade of the present invention; Figure 20 It is a schematic diagram of the installation structure of the push plate of the present invention.

[0019] Explanation of the reference numerals in the figure: 1. Metering box assembly; 101. Box body; 102. Heat dissipation holes; 103. Tapered groove; 104. Rolling groove; 105. Installation groove; 106. Limiting groove; 107. Slide groove; 108. First sliding rod; 109. Filter net; 110. Drainage groove; 111. Rotating shaft; 112. Box door; 113. First sealing strip; 114. Anti-theft lock; 115. Moving hole; 116. Second sliding rod; 117. First spring; 118. Second sealing strip; 2. Drainage component; 201. Top of the box; 202. Water collecting tank; 203. Mounting hole; 204. Drainage hole; 205. First arc groove; 206. Second arc groove; 2061. First inclined edge; 207. Drainage edge; 208. Water flow sensor; 209. Plug rod; 210. Fixed block; 211. First support arm; 212. Second support arm; 213. Second inclined edge; 3. Locking and sealing device; 301. Electric push rod; 302. Support rod; 303. Extension shaft; 304. Ball; 305. First telescopic rod; 306. First telescopic sleeve; 307. Connecting shaft; 308. Sliding ring; 309. Fixed rod; 310. Top cover; 311. Corrugated telescopic sleeve; 312. Connecting cylinder; 313. Slide block; 314. Second telescopic sleeve; 315. Slide hole; 316. Limit block; 317. Second telescopic rod; 318. Connecting plate; 319. Slide plate; 320. Piston; 321. Second spring; 322. Exhaust pipe; 323. Mounting plate; 324. Expanding gas sleeve; 325. Positioning groove; 326. Limit arc plate; 4. Water conduit; 5. Fan blade; 6. Support shaft; 7. Third slide bar; 8. Third spring; 9. Push plate. Specific implementation mode

[0020] To make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are 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 belong to the scope of protection of the present application. The specific implementation mode of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0021] Example 1: As Figures 1 - 20 shown, a metering box with a locking and sealing device includes a metering box assembly 1 and a locking and sealing device 3 installed inside it; The metering box assembly 1 includes a box body 101, and heat dissipation holes 102 are opened on both sides of the box body 101. A tapered groove 103 is opened at the inner end of the heat dissipation holes 102; The locking and sealing device 3 includes a fixed rod 309 adapted to be moved up and down, a top cover 310 fixedly connected to the outer wall of the fixed rod 309, a corrugated expansion sleeve 311 fixedly connected to the bottom of the top cover 310, and a connecting cylinder 312 fixedly connected to the bottom of the corrugated expansion sleeve 311; the top cover 310, the corrugated expansion sleeve 311 and the connecting cylinder 312 are connected to form a compression chamber, an exhaust pipe 322 communicating with the compression chamber is fixedly connected to the bottom of the connecting cylinder 312, a mounting plate 323 is fixedly connected to the bottom of the connecting cylinder 312, the bottom of the exhaust pipe 322 is fixedly connected to the inner wall of the mounting plate 323, an expansion gas sleeve 324 is fixedly connected to the inner wall of the mounting plate 323, the expansion chamber of the expansion gas sleeve 324 communicates with the exhaust pipe 322, a positioning groove 325 is formed in the bottom of the mounting plate 323, a limiting arc plate 326 is fixedly connected to the inner wall of the box body 101, and the positioning groove 325 is adapted to be clamped and matched with the limiting arc plate 326 to limit the movement of the mounting plate 323; the expansion gas sleeve 324 is adapted to be expanded when the positioning groove 325 and the limiting arc plate 326 are clamped to be hermetically connected with the conical groove 103, so as to seal the corresponding heat dissipation hole 102; In the present invention, through the design of the conical groove 103, the friction force between the expansion gas sleeve 324 and the inner edge of the heat dissipation hole 102 during the expansion of the expansion gas sleeve 324 can be reduced, and at the same time, the contact area between the expansion gas sleeve 324 and the heat dissipation hole 102 can be increased, so as to improve the sealing accuracy and effect. In addition, the conical groove 103 can also reduce stress concentration and avoid scratching the expansion gas sleeve 324 by the edge.

[0022] The design of the limiting arc plate 326 and the positioning groove 325 can first position the mounting plate 323, and then expand the expansion gas sleeve 324, which can improve the sealing accuracy between the expansion gas sleeve 324 and the heat dissipation hole 102.

[0023] Specifically, two chutes 107 are provided on both sides of the inner wall of the box body 101, and a first sliding rod 108 is fixedly connected to the inner wall of each chute 107; limiting grooves 106 are provided on both sides of the inner wall of the box body 101, and the connecting cylinder 312 is slidably connected to the inner wall of the corresponding limiting groove 106. The arrangement of the limiting groove 106 can limit the connecting cylinder 312. A slider 313 corresponding to the first sliding rod 108 is fixedly connected to the outer wall of the connecting cylinder 312, and the slider 313 is slidably connected to the first sliding rod 108. The arrangement of the slider 313 and the corresponding first sliding rod 108 can limit the distance between the mounting plate 323 and the inner wall of the box body 101, avoiding the movement of the mounting plate 323 when the expansion air sleeve 324 expands and affecting the sealing effect. A second telescopic sleeve 314 is fixedly connected to the top of the slider 313. Slide holes 315 are provided on the outer wall of the second telescopic sleeve 314, and a limiting block 316 is slidably connected to the inner wall of the slide hole 315. A second telescopic rod 317 is slidably connected to the inner wall of each second telescopic sleeve 314, and the end of the second telescopic rod 317 is fixedly connected to the limiting block 316. A connecting plate 318 corresponding to the second telescopic rod 317 is fixedly connected to the outer wall of the top cover 310, and the connecting plate 318 is fixedly connected to the corresponding second telescopic rod 317. A sliding plate 319 is fixedly connected to the outer wall of the corrugated telescopic sleeve 311, and the sliding plate 319 is slidably connected to the corresponding second telescopic rod 317. A piston 320 is slidably connected to the chamber in the corrugated telescopic sleeve 311 where a compression chamber is formed. The top of the piston 320 is fixedly connected to the fixed rod 309. A second spring 321 is provided in the connecting cylinder 312. The top end of the second spring 321 abuts against the piston 320, and the bottom of the second spring 321 abuts against the bottom inner wall of the connecting cylinder 312; The amount of gas inside the mounting plate 323 remains constant to provide good sealing performance. In the prior art, the piston moves within a sleeve with a fixed shape. When the piston compresses the gas under wear conditions, some of the gas in the cylinder will enter the cylinder above the piston, resulting in insufficient intake air volume; In the present invention, by installing the corrugated telescopic sleeve 311 on the top of the connecting cylinder 312, the fixed rod 309 drives the top cover 310 and the piston 320 to move, causing the corrugated telescopic sleeve 311 to be fully compressed, which can prevent the air below the connecting cylinder 312 from entering the corrugated telescopic sleeve 311 above the piston 320, resulting in a reduction in the amount of gas entering the mounting plate 323 and causing the sealing between the expansion air sleeve 324 and the tapered groove 103 to be not tight, leading to rainwater entering the box body 101.

[0024] Specifically, as Figures 13 - 18As shown, the locking and sealing device 3 further includes an electric push rod 301. The electric push rod 301 is fixedly connected to the inner wall of the box body 101. The output end of the electric push rod 301 is fixedly connected to a support rod 302. Both ends of the support rod 302 are respectively fixedly connected to an extension shaft 303. The outer wall of the extension shaft 303 is rotatably connected to a first telescopic rod 305. The outer wall of the first telescopic rod 305 is slidably connected to a first telescopic sleeve 306. The outer wall of the first telescopic sleeve 306 is fixedly connected to a connecting shaft 307. The end of the connecting shaft 307 penetrates through the box body 101 and is rotatably connected thereto. The outer wall of the first telescopic rod 305 is slidably connected to a sliding ring 308. The outer wall of the sliding ring 308 is fixedly connected to the corresponding fixed rod 309. The arrangement of the first telescopic rod 305 and the first telescopic sleeve 306 can arrange some structures in the locking and sealing device 3 at the inner side wall position of the box body 101, which is convenient for the installation of electrical components inside the box body 101, and at the same time ensures that the fixed rod 309 can move a relatively long distance.

[0025] Specifically, rotatable balls 304 are embedded at both ends of the extension shaft 303. Rolling grooves 104 are formed on both sides of the inner wall of the box body 101. The balls 304 are in rolling connection with the corresponding rolling grooves 104. The arrangement of the balls 304 can improve the stability of the support rod 302 when it moves.

[0026] Specifically, as Figure 5 and Figure 6 shown, the heat dissipation holes 102 are tapered holes that gradually contract from the inside to the outside. The diameter of the heat dissipation holes 102 decreases from the inside to the outside. A filter net 109 is installed on the inner wall of the heat dissipation holes 102. A plurality of discharge grooves 110 are formed on the circumferential outer wall of the filter net 109. This design can enable the rainwater at the periphery of the heat dissipation holes 102 to be discharged through the tapered wall of the tapered hole and the discharge grooves 110.

[0027] Specifically, as Figure 4 and Figure 9 shown, mounting grooves 105 are formed on both sides of the box body 101. Second sealing strips 118 are fixedly connected in the mounting grooves 105. Two rotating shafts 111 are rotatably connected to the outer wall of the box body 101.

[0028] Specifically, as Figure 8 and Figure 9As shown, the metering box assembly 1 further includes two box doors 112. The box doors 112 are connected to the box body 101 through corresponding rotating shafts 111. A convex portion is formed by outward convexity on the outer side of the box door 112. The convex portion is in pressing contact with the corresponding second sealing strip 118. The pressing contact between the convex portion and the second sealing strip 118 can improve the sealing performance between the box door 112 and the box body 101, and prevent rainwater from entering the interior of the box body 101 along the gap between the box door 112 and the box body 101 under the action of wind; a first sealing strip 113 is fixedly connected to the inner sides of the two box doors 112. The first sealing strip 113 can improve the sealing performance between the box doors 112. An anti-theft lock 114 is installed between the inner sides of the two box doors 112. Activity holes 115 are formed at the top and bottom of the outer side of the box door 112. A second sliding rod 116 is fixedly connected to the inner wall of the activity hole 115. A first spring 117 is sleeved on the outer wall of the second sliding rod 116. The end of the rotating shaft 111 penetrates through the activity hole 115 and extends to its outer side. The second sliding rod 116 penetrates through the rotating shaft 111 and is slidably connected to it. One end of the first spring 117 abuts against the rotating shaft 111, and the other end of the first spring 117 abuts against the inner wall of the box door 112; under the elastic force of the first spring 117, when closed, it can make the side wall of the box door 112 and the first sealing strip 113 be in full pressing contact, and at the same time, the convex portion of the box door 112 and the second sealing strip 118 will be fully pressed, improving the sealing effect.

[0029] Specifically, as Figure 1 、 Figure 10 and Figure 11 shown, the metering box further includes a drainage assembly 2 installed on the top of the metering box assembly 1. The drainage assembly 2 includes a box top 201. A first arc groove 205 and a second arc groove 206 are formed at the bottom of the box top 201. A drainage edge 207 is formed at the connection of the first arc groove 205 and the second arc groove 206. The edge of the second arc groove 206 away from the drainage edge 207 is a first inclined edge 2061. The edge of the side wall of the box top 201 intersecting with the bottom end of the first inclined edge 2061 is a second inclined edge 213. Both the first inclined edge 2061 and the second inclined edge 213 are inclined. The first inclined edge 2061 extends from the initial end to the connection with the second inclined edge 213 and the height decreases. The second inclined edge 213 extends from the initial end to the connection with the first inclined edge 2061 and the height decreases. The lower ends of the first inclined edge 2061 and the second inclined edge 213 are the intersection ends. The drainage edge 207 is inclined. The drainage edge 207 extends from the initial end to the bottom end of the first inclined edge 2061 and the height decreases. The drainage edge 207 is located between the first arc groove 205 and the second arc groove 206; the settings of the drainage edge 207, the first inclined edge 2061 and the second inclined edge 213 can make rainwater drip along their lower ends, preventing rainwater from flowing into the box body 101 along the edges.

[0030] Specifically, as Figure 11As shown in the figure, the top 201 of the box is fixedly installed on the top of the box body 101. A water collecting groove 202 is provided on the top of the top 201 of the box. A drain hole 204 communicating with the water collecting groove 202 is provided on the top 201 of the box. The drain hole 204 penetrates through and communicates with the second arc groove 206.

[0031] Specifically, as Figure 12 shown in the figure, an installation hole 203 is provided on the top of the top 201 of the box. The installation hole 203 communicates with the drain hole 204. A water flow sensor 208 is provided in the installation hole 203. A plug rod 209 is slidably connected in the drain hole 204. A linkage mechanism is provided between the connecting shaft 307 and the plug rod 209. The connecting shaft 307 is adapted to drive the plug rod 209 to slide in the drain hole 204 through the linkage mechanism to open or close the communication channel between the drain hole 204 and the second arc groove 206. The metering box further includes a controller, and the controller is connected to the water flow sensor 208 and the electric push rod 301. The controller is adapted to control the action of the electric push rod 301 according to the signal fed back by the water flow sensor 208.

[0032] Specifically, the linkage mechanism includes a fixed block 210. The fixed block 210 is fixedly connected to the plug rod 209. A first support arm 211 is rotatably connected to the outer wall of the fixed block 210. A second support arm 212 is rotatably connected to the end of the first support arm 211. The second support arm 212 is fixedly connected to the connecting shaft 307.

[0033] Working principle: The electrical components inside the box body 101 dissipate heat through the mesh holes on the filter screen 109, and the filter screen 109 filters the dust in the external air; The water collecting groove 202 on the top of the top 201 of the box can collect rainwater centrally. The rapidly accumulating rainwater enters the drain hole 204. The water flow sensor 208 senses the rainwater. At this time, the controller inside the box body 101 controls the electric push rod 301 to operate. The output end of the electric push rod 301 contracts to drive the support rod 302 to move. The support rod 302 drives the first telescopic rod 305 to move through the extension shaft 303. The extension shaft 303 drives the ball 304 to roll along the inner wall of the rolling groove 104. The first telescopic rod 305 slides along the inner wall of the first telescopic sleeve 306. The first telescopic sleeve 306 drives the connecting shaft 307 to rotate; When the connecting shaft 307 rotates, it drives the second support arm 212 to rotate. The second support arm 212 drives the plug rod 209 to slide outward along the inner wall of the drain hole 204 through the first support arm 211. At this time, the rainwater inside the water collecting groove 202 can be discharged into the second arc groove 206 through the drain hole 204 and discharged through the second arc groove 206; Meanwhile, when the first telescopic rod 305 moves, it drives the sliding ring 308 to move. The sliding ring 308 drives the fixed rod 309 to move. Under the elastic support of the second spring 321, the fixed rod 309 drives the top cover 310 and the piston 320 to move. At this time, the connecting cylinder 312 slides downward along the limiting groove 106. The connecting cylinder 312 drives the slider 313 to slide along the outer wall of the first sliding rod 108. When the connecting cylinder 312 moves, it drives the mounting plate 323 to move until the positioning groove 325 at the bottom of the mounting plate 323 is stuck on the limiting arc plate 326. At this time, the mounting plate 323 is located at the position of the heat dissipation hole 102 and cannot move downward; The fixed rod 309 continues to move until the piston 320 slides into the connecting cylinder 312 and the second spring 321 is compressed. When the top cover 310 moves, it drives the second telescopic rod 317 to slide along the inner wall of the second telescopic sleeve 314 through the connecting plate 318, so that the corrugated telescopic sleeve 311 is compressed. The air between the connecting cylinder 312 and the corrugated telescopic sleeve 311 is compressed and discharged into the expansion air sleeve 324 on the mounting plate 323 through the exhaust pipe 322. At this time, the expansion air sleeve 324 expands and expands into the heat dissipation hole 102. The outer wall of the expansion air sleeve 324 is fully attached to the inner wall of the conical groove 103 to achieve a sealing effect and prevent rainwater from entering the inside of the box body 101; If rainwater enters from the outside into the heat dissipation hole 102, blocked by the expansion air sleeve 324, the rainwater is discharged from the heat dissipation hole 102 and the drain groove 110 into the box body 101; During the compression process of the corrugated telescopic sleeve 311, it shrinks and stacks, discharging the air inside the corrugated telescopic sleeve 311. At the same time, when the piston 320 stops moving, it can prevent the air in the connecting cylinder 312 from entering above the piston 320, resulting in a reduction in the gas volume inside the mounting plate 323, leading to insufficient sealing between the expansion air sleeve 324 and the conical groove 103 and causing rainwater to enter the box body 101; After the rain stops, the controller controls the electric push rod 301 to operate. The output end of the electric push rod 301 extends, pushing the support rod 302 to move. The support rod 302 drives the first telescopic rod 305 to slide into the first telescopic sleeve 306. At this time, the first telescopic sleeve 306 drives the connecting shaft 307 to rotate in the reverse direction. The sliding ring 308 drives the fixed rod 309 to move upward, thereby pulling the top cover 310 and the piston 320 to move. Under the elastic force of the second spring 321, the corrugated telescopic sleeve 311 is extended, increasing the space between the connecting cylinder 312 and the corrugated telescopic sleeve 311. At this time, the air inside the mounting plate 323 enters the connecting cylinder 312. At this time, the expansion air sleeve 324 contracts and moves out of the heat dissipation hole 102. Until the corrugated telescopic sleeve 311 is fully extended, the fixed rod 309 continues to move, driving the connecting cylinder 312 and the mounting plate 323 to move upward and away from the end of the heat dissipation hole 102, facilitating heat dissipation; In addition, in this embodiment, the box door 112 is opened by the anti-theft lock 114. At this time, under the pulling force of the first spring 117, the rotating shaft 111 slides towards the other end of the second sliding rod 116, and the convex part of the box door 112 disengages from the contact with the second sealing strip 118. When closing the box door 112, the box door 112 squeezes the first sealing strip 113 mutually, the rotating shaft 111 slides reversely along the second sliding rod 116, and the first spring 117 is stretched, so that the convex part of the box door 112 squeezes the second sealing strip 118, thereby achieving the sealing effect.

[0034] Embodiment 2: The structure of this embodiment is basically the same as that of Embodiment 1, the difference is that: as Figure 19 and Figure 20 shown, a water guide pipe 4 corresponding to the second arc groove 206 is fixedly connected to the side wall of the box body 101. The filter screen 109 is slidably connected in the heat dissipation hole 102. A plurality of fan blades 5 can be fixedly connected to the outer wall of the filter screen 109 in an annular array structure. A support shaft 6 is rotatably connected to the inner wall of the filter screen 109. A push plate 9 is fixedly connected to the end of the support shaft 6. Both ends of the push plate 9 extend into the grooves on the inner wall of the heat dissipation hole 102 respectively. Third sliding rods 7 are fixedly connected in the grooves. Third springs 8 are sleeved on the outer walls of the third sliding rods 7. The ends of the third sliding rods 7 penetrate through the push plate 9 and are slidably connected therewith. One end of the third spring 8 abuts against the box body 101, and the other end of the third spring 8 abuts against the push plate 9. The part where the drain hole 204 penetrates through the second arc groove 206 forms an outlet, and the outlet is communicated with the inlet of the corresponding water guide pipe 4.

[0035] When the expansion air sleeve 324 expands into the heat dissipation hole 102, the convex part of the expansion air sleeve 324 will exert a squeezing force on the push plate 9 towards the outside of the heat dissipation hole 102. At this time, the third spring 8 acts on the push plate 9 in the reverse direction, and the push plate 9 acts on the middle part of the expansion air sleeve 324, so that the gas in the middle part of the expansion air sleeve 324 is squeezed towards the periphery of the expansion air sleeve 324, increasing the contact force with the inner wall of the conical groove 103 and improving the sealing effect.

[0036] At the same time, the expanding expansion air sleeve 324 will push the push plate 9 to slide along the third sliding rod 7, moving the filter screen 109 to the outside of the box body 101. At this time, the filter screen 109 is located below the drain hole of the water guide pipe 4, and the water discharged through the water guide pipe 4 can wash the filter screen 109 and the fan blades 5.

[0037] The fan blades 5 drive the filter screen 109 to rotate, further increasing the contact area between the filter screen 109 and the rainwater and improving the cleaning effect.

[0038] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A metering box with a locking and sealing device, characterized in that Comprising: A metering box assembly (1) and a locking and sealing device (3) installed inside it; The metering box assembly (1) includes a box body (101), heat dissipation holes (102) are opened on both sides of the box body (101), and a tapered groove (103) is opened at the inner end of the heat dissipation holes (102); The locking and sealing device (3) includes a fixed rod (309) adapted to be moved up and down, a top cover (310) is fixedly connected to the outer wall of the fixed rod (309), a corrugated telescopic sleeve (311) is fixedly connected to the bottom of the top cover (310), a connecting cylinder (312) is fixedly connected to the bottom of the corrugated telescopic sleeve (311), and the top cover (310), the corrugated telescopic sleeve (311) and the connecting cylinder (312) are connected to form a compression chamber; An exhaust pipe (322) communicating with the compression chamber is fixedly connected to the bottom of the connecting cylinder (312), a mounting plate (323) is fixedly connected to the bottom of the connecting cylinder (312), the bottom of the exhaust pipe (322) is fixedly connected to the inner wall of the mounting plate (323), an expansion air sleeve (324) is fixedly connected to the inner wall of the mounting plate (323), the expansion chamber of the expansion air sleeve (324) is communicated with the exhaust pipe (322), a positioning groove (325) is opened at the bottom of the mounting plate (323), a limiting arc plate (326) is fixedly connected to the inner wall of the box body (101), the positioning groove (325) is adapted to be engaged with the limiting arc plate (326) to limit the movement of the mounting plate (323), and the expansion air sleeve (324) is adapted to be expanded when the positioning groove (325) and the limiting arc plate (326) are engaged to be hermetically connected to the tapered groove (103), thereby sealing the corresponding heat dissipation hole (102).

2. The metering box with a locking and sealing device according to claim 1, characterized in that: On both sides of the inner wall of the box body (101), two sliding grooves (107) are provided. On the inner walls of the sliding grooves (107), first sliding rods (108) are fixedly connected. On both sides of the inner wall of the box body (101), limiting grooves (106) are provided. The connecting cylinder (312) is slidably connected with the inner wall of the corresponding limiting groove (106). On the outer wall of the connecting cylinder (312), a slider (313) corresponding to the first sliding rod (108) is fixedly connected. The slider (313) is slidably connected with the corresponding first sliding rod (108). On the top of the slider (313), a second telescopic sleeve (314) is fixedly connected. On the outer walls of the second telescopic sleeves (314), sliding holes (315) are provided. In the inner walls of the sliding holes (315), limiting blocks (316) are slidably connected. In the inner walls of the second telescopic sleeves (314), second telescopic rods (317) are slidably connected. The ends of the second telescopic rods (317) are fixedly connected with the limiting blocks (316). On the outer wall of the top cover (310), a connecting plate (318) corresponding to the second telescopic rod (317) is fixedly connected. The connecting plate (318) is fixedly connected with the corresponding second telescopic rod (317). On the outer wall of the corrugated telescopic sleeve (311), a sliding plate (319) is fixedly connected. The sliding plate (319) is slidably connected with the corresponding second telescopic rod (317). Inside the corrugated telescopic sleeve (311), a piston (320) is slidably connected in the chamber forming a compression chamber. The top of the piston (320) is fixedly connected with a fixed rod (309). Inside the connecting cylinder (312), a second spring (321) is provided. The top end of the second spring (321) abuts against the piston (320), and the bottom end of the second spring (321) abuts against the bottom inner wall of the connecting cylinder (312).

3. The metering box with a locking and sealing device according to claim 2, characterized in that: The locking and sealing device (3) further includes an electric push rod (301). The electric push rod (301) is fixedly connected with the inner wall of the box body (101). The output end of the electric push rod (301) is fixedly connected with a support rod (302). At both ends of the support rod (302), extension shafts (303) are respectively fixedly connected. On the outer walls of the extension shafts (303), first telescopic rods (305) are rotatably connected. On the outer walls of the first telescopic rods (305), first telescopic sleeves (306) are slidably connected. On the outer wall of the first telescopic sleeve (306), a connecting shaft (307) is fixedly connected. The end of the connecting shaft (307) penetrates through the box body (101) and is rotatably connected therewith. On the outer wall of the first telescopic rod (305), a sliding ring (308) is slidably connected. The outer wall of the sliding ring (308) is fixedly connected with the corresponding fixed rod (309); At the ends of the extension shafts (303), rotatable balls (304) are embedded. On both sides of the inner wall of the box body (101), rolling grooves (104) are provided. The balls (304) are in rolling connection with the corresponding rolling grooves (104).

4. The metering box with a locking and sealing device according to claim 3, characterized in that: The heat dissipation holes (102) are conical holes that gradually contract from the inside to the outside, the diameters of the heat dissipation holes (102) decrease from the inside to the outside, a filter net (109) is installed on the inner wall of the heat dissipation holes (102), and a plurality of drainage grooves (110) are formed on the circumferential outer wall of the filter net (109).

5. The metering box with a locking and sealing device according to claim 4, characterized in that: Installation grooves (105) are formed on both sides of the box body (101), second sealing strips (118) are fixedly connected to the inner walls of the installation grooves (105), and two rotating shafts (111) are rotatably connected to the outer wall of the box body (101).

6. The metering box with a locking and sealing device according to claim 5, characterized in that: The metering box assembly (1) further includes two box doors (112), the box doors (112) are connected to the box body (101) through corresponding rotating shafts (111), a convex portion is formed on the outer side of the box doors (112) and is in pressing contact with the corresponding second sealing strip (118), a first sealing strip (113) is fixedly connected to the inner sides of the two box doors (112), an anti-theft lock (114) is installed between the inner sides of the two box doors (112), movable holes (115) are formed at the top and bottom of the outer side of the box doors (112), second sliding rods (116) are fixedly connected to the inner walls of the movable holes (115), a first spring (117) is sleeved on the outer wall of the second sliding rods (116), the end of the rotating shaft (111) penetrates through the movable hole (115) and extends to the outside thereof, the second sliding rod (116) penetrates through the rotating shaft (111) and is slidably connected thereto, one end of the first spring (117) abuts against the rotating shaft (111), and the other end of the first spring (117) abuts against the inner wall of the box door (112).

7. The metering box with a locking and sealing device according to claim 6, characterized in that: It further includes a drainage assembly (2) installed on the top of the metering box assembly (1), the drainage assembly (2) includes a box top (201), a first arc groove (205) and a second arc groove (206) are formed at the bottom of the box top (201), a drainage edge (207) is formed at the connection of the first arc groove (205) and the second arc groove (206), the edge on one side of the second arc groove (206) away from the drainage edge (207) is a first inclined edge (2061), the edge on the side wall of the box top (201) intersecting with the bottom end of the first inclined edge (2061) is a second inclined edge (213), both the first inclined edge (2061) and the second inclined edge (213) are inclined, the lower ends of the first inclined edge (2061) and the second inclined edge (213) are intersecting ends, the drainage edge (207) is inclined, and the drainage edge (207) is located between the first arc groove (205) and the second arc groove (206).

8. The metering box with a locking and sealing device according to claim 7, characterized in that: The box top (201) is fixedly installed on the top of the box body (101), a water collecting groove (202) is formed at the top of the box top (201), a drainage hole (204) communicating with the water collecting groove (202) is formed on the box top (201), and the drainage hole (204) penetrates through the second arc groove (206) and communicates with it.

9. The metering box with a locking and sealing device according to claim 8, characterized in that: An installation hole (203) is formed at the top of the box top (201). The installation hole (203) is communicated with a drain hole (204). A water flow sensor (208) is arranged in the installation hole (203). A plug rod (209) is slidably connected to the inner wall of the drain hole (204). A linkage mechanism is arranged between the connecting shaft (307) and the plug rod (209). The connecting shaft (307) is adapted to drive the plug rod (209) to slide in the drain hole (204) through the linkage mechanism to open or close the communication channel between the drain hole (204) and the second arc groove (206). The metering box further includes a controller, and the controller is connected to the water flow sensor (208) and the electric push rod (301). The controller is adapted to control the action of the electric push rod (301) according to the signal fed back by the water flow sensor (208). The linkage mechanism includes a fixed block (210). The fixed block (210) is fixedly connected to the plug rod (209). A first support arm (211) is rotatably connected to the outer wall of the fixed block (210). A second support arm (212) is rotatably connected to the end of the first support arm (211). The second support arm (212) is fixedly connected to the connecting shaft (307).

10. The metering box with a locking and sealing device according to claim 9, characterized in that: A water guide pipe (4) corresponding to the second arc groove (206) is fixedly connected to the side wall of the box body (101). The filter screen (109) is slidably connected in the heat dissipation hole (102). A plurality of fan blades (5) can be fixedly connected to the outer wall of the filter screen (109) in an annular array structure. A support shaft (6) is rotatably connected to the inner wall of the filter screen (109). A push plate (9) is fixedly connected to the end of the support shaft (6). Both ends of the push plate (9) respectively extend into the grooves on the inner wall of the heat dissipation hole (102). Third sliding rods (7) are fixedly connected in the grooves. Third springs (8) are sleeved on the outer walls of the third sliding rods (7). The ends of the third sliding rods (7) penetrate through the push plate (9) and are slidably connected to it. One end of the third spring (8) abuts against the box body (101), and the other end of the third spring (8) abuts against the push plate (9). The part where the drain hole (204) penetrates through the second arc groove (206) forms an outlet, and the outlet is communicated with the inlet of the corresponding water guide pipe (4).

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