Circuit switching device

Abstract

The utility model discloses a line switching device which comprises a switching device body sleeved on two lines, the switching device body comprises a first protection box and a second protection box, and the first protection box and the second protection box are respectively and movably sleeved on the corresponding lines in a sealing mode. The joint of the two circuits is shielded and protected through the first protection box and the second protection box, and the joint of the two circuits is located in the first protection box and the second protection box. According to the utility model, through the arrangement of a series of structures, the connection part of two circuits can be clamped, fixed, sealed and shielded, the situation that the two circuits are separated due to pulling force is reduced, the stability and safety of the connection part of the circuits are improved, and the connection part of the circuits can be cooled in a heat transfer manner, so that the service life of the circuits is prolonged. The aging risk caused by long-time high temperature of the line is reduced, and the stability of the line in the switching use process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of line switching equipment, in particular to a line switching device. Background Art

[0002] In the switching of distribution lines, the joints of the two lines are generally directly wrapped with insulating materials and then exposed to the air without any protective device. For this purpose, application number: 201921531657.5 discloses a distribution line switching device, including a right cover, a left cover, a fixing plate, a push rod, a clamping column, a spring, a plugging plate, and a distribution line. The right cover has a plug ring, which is inserted into the left cover. The plug ring has a boss, and the boss has a spring groove. The spring is inserted into the spring groove. The upper part of the spring groove has a clamping column adapted to the clamping column, and the clamping column passes through the spring groove. The clamping column convex ring is adapted to the spring groove, and the clamping column convex ring is inserted into the spring groove. The clamping column convex ring slides up and down in the spring groove. The upper part of the spring is connected to the clamping column convex ring. The boss has a plugging plate groove, and the plugging plate is adapted to the plugging plate groove. The plugging plate is connected to the plugging plate groove. The plugging plate is connected to the boss through a screw, and the lower part of the spring is connected to the plugging plate.

[0003] The power distribution line switching device disclosed in the above patent can shield and protect the connection between two lines by cooperating with two fixedly connected right covers and left covers, but it still has some shortcomings: 1. It only has a single protection function, and lacks a structure for clamping and fixing the connection between the switching lines. There is a risk of the connection between the two lines being separated due to pulling during use; 2. The lines will generate heat during use, and there is a lack of a structure for cooling the connection between the lines. Under long-term high temperature, the connected insulation is prone to the risk of accelerated aging due to excessive temperature, thereby affecting the subsequent connection stability and failing to meet the use requirements. Taking the above into consideration, we have proposed a line switching device. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a line switching device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A line switching device comprises a switching device body sleeved on two lines, the switching device body comprises a first protective box and a second protective box, the first protective box and the second protective box are respectively sealed and movably sleeved on the corresponding lines, the connection between the two lines is shielded and protected by the first protective box and the second protective box, the connection between the two lines is located inside the first protective box and the second protective box, the first protective box and the second protective box are sealed and movably clamped and fixed on one side close to each other, the top of the two lines and the bottom of the two lines are respectively movably contacted with the same clamping plate, the connection between the two lines is clamped and fixed by the two clamping plates, the two clamping plates are fixedly connected to the sides away from each other with a threaded driving mechanism, the threaded driving mechanism is used to drive the corresponding clamping plate to move vertically, and the two threaded driving mechanisms The sides of the structures that are away from each other extend to the outside of the first protective box. The first protective box is sleeved on two threaded drive mechanisms. A circular tube is fixedly connected between the top inner wall and the bottom inner wall of the second protective box. The circular tube is sleeved on the line on the left. A water supply mechanism connected to the left side of the circular tube is installed on the second protective box. The water supply mechanism is used to supply water to the inside of the circular tube. A water trough is opened on the left side of the clamping plate. The clamping plate and the circular tube are equipped with the same connecting mechanism. The water trough and the inside of the circular tube are connected through the connecting mechanism. A temperature sensor is fixedly connected to the top of the inner side of the circular tube. The detection end of the temperature sensor is in active contact with the top of the line on the left. The temperature sensor is used to detect the temperature of the line. The detection principle is the existing technology and will not be elaborated here. The temperature sensor is electrically connected to the water supply mechanism.

[0007] Preferably, the threaded drive mechanism includes an L-shaped rod, two L-shaped rods are symmetrically arranged, the ends of the two L-shaped rods close to each other are respectively fixedly connected to the sides of the two clamping plates away from each other, the sides of the two L-shaped rods away from each other extend to the outside of the first protective box, the first protective box is slidably mounted on the two L-shaped rods, and the top and bottom of the first protective box are rotatably installed with T-shaped screws, the L-shaped rods are threadedly mounted on the corresponding T-shaped screws, and the T-shaped screws are threadedly connected to the corresponding L-shaped rods in such a way that the corresponding L-shaped rods can be driven to move vertically while the T-shaped screws rotate.

[0008] Preferably, the water supply mechanism includes a water pump fixedly connected to the inner wall of the top of the second protective box, the discharge end of the water pump extends into the loop-shaped pipe, the loop-shaped pipe is fixedly sleeved on the discharge end of the water pump, a water tank is fixedly connected to the left side of the top of the second protective box, the extraction end of the water pump extends into the water tank, the water pump is used to extract water inside the water tank and supply it to the loop-shaped pipe, a controller is fixed and electrically connected to the front side of the water pump, the controller is electrically connected to the temperature sensor, a first connecting pipe is fixedly connected to the top of the loop-shaped pipe, the top of the first connecting pipe is fixedly connected to the inside of the water tank, the bottom end of the first connecting pipe is fixedly connected to a third one-way valve with the top as an outlet, the water inside the loop-shaped pipe can be discharged into the water tank through the third one-way valve and the first connecting pipe, the setting of the third one-way valve can reduce the situation where the water inside the water tank directly flows back to the inside of the loop-shaped pipe through the first connecting pipe.

[0009] Preferably, the connecting mechanism includes an L-shaped tube, two L-shaped tubes are symmetrically arranged, and the ends of the two L-shaped tubes close to each other are respectively connected and fixed to the corresponding water-passing grooves, and the left end of the L-shaped tube extends to the inside of the return tube to connect and fix a first one-way valve with an outlet on the left side. The return tube sealing sleeve is arranged on the two L-shaped tubes, and the right side of the return tube is connected and fixed with two second connecting tubes, and the right end of the second connecting tube extends to the corresponding water-passing groove and is fixedly connected to a second one-way valve with an outlet on the right side. Through the arrangement of the second connecting tube and the second one-way valve, the water inside the return tube can enter the water-passing groove through the second connecting tube and the second one-way valve, and the second connecting tube sealing sleeve is arranged in the corresponding water-passing groove.

[0010] Preferably, the left top and left bottom of the first protective box are fixedly connected with positioning blocks, the right top and right bottom of the second protective box are provided with positioning grooves, the positioning blocks are movably sleeved in the corresponding positioning grooves, the positioning blocks and the positioning grooves cooperate to position the first protective box and the second protective box, the two positioning blocks are provided with threaded grooves on the sides away from each other, the threaded grooves are threaded with knob-type quick-fix bolts, the second protective box is threadedly sleeved on the two knob-type quick-fix bolts, an elastic sealing ring is adhesively fixed to the left side of the first protective box, the left side of the elastic sealing ring is in close contact with the right side of the second protective box, the elastic sealing ring is movably sleeved on the two positioning blocks, and the sealing connection between the first protective box and the second protective box is achieved through the elastic sealing ring.

[0011] Preferably, a battery is fixedly connected to the top inner wall of the second protective box, the battery is electrically connected to the water pump and the controller, and the battery supplies power to the water pump and the controller.

[0012] Preferably, a first sealing ring is embedded and fixed on the inner wall of the first protective box and the second protective box on a side away from each other, and the inner wall of the first sealing ring is tightly fitted on the outer side of the corresponding circuit, and the sealing connection between the first protective box, the second protective box and the circuit is achieved through the two first sealing rings. A heat-conductive non-slip hard rubber is bonded and fixed on the side where the two clamping plates are close to each other, and the sides where the two heat-conductive non-slip hard rubbers are close to each other are respectively in active contact with the top and bottom of the two circuits, and the clamping plates are made of heat-conductive material. The heat-conductive non-slip hard rubber and the clamping plates can use their heat-conductive properties to transfer the heat on the circuit to the inside of the water trough, and the setting of the heat-conductive non-slip hard rubber can effectively reduce slipping during the clamping and fixing process.

[0013] Compared with the existing technology, the beneficial effects of the utility model are:

[0014] 1. Through the combination of the clamping plate and the threaded drive mechanism, the connection between the two lines can be clamped and fixed, which can effectively reduce the situation where the two lines are separated due to pulling force and improve the stability during the connection process;

[0015] 2. The first protective box, the second protective box and the sealing ring cooperate to seal and shield the connection between the two lines, reduce the risk of external water entering, and improve the safety of the line transfer;

[0016] 3. Through the coordination of the water trough, connecting mechanism, annular pipe, temperature sensor and water supply mechanism, the line can be automatically cooled by heat transfer when the line temperature is high, reducing the aging risk caused by long-term high temperature of the line and improving the stability of the line during transfer and use;

[0017] The utility model can clamp, fix and seal the connection of two lines through the arrangement of a series of structures, reduce the situation where the two lines are separated due to pulling force, improve the stability and safety of the line connection, and can cool the connection of the line by heat transfer, reduce the risk of aging caused by the line being in high temperature for a long time, and improve the stability of the line during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional structural schematic diagram of a line switching device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of a line switching device proposed by the utility model;

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0021] In the figure: 100, first protective box; 101, second protective box; 102, circuit; 1, first sealing ring; 2, circular pipe; 3, water pump; 4, water tank; 5, controller; 6, clamping plate; 7, L-shaped pipe; 8, L-shaped rod; 9, T-shaped screw; 10, water trough; 11, second connecting pipe; 12, second one-way valve; 13, battery; 14, first one-way valve; 15, temperature sensor; 16, heat-conductive and non-slip hard rubber; 17, knob-type quick-fix bolt; 18, first connecting pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1-3, a line switching device, comprising a switching device body sleeved on two lines 102, the switching device body comprising a first protective box 100 and a second protective box 101, the first protective box 100 and the second protective box 101 are respectively and sealingly sleeved on the corresponding lines 102, wherein the inner wall of the first protective box 100 and the second protective box 101 on the side away from each other is provided with an embedding hole, a first sealing ring 1 is embedded and fixed in the embedding hole, the inner wall of the first sealing ring 1 is tightly fitted with the outer side of the corresponding line 102, and the sealed connection between the first protective box 100, the second protective box 101 and the line 102 is realized by the two first sealing rings 1, the connection between the two lines 102 is located inside the first protective box 100 and the second protective box 101, and the connection between the two lines 102 is shielded and protected by the first protective box 100 and the second protective box 101, and the first protective box 100 and the second protective box 101 are sealed and fixed on the side close to each other, wherein the left top and the left bottom of the first protective box 100 are fixedly connected with positioning blocks, The second protective box 101 is provided with positioning grooves on the right top and the right bottom, and the positioning blocks are movably sleeved in the corresponding positioning grooves. The positioning blocks and the positioning grooves cooperate to position the first protective box 100 and the second protective box 101. The two positioning blocks are provided with threaded grooves on the sides away from each other, and the knob-type quick-fix bolts 17 are threadedly sleeved in the threaded grooves. The second protective box 101 is threadedly sleeved on the two knob-type quick-fix bolts 17, wherein the inner wall of the two positioning grooves on the side away from each other is provided with bolt holes, and the bolt holes are threadedly connected with the corresponding knob-type quick-fix bolts 17. An elastic sealing ring is bonded and fixed on the left side of the first protective box 100, and the left side of the elastic sealing ring is in close contact with the right side of the second protective box 101. The elastic sealing ring is movably sleeved on the two positioning blocks, wherein the elastic sealing ring is provided with a first through hole on the left top and the left bottom, and the inner wall of the first through hole is in movably contact with the outer side of the corresponding positioning block. The first through hole is used for the corresponding positioning block to pass through, and the sealing connection between the first protective box 100 and the second protective box 101 is realized by the elastic sealing ring.

[0024] The tops of the two circuits 102 and the bottoms of the two circuits 102 are respectively in active contact with the same clamping plate 6, and the connection between the two circuits 102 is clamped and fixed by the two clamping plates 6, wherein the sides of the two clamping plates 6 close to each other are bonded and fixed with a heat-conductive non-slip hard rubber 16, and the sides of the two heat-conductive non-slip hard rubbers 16 close to each other are respectively in active contact with the tops and bottoms of the two circuits 102. The setting of the heat-conductive non-slip hard rubber 16 can effectively reduce the slipping during the clamping and fixing process, and the sides of the two clamping plates 6 away from each other are fixedly connected with a threaded driving mechanism, and the sides of the two threaded driving mechanisms away from each other extend to the outside of the first protective box 100, and the first protective box 100 is sleeved on the two threaded driving mechanisms, wherein the threaded driving mechanism includes an L-shaped rod 8, and the two L-shaped rods 8 are symmetrically arranged, and the ends of the two L-shaped rods 8 close to each other are respectively fixedly connected to the sides of the two clamping plates 6 away from each other, and the sides of the two L-shaped rods 8 away from each other are Extending to the outside of the first protective box 100, the first protective box 100 is slidably sleeved on the two L-shaped rods 8, wherein the top inner wall and the bottom inner wall of the first protective box 100 are both provided with rectangular through-holes, the inner walls of the rectangular through-holes are in sliding contact with the outer sides of the corresponding L-shaped rods 8, and the rectangular through-holes are used for the corresponding L-shaped rods 8 to slide through, and the top and bottom of the first protective box 100 are both rotatably installed with T-shaped screws 9, wherein the top and bottom of the first protective box 100 are both provided with rotation grooves, and bearings are fixedly sleeved in the rotation grooves, and the inner side of the inner ring of the bearing is fixedly connected to the outer side of the corresponding T-shaped screw 9, and the bearing plays the role of rotatably installing the corresponding T-shaped screw 9, and the L-shaped rod 8 is threadedly sleeved on the corresponding T-shaped screw 9, wherein the two L-shaped rods 8 are both provided with threaded holes on the sides away from each other, and the threaded holes are threadedly connected to the corresponding T-shaped screw 9, and the T-shaped screw 9 is threadedly connected to the corresponding L-shaped rod 8, and the corresponding L-shaped rod 8 can be driven to move vertically while the T-shaped screw 9 rotates;

[0025] A circular tube 2 is fixedly connected between the top inner wall and the bottom inner wall of the second protective box 101, and the circular tube 2 is sleeved on the line 102 on the left. A water supply mechanism connected to the left side of the circular tube 2 is installed on the second protective box 101, and the water supply mechanism includes a water pump 3 fixedly connected to the top inner wall of the second protective box 101, and the discharge end of the water pump 3 extends into the circular tube 2. The circular tube 2 is fixedly sleeved on the discharge end of the water pump 3. A water tank 4 is fixedly connected to the left side of the top of the second protective box 101, and a water filling pipe is fixedly connected to the left side of the top of the water tank 4. A plugging cover is provided on the threaded sleeve of the water filling pipe, and water can be added to the inside of the water tank 4 through the water filling pipe. The extraction end of the water pump 3 extends into the water tank 4, and the water pump 3 is used to extract water from the inside of the water tank 4 and supply it to the circular tube 2. A controller 5 is fixed and electrically connected to the front side of the water pump 3. The second protective box 1 A battery 13 is fixedly connected to the top inner wall of 01, and the battery 13 is electrically connected to the water pump 3 and the controller 5. The battery 13 supplies power to the water pump 3 and the controller 5. A first connecting pipe 18 is fixedly connected to the top of the loop pipe 2, and the top of the first connecting pipe 18 is fixedly connected to the inside of the water tank 4, wherein a first through hole is opened on the top inner wall of the second protective box 101, and a second through hole is opened on the bottom inner wall of the water tank 4, the inner wall of the first through hole and the inner wall of the second through hole are both fixedly connected to the outside of the first connecting pipe 18, and the bottom end of the first connecting pipe 18 is fixedly connected to a third one-way valve with the top as the outlet, and the water inside the loop pipe 2 can be discharged into the water tank 4 through the third one-way valve and the first connecting pipe 18. The setting of the third one-way valve can reduce the situation where the water inside the water tank 4 directly flows back to the inside of the loop pipe 2 through the first connecting pipe 18;

[0026] A water groove 10 is provided on the left side of the clamping plate 6. The clamping plate 6 is made of heat-conducting material. The heat-conducting non-slip hard rubber 16 and the clamping plate 6 can use their heat-conducting characteristics to transfer the heat on the circuit 102 to the inside of the water groove 10. The clamping plate 6 and the return pipe 2 are equipped with the same connecting mechanism, which includes an L-shaped pipe 7. The two L-shaped pipes 7 are symmetrically arranged. The ends of the two L-shaped pipes 7 that are close to each other are respectively connected and fixed to the corresponding inside of the water groove 10. A third through hole is provided on the inner wall of the side where the two water grooves 10 are away from each other. The inner wall of the third through hole is fixedly connected to the outer side of the corresponding L-shaped pipe 7. The left end of the L-shaped pipe 7 extends to the return pipe 2 and is connected and fixed with a first one-way valve 14 with the left side as the outlet. The return pipe 2 is sealed and movablely sleeved on the two L-shaped pipes 7. Two fourth through holes are provided on the right inner wall of the return pipe 2. The fourth through holes are fixed The fixed sleeve is provided with a sealing sleeve, the inner wall of the sealing sleeve is tightly fitted with the outer side of the corresponding L-shaped tube 7, and the sealing sleeve is used to realize the sealing connection between the L-shaped tube 7 and the fourth through hole. The right side of the loop tube 2 is connected and fixed with two second connecting tubes 11, the right end of the second connecting tube 11 extends into the corresponding water-passing groove 10 and is fixedly connected with a second one-way valve 12 with the right side as the outlet. Through the arrangement of the second connecting tube 11 and the second one-way valve 12, the water inside the loop tube 2 can enter the water-passing groove 10 through the second connecting tube 11 and the second one-way valve 12. The second connecting tube 11 is sealed and movablely sleeved in the corresponding water-passing groove 10, wherein the outer side of the second connecting tube 11 is bonded and coated with a sealing rubber, and the outer side of the sealing rubber is in close contact with the outer side of the corresponding water-passing groove 10, and the sealing between the second connecting tube 11 and the corresponding water-passing groove 10 is realized by the sealing rubber;

[0027] A temperature sensor 15 is fixedly connected to the inner top of the ring-shaped tube 2, and the detection end of the temperature sensor 15 is in active contact with the top of the line 102 on the left. The controller 5 is electrically connected to the temperature sensor 15. The temperature sensor 15 is used to detect the temperature of the line 102. The detection principle is the existing technology and is not elaborated here. The utility model can clamp and fix the connection between the two lines 102 and seal and shield it through a series of structural settings, reduce the separation of the two lines 102 due to pulling force, improve the stability and safety of the connection between the lines 102, and can cool the connection between the lines 102 by heat transfer, reduce the aging risk of the line 102 caused by being at high temperature for a long time, and improve the stability of the line 102 during the transfer and use.

[0028] Working principle: When in use, when the two lines 102 are not connected, the first protective box 100 and the second protective box 101 are in a separated state. When switching and connecting, the two lines 102 are respectively extended through the corresponding first sealing rings 1 into the first protective box 100 and the second protective box 101, and the switching points of the two lines 102 are connected by winding with insulating materials using existing technology. After the connection, the two T-shaped screws 9 are rotated in the forward direction. Under the action of the threaded holes provided on the L-shaped rod 8, the T-shaped screws 9 rotate while driving the corresponding L-shaped rod 8 to move, and the L-shaped rod 8 drives the corresponding clamping plate 6 to move. The two clamping plates 6 drive the two heat-conductive non-slip hard rubbers 16 to move in a direction close to each other to clamp and fix the connection of the two lines 102. By clamping and fixing the connection of the lines 102, the separation of the two lines 102 due to pulling force can be effectively reduced, and the stability during the connection process can be improved;

[0029] After clamping, the second protective box 101 is moved to the right, and the second protective box 101 drives the two positioning grooves to be movably sleeved on the corresponding positioning blocks, and then the two knob-type quick-fix bolts 17 are rotated forward and moved into the corresponding threaded grooves to realize the connection between the first protective box 100 and the second protective box 101. At this time, the first protective box 100, the second protective box 101 and the first sealing ring 1 seal and shield the connection between the two lines 102, reduce the ingress of external water, and improve the safety of the line 102 transition. When the second protection box 101 on the left side moves to the right, it also drives the ring-shaped tube 2 to move to the right. The ring-shaped tube 2 drives the two second connecting tubes 11 and the two second one-way valves 12 to be inserted into the corresponding water-passing grooves 10 respectively. At the same time, the ring-shaped tube 2 drives the two sealing sleeves to be sleeved on the corresponding L-shaped tubes 7. At this time, the ring-shaped tube 2 and the two water-passing grooves 10 are connected through the two second connecting tubes 11 and the two second one-way valves 12. The ring-shaped tube 2 is connected with the two water-passing grooves 10 through the two first one-way valves 14 and the two L-shaped tubes 7.

[0030] During the use of line 102, heat is generated. The temperature sensor 15 detects the temperature of line 102. When the temperature is detected to be higher than the preset value, the temperature sensor 15 controls the controller 5 to start, and the controller 5 controls the water pump 3 to start. The water pump 3 extracts water from the water tank 4. The extracted water enters the loop pipe 2. The water inside the loop pipe 2 flows into the two water grooves 10 through the two second connecting pipes 11 and the two second one-way valves 12. The water inside the water grooves 10 is discharged into the loop pipe 2 through the corresponding L-shaped pipe 7 and the first one-way valve 14. The water inside the circular pipe 2 is discharged into the water tank 4 through the third one-way valve and the first connecting pipe 18. The water pump 3 continuously extracts water, so that the water inside the water trough 10 circulates. The heat on the two lines 102 is transferred to the cooling water inside the water trough 10 through the two heat-conductive non-slip hard rubbers 16 and the two clamping plates 6. The circulating cooling water can take away the heat, thereby achieving the effect of heat transfer and cooling the line 102, reducing the aging risk of the line 102 caused by being at high temperature for a long time, and improving the stability of the line 102 during the transfer and use.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A line switching device, comprising a switching device body sleeved on two lines (102), the switching device body comprising a first protective box (100) and a second protective box (101), the first protective box (100) and the second protective box (101) are respectively and movably sleeved on the corresponding lines (102), the connection between the two lines (102) is located inside the first protective box (100) and the second protective box (101), characterized in that: The first protection box (100) and the second protection box (101) are sealed and fixed at the sides close to each other. The tops of the two circuits (102) and the bottoms of the two circuits (102) are respectively in active contact with the same clamping plate (6). The two clamping plates (6) are fixedly connected to the sides away from each other with a threaded driving mechanism. The sides away from each other of the two threaded driving mechanisms extend to the outside of the first protection box (100). The first protection box (100) is sleeved on the two threaded driving mechanisms. The top inner wall and the bottom inner wall of the second protection box (101) are fixedly connected to each other. A circular pipe (2) is fixedly connected, the circular pipe (2) is sleeved on the left line (102), a water supply mechanism connected to the left side of the circular pipe (2) is installed on the second protection box (101), a water channel (10) is opened on the left side of the clamping plate (6), the clamping plate (6) and the circular pipe (2) are installed with the same connecting mechanism, a temperature sensor (15) is fixedly connected to the inner top of the circular pipe (2), the detection end of the temperature sensor (15) is movably contacted with the top of the left line (102), and the temperature sensor (15) is electrically connected to the water supply mechanism.

2. A line switching device according to claim 1, characterized in that: The threaded drive mechanism comprises an L-shaped rod (8), wherein two L-shaped rods (8) are symmetrically arranged, and the ends of the two L-shaped rods (8) close to each other are respectively fixedly connected to the sides of the two clamping plates (6) away from each other, and the sides of the two L-shaped rods (8) away from each other extend to the outside of the first protective box (100), and the first protective box (100) is slidably mounted on the two L-shaped rods (8), and the top and bottom of the first protective box (100) are rotatably mounted with T-shaped screws (9), and the L-shaped rods (8) are threadedly mounted on the corresponding T-shaped screws (9).

3. A line switching device according to claim 2, characterized in that: The water supply mechanism comprises a water pump (3) fixedly connected to the inner wall of the top of the second protection box (101), the discharge end of the water pump (3) extends into the loop pipe (2), the loop pipe (2) is fixedly sleeved on the discharge end of the water pump (3), the left side of the top of the second protection box (101) is fixedly connected to a water tank (4), the extraction end of the water pump (3) extends into the water tank (4), the front side of the water pump (3) is fixedly and electrically connected to a controller (5), the controller (5) is electrically connected to a temperature sensor (15), the top of the loop pipe (2) is connected and fixedly connected to a first connecting pipe (18), the top end of the first connecting pipe (18) is connected and fixedly connected to the inside of the water tank (4), and the bottom end of the first connecting pipe (18) is fixedly connected to a third one-way valve with the top as an outlet.

4. A line switching device according to claim 3, characterized in that: The communication mechanism comprises an L-shaped tube (7), two L-shaped tubes (7) are symmetrically arranged, and the ends of the two L-shaped tubes (7) close to each other are respectively connected and fixed to the inside of the corresponding water-passing groove (10), the left end of the L-shaped tube (7) extends into the loop-shaped tube (2) and is connected and fixed with a first one-way valve (14) with the left side as an outlet, the loop-shaped tube (2) is sealingly movably sleeved on the two L-shaped tubes (7), and the right side of the loop-shaped tube (2) is connected and fixed with two second communication tubes (11), the right end of the second communication tube (11) extends into the corresponding water-passing groove (10) and is fixedly connected with a second one-way valve (12) with the right side as an outlet, and the second communication tube (11) is sealingly movably sleeved in the corresponding water-passing groove (10).

5. A line switching device according to claim 1, characterized in that: The left top and the left bottom of the first protective box (100) are fixedly connected with positioning blocks, the right top and the right bottom of the second protective box (101) are provided with positioning grooves, the positioning blocks are movably mounted in the corresponding positioning grooves, the two positioning blocks are provided with threaded grooves on the sides away from each other, and knob-type quick-fix bolts (17) are threadedly mounted in the threaded grooves, the second protective box (101) is threadedly mounted on the two knob-type quick-fix bolts (17), the left side of the first protective box (100) is adhesively fixed with an elastic sealing ring, the left side of the elastic sealing ring is in close contact with the right side of the second protective box (101), and the elastic sealing ring is movably mounted on the two positioning blocks.

6. A line switching device according to claim 3, characterized in that: A battery (13) is fixedly connected to the top inner wall of the second protection box (101), and the battery (13) is electrically connected to the water pump (3) and the controller (5).

7. The line switching device according to claim 1, characterized in that: A first sealing ring (1) is embedded and fixed on the inner wall of the first protective box (100) and the second protective box (101) on the side away from each other, and the inner wall of the first sealing ring (1) is tightly fitted with the outer side of the corresponding circuit (102). A heat-conducting non-slip hard rubber (16) is bonded and fixed on the side close to each other of the two clamping plates (6). The side close to each other of the two heat-conducting non-slip hard rubbers (16) are in active contact with the top and bottom of the two circuits (102) respectively, and the clamping plates (6) are made of heat-conducting material.

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