CN110413078A - Water cooling device with switchable pump circuit - Google Patents

Abstract

The present invention is a kind of water cooling plant in changeable pumping circuit, it is sent out water cooling liquid by one first pumping or one second pumping operating, and first position or the second position are moved to by the way that a core is moved valve, water cooling liquid can be made to be entered after core moves valve by different directions to flow out from delivery outlet again, the core, which moves valve, need not use the consumption of electric power, also it can reach non-return effect, then, water cooling liquid can flow into heat absorption water-cooling head and cool down to a load, then collect again and flow into that water of radiation is cold to discharge into capable heat dissipation, it is delivered to water tank again and carries out cycle operation, reach can two-way switching pumping circuit the effect of, and make the sustainable Nonstop running machine of water-cooling system.

Description

Water cooling device with switchable pump circuit

technical field

The present invention relates to a heat dissipation device, in particular to a water cooling device that can switch the pump circuit and operate continuously.

Background technique

Nowadays, most of the general industrial computers, server computers and high heat dissipation components operate on a 24-hour basis. The computer server will generate high heat during operation. Although the computer has a cooling fan installed, the heat source of the computer equipment is constantly generated, and the installed heat dissipation The air convection of the fan is not good, which makes the heat dissipation effect limited. Therefore, in order to effectively reduce the temperature, some manufacturers have developed a water-cooling device, which is installed on the heating element of the electronic equipment, and can use the water-cooling liquid to circulate in and out continuously. Used to adjust the operating temperature of the computer server.

However, the known water-cooling device has shortcomings. Because the known water-cooling device uses a solenoid valve to prevent the reverse flow of the water-cooling liquid, but the solenoid valve is prone to failure if it is in a humid state for a long time, thus interrupting the water-cooling system and affecting the operation of the computer. Interrupt work.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a water-cooling device with switchable pump circuit. The anti-return device does not need to consume electricity, and can also achieve the effect of anti-reverse, and the pump circuit can be switched to achieve 24-hour non-stop and 24/7 to maintain cooling performance.

In order to achieve the above-mentioned purpose, the water cooling device of the switchable pump circuit provided by the present invention includes: a water tank, which is provided with a water cooling liquid; a first pump, the water inlet of which is connected to the water inlet of the water tank; a A second pump, the water inlet of which is connected to the water delivery port of the water tank; a control unit, which is electrically connected to the first pump and the second pump, respectively; a nuclear valve, which has a body, the body is provided with There is a chamber, the chamber includes a first shaft hole, a second shaft hole and an output hole which are connected to each other, the first shaft hole is connected to the first pump, the second shaft hole is connected to the second pump Pu, the chamber is provided with a check valve, the check valve can move in the chamber, and defines a first position and a second position, when the check valve is in the first position, the first shaft hole It communicates with the output hole, and the second shaft hole is not communicated with the first shaft hole and the output hole respectively. When the non-return valve is in the second position, the second shaft hole communicates with the output hole, and the first shaft hole communicates with the output hole. A shaft hole is not communicated with the second shaft hole and the output hole respectively; a cold water suction head, which is connected to the output hole of the nuclear valve; a heat dissipation water cooling row, the first end of which is connected to the water block, and its The second end is connected to the water tank; a first circuit, when the non-return valve is in the first position, the water tank, the first pump, the first shaft hole of the nuclear valve, and the output hole of the nuclear valve , The absorbing hot water cooling head and the radiating water cooling row are connected; a second circuit, when the non-return valve is in the second position, the water tank, the second pump, the second shaft hole of the nuclear valve, the The output hole of the nuclear valve, the cold head for absorbing hot water and the cold row for radiating water are communicated with each other.

As a preferred solution, the non-return valve has a moving piece, and two ends of the moving piece are provided with a first opening and a second opening corresponding to the first shaft hole and the second shaft hole. A baffle is provided, and the baffle is respectively formed with a first blocking surface and a second blocking surface corresponding to the first shaft hole and the second shaft hole, and the first blocking surface and the second blocking surface are respectively concave with a cone There is a first channel and at least one first through hole communicated with the first opening between the first opening and the first blocking surface, the first channel communicates with the output hole, and the second opening communicates with the first opening. There is a second channel and at least one second perforation communicated with the second opening between the two blocking surfaces, and the second channel communicates with the output hole, wherein the length of the non-return valve along the long axis is smaller than the length of the main body along the long axis When the check valve is in the first position, the baffle closes the second passage, and the first shaft hole, the first passage and the output hole communicate with each other. When the check valve is in the second position , the baffle closes the first channel, and the second shaft hole, the second channel and the output hole communicate with each other.

As a preferred solution, the first shaft hole and the second shaft hole are respectively provided with an inner thread, the first shaft hole and the second shaft hole are respectively provided with a positioning plug, and each positioning plug has a first One end and a second end, and a hole is pierced between the first end and the second end, and the outer peripheral wall of each positioning plug is provided with a stopper at the first end. The outer diameter is larger than the inner diameter of the first shaft hole and the second shaft hole, so that the stopper can stop the first shaft hole and the second shaft hole respectively. A groove is respectively provided on the side of the stopper, and the outer peripheral wall of each positioning plug is respectively provided with an external thread on the side of the groove, so that the positioning plug can be screwed on the first shaft respectively. The inner thread of the hole and the second shaft hole, the grooves are respectively provided with a sealing ring, the through hole is provided with a stop section at the first end, and the inner diameter of the stop section is larger than the inner diameter of the through hole, The perforation is provided with a limiting section on the side of the blocking section, the inner diameter of the limiting section is smaller than the inner diameter of the perforation, and the perforation is provided with a positioning section at the second end, and the positioning section is The inner diameter is larger than the inner diameter of the through hole, and a diameter expansion section is further arranged between the positioning section and the through hole, and the inner diameter of the diameter expansion section gradually increases toward the second end direction.

As a preferred solution, wherein, the through hole of each positioning plug is provided with a rotary joint, the rotary joint has a first end and a second end, and a through hole is formed between the first end and the second end, the said A screw head is formed radially outward from the first end of the rotary joint, the screw head protrudes from the through hole of the positioning plug, the through hole is provided with an internal thread at the first end, and the rotary joint is further provided with a A stop ring, the stop ring is respectively accommodated in the stop segment, the stop ring is sandwiched between the screw head and the stop piece, and the second end of the rotary joint is placed in the stop The outer peripheral wall of the second end is protruded with a plurality of protrusions at intervals, and the protrusions of the rotary joint pass through the limiting section and are clamped in the through holes, so that the rotary joint can rotate in the limiting section .

As a preferred solution, a ring groove is concavely formed on the core element, and a positioning ring is sleeved in the ring groove. The outer diameter of the positioning ring is smaller than the inner diameter of the positioning section, and the outer diameter of the positioning ring is larger than the expanding diameter. The inner diameter of the segment.

As a preferred solution, wherein, each positioning plug is provided with a rotating screw from the head toward the pipe portion, and the rotating screw is provided with a screw head and a hollow shaft portion corresponding to the head and the pipe portion, The outer peripheral wall spacer ring at the other end of the shaft portion is provided with a plurality of protrusions, and the screw heads are respectively connected to the second connection pipe and the fourth connection pipe.

As a preferred solution, wherein, the nuclear element is provided with a damping element at the first opening and the second opening respectively, and the damping element is the end faces of both ends of the check valve, and the size of the damping element can be reduced by reducing the first opening. The inner diameter of the second opening increases, thereby increasing the damping value.

As a preferred solution, the first shaft hole and the second shaft hole are respectively arranged on two opposite sides of the body, and the central axes of the first shaft hole and the second shaft hole are located on the same axis, and the stopper The reverse valve is provided with the baffle plate in the direction perpendicular to the axis.

The water cooling device with switchable pump circuit provided by the present invention operates the first pump or the second pump to send the water cooling liquid, and moves the check valve to the first position or the second position by moving the check valve to the first position or the second position. , so that the water cooling liquid can enter the chamber through the first shaft hole or the second shaft hole and then flow out from the output hole. The liquid will flow into the hot water absorption cold head to cool a load, and then the heated water cooling liquid will be collected and flowed into the cooling water cooling row for heat dissipation, and then sent to the water tank for circulating operation to achieve the effect of bidirectional switching of the pump circuit. , and make the water cooling system run continuously without interrupting the cooling effect.

Description of drawings

FIG. 1 is a system configuration diagram of the present invention.

FIG. 2 is a combined perspective view of the nuclear valve of the present invention.

3 is an exploded perspective view of the nuclear valve of the present invention.

4 is a cross-sectional view of the nuclear valve of the present invention.

FIG. 5 is a system block diagram of the present invention, showing the connection form of the first loop.

FIG. 6 is a schematic diagram of the use of the present invention to show the state of the initial flow of the water cooling liquid into the chamber.

FIG. 7 is a schematic diagram of the use of the present invention, to show the inflow of the water cooling liquid from the first shaft hole.

FIG. 8 is a system block diagram of the present invention, showing the connection form of the second loop.

FIG. 9 is a schematic diagram of the use of the present invention, to show the inflow of the water cooling liquid from the second shaft hole.

In the picture:

200 Water cooling unit with switchable pump circuit

210 Water tank 215 Water outlet

220 First pump 225 Water inlet

230 Second pump 235 Water inlet

240 Control Unit 250 Suction Cold Head

260 Cooling water cooling row 261 First end

262 second end

100 nuclear valve

10 Body 101 Axis

11 chamber 12 first shaft hole

121 Internal thread 13 Second shaft hole

131 Internal thread 14 Output hole

141 Internal thread

20 Locating plug 201 First end

202 second end 21 perforation

211 Stop section 212 Limit section

213 Positioning section 214 Expanding section

22 Stop 23 Groove

231 Male thread 24 Seal ring

30 Non-return valve 31 Nuclear parts

311 First opening 312 Second opening

313 Damping piece 32 Ring groove

33 Locating ring 34 Stopper

341 First stop 342 Second stop

343 Conical groove 35 First channel

36 First perforation 37 Second channel

38 Second Piercing

40 Swivel 41 First end

411 Screw head 42 Second end

421 bump 43 through hole

431 Internal thread 44 Stop ring

310 The first connecting pipe 320 The second connecting pipe

330 Third connecting pipe

400 loads.

Detailed ways

The present invention is further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

Please refer to FIG. 1 , the system configuration diagram of the present invention, which discloses a water cooling device 200 with a switchable pump circuit, and includes:

A water tank 210 is provided with a water cooling liquid.

A first pump 220 whose water inlet 225 is connected to the water delivery port 215 of the water tank 210 .

A second pump 230 whose water inlet 235 is connected to the water delivery port 215 of the water tank 210 .

A control unit 240 is electrically connected to the first pump 220 and the second pump 230 respectively.

A core valve 100 , as shown in FIG. 2 , FIG. 3 and FIG. 4 , is provided with a main body 10 , the main body is provided with a chamber 11 , and the chamber 11 includes a first shaft hole 12 , A second shaft hole 13 and an output hole 14 , the first shaft hole 12 and the second shaft hole 13 are respectively disposed on two opposite sides of the main body 10 , and the first shaft hole 12 and the second shaft hole 13 The central axis of the shaft is located on the same axis 101, the openings of the first shaft hole 12, the second shaft hole 13 and the output hole 14 are respectively provided with an internal thread 121, 131, 141, the first shaft hole 12 and the first shaft hole 12. A positioning plug 20 is screwed into the two shaft holes 13 respectively. Each positioning plug 20 has a first end 201 and a second end 202 , and a through hole 21 is penetrated between the first end 201 and the second end 202 . , the outer peripheral wall of each positioning plug 20 is provided with a stopper 22 at the first end 201, the outer diameter of the stopper 22 is larger than the inner diameter of the first shaft hole 12 and the second shaft hole 13, In order for the stopper 22 to stop at the first shaft hole 12 and the second shaft hole 13 respectively, the outer peripheral wall of each positioning plug 20 is respectively provided with a groove on the side of the stopper 22 23. The grooves 23 are respectively provided with a sealing ring 24, and the outer peripheral wall of each positioning plug 20 is respectively provided with an external thread 231 on the side of the groove 23, so that the positioning plugs 20 can be screwed respectively. In the inner threads 121 and 131 of the first shaft hole 12 and the second shaft hole 13 , the through hole 21 is provided with a stop section 211 at the first end 201 , and the inner diameter of the stop section 211 is larger than the The inner diameter of the through hole 21, the through hole 21 is provided with a limit section 212 on the side of the blocking section 211, the inner diameter of the limit section 212 is smaller than the inner diameter of the through hole 21, the through hole 21 is at the second end 202 is provided with a positioning section 213, the positioning sections 213 of each positioning plug 20 are arranged at intervals, the inner diameter of the positioning section 213 is larger than the inner diameter of the through hole 21, and the positioning section 213 and the through hole 21 are between A diameter expansion section 214 is also provided, and the inner diameter of the diameter expansion section 214 gradually increases toward the second end 202 . In addition, the chamber 11 is provided with a non-return valve 30 , and the non-return valve 30 is installed in the through hole 21 In between, the check valve 30 has a core 31, and two ends of the core 31 are provided with a first opening 311 and a second opening 312 corresponding to the first shaft hole 12 and the second shaft hole 13, The nuclear element 31 is provided with a damping element 313 at the first opening 311 and the second opening 312 respectively. In this embodiment, the damping element 313 is the end faces of the two ends of the check valve 30. The size of the damping element 313 The inner diameter of the first opening 311 and the second opening 312 can be increased by reducing the inner diameter of the first opening 311 and the second opening 312 to increase the damping value. A ring groove 32 is set on the outer peripheral wall of the core element 31 at the middle position, and the ring groove 32 is sleeved. There is a positioning ring 33, and the core 31 is provided with a baffle plate 34 perpendicular to the axis direction, and the baffle plates 34 correspond to the first axis respectively. The hole 12 and the second shaft hole 13 are formed with a first blocking surface 341 and a second blocking surface 342. The first blocking surface 341 and the second blocking surface 342 are respectively recessed with a conical groove 343. 30 There is a first channel 35 and three first through holes 36 between the first opening 311 and the first blocking surface 341 that communicate with the first opening 311, the first channel 35 communicates with the output hole 14, and the first channel 35 communicates with the output hole 14. The check valve 30 has a second channel 37 and three second through holes 38 between the second opening 312 and the second blocking surface 342 , and the second channel 37 and the output hole 14 communicate with the second opening 312 . The check valve 30 is movable in the chamber 11 and defines a first position and a second position. When the check valve 30 is at the first position, the positioning ring 33 is positioned at the first position. The positioning section 213 of the two shaft holes 13, the baffle plate 34 closes the second passage 37, and the first shaft hole 12, the first passage 35 and the output hole 14 communicate with each other, when the non-return valve 30 is in the second position When the positioning ring 33 is positioned on the positioning section 213 of the first shaft hole 12 , the baffle 34 closes the first passage 35 , and the second shaft hole 13 , the second passage 37 and the output hole 14 communicate with each other, The positioning plugs 20 are respectively provided with a rotary joint 40 . The rotary joint 40 has a first end 41 and a second end 42 , and a through hole 43 is formed between the first end 41 and the second end 42 . , the first end 41 of the rotary joint 40 forms a screw head 411 radially outward, the screw head 411 protrudes from the through hole 21 of the positioning plug 20, and the screw head 411 is respectively screwed with a screw head 411. A first connecting pipe 310 and a second connecting pipe 320, the other end of the first connecting pipe 310 is connected to the first pump 220, the other end of the second connecting pipe 320 is connected to the second pump 230, the through hole 43. The first end 41 is provided with an inner thread 431, and the rotary joint 40 is further provided with a stop ring 44, the stop ring 44 is respectively accommodated in the stop section 211, and the stop ring 44 clamps Between the screw head 411 and the stopper 22 , the second end 42 of the rotary joint 40 is placed on the limiting section 212 , and the outer peripheral wall of the second end 42 is protruded with a plurality of The protruding block 421 , the protruding block 421 of the rotary joint 40 passes through the limiting section 212 and is locked in the through hole 21 , so that the rotary joint 40 can rotate on the limiting section 212 .

A water-absorbing cold head 250 is connected to the output hole 14 of the core valve 100 by a third connecting pipe 330 .

A cooling water cooling row 260 , the first end 261 of which is connected to the water cooling head 250 , and the second end 262 of which is connected to the water tank 210 .

A first circuit, when the check valve 30 is in the first position, the water tank 210 , the first pump 220 , the first shaft hole 12 of the nuclear valve 100 , and the output hole 14 of the nuclear valve 100 , the hot water absorbing cold head 250 and the radiating water cold row 260 are communicated.

A second circuit, when the check valve 30 is in the second position, the water tank 210 , the second pump 230 , the second shaft hole 13 of the nuclear valve 100 , and the output hole 14 of the nuclear valve 100 , the hot water absorbing cold head 250 and the radiating water cold row 260 are communicated.

First, the control unit 240 is used to turn on the first pump 220. Please refer to FIG. 5, FIG. 6 and FIG. Flow out and flow to the nuclear valve 100 through the first connecting pipe 310, the water coolant pushes the baffle 34 of the check valve 30 by water pressure, so that the check valve 20 moves toward the direction of the second shaft hole 13, The positioning ring 33 is positioned at the positioning section 213 of the second shaft hole 13 , and the non-return valve 30 is positioned at the first position. Since the inner diameter of the enlarged diameter section 214 is smaller than the outer diameter of the positioning ring 33 So that the check valve 30 cannot continue to move in the direction of the second shaft hole 13 , at this time, the baffle 34 closes the second channel 37 , and the water cooling liquid enters from the first shaft hole 12 and flows to the first block The surface 341 flows out from the first through hole 36 and flows from the first through hole 36 to the output hole 14 , and then the water cooling liquid flows to the hot water cooling head 250 through the third connecting pipe 330 to reduce a load 400 The temperature of the absorbing water cooling head 250 flows to the cooling water cooling row 260 for heat dissipation, and then flows back to the water tank 210, and finally flows into the first pump 220 from the water tank 210 to circulate the first circuit.

Please refer to FIG. 8 and FIG. 9 again. When the control unit 240 turns off the first pump 220 and starts the operation of the second pump 230, the water cooling liquid flows out from the second pump 230 and passes through the first pump 230. The second connecting pipe 320 flows to the core valve 100 , the water coolant pushes the baffle 34 of the check valve 30 by water pressure, so that the check valve 30 moves toward the direction of the first shaft hole 12 , and makes the positioning ring 33 is positioned at the positioning section 213 of the first shaft hole 12, so that the check valve 30 is located at the second position, and since the inner diameter of the enlarged diameter section 214 is smaller than the outer diameter of the positioning ring 33, the check valve 30 is positioned at the second position. 30 cannot continue to move in the direction of the first shaft hole 12, wherein the baffle 34 closes the first channel 35, the water cooling liquid enters from the second shaft hole 13 and flows to the second blocking surface 342 and then from the second shaft hole 13. The second through hole 38 flows out, and flows from the second through hole 38 to the output hole 14 , and then the water cooling liquid flows through the third connecting pipe 330 to the water cooling head 250 to reduce the temperature of the load 400 , and then flows from the The water-absorbing cold head 250 flows to the heat-dissipating water-cooling row 260 for heat dissipation and then flows back to the water tank 210 , and finally flows into the second pump 230 from the water tank 210 to circulate the second circuit, whereby the core valve 100 There is no need to use power consumption, and the anti-reverse effect can also be achieved. When the first pump 220 or the second pump 230 fails abnormally, the other pump can continue to operate, so as to achieve the effect of bidirectional switching of the circuit, so that the water cooling system can be No need to stop, can operate uninterrupted, to achieve the best cooling effect.

It is worth mentioning that when the water cooling system is in the process of switching the first circuit or the second circuit, for example, when switching from the first circuit to the second circuit, the first pump 220 fails and the second The pump 230 is turned on, so that the second blocking surface 342 and the damping member 313 receive the water cooling liquid pushed by the second pump 230, thereby driving the check valve 30 to move from the first position to the second position, During the moving process, both the second blocking surface 342 and the damping member 313 will receive the water cooling liquid, so that the non-return valve 30 can be moved and positioned to the positioning section 213 of the first shaft hole 12, so that the water cooling can be achieved. The system can run continuously without shutting down, so it can run uninterruptedly to achieve the best heat dissipation effect, whereby the water cooling liquid of the first pump 220 and the second pump 230 is respectively received through the check valve 30 , Then, the pressure on the first blocking surface 341 or the second blocking surface 342 is used as a nuclear mechanism to achieve the effect of two-way switching.

The first blocking surface 341 and the second blocking surface 342 are provided with the conical groove 343, so the water cooling liquid can pass along the slope of the conical groove 343 toward the first through hole 36 or the second through hole 38, which reduces the phenomenon of turbulent flow and improves the flow rate and flow of the water cooling liquid.

It is worth mentioning that, since the protrusions 421 of the rotary joint 40 protrude out of the limiting section 212 and are locked in the through holes 21 , the rotary joint 40 can rotate on the limiting section 212 . Therefore, the The rotary joint 40 can be corresponding to the angles of the first connecting pipe 310 and the second connecting pipe 320 , and the position of the rotary joint 40 can be adjusted to facilitate the installation of the core valve 100 .

It is worth mentioning that, since the positioning ring 33 is sandwiched between the first shaft hole 12 and the second shaft hole 13 and the positioning plug 20 respectively, the positioning plug 20 and the rotating screw head The stop rings 44 are respectively sandwiched between the 40s to prevent the water cooling liquid from overflowing in the process of circulation, so as to achieve a better leak-proof design.

The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention is subject to the claims.

Claims (8)

1. a water-cooling device of a switchable pump circuit, is characterized in that, comprises: a water tank, which is provided with a water cooling liquid; a first pump, the water inlet of which is connected to the water delivery port of the water tank; a second pump, the water inlet of which is connected to the water delivery port of the water tank; a control unit, which is electrically connected to the first pump and the second pump, respectively; A core valve, which has a body, the body is provided with a chamber, the chamber includes a first shaft hole, a second shaft hole and an output hole that communicate with each other, the first shaft hole is connected to the first shaft hole pump, the second shaft hole is connected to the second pump, the chamber is provided with a check valve, the check valve can move in the chamber, and defines a first position and a second position, when the check valve is When the reverse valve is at the first position, the first shaft hole is communicated with the output hole, and the second shaft hole is not communicated with the first shaft hole and the output hole respectively. When the check valve is at the second position, The second shaft hole is communicated with the output hole, and the first shaft hole is not communicated with the second shaft hole and the output hole respectively; a cold water absorbing cold head, which is connected to the output hole of the nuclear valve; a heat-dissipating water-cooling row, the first end of which is connected to the water-absorbing cooling head, and the second end of which is connected to the water tank; A first circuit, when the non-return valve is at the first position, the water tank, the first pump, the first shaft hole of the nuclear valve, the output hole of the nuclear valve, the water absorption cold head and The cooling water cooling row is connected; A second circuit, when the non-return valve is at the second position, the water tank, the second pump, the second shaft hole of the nuclear valve, the output hole of the nuclear valve, the water absorption cold head and The heat-dissipating water-cooling row is connected. 2 . The water cooling device with switchable pump circuit according to claim 1 , wherein the non-return valve has an actuating element, and both ends of the actuating element correspond to the first shaft hole and the second shaft. 3 . The hole is provided with a first opening and a second opening, and the core is provided with a baffle plate, and the baffle plate forms a first blocking surface and a second blocking surface corresponding to the first shaft hole and the second shaft hole respectively, The first blocking surface and the second blocking surface are respectively provided with a conical groove, a first channel and at least one first through hole communicating with the first opening are formed between the first opening and the first blocking surface, The first channel communicates with the output hole, a second channel and at least one second through hole communicate with the second opening between the second opening and the second blocking surface, and the second channel communicates with the output hole , wherein the length of the check valve along the long axis is less than the length of the body along the long axis, when the check valve is in the first position, the baffle closes the second passage, and the first shaft hole, the A channel communicates with the output hole, when the check valve is in the second position, the baffle closes the first channel, and the second shaft hole, the second channel and the output hole communicate with each other. 3 . The water cooling device with switchable pump circuit according to claim 2 , wherein the first shaft hole and the second shaft hole are respectively provided with an inner thread, and the first shaft hole and the second shaft hole are respectively set. 4 . A positioning plug is respectively passed through, each positioning plug has a first end and a second end, and a through hole is penetrated between the first end and the second end, and the outer peripheral wall of each positioning plug is in the The first end is provided with a stopper, and the outer diameter of the stopper is larger than the inner diameter of the first shaft hole and the inner diameter of the second shaft hole, so that the stopper can stop the first shaft hole respectively And the second shaft hole, the outer peripheral wall of each positioning plug is respectively provided with a groove on the side of the stopper, and the outer peripheral wall of each positioning plug is respectively provided with a groove on the side of the groove. thread, so that the positioning plug can be screwed on the inner thread of the first shaft hole and the second shaft hole respectively, the groove is respectively provided with a sealing ring, and the hole is provided with a stopper at the first end A stop section, the inner diameter of the stop section is larger than the inner diameter of the through hole, the through hole is provided with a limit section on the side of the stop section, the inner diameter of the limit section is smaller than the inner diameter of the through hole, the The hole is provided with a positioning section at the second end, the inner diameter of the positioning section is larger than the inner diameter of the hole, and an expanding section is also arranged between the positioning section and the hole, and the inner diameter of the expanding section is directed toward the hole. The second end direction gradually increases. 4 . The water-cooling device with switchable pump circuit according to claim 3 , wherein the through hole of each positioning plug is provided with a rotary joint, the rotary joint has a first end and a second end, the first end A through hole is formed between one end and the second end, and a screw head is formed radially outward from the first end of the rotary joint, the screw head protrudes from the through hole of the positioning plug, and the through hole is in the The first end is provided with an internal thread, and the rotary joint is further provided with a stop ring, the stop ring is respectively accommodated in the stop section, and the stop ring is sandwiched between the screw head and the stop Between the stoppers, the second end of the rotary joint is placed in the limiting section, and the outer peripheral wall of the second end is provided with a plurality of protrusions at intervals, and the protrusions of the rotary joint pass through the limiting section and Being clamped on the through hole, the rotary joint can rotate on the limiting section. 5 . The water-cooling device with switchable pump circuit according to claim 3 , wherein a ring groove is concavely formed on the core element, and a positioning ring is sleeved on the ring groove, and the outer diameter of the positioning ring is smaller than the The inner diameter of the positioning segment, and the outer diameter of the positioning ring is larger than the inner diameter of the expanding diameter segment. 6 . The water cooling device with switchable pump circuit according to claim 3 , wherein each positioning plug is provided with a rotating screw from the head toward the pipe portion, and the rotating screw corresponds to the head. 7 . And the pipe part is provided with a screw head and a hollow shaft part, the outer peripheral wall spacer ring at one end of the shaft part is provided with a plurality of protrusions, and the screw head is respectively connected to the second connecting pipe and the fourth connecting pipe. Connecting pipe. 7 . The water-cooling device with switchable pump circuit according to claim 2 , wherein the core element is provided with a damping element at the first opening and the second opening respectively, and the damping element is the non-return valve. 8 . On the end faces at both ends, the size of the damping member can be increased by reducing the inner diameters of the first opening and the second opening, thereby increasing the damping value. 8 . The water cooling device with switchable pump circuit according to claim 2 , wherein the first shaft hole and the second shaft hole are respectively disposed on two opposite sides of the main body, and the first shaft hole The central axis of the second shaft hole is located on the same axis, and the check valve is provided with the baffle plate in the direction perpendicular to the axis.