Flow divider valve for loop pipeline

Abstract

The invention discloses a diverter valve for a loop pipeline, and mainly relates to the technical field of diverter valves. Comprising a valve body communicated with a water inlet pipe, a first flow dividing pipe and a second flow dividing pipe, the valve body is provided with an inlet communicated with the water inlet pipe, a first outlet and a second outlet, the first outlet and the second outlet are communicated with the first flow dividing pipe and the second flow dividing pipe, and the valve body is provided with a first air hole communicated with the inlet and the first outlet. A valve rod is connected to the valve body in a sliding mode, a first valve plate and a second valve plate are arranged at the end of the valve rod, the first valve plate and the second valve plate make contact with the first air hole and the second air hole respectively, and the valve further comprises a driven wheel driving the valve rod to move up and down. The switching device has the beneficial effects that the problem that the states of the series-parallel loops are inconvenient to switch quickly is solved, the efficiency of switching the states of the outlets of the loops is improved, and the cost required for manufacturing the switching device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of diverter valves, in particular to a diverter valve for a loop pipeline. Background Art

[0002] In a circulating loop pipeline system, it is necessary to switch the opening and closing states of each outlet of the loop pipeline, thereby changing the flow rate and flow rate of each branch pipeline to meet the needs in different situations.

[0003] Existing loop switching devices generally include valves arranged at the inlets and outlets of multiple loops. The opening and closing of several valves are controlled to control the opening and closing of corresponding pipelines to achieve loop switching. This increases the cost of manufacturing the switching device to a certain extent, and is not convenient for quickly switching the state of series and parallel loops. Summary of the invention

[0004] The object of the present invention is to provide a diverter valve for a loop pipeline to solve the problem of inconvenience in quickly switching the series-parallel loop state, improve the efficiency of switching the various outlet states of the loop, and reduce the cost required to manufacture the switching device.

[0005] In order to achieve the above-mentioned purpose, the invention is implemented through the following technical solutions: A diverter valve for a loop pipeline, comprising a valve body respectively connected to a water inlet pipe, a first diverter pipe and a second diverter pipe, the valve body being provided with an inlet connected to the water inlet pipe, and a first outlet and a second outlet connected to the first diverter pipe and the second diverter pipe, the valve body being provided with a first air hole connecting the inlet and the first outlet, and a second air hole connecting the inlet and the second outlet, a valve stem being slidably connected to the valve body, a first valve plate and a second valve plate being provided at the ends of the valve stem, the first valve plate and the second valve plate being respectively in contact with the first air hole and the second air hole, and also comprising a driven wheel driving the valve stem to move up and down.

[0006] Furthermore, the driven wheel is rotatably arranged on the valve body, a plurality of first columns are respectively arranged on one side of the driven wheel, a lever and a second column are arranged on the top of the valve stem, an L-shaped block is rotatably connected to the valve body, one end of the L-shaped block is provided with a slide groove which is in sliding contact with the second column, the first column is respectively in contact with one side of the L-shaped block and the lever, and drives the valve stem to move on the valve body.

[0007] Furthermore, the ends of the lever and the first column are respectively provided with a first slider and a second slider, and the top of the lever is respectively provided with a first vertical groove and a second vertical groove slidably connected to the first slider and the second slider.

[0008] Furthermore, the first sliding block is symmetrically slidably connected with a limiting block, a plurality of grooves are respectively arranged on both sides of the first vertical groove, and protrusions contacting the grooves are respectively arranged on both sides of the limiting block.

[0009] Furthermore, first inclined surfaces contacting the groove are respectively provided on both sides of the protrusion, and a first spring is provided between the two limit blocks.

[0010] Furthermore, a fixed block is slidably connected to the first slider, one end of the fixed block is provided with a second inclined surface in contact with the limit block, the other end of the fixed block is provided with a T-slot, a first screw is threadedly connected to the first slider, the end of the first screw is provided with a T-block rotatably connected to the T-slot, and both sides of the T-block are provided with contacts with the T-slot.

[0011] Furthermore, third inclined surfaces are respectively provided on both sides of the second sliding block, second screw rods are respectively threadedly connected to both sides of the valve stem, and the ends of the second screw rods are rotatably connected to rollers that are in rolling contact with the third inclined surfaces.

[0012] Furthermore, a plurality of third columns are provided on one side of the driven wheel, and the driven wheel also includes a motor and a driving wheel rotatably arranged on the valve body, and a plurality of arc blocks are respectively provided on the driving wheel, and both sides of the arc blocks are in contact with the side surfaces of the plurality of third columns at the same time, and limit the rotation of the driven wheel on the valve body, and a fourth column is provided between two adjacent arc blocks, and the fourth column is in contact with the third columns in turn, and drives the driven wheel to rotate on the valve body, and the movable end of the motor is connected to the driving wheel.

[0013] Furthermore, the first valve plate and the second valve plate are slidably arranged on the valve stem, and blocks are respectively provided on the upper and lower sides of the first valve plate and the second valve plate, wherein second springs are respectively provided between the two blocks and the first valve plate and the second valve plate, and the first air hole and the second air hole are conical, and the ends of the first valve plate and the second valve plate are provided with conical surfaces in contact with the first air hole and the second air hole.

[0014] Furthermore, the first diverter pipe includes a single large-diameter first U-shaped tube, the second diverter pipe includes a plurality of small-diameter second U-shaped tubes, and a connecting tube arranged between the second U-shaped tube and the valve body, the end of the connecting tube is provided with a connecting flange, and also includes a flange plate arranged at the end of the plurality of second U-shaped tubes and connected to the connecting flange.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The inlet, the first outlet and the second outlet of the valve body are connected to the water inlet pipe, the first shunt pipe and the second shunt pipe respectively. During normal operation, the first valve plate and the second valve plate are not in contact with the first air hole and the second air hole. After the circulating medium flows into the valve body from the water inlet pipe, it flows out from the first outlet and the second outlet respectively and enters the first shunt pipe and the second shunt pipe. At this time, the flow rate of the coal medium is in a normal state, meeting the requirements of the circulation system under normal conditions; When only the first shunt pipe is needed, the driven wheel drives the valve stem to move on the valve body, so that the second valve plate provided at the end of the valve stem contacts the second air hole, thereby blocking the second air hole and limiting the medium from flowing into the second shunt pipe, so that the coal medium is only transferred to the first shunt pipe; When only the second shunt pipe is needed, the driven wheel drives the valve stem to move on the valve body, so that the first valve plate provided at its end contacts the first air hole, thereby blocking the first air hole and limiting the medium from flowing into the first shunt pipe, so that the coal medium is only transferred to the second shunt pipe, thereby meeting the needs of the circulation system under special circumstances; 2. Only one valve stem needs to be controlled to switch the multi-loop pipelines, which greatly improves the efficiency of switching the series and parallel loops. At the same time, only one valve is needed to control the switching of the multi-loop pipelines, which reduces the cost of manufacturing the switching device. 3. When the loop needs to be switched to the first shunt pipe, the valve stem is driven to move upward on the valve body through the cooperation among the driven wheel, the first column, the L-shaped block, the valve body, the slide groove and the second column until the first column passes through the L-shaped block, and the second valve plate contacts the second air hole, thereby blocking the second air hole and only transferring the coal medium to the first shunt pipe, thereby meeting the needs of the circulation system under special circumstances; When the loop needs to be switched to a normal state, the valve body is driven to move downward through the cooperation among the driven wheel, the first column, the L-shaped block and the lever until the second valve plate slides out of the second air hole, thereby unblocking the second air hole and switching the loop to a normal state to meet the needs of the circulation system under normal conditions; When the loop needs to be switched to the second shunt pipe, the driven wheel, the first column and the lever are cooperated to drive the lever to continue to move downward, driving the valve stem to move downward on the valve body until the first column passes the lever, and the first valve plate contacts the first air hole, thereby blocking the first air hole and only transferring the coal medium to the second shunt pipe, thereby meeting the needs of the circulation system under special circumstances; 4. When the second valve plate is worn to a certain thickness, the first screw is rotated to release the limiting effect on the limit block. At the same time, the first vertical groove, the first slider, the limit block, the convex block, the groove, the first inclined surface, and the first spring cooperate to allow the first slider to slide relative to the valve body and slide the first slider downward to a suitable position, so that the first column contacts the lever earlier. When the first column is about to pass the L-shaped block, it will move a small end upward from the valve stem than before, compensating for the error caused by the wear of the second valve plate, thereby ensuring that the second valve plate can still stably block the second air hole after being used for a period of time, thereby extending the service life of the switching device and reducing the cost required for maintaining the switching device. After the position of the first slider is adjusted, the first slider, the first screw, the T-block, the T-slot, the fixing block, the second inclined surface and the limiting block are matched to limit the movement of the limiting block inwards. At the same time, the resistance generated by the contact between the protrusion and the groove will limit the sliding of the first slider relative to the valve body, thereby achieving the fixation of the first slider after adjustment, avoiding the external force from accidentally driving the first slider to move, resulting in a change in the closing position of the first valve plate, affecting the effect of the first valve plate blocking the first air hole, and thus ensuring the normal operation of the circulation system; 5. When the first valve plate is worn to a certain thickness, the restriction on the upward sliding of the second slider is released by loosening the second screw on the upper side, and then the position of the second slider in the second vertical groove is adjusted upward by the cooperation between the second screw, the roller and the third inclined surface, so that the first column contacts the lever earlier. When the first column is about to pass the lever, it will move a small distance from the valve stem downward than before, compensating for the error caused by the wear of the first valve plate, thereby ensuring that the first valve plate and the second valve plate can still stably block the first air hole and the second air hole after being used for a period of time, thereby extending the service life of the switching device and reducing the cost required for maintaining the switching device; 6. When the driven wheel needs to be rotated, the motor drives the driving wheel to rotate on the valve body, and the cooperation between the fourth column and the third column drives the driven wheel to move upward. At the same time, the cooperation between the first column, the second column and the L-shaped block drives the valve stem to slide on the valve body, thereby switching the state of the loop pipeline to meet the needs in different situations; in addition, after switching the series-parallel loop as a whole, the cooperation between the arc block and the third column will limit the rotation of the driven wheel on the valve body, realizing mechanical self-locking of the driven wheel rotation, avoiding external force from accidentally driving the driven wheel to move, changing the state of each outlet of the loop, and affecting the normal operation of the circulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the structure inside the valve body of the present invention.

[0017] Attached Figure 2 It is a structural schematic diagram of the driven wheel of the present invention.

[0018] Attached Figure 3 It is a structural schematic diagram of the first sliding block of the present invention.

[0019] Attached Figure 4 The present invention is attached Figure 3 Partial cross-sectional view along CC direction.

[0020] Attached Figure 5 It is a schematic structural diagram of the second sliding block of the present invention.

[0021] Attached Figure 6 It is a structural schematic diagram of the driving wheel of the present invention.

[0022] Attached Figure 7 It is a schematic structural diagram of the second U-shaped tube of the present invention.

[0023] Attached Figure 8 The present invention is attached Figure 1 A partial enlarged view of area A in the middle.

[0024] Attached Fig. 9 The present invention is attached Figure 1 A partial enlarged view of area B in the middle.

[0025] Attached Fig.10 It is an isometric view of the L-shaped block of the present invention.

[0026] Numbers shown in the accompanying drawings: 1. Water inlet pipe; 2. First shunt pipe; 3. Second shunt pipe; 4. Valve body; 5. Inlet; 6. First outlet; 7. Second outlet; 8. First air hole; 9. Second air hole; 10. Valve stem; 11. First valve plate; 12. Second valve plate; 13. Driven wheel; 14. first column; 15. lever; 16. second column; 17. L-shaped block; 18. slide groove; 19. first slider; 20. second slider; 21. first vertical groove; 22. second vertical groove; 23. Limit block; 24. Groove; 25. Protrusion; 26. First inclined surface; 27. First spring; 28. Fixing block; 29. ​​Second inclined surface; 30. T-slot; 31. First screw rod; 32. T-block; 33. third inclined plane; 34. second screw rod; 35. roller; 36. third column; 37. motor; 38. driving wheel; 39. arc block; 40. fourth column; 41. Stopper; 42. Second spring; 43. Conical surface; 44. Second U-shaped tube; 45. Connecting tube; 46. Connecting flange; 47. Flange. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0028] The present invention provides a diverter valve for a loop pipeline, such as Figure 1 , Figure 2 , Fig. 9 and Fig.10As shown, it includes a valve body 4 connected to a water inlet pipe 1, a first branch pipe 2 and a second branch pipe 3 respectively. After the circulating medium flows into the valve body 4 from the water inlet pipe 1, it flows out from the first outlet 6 and the second outlet 7 respectively and enters the first branch pipe 2 and the second branch pipe 3. At this time, the flow rate of the medium is in a normal state, meeting the needs of the circulation system under normal conditions; the valve body 4 is provided with an inlet 5 connected to the water inlet pipe 1, and a first outlet 6 and a second outlet 7 connected to the first branch pipe 2 and the second branch pipe 3, the valve body 4 is provided with a first air hole 8 connecting the inlet 5 and the first outlet 6, and a second air hole 9 connecting the inlet 5 and the second outlet 7, the valve body 4 is slidably connected with a valve stem 10, and the ends of the valve stem 10 are provided with a first valve plate 11 and a second valve plate 12, and the first valve plate 11 and the second valve plate 12 are respectively connected to the first air hole 8 and the second air hole 9 is in contact with each other, and also includes a driven wheel 13 that drives the valve stem 10 to move up and down. During normal operation, the first valve plate 11 and the second valve plate 12 are not in contact with the first air hole 8 and the second air hole 9. At this time, the flow rate of the coal medium is in a normal state, meeting the needs of the circulation system under normal conditions; when the second valve plate 12 is in contact with the second air hole 9, the second air hole 9 is blocked by the second valve plate 12, so that the coal medium is only transferred to the first diverter pipe 2; when the first valve plate 11 is in contact with the first air hole 8, the first air hole 8 is blocked by the first valve plate 11, restricting the medium from flowing into the first diverter pipe 2, so that the coal medium is only transferred to the second diverter pipe 3; in addition, only the movement of one valve stem 10 needs to be controlled to realize the switching of multi-loop pipelines, which greatly improves the efficiency of switching series-parallel loops. At the same time, only one valve is needed to control the switching of multi-loop pipelines, reducing the cost required for manufacturing the switching device.

[0029] Preferably, Figure 2 , Figure 4 , Figure 5 , Fig. 9 and Fig.10As shown, the driven wheel 13 is rotatably arranged on the valve body 4, and a plurality of first columns 14 are respectively arranged on one side of the driven wheel 13, a lever 15 and a second column 16 are arranged on the top of the valve stem 10, an L-shaped block 17 is rotatably connected to the valve body 4, and one end of the L-shaped block 17 is provided with a slide groove 18 which is in sliding contact with the second column 16, and the first column 14 is respectively in contact with one side of the L-shaped block 17 and the lever 15, and when the driven wheel 13 is rotated on the valve body 4 counterclockwise, the first column 14 on the driven wheel 13 is in contact with one side of the L-shaped block 17, and the force generated after the contact drives the L-shaped block 17 to rotate on the valve body 4, and contacts the second column 16 through the slide groove 18 provided on the L-shaped block 17, and the component force generated after the contact drives the valve stem 10 to move upward on the valve body 4 until the first column 14 is about to pass through the L-shaped block 17, and the second valve plate 12 contacts with the second air hole 9, thereby blocking the first column 14. The second air hole 9 limits the medium from flowing into the second shunt pipe 3, switches the loop to the first shunt pipe 2, and thus meets the needs of the circulation system under special circumstances; then the driven wheel 13 is rotated counterclockwise, so that the first column 14 passes through the L-shaped block 17 and contacts the lever 15, and the component force generated after the two contact drives the valve body 4 to move downward until the second valve plate 12 slides out of the second air hole 9, thereby releasing the blockage of the second air hole 9, switching the loop to a normal state, and meeting the needs of the circulation system under normal circumstances; the driven wheel 13 is further rotated counterclockwise, so that the first column 14 further contacts the lever 15, and drives the lever 15 to continue to move downward, until the first column 14 passes the lever 15, the first valve plate 11 contacts the first air hole 8, thereby blocking the first air hole 8, limiting the medium from flowing into the first shunt pipe 2, and thus switching the loop to the second shunt pipe 3, meeting the needs of the circulation system under normal circumstances.

[0030] Preferably, Figure 2 , Figure 4 , Figure 5 , Fig. 9 and Fig.10As shown, the ends of the lever 15 and the first column 14 are respectively provided with a first slider 19 and a second slider 20, and the top of the lever 15 is respectively provided with a first vertical groove 21 and a second vertical groove 22 slidably connected to the first slider 19 and the second slider 20. By sliding the first slider 19 downward in the first vertical groove 21, the first column 14 is brought into contact with the lever 15 earlier. When the first column 14 is about to pass through the L-shaped block 17, it will move a small end upward from the valve stem 10 than before, thereby compensating for the error caused by the wear of the second valve plate 12. In addition, by sliding the second slider 20 upward in the second vertical groove 22, the first column 14 is brought into contact with the lever 15 earlier. When the first column 14 is about to pass through the lever 15, it will move a small end downward from the valve stem 10 than before, thereby compensating for the error caused by the wear of the first valve plate 11, thereby ensuring that the first valve plate 11 and the second valve plate 12 can still stably block the first air hole 8 and the second air hole 9 after being used for a period of time, thereby extending the service life of the switching device and reducing the cost required for maintaining the switching device.

[0031] Preferably, Figure 2 , Figure 3 , Figure 4 , Fig. 9 and Fig.10 As shown, the first slider 19 is symmetrically connected to the limiting block 23, and a plurality of grooves 24 are respectively provided on both sides of the first vertical groove 21. The limiting block 23 is respectively provided with protrusions 25 in contact with the grooves 24 on both sides. The contact between the plurality of protrusions 25 and the grooves 24 generates a force that limits the first slider 19 from sliding in the first vertical groove 21, thereby achieving the fixation of the first slider 19 after adjustment, and preventing the external force from accidentally driving the first slider 19 to move, resulting in a change in the closing position of the first valve plate 11, affecting the effect of the first valve plate 11 blocking the first air hole 8, and thereby ensuring the normal operation of the circulation pipeline system.

[0032] Preferably, Figure 3 As shown, first inclined surfaces 26 contacting the groove 24 are respectively provided on both sides of the protrusion 25, and a first spring 27 is provided between the two limit blocks 23 to facilitate the first slider 19 to slide in the first vertical groove 21, thereby improving the efficiency of adjusting the position of the first slider 19.

[0033] Preferably, Figure 3 and Figure 4As shown, a fixing block 28 is slidably connected to the first slider 19, one end of the fixing block 28 is provided with a second inclined surface 29 in contact with the limit block 23, and the other end of the fixing block 28 is provided with a T-slot 30. A first screw rod 31 is threadedly connected to the first slider 19, and a T-block 32 rotatably connected to the T-slot 30 is provided at the end of the first screw rod 31. Both sides of the T-block 32 are provided with contacts with the T-slot 30. By rotating the first screw rod 31 on the first slider 19, it moves on the first slider 19, and the T-block 32 provided at the end of the first screw rod 31 is in contact with the T-slot 30. The component force generated drives the fixing block 28 to move along with the first screw rod 31 until the second inclined surface 29 provided at the end of the fixing block 28 contacts one side of the limit block 23, thereby limiting the movement of the limit block 23 inward. At the same time, the resistance generated by the contact between the protrusion 25 and the groove 24 will limit the sliding of the first slider 19 relative to the valve body 4, thereby realizing the fixation of the first slider 19 after adjustment, preventing the external force from accidentally driving the first slider 19 to move, resulting in a change in the closing position of the first valve plate 11, affecting the effect of the first valve plate 11 blocking the first air hole 8, and thus ensuring the normal operation of the circulation system.

[0034] Preferably, Figure 5 As shown, the second slider 20 is provided with a third inclined surface 33 on both sides, and the valve stem 10 is respectively threadedly connected with a second screw rod 34 on both sides. The end of the second screw rod 34 is rotatably connected with a roller 35 that rolls with the third inclined surface 33. By loosening the second screw rod 34 on the upper side, the restriction on the second slider 20 sliding upward is released, and then the second screw rod 34 on the lower side is further tightened. The roller 35 provided at the end of the second screw rod 34 on the lower side rolls with the third inclined surface 33, and the force generated will drive the second slider 2 0 slides in the second vertical groove 22, repeats the above action several times, adjusts the position of the second slider 20 in the second vertical groove 22, makes the first column 14 contact with the lever 15 earlier, when the first column 14 will pass the lever 15, it will move a small end downward from the valve stem 10 than before, compensates for the error caused by the wear of the first valve plate 11, thereby ensuring that the first valve plate 11 and the second valve plate 12 can still stably block the first air hole 8 and the second air hole 9 after being used for a period of time, prolongs the service life of the switching device, and reduces the cost required for maintaining the switching device.

[0035] Preferably, Figure 2 , Figure 6 , Fig. 9 and Fig.10As shown, a plurality of third columns 36 are provided on one side of the driven wheel 13, and the driven wheel 13 also includes a motor 37 and a driving wheel 38 rotatably arranged on the valve body 4. The driving wheel 38 is respectively provided with a plurality of arc blocks 39. Both sides of the arc blocks 39 are in contact with the side surfaces of the plurality of third columns 36 at the same time. The force generated after the contact will limit the rotation of the driven wheel 13 on the valve body 4, so as to avoid the external force from accidentally driving the driven wheel 13 to move, changing the overall series-parallel loop, and affecting the normal operation of the heat exchange system. A fourth column 40 is provided between two adjacent arc blocks 39, and the fourth column 40 contacts the third column 36 in turn, and drives the driven wheel 13 to rotate on the valve body 4. Through the cooperation of the first column 14, the second column 16 and the L-shaped block 17, the valve stem 10 is driven to slide on the valve body 4, thereby switching the state of the loop pipeline to meet the needs in different situations; the movable end of the motor 37 is connected to the driving wheel 38 to provide power for the rotation of the driving wheel 38.

[0036] Preferably, Figure 1 and Figure 8 As shown, the first valve plate 11 and the second valve plate 12 are slidably arranged on the valve stem 10, and the first valve plate 11 and the second valve plate 12 are respectively provided with stoppers 41 on the upper and lower sides, wherein second springs 42 are respectively provided between the two stoppers 41 and the first valve plate 11 and the second valve plate 12 to compensate for the error generated during the movement of the valve stem 10, and at the same time, the rebound force generated by the compression of the second spring 42 acts on the first valve plate 11 or the second valve plate 12, so that the first valve plate 11 and the second valve plate 12 will be further sunk into the first air hole 8 and the second air hole 9, further squeezing the first valve plate 11 and the second valve plate 12, thereby increasing the first valve plate 11 and the second valve plate 12 blocking the second air hole 8 and the second air hole 9. The sealing performance of the first air hole 8 and the second air hole 9 improves the overall stability of the switching valve; the first air hole 8 and the second air hole 9 are conical, and the ends of the first valve plate 11 and the second valve plate 12 are provided with a conical surface 43 in contact with the first air hole 8 and the second air hole 9, so that when water pressure acts on the first valve plate 11 and the second valve plate 12, the first valve plate 11 and the second valve plate 12 will be further sunken into the first air hole 8 and the second air hole 9. Since the first air hole 8 and the second air hole 9 are conical, the first valve plate 11 and the second valve plate 12 will be further squeezed, thereby increasing the sealing performance of the first valve plate 11 and the second valve plate 12 in blocking the first air hole 8 and the second air hole 9, thereby ensuring the normal operation of the circulation system.

[0037] Preferably, Figure 1 and Figure 7As shown, the first shunt pipe 2 includes a single large-diameter first U-shaped pipe, the second shunt pipe 3 includes a plurality of small-diameter second U-shaped pipes 44, and a connecting pipe 45 arranged between the second U-shaped pipe 44 and the valve body 4, so as to guide the medium to different pipelines to meet the needs in different situations; the end of the connecting pipe 45 is provided with a connecting flange 46, and also includes a flange plate 47 arranged at the end of the plurality of second U-shaped pipes 44 and connected to the connecting flange 46, so as to introduce the coal medium into the second shunt pipe 3, and at the same time, the plurality of parallel second U-shaped pipes 44 are detachably connected to the valve body 4, so as to facilitate the subsequent replacement and maintenance of the second U-shaped pipe 44; in addition, it also includes a reflux pipe connected to the first U-shaped pipe and the second U-shaped pipe 44.

[0038] Example 1 The present invention provides a diverter valve for a loop pipeline, such as Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, the diverter valve can be used in a heat pump system to realize the series-parallel loop switching in the heat pump system. Specifically, after the inlet 5, the first outlet 6 and the second outlet 7 of the valve body 4 are connected to the water inlet pipe 1, the first diverter pipe 2 and the second diverter pipe 3 respectively, the circulating medium flows into the valve body 4 from the water inlet pipe 1, and flows out from the first outlet 6 and the second outlet 7 respectively. After entering the first diverter pipe 2 and the second diverter pipe 3, the medium exchanges heat with the soil through the wall of the buried pipe, thereby realizing cooling in summer and heating in winter. During normal operation, the first valve plate 11 and the second valve plate 12 are not in contact with the first air hole 8 and the second air hole 9, and the medium exchanges heat with the soil through the walls of the first shunt pipe 2 and the second shunt pipe 3, respectively. At this time, the flow rate and temperature difference of the coal medium are in a normal state, meeting the heating and cooling needs under normal conditions; When a higher temperature difference is required for heating or cooling, the valve stem 10 is driven by the driven wheel 13 to move on the valve body 4, so that the second valve plate 12 provided at its end contacts the second air hole 9, thereby blocking the second air hole 9, limiting the medium from flowing into the second shunt pipe 3, and continuously exchanging heat with the ground through the large-diameter buried pipe, so that the heat exchange effect is continuously superimposed, thereby meeting the heat exchange demand with a large temperature difference and improving the heat exchange efficiency of the buried pipe; When a large amount of heat supply with a low temperature difference is required quickly, the valve stem 10 is driven by the driven wheel 13 to move on the valve body 4, so that the first valve plate 11 provided at its end contacts the first air hole 8, thereby blocking the first air hole 8, limiting the medium from flowing into the first shunt pipe 2, and exchanging heat with the ground through a plurality of small-diameter second shunt pipes 3, dispersing the pressure exerted by the hot coal on the buried pipe, avoiding excessive pressure at the outlet of the buried pipe, thereby meeting the demand for faster flow rate and improving the heat exchange efficiency of the buried pipe; In addition, the switching of multi-loop pipelines can be achieved by controlling the movement of only one valve stem 10, which greatly improves the efficiency of switching series and parallel loops. At the same time, only one valve is needed to control the switching of multi-loop pipelines, reducing the cost required to manufacture the switching device.

[0039] Example 2 On the basis of Example 1, Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, when the loop needs to be switched to the first shunt pipe 2, the driven wheel 13 is rotated counterclockwise so that the first column 14 on the driven wheel 13 contacts one side of the L-shaped block 17. The force generated after the contact drives the L-shaped block 17 to rotate on the valve body 4, and contacts the second column 16 through the slide groove 18 provided on the L-shaped block 17. The component force generated after the contact drives the valve stem 10 to move upward on the valve body 4 until the first column 14 passes through the L-shaped block 17, and the second valve plate 12 contacts the second air hole 9, thereby blocking the second air hole 9 and limiting the medium from flowing into the second shunt pipe 3, and switching the loop to the first shunt pipe 2, thereby meeting the heat exchange demand with a large temperature difference and improving the heat exchange efficiency of the buried pipe; When the loop needs to be switched to the normal state, the driven wheel 13 is then rotated counterclockwise so that the first column 14 passes through the L-shaped block 17 and contacts the lever 15. The component force generated by the contact between the two drives the valve body 4 to move downward until the second valve plate 12 slides out of the second air hole 9, thereby unblocking the second air hole 9 and switching the loop to the normal state to meet the heating and cooling needs under normal conditions. When it is necessary to switch the loop to the second shunt pipe 3, the driven wheel 13 is further rotated counterclockwise so that the first column 14 further contacts the lever 15, and the lever 15 is driven to continue to move downward until the first column 14 passes the lever 15, and the first valve plate 11 contacts the first air hole 8, thereby blocking the first air hole 8, restricting the medium from flowing into the first shunt pipe 2, and thereby switching the loop to the second shunt pipe 3, dispersing the pressure exerted by the hot coal on the buried pipe, avoiding excessive pressure at the outlet of the buried pipe, and thus achieving the demand for faster flow rate and improving the heat exchange efficiency of the buried pipe.

[0040] Example 3 On the basis of Example 2, Figure 3 , Figure 4 and Figure 5As shown, when the second valve plate 12 is worn to a certain thickness, the first screw rod 31 is rotated to release the limiting effect on the limit block 23, and the first slider 19 is slid on the first vertical groove 21, driving a plurality of protrusions 25 provided on one side of the limit block 23 to move relative to the groove 24, so that after the first inclined surfaces 26 provided on both sides of the protrusion 25 contact the groove 24, the component force generated drives the limit block 23 to slide inward and compresses the first spring 27, so that the first slider 19 can slide relative to the valve body 4 until the protrusion 25 moves into the next groove 24, and the first spring 27 compresses the first slider 19. Under the action of the rebound force generated after the contraction, the drive moves toward both sides, so that the protrusion 25 re-enters the groove 24, and the above steps are repeated to adjust the first slider 19 to a suitable position, so that the first column 14 contacts the lever 15 earlier. When the first column 14 will pass through the L-shaped block 17, it will move a small end upward from the valve stem 10 than before, compensating for the error caused by the wear of the second valve plate 12, thereby ensuring that the second valve plate 12 can still stably block the second air hole 9 after being used for a period of time, thereby extending the service life of the switching device and reducing the cost required for maintaining the switching device; After adjusting the position of the first slider 19, the first screw rod 31 is rotated on the first slider 19 to move on the first slider 19, and the T-block 32 provided at the end of the first screw rod 31 contacts the T-slot 30, and the component force generated drives the fixing block 28 to move along with the first screw rod 31 until the second inclined surface 29 provided at the end of the fixing block 28 contacts one side of the limit block 23, thereby limiting the movement of the limit block 23 inward. At the same time, the resistance generated by the contact between the protrusion 25 and the groove 24 will limit the sliding of the first slider 19 relative to the valve body 4, thereby achieving the fixation of the first slider 19 after adjustment, avoiding the external force from accidentally driving the first slider 19 to move, resulting in a change in the closed position of the first valve plate 11, affecting the effect of the first valve plate 11 blocking the first air hole 8, thereby ensuring the normal operation of the heat exchange system and improving the heat exchange efficiency of the buried pipe. When the first valve plate 11 is worn to a certain thickness, the restriction on the second slider 20 sliding upward is released by loosening the second screw rod 34 on the upper side, and then the second screw rod 34 on the lower side is further tightened. The roller 35 provided at the end of the second screw rod 34 on the lower side rolls in contact with the third inclined surface 33, and the force generated will drive the second slider 20 to slide in the second vertical groove 22. The above action is repeated multiple times to adjust the position of the second slider 20 in the second vertical groove 22 so that the first column 14 contacts the lever 15 earlier. When the first column 14 is about to pass the lever 15, it will move a small end downward from the valve stem 10 than before, thereby compensating for the error caused by the wear of the first valve plate 11, thereby ensuring that the first valve plate 11 and the second valve plate 12 can still stably block the first air hole 8 and the second air hole 9 after being used for a period of time, thereby extending the service life of the switching device and reducing the cost required for maintaining the switching device.

[0041] Example 4 On the basis of Example 1, Figure 2 , Figure 6 , Fig. 9 and Fig.10 As shown, when the driven wheel 13 needs to be rotated, the motor 37 drives the driving wheel 38 to rotate on the valve body 4, driving the arc block 39 and the fourth column 40 on the driving wheel 38 to move together, so that the arc block 39 slides out of the plurality of third columns 36, releasing the restriction on the rotation of the driven wheel 13 on the valve body 4, and then the fourth column 40 contacts the third column 36, and the force generated will drive the driven wheel 13 to move upward, and through the cooperation of the first column 14, the second column 16 and the L-shaped block 17, the valve stem 10 will be driven to slide on the valve body 4, thereby switching the state of the series-parallel loop to meet the needs in different weather conditions; in addition, after switching the series-parallel loop as a whole, the arc block 39 contacts the side surfaces of the plurality of third columns 36 again at the same time, and the force generated after the contact will limit the rotation of the driven wheel 13 on the valve body 4, avoiding the external force from accidentally driving the driven wheel 13 to move, changing the overall series-parallel loop, and affecting the normal operation of the heat exchange system.

Claims

1. A flow divider valve for a loop pipeline, comprising a valve body (4) respectively connected to a water inlet pipe (1), a first flow divider pipe (2) and a second flow divider pipe (3), characterized in that: The valve body (4) is provided with an inlet (5) connected to the water inlet pipe (1), and a first outlet (6) and a second outlet (7) connected to the first branch pipe (2) and the second branch pipe (3); the valve body (4) is provided with a first air hole (8) connected to the inlet (5) and the first outlet (6), and a second air hole (9) connected to the inlet (5) and the second outlet (7); the valve body (4) is slidably connected to a valve stem (10); a first valve plate (11) and a second valve plate (12) are provided at the ends of the valve stem (10); the first valve plate (11) and the second valve plate (12) are in contact with the first air hole (8) and the second air hole (9) respectively; and the valve body also includes a driven wheel (13) for driving the valve stem (10) to move up and down.

2. A flow diverter valve for a loop pipeline according to claim 1, characterized in that: The driven wheel (13) is rotatably mounted on the valve body (4); a plurality of first columns (14) are respectively arranged on one side of the driven wheel (13); a lever (15) and a second column (16) are arranged on the top of the valve stem (10); an L-shaped block (17) is rotatably connected to the valve body (4); one end of the L-shaped block (17) is provided with a slide groove (18) which is in sliding contact with the second column (16); the first column (14) is respectively in contact with one side of the L-shaped block (17) and the lever (15), and drives the valve stem (10) to move on the valve body (4).

3. A flow diverter valve for a loop pipeline according to claim 2, characterized in that: The ends of the lever (15) and the first column (14) are respectively provided with a first sliding block (19) and a second sliding block (20), and the top of the lever (15) is respectively provided with a first vertical groove (21) and a second vertical groove (22) which are slidably connected to the first sliding block (19) and the second sliding block (20).

4. A flow diverter valve for a loop pipeline according to claim 3, characterized in that: The first sliding block (19) is symmetrically slidably connected to a limit block (23), a plurality of grooves (24) are respectively provided on both sides of the first vertical slot (21), and protrusions (25) in contact with the grooves (24) are respectively provided on both sides of the limit block (23).

5. A flow divider valve for a loop pipeline according to claim 4, characterized in that: First inclined surfaces (26) in contact with the groove (24) are respectively provided on both sides of the protrusion (25), and a first spring (27) is provided between the two limit blocks (23).

6. A flow diverter valve for a loop pipeline according to claim 4, characterized in that: A fixing block (28) is slidably connected to the first sliding block (19); one end of the fixing block (28) is provided with a second inclined surface (29) in contact with the limit block (23); the other end of the fixing block (28) is provided with a T-shaped slot (30); a first screw rod (31) is threadedly connected to the first sliding block (19); an end of the first screw rod (31) is provided with a T-shaped block (32) rotatably connected to the T-shaped slot (30); and two sides of the T-shaped block (32) are provided with contacts in contact with the T-shaped slot (30).

7. A flow diverter valve for a loop pipeline according to claim 3, characterized in that: The second slider (20) is provided with third inclined surfaces (33) on both sides, the valve stem (10) is threadedly connected with second screw rods (34) on both sides, and the ends of the second screw rods (34) are rotatably connected with rollers (35) in rolling contact with the third inclined surfaces (33).

8. A flow diverter valve for a loop pipeline according to claim 1, characterized in that: A plurality of third columns (36) are provided on one side of the driven wheel (13), and the driven wheel (13) further comprises a motor (37) and a driving wheel (38) rotatably arranged on the valve body (4). The driving wheel (38) is provided with a plurality of arc blocks (39), and both sides of the arc blocks (39) are in contact with the side surfaces of the plurality of third columns (36) at the same time, and restrict the driven wheel (13) from rotating on the valve body (4). A fourth column (40) is provided between two adjacent arc blocks (39), and the fourth column (40) is in contact with the third columns (36) in turn, and drives the driven wheel (13) to rotate on the valve body (4). The movable end of the motor (37) is connected to the driving wheel (38).

9. A flow divider valve for a loop pipeline according to claim 1, characterized in that: The first valve plate (11) and the second valve plate (12) are slidably arranged on the valve stem (10); stoppers (41) are respectively arranged on the upper and lower sides of the first valve plate (11) and the second valve plate (12); second springs (42) are respectively arranged between the two stoppers (41) and the first valve plate (11) and the second valve plate (12); the first air hole (8) and the second air hole (9) are conical; and conical surfaces (43) in contact with the first air hole (8) and the second air hole (9) are arranged at the ends of the first valve plate (11) and the second valve plate (12).

10. A flow divider valve for a loop pipeline according to claim 1, characterized in that: The second flow dividing pipe (3) comprises a single large-diameter first U-shaped pipe, the second flow dividing pipe (3) comprises a plurality of small-diameter second U-shaped pipes (44), and a connecting pipe (45) arranged between the second U-shaped pipe (44) and the valve body (4), the end of the connecting pipe (45) being provided with a connecting flange (46), and further comprising a flange plate (47) arranged at the end of the plurality of second U-shaped pipes (44) and connected to the connecting flange (46).

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