Low-temperature check valve

Abstract

The invention belongs to the technical field of check valves, particularly relates to a low-temperature check valve, and provides the following scheme aiming at solving the problems that part of liquid is left in the check valve after the check valve is closed, so that the part of residual liquid is easy to condense in a low-temperature environment and the operation and use of the check valve are influenced when the check valve is temporarily closed: the low-temperature check valve comprises a check valve body, the check valve comprises a check valve body, a valve body anti-condensation module is arranged on the check valve body, a plurality of fixing bolts are arranged on the check valve body, the same valve top plate is arranged on the outer walls of the multiple fixing bolts, and fixing nuts are arranged on the multiple fixing bolts. The low-temperature check valve disclosed by the invention has the effect of ensuring the operation and use state of the low-temperature check valve, and when the low-temperature check valve is used and closed, a device can transfer heat to the interior of the low-temperature check valve to increase the temperature in the low-temperature check valve, so that residual liquid in the low-temperature check valve is prevented from being condensed when the low-temperature check valve is temporarily closed, subsequent use of the device is ensured, and the service life of the device is prolonged. The use effect of the device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of check valves, and in particular to a low-temperature check valve. Background Art

[0002] The function of a check valve is to allow the medium to flow in one direction only and prevent it from flowing in the opposite direction. Usually this type of valve works automatically. Under the pressure of the fluid flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, the fluid pressure and the self-reclosing valve disc act on the valve seat, thereby cutting off the flow.

[0003] The internal temperature of the existing low-temperature check valve is low when in use, so the interior of the check valve is still in a low-temperature state when the check valve is closed. After the check valve is closed, some liquid will remain inside the check valve. Therefore, the remaining liquid is prone to condensation in a low-temperature environment, resulting in difficulty in opening the subsequent check valve, especially when the check valve is closed for a short time, affecting the operation and use of the check valve. Summary of the invention

[0004] The present invention discloses a low-temperature check valve, which aims to solve the technical problem that the internal temperature of the existing low-temperature check valve in the background technology is low when in use, so the interior of the check valve is still in a low-temperature state when the check valve is closed, and some liquid will remain in the interior of the check valve after closing. Therefore, the remaining part of the liquid is easy to condense in a low-temperature environment, resulting in inconvenience in opening the subsequent check valve, especially when the check valve is temporarily closed, affecting the operation and use of the check valve.

[0005] A low-temperature check valve proposed by the present invention comprises a check valve body, a valve body anti-condensation module is arranged on the check valve body, and a plurality of fixing bolts are arranged on the check valve body, the outer walls of the plurality of fixing bolts are provided with the same valve top plate, the plurality of fixing bolts are provided with fixing nuts, and a sealing gasket is arranged between the valve top plate and the check valve body, a valve body sealing module is arranged inside the check valve body, and a buffer sleeve is fixedly connected to the check valve body, and a valve body buffer module is arranged on the buffer sleeve; The valve body anti-condensation module includes a heat-conducting ring frame, which is located below the check valve body and has two heat-conducting holes. The valve body sealing module includes a valve connecting rod, and the valve connecting rod is located inside the check valve body; The valve body buffer module comprises a buffer rod, the buffer rod is located inside the buffer sleeve seat, and a buffer cushion sleeve is arranged on the buffer rod.

[0006] By providing a check valve body, a valve top plate, fixing bolts, fixing nuts, a sealing gasket ring, a buffer sleeve, a valve body anti-condensation module, a valve body buffer module and a valve body sealing module, the valve body anti-condensation module can transfer heat to the inside of the check valve body after it is closed, so as to prevent the residual liquid inside from condensing after closing, thereby preventing the check valve body from being unable to operate normally due to liquid condensation during short closure, thereby increasing the use effect of the device; the valve body sealing module can increase the sealing effect of the check valve body when it is closed, ensure the sealing performance of the valve plate body and the inner wall of the water inlet, avoid liquid leakage, and meet the sealing requirements of the check valve body; the valve body buffer module can buffer the opened valve plate body when in use, so as to prevent the valve plate body from colliding with the inner wall of the check valve body, thereby preventing damage to the device, thereby increasing the service life of the device. .

[0007] In a preferred embodiment, the valve body anti-condensation module also includes a connecting frame, the connecting frame is fixedly connected to the outer wall of the check valve body, the bottom of the connecting frame is fixedly connected to the heat storage sleeve frame, the interior of the connecting frame is connected to the interior of the heat storage sleeve frame, the heat conduction ring frame is located inside the connecting frame and the heat storage sleeve frame, the inner walls of the two heat conduction holes are movably connected with heat conduction columns, and a driving shaft is provided on the check valve body, the top of the driving shaft is fixedly connected to a driving wheel component, and the driving wheel component is located inside the check valve body; an outer ring component is provided inside the heat storage sleeve frame, the outer wall of the outer ring component is fixedly connected to a gear ring, the outer wall of the driving shaft is fixedly connected to a gear component, the gear component is meshed with the gear ring, and the outer wall of the heat storage sleeve frame is fixedly connected to a bracket component, the bracket component is movably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected to a linkage wheel, and the outer wall of the driving shaft is fixed A transmission wheel is connected, and the outer walls of the transmission wheel and the linkage wheel are provided with the same transmission belt; the outer wall of the rotating shaft is fixedly connected with an inner ring component, and the inner ring component is located inside the heat storage sleeve frame, and the outer wall of the inner ring component and the inner wall of the outer ring component are both provided with friction ring components, and the outer walls of the two friction ring components are respectively in contact with the inner wall and outer wall of the heat-conducting ring frame, and two adjusting seats are fixedly connected to the connecting frame component, and the two adjusting seats are both provided with heat-insulating screw rods, one end of the two heat-insulating screw rods are respectively connected to one end of the two heat-conducting column components, and the other ends of the two heat-insulating screw rods are fixedly connected with adjusting knobs; two through openings are provided on the check valve body, and the inner walls of the two through openings are fixedly connected with sealing ring components, the outer walls of the two heat-conducting column components are respectively in contact with the inner walls of the two sealing ring components, and the other ends of the two heat-conducting column components are fixedly connected with sealing plates, and the two sealing plates are both located inside the check valve body.

[0008] By providing a valve body anti-condensation module, the valve body anti-condensation module can ensure the operating state of the low-temperature check valve. When the low-temperature check valve is closed for use, the device can transfer heat to the inside of the low-temperature check valve to increase the temperature inside the low-temperature check valve, thereby avoiding condensation of residual liquid inside when the check valve is briefly closed, so as to ensure subsequent use of the device and increase the use effect of the device. When the valve body is not closed, the device can drive the friction ring to operate through liquid flow to accumulate heat inside the heat storage frame to achieve energy conversion, further increasing the use effect of the device.

[0009] In a preferred solution, the valve body sealing module also includes a mounting block seat, which is fixedly connected to the inner wall of the check valve body, and the mounting block seat is movably connected with a mounting rod, and a valve connecting rod is fixedly connected to the outer wall of the mounting rod, a valve plate body is arranged on the valve connecting rod, a valve plate nut is arranged on the valve plate body, and two driving gears are fixedly connected to the outer wall of the mounting rod, and two mounting shafts are movably connected to the mounting block seat, one end of the two mounting shafts are fixedly connected with a driven gear, and the two driven gears are respectively meshed with the two driving gears; the other ends of the two mounting shafts are fixedly connected with a connecting plate, and the two connecting plates are fixedly connected with a connecting rod Parts, the outer walls of the two connecting rod parts are movably connected with piston connecting rods, one ends of the two piston connecting rods are movably connected with piston parts, and the inner wall of the check valve body is fixedly connected with two gas storage parts, and the outer walls of the two piston parts are respectively in contact with the inner walls of the two gas storage parts; the two gas storage parts are fixedly connected with connecting pipes, one end of the two connecting pipes is fixedly connected with the same annular pipe, the annular pipe is fixedly connected with multiple connecting pipes, one end of the multiple connecting pipes is fixedly connected with the same sealing airbag, and the sealing airbag is fixedly connected to the outer wall of the valve plate body, the valve plate body is provided with multiple fixed ports, and the outer walls of the multiple connecting pipes are respectively fixedly connected to the inner walls of the multiple fixed ports.

[0010] By providing a valve body sealing module, the valve body sealing module can increase its sealing effect when the valve plate body inside it is closed. During the valve plate closing process, the device can push the gas inside the air chamber to the inside of the sealing airbag through the piston to expand it. When the valve plate body contacts the water inlet, the sealing airbag can increase its sealing effect to avoid liquid leakage and increase the use effect of the device.

[0011] In a preferred scheme, the valve body buffer module also includes a telescopic spring, the telescopic spring is fixedly connected to the inner wall of the buffer sleeve, one end of the telescopic spring is fixedly connected to a resistance plate, the inner wall of the resistance plate is fixedly connected to the outer wall of the buffer rod, the outer wall of the resistance plate contacts the inner wall of the buffer sleeve, and the outer wall of the buffer rod is fixedly connected to a gear kit, the gear kit is located at the outer wall of the buffer sleeve, and one end of the buffer rod is fixedly connected to a connecting cable; the outer wall of the buffer sleeve is fixedly connected to a fixed bracket and a mounting bracket, two guide wheel plates are fixedly connected to the fixed bracket, two guide wheels are arranged on the two guide wheel plates, the outer wall of the connecting cable contacts the inner walls of the two guide wheels, and a connecting shaft rod is movably connected to the mounting bracket, the outer wall of the connecting shaft rod is fixedly connected to a cable reel, one end of the connecting cable is fixedly connected to the inner wall of the cable reel, one end of the connecting shaft rod is fixedly connected to a torsion tooth, the torsion tooth rod is meshed with the gear kit, a torsion spring member is fixedly connected to the connecting shaft rod, and one end of the torsion spring member is fixedly connected to the outer wall of the mounting bracket.

[0012] By providing a valve body buffer module, the valve plate body inside the check valve body will frequently change angle and rotate during operation. At this time, the valve body buffer module can contact the valve plate body to buffer it, thereby avoiding direct contact and collision with the inner wall of the check valve body during use, so as to increase the service life of the device. When buffering, the device can cause the buffer rod and the resistance plate to twist, so as to further consume the impact force transmitted when the valve plate body contacts the buffer rod, thereby increasing the buffering effect of the device and further improving the service life of the device.

[0013] From the above, it can be seen that the low-temperature check valve provided by the present invention has the effect of ensuring the operating state of the low-temperature check valve. When the low-temperature check valve is closed, the device can transfer heat to its interior to increase the temperature inside the low-temperature check valve, thereby avoiding condensation of residual liquid inside when the check valve is briefly closed, so as to ensure the subsequent use of the device and increase the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a low-temperature check valve proposed by the present invention; Figure 2 This is a schematic diagram of the overall side view structure of a low-temperature check valve proposed by the present invention; Figure 3 A schematic cross-sectional structure diagram of a check valve body of a low-temperature check valve proposed by the present invention; Figure 4 This is a schematic structural diagram of a valve body anti-condensation module of a low-temperature check valve proposed by the present invention; Figure 5 This is a schematic diagram of the combined structure of a gear ring and a gear member of a low-temperature check valve proposed by the present invention; Figure 6 This is a schematic diagram of the combined structure of a friction ring and a heat-conducting ring frame of a low-temperature check valve proposed by the present invention; Figure 7 This is a schematic diagram of the combined structure of a buffer sleeve and a port of a low-temperature check valve proposed by the present invention; Figure 8 This is a schematic structural diagram of a valve body sealing module of a low-temperature check valve proposed by the present invention; Fig. 9 The present invention proposes Figure 8 A schematic diagram of some structures; Fig.10 This is a schematic structural diagram of a valve body buffer module of a low-temperature check valve proposed by the present invention.

[0015] In the figure: 1. Check valve body; 2. Fixing bolt; 3. Valve top plate; 4. Valve body buffer module; 401. Fixing bracket; 402. Mounting bracket; 403. Gear kit; 404. Connecting cable; 405. Guide wheel; 406. Torsion gear; 407. Cable reel; 408. Guide wheel plate; 409. Connecting shaft; 410. Torsion spring; 411. Telescopic spring; 412. Resistance plate; 413. Buffering pad sleeve; 414. Buffering rod; 5. Valve body anti-condensation module; 501. Connecting frame; 502. Heat storage sleeve; 503. Driving wheel; 504. Driving shaft; 505. Heat-conducting column; 506. Heat-insulating screw; 507. Adjusting knob; 508. Adjusting rotary seat; 509. Gear ring; 510. Transmission belt; 511. Transmission wheel; 512. Gear Components; 513, heat-conducting ring frame; 514, sealing plate; 515, sealing ring component; 516, heat-conducting hole; 517, outer ring component; 518, friction ring component; 519, rotating shaft; 520, bracket component; 521, linkage wheel; 522, inner ring component; 6, fixing nut; 7, buffer sleeve seat; 8, valve body sealing module; 801, mounting block seat; 802, valve connecting rod; 803, air chamber component; 804, connecting pipe; 805, valve plate nut; 806, annular pipe; 807, valve plate body; 808, connecting pipe; 809, sealing airbag; 810, connecting plate component; 811, connecting rod component; 812, mounting rod component; 813, driving gear; 814, piston component; 815, piston connecting rod; 816, driven gear; 817, mounting shaft; 9, sealing gasket; 10, through port. DETAILED DESCRIPTION

[0016] 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 the embodiments.

[0017] The low-temperature check valve disclosed in the present invention is mainly used in scenarios where some liquid remains inside the check valve after it is closed. Therefore, the remaining liquid is prone to condense in a low-temperature environment, affecting the operation of the check valve when it is temporarily closed.

[0018] Reference Figure 1-Figure 10 A low-temperature check valve comprises a check valve body 1, a valve body anti-condensation module 5 is arranged on the check valve body 1, and a plurality of fixing bolts 2 are arranged on the check valve body 1, the outer walls of the plurality of fixing bolts 2 are provided with the same valve top plate 3, the plurality of fixing bolts 2 are all provided with fixing nuts 6, and a sealing gasket ring 9 is arranged between the valve top plate 3 and the check valve body 1, a valve body sealing module 8 is arranged inside the check valve body 1, and a buffer sleeve seat 7 is fixedly connected to the check valve body 1, and a valve body buffer module 4 is arranged on the buffer sleeve seat 7; The valve body anti-condensation module 5 includes a heat-conducting ring frame 513, which is located below the check valve body 1 and has two heat-conducting holes 516. The valve body sealing module 8 includes a valve connecting rod 802, and the valve connecting rod 802 is located inside the check valve body 1; The valve body buffer module 4 includes a buffer rod 414 . The buffer rod 414 is located inside the buffer sleeve seat 7 , and a buffer cushion sleeve 413 is provided on the buffer rod 414 .

[0019] Specifically, the valve body anti-condensation module 5 can transfer heat to the inside of the check valve body 1 after it is closed, thereby preventing the residual liquid inside from condensing after closing, and further preventing the check valve body 1 from being unable to operate normally due to liquid condensation during short-term closure, thereby increasing the use effect of the device; the valve body sealing module 8 can increase the sealing effect of the check valve body 1 when it is closed, ensure the sealing between the valve plate body 807 and the inner wall of the water inlet, avoid liquid leakage, and meet the sealing requirements of the check valve body 1; the valve body buffer module 4 can buffer the opened valve plate body 807 when in use, so as to avoid the collision between the valve plate body 807 and the inner wall of the check valve body 1, thereby avoiding damage to the device, thereby increasing the service life of the device.

[0020] Reference Figure 1-Figure 6In a preferred embodiment, the valve body anti-condensation module 5 further includes a connecting frame 501, the connecting frame 501 is fixedly connected to the outer wall of the check valve body 1, the bottom of the connecting frame 501 is fixedly connected to the heat storage frame 502, the interior of the connecting frame 501 is connected to the interior of the heat storage frame 502, the heat conduction ring frame 513 is located inside the connecting frame 501 and the heat storage frame 502, the inner walls of the two heat conduction holes 516 are slidably connected to the heat conduction column 505, and the check valve body 1 is provided with a driving shaft 504, the top of the driving shaft 504 The heat storage sleeve frame 502 is fixedly connected with a driving wheel member 503, and the driving wheel member 503 is located inside the check valve body 1; the heat storage sleeve frame 502 is provided with an outer ring member 517, and the outer wall of the outer ring member 517 is fixedly connected with a gear ring 509, and the outer wall of the driving shaft 504 is fixedly connected with a gear member 512, and the gear member 512 is meshed with the gear ring 509, and the outer wall of the heat storage sleeve frame 502 is fixedly connected with a bracket member 520, and the bracket member 520 is connected with a rotating shaft 519 through a bearing, and the outer wall of the rotating shaft 519 is fixedly connected with a linkage wheel 521, and the driving shaft 50 The outer wall of the rotating shaft 519 is fixedly connected to a transmission wheel 511, and the outer walls of the transmission wheel 511 and the linkage wheel 521 are provided with a same transmission belt 510; the outer wall of the rotating shaft 519 is fixedly connected to an inner ring member 522, and the inner ring member 522 is located inside the heat storage sleeve frame 502. The outer wall of the inner ring member 522 and the inner wall of the outer ring member 517 are both provided with friction ring members 518, and the outer walls of the two friction ring members 518 are respectively in contact with the inner wall and the outer wall of the heat conduction ring frame 513, and two adjusting rotary seats 508 are fixedly connected to the connecting frame 501, and the two adjusting rotary seats 508 are both provided with There is a heat-insulating screw rod 506, one end of the two heat-insulating screw rods 506 is respectively connected to one end of the two heat-conducting column members 505, and the other ends of the two heat-insulating screw rods 506 are fixedly connected to the adjusting knobs 507; two through openings 10 are opened on the check valve body 1, the inner walls of the two through openings 10 are fixedly connected to the sealing ring members 515, the outer walls of the two heat-conducting column members 505 are respectively in contact with the inner walls of the two sealing ring members 515, and the other ends of the two heat-conducting column members 505 are fixedly connected to the sealing plates 514, and the two sealing plates 514 are both located inside the check valve body 1.

[0021] Specifically, when the liquid flows, the liquid inside the check valve body 1 drives the driving wheel 503 and the driving shaft 504 to rotate, and then the driving shaft 504 drives the gear 512 and the transmission wheel 511 to rotate. Since the gear 512 is meshed with the gear ring 509, the gear ring 509 can drive the outer ring 517 to rotate. At the same time, since the transmission wheel 511 and the linkage wheel 521 are connected by the transmission belt 510, the inner ring 522 can rotate, and then the outer ring 517 and the inner ring 522 respectively drive the two friction rings 518 to rotate, so that they rub against the outer wall of the heat-conducting ring frame 513 to generate heat. , and heat is stored in the heat storage sleeve frame 502. When the check valve body 1 is closed, the adjusting knob 507 is turned to make the adjusting knob 507 drive the heat insulation screw 506 to rotate, thereby making the heat conductive column 505 go deeper into the check valve. At this time, the heat accumulated by the friction between them will be transferred to the inside of the check valve body 1 through the heat conductive ring frame 513 and the heat conductive column 505 to avoid the residual liquid inside from condensing into a solid state when the check valve is temporarily closed. Before the check valve body 1 is opened, the heat insulation screw 506 drives the heat conductive column 505 to reset, and makes the sealing plate 514 contact with the sealing ring 515 to make it sealed, so as to ensure the operation of the check valve body 1. In a specific application scenario, the valve body anti-condensation module 5 is suitable for the closing link of the low-temperature check valve, that is, the valve body anti-condensation module 5 can ensure the operation status of the low-temperature check valve. When the low-temperature check valve is closed, the device can transfer heat to the inside to increase the temperature inside the low-temperature check valve, thereby avoiding the condensation of residual liquid inside when the check valve is briefly closed, so as to ensure the subsequent use of the device and increase the use effect of the device. When the valve body is not closed, the device can drive the friction ring 518 to operate through liquid flow to accumulate heat inside the heat storage frame 502 to achieve energy conversion, further increasing the use effect of the device.

[0022] Reference Figure 3 , Figure 4 , Figure 7 , Figure 8 and Fig. 9In a preferred embodiment, the valve body sealing module 8 also includes a mounting block seat 801, the mounting block seat 801 is fixedly connected to the inner wall of the check valve body 1, the mounting block seat 801 is connected to a mounting rod 812 through a bearing, the valve connecting rod 802 is fixedly connected to the outer wall of the mounting rod 812, a valve plate body 807 is provided on the valve connecting rod 802, a valve plate nut 805 is provided on the valve plate body 807, the outer wall of the mounting rod 812 is fixedly connected to two driving gears 813, and two mounting shafts 817 are connected to the mounting block seat 801 through a bearing, one end of the two mounting shafts 817 are fixedly connected to a driven gear 816, and the two driven gears 816 are respectively meshed with the two driving gears 813; the other ends of the two mounting shafts 817 are fixedly connected to a connecting plate 810, and the two connecting plate 810 are fixedly connected A connecting rod 811, the outer walls of the two connecting rods 811 are connected to piston connecting rods 815 through bearings, one ends of the two piston connecting rods 815 are rotatably connected to piston members 814, and the inner wall of the check valve body 1 is fixedly connected to two gas chamber members 803, the outer walls of the two piston members 814 are in contact with the inner walls of the two gas chamber members 803 respectively; the two gas chamber members 803 are fixedly connected to connecting pipes 804, one end of the two connecting pipes 804 is fixedly connected to the same annular tube 806, the annular tube 806 is fixedly connected to multiple connecting pipes 808, one end of the multiple connecting pipes 808 is fixedly connected to the same sealing airbag 809, and the sealing airbag 809 is fixedly connected to the outer wall of the valve plate body 807, the valve plate body 807 is provided with multiple fixing ports, the outer walls of the multiple connecting pipes 808 are fixedly connected to the inner walls of the multiple fixing ports respectively.

[0023] Specifically, when the check valve is closed, the valve plate body 807 drives the valve connecting rod 802 and the mounting rod 812 to rotate, and makes the valve plate body 807 contact with the water inlet end of the check valve body 1. During this process, the mounting rod 812 can drive the driving gear 813 to rotate. Since the driving gear 813 is meshed with the driven gear 816, the mounting shaft 817 can drive the connecting plate 810 to rotate, and then the connecting plate 810 drives the connecting rod 811 to rotate, so that the piston connecting rod 815 drives the piston 814 to move inside the gas chamber 803, and then pushes the gas inside the gas chamber 803 to the inside of the connecting pipe 804, and then transports it to the inside of the annular pipe 806 and the connecting pipe 808 through the connecting pipe 804, and then transports the gas to the inside of the sealing airbag 809. The sealing airbag 809 is located in the water inlet area of ​​the check valve body 1, so it can increase the sealing effect of the valve plate body 807 after it expands. In a specific application scenario, the valve body sealing module 8 is suitable for the closing link of the low-temperature check valve, that is, the valve body sealing module 8 can increase its sealing effect when the internal valve plate body 807 is closed. During the closing process of the valve plate, the device can push the gas inside the air chamber to the inside of the sealing airbag 809 through the piston 814 to expand it. When the valve plate body 807 contacts the water inlet, the sealing airbag 809 can increase its sealing effect, avoid liquid leakage, and increase the use effect of the device.

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 7 and Fig.10 In a preferred embodiment, the valve body buffer module 4 further comprises a telescopic spring 411, the telescopic spring 411 is fixedly connected to the inner wall of the buffer sleeve 7, one end of the telescopic spring 411 is fixedly connected to a resistance plate 412, the inner wall of the resistance plate 412 is fixedly connected to the outer wall of the buffer rod 414, the outer wall of the resistance plate 412 is in contact with the inner wall of the buffer sleeve 7, and the outer wall of the buffer rod 414 is fixedly connected to a gear kit 403, the gear kit 403 is located on the outer wall of the buffer sleeve 7, and one end of the buffer rod 414 is fixedly connected to a connecting cable 404; the outer wall of the buffer sleeve 7 is fixedly connected to a fixing bracket 401 and an installation bracket 402, and the fixing bracket 4 01 is fixedly connected with two guide wheel plates 408, two guide wheels 405 are arranged on the two guide wheel plates 408, the outer wall of the connecting cable 404 contacts the inner wall of the two guide wheels 405, and the mounting bracket 402 is connected with a connecting shaft 409 through a bearing, the outer wall of the connecting shaft 409 is fixedly connected with a cable reel 407, one end of the connecting cable 404 is fixedly connected with the inner wall of the cable reel 407, one end of the connecting shaft 409 is fixedly connected with a torsion tooth 406, the torsion tooth 406 is meshed with the gear kit 403, and a torsion spring 410 is fixedly connected to the connecting shaft 409, and one end of the torsion spring 410 is fixedly connected with the outer wall of the mounting bracket 402.

[0025] Specifically, when the check valve is buffering, the valve plate body 807 contacts the buffer pad sleeve 413 on the buffer rod 414 driven by the flow of liquid, further avoiding damage to the device. After contact, the valve plate body 807 transmits the impact force to the buffer rod 414, and compresses the telescopic spring 411. At the same time, the buffer rod 414 pulls the connecting cable 404, so that the connecting cable 404 drives the cable reel 407 and the connecting shaft 409 to rotate, and the torsion spring 410 is deformed, and at the same time, the torsion gear 406 drives the gear kit 403 and the buffer rod 414 to rotate and consume the impact force. Then the torsion spring 410 and the telescopic spring 411 are reset. At this time, the resistance plate 412 and the inner wall of the mounting sleeve have a certain friction resistance, thereby further consuming the impact force to complete the buffering. In a specific application scenario, the valve body buffer module 4 is suitable for the use of the check valve when it is not closed, that is, the valve plate body 807 inside the check valve body 1 will frequently change angle and rotate during operation. At this time, the valve body buffer module 4 can contact the valve plate body 807 to buffer it, thereby avoiding direct contact and collision with the inner wall of the check valve body 1 during use, so as to increase the service life of the device. When buffering, the device can cause the buffer rod 414 and the resistance plate 412 to twist, so as to further consume the impact force transmitted when the valve plate body 807 contacts the buffer rod 414, thereby increasing the buffering effect of the device and further improving the service life of the device.

[0026] Working principle: When the liquid flows, the liquid inside the check valve body 1 drives the driving wheel 503 and the driving shaft 504 to rotate, and then the driving shaft 504 drives the gear 512 and the transmission wheel 511 to rotate. Since the gear 512 is meshed with the gear ring 509, the gear ring 509 can drive the outer ring 517 to rotate. At the same time, since the transmission wheel 511 and the linkage wheel 521 are connected by the transmission belt 510, the inner ring 522 can be rotated, so that the outer ring 517 and the inner ring 522 are separated. The two friction rings 518 are driven to rotate, so that they rub against the outer wall of the heat-conducting ring frame 513 to generate heat, and the heat is stored in the heat storage sleeve frame 502. When the check valve body 1 is closed, the adjusting knob 507 is turned, so that the adjusting knob 507 drives the heat-insulating screw rod 506 to rotate, and then the heat-conducting column 505 is made to go deeper into the check valve. At this time, the heat accumulated by the friction between them will be transferred to the inside of the check valve body 1 through the heat-conducting ring frame 513 and the heat-conducting column 505, so as to avoid the residual liquid inside from condensing into a solid state when the check valve is temporarily closed; When the check valve is closed, the valve plate body 807 drives the valve connecting rod 802 and the installation rod 812 to rotate, and makes the valve plate body 807 contact with the water inlet end of the check valve body 1. During this process, the installation rod 812 can drive the driving gear 813 to rotate. Since the driving gear 813 is meshed with the driven gear 816, the installation shaft 817 can drive the connecting plate 810 to rotate, and then the connecting plate 810 drives the connecting rod 811 to rotate, so that the piston connecting rod 815 drives the piston 814 to move inside the gas chamber 803, and then pushes the gas inside the gas chamber 803 to the inside of the connecting pipe 804, and then transports it to the inside of the annular pipe 806 and the connecting pipe 808 through the connecting pipe 804, and then transports the gas to the inside of the sealing airbag 809. The sealing airbag 809 is located in the water inlet area of ​​the check valve body 1, so it can increase the sealing effect of the valve plate body 807 after it expands; When the check valve is buffering, the valve plate body 807 contacts the buffer pad sleeve 413 on the buffer rod 414 driven by the flow of liquid, further avoiding damage to the device. After contact, the valve plate body 807 transmits the impact force to the buffer rod 414, and compresses the telescopic spring 411. At the same time, the buffer rod 414 pulls the connecting cable 404, so that the connecting cable 404 drives the cable reel 407 and the connecting shaft 409 to rotate, and causes the torsion spring 410 to deform, and at the same time, the torsion tooth member 406 drives the gear kit 403 and the buffer rod 414 to twist and rotate to consume the impact force. After that, the torsion spring member 410 and the telescopic spring 411 are reset. At this time, the resistance plate member 412 and the inner wall of the mounting sleeve have a certain friction resistance, thereby further consuming the impact force to complete the buffering.

[0027] 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 according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A low temperature check valve, comprising a check valve body (1), characterized in that: The check valve body (1) is provided with a valve body anti-condensation module (5), and the check valve body (1) is provided with a plurality of fixing bolts (2), the outer walls of the plurality of fixing bolts (2) are provided with a same valve top plate (3), the plurality of fixing bolts (2) are all provided with fixing nuts (6), and a sealing gasket (9) is provided between the valve top plate (3) and the check valve body (1), a valve body sealing module (8) is provided inside the check valve body (1), and a buffer sleeve (7) is fixedly connected to the check valve body (1), and the buffer sleeve (7) is provided with a valve body buffer module (4); The valve body anti-condensation module (5) comprises a heat-conducting ring frame (513), the heat-conducting ring frame (513) is located below the check valve body (1), and two heat-conducting holes (516) are provided on the heat-conducting ring frame (513); The valve body sealing module (8) comprises a valve connecting rod (802), and the valve connecting rod (802) is located inside the check valve body (1); The valve body buffer module (4) comprises a buffer rod (414), the buffer rod (414) is located inside the buffer sleeve seat (7), and a buffer cushion sleeve (413) is provided on the buffer rod (414).

2. A low temperature check valve according to claim 1, characterized in that: The valve body anti-condensation module (5) further comprises a connecting frame (501), the connecting frame (501) being fixedly connected to the outer wall of the check valve body (1), the bottom of the connecting frame (501) being fixedly connected to a heat storage frame (502), the interior of the connecting frame (501) being connected to the interior of the heat storage frame (502), the heat conduction ring frame (513) being located inside the connecting frame (501) and the heat storage frame (502), the inner walls of the two heat conduction holes (516) being movably connected to heat conduction columns (505), and a driving shaft (504) being provided on the check valve body (1), the top end of the driving shaft (504) being fixedly connected to a driving wheel (503), and the driving wheel (503) being located inside the check valve body (1).

3. A low temperature check valve according to claim 2, characterized in that: An outer ring member (517) is provided inside the heat storage sleeve frame (502); the outer wall of the outer ring member (517) is fixedly connected to a gear ring (509); the outer wall of the driving shaft (504) is fixedly connected to a gear member (512); the gear member (512) meshes with the gear ring (509); the outer wall of the heat storage sleeve frame (502) is fixedly connected to a bracket member (520); a rotating shaft (519) is movably connected to the bracket member (520); the outer wall of the rotating shaft (519) is fixedly connected to a linkage wheel (521); the outer wall of the driving shaft (504) is fixedly connected to a transmission wheel (511); and the outer walls of the transmission wheel (511) and the linkage wheel (521) are provided with the same transmission belt (510).

4. A low temperature check valve according to claim 3, characterized in that: The outer wall of the rotating shaft (519) is fixedly connected to an inner ring member (522), the inner ring member (522) is located inside the heat storage sleeve frame (502), the outer wall of the inner ring member (522) and the inner wall of the outer ring member (517) are both provided with friction ring members (518), the outer walls of the two friction ring members (518) are respectively in contact with the inner wall and the outer wall of the heat-conducting ring frame (513), and two adjusting rotary seats (508) are fixedly connected to the connecting frame member (501), the two adjusting rotary seats (508) are both provided with heat-insulating screw rods (506), one end of the two heat-insulating screw rods (506) is respectively connected to one end of the two heat-conducting column members (505), and the other end of the two heat-insulating screw rods (506) is fixedly connected to an adjusting knob (507).

5. A low temperature check valve according to claim 4, characterized in that: The check valve body (1) is provided with two openings (10), the inner walls of the two openings (10) are fixedly connected to sealing rings (515), the outer walls of the two heat-conducting column members (505) are in contact with the inner walls of the two sealing ring members (515) respectively, and the other ends of the two heat-conducting column members (505) are fixedly connected to sealing plates (514), and the two sealing plates (514) are located inside the check valve body (1).

6. A cryogenic check valve according to claim 1, characterized in that: The valve body sealing module (8) further comprises a mounting block seat (801), the mounting block seat (801) being fixedly connected to the inner wall of the check valve body (1), a mounting rod (812) being movably connected to the mounting block seat (801), a valve connecting rod (802) being fixedly connected to the outer wall of the mounting rod (812), a valve plate body (807) being arranged on the valve connecting rod (802), a valve plate nut (805) being arranged on the valve plate body (807), two driving gears (813) being fixedly connected to the outer wall of the mounting rod (812), and two mounting shafts (817) being movably connected to the mounting block seat (801), one end of each of the two mounting shafts (817) being fixedly connected to a driven gear (816), and the two driven gears (816) being respectively meshed with the two driving gears (813).

7. A low temperature check valve according to claim 6, characterized in that: The other ends of the two mounting shafts (817) are fixedly connected to a connecting plate (810), the two connecting plate members (810) are fixedly connected to a connecting rod member (811), the outer walls of the two connecting rod members (811) are movably connected to a piston connecting rod (815), one end of the two piston connecting rods (815) is movably connected to a piston member (814), and the inner wall of the check valve body (1) is fixedly connected to two gas chamber members (803), and the outer walls of the two piston members (814) are in contact with the inner walls of the two gas chamber members (803), respectively.

8. A low temperature check valve according to claim 7, characterized in that: The two gas chamber components (803) are both fixedly connected with a connecting tube (804), one end of the two connecting tubes (804) is fixedly connected with the same annular tube (806), the annular tube (806) is fixedly connected with a plurality of connecting tubes (808), one end of the plurality of connecting tubes (808) is fixedly connected with the same sealing airbag (809), and the sealing airbag (809) is fixedly connected to the outer wall of the valve plate body (807), the valve plate body (807) is provided with a plurality of fixing openings, and the outer walls of the plurality of connecting tubes (808) are respectively fixedly connected to the inner walls of the plurality of fixing openings.

9. A cryogenic check valve according to claim 1, characterized in that: The valve body buffer module (4) further comprises a telescopic spring (411), the telescopic spring (411) being fixedly connected to the inner wall of the buffer sleeve (7), one end of the telescopic spring (411) being fixedly connected to a resistance plate (412), the inner wall of the resistance plate (412) being fixedly connected to the outer wall of the buffer rod (414), the outer wall of the resistance plate (412) being in contact with the inner wall of the buffer sleeve (7), and the outer wall of the buffer rod (414) being fixedly connected to a gear kit (403), the gear kit (403) being located on the outer wall of the buffer sleeve (7), and one end of the buffer rod (414) being fixedly connected to a connecting cable (404).

10. A cryogenic check valve according to claim 9, characterized in that: The outer wall of the buffer sleeve (7) is fixedly connected to a fixed bracket (401) and a mounting bracket (402); two guide wheel plates (408) are fixedly connected to the fixed bracket (401); two guide wheels (405) are arranged on the two guide wheel plates (408); the outer wall of the connecting cable (404) contacts the inner walls of the two guide wheels (405); and a connecting shaft (409) is movably connected to the mounting bracket (402); the outer wall of the connecting shaft (409) is fixedly connected to a cable reel (407); one end of the connecting cable (404) is fixedly connected to the inner wall of the cable reel (407); one end of the connecting shaft (409) is fixedly connected to a torsion tooth (406); the torsion tooth (406) is meshed with the gear set (403); a torsion spring (410) is fixedly connected to the connecting shaft (409); one end of the torsion spring (410) is fixedly connected to the outer wall of the mounting bracket (402).

Images