Coupled cryogenic vacuum suction valve
Patent Information
- Application Number
- CN202521794483.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-08-22
AI Technical Summary
[0003]本实用新型的的目的在于提供一种能在寒冷、特别是高寒地区室外真空排水系统使用的耦合式低温真空抽吸阀，从而解决现有技术中存在的前述问题
[0012]本实用新型的有益效果是：本实用新型提供的耦合式低温真空抽吸阀，安装在埋置于冻土层下的用户污水收集池上方直径较小的阀井内，阀井为不下人阀井，借用机械耦合装置就可从地面上完成阀门的井下安装与拆除，可大幅降低阀井建设费用及阀门维护费用；本阀门具有的测温及局部加热功能，可在温度低于0℃的情况下，完成阀门的打开与关闭操作，可保证高寒地区低温季节时段的正常抽吸作业。
Smart Images
Figure CN224836228U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vacuum collection of rural sewage, specifically, a vacuum suction valve suitable for use in cold regions. Background Technology
[0002] In existing outdoor vacuum drainage systems, the vacuum suction valves at the user end are all located inside valve wells. This requires personnel to descend into the valve wells to install or maintain the valves. In cold regions, the depth and diameter of the valve wells are relatively large, resulting in high construction costs, a large workload for valve installation and maintenance, and a harsh working environment. In addition, due to the large diameter of the valve wells, in cold regions, cold air easily sinks to the bottom of the well, lowering the temperature inside the well and septic tank, which can easily cause ice to form inside the tank, affecting the fermentation effect of the septic tank. The vacuum suction valves located inside the valve wells are also prone to freezing, thus affecting normal pumping operations. Utility Model Content
[0003] The purpose of this invention is to provide a coupled low-temperature vacuum suction valve that can be used in outdoor vacuum drainage systems in cold, especially high-altitude and frigid regions, thereby solving the aforementioned problems existing in the prior art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A coupled low-temperature vacuum suction valve is installed in a valve well above an underground sewage collection tank. Its outlet is connected to a quick-connect interface on the upper end of a drainage elbow pipe fixed to the tank wall. The valve consists of a valve body, valve plug, valve stem, valve cover, actuator, and coupling connection device. The valve cover is connected to the upper opening of the valve body. The valve stem passes through a guide hole in the valve cover, with its bottom end connected to the valve plug and its upper end connected to the actuator. An actuator bracket is connected to the valve cover. The quick-connect interface at the valve body outlet is connected to the drainage elbow pipe. A locking device is connected to the quick-connect interface or the valve body. An extended handle is connected to the top. The valve body is a hollow circular barrel with an inlet on the side communicating with the interior. The inlet is connected to a suction pipe inserted to the bottom of the sewage collection tank. A valve valve is located at the bottom of the valve body below the inlet. The valve seat is shaped like a flared bell and is integrally formed with the valve body. A downward-facing outlet is connected to the center hole of the flared bell, and a quick-connect interface is connected to the lower end of the outlet. This quick-connect interface mates with the quick-connect interface at the top of the drain elbow. The valve cover is connected to the upper opening of the valve body. The center of the valve cover has a guide hole of a certain length that runs vertically through the valve, and the axis of the guide hole coincides with the axis of the flared bell of the valve seat. The valve plug is located above the valve seat inside the valve body. The valve plug is a frustum-shaped cone, smaller at the top and larger at the bottom. The diameter of the bottom surface is larger than the diameter of the center hole of the flared bell of the valve seat but smaller than the inner diameter of the valve body. The bottom surface has a downward-convex arc surface with a certain curvature, the shape of which matches the shape of the flared bell of the valve seat. The valve stem is a smooth hollow tube or solid... A concentric rod, its outer diameter slightly smaller than the diameter of the guide hole, has its bottom end fixedly connected to the valve plug from the top. The valve rod passes through the guide hole from bottom to top and extends upwards beyond the valve cover by a certain length. The valve rod is slidably connected to the guide hole. The upper end of the valve rod is connected to an actuator fixed to the top surface of the valve cover. The actuator includes a power unit, an execution control unit, and a bracket. The power unit is fixed on the bracket, which is connected to the valve cover from the top surface. The power unit is connected to the execution control unit via a wire. The bracket also includes a sealing cover connected to the valve cover. The execution control unit is fixed on the bracket, the sealing cover, or in a distribution box near the valve. The combination formed by the valve plug and the valve rod moves upwards along the guide hole under the drive of the actuator. The valve plug slides down, and the bottom arc-shaped surface of the valve plug presses against the flared end of the valve seat or moves away from the flared end at a certain distance. The coupling connection device includes a quick-connect interface, a locking device, and an extended handle. The quick-connect interface is connected to the outlet of the valve body from the bottom and cooperates with the quick-connect interface at the upper end of the drain bend pipe. The locking device is connected to the quick-connect interface or to the quick-connect interface through the valve body, and its top end is connected to the lower end of the extended handle. The locking device can tightly fix the valve to the upper end of the drain bend pipe through the quick-connect interface or unlock it from the upper end. An extended rod is connected to the lower end of the extended handle. The bottom end of the extended rod is fixedly connected to the locking device 9 or connected to the locking device through a quick snap. The length of the extended rod is adapted to the depth of the valve well.
[0005] Preferably, the valve plug is made of at least one of the elastic materials, such as nitrile rubber, EPDM rubber, or fluororubber, and at least one heating element and a temperature sensor are provided inside the valve plug.
[0006] Preferably, the locking device includes a quick-connect interface, a guide tube, a lower crossbar, a sliding bar, an upper crossbar, a U-shaped support plate, and a spiral locking component; the quick-connect interface is a chuck-type quick-connect interface, including an upper quick-connect chuck and a lower quick-connect chuck, the upper quick-connect chuck being fixed to the lower end of the valve body outlet, and the lower quick-connect chuck being fixed to the upper opening of the drain elbow pipe. Both have the same outer diameter. A sealing gasket is fixed on the lower surface of the upper chuck or the upper surface of the lower chuck. The lower surface of the quick-release upper chuck presses against the upper surface of the quick-release lower chuck. The guide tube consists of two rigid circular or square rods of the same length arranged in parallel. They are connected to the outlet or valve body from two sides. Their bottom ends are roughly flush with the bottom end of the valve body, and their top ends are higher than the valve actuator. The top ends of the two guide tubes are connected to a horizontally arranged lower crossbar from both ends. The axis of the lower crossbar is perpendicular to the axis of the two guide tubes and is in the same plane as them. The axes of the two guide tubes and the outlet are parallel. The slide rod consists of two rigid rods with the same cross-sectional shape as the guide tube. The diameter of the circular slide rod is slightly smaller than the inner diameter of the circular guide tube, and the outer side length of the square slide rod is slightly smaller than that of the square guide tube. The inner side of the pipe is long, and two sliding rods pass through the inner holes of two guide tubes respectively. The lower ends of the two sliding rods are fixedly connected to the U-shaped support plate from both sides. The U-shaped support plate has a U-shaped opening in the middle. The width of the U-shaped opening is smaller than the outer diameter of the quick-release lower chuck and slightly larger than the outer diameter of the drainage bend pipe. The depth is slightly larger than the sum of the chuck radius and the drainage bend pipe radius. The junction of the U-shaped opening and the U-shaped support plate is set as a flared mouth. The plane where the U-shaped support plate is located is perpendicular to the axis of the two sliding rods. The U-shaped opening is locked at the upper part of the vertical section of the drainage bend pipe, close to the quick-release lower chuck, and the quick-release upper chuck is aligned with the quick-release lower chuck. The upper ends of the two sliding rods are fixed with an upper crossbar. The axis of the upper crossbar is on the same plane as the axis of the two sliding rods and is perpendicular to it. The middle position of the upper crossbar has a through hole.The spiral locking component includes a locking nut and a locking screw. The locking nut is fixed to the upper crossbar from above or below the central hole, or is integral with the upper crossbar, with its center line coinciding with the center line of the central hole. The locking screw passes through the internal thread hole of the locking nut, and its lower end is twistedly connected to the lower crossbar. The twisting connection is achieved through a pin and a U-shaped fork. The U-shaped fork is inverted and positioned at the center of the upper surface of the lower crossbar, with a through hole at the center of its top surface. The pin is disc-shaped and positioned within the U-shaped opening of the U-shaped fork. Its outer diameter is larger than the diameter of the locking screw, the width of the U-shaped opening is larger than the diameter of the pin, and its height is slightly larger than the thickness of the pin. The diameter of the through hole on the top surface of the U-shaped fork is slightly larger than the diameter of the locking screw 35, but smaller than the diameter of the pin. The locking screw passes through the center through hole on the top surface of the U-shaped fork from top to bottom, and its bottom end is fixedly connected to the pin. The vertical axes of the center through hole on the top surface of the U-shaped fork, the pin, and the locking screw coincide. The upper end of the locking screw extends upwards beyond the locking nut to a certain height and is connected to the bottom end of the extended handle. The locking screw and the locking nut are threadedly connected. Rotating the extended handle can drive the assembly consisting of the slide rod, the U-shaped support plate, and the upper crossbar to move up and down relative to the quick-release upper chuck. The U-shaped support plate presses or disengages the quick-release upper chuck and the quick-release lower chuck.
[0007] Preferably, the locking device includes a quick-connect interface, at least one side upright, and a top crossbar or top plate; the quick-connect interface is a tapered thread quick-connect interface, including a tapered thread insert and a tapered thread socket. The tapered thread insert is fixed to the lower end of the valve body outlet, and the tapered thread socket is fixed to the upper end of the drain bend pipe; alternatively, the tapered thread socket is fixed to the lower end of the valve body outlet, and the tapered thread insert is fixed to the upper end of the drain bend pipe. A sealing washer is fixed to the tapered thread insert or the tapered thread socket. The tapered thread insert and the tapered thread... The conical threaded socket is connected by a threaded joint; the side support rod is one or more rigid round or square tubes of the same length arranged in parallel, with its lower end fixedly connected to the outlet or the valve body from the side. The valve body is fixedly connected to the outlet, and its top end extends a certain height above the valve actuator and is connected from the side to a horizontally arranged top crossbar or top plate. The upper surface of the top crossbar or top plate is connected to an extension handle at a position where it intersects the axis of the conical threaded socket or conical threaded joint fixed to the outlet. The vertical axis of the extension handle coincides with the vertical axis of the conical threaded socket or conical threaded joint. Turning the extended handle can tighten the tapered threaded socket or tapered threaded spigot on the outlet into the tapered threaded socket or tapered threaded spigot or tapered threaded spigot fixed to the upper opening of the drain elbow.
[0008] Preferably, the execution control unit is wiredly connected to the power unit, temperature sensor, heating element, and liquid level sensor in the sewage collection tank. The liquid level sensor is fixed on the suction pipe or valve body. The execution control unit of the actuator also includes a remote monitoring module. The remote monitoring module is wiredly connected to the execution control unit or integrated with it. The remote control module is wirelessly connected to the Internet of Things (IoT) monitoring platform and can transmit the detection values of the liquid level sensor in the sewage collection tank and the temperature sensor in the valve to the IoT platform. It can receive instructions from the IoT platform or complete valve opening and closing and valve plug heating according to its own action settings.
[0009] Preferably, the extended handle includes a handle and an extended rod. The handle is fixed to the top of the extended rod, and the length of the extended rod is adapted to the depth of the valve well. The bottom end of the extended rod is connected to the locking device via a quick-release latch or directly to the locking device. The quick-release latch is a female latch seat, which is locked to a male latch head fixed to the top of the locking screw of the locking device. The female latch seat is an inverted cup-shaped shell, the inner diameter of which is slightly larger than the outer diameter of the cylindrical male latch head, and its height is coordinated with the height of the male latch head. T-shaped guide grooves are respectively provided on opposite sides of its lower edge. The lower end of the vertical section of the T-shaped guide groove is open, and the two ends of the upper horizontal section are respectively provided with a right-hand downward locking groove and a left-hand downward locking groove of the same size and recessed. The width and depth of the right-hand downward locking groove and the left-hand downward locking groove are slightly larger than the diameter of the cylindrical pin. A top pressure spring is fixed inside the top of the female latch seat. A horizontally arranged movable pressure plate is fixed to the bottom end of the spring. The center of the top surface of the bayonet female seat is fixedly connected to the bottom end of the extension rod. The bayonet male head includes a male head cylinder and a cylindrical pin. The male head cylinder is arranged vertically and has a horizontal through hole at the top. The axis of the horizontal through hole is on the same plane as the axis of the cylinder and is perpendicular to each other. A cylindrical pin is fixed in the horizontal through hole. The cylindrical pin passes through the horizontal through hole and both ends extend a certain length out of the male head cylinder. The length of the cylindrical pin is consistent with the outer diameter of the bayonet female seat. Alternatively, the quick bayonet is a bayonet male head, which is fixedly connected to the bayonet female seat fixed to the top of the locking screw of the locking device. The bayonet male head is inserted into the bayonet female seat and fixedly connected to the bayonet female seat. The top surface of the male head cylinder presses against the movable pressure plate. The pressure spring is compressed by the movable pressure plate. The cylindrical pin is inserted into the right-hand downward slot or the left-hand downward slot.
[0010] The working principle of this invention is as follows: When the liquid level in the sewage collection tank reaches the set value, the liquid level sensor transmits a signal to the execution control unit. The execution control unit then sends / does not send the signal to the IoT platform. The actuator, either automatically or by receiving instructions from the IoT platform, drives the valve stem to move the valve plug upward along the guide hole, causing the arc-shaped surface of the valve plug to disengage from the valve seat flare, forming a passage. At this time, the vacuum system draws sewage from the sewage collection tank into the valve housing through the suction pipe (connected to the water inlet on the side of the valve body), and discharges it through the valve seat central hole, water outlet, and drain bend. When closed, the actuator drives the valve plug downward, and the arc-shaped surface of the valve plug, made of elastic material (such as nitrile rubber), fits tightly against the valve seat flare, using the curvature of the flare and the elasticity of the material to achieve a seal and prevent leakage. In low-temperature environments, before the valve is opened, the temperature sensor monitors the valve plug temperature. If it is below the threshold, the execution control unit activates the built-in heating element to melt the ice film between the arc-shaped surface of the valve plug and the valve seat flare, preventing the valve plug from freezing and affecting normal drainage.
[0011] The coupling connection between the valve and the drainage bend is achieved through a locking device: for the chuck type, rotating the extended handle drives the spiral locking component to move the U-shaped support plate upward, pressing the upper and lower quick-release chucks together (the sealing gasket ensures a seal); for the tapered thread type, rotating the extended handle tightens the tapered thread interface. The extended handle adapts to the depth of the valve well. On the ground, align the female bayonet at the lower end of the extended handle with the male bayonet fixed on the drainage bend and press it down. The male bayonet is inserted into the extended handle, and the top surface of the cylindrical part of the male bayonet presses against the movable pressure plate. The pressure spring is compressed by the movable pressure plate. By rotating the extended handle left and right at a certain angle, the cylindrical pin is engaged in the lower slot under the pressure of the pressure spring. Then, the torque of the extended handle is transmitted to the locking device, which can be operated on the ground to complete the underground installation and removal of the valve. The execution control unit integrates liquid level and temperature signals and wirelessly connects to the Internet of Things platform through the remote monitoring module. It can remotely control the valve opening and closing and heating, or automatically operate according to preset logic to achieve intelligent management.
[0012] The beneficial effects of this utility model are as follows: The coupled low-temperature vacuum suction valve provided by this utility model is installed in a small-diameter valve well above the user's sewage collection tank buried under the permafrost layer. The valve well is a non-man-accessible valve well, and the valve can be installed and removed from the ground using a mechanical coupling device, which can significantly reduce the construction cost of the valve well and the maintenance cost of the valve. The valve has temperature measurement and local heating functions, which can complete the opening and closing operation of the valve when the temperature is below 0℃, ensuring normal suction operation during the low-temperature season in high-altitude and cold regions. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the installation of a coupled cryogenic vacuum suction valve; Figure 2 This is a schematic diagram of a low-temperature vacuum suction valve. Figure 3 This is a schematic diagram of the valve plug structure; Figure 4 This is a schematic diagram of the chuck quick-release interface coupling connection device.
[0014] Figure 5 This is a schematic diagram of a U-shaped tray structure.
[0015] Figure 6 This is a schematic diagram of the structure of a tapered thread quick-connect interface coupling connection device.
[0016] Figure 7 This is a schematic diagram of the extended handle and quick-lock mechanism. Figure 8 This is a schematic diagram of the bayonet female seat structure. Figure 9 This is a diagram illustrating the locking connection and positioning of the female and male bayonet connectors. In the diagram: 1. Low-temperature vacuum suction valve; 2. Valve body; 3. Valve plug; 4. Valve stem; 5. Valve cover; 6. Actuator; 7. Coupling connection device; 8. Quick-connect interface; 9. Locking device; 10. Extended handle; 11. Sewage collection tank; 12. Valve well; 13. Suction pipe; 14. Drainage bend pipe; 15. Service pipe; 16. Liquid level in the tank; 17. Ground; 18. Inlet; 19. Valve seat; 20. Outlet; 21. Power unit; 22. Actuation control unit; 23. Bracket; 24. Guide hole; 25. Quick-connect upper chuck; 26. Quick-connect lower chuck; 27. Guide tube; 28. Lower crossbar; 29. Slide bar; 30. Upper crossbar; 31. U-shaped support plate; 32. Spiral locking component; 33. U-shaped opening; 34. Locking nut; 35. Locking screw; 37. Torque connector; 38. Pin head; 39. U-shaped fork; 40. Sealing gasket; 41. Fixing component; 42. Quick-release bayonet; 43. Side upright; 44. Top crossbar; 45. Tapered thread socket; 46. Tapered thread socket; 47. Liquid level sensor; 48. Metal disc; 49. Temperature sensor; 50. Heating element; 51. Pressure plate; 52. Signal line; 53. Control line; 54. Power connector; 55. Handle; 56. Extension rod; 57. Bayonet female; 58. Bayonet male; 59. Sealing cover; 60. T-shaped guide groove; 61. Right-hand lower slot; 62. Left-hand lower slot; 63. Movable pressure plate; 64. Top pressure spring; 65. Columnar pin. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0018] like Figures 1 to 5As shown, in this embodiment, a coupled low-temperature vacuum suction valve is installed in a valve well 12 above an underground sewage collection tank 11. Its outlet 20 is connected to the upper opening of a drainage bend pipe 14 fixed on the wall of the sewage collection tank. The upper opening of the drainage bend pipe is provided with a quick-connect interface 8. The valve valve is characterized by being composed of a valve body 2, a valve plug 3, a valve stem 4, a valve cover 5, an actuator 6, and a coupling connection device 7. The valve cover 5 is connected to the upper opening of the valve body 2. The valve stem 4 passes through the valve cover guide hole 24, with the bottom end connected to the valve plug 3 and the upper end connected to the actuator 6. The actuator bracket 23 is connected to the valve cover. The quick-connect interface 8 at the outlet of the valve body is connected to the drainage bend pipe 14. The locking device 9 is connected to the quick-connect interface 8 or the valve body 2. The top end is connected to an extended handle 10.The valve housing 2 is a hollow circular barrel with an inlet 18 on its side that communicates with the interior. The inlet is connected to a suction pipe 13 inserted into the bottom of the sewage collection tank 11. A valve seat 19 is located at the bottom of the valve housing below the inlet. The valve seat is a flared shape with a certain curvature and is integrally formed with the valve housing 2. A vertically downward outlet 20 is connected to the center hole of the flared opening. A quick-connect interface is connected to the lower end of the outlet, and this quick-connect interface mates with the quick-connect interface at the upper end of the drain bend pipe 14. The valve cover 5 is connected to the upper end of the valve housing 2. The center of the valve cover has a guide hole 24 that runs vertically through the valve housing for a certain length. The axis of the guide hole coincides with the axis of the flared opening of the valve seat. The valve plug 3 is... The valve plug, positioned above the valve seat 19 inside the valve housing, is a frustum-shaped cylinder, smaller at the top and larger at the bottom. Its bottom diameter is larger than the diameter of the central hole in the valve seat's flared opening but smaller than the inner diameter of the valve housing. The bottom surface has a downwardly convex arc surface, the shape of which matches the shape of the flared opening of the valve seat 19. The valve stem 4 is a smooth hollow tube or solid round rod, its outer diameter slightly smaller than the diameter of the guide hole 24. The bottom end of the valve stem is fixedly connected to the valve plug 3 from the top. The valve stem passes through the guide hole from bottom to top and extends upwards beyond the valve cover 5 by a certain length. The valve stem is slidably connected to the guide hole. The upper end of the valve stem is connected to the actuator 6 fixed to the top surface of the valve cover. The actuator includes a power unit 21, an execution control unit 22, and a bracket 23. The power unit is fixed on a bracket, which is connected to the valve cover 5 from the top. The bracket also includes a sealing cover 59, which is connected to the valve cover 5. The power unit 21 is an electric push rod, which is connected to the top of the valve stem and to the execution control unit 22 via a wire. The execution control unit is fixed on the bracket, or in another part of the actuator, or in a distribution box near the valve. The combination formed by the valve plug and the valve stem slides up and down along the guide hole 24 under the drive of the actuator. The bottom arc-shaped surface of the valve plug presses against the flared opening of the valve seat or moves away from the flared opening at a certain distance. The coupling connection device 7 includes a quick-connect interface 8, a locking device 9, and an extension handle 10. The quick-connect interface is a quick-connect upper chuck 25, which is connected to the outlet 20 of the valve body from the bottom and cooperates with the quick-connect lower chuck 26 of the quick-connect interface at the upper opening of the drain bend pipe 14. The locking device 9 is connected to the valve body 2, and its top end is connected to the lower end of the extension handle 10. The locking device can tightly fix the valve to the upper opening of the drain bend pipe 14 or unlock it from the upper opening through the quick-connect upper chuck 25 and quick-connect lower chuck 26 of the quick-connect interface. The top end of the extension handle is a handle 55, and an extension rod 56 is connected to the bottom of the handle. The bottom end of the extension rod is fixedly connected to the locking device 9 or connected to the locking device through a quick snap. The length of the extension rod is adapted to the depth of the valve well.
[0019] like Figure 3The valve plug 3 is made of elastic materials such as nitrile rubber, EPDM rubber, or fluororubber. The valve stem 4 is a hollow round tube that extends to the head of the valve plug. A metal disc 48 is fixed at the lower end. The metal disc is made of brass. A heating element 50 and a temperature sensor 49 are installed inside the valve plug. The heating element and the temperature sensor are fixed on the metal disc 48 and are connected to the execution control unit 22 through control line 53 and signal line 52, respectively.
[0020] like Figure 4 , Figure 5The locking device includes a quick-connect interface 8, a guide tube 27, a lower crossbar 28, a slide bar 29, an upper crossbar 30, a U-shaped support plate 31, and a spiral locking component 32. The quick-connect interface is a chuck-type quick-connect interface, including an upper quick-connect chuck 25 and a lower quick-connect chuck 26. The upper quick-connect chuck is fixed to the lower end of the outlet 20 of the valve body, and the lower quick-connect chuck is fixed to the upper opening of the drain bend 14. Both have the same outer diameter. A sealing gasket 40 is fixed on the lower surface of the upper chuck or the upper surface of the lower chuck. The lower surface of the quick-release upper chuck presses against the upper surface of the quick-release lower chuck. The guide tube 27 consists of two rigid round tubes or square rods of the same length arranged in parallel. They are connected to the outlet or valve body from two sides. Their bottom ends are roughly flush with the bottom end of the valve body 2, and their top ends are higher than the valve actuator. The top ends of the two guide tubes are connected to the horizontally arranged lower crossbar 28 from both ends. The axis of the lower crossbar is perpendicular to the axis of the two guide tubes 27 and is on the same plane as them. The axes of the two guide tubes 27 and the outlet 20 are parallel. The slide rod 29 consists of two rigid rods with the same cross-sectional shape as the guide tubes. The diameter of the round slide rod is slightly smaller than the inner diameter of the round guide tube 27, and the outer side length of the square slide rod is slightly smaller than that of the square guide tube 27. The inner side length of the pipe is such that two sliding rods 27 pass through the inner holes of two guide pipes 27 respectively. The lower ends of the two sliding rods are fixedly connected to the U-shaped support plate 31 from both sides. The U-shaped support plate has a U-shaped opening 33 in the middle. The width of the U-shaped opening is smaller than the outer diameter of the quick-release lower chuck 26 and slightly larger than the outer diameter of the drainage bend pipe. The depth is slightly larger than the sum of the chuck radius and the drainage bend pipe radius. The junction of the U-shaped opening and the U-shaped support plate is set as a flared mouth. The plane where the U-shaped support plate is located is perpendicular to the axis of the two sliding rods. The U-shaped opening is locked at the upper part of the vertical section of the drainage bend pipe, close to the quick-release lower chuck, and the quick-release upper chuck 25 is aligned with the quick-release lower chuck 26. The upper ends of the two sliding rods 29 are fixed with an upper crossbar 30. The axis of the upper crossbar is on the same plane as the axis of the two sliding rods and is perpendicular to it. The middle position of the upper crossbar has a through hole.The spiral locking component 32 includes a locking nut 34 and a locking screw 35. The locking nut 34 is fixed to the upper crossbar 30 from above or below the central hole, or is integrated with the upper crossbar, with its center line coinciding with the center line of the central hole. The locking screw 35 passes through the inner thread hole of the locking nut 34, and its lower end is twistedly connected to the lower crossbar 28. The twisting connection is achieved by a pin head 38 and a U-shaped fork 39. The U-shaped fork 39 is inverted and placed at the center of the upper surface of the lower crossbar 28, with a through hole at the center of its top surface. The pin head 38 is disc-shaped and is set in the U-shaped opening of the U-shaped fork 39. Its outer diameter is larger than the diameter of the locking screw, the width of the U-shaped opening is larger than the diameter of the pin head 38, and its height is slightly larger than the thickness of the pin head. The diameter of the through hole on the top surface of the U-shaped fork 39 is slightly larger than the locking screw. The diameter of the locking screw 35 is smaller than the diameter of the pin 38. The locking screw 35 passes through the center through hole on the top surface of the U-shaped fork 39 from top to bottom, and its bottom end is fixedly connected to the pin 38. The vertical axes of the center through hole on the top surface of the U-shaped fork 39, the pin 38, and the locking screw 35 coincide. The upper end of the locking screw 35 extends upwards beyond the locking nut 34 to a certain height and is connected to the bottom end of the extended handle 10. The locking screw 35 and the locking nut 34 are threadedly connected. The locking screw and the locking nut use self-locking threads. Rotating the extended handle 10 can drive the assembly consisting of the slide bar 29, the U-shaped support plate 31, and the upper crossbar 30 to move up and down relative to the quick-release upper chuck 25. The U-shaped support plate 31 presses or disengages the quick-release upper chuck 25 and the quick-release lower chuck 26.
[0021] like Figure 6 As shown, the locking device includes a quick-connect interface 8 and at least one side upright ( Figure 6The valve body consists of two side uprights 43 and a top crossbar 44 or a top plate. The quick-connect interface is a tapered thread quick-connect interface, including a tapered thread insert 45 and a tapered thread socket 46. The tapered thread insert is fixed to the lower end of the valve body outlet 20, and the tapered thread socket is fixed to the upper end of the drain bend 14. Alternatively, the tapered thread socket 46 is fixed to the valve body outlet 20, and the tapered thread insert 45 is fixed to the upper end of the drain bend 14. A sealing gasket is fixed to the tapered thread insert or the tapered thread socket, and the tapered thread insert and the tapered thread socket are threaded together. The side uprights are one or more rigid round or square rods of the same length arranged in parallel, fixedly connected to the outlet from the side or fixedly connected to the valve body (the valve body is also fixed to the outlet). (Connected), the top end is higher than the valve actuator by a certain height, and the top end is connected to the horizontally arranged top crossbar 44 or top plate from the side. The upper surface of the top crossbar or top plate is connected to the extended handle at the position where it intersects with the axis of the tapered threaded socket or tapered threaded socket fixed at the outlet. Rotating the extended handle can drive the tapered threaded socket or tapered threaded socket on the outlet to tighten onto the tapered threaded socket or tapered threaded socket fixed at the upper end of the drain bend pipe, or loosen the two. In this case, the suction pipe 13 connected to the inlet 18 of the low temperature vacuum suction valve 1 is a flexible hose. When installing and removing the valve, the lower end of the suction pipe needs to be pulled up from the sewage collection tank 11 and rotated left and right with the extended handle 10. After the operation is completed, the suction pipe is put back into the sewage collection tank 11.
[0022] like Figure 2 The execution control unit 22 is wiredly connected to the power unit 21, the temperature sensor 49, the heating element 50, and the liquid level sensor 47 in the sewage collection tank 11. The liquid level sensor 47 is fixed on the suction pipe 13 or the valve body 2. The execution control unit 22 of the actuator 6 also includes a remote monitoring module. The remote monitoring module is wiredly connected to the execution control unit or integrated with it. The remote control module is wirelessly connected to the Internet of Things (IoT) monitoring platform and can transmit the detection values of the liquid level sensor in the sewage collection tank and the temperature sensor in the valve to the IoT platform. It can receive instructions from the IoT platform or complete valve opening and closing and valve plug heating according to its own action settings.
[0023] like Figure 1 , Figure 4 , Figure 7 , Figure 8 , Figure 9As shown, the extended handle 10 includes a handle 55 and an extended rod 56. The handle is fixed to the top of the extended rod, and the length of the extended rod is adapted to the depth of the valve well 12. The bottom end of the extended rod is connected to the locking device 9 via a quick-release latch 42 or is directly fixed to the locking device. The quick-release latch is a latch female 57, which is locked to the latch male 58 fixed to the top of the locking screw of the locking device. The latch female 57 is an inverted cup-shaped shell with an inner diameter slightly larger than 100 mm. The outer diameter of the cylindrical male connector 58 is coordinated with the height of the male connector. T-shaped guide grooves 60 are respectively provided on opposite sides of its lower edge. The lower end of the vertical section of the T-shaped guide groove is open, and the two ends of the upper horizontal section are respectively provided with a right-handed downward locking groove 61 and a left-handed downward locking groove 62 of the same size and recessed. The width and depth of the right-handed and left-handed downward locking grooves are slightly larger than the diameter of the cylindrical pin 65. A top-pressure spring 64 is fixed inside the top of the female connector 57. A horizontally arranged movable pressure plate 63 is fixed to the bottom end of the spring. The center of the top surface of the bayonet female seat is fixedly connected to the bottom end of the extension rod 56. The bayonet male head includes a male head cylinder 58 and a cylindrical pin 65. The male head cylinder is arranged vertically and has a horizontal through hole at the top. The axis of the horizontal through hole is on the same plane as the axis of the cylinder and is perpendicular to each other. The cylindrical pin 65 is fixed in the horizontal through hole, passes through the horizontal through hole, and both ends protrude a certain distance from the male head cylinder. The length of the cylindrical pin is consistent with the outer diameter of the bayonet female seat, or the quick-lock is a bayonet male head 58, which is fixedly connected to the bayonet female seat 57 fixed to the top of the locking screw of the locking device; the bayonet male head is inserted into the bayonet female seat 57 and fixedly connected to the bayonet female seat, the top surface of the male head cylinder 58 abuts against the movable pressure plate 63, the pressure spring 64 is compressed by the movable pressure plate 63, and the cylindrical pin 65 is inserted into the right-hand lower locking groove 61 or the left-hand lower locking groove 62.
[0024] By adopting the above-disclosed technical solution of this utility model, the following beneficial effects are obtained: The coupling-type low-temperature vacuum suction valve provided by this utility model is installed in a small-diameter valve well above a user's sewage collection tank buried under the permafrost layer. The valve well is a non-accessible valve well, and the valve can be installed and removed from the ground using a mechanical coupling device, which can significantly reduce the construction cost of the valve well and the valve maintenance cost. The valve has temperature measurement and local heating functions, which can complete the opening and closing operation of the valve when the temperature is below 0℃, ensuring normal suction operation during the low-temperature season in high-altitude and cold regions.
[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A coupled low-temperature vacuum suction valve, installed in a valve well above an underground sewage collection tank, wherein its outlet is connected to a quick-connect interface at the upper end of a drainage elbow pipe fixed to the wall of the sewage collection tank, characterized in that: The valve consists of a valve body, valve plug, valve stem, valve cover, actuator, and coupling connection device. The valve cover connects to the upper opening of the valve body. The valve stem passes through the guide hole of the valve cover, with the bottom end connected to the valve plug and the upper end connected to the actuator. The actuator bracket connects to the valve cover. The quick-connect interface of the valve body outlet connects to the drain elbow pipe. The locking device connects to the quick-connect interface or the valve body. The top end connects to an extension handle. The valve body is a hollow circular barrel with an inlet on the side that communicates with the interior. The inlet is connected to a suction pipe inserted into the bottom of the sewage collection tank. Below the inlet, the bottom of the valve body has a valve seat. The valve seat is shaped like a flared mouth with a certain arc and is integrated with the valve body. A downward-facing outlet is connected to the center hole of the flared mouth. The lower opening of the outlet is connected to a quick-connect interface, which mates with the quick-connect interface at the upper opening of the drain elbow. The valve cover is connected to the upper opening of the valve body, and the center of the valve cover has a guide hole of a certain length that runs vertically through it. The axis of the guide hole coincides with the axis of the valve seat flare. The valve plug is located above the valve seat inside the valve body. The valve plug is a frustum shape, smaller at the top and larger at the bottom. The diameter of the bottom surface is larger than the diameter of the central hole in the valve seat flare, but smaller than the inner diameter of the valve body. The bottom surface has an arc-shaped surface that bulges downwards with a certain curvature. The shape of the arc-shaped surface matches the shape of the valve seat flare. The valve stem is a smooth hollow tube or a solid round rod, and its outer diameter is slightly smaller than the diameter of the guide hole. The bottom end of the valve stem is fixedly connected to the valve plug from the top. The valve stem passes through the guide hole from bottom to top and extends upwards beyond the valve cover by a certain length. The valve stem is slidably connected to the guide hole. The upper end of the valve stem is connected to the actuator fixed on the top surface of the valve cover. The actuator includes a power unit, an execution control unit, and a bracket. The power unit is fixed on the bracket, and the bracket is connected to the valve cover from the top surface. The power unit is connected to the execution control unit via a wire. The execution control unit is fixed on the bracket or in another location of the actuator or in a distribution box near the valve. The combination formed by the valve plug and the valve stem slides up and down along the guide hole under the action of the actuator. The bottom arc-shaped surface of the valve plug presses against the flared opening of the valve seat. The valve is positioned at a certain distance from the flared opening. The coupling connection device includes a quick-connect interface, a locking device, and an extended handle. The quick-connect interface is connected to the outlet of the valve body from the bottom and mates with the quick-connect interface at the top of the drain bend. The locking device is connected to the quick-connect interface or to the quick-connect interface through the valve body, and its top end is connected to the bottom end of the extended handle. The locking device can securely fix the valve to the top of the drain bend or unlock it from the top through the quick-connect interface. An extended rod is connected to the bottom of the extended handle. The bottom end of the extended rod is fixedly connected to the locking device or connected to the locking device through a quick snap. The length of the extended rod is adapted to the depth of the valve well.
2. The coupled cryogenic vacuum suction valve according to claim 1, characterized in that: At least one heating element and a temperature sensor are installed inside the valve plug.
3. The coupled cryogenic vacuum suction valve according to claim 1, characterized in that: The locking device includes a quick-connect interface, guide tubes, a lower crossbar, a sliding bar, an upper crossbar, a U-shaped support plate, and a spiral locking component. The quick-connect interface is a chuck-type quick-connect interface, including an upper quick-connect chuck and a lower quick-connect chuck. The upper quick-connect chuck is fixed to the lower end of the valve body outlet, and the lower quick-connect chuck is fixed to the upper opening of the drain bend. Both have the same outer diameter. A sealing gasket is fixed to the lower surface of the upper chuck or the upper surface of the lower chuck, and the lower surface of the upper quick-connect chuck presses against the upper surface of the lower quick-connect chuck. The guide tube consists of two rigid round or square tubes of the same length arranged in parallel, connected to the outlet or valve body from two sides. Their bottom ends are approximately flush with the bottom end of the valve body, and their top ends are higher than the valve actuator by a certain height. The top ends of the two guide tubes are respectively connected to the horizontally arranged lower crossbar from both ends. The axis of the lower crossbar is perpendicular to the axis of the two guide tubes and is parallel to them. On a single plane, the axes of the two guide tubes and the outlet are parallel. The sliding rods are two rigid rods with cross-sectional shapes consistent with the guide tubes. The diameter of the circular sliding rod is slightly smaller than the inner diameter of the circular guide tube, and the outer side length of the square sliding rod is slightly smaller than the inner side length of the square guide tube. The two sliding rods pass through the inner holes of the two guide tubes respectively. The lower ends of the two sliding rods are fixedly connected to the U-shaped support plate from both sides. The U-shaped support plate has a U-shaped opening in the middle. The width of the U-shaped opening is smaller than the outer diameter of the quick-release chuck, slightly larger than the outer diameter of the drain bend, and the depth is slightly larger than the radius of the chuck. The sum of the radii of the drainage bend connecting pipes, the junction of the U-shaped opening and the U-shaped support plate is set in a trumpet shape, the plane of the U-shaped support plate is perpendicular to the axis of the two sliding rods, the U-shaped opening is locked at the upper part of the vertical section of the drainage bend connecting pipe close to the quick-release lower chuck, and the quick-release upper chuck is aligned with the quick-release lower chuck, the upper end of the two sliding rods is fixed with an upper crossbar, the axis of the upper crossbar is on the same plane as the axis of the two sliding rods and perpendicular to it, the middle position of the upper crossbar is provided with a through hole; the spiral locking component includes a locking nut and a locking screw, the locking nut The locking screw is fixed to the upper crossbar from above or below the central hole, or is integrated with the upper crossbar. Its center line coincides with the center line of the central hole. The locking screw passes through the internal thread hole of the locking nut. Its lower end is twistedly connected to the lower crossbar, and its upper end extends upward to a certain height from the locking nut and is connected to the bottom end of the extension handle. The locking screw is threadedly connected to the locking nut. Rotating the extension handle can drive the combination of the slide bar, U-shaped support plate and upper crossbar to move up and down relative to the quick-release upper chuck. The U-shaped support plate presses the quick-release upper chuck and quick-release lower chuck together or separates them.
4. The coupled cryogenic vacuum suction valve according to claim 1, characterized in that: The locking device includes a quick-connect interface, at least one side upright, and a top crossbar or top plate; the quick-connect interface is a tapered thread quick-connect interface, including a tapered thread insert and a tapered thread socket. The tapered thread insert is fixed to the lower end of the valve body outlet, and the tapered thread socket is fixed to the upper end of the drain bend pipe; alternatively, the tapered thread socket is fixed to the lower end of the valve body outlet, and the tapered thread insert is fixed to the upper end of the drain bend pipe. A sealing washer is fixed to the tapered thread insert or the tapered thread socket, and the tapered thread insert and the tapered thread socket are threadedly connected; the side upright is one or more rigid rods of the same length arranged in parallel. A round or square tube is fixedly connected to the outlet or valve body from the side at its lower end. The valve body is also fixedly connected to the outlet. The top end is higher than the valve actuator by a certain height. The top end is connected to a horizontally arranged top crossbar or top plate from the side. The upper surface of the top crossbar or top plate is connected to an extension handle at the position where it intersects with the axis of the tapered threaded socket or tapered threaded socket fixed at the outlet. The vertical axis of the extension handle coincides with the vertical axis of the tapered threaded socket or tapered threaded socket. Rotating the extension handle can drive the tapered threaded socket or tapered threaded socket on the outlet to be tightened onto the tapered threaded socket or tapered threaded socket fixed at the upper end of the drain bend pipe.
5. The coupled cryogenic vacuum suction valve according to claim 1, characterized in that: The execution control unit is wired to the power unit, temperature sensor, heating element, and liquid level sensor in the sewage collection tank. The execution control unit of the actuator also includes a remote monitoring module, which is wired to or integrated with the execution control unit. It also includes a remote control module, which is wirelessly connected to the Internet of Things (IoT) monitoring platform. The remote control module can transmit the detection values of the liquid level sensor in the sewage collection tank and the temperature sensor in the valve to the IoT platform. It can receive instructions from the IoT platform or complete valve opening and closing and valve plug heating according to its own action settings.
6. The coupled cryogenic vacuum suction valve according to claim 1, characterized in that: The extended handle includes a handle and an extended rod. The handle is fixed to the top of the extended rod. The length of the extended rod is adapted to the depth of the valve well. The bottom end of the extended rod is connected to the locking device via a quick-release latch or directly to the locking device. The quick-release latch is a female latch seat, which is locked to a male latch head fixed to the top of the locking screw of the locking device. The female latch seat is an inverted cup-shaped shell with an inner diameter slightly larger than the outer diameter of the cylindrical male latch head. Its height is coordinated with the height of the male latch head. T-shaped guide grooves are respectively provided on opposite sides of its lower edge. The lower end of the vertical section of the T-shaped guide groove is open, and the two ends of the upper horizontal section are respectively provided with a right-hand downward locking groove and a left-hand downward locking groove of the same size and recessed. The width and depth of the right-hand downward locking groove and the left-hand downward locking groove are slightly larger than the diameter of the cylindrical pin. A top pressure spring is fixed to the top of the female latch seat, and a horizontally arranged movable pressure plate is fixed to the bottom of the top pressure spring. The center of the top surface of the female seat is fixedly connected to the bottom end of the extension rod; the male head includes a male cylinder and a cylindrical pin. The male cylinder is arranged vertically and has a horizontal through hole at the top. The axis of the horizontal through hole is on the same plane as the axis of the cylinder and is perpendicular to each other. A cylindrical pin is fixed in the horizontal through hole. The cylindrical pin passes through the horizontal through hole and both ends extend a certain length out of the male cylinder. The length of the cylindrical pin is consistent with the outer diameter of the female seat. Alternatively, the quick-lock is a male head that is locked and connected to the female seat fixed to the top of the locking screw of the locking device. The male head is inserted into the female seat and rotated left and right at a certain angle before being locked and connected to the female seat. The top surface of the male cylinder presses against the movable pressure plate. The pressure spring is compressed by the movable pressure plate. The cylindrical pin is locked into the right-hand or left-hand slot under the pressure of the pressure spring. The torque of the extension handle is transmitted to the locking device.