Check valve device
By using a buoyancy ball-driven force transmission screw design, a check valve device that automatically opens and closes under low water flow conditions is realized. This solves the problem of traditional check valves being difficult to open in waters with low flow, reduces costs, and improves sensitivity.
Patent Information
- Application Number
- CN202520481738.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-19
AI Technical Summary
Traditional check valves are difficult to open effectively in waters with low flow rates and are also costly, making them unsuitable for projects with large basement raft slab areas.
A check valve device was designed, which uses a buoyancy ball to drive a force transmission screw, and uses the lever principle to make the movable check plate automatically open and close when the water level changes. The device is mainly made of plastic material, including a buoyancy ball, a force transmission screw, a PVC pipe sleeve, a fixed check plate and a movable check plate.
It enables automatic opening and closing under low water flow conditions, improves the sensitivity and reliability of the check valve, reduces costs, and is suitable for waters with low water flow.
Smart Images
Figure CN223740114U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a check valve device. BACKGROUND
[0002] Check valve, also called check valve, one-way valve, non-return valve, is used in fluid pipeline system, relies on fluid flow and is automatically opened and closed, prevents fluid backflow valve.
[0003] For the project of large basement raft area, and the area water level is higher, considering that the basement raft may exist seepage risk, need to increase a drainage layer in the basement, and through the pvc pipe in the drainage layer, the water is drained to the water collecting well, when the water collecting well is not full, the drainage layer can be used, when the water collecting well is full, the pvc pipe of the drainage layer becomes the drain pipe of the water collecting well, in order to prevent water from pouring into the drainage layer, the check valve needs to be arranged in the drain pipe, the traditional lifting type check valve and disc type check valve need large water flow to open, which is not convenient for the use of the project, therefore, a check valve device is provided for the above problems. SUMMARY
[0004] The utility model discloses a check valve device which overcomes the defects of the prior art and is low in cost and suitable for water areas with small water flow.
[0005] To achieve the above object, the utility model provides the following technical scheme: a check valve device, including buoyancy ball, power screw, PVC pipe sleeve, fixed check piece and movable check piece.
[0006] The buoyancy ball is connected to one end of the power screw, the other end of the power screw is movably connected to the fixed check piece and the movable check piece respectively, and the fixed check piece and the movable check piece are arranged in the PVC pipe sleeve.
[0007] Preferably, the fixed check piece comprises a first semicircular plate, a U-shaped plate, two angle plates and a first movable connecting seat.
[0008] The lower end of the first semicircular plate is connected to the U-shaped plate, and the two ends of the U-shaped plate are connected to one of the angle plates respectively.
[0009] Preferably, the movable check piece comprises a second semicircular plate, a straight plate and a second movable connecting seat.
[0010] The straight plate is connected to the upper end of the second semicircular plate, and the second movable connecting seat is connected to the side wall of the second semicircular plate.
[0011] Preferably, the force transmission screw comprises a main rod, a first rotating rod, a second rotating rod and a third rotating rod;
[0012] The left end of the main rod is connected with the first rotating rod, and the first rotating rod is rotationally connected with the buoyancy ball;
[0013] The right end of the main rod is connected with the second rotating rod and the third rotating rod respectively, the second rotating rod is rotationally connected with the first movable connecting seat;
[0014] The third rotating rod is rotationally connected with the second movable connecting seat.
[0015] Preferably, the movable check piece is located between the two angle plates.
[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: the check valve device is driven by the weight of the buoyancy ball to form a lever downwardly to pull up the movable check piece to open, and the opening does not need water flow; the device uses the buoyancy ball, when the buoyancy ball rises, the movable piece will descend with the buoyancy ball, when the water level rises to the bottom of the sleeve pipe, the movable piece has been completely closed, and the check valve is more effective and sensitive than the swing check valve; and compared with the traditional check valve, the device has lower cost and is more suitable for water areas with small water flow, and all of the device is made of plastic material except the force transmission screw, so that the cost is saved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation to the utility model. In the drawings:
[0018] Figure 1 It is a sectional view of the check valve device of the utility model;
[0019] Figure 2 It is a first state schematic view of the check valve device of the utility model;
[0020] Figure 3 It is a second state schematic view of the check valve device of the utility model;
[0021] Figure 4 It is a third state schematic view of the check valve device of the utility model;
[0022] Figure 5 It is a top view of the check valve device of the utility model;
[0023] Figure 6 It is a detail view of the fixed check piece of the utility model;
[0024] Figure 7 It is a detail view of the movable check piece of the utility model;
[0025] Figure 8 is a detail view of the force transmission screw of the utility model;
[0026] Figure 9 is a detail view of the position of the fixed check valve and the movable check valve of the utility model.
[0027] In the figure: 1, buoyancy ball; 2, force transmission screw; 21, main rod; 22, first rotary rod; 23, second rotary rod; 24, third rotary rod; 3, PVC pipe sleeve; 4, fixed check valve; 41, first semicircular plate; 42, U-shaped plate; 43, angle plate; 44, first movable connecting seat; 5, movable check valve; 51, second semicircular plate; 52, straight plate; 53, second movable connecting seat. DETAILED DESCRIPTION
[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0029] Please refer to Figures 1-9 A check valve device, comprising a buoyancy ball 1, a force transmission screw 2, a PVC pipe sleeve 3, a fixed check valve 4 and a movable check valve 5; the buoyancy ball 1 is connected to one end of the force transmission screw 2, the other end of the force transmission screw 2 is movably connected to the fixed check valve 4 and the movable check valve 5 respectively, and the fixed check valve 4 and the movable check valve 5 are arranged in the PVC pipe sleeve 3. The PVC pipe sleeve 3 is internally provided with threads, and is connected to a water pipe through the threads.
[0030] Please refer to Figure 6 The fixed check valve 4 comprises a first semicircular plate 41, a U-shaped plate 42, two angle plates 43 and a first movable connecting seat 44; the lower end of the first semicircular plate 41 is connected to the U-shaped plate 42, and the two ends of the U-shaped plate 42 are respectively connected to one angle plate 43; the lower end of the U-shaped plate 42 is connected to the first movable connecting seat 44. The movable check valve 5 is located between the two angle plates 43.
[0031] Please refer to Figure 7 The movable check valve 5 comprises a second semicircular plate 51, a straight plate 52 and a second movable connecting seat 53; the straight plate 52 is connected to the upper end of the second semicircular plate 51, and the second movable connecting seat 53 is connected to the side wall of the second semicircular plate 51.
[0032] Please refer to Figure 8The force transmission screw 2 comprises a main rod 21, a first rotating rod 22, a second rotating rod 23 and a third rotating rod 24; the left end of the main rod 21 is connected with the first rotating rod 22, the first rotating rod 22 is rotationally connected with the buoyant ball 1; the right end of the main rod 21 is connected with the second rotating rod 23 and the third rotating rod 24 respectively, the second rotating rod 23 is rotationally connected with the first movable connecting seat 44; the third rotating rod 24 is rotationally connected with the second movable connecting seat 53.
[0033] Specifically, the combined surface of the fixed check piece 4 and the movable check piece 5 is arranged below the center line of the PVC sleeve 3. At this time, the diameter of the movable piece is smaller than the diameter of the sleeve, and the movable piece can move up and down.
[0034] As shown in Figure 3 When the water level outside is low, the gravity of the buoyant ball 1 decreases, and the movable check piece 5 is lifted up through the force transmission screw 2 and the second movable connecting seat 53. At this time, the water in the pipe can be normally discharged.
[0035] As shown in Figure 2 When the water level outside is high, the buoyant ball 1 slowly rises, and the movable check piece 5 is pressed down through the force transmission screw 2 and the second movable connecting seat 53. When the water level is flush with the bottom of the PVC sleeve 3, the force transmission screw 2 is just in a horizontal state, and at this time, the fixed check piece 4 and the movable check piece 5 are just closely combined.
[0036] As shown in Figure 4 When the water level continues to rise, the buoyant ball 1 is turned from horizontal to vertical, and the force transmission screw 2 is still in a horizontal state. At this time, the outside water flow is blocked by the movable check piece, and the check device successfully stops the flow. When the water level decreases and is lower than the bottom of the sleeve, the screw will pull up the movable piece, and at this time, the water can be normally discharged.
[0037] The check valve device is driven by the weight of the buoyant ball to pull up the movable check piece 5 through the force transmission screw 2 to form a lever, and can be opened without water flow. Although the traditional swing check valve only needs a small water flow to open, when the water level in the catch basin rises, if the raft is also flowing water to the catch basin at this time, the water level will overflow the bottom of the check valve, and the swing check valve may still backflow. When the water level reaches a certain height, the swing check valve can be completely closed. The device uses a buoyant ball, and when the buoyant ball rises, the movable piece will rise with the buoyant ball. When the water level rises to the bottom of the sleeve, the movable piece has been completely closed, which is more effective and more sensitive than the swing check valve. Moreover, compared with the traditional check valve, the cost is lower, and all the materials except the force transmission screw 2 are plastic materials, which saves cost.
[0038] Finally, it should be noted that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.
Claims
1. A check valve apparatus, characterized by, The utility model provides a kind of floating ball (1), force screw rod (2), PVC pipe sleeve (3), fixed check piece (4) and movable check piece (5) are included; The floating ball (1) is connected in one end of the force screw rod (2), the other end of the force screw rod (2) is movably connected the fixed check piece (4) and the movable check piece (5) respectively, the fixed check piece (4) and the movable check piece (5) are all arranged in the PVC pipe sleeve (3).
2. The check valve apparatus according to claim 1, characterized by The fixed check piece (4) includes first semicircular plate (41), U-shaped plate (42), two gussets (43) and first movable connecting seat (44); The lower end of the first semicircular plate (41) is connected with the U-shaped plate (42), and the two ends of the U-shaped plate (42) are respectively connected with one of the gussets (43); the lower end of the U-shaped plate (42) is connected with the first movable connecting seat (44).
3. The check valve apparatus of claim 2, wherein The movable check piece (5) includes second semicircular plate (51), straight plate (52) and second movable connecting seat (53); The straight plate (52) is connected to the upper end of the second semicircular plate (51), and the second movable connecting seat (53) is connected to the side wall of the second semicircular plate (51).
4. The check valve apparatus according to claim 3, characterized by The force screw rod (2) includes main rod (21), first rotating rod (22), second rotating rod (23) and third rotating rod (24); The left end of the main rod (21) is connected with the first rotating rod (22), and the first rotating rod (22) is rotatably connected with the floating ball (1); The right end of the main rod (21) is respectively connected with the second rotating rod (23) and the third rotating rod (24), and the second rotating rod (23) is rotatably connected with the first movable connecting seat (44); The third rotating rod (24) is rotatably connected with the second movable connecting seat (53).
5. The check valve apparatus of claim 3, wherein The movable check piece (5) is located between the two gussets (43).