Tubular membrane check valve device
By designing a check valve device suitable for tubular membranes, using CPVC material and a rotating shaft groove structure, the problem of poor sealing performance of existing check valve devices in high temperature and corrosive environments is solved, achieving low opening pressure and back pressure prevention, and extending the service life of tubular membranes.
Patent Information
- Application Number
- CN202422781061.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The market currently lacks suitable check valve devices that are resistant to high temperatures and corrosion, small in size, and have good back pressure sealing for tubular membrane permeate pipelines, which leads to back pressure damage at the permeate outlet of the tubular membrane and reduces its service life.
A tubular membrane check valve device was designed, including components such as an inlet valve body, an outlet valve body, fasteners, a valve seat, a valve seat gasket, a valve core, a rotating shaft, a slot, and a counterweight. It is made of CPVC material. The valve core is equipped with a rotating shaft and a slot at its end. Combined with a spring and rope structure, it achieves low opening pressure and good back pressure sealing.
It achieves effective sealing of small check valves in high temperature and corrosive environments, prevents back pressure damage, and extends the service life of tubular diaphragms.
Smart Images
Figure CN223498795U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of membrane separation in water treatment, and specifically relates to a tubular membrane check valve device. Background Technology
[0002] Tubular membranes have a molecular weight cutoff between 10nm and 200nm, and can effectively intercept suspended solids, bacteria, large molecular proteins, pectin and other substances. They have strong anti-fouling ability, high temperature resistance, good separation and filtration effect, and stable operating flux. They are widely used in landfill leachate treatment, zero discharge and resource utilization of coal chemical wastewater, industrial circulating water treatment, and wastewater treatment of coal-fired power plants.
[0003] Back pressure at the outlet of tubular membrane permeate can easily damage the tubular membrane element and reduce its service life. A check valve needs to be installed to prevent back pressure from forming on the tubular membrane element when the equipment starts and stops. Currently, check valves on the market are general-purpose products, and there is no product suitable for tubular membrane permeate pipelines that simultaneously meets the requirements of small size, high temperature resistance, corrosion resistance, low opening pressure, and good back pressure prevention and sealing. In order to solve the above problems, this utility model proposes a tubular membrane check valve device. Summary of the Invention
[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a solution to the problems mentioned in the background art.
[0005] The objective of this utility model can be achieved through the following technical solutions:
[0006] A tubular membrane check valve device includes an inlet valve body, an outlet valve body, fasteners, a valve seat, a valve seat gasket, a valve core, a rotating shaft, a groove, a counterweight, and a valve core gasket. Both the inlet and outlet valve bodies are threadedly connected to the fasteners. The inlet and outlet valve bodies are fitted together and their axes coincide. A valve seat and a valve seat gasket are sleeved between the inlet and outlet valve bodies. The rotating shaft of the valve core is rotatably connected to the valve seat. A valve core gasket is provided between the valve core and the valve seat. One side of the valve seat is fitted to the inlet valve body, and the other end of the valve seat is fitted to the valve seat gasket. The other end of the valve seat gasket is fitted to the outlet valve body. The counterweight is located at the center of the valve core and is fixedly connected to the valve core. The rotating shaft is located at the edge of the valve core, and the groove is located on the valve core.
[0007] Preferably, the device further includes a rope, a circular brush, a first spring, and a second spring. One end of each of the first and second springs is fixedly connected to the inner wall of the inlet valve body, and the other end of each of the first and second springs is fixedly connected to the circular brush. The spring bodies of the first and second springs are in close contact with the inner wall of the inlet valve body. One end of the rope is fixedly connected to the circular brush, and the other end of the rope is fixedly connected to the valve core. The outer ring of the circular brush is in close contact with the inner wall of the inlet valve body, and the circular brush and the inlet valve body are coaxial.
[0008] Preferably, it also includes a clamp sealing surface, a buffer chamfer, and a socket step; the clamp sealing surface, buffer chamfer, and socket step are all provided on the inner side of the outlet valve body.
[0009] Preferably, it also includes a groove, which is disposed on the valve seat. When the tubular diaphragm stops running, the valve core, valve core gasket and groove fit tightly together to achieve a check valve seal.
[0010] Preferably, the valve core is made of any one of CPVC, UPVC, stainless steel, nylon, and polytetrafluoroethylene.
[0011] Preferably, the inlet valve body, outlet valve body, valve seat, valve seat gasket, and valve core gasket are all circular in shape.
[0012] The beneficial effects of this utility model are:
[0013] 1. The tubular membrane check valve device of this utility model is small in size and can be installed between two tubular membranes in a space-constrained environment.
[0014] 2. The tubular membrane check valve device of this utility model can be made of CPVC material, which can withstand temperatures up to 80℃ and resist acid and alkali corrosion.
[0015] 3. The tubular membrane check valve device of this utility model has a rotating shaft at the end of the valve core and a valve core gasket in the slot, which achieves low opening pressure and good back pressure prevention and sealing performance. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is an exploded view of the present invention;
[0019] Figure 3 This is a schematic diagram of the water outlet valve body structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the valve seat structure of this utility model;
[0021] Figure 5 This is a schematic diagram of the valve core structure of this utility model;
[0022] Figure 6 This is a cross-sectional view of the mechanism of this utility model;
[0023] Figure 7 This is a front view of the present utility model;
[0024] In the diagram: 1. Inlet valve body; 2. Outlet valve body; 21. Clamping sealing surface; 22. Buffer chamfer; 23. Socket step; 3. Fastener; 4. Valve seat; 41. Groove; 5. Valve seat gasket; 6. Valve core; 61. Rotating shaft; 62. Slot; 63. Counterweight; 7. Valve core gasket; 8. Rope; 9. Circular brush; 10. First spring; 11. Second spring. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] A tubular diaphragm check valve device includes an inlet valve body 1, an outlet valve body 2, a fastener 3, a valve seat 4, a valve seat gasket 5, a valve core 6, a rotating shaft 61, a groove 62, a counterweight 63, and a valve core gasket 7. The inlet valve body 1 and the outlet valve body 2 are both threadedly connected to the fastener 3. The inlet valve body 1 and the outlet valve body 2 are fitted together and their axes coincide. A valve seat 4 and a valve seat gasket 5 are sleeved between the inlet valve body 1 and the outlet valve body 2. The rotating shaft 61 of the core 6 is rotatably connected to the valve seat 4. A valve core gasket 7 is provided between the valve core 6 and the valve seat 4. One side of the valve seat 4 is in contact with the inlet valve body 1, and the other end of the valve seat 4 is in contact with the valve seat gasket 5. The other end of the valve seat gasket 5 is in contact with the outlet valve body 2. The counterweight 63 is located at the center of the valve core 6 and the valve core 6 is fixedly connected. The rotating shaft 61 is located at the edge of the valve core 6, and the slot 62 is located on the valve core 6.
[0027] The tubular membrane check valve device includes a rope 8, a circular brush 9, a first spring 10, and a second spring 11. One end of the first spring 10 and the second spring 11 are fixedly connected to the inner wall of the inlet valve body 1, and the other end of the first spring 10 and the second spring 11 are fixedly connected to the circular brush 9. The spring bodies of the first spring 10 and the second spring 11 are tightly attached to the inner wall of the inlet valve body 1. One end of the rope 8 is fixedly connected to the circular brush 9, and the other end of the rope 8 is fixedly connected to the valve core 6. The outer ring of the circular brush 9 is tightly attached to the inner wall of the inlet valve body 1, and the circular brush 9 and the inlet valve body 1 are coaxial. It also includes a clamping sealing surface 21, a buffer chamfer 22, and a socket step 23. The clamping sealing surface 21, the buffer chamfer 22, and the socket step 23 are all located on the inner side of the outlet valve body 2. It also includes a groove 41, which is located on the valve seat 4. When the tubular membrane stops running, the valve core 6, the valve core gasket 7, and the groove 41 fit tightly together to achieve a check valve seal.
[0028] Fastener 3 connects the inlet valve body 1, valve seat 4, valve seat gasket 5, and outlet valve body 2, and achieves axial sealing of the fluid by squeezing the valve seat gasket 5.
[0029] The tubular membrane permeate enters the inlet valve body 1. Under the action of fluid pressure, the valve core 6 opens along the rotating shaft 61. The rotating shaft 61 rotates at a certain angle and is restricted to a certain position by the buffer chamfer 22. The check valve is in the fully open state. When the valve core 6 opens along the rotating shaft 61, the valve core 6 pulls the rope 8. The rope 8 drives the circular brush 9. While the circular brush 9 moves along the inner wall of the inlet valve body 1, it can remove dirt on the inner wall.
[0030] When the tubular diaphragm stops operating instantly, the valve core 6 rotates and closes along the rotating shaft 61 under the combined action of gravity and reverse fluid pressure. At this time, the valve core 6, valve core gasket 7, and groove 41 fit tightly to achieve a seal. The greater the reverse fluid pressure, the better the seal. After the valve core 6 rotates and closes, when there is no tension from the rope 8, the first spring 10 and the second spring 11 will retract and return the circular brush 9 to its original position.
[0031] The inlet valve body 1 and outlet valve body 2 are made of CPVC, while the valve seat 4 and valve core 6 are made of 304 stainless steel, enabling them to operate at temperatures up to 80℃.
[0032] The inlet valve body 1 and outlet valve body 2 are made of CPVC, and the valve seat 4 and valve core 6 are also made of CPVC, enabling them to operate in a state resistant to acid and alkali corrosion.
[0033] The opening pressure and closing sensitivity of the check valve can be adjusted by adjusting the weight of the valve core 6. Specifically, this can be achieved by adjusting the mass of the counterweight 63.
[0034] The socket step 23 has a diameter of DN40, which allows for direct connection with DN40 pipes.
[0035] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0038] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A tubular diaphragm check valve device, characterized in that, Includes inlet valve body (1), outlet valve body (2), fastener (3), valve seat (4), valve seat gasket (5), valve core (6), and rotating shaft. (61), slot (62), counterweight (63), and valve core gasket (7); the inlet valve body (1) and outlet valve body (2) are both threadedly connected to fasteners (3), the inlet valve body (1) and outlet valve body (2) are fitted together and their axes coincide, a valve seat (4) and a valve seat gasket (5) are sleeved between the inlet valve body (1) and outlet valve body (2), the rotating shaft (61) of the valve core (6) is rotatably connected to the valve seat (4), and the valve core (6) and valve... A valve core gasket (7) is provided between the seats (4). One side of the valve seat (4) is fitted and connected to the inlet valve body (1), and the other end of the valve seat (4) is fitted and connected to the valve seat gasket (5). The other end of the valve seat gasket (5) is fitted and connected to the outlet valve body (2). The counterweight (63) is set at the center of the valve core (6) and the valve core (6) is fixedly connected. The rotating shaft (61) is set at the edge of the valve core (6), and the slot (62) is set on the valve core (6).
2. The tubular diaphragm check valve device according to claim 1, characterized in that, It also includes a rope (8), a circular brush (9), a first spring (10) and a second spring (11). One end of the first spring (10) and the second spring (11) are fixedly connected to the inner wall of the water inlet valve body (1), and the other end of the first spring (10) and the second spring (11) are fixedly connected to the circular brush (9). The spring bodies of the first spring (10) and the second spring (11) are close to the inner wall of the water inlet valve body (1). One end of the rope (8) is fixedly connected to the circular brush (9), and the other end of the rope (8) is fixedly connected to the valve core (6). The outer ring of the circular brush (9) is close to the inner wall of the water inlet valve body (1). The circular brush (9) and the water inlet valve body (1) are coaxial.
3. The tubular diaphragm check valve device according to claim 1, characterized in that, It also includes a clamp sealing surface (21), a buffer chamfer (22), and a socket step (23); the clamp sealing surface (21), the buffer chamfer (22), and the socket step (23) are all located on the inner side of the outlet valve body (2).
4. The tubular diaphragm check valve device according to claim 1, characterized in that, It also includes a groove (41), which is provided on the valve seat (4). When the tubular diaphragm stops running, the valve core (6), the valve core gasket (7) and the groove (41) fit tightly together to achieve a check valve seal.
5. The tubular diaphragm check valve device according to claim 1, characterized in that, The valve core (6) is made of any one of CPVC, UPVC, stainless steel, nylon, and polytetrafluoroethylene.
6. The tubular diaphragm check valve device according to claim 1, characterized in that, The inlet valve body (1), outlet valve body (2), valve seat (4), valve seat gasket (5), and valve core gasket (7) are all circular in shape.