Dynamic flow control valve

Abstract

The utility model discloses a dynamic flow control valve which is installed in a pipeline and comprises a barrel body, a first baffle, a first valve element, a second valve element, a second baffle and an elastic piece. When flowing in a pipeline, liquid flows to the end, away from the second valve element, of the first valve element through the first through-flow hole set and also flows to the end, close to the second valve element, of the first valve element through the second through-flow hole set and the resistance hole set. Due to the existence of the resistance hole group, the pressure of the end, close to the second valve element, of the first valve element is lower than that of the end, away from the second valve element, of the first valve element, so that a pressure difference is formed at the two ends of the first valve element and acts on the first valve element, and the first valve element moves towards the second valve element until the acting force counteracts the elastic force of the elastic piece; the first valve element can shield part of the resistance hole set, so that the throttling effect is achieved, flow control is facilitated, and then self-adaptive flow adjustment is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid control, and in particular relates to a dynamic flow control valve. Background Art

[0002] At present, when the system flow needs to be constant, most solutions use electric valves to adjust the system pressure loss or diversion, and a small number of solutions use self-acting flow control valves. However, both solutions are complex in structure and expensive. In addition, when using electric valves to adjust the system pressure loss or diversion, it is also necessary to design an electric control solution, and the design process is relatively cumbersome. Utility Model Content

[0003] In order to overcome the defects of the prior art, the utility model provides a dynamic flow control valve which can adjust the flow adaptively.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A dynamic flow control valve, which is installed in a pipeline, comprises:

[0006] A cylinder body, wherein a first hole body is provided through the cylinder body along the length direction, and a plurality of resistance hole groups are provided in sequence on the side surface of the first hole body along the length direction;

[0007] A first baffle, the first baffle is arranged at one end of the cylinder, and is provided with a first through-flow hole group for communicating with the first hole body and a second through-flow hole group for communicating with the resistance hole group;

[0008] A first valve core, the first valve core is slidably connected to one end of the first hole body close to the first flow hole group, and the cross-sectional size of the end of the first valve core close to the first flow hole group matches the cross-sectional size of the first hole body;

[0009] a second valve core, the second valve core is connected to an end of the first hole body away from the first through-hole group, the cross-sectional dimension of the end of the second valve core close to the first through-hole group is smaller than the cross-sectional dimension of the first hole body, and the end of the second valve core away from the first through-hole group is provided with a third through-hole group for sequentially connecting the first hole body and the resistance hole group;

[0010] A second baffle, the second baffle is arranged at the other end of the cylinder, and a fourth through-flow hole group for communicating with the third through-flow hole group is arranged on the second baffle;

[0011] An elastic member, the elastic member is arranged between the first valve core and the second valve core;

[0012] The outer diameter of the end of the cylinder away from the first baffle and the outer diameter of the first baffle are both matched with the inner diameter of the pipeline.

[0013] The beneficial effects of adopting the above technical scheme are as follows: when the liquid flows in the pipeline, it will flow through the first flow hole group to the end of the first valve core away from the second valve core, and will also flow through the second flow hole group and the resistance hole group to the end of the first valve core close to the second valve core. The existence of the resistance hole group will make the pressure at the end of the first valve core close to the second valve core lower than the pressure at the end of the first valve core away from the second valve core, so as to form a pressure difference at both ends of the first valve core and act on the first valve core, so that the first valve core moves toward the second valve core until the force is offset by the elastic force of the elastic member. At this time, the first valve core can block part of the resistance hole group, thereby playing a throttling role and facilitating flow control, thereby realizing adaptive flow regulation; in addition, the first baffle plate and the second baffle plate can be removed to install the first valve core, the elastic member and the second valve core into the cylinder, and then the first baffle plate and the second baffle plate can be installed to complete the assembly of the dynamic flow control valve, that is, the structure is relatively simple.

[0014] In one embodiment, the axes of the cylinder, the first baffle, the first valve core, the second valve core and the second baffle coincide, the first flow hole group includes a second hole body coaxially arranged on the first baffle, the second flow hole group includes a plurality of third hole bodies uniformly arranged on the circumference of the first baffle, the resistance hole group includes a plurality of resistance holes uniformly arranged on the circumference of the cylinder, the third flow hole group includes a plurality of fourth hole bodies uniformly arranged on the circumference of the second valve core, and the fourth flow hole group includes a fifth hole body coaxially arranged on the second baffle.

[0015] The beneficial effect of adopting the above technical solution is that such an arrangement can make the liquid flow in and out evenly, which is conducive to the uniform distribution of the force.

[0016] In one embodiment, the pore size of the first pore body is larger than the pore size of the second pore body.

[0017] The beneficial effect of adopting the above technical solution is that the aperture of the first hole body is larger than that of the second hole body, that is, the outer diameter of the first valve core close to the second hole body is larger than the aperture of the first hole body, so that the first valve core is blocked by the first baffle, thereby preventing the first valve core from escaping from the cylinder.

[0018] In one embodiment, the resistance hole is a triangular hole, a square hole or a circular hole.

[0019] In one embodiment, a first sealing ring in contact with the inner wall of the first hole body is disposed on the outer side of one end of the first valve core close to the first flow hole group.

[0020] The beneficial effect of adopting the above technical solution is that the first sealing ring can seal the gap between the outer side of the first valve core and the inner wall of the first hole body to prevent the liquid at one end of the first valve core from directly entering the other end of the first valve core through the gap between the outer side of the first valve core and the inner wall of the first hole body, thereby ensuring the stable and normal operation of the dynamic flow control valve.

[0021] In one embodiment, a second sealing ring for contacting the inner wall of the pipeline is provided on the outer side of one end of the cylinder away from the first baffle.

[0022] The beneficial effect of adopting the above technical solution is that the second sealing ring can seal the gap between the outer side of the end of the cylinder away from the first baffle and the inner wall of the pipeline, so as to prevent the liquid flowing in from the second flow hole group from directly flowing out through the gap between the outer side of the end of the cylinder away from the first baffle and the inner wall of the pipeline, thereby ensuring the stable and normal operation of the dynamic flow control valve.

[0023] In one embodiment, the first baffle is threadedly connected to the cylinder.

[0024] The beneficial effect of adopting the above technical solution is that the first baffle is threadedly connected to the cylinder body to facilitate installation and disassembly, thereby facilitating the installation of the second valve core, the elastic member and the first valve core.

[0025] In one embodiment, the second valve core is slidably connected to the first hole body, and the second baffle is threadedly connected to an end of the first hole body away from the first baffle.

[0026] The beneficial effect of adopting the above technical solution is: the second baffle is threadedly connected to the end of the first hole body away from the first baffle, so as to facilitate the installation of the first valve core, the elastic member and the second valve core, and at the same time facilitate the adjustment of the installation length of the elastic member by twisting the second baffle or the first baffle.

[0027] In one embodiment, the ends of the first valve core and the second valve core close to each other are respectively provided with a sixth hole body and a seventh hole body, and the two ends of the elastic member are respectively located in the sixth hole body and the seventh hole body.

[0028] The beneficial effects of adopting the above technical solution are: the sixth hole body and the seventh hole body can provide installation space for the elastic member, and have a certain limiting effect on the axial and radial positions of both ends of the elastic member, thereby preventing the elastic member from falling from between the first valve core and the second valve core.

[0029] In one embodiment, the aperture of the sixth hole body matches the outer diameter of the end of the second valve core close to the first valve core.

[0030] The beneficial effect of adopting the above technical solution is that the aperture of the sixth hole body matches the outer diameter of the end of the second valve core close to the first valve core, that is, the end of the second valve core close to the first valve core slides in the sixth hole body, which helps to prevent the elastic part from falling from between the first valve core and the second valve core.

[0031] The beneficial effects of the utility model are:

[0032] When the liquid flows in the pipeline, it will flow through the first flow hole group to the end of the first valve core away from the second valve core, and will also flow through the second flow hole group and the resistance hole group to the end of the first valve core close to the second valve core. The existence of the resistance hole group will make the pressure at the end of the first valve core close to the second valve core lower than the pressure at the end of the first valve core away from the second valve core, so as to form a pressure difference at both ends of the first valve core and act on the first valve core, so that the first valve core moves toward the second valve core until the force is offset by the elastic force of the elastic member. At this time, the first valve core can block part of the resistance hole group, thereby playing a throttling role and facilitating flow control, thereby realizing adaptive flow regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0034] in:

[0035] Figure 1 A schematic structural diagram of an embodiment of the utility model is shown;

[0036] Figure 2 Shows Figure 1 Sectional view at AA in the middle;

[0037] Figure 3 An axonometric view of the utility model is shown;

[0038] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0039] Reference numerals:

[0040] 1-first baffle, 101-second hole body, 102-third hole body, 2-cylinder body, 201-resistance hole, 202-first hole body, 3-second sealing ring, 4-first sealing ring, 5-first valve core, 501-sixth hole body, 6-elastic member, 7-second valve core, 701-seventh hole body, 702-fourth hole body, 8-second baffle, 801-fifth hole body. DETAILED DESCRIPTION

[0041] The utility model will be further described below in conjunction with the accompanying drawings.

[0042] The utility model provides a dynamic flow control valve, which is installed in a pipeline. Figure 1-3 As shown, it includes:

[0043] The cylinder 2 has a first hole 202 extending through the cylinder 2 along the length direction, and a plurality of resistance hole groups are sequentially arranged on the side of the first hole 202 along the length direction;

[0044] A first baffle 1, which is disposed at one end of the cylinder 2, and is provided with a first flow hole group for communicating with the first hole body 202 and a second flow hole group for communicating with the resistance hole group;

[0045] A first valve core 5, the first valve core 5 is slidably connected to one end of the first hole body 202 close to the first flow hole group, and the cross-sectional size of the end of the first valve core 5 close to the first flow hole group matches the cross-sectional size of the first hole body 202;

[0046] The second valve core 7 is connected to one end of the first hole body 202 away from the first through-hole group, the cross-sectional dimension of the end of the second valve core 7 close to the first through-hole group is smaller than the cross-sectional dimension of the first hole body 202, and the end of the second valve core 7 away from the first through-hole group is provided with a third through-hole group for sequentially connecting the first hole body 202 and the resistance hole group;

[0047] A second baffle 8, the second baffle 8 is arranged at the other end of the cylinder 2, and a fourth through-flow hole group for communicating with the third through-flow hole group is arranged on the second baffle 8;

[0048] An elastic member 6, the elastic member 6 is arranged between the first valve core 5 and the second valve core 7;

[0049] The outer diameter of the end of the cylinder 2 away from the first baffle 1 and the outer diameter of the first baffle 1 both match the inner diameter of the pipeline.

[0050] It can be understood that when the liquid flows in the pipeline, it will flow through the first flow hole group to the end of the first valve core 5 away from the second valve core 7, and will also flow through the second flow hole group and the resistance hole group to the end of the first valve core 5 close to the second valve core 7. The existence of the resistance hole group will make the pressure P2 at the end of the first valve core 5 close to the second valve core 7 lower than the pressure P1 at the end of the first valve core 5 away from the second valve core 7, so as to form a pressure difference at both ends of the first valve core 5 and act on the first valve core 5, so that the first valve core 5 moves toward the second valve core 7 until the force is offset by the elastic force of the elastic member 6. At this time, the first valve core 5 can block part of the resistance hole group, thereby playing a throttling role and facilitating flow control, thereby realizing adaptive flow regulation; in addition, the first baffle plate 1 and the second baffle plate 8 can be removed to install the first valve core 5, the elastic member 6 and the second valve core 7 into the cylinder 2, and then the first baffle plate 1 and the second baffle plate 8 can be installed to complete the assembly of the dynamic flow control valve, that is, the structure is relatively simple.

[0051] It should be noted that, in the initial state, the first valve core 5 preferably does not block the resistance hole group; the elastic member 6 can be a spring.

[0052] In one embodiment, the axes of the cylinder 2, the first baffle 1, the first valve core 5, the second valve core 7 and the second baffle 8 coincide, the first flow hole group includes a second hole body 101 coaxially arranged on the first baffle 1, the second flow hole group includes a plurality of third hole bodies 102 uniformly arranged on the circumference of the first baffle 1, the resistance hole group includes a plurality of resistance holes 201 uniformly arranged on the circumference of the cylinder 2, the axes of the resistance holes 201 are perpendicular to the axes of the first hole bodies 202, the third flow hole group includes a plurality of fourth hole bodies 702 uniformly arranged on the circumference of the second valve core 7, and the fourth flow hole group includes a fifth hole body 801 coaxially arranged on the second baffle 8.

[0053] It can be understood that such an arrangement enables the liquid to flow in and out evenly, thereby facilitating uniform distribution of the force.

[0054] In one embodiment, the aperture of the first hole body 202 is larger than the aperture of the second hole body 101 .

[0055] It can be understood that the aperture of the first hole body 202 is larger than the aperture of the second hole body 101, that is, the outer diameter of the end of the first valve core 5 close to the second hole body 101 is larger than the aperture of the first hole body 202, so that the first valve core 5 is blocked by the first baffle 1, thereby preventing the first valve core 5 from escaping from the cylinder 2.

[0056] In one embodiment, the resistance hole 201 is a triangular hole, a square hole or a circular hole.

[0057] It should be noted that, in the present embodiment, two resistance hole groups are provided, and the resistance hole group close to the first baffle 1 includes four triangular holes, and the other resistance hole group includes six circular holes.

[0058] In one embodiment, a first sealing ring 4 in contact with the inner wall of the first hole body 202 is disposed on the outer side of one end of the first valve core 5 close to the first flow hole group.

[0059] It can be understood that the first sealing ring 4 can seal the gap between the outer side of the first valve core 5 and the inner wall of the first hole body 202 to prevent the liquid at one end of the first valve core 5 from directly entering the other end of the first valve core 5 through the gap between the outer side of the first valve core 5 and the inner wall of the first hole body 202, thereby ensuring the stable and normal operation of the dynamic flow control valve.

[0060] It should be noted that a groove may be provided on the outer side of one end of the first valve core 5 close to the first flow hole group to install the first sealing ring 4 .

[0061] In one embodiment, a second sealing ring 3 for contacting the inner wall of the pipeline is disposed on the outer side of one end of the cylinder 2 away from the first baffle 1 .

[0062] It can be understood that the second sealing ring 3 can seal the gap between the outer side of the end of the cylinder 2 away from the first baffle 1 and the inner wall of the pipeline to prevent the liquid flowing in from the second flow hole group from directly flowing out through the gap between the outer side of the end of the cylinder 2 away from the first baffle 1 and the inner wall of the pipeline, thereby ensuring the stable and normal operation of the dynamic flow control valve.

[0063] It should be noted that a groove may be provided on the outer side of the end of the cylinder 2 away from the first baffle 1 to install the second sealing ring 3 .

[0064] In one embodiment, the first baffle 1 is threadedly connected to the cylinder 2 to facilitate installation and disassembly, thereby facilitating the installation of the second valve core 7, the elastic member 6 and the first valve core 5.

[0065] In one embodiment, the second valve core 7 is slidably connected in the first hole body 202, and the second baffle plate 8 is threadedly connected to the end of the first hole body 202 away from the first baffle plate 1, so as to facilitate the installation of the first valve core 5, the elastic member 6 and the second valve core 7, and at the same time facilitate the adjustment of the installation length of the elastic member 6 by twisting the second baffle plate 8 or the first baffle plate 1.

[0066] In one embodiment, the ends of the first valve core 5 and the second valve core 7 close to each other are respectively provided with a sixth hole 501 and a seventh hole 701 , and the two ends of the elastic member 6 are respectively located in the sixth hole 501 and the seventh hole 701 .

[0067] It is understandable that the sixth hole body 501 and the seventh hole body 701 can provide installation space for the elastic member 6 and have a certain limiting effect on the axial and radial positions of both ends of the elastic member 6, thereby preventing the elastic member 6 from falling from between the first valve core 5 and the second valve core 7.

[0068] In one embodiment, the aperture of the sixth hole 501 matches the outer diameter of the end of the second valve core 7 close to the first valve core 5 .

[0069] It can be understood that the aperture of the sixth hole body 501 matches the outer diameter of the end of the second valve core 7 close to the first valve core 5, that is, the end of the second valve core 7 close to the first valve core 5 slides in the sixth hole body 501, which helps to prevent the elastic member 6 from falling from between the first valve core 5 and the second valve core 7.

[0070] It should be noted that, in order to avoid forming a completely closed space in the fifth hole 801 and the sixth hole 501 , a corresponding vent hole can be provided on the second valve core 7 , or a gap that cannot pass through the elastic member 6 can be retained between the second valve core 7 and the sixth hole 501 .

[0071] To sum up, the dynamic flow control valve adopts differential pressure control, does not require external control, can realize adaptive adjustment, and the flow rate can be controlled within the range of ±5% of the rated flow rate; it has a simple structure and adopts a plug-in structure, which can be installed in a valve block or a steel pipe without taking up space; in addition, its cost is low, and its cost is reduced by 90% compared with a self-operated flow control valve under the same diameter requirements, and by 60% compared with an electric ball valve.

[0072] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0073] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A dynamic flow control valve installed in a pipeline, characterized in that: include: A cylinder (2), wherein a first hole (202) is provided through the cylinder (2) along the length direction, and a plurality of resistance hole groups are sequentially provided on the side surface of the first hole (202) along the length direction; a first baffle (1), the first baffle (1) being arranged at one end of the cylinder (2), the first baffle (1) being provided with a first flow hole group for communicating with the first hole body (202) and a second flow hole group for communicating with the resistance hole group; A first valve core (5), the first valve core (5) being slidably connected to one end of the first hole body (202) close to the first flow hole group, and the cross-sectional dimension of the end of the first valve core (5) close to the first flow hole group matches the cross-sectional dimension of the first hole body (202); a second valve core (7), the second valve core (7) being connected to an end of the first hole body (202) away from the first flow hole group, the cross-sectional dimension of the end of the second valve core (7) close to the first flow hole group being smaller than the cross-sectional dimension of the first hole body (202), and a third flow hole group for sequentially connecting the first hole body (202) and the resistance hole group being provided at an end of the second valve core (7) away from the first flow hole group; a second baffle (8), the second baffle (8) being arranged at the other end of the cylinder (2), the second baffle (8) being provided with a fourth through-flow hole group for communicating with the third through-flow hole group; an elastic member (6), wherein the elastic member (6) is arranged between the first valve core (5) and the second valve core (7); The outer diameter of the end of the cylinder (2) away from the first baffle (1) and the outer diameter of the first baffle (1) both match the inner diameter of the pipeline.

2. A dynamic flow control valve according to claim 1, characterized in that: The axes of the cylinder (2), the first baffle (1), the first valve core (5), the second valve core (7) and the second baffle (8) coincide with each other; the first flow hole group comprises a second hole body (101) coaxially arranged on the first baffle (1); the second flow hole group comprises a plurality of third hole bodies (102) uniformly arranged on the circumference of the first baffle (1); the resistance hole group comprises a plurality of resistance holes (201) uniformly arranged on the circumference of the cylinder (2); the third flow hole group comprises a plurality of fourth hole bodies (702) uniformly arranged on the circumference of the second valve core (7); and the fourth flow hole group comprises a fifth hole body (801) coaxially arranged on the second baffle (8).

3. A dynamic flow control valve according to claim 2, characterized in that: The pore size of the first pore body (202) is larger than the pore size of the second pore body (101).

4. A dynamic flow control valve according to claim 2, characterized in that: The resistance hole (201) is a triangular hole, a square hole or a circular hole.

5. A dynamic flow control valve according to claim 1, characterized in that: A first sealing ring (4) in contact with the inner wall of the first hole body (202) is arranged on the outer side of one end of the first valve core (5) close to the first flow hole group.

6. A dynamic flow control valve according to claim 1, characterized in that: A second sealing ring (3) for contacting the inner wall of the pipeline is arranged on the outer side of one end of the cylinder (2) away from the first baffle (1).

7. A dynamic flow control valve according to claim 1, characterized in that: The first baffle (1) is threadedly connected to the cylinder (2).

8. A dynamic flow control valve according to claim 1 or 7, characterized in that: The second valve core (7) is slidably connected in the first hole body (202), and the second baffle plate (8) is threadedly connected to an end of the first hole body (202) away from the first baffle plate (1).

9. A dynamic flow control valve according to claim 1, characterized in that: The ends of the first valve core (5) and the second valve core (7) that are close to each other are respectively provided with a sixth hole body (501) and a seventh hole body (701), and the two ends of the elastic member (6) are respectively located in the sixth hole body (501) and the seventh hole body (701).

10. A dynamic flow control valve according to claim 9, characterized in that: The aperture of the sixth hole body (501) matches the outer diameter of the end of the second valve core (7) close to the first valve core (5).

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