Float type one-way valve

Abstract

The utility model discloses a float type one-way valve which comprises a valve body, a valve element and a limiting component, the valve body is provided with a valve cavity, and the float type one-way valve is provided with a valve port portion. The limiting component is located in the valve cavity and fixedly connected with the valve body, the limiting component comprises a transverse blocking part and a rod part, the transverse blocking part extends in the radial direction of the valve body, when the float type one-way valve is located at the first position, the valve element abuts against the transverse blocking part, and when the float type one-way valve is located at the second position, the valve element abuts against the rod part. And when the float-type one-way valve is located at the second position, the valve element abuts against the valve port part, the rod part extends from the crosspiece part to the valve port part, and the rod part can abut against the valve element in the circumferential direction. According to the float-type one-way valve, the rod part can abut against the valve element in the circumferential direction, and compared with the background technology, noise generated by rotation of the valve element of the float-type one-way valve can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a float type one-way valve. Background Art

[0002] A check valve is a one-way conducting valve, which can be divided into many types based on its structure. Among them, the float type check valve is widely used in air-conditioning systems.

[0003] Figure 1 The figure shows a cross-sectional structure diagram of a float type one-way valve in the background technology. Figure 1 As shown, the float-type one-way valve mainly includes a valve body 01, a valve seat 02, a valve core 03, and a retaining ring 04. The valve seat 02, the valve core 03, and the retaining ring 04 are located in the inner cavity 011 of the valve body 01, and the valve seat 02 and the retaining ring 04 are respectively fixedly connected to the valve body 01. When the fluid flows from left to right, the valve core 03 can move to the right and abut against the retaining ring 04. At this time, the float-type one-way valve is in an open state; when the fluid flows from right to left, the valve core 03 can move to the left and abut against the valve seat 02. At this time, the float-type one-way valve is in a closed state.

[0004] In the float type one-way valve of this structure, there is a gap between the entire outer peripheral wall of the valve core 03 and the inner wall of the valve body 01, that is, during the operation of the float type one-way valve, the valve core 03 will rotate relative to the valve body 01, thereby generating noise. Utility Model Content

[0005] The present application provides a float-type one-way valve, including a valve body, a valve core and a limiting component, wherein the valve body has a valve cavity, and the float-type one-way valve has a valve mouth; the limiting component is located in the valve cavity, and the limiting component is fixedly connected to the valve body, and the limiting component includes a cross-piece and a rod, wherein the cross-piece is extended along the radial direction of the valve body, and when the float-type one-way valve is in a first position, the valve core is abutted against the cross-piece, and when the float-type one-way valve is in a second position, the valve core is abutted against the valve mouth, and the rod is extended from the cross-piece toward the valve mouth, and the rod can abut against the valve core circumferentially. The float-type one-way valve of the present application, in which the rod can abut against the valve core circumferentially, can reduce the noise generated by the rotation of the valve core of the float-type one-way valve compared to the background technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A cross-sectional structural diagram of a float-type one-way valve is provided as background technology;

[0007] Figure 2 A structural schematic diagram of a float type one-way valve provided by the utility model;

[0008] Figure 3a for Figure 2 A schematic diagram of the three-dimensional structure of the middle limiting component;

[0009] Figure 3b for Figure 3a A schematic diagram of the three-dimensional structure of the middle limiter;

[0010] Figure 4a for Figure 2 Schematic diagram of the three-dimensional structure of the middle valve core;

[0011] Figure 4b for Figure 4a Orthographic projection diagram of the middle valve core;

[0012] Figure 5a is a schematic diagram of the three-dimensional structure of another limiting component;

[0013] Figure 5b for Figure 5a A schematic diagram of the three-dimensional structure of the middle limiter;

[0014] Figure 5c for Figure 5a A schematic diagram of the three-dimensional structure of the middle connecting piece;

[0015] Figure 6 The present invention is a schematic structural diagram of another float type one-way valve provided by the present invention.

[0016] Figures 2 to 6 middle:

[0017] 1-valve body, 10-valve chamber;

[0018] 11-inner convex point, 12-convex ring;

[0019] 2-valve seat, 21-valve mouth, 22-annular groove;

[0020] 3-valve core, 31-main body;

[0021] 311- plane wall, 32- head;

[0022] 4 / 4A / 4B-limiting part, 41 / 41B-cross bar;

[0023] 42 / 42B-rod, 421 / 421B-first rod;

[0024] 422 / 422B-second rod portion, 423-first edge portion, 424-second edge portion;

[0025] 44 / 44A-first leg, 441-first step;

[0026] 441A-the first convex part, 45 / 45A-the second leg;

[0027] 451-second step portion, 451A-second convex portion;

[0028] 5 / 5A-connecting piece, 51-first through hole, 52-second through hole. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] In this article, the terms "upper, lower, left, right" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0031] Figure 2 A structural schematic diagram of a float type one-way valve provided by the utility model; Figure 3a for Figure 2 A schematic diagram of the three-dimensional structure of the middle limiting component; Figure 3b for Figure 3a A schematic diagram of the three-dimensional structure of the middle limiter; Figure 4a for Figure 2 Schematic diagram of the three-dimensional structure of the middle valve core; Figure 4b for Figure 4a Schematic diagram of the orthographic projection of the middle valve core.

[0032] As shown in the figure, in a specific embodiment, the float-type one-way valve provided by the present application includes a valve body 1, a valve seat 2, a valve core 3 and a limit component. The valve body 1 is a tubular structure, which is made of a pipe fitting and has a valve cavity 10. The valve seat 2 is located in the valve cavity 10, and the valve seat 2 is fixedly connected to the valve body 1. Specifically, Figure 2 As shown, the outer wall of the valve seat 2 includes an annular groove 22 , and the valve body 1 includes a convex ring 12 , which protrudes inward and is embedded in the annular groove 22 , so that the valve seat 2 is fixed to the valve body 1 , and the valve seat 2 includes a valve mouth portion 21 .

[0033] like Figure 2 , Figure 4a , Figure 4b As shown, the valve core 3 is located in the valve cavity 10. The valve core 3 is made of non-metallic material. The valve core 3 includes a main body 31 and a head 32. The main body 31 is generally square in cross section, that is, the outer peripheral wall of the valve core 3 includes a plane wall 311. The head 32 of the valve core 3 is conical. Under the action of the fluid, the valve core 3 can move so that the head 32 abuts against the valve port 21 of the valve seat 2 to close the valve ( Figure 2The figure shows the float-type one-way valve in fully open state).

[0034] definition Figure 2 The left-right direction of the paper is the axial direction of the valve body 1 , and the direction perpendicular to the axial direction of the valve body 1 is the radial direction of the valve body 1 .

[0035] like Figure 3a , Figure 3b As shown, the limiting component is located in the valve cavity 10, and the limiting component specifically includes a connecting member 5 and a limiting member 4. The connecting member 5 is annular, and the limiting member 4 is fixedly connected to the connecting member 5, and the connecting member 5 is fixedly connected to the valve body 1. As a specific embodiment, the limiting member 4 includes a crosspiece 41 and a rod 42, and the crosspiece 41 is arranged to extend radially along the valve body 1. The valve core 3 is located between the valve seat 2 and the crosspiece 41. When the float-type one-way valve is located as shown in FIG. Figure 2 In the first position shown, the valve core 3 abuts against the crosspiece 41, that is, when the float-type one-way valve of the present application is in the maximum valve opening position, the valve core 3 contacts the crosspiece 41, and when the float-type one-way valve is in the second position (not shown), the valve core 3 abuts against the valve mouth 21. In this embodiment, the rod 42 extends from the crosspiece 41 toward the valve mouth 21, and the cross section of the rod 42 is rectangular. The rod 42 includes a first edge 423 and a second edge 424 close to the valve core 3. In the circumferential direction of the valve body 1, the above-mentioned plane wall 311 can abut against the first edge 423 or the second edge 424 to limit the rotation of the valve core 3. Here, "limiting rotation" means allowing the valve core 3 to rotate within a certain angle range, but not more than one circle (360°). Of course, the cross section of the rod 42 can also be a triangle, a trapezoid, etc., as long as the purpose of the invention of the present application can be achieved. Compared with the background technology, such a configuration can reduce the noise generated by the continuous rotation of the valve core during the operation of the float-type one-way valve. After the float-type one-way valve of the present application is installed in refrigeration equipment such as air conditioners, the user's comfort can be improved.

[0036] Further, such as Figure 3a As shown, the rod portion 42 specifically includes a first rod portion 421 and a second rod portion 422, the first rod portion 421 and the second rod portion 422 are respectively extended from the crosspiece portion 41 toward the valve mouth portion 21, and the first rod portion 421 and the second rod portion 422 are symmetrically arranged relative to the central axis of the connecting member 5. In this way, the first rod portion 421 and the second rod portion 422 respectively have a first edge portion and a second edge portion, and accordingly, as shown in FIG. Figure 4a , Figure 4b As shown, the valve core 3 may also include two plane walls, one side plane wall cooperates with the first edge and the second edge of the first rod portion 421 to prevent rotation, and the other side plane wall cooperates with the first edge and the second edge of the second rod portion 422 to prevent rotation, so that the valve core 3 moves more smoothly and has a better anti-rotation effect, which can further reduce the generation of noise.

[0037] like Figure 3a , Figure 3b As shown, the stopper 4 further includes a first leg 44 and a second leg 45, the first leg 44 and the second leg 45 are extended from the cross section 41 in a direction away from the valve mouth 21, the first leg 44 includes a first step portion 441 with a step surface facing the connecting member 5, the second leg 45 includes a second step portion 451 with a step surface facing the connecting member 5, the connecting member 5 is placed on the first step portion 441 and the second step portion 451, and the step wall of the first step portion 441 and the step wall of the second step portion 451 are located on the radial inner side of the connecting member 5, and the connecting member 5 is fixedly connected to the first step portion 441 and the second step portion 451 by welding. With such a configuration, on the one hand, the positioning of the connecting member 5 and the stopper 4 is reliable when they are welded, and on the other hand, it can ensure that the outer peripheral wall of the connecting member 5 fits the inner wall of the valve body 1, thereby improving the coaxiality of the stopper component and the valve body 1.

[0038] Figure 5a is a schematic diagram of the three-dimensional structure of another limiting component; Figure 5b for Figure 5a A schematic diagram of the three-dimensional structure of the middle limiter; Figure 5c for Figure 5a Schematic diagram of the three-dimensional structure of the connecting part.

[0039] Please refer to Figure 5a , Figure 5b , Figure 5c The difference between this embodiment and the above-mentioned embodiment lies in the structure of the limiting member and the connecting member and the connection method between the two.

[0040] In this embodiment, the stopper 4A includes a first leg 44A and a second leg 45A, the first leg 44A and the second leg 45A are extended from the cross section 41 in a direction away from the valve port 21, the first leg 44A is fixedly engaged with the connecting member 5A, and the second leg 45A is fixedly engaged with the connecting member 5A. That is, in this embodiment, the stopper 4A and the connecting member 5A are fixedly engaged by means of a clamping connection.

[0041] As a specific embodiment, the first leg 44A and the second leg 45A are symmetrically arranged relative to the central axis of the connecting member 5A, the first leg 44A includes a first protrusion 441A, the first protrusion 441A protrudes toward the second leg 45A, and the second leg 45A includes a second protrusion 451A, the second protrusion 451A protrudes toward the first leg 44A. The connecting member 5A includes a first through hole 51 and a second through hole 52, the first through hole 51 and the second through hole 52 penetrate the inner circumferential wall and the outer circumferential wall of the connecting member 5A, the first through hole 51 and the second through hole 52 are symmetrically arranged relative to the central axis of the connecting member 5A, the first protrusion 441A is at least partially located in the first through hole 51, and the second protrusion 451A is at least partially located in the second through hole 52, that is, the first protrusion 441A is clamped into the first through hole 51, and the second protrusion 451A is clamped into the second through hole 52, so as to realize the clamping and fixing of the stopper 4A and the connecting member 5A.

[0042] Of course, as a variation of a connecting member, the connecting member includes a first card slot and a second card slot, the slot of the first card slot is located on the inner circumferential wall of the connecting member, the slot of the second card slot is located on the inner circumferential wall of the connecting member, the first card slot and the second card slot are symmetrically arranged relative to the central axis of the connecting member, the first protrusion 441A is at least partially located in the first card slot, and the second protrusion 451A is at least partially located in the second card slot, such an arrangement can also realize the card connection and fixation of the limit member 4A and the connecting member.

[0043] like Figure 2 As shown, the valve body 1 is also processed with an inner convex point 11, which protrudes into the valve body 1. There are at least two inner convex points 11, and the two inner convex points 11 are arranged along the axial direction of the valve body 1. The two inner convex points 11 respectively limit the two ends of the connecting member 5, thereby fixing the connecting member 5.

[0044] In this embodiment, the H-shaped stopper 4 is specifically a sheet metal stamping part, that is, it is integrally formed by a metal sheet stamping process, that is, the cross bar 41, the first rod 421, the second rod 422, the first leg 44, and the second leg 45 are an integral structure. In this way, the material cost and process cost of the stopper 4 can be reduced while satisfying the anti-rotation function of the valve core 3.

[0045] Figure 6 The present invention is a schematic structural diagram of another float type one-way valve provided by the present invention.

[0046] As a variation, this embodiment differs from the above embodiment in the structure of the limiting components and their connection relationship.

[0047] like Figure 6As shown in the figure, in this embodiment, the limiting component includes a limiting member 4B. The limiting member 4B is in a "C" shape and includes a crossbar portion 41B and a rod portion 42B. Along the axial direction of the valve body 1, the crossbar portion 41B can limit the moving stroke of the valve core 3, and the rod portion 42B cooperates with the outer peripheral wall of the valve core 3 to limit the circumferential rotation of the valve core 3. And the rod portion 42B is fixedly connected to the valve seat 2. The rod portion 42B includes a first rod portion 421B and a second rod portion 422B. During the assembly process, first place the valve core 3 between the first rod portion 421B and the second rod portion 422B, then fix the first rod portion 421B and the second rod portion 422B to the valve seat 2 respectively by welding or clamping, and then place the assembly composed of the valve seat 2, the valve core 3 and the limiting member 4B into the valve cavity 10 of the valve body 1. Finally, fix the valve seat 2 to the valve body 1 by rolling or dotting. In this way, the limiting member 4B is fixedly connected to the valve seat 2, and the valve seat 2 is fixedly connected to the valve body 1. Therefore, there is no need to provide the connecting member in the previous embodiment, and the number of components is reduced compared with the previous embodiment.

[0048] The above has introduced the float type one-way valve provided by the present utility model in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A float type one-way valve, characterized in that: It comprises a valve body, a valve core and a limit component, wherein the valve body has a valve cavity, and the float-type one-way valve has a valve port; The limiting component is located in the valve cavity, and the limiting component is fixedly connected to the valve body. The limiting component includes a cross portion and a rod portion, and the cross portion is extended radially along the valve body. When the float-type one-way valve is in a first position, the valve core is abutted against the cross portion, and when the float-type one-way valve is in a second position, the valve core is abutted against the valve mouth portion. The rod portion is extended from the cross portion toward the valve mouth portion, and the rod portion can abut against the valve core in the circumferential direction.

2. The float type one-way valve according to claim 1, characterized in that: The limiting component includes a connecting piece and a limiting piece, the connecting piece is in a circular ring shape, the connecting piece is fixedly connected to the limiting piece, the connecting piece is fixedly connected to the valve body, the limiting piece includes the rod portion and the cross portion, the rod portion includes a first rod portion and a second rod portion, the first rod portion and the second rod portion are symmetrically arranged relative to the central axis of the connecting piece.

3. The float type one-way valve according to claim 2, characterized in that: The limiting member includes a first step portion and a second step portion with the step surface facing the connecting member, the connecting member is placed on the first step portion and the second step portion, the step wall of the first step portion and the step wall of the second step portion are located radially inside the connecting member, and the connecting member is fixedly connected to the first step portion and the second step portion.

4. The float type one-way valve according to claim 3, characterized in that: The limiting member further includes a first support leg and a second support leg, wherein the first support leg and the second support leg are extended from the cross portion toward a direction away from the valve mouth portion, the first support leg includes the first step portion, and the second support leg includes the second step portion.

5. The float type one-way valve according to claim 2, characterized in that: The limiting member further includes a first support leg and a second support leg, wherein the first support leg and the second support leg are extended from the cross piece toward a direction away from the valve mouth, the first support leg is clamped and fixed to the connecting member, and the second support leg is clamped and fixed to the connecting member.

6. The float type one-way valve according to claim 5, characterized in that: The first leg and the second leg are symmetrically arranged relative to the central axis of the connecting member, the first leg includes a first convex portion, the first convex portion protrudes toward the second leg, the second leg includes a second convex portion, the second convex portion protrudes toward the first leg, the connecting member includes a first through hole and a second through hole, the first through hole and the second through hole penetrate the inner circumferential wall and the outer circumferential wall of the connecting member, the first through hole and the second through hole are symmetrically arranged relative to the central axis of the connecting member, the first convex portion is at least partially located in the first through hole, and the second convex portion is at least partially located in the second through hole; Alternatively, the connecting member includes a first card slot and a second card slot, the slot of the first card slot is located on the inner circumferential wall of the connecting member, the slot of the second card slot is located on the inner circumferential wall of the connecting member, the first card slot and the second card slot are symmetrically arranged relative to the central axis of the connecting member, the first protrusion is at least partially located in the first card slot, and the second protrusion is at least partially located in the second card slot.

7. The float type one-way valve according to any one of claims 1 to 6, characterized in that: The outer peripheral wall of the valve core includes a plane wall, and the rod portion includes a first edge portion and a second edge portion close to the valve core. In the circumferential direction of the valve body, the plane wall can abut against the first edge portion or the second edge portion.

8. The float type one-way valve according to any one of claims 2 to 6, characterized in that: The valve body comprises inner convex points, and there are at least two inner convex points. The two inner convex points are arranged along the axial direction of the valve body, and the two inner convex points are used to fix the connecting piece.

9. The float type one-way valve according to any one of claims 2 to 6, characterized in that: It also includes a valve seat, which is located in the valve cavity, fixedly connected to the valve body, and includes the valve mouth. The limiter is an integrated structure, and the limiter is integrally formed by a stamping process.

10. The float type one-way valve according to claim 1, characterized in that: It also includes a valve seat, which is located in the valve cavity and fixedly connected to the valve body. The valve seat includes the valve mouth portion, the limiting component includes a limiting member, the limiting member includes the rod portion and the cross portion, and the rod portion is fixedly connected to the valve seat.

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