Improved right-angle type quick-closing check valve

Abstract

The utility model discloses an improved right-angle type quick-closing check valve, which relates to the technical field of check valves and comprises a valve body, a liquid inlet and a liquid outlet are arranged on the valve body, and one end of the liquid outlet is provided with a connector, a valve plate, a reset spring and a limit mechanism. By arranging the limiting mechanism, when the valve body is used, the top end of the movable block is in contact with the movable rod, so that the movable rod has no displaceable space, and the movable rod limits the movement of the valve plate, so that the valve plate cannot cross the liquid outlet, and liquid in the liquid inlet cannot enter the liquid outlet; when a pipeline is connected with the connecting port and the pipeline is in contact with the push block during installation, the movable block moves, and the top of the movable block is separated from the movable rod, so that the movable rod has a displaceable space, the movable rod can be pushed to move when the valve plate is in contact with the movable rod, and the movable rod can be pushed to move conveniently when pipeline connection is not carried out on the liquid outlet. And the liquid cannot flow out from the liquid outlet.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to an improved right-angle quick-closing check valve. Background Art

[0002] A check valve is a valve whose opening and closing parts are circular discs and which blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves, also known as non-return valves, one-way valves, reflux valves or isolation valves, including right-angle check valves, which are equipped with valve plates to block the inner cavity of the check valve. When liquid enters from the liquid inlet, the valve plate is pushed to move, and the valve plate is pushed through the liquid outlet, which squeezes the reset spring, so that the liquid inlet and the liquid outlet are connected. When the liquid inlet is no longer filled with liquid, the valve plate is reset by the elastic force of the reset spring, blocking the inside of the valve body, and preventing the liquid at the liquid outlet from entering the liquid inlet, so as to achieve the effect of rapid closure.

[0003] When the right-angle check valve is used, the pipeline is connected to the liquid inlet and the liquid outlet respectively. However, when the liquid outlet is not connected, the liquid enters the liquid inlet and is discharged from the liquid outlet, which will affect the installation of the liquid outlet. In order to prevent the liquid from flowing out of the liquid outlet when the pipeline is not connected to the liquid outlet, an improved right-angle quick-closing check valve is provided. Utility Model Content

[0004] The utility model aims to provide an improved right-angle quick-closing check valve in order to prevent liquid from flowing out of a liquid outlet when the liquid outlet is not connected to a pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an improved right-angle quick-closing check valve, comprising a valve body, the valve body is provided with a liquid inlet and a liquid outlet, one end of the liquid outlet is provided with a connecting port, the liquid outlet is connected to an external pipeline through the connecting port, the inner cavity of the valve body is slidably connected with a valve plate, the valve plate is used to shield the inner cavity of the valve body, a reset spring is connected between the valve plate and the valve body, the reset spring is used to reset the valve plate, and the movement of the valve plate is limited by a limiting mechanism;

[0006] The limiting mechanism includes a fixed ring, which is fixedly connected to the inner cavity of the connecting port, and the interior of the fixed ring is slidably connected to a movable rod extending to the inner cavity of the valve body, and the interior of the fixed ring is slidably connected to a movable block located on one side of the movable rod, and the outer wall of the movable block is fixedly connected to an elastic sheet, and the interior of the fixed ring is slidably connected to a push block located below the movable block, and the push block extends to the bottom of the fixed ring.

[0007] As a further solution of the utility model: the movable rod is provided with a semicircular surface at one end of the valve body, and the inner wall of the liquid outlet is provided with a sliding groove for the movable rod to slide.

[0008] As a further solution of the utility model: a first inclined surface is arranged at one end of the movable block facing the movable rod, and a flat surface is arranged at the top end of the movable block.

[0009] As a further solution of the utility model: a displacement groove for the movable block to slide is provided inside the fixed ring, and one end of the elastic sheet is in contact with the displacement groove.

[0010] As a further solution of the utility model: the bottom end of the movable block is provided with a second inclined surface, and the top end of the push block contacts the second inclined surface.

[0011] As a further solution of the utility model: an insert rod is fixedly connected to the inner cavity of the connecting port, and an insert hole is opened on the outer wall of the fixing ring.

[0012] As a further solution of the utility model: the insertion rods and the insertion holes are symmetrically arranged in two groups, and the insertion rods are tightly fitted with the insertion holes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By setting a limiting mechanism, when the valve body is in use, the top of the movable block contacts the movable rod, so that the movable rod has no space for displacement, and the movable rod limits the movement of the valve plate, so that the valve plate cannot pass through the liquid outlet, thereby preventing the liquid in the liquid inlet from entering the liquid outlet; when the pipeline is connected to the connecting port, the pipeline contacts the push block during installation, the movable block moves, and the top of the movable block separates from the movable rod, so that the movable rod has space for displacement, so that when the valve plate contacts the movable rod, the movable rod can be pushed to move, so that when the liquid outlet is not connected to the pipeline, the liquid cannot flow out of the liquid outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the valve body of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation of the fixing ring of the utility model;

[0018] Figure 4 It is a cross-sectional view of the fixing ring of the utility model.

[0019] In the figure: 1. valve body; 2. liquid inlet; 3. liquid outlet; 4. connecting port; 5. valve plate; 6. return spring; 7. limit mechanism; 701. fixing ring; 702. movable rod; 703. movable block; 704. elastic sheet; 705. push block; 8. slide groove; 9. plug rod; 10. plug hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figures 1 to 4 In the embodiment of the utility model, an improved right-angle quick-closing check valve includes a valve body 1, a liquid inlet 2 and a liquid outlet 3 are provided on the valve body 1, a connecting port 4 is provided at one end of the liquid outlet 3, the liquid outlet 3 is connected to an external pipeline through the connecting port 4, a valve plate 5 is slidably connected to the inner cavity of the valve body 1, the valve plate 5 is used to block the inner cavity of the valve body 1, a reset spring 6 is connected between the valve plate 5 and the valve body 1, the reset spring 6 is used to reset the valve plate 5, and the movement of the valve plate 5 is limited by a limiting mechanism 7 Operation: The limiting mechanism 7 includes a fixed ring 701, which is fixedly connected to the inner cavity of the connecting port 4, and the interior of the fixed ring 701 is slidably connected to a movable rod 702 extending to the inner cavity of the valve body 1, and the interior of the fixed ring 701 is located on one side of the movable rod 702 and is slidably connected to a movable block 703, and the outer wall of the movable block 703 is fixedly connected to an elastic sheet 704, and the interior of the fixed ring 701 is located below the movable block 703 and is slidably connected to a push block 705, which extends to the bottom of the fixed ring 701.

[0022] In this embodiment: when the valve body 1 is used, the fixing ring 701 is installed in the connecting port 4. At this time, the top of the movable block 703 contacts the movable rod 702, so that the movable rod 702 has no space for displacement. When the valve plate 5 moves, the valve plate 5 contacts the movable rod 702, and the movable rod 702 cannot move, so that the valve plate 5 cannot cross the liquid outlet 3, so that the liquid in the liquid inlet 2 cannot enter the liquid outlet 3; when the pipeline is connected to the connecting port 4, the pipeline contacts the push block 705 during installation, pushing the push block 705 to move, and the push block 705 moves to push the movable block 703 to move, causing extrusion deformation on the elastic sheet 704, and the top of the movable block 703 is separated from the movable rod 702, so that the movable rod 702 has space for displacement, so that when the valve plate 5 contacts the movable rod 702, the movable rod 702 can be pushed to move, so that when the pipeline is not connected to the liquid outlet 3, the liquid cannot flow out of the liquid outlet 3.

[0023] Please refer to Figure 1 and Figure 3 The movable rod 702 is located at one end of the valve body 1 and is provided with a semicircular surface, and the inner wall of the liquid outlet 3 is provided with a sliding groove 8 for the movable rod 702 to slide.

[0024] In this embodiment, when the valve plate 5 is displaced and contacts the movable rod 702 , the valve plate 5 contacts the semicircular surface, pushing the movable rod 702 to slide in the slide groove 8 .

[0025] Please refer to Figure 4 A first inclined surface is arranged at one end of the movable block 703 facing the movable rod 702 , and a flat surface is arranged at the top of the movable block 703 .

[0026] In this embodiment: the plane at the top of the movable block 703 contacts the movable rod 702, so that the movable rod 702 has no space for displacement. When the pipeline is connected to the connecting port 4, the plane of the movable block 703 is separated from the movable rod 702, so that the movable rod 702 has space for displacement.

[0027] Please refer to Figure 4 A displacement groove is provided inside the fixed ring 701 for the movable block 703 to slide, one end of the elastic sheet 704 contacts the displacement groove, a second inclined surface is provided at the bottom end of the movable block 703, and the top end of the push block 705 contacts the second inclined surface.

[0028] In this embodiment, when the pipeline is connected to the connection port 4 , the pipeline contacts the push block 705 during installation, pushing the push block 705 to move, and the push block 705 moves to push the movable block 703 to move, causing extrusion deformation of the elastic sheet 704 .

[0029] Please refer to Figure 2-Figure 4 The inner cavity of the connecting port 4 is fixedly connected with an insertion rod 9, and the outer wall of the fixing ring 701 is provided with a plug hole 10. The insertion rod 9 and the plug hole 10 are symmetrically arranged in two groups, and the insertion rod 9 and the plug hole 10 are tightly fitted.

[0030] In this embodiment: when installing the fixing ring 701, the fixing ring 701 is placed into the connecting port 4, so that the movable rod 702 enters the slide groove 8, and at the same time the insertion rod 9 is inserted into the insertion hole 10, and the insertion rod 9 fits tightly with the insertion hole 10, so that the fixing ring 701 is fixedly installed.

[0031] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An improved right-angle quick-closing check valve, comprising a valve body (1), the valve body (1) being provided with a liquid inlet (2) and a liquid outlet (3), one end of the liquid outlet (3) being provided with a connecting port (4), the liquid outlet (3) being connected to an external pipeline via the connecting port (4), the inner cavity of the valve body (1) being slidably connected with a valve plate (5), the valve plate (5) being used to shield the inner cavity of the valve body (1), a reset spring (6) being connected between the valve plate (5) and the valve body (1), the reset spring (6) being used to reset the valve plate (5), characterized in that: The movement of the valve plate (5) is limited by a limiting mechanism (7); The limiting mechanism (7) comprises a fixed ring (701), wherein the fixed ring (701) is fixedly connected to the inner cavity of the connecting port (4), the interior of the fixed ring (701) is slidably connected to a movable rod (702) extending to the inner cavity of the valve body (1), the interior of the fixed ring (701) is slidably connected to a movable block (703) located on one side of the movable rod (702), the outer wall of the movable block (703) is fixedly connected to an elastic sheet (704), the interior of the fixed ring (701) is located below the movable block (703) and is slidably connected to a push block (705), and the push block (705) extends to the bottom of the fixed ring (701).

2. An improved right-angle quick-closing check valve according to claim 1, characterized in that: The movable rod (702) is provided with a semicircular surface at one end of the valve body (1), and the inner wall of the liquid outlet (3) is provided with a sliding groove (8) for the movable rod (702) to slide.

3. An improved right-angle quick-closing check valve according to claim 1, characterized in that: One end of the movable block (703) facing the movable rod (702) is provided with a first inclined surface, and the top end of the movable block (703) is provided with a flat surface.

4. An improved right-angle quick-closing check valve according to claim 1, characterized in that: A displacement groove for the movable block (703) to slide is provided inside the fixing ring (701), and one end of the elastic sheet (704) is in contact with the displacement groove.

5. The improved right-angle quick-closing check valve according to claim 1 is characterized in that: The bottom end of the movable block (703) is provided with a second inclined surface, and the top end of the push block (705) is in contact with the second inclined surface.

6. An improved right-angle quick-closing check valve according to claim 1, characterized in that: An insertion rod (9) is fixedly connected to the inner cavity of the connection port (4), and an insertion hole (10) is formed on the outer wall of the fixing ring (701).

7. An improved right-angle quick-closing check valve according to claim 6, characterized in that: The insertion rods (9) and the insertion holes (10) are symmetrically arranged in two groups, and the insertion rods (9) and the insertion holes (10) are tightly fitted.

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