Valve block slow closing mechanism and check valve

Abstract

The utility model relates to the technical field of organic fertilizer storage, and provides a valve block slow-closing mechanism and a check valve, the valve block slow-closing mechanism comprises a main body assembly, the main body assembly comprises a valve body, a fixed plate connected in the valve body, a fixed frame connected on the fixed plate, and a valve rod movably connected on the fixed frame; the adjusting assembly comprises a moving plate movably connected to the valve rod, a rack connected to the lower portion of the moving plate, a gear rotationally connected to the rack, a rotating shaft connected to the gear and a rotary knob connected to the rotating shaft. The rotating shaft is rotationally connected to the fixing frame and the valve body. By means of the technical scheme, the problems that in the prior art, when water flows, a valve plate of an existing check valve is driven to be opened under the pressure of the water, the water flows pass through, after the water flows stop, the valve plate is slowly closed under the action of a spring to achieve the slow closing function, but the closing speed and force of the existing valve plate cannot be adjusted according to the actual working condition, and the valve plate cannot be closed slowly are solved. And the use effect is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, and in particular to a valve plate slow-closing mechanism and a check valve. Background Art

[0002] A check valve is a valve with a circular disc as the opening and closing part. It blocks the backflow of the medium by its own weight and the pressure of the medium. It belongs to the category of automatic valves and is also called non-return valve, one-way valve, reflux valve or isolation valve. Check valves are often used as bottom valves of pumping devices to prevent the backflow of water.

[0003] However, the existing technology has the following deficiencies: when water flows, the existing check valve drives the valve plate to open under the pressure of the water flow, and the water flows through; when the water flow stops, the valve plate slowly closes under the action of the spring to achieve a slow closing function, but the closing speed and force of the existing valve plate cannot be adjusted according to actual working conditions, which affects the use effect. Utility Model Content

[0004] The utility model proposes a valve plate slow-closing mechanism and a check valve to solve the problem that in the prior art proposed in the above background technology, when water flows, the existing check valve drives the valve plate to open under the pressure of the water flow, and the water flows through; when the water flow stops, the valve plate slowly closes under the action of a spring to achieve the slow-closing function, but the closing speed and force of the existing valve plate cannot be adjusted according to actual working conditions, which affects the use effect.

[0005] The utility model is a valve plate slow closing mechanism, comprising:

[0006] A main body component, the main body component comprising a valve body, a fixing plate connected to the valve body, a fixing frame connected to the fixing plate, and a valve stem movably connected to the fixing frame;

[0007] An adjusting assembly, the adjusting assembly comprising a moving plate movably connected to the valve stem, a rack connected below the moving plate, a gear rotatably connected to the rack, a rotating shaft connected to the gear, and a knob connected to the rotating shaft;

[0008] The rotating shaft is rotatably connected to the fixing frame and the valve body.

[0009] Furthermore, the regulating assembly further comprises a second through hole formed on the movable plate, and the valve stem is movably connected in the second through hole;

[0010] Specifically, the second through hole is provided to facilitate the movement of the movable plate along the valve stem.

[0011] Furthermore, the adjustment assembly further comprises a limiting rod connected to the movable plate, a limiting groove provided on the fixed frame, and the limiting rod is movably connected in the limiting groove;

[0012] Specifically, a limiting groove and a limiting rod are provided to support the movable plate and also to limit the movable plate, thereby preventing the rack below the movable plate from slipping out of the gear.

[0013] Furthermore, the main body assembly further comprises a first through hole formed on the fixing frame, and the valve stem is movably connected in the first through hole;

[0014] Specifically, the first through hole is provided to facilitate the movement of the valve stem, and the valve stem moves in the first through hole and the second through hole, and drives the valve plate to open and close at the same time.

[0015] Furthermore, the main body assembly also includes a valve plate screwed onto the valve stem, and a spring connected between the valve plate and the moving plate;

[0016] Specifically, when water flows, the valve plate presses the spring to contract, connecting the water inlet pipe and the water outlet pipe, and the water flow can pass normally. When the water flow stops, the water pressure slowly decreases, and under the action of the spring, the valve plate is driven to slowly close.

[0017] A check valve, comprising the above-mentioned valve plate slow closing mechanism, further comprising:

[0018] The sealing assembly comprises an arc-shaped rubber pad hinged on the valve body, a connecting block connected to the valve stem and the arc-shaped rubber pad, and a telescopic connecting rod rotatably connected between the connecting blocks.

[0019] Furthermore, there are four groups of sealing components, which are symmetrically distributed on the valve stem in a ring shape;

[0020] Specifically, the four groups of arc-shaped rubber pads in the four groups of sealing components form a circular sealing ring, which can seal the interface between the water outlet pipe and the valve body.

[0021] Furthermore, the main body assembly also includes a water inlet pipe and a water outlet pipe respectively connected to both sides of the valve body, a splicing flange connected to the water inlet pipe, the water outlet pipe and the valve body, and bolts connected to the splicing flange;

[0022] Specifically, the water inlet pipe, the water outlet pipe and the valve body are fixed together by splicing flanges and bolts, the structure is simple, and the disassembly and assembly are convenient. The water flows in from the water inlet pipe, passes through the valve body, and then flows out from the water outlet pipe.

[0023] Furthermore, the arc-shaped rubber pad is located on one side of the water outlet pipe;

[0024] Specifically, the arc-shaped rubber pad is located on one side of the water outlet pipe, so as to facilitate further sealing of one side of the water outlet pipe after the water flow stops.

[0025] The working principle and beneficial effects of the utility model are:

[0026] 1. The utility model, through the setting of the adjustment component, turns the knob, can drive the shaft to rotate, and then drives the gear to rotate, the gear rotates, drives the rack to move, and then drives the moving plate to move along the valve stem, and can adjust the compression degree of the spring between the moving plate and the valve plate, so as to adjust the speed and strength of the valve plate closing.

[0027] 2. Based on the beneficial effect 1, the limit rod and limit groove are provided to support and limit the movable plate and the rack.

[0028] 3. The utility model provides a sealing assembly, when water flows normally, the valve plate drives the valve stem to move toward the side of the water outlet pipe, which can drive the telescopic connecting rod on the connecting block to rotate, and drive the arc-shaped rubber pad to rotate without affecting the flow of water. When the water flow stops, the valve stem moves in the opposite direction, driving the arc-shaped rubber pad to close, thereby further playing a sealing role.

[0029] In order to adjust the speed and strength of the valve plate closing in the slow closing mechanism, the knob can be turned to drive the shaft to rotate, and then the gear can be driven to rotate. The gear rotates, drives the rack to move, and then drives the moving plate to move along the valve stem. When the moving plate moves, the limit rod moves in the limit groove, and the compression degree of the spring between the moving plate and the valve plate can be adjusted, so as to adjust the speed and strength of the valve plate closing. When the water flows, the valve plate drives the valve stem to move toward the side of the water outlet pipe, which can drive the telescopic connecting rod on the connecting block to rotate, and drives the arc rubber pad to rotate, without affecting the normal flow of water. When the water flow stops, the valve stem moves in the opposite direction, driving the arc rubber pad to close, further playing a sealing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the valve body of the utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the fixing frame of the utility model;

[0034] Figure 4 This is a partial structural diagram of the adjustment component of the utility model;

[0035] Figure 5 This is a schematic diagram of the sealing component structure of the utility model.

[0036] In the figure: 10, water inlet pipe; 11, water outlet pipe; 12, valve body; 13, splicing flange; 14, bolt; 15, fixing frame; 150, fixing plate; 151, first through hole; 16, valve stem; 17, valve plate; 18, spring; 20, knob; 21, rotating shaft; 22, gear; 23, rack; 24, moving plate; 240, second through hole; 25, limiting rod; 26, limiting groove; 30, connecting block; 31, telescopic connecting rod; 32, arc-shaped rubber pad. DETAILED DESCRIPTION

[0037] The following will be combined with 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 of 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.

[0038] like Figure 1-Figure 4 As shown, this embodiment provides a valve plate slow closing mechanism, including:

[0039] A main body component, the main body component includes a valve body 12, a fixed plate 150 connected to the valve body 12, a fixed frame 15 connected to the fixed plate 150, a valve stem 16 movably connected to the fixed frame 15, a first through hole 151 opened on the fixed frame 15, and the valve stem 16 is movably connected in the first through hole 151, a valve plate 17 screwed on the valve stem 16, and a spring 18 connected between the valve plate 17 and the movable plate 24;

[0040] An adjusting assembly, the adjusting assembly comprising a moving plate 24 movably connected to the valve stem 16, a rack 23 connected below the moving plate 24, a gear 22 rotatably connected to the rack 23, a rotating shaft 21 connected to the gear 22, a knob 20 connected to the rotating shaft 21, a second through hole 240 provided on the moving plate 24, the valve stem 16 movably connected in the second through hole 240, a limiting rod 25 connected to the moving plate 24, a limiting groove 26 provided on the fixing frame 15, and the limiting rod 25 movably connected in the limiting groove 26;

[0041] The rotating shaft 21 is rotatably connected to the fixing frame 15 and the valve body 12 .

[0042] When using:

[0043] The knob 20 is turned to drive the shaft 21 to rotate, and then the gear 22 is driven to rotate. The gear 22 rotates, drives the rack 23 to move, and then drives the moving plate 24 to move along the valve stem 16. When the moving plate 24 moves, the limiting rod 25 moves in the limiting groove 26;

[0044] In this step, the compression degree of the spring 18 between the movable plate 24 and the valve plate 17 can be adjusted, thereby adjusting the closing speed and force of the valve plate 17.

[0045] Example 2

[0046] like Figure 5 As shown, this embodiment provides a check valve, including the valve plate slow closing mechanism mentioned above,

[0047] The main body assembly includes the above-mentioned main body assembly, a water inlet pipe 10 and a water outlet pipe 11 respectively connected to both sides of the valve body 12, a splicing flange 13 connected to the water inlet pipe 10, the water outlet pipe 11 and the valve body 12, and a bolt 14 connected to the splicing flange 13;

[0048] A sealing assembly, the sealing assembly comprising an arc-shaped rubber pad 32 hinged on the valve body 12, a connecting block 30 connected to the valve stem 16 and the arc-shaped rubber pad 32, and a telescopic connecting rod 31 rotatably connected between the connecting blocks 30;

[0049] The arc-shaped rubber pad 32 is located on one side of the water outlet pipe 11 .

[0050] When using:

[0051] When water flows, the valve plate 17 drives the valve stem 16 to move toward the side of the water outlet pipe 11, which can drive the telescopic connecting rod 31 on the connecting block 30 to rotate, and drive the arc-shaped rubber pad 32 to rotate without affecting the normal flow of water. When the water flow stops, the valve stem 16 moves in the opposite direction, driving the arc-shaped rubber pad 32 to close;

[0052] This step can further play a sealing role when the valve plate 17 is closed.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve plate slow closing mechanism, characterized in that: include: A main body component, the main body component comprising a valve body (12), a fixing plate (150) connected to the valve body (12), a fixing frame (15) connected to the fixing plate (150), and a valve stem (16) movably connected to the fixing frame (15); An adjusting assembly, the adjusting assembly comprising a moving plate (24) movably connected to the valve stem (16), a rack (23) connected below the moving plate (24), a gear (22) rotatably connected to the rack (23), a rotating shaft (21) connected to the gear (22), and a knob (20) connected to the rotating shaft (21); The rotating shaft (21) is rotatably connected to the fixing frame (15) and the valve body (12).

2. A valve plate slow closing mechanism according to claim 1, characterized in that: The regulating assembly further comprises a second through hole (240) formed on the movable plate (24), and the valve stem (16) is movably connected in the second through hole (240).

3. A valve plate slow closing mechanism according to claim 1, characterized in that: The adjustment assembly further comprises a limiting rod (25) connected to the movable plate (24), a limiting groove (26) provided on the fixed frame (15), and the limiting rod (25) is movably connected in the limiting groove (26).

4. A valve plate slow closing mechanism according to claim 1, characterized in that: The main body component also includes a first through hole (151) formed on the fixing frame (15), and the valve stem (16) is movably connected in the first through hole (151).

5. A valve plate slow closing mechanism according to claim 1, characterized in that: The main body component also includes a valve plate (17) screwed onto the valve stem (16), and a spring (18) connected between the valve plate (17) and the moving plate (24).

6. A check valve, characterized in that: The valve plate slow closing mechanism comprises the valve plate slow closing mechanism according to any one of claims 1 to 5, and further comprises: A sealing assembly comprises an arc-shaped rubber pad (32) hinged on a valve body (12), a connecting block (30) connected to a valve stem (16) and the arc-shaped rubber pad (32), and a telescopic connecting rod (31) rotatably connected between the connecting blocks (30).

7. A check valve according to claim 6, characterized in that: There are four groups of sealing components, which are symmetrically distributed on the valve stem (16) in a ring shape.

8. A check valve according to claim 6, characterized in that: The main body assembly further comprises a water inlet pipe (10) and a water outlet pipe (11) respectively connected to both sides of the valve body (12), a splicing flange (13) connected to the water inlet pipe (10), the water outlet pipe (11) and the valve body (12), and a bolt (14) connected to the splicing flange (13).

9. A check valve according to claim 6, characterized in that: The arc-shaped rubber pad (32) is located on one side of the water outlet pipe (11).

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