Flow-guiding damping slow-closing check valve

Abstract

The utility model discloses a kind of flow-guiding damping slow-closing check valve, it is related to check valve technical field.The utility model includes valve body, water inlet pipe and water outlet pipe are respectively penetrated and fixedly connected with both sides of the valve body, the inside fixedly connected with valve chamber of the valve body, the top of the valve chamber is penetrated and fixedly connected with valve pipe, the side surface of the valve chamber is equipped with through opening, the inside of the valve pipe is provided with slow-closing mechanism;The slow-closing mechanism includes slide cylinder and speed reducer, the inside of the slide cylinder is provided with compression spring, the utility model is provided with slow-closing mechanism, to reach the water pressure drives valve flap to move upwards and open valve chamber, when water flow no longer passes, the speed of valve flap when moving downwards and restoring in the process of valve flap moving downwards and restoring will be slowed down by the cooperation of arc block, telescopic spring, speed reducer and other components, prevent the impact force of speed too fast generation is big to cause damage to the internal structure of valve body.

Description

Technical Field

[0001] This utility model belongs to the field of check valve technology, and in particular relates to a flow-dampening slow-closing check valve. Background Technology

[0002] A check valve is a type of valve that allows the medium to flow in only one direction and prevents flow in the opposite direction. These valves are typically automatic; under the pressure of the fluid flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, the fluid pressure and the weight of the valve disc combine to act on the valve seat, thus cutting off the flow.

[0003] Currently, check valves on the market open their valve discs under the pressure of fluid flowing in one direction. When the valve discs are no longer in use, they move downwards to return to their original position relatively quickly, generating a large impact force that can easily damage the internal structure of the valve body. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a flow-guiding damping slow-closing check valve, which solves the existing problems.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a flow-guiding damping slow-closing check valve, comprising a valve body, with an inlet pipe and an outlet pipe respectively passing through and fixedly connected to both sides of the valve body. A valve chamber is fixedly connected inside the valve body, and a valve pipe is passing through and fixedly connected to the top of the valve chamber. An opening is provided on the side of the valve chamber, and a slow-closing mechanism is provided inside the valve pipe. The slow-closing mechanism includes a slide cylinder and a deceleration block. A compression spring is provided inside the slide cylinder, and a valve disc is slidably connected inside the slide cylinder through the compression spring. A fixing plate is fixedly connected to the top of the valve disc, and a groove is provided on the side of the fixing plate. A telescopic spring is provided inside the groove, and an arc-shaped block is slidably connected inside the groove through the telescopic spring. The deceleration block is fixedly connected to the inner wall of the slide cylinder.

[0007] Furthermore, both the inlet pipe and the outlet pipe are equipped with connecting flanges at the ends furthest from the valve body, which can be used to connect the inlet pipe and the outlet pipe to relevant pipelines.

[0008] Furthermore, in its initial state, the bottom of the valve disc is in contact with the bottom opening inside the valve chamber, preventing water from entering the valve chamber when the bottom of the valve disc is in contact with the bottom inside the valve chamber.

[0009] Furthermore, the arc surface of the arc block faces the top of the fixed plate, and one-third of the arc block protrudes from the groove in the initial state. When the arc block moves with the fixed plate, it will contact the deceleration block.

[0010] Furthermore, the lateral length of the arc-shaped block is less than the lateral depth of the groove, allowing the arc-shaped block to be completely recessed into the groove.

[0011] Furthermore, the deceleration block is generally semi-cylindrical, and the width of the deceleration block in the front-to-back direction is greater than the width of the arc-shaped block in the front-to-back direction. When the straight surface of the arc-shaped block is squeezed against the semi-cylindrical deceleration block made of rubber, a large resistance will be generated.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model has a slow-closing mechanism, which achieves the following: after the water pressure drives the valve disc to move upward to open the valve chamber, when the water flow stops, the valve disc moves downward to return to its original position. The mechanism is slowed down by the cooperation of components such as arc block, telescopic spring, and deceleration block, so as to prevent the large impact force generated by the excessive speed from damaging the internal structure of the valve body.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a three-dimensional sectional view of the slow-closing mechanism structure of this utility model;

[0019] Figure 4 This is a three-dimensional sectional view of the structure of the slide tube of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of the structure at point A in the middle.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Valve body; 2. Inlet pipe; 3. Outlet pipe; 4. Valve chamber; 5. Valve pipe; 6. Port; 7. Slow-closing mechanism; 71. Slide cylinder; 72. Compression spring; 73. Valve disc; 74. Fixing plate; 75. Groove; 76. Telescopic spring; 77. Arc block; 78. Deceleration block. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-5 This utility model is a flow-guiding damping slow-closing check valve, including a valve body 1. An inlet pipe 2 and an outlet pipe 3 are respectively connected through and fixed to both sides of the valve body 1. A valve chamber 4 is fixedly connected inside the valve body 1. A valve pipe 5 is connected through and fixed to the top of the valve chamber 4. An opening 6 is opened on the side of the valve chamber 4. A slow-closing mechanism 7 is provided inside the valve pipe 5. The slow-closing mechanism 7 includes a slide cylinder 71 and a deceleration block 78. A compression spring 72 is provided inside the slide cylinder 71. A valve disc 73 is slidably connected inside the slide cylinder 71 through the compression spring 72. A fixing plate 74 is fixedly connected to the top of the valve disc 73. A groove 75 is opened on the side of the fixing plate 74. A telescopic spring 76 is provided inside the groove 75. An arc-shaped block 77 is slidably connected inside the groove 75 through the telescopic spring 76. The deceleration block 78 is fixedly connected to the inner wall of the slide cylinder 71.

[0025] As shown in the figure, both the inlet pipe 2 and the outlet pipe 3 are equipped with connecting flanges at the ends away from the valve body 1. The connecting flanges can be used to connect the inlet pipe 2 and the outlet pipe 3 to relevant pipelines.

[0026] As shown in the figure, the bottom of valve disc 73 initially abuts against the bottom opening inside valve chamber 4. When the bottom of valve disc 73 abuts against the bottom inside valve chamber 4, water flow cannot enter valve chamber 4.

[0027] As shown in the figure, the arc surface of the arc block 77 faces the top of the fixed plate 74, and one-third of the arc block 77 protrudes from the groove 75 in the initial state. When the arc block 77 moves with the fixed plate 74, it will contact the deceleration block 78.

[0028] As shown in the figure, the horizontal length of the arc-shaped block 77 is less than the horizontal depth of the groove 75, and the arc-shaped block 77 can be completely retracted into the groove 75.

[0029] As shown in the figure, the deceleration block 78 is semi-cylindrical in shape, and the width of the deceleration block 78 in the front-to-back direction is greater than the width of the arc block 77 in the front-to-back direction. When the straight surface of the arc block 77 is squeezed against the semi-cylindrical deceleration block 78 made of rubber, a large resistance will be generated.

[0030] A specific application of this embodiment is as follows: The inlet pipe 2 and outlet pipe 3 are connected to relevant pipelines via a connecting flange. Water flows into the valve body 1 through the inlet pipe 2. At this time, the water pressure causes the valve disc 73 to move upward, opening the valve chamber 4. The compression spring 72 is compressed, and then the water flows through the port 6 and out through the outlet pipe 3. When backflow occurs, the water pressure decreases, and the compression spring 72 rebounds, causing the valve disc 73 to move downward, closing the valve chamber 4, thus achieving a check valve effect. When the valve disc 73 moves upward, the fixing plate 74 moves upward along with the valve disc 73. During this process, the arc surface of the arc block 77 will contact the deceleration block 78. The arc surface of the arc block 77 will be squeezed into the groove 75 and will not generate much resistance with the deceleration block 78. Then, the extension spring 76 will drive the arc block 77 to pop out and return to its original position. When the compression spring 72 rebounds and drives the valve disc 73 to move downward, the straight surface of the arc block 77 will generate greater resistance when it is squeezed with the rubber semi-cylindrical deceleration block 78. This will slow down the speed of the valve disc 73 moving downward and returning to its original position, and prevent the impact force generated by the excessive speed from damaging the internal structure of the valve body 1.

[0031] 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.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A flow-guiding, damped, slow-closing, non-return valve comprising a valve body (1), characterised in that: The valve body (1) has an inlet pipe (2) and an outlet pipe (3) that are respectively connected through and fixed to both sides. The valve body (1) has a valve chamber (4) that is fixedly connected inside. The valve chamber (4) has a valve pipe (5) that is connected through and fixed to the top. The valve chamber (4) has an opening (6) on its side. The valve pipe (5) has a slow-closing mechanism (7) inside. The slow-closing mechanism (7) includes a slide cylinder (71) and a deceleration block (78). A compression spring (72) is provided inside the slide cylinder (71). A valve disc (73) is slidably connected inside the slide cylinder (71) through the compression spring (72). A fixing plate (74) is fixedly connected to the top of the valve disc (73). A groove (75) is provided on the side of the fixing plate (74). A telescopic spring (76) is provided inside the groove (75). An arc-shaped block (77) is slidably connected inside the groove (75) through the telescopic spring (76). The deceleration block (78) is fixedly connected to the inner wall of the slide cylinder (71).

2. The flow-guiding damping slow-closing check valve according to claim 1, characterized in that, Both the inlet pipe (2) and the outlet pipe (3) are equipped with connecting flanges at the ends away from the valve body (1).

3. The flow-guiding damping slow-closing check valve according to claim 2, characterized in that, The bottom of the valve disc (73) initially abuts against the bottom opening inside the valve chamber (4).

4. The flow-guiding damping slow-closing check valve according to claim 3, characterized in that, The arc surface of the arc block (77) faces the top of the fixing plate (74), and one-third of the arc block (77) protrudes from the groove (75) in the initial state.

5. A flow-guiding damping slow-closing check valve according to claim 4, characterized in that, The lateral length of the arc-shaped block (77) is less than the lateral depth of the groove (75).

6. A flow-guiding damping slow-closing check valve according to claim 5, characterized in that, The deceleration block (78) is semi-cylindrical in shape, and the width of the deceleration block (78) in the front-to-back direction is greater than the width of the arc block (77) in the front-to-back direction.

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