Check valve capable of being installed in any direction

Abstract

The utility model relates to the technical field of valves, in particular to a check valve capable of being installed in any direction, which comprises a valve body, a flow channel and a valve seat are arranged in the valve body, the inner wall of the valve body is rotatably connected with a valve clack through a rotating shaft, the valve clack and the valve seat are matched in the flow channel in a sealing mode, and a reset assembly is further arranged on the inner wall of the valve body. The reset assembly is connected with the valve clack, and the reset assembly is used for helping the valve clack to reset to the position matched with the valve seat in a sealing mode, the reset assembly is used for providing reset pressure for the valve clack, the valve clack can also be closed without depending on self-gravity, and therefore the valve clack is not limited to horizontal installation and can be installed at any position of various pipelines. The method can be applied to more scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a check valve that can be installed in any direction. Background Art

[0002] A check valve is an automatic valve with a circular disc that operates by its own weight and the pressure of the medium to prevent backflow. It is also known as a non-return valve, one-way valve, reflux valve, or isolation valve. The disc's movement is categorized as either lift or swing. The medium flows in from the inlet (lower side) and out from the outlet (upper side). When the inlet pressure exceeds the sum of the disc's weight and its flow resistance, the valve opens. Conversely, when the pressure is lower, the valve closes in the event of backflow. A swing check valve has an inclined disc that rotates about its axis, and its operating principle is similar to that of a lift check valve. Check valves are often used as bottom valves in pumping systems to prevent backflow.

[0003] The check valve of the prior art relies on the medium to open, and when there is no medium at the inlet end, it relies on the self-weight of the valve disc to close, so it can only be installed horizontally, which has the disadvantage of large installation limitations. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a check valve that can be installed in any direction. The present invention provides a resetting pressure for the valve disc through a resetting component, so that the valve disc can be closed not only by its own gravity, but also by any position of various pipelines. Therefore, it is not limited to horizontal installation and can be installed in any position of various pipelines, and can be applied to more scenarios.

[0005] The technical solution adopted by the present utility model is as follows: a check valve that can be installed in any direction includes a valve body, a flow channel and a valve seat are provided in the valve body, the inner wall of the valve body is rotatably connected to a valve disc via a rotating shaft, the valve disc and the valve seat are sealed and matched in the flow channel, and a reset component is also provided on the inner wall of the valve body, the reset component is connected to the valve disc, and the reset component is used to help the valve disc reset to a position that is sealed and matched with the valve seat.

[0006] A connecting block is provided at the end of the valve disc away from the valve seat, and the reset assembly includes a pin shaft, an adjusting rod and a spring. The pin shaft is arranged on the inner wall of the valve body, and the adjusting rod is rotatably connected to the pin shaft. The end of the adjusting rod away from the pin shaft passes through the connecting block, and the spring is sleeved on the outside of the adjusting rod and abuts against the connecting block. When the valve disc rotates away from the valve seat, the spring is compressed.

[0007] There are a plurality of springs.

[0008] The connecting block is provided with a through hole for the adjusting rod to pass through, and the inner diameter of the through hole is larger than the diameter of the adjusting rod.

[0009] The valve flap is detachably connected to the connecting block, and the valve flap is connected to the rotating shaft through the connecting block. A connecting rod is also connected between the rotating shaft and the connecting block. The valve flap and the connecting rod are simultaneously connected to the connecting block through bolts.

[0010] The flow channel is used to circulate the medium. When the pressure of the medium is less than the elastic force of the spring, the valve flap is in a closed state. When the pressure of the medium is greater than the elastic force of the fully compressed spring, the valve flap is in a fully open state. When the pressure of the medium is less than the elastic force of the fully compressed spring, the valve flap is in a semi-open state.

[0011] The valve flap is made of elastic material or metal material.

[0012] The valve body is connected to the pipeline through a flange or butt welding.

[0013] The beneficial effects of the present invention are as follows: the present invention provides a resetting pressure for the valve flap through the resetting component, so that the valve flap can be closed not only by relying on its own gravity, and is not limited to horizontal installation. It can be installed at any position of various pipelines, can be applied to more scenarios, and has the advantage of a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0015] Figure 1 This is a cross-sectional schematic diagram of a check valve that can be installed in any direction according to the present invention;

[0016] Figure 2 It is a cross-sectional schematic diagram of the valve disc in the present invention when it is open;

[0017] Figure 3 This is a schematic diagram of the structure of the exterior of the valve body of the utility model;

[0018] Figure 4 This is a structural diagram of the utility model from another perspective;

[0019] In the figure, 1-valve body, 2-flow channel, 3-valve seat, 4-rotating shaft, 5-valve disc, 6-connecting block, 7-pin shaft, 8-adjusting rod, 9-spring, 10-through hole, 11-connecting rod, and 12-bolt. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0022] The directional and positional terms used in this invention, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are used solely to refer to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0023] like Figures 1 to 4 As shown, an embodiment of the present invention is a check valve that can be installed in any direction, including a valve body 1, wherein a flow channel 2 and a valve seat 3 are provided in the valve body 1, and a valve flap 5 is rotatably connected to the inner wall of the valve body 1 via a rotating shaft 4, and the valve flap 5 and the valve seat 3 are sealed in the flow channel 2. A reset component is also provided on the inner wall of the valve body 1, and the reset component is connected to the valve flap 5. The reset component is used to help the valve flap 5 reset to a position that is sealed with the valve seat 3.

[0024] The beneficial effects of such a setting are as follows: the utility model provides a resetting pressure for the valve flap through the resetting component, so that the valve flap can be closed not only by its own gravity, and is therefore not limited to horizontal installation, but can be installed at any position in various pipelines, can be applied to more scenarios, and has the advantage of a wide range of applicability.

[0025] It is further provided that the end of the valve disc 5 away from the valve seat 3 is provided with a connecting block 6, the reset assembly includes a pin shaft 7, an adjusting rod 8 and a spring 9, the pin shaft 7 is provided on the inner wall of the valve body 1, the adjusting rod 8 is rotatably connected to the pin shaft 7, the end of the adjusting rod 8 away from the pin shaft 7 passes through the connecting block 6, the spring 9 is sleeved on the outside of the adjusting rod 8, and the spring 9 abuts against the connecting block 6, and the spring 9 is compressed when the valve disc 5 rotates away from the valve seat 3.

[0026] The beneficial effects of such a setting are as follows: the reset assembly consists of a pin shaft, an adjusting rod and a spring, and the preload force of the spring provides the pressure for resetting the valve disc. The connection mode of the adjusting rod passing through the connecting block enables the adjusting rod and the connecting block to slide relative to each other. When the connecting block rotates with the valve disc, the adjusting rod can also rotate with it and expand and contract relative to the end face of the connecting block, and the spring sleeved on the outside of the adjusting rod will also be compressed or expanded with the rotation. Because the connecting block rotates around the rotating shaft and the adjusting rod rotates around the pin shaft, the rotating shaft and the pin shaft are not coaxial, and the rotation path of the connecting block is different from the rotation path of the adjusting rod. When the valve disc rotates away from the valve seat, the spring is compressed, and when the spring opens and resets, it drives the valve disc to rotate toward the valve seat, and the valve disc is closed by the force of the spring. This reset structure has the advantages of being simple and stable.

[0027] It is further provided that the number of the springs 9 is several.

[0028] The beneficial effects of this arrangement are as follows: the preload force of the total springs can be controlled by outer sleeves of multiple springs to adapt to high-pressure environments, and the valve disc can also open and close normally.

[0029] It is further provided that the connecting block 6 is provided with a through hole 10 for the adjusting rod 8 to pass through, and the inner diameter of the through hole 10 is larger than the diameter of the adjusting rod 8 .

[0030] The beneficial effects of this arrangement are as follows: the diameter of the through hole is larger than the diameter of the adjusting rod, which makes the adjusting rod rotate more smoothly, reduces the friction between the inner wall of the through hole and the adjusting rod, and the spring and the connecting block still maintain contact.

[0031] It is further provided that the valve flap 5 is detachably connected to the connecting block 6, the valve flap 5 is connected to the rotating shaft 4 through the connecting block 6, a connecting rod 11 is also connected between the rotating shaft 4 and the connecting block 6, and the valve flap 5 and the connecting rod 11 are simultaneously connected to the connecting block 6 through a bolt 12.

[0032] The beneficial effects of such a setting are as follows: the connecting block is connected to the rotating shaft through a connecting rod, and adopts a detachable connection structure. The valve disc and the connecting block are also detachably connected, which is convenient for disassembly and assembly.

[0033] It is further configured that the flow channel 2 is used to circulate the medium, and when the pressure of the medium is less than the elastic force of the spring 9, the valve flap 5 is in a closed state; when the pressure of the medium is greater than the elastic force of the fully compressed spring 9, the valve flap 5 is in a fully open state; when the pressure of the medium is less than the elastic force of the fully compressed spring 9, the valve flap 5 is in a semi-open state.

[0034] The beneficial effects of this arrangement are as follows: controlling the preload of the spring can also control the opening degree of the valve disc, thereby controlling the flow rate of the medium passing through. The force of the medium is not greater than the force of the spring, and the spring can also play a certain auxiliary sealing role.

[0035] It is further provided that the valve flap 5 is made of elastic material or metal material.

[0036] The beneficial effects of this arrangement are as follows: the valve disc can be applied to more sealing scenarios with the valve seat, such as soft sealing and hard sealing.

[0037] It is further provided that the valve body 1 is connected to the pipeline via a flange or butt welding.

[0038] The beneficial effects of such a setting are as follows: the pipe can be connected in any of a variety of connection methods such as flange connection or butt welding, which is more convenient for installation and has a wide range of applications.

[0039] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A check valve that can be installed in any direction, comprising a valve body (1), wherein a flow channel (2) and a valve seat (3) are provided in the valve body (1), wherein the inner wall of the valve body (1) is rotatably connected to a valve flap (5) via a rotating shaft (4), wherein the valve flap (5) and the valve seat (3) are sealed and fitted in the flow channel (2), and wherein: The inner wall of the valve body (1) is further provided with a reset component, which is connected to the valve disc (5) and is used to help the valve disc (5) reset to a position where it seals with the valve seat (3).

2. A check valve that can be installed in any direction according to claim 1, characterized in that: The end of the valve disc (5) away from the valve seat (3) is provided with a connecting block (6), and the reset assembly includes a pin shaft (7), an adjusting rod (8) and a spring (9), wherein the pin shaft (7) is provided on the inner wall of the valve body (1), and the adjusting rod (8) is rotatably connected to the pin shaft (7), and the end of the adjusting rod (8) away from the pin shaft (7) passes through the connecting block (6), and the spring (9) is sheathed on the outside of the adjusting rod (8), and the spring (9) abuts against the connecting block (6), and when the valve disc (5) rotates away from the valve seat (3), the spring (9) is compressed.

3. A check valve that can be installed in any direction according to claim 2, characterized in that: The springs (9) are multiple in number.

4. A check valve that can be installed in any direction according to claim 2, characterized in that: The connecting block (6) is provided with a through hole (10) for the adjusting rod (8) to pass through, and the inner diameter of the through hole (10) is larger than the diameter of the adjusting rod (8).

5. The check valve that can be installed in any direction according to claim 2, characterized in that: The valve flap (5) is detachably connected to the connecting block (6), the valve flap (5) is connected to the rotating shaft (4) via the connecting block (6), a connecting rod (11) is further connected between the rotating shaft (4) and the connecting block (6), and the valve flap (5) and the connecting rod (11) are simultaneously connected to the connecting block (6) via a bolt member (12).

6. The check valve that can be installed in any direction according to claim 2, characterized in that: The flow channel (2) is used for circulating a medium. When the pressure of the medium is less than the elastic force of the spring (9), the valve flap (5) is in a closed state. When the pressure of the medium is greater than the elastic force of the fully compressed spring (9), the valve flap (5) is in a fully open state. When the pressure of the medium is less than the elastic force of the fully compressed spring (9), the valve flap (5) is in a semi-open state.

7. The check valve that can be installed in any direction according to claim 1, characterized in that: The valve flap (5) is made of elastic material or metal material.

8. The check valve that can be installed in any direction according to claim 1, characterized in that: The valve body (1) is connected to the pipeline via a flange or butt welding.

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