Impact-resistant check valve

Abstract

The utility model provides an impact-resistant check valve, which belongs to the technical field of check valves and comprises a valve shell, wherein a plurality of pillars are arranged inside one end of the valve shell, a common buffer ring is arranged on one side of the middle of the pillars, a columnar body of the pillar located between the buffer ring and the valve shell is sleeved with a buffer spring, a common valve core is arranged on the other side of the middle of the pillar, a common connecting ring is arranged at one end of the pillar, and the outer side surface of the connecting ring is arranged on the inner wall of the water inlet of the valve shell; the utility model can improve the stability of the movement of the valve core and reduce the impact of water flow on the valve core.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to an impact-resistant check valve. Background Art

[0002] In industrial and civil fluid control systems, check valves, as a key component, play an irreplaceable role. Their main function is to prevent the backflow of fluid in the pipeline system, ensure the one-way flow of fluid, and thus ensure the normal operation of the system.

[0003] In high-pressure or high-flow rate application scenarios, some check valves with simpler structures are often damaged by water flow impact, which leads to leakage or performance degradation. Specifically, firstly, the valve core is not stable enough, causing its moving trajectory to deviate and become damaged; secondly, the valve core has insufficient buffering capacity, causing the valve core to collide and be damaged during the impact process. Utility Model Content

[0004] In view of this, the utility model provides an impact-resistant check valve, which can improve the stability of valve core movement and reduce the impact of water flow on the valve core.

[0005] In order to solve the above technical problems, the utility model provides an impact-resistant check valve, including a valve housing, a plurality of pillars arranged in an array around the central axis of the valve housing are fixedly connected to the inner wall of one end of the valve housing, a same buffer ring is slidably connected to one side of the middle part of the pillar, the columns of the pillars located between the buffer ring and the valve housing are all sleeved with buffer springs, a same valve core is slidably connected to the other side of the middle part of the pillar, a same connecting ring is fixedly connected to one end of the pillar, the outer side surface of the connecting ring is fixedly connected to the inner wall of the water inlet of the valve housing, the connecting ring, the valve core and the central axis of the valve housing are overlapped, the stability of the movement of the valve core of the check valve is improved, damage or performance degradation caused by impact is effectively prevented, the impact of water flow on the valve core is reduced, and the impact resistance of the check valve is improved.

[0006] A guide column is fixedly connected to one end of the valve core close to the water outlet, a plurality of support plates are fixedly connected to the middle of the water outlet of the valve housing, an end of the support plate away from the water outlet is fixedly connected to the same guide ring, the middle part of the guide column is slidably connected to the guide ring, and the outer diameter of the guide column is equal to the inner diameter of the guide ring; that is, the swing and deviation are reduced, and the movement accuracy of the valve core is improved.

[0007] The guide column is located between the guide ring and the valve core, and a conical spring is provided on the column sleeve; that is, the impact resistance of the check valve is improved.

[0008] One end of the valve core close to the water inlet is fixedly connected with a sealing sleeve, and one end of the connecting ring close to the valve core is fixedly connected with a docking frame; that is, the sealing performance and reliability of the check valve are enhanced.

[0009] The outer side surface of the connecting ring is fixedly connected with a plurality of sealing rings, thereby preventing water leakage.

[0010] The middle part of the valve housing is fixedly connected with two symmetrically arranged connection plates, which improves the convenience of installation.

[0011] A plurality of connection holes arranged in an array around the central axis of the valve housing are provided in the middle of the connection disk, thus realizing a stable connection between the check valve and the pipeline equipment.

[0012] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0013] 1. As the water flows continuously in, the valve core is impacted by the water flow and moves away from the water inlet. The chamfer contacts the conical outer wall of the valve core, reducing the resistance of the valve core when it moves. At the same time, the buffer ring is impacted by the water flow and compresses multiple buffer springs, so that the buffer springs generate buffer force, reducing the impact of the water flow on the valve core, thereby improving the impact resistance of the check valve. At the same time, the conical spring is compressed to generate an inward elastic force, which works together with the elastic force of the buffer spring to further reduce the impact of the water flow on the valve core and improve the impact resistance of the check valve.

[0014] 2. Multiple pillars provide stable support and guidance for the valve core, so that the check valve can maintain a stable position and posture when subjected to a large impact, thereby improving the stability of the check valve core movement and effectively preventing damage or performance degradation caused by impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an impact-resistant check valve of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model enlarged at A;

[0018] Figure 4 It is a schematic diagram of the structure of each part of the utility model;

[0019] Figure 5 It is a schematic diagram of the overall structure of the utility model.

[0020] Description of reference numerals:

[0021] 100, valve housing; 101, pillar; 102, buffer ring; 103, buffer spring; 104, valve core; 105, connecting ring; 106, guide column; 107, support plate; 108, guide ring; 109, conical spring; 110, sealing sleeve; 111, docking frame; 112, sealing ring; 113, connecting plate; 114, connecting hole; DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the following will be combined with the appended drawings of the embodiment of the utility model. Figure 1-5 , the technical scheme of the embodiment of the utility model is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0023] like Figure 1-5 As shown: This embodiment provides an impact-resistant check valve, including a valve housing 100, wherein a plurality of pillars 101 arranged in an array around the central axis of the valve housing 100 are fixedly connected to the inner wall at one end of the valve housing 100, a buffer ring 102 is slidably connected to one side of the middle of the pillar 101, and the columns of the pillar 101 located between the buffer ring 102 and the valve housing 100 are sleeved with buffer springs 103, and a valve core 104 is slidably connected to the other side of the middle of the pillar 101, the valve core 104 is conical, and the opening of the valve core 104 faces the water inlet of the valve housing 100, and the inner wall of the buffer ring 102 is provided with a chamfer, and the angle of the chamfer is consistent with the angle of the outer wall of the valve core 104 close to the buffer ring 102, and one end of the pillar 101 is fixedly connected to the same connecting ring 105, and the outer side surface of the connecting ring 105 is fixedly connected to the inner wall of the water inlet of the valve housing 100, and the connecting ring 105, the valve core 104 and the central axis of the valve housing 100 are arranged to coincide;

[0024] When this check valve is working, water flows into the valve housing 100 through the water inlet. As the water flows continuously, the valve core 104 is impacted by the water flow and moves away from the water inlet. The chamfer contacts the conical outer wall of the valve core 104, reducing the resistance of the valve core 104 when it moves. At the same time, the buffer ring 102 is impacted by the water flow and compresses the buffer spring 103, so that the buffer spring 103 generates a buffer force, reducing the impact of the water flow on the valve core 104, thereby improving the impact resistance of the check valve. When the water flow stops entering, the buffer spring 103 returns to its original state, pushing the buffer ring 102 and the valve core 104 to reset. The conical structure of the valve core 104 prevents the water flow from flowing back, thereby realizing the function of the check valve. The multiple pillars 101 provide stable support and guidance for the valve core 104, so that the check valve can maintain a stable position and posture when it is subjected to a large impact, thereby improving the stability and impact resistance of the check valve, and effectively preventing damage or performance degradation caused by impact.

[0025] Guide column 106 Figure 2 , 3 As shown,

[0026] A guide column 106 is fixedly connected to one end of the valve core 104 near the water outlet, a plurality of support plates 107 arranged in a circular array around the central axis of the valve housing 100 are fixedly connected to the middle of the water outlet of the valve housing 100, a guide ring 108 is fixedly connected to one end of the support plate 107 away from the water outlet, the middle of the guide column 106 is slidably connected to the guide ring 108, the outer diameter of the guide column 106 is equal to the inner diameter of the guide ring 108, the column body of the guide column 106 located between the guide ring 108 and the valve core 104 is sleeved with a conical spring 109, the inner diameter of the end of the conical spring 109 near the valve core 104 is larger than the inner diameter of the end near the guide ring 108;

[0027] When the valve core 104 is opened, the guide column 106 moves together with the valve core 104 in the direction away from the water inlet, and the gap between the guide column 106 and the guide ring 108 gradually decreases, and the conical spring 109 is compressed to generate an inward elastic force, which works together with the elastic force of the buffer spring 103 to further reduce the impact of the water flow on the valve core 104 and improve the impact resistance of the check valve. The support plate 107 provides stable support for the guide ring 108 and also enhances the overall structural strength of the valve housing 100, which can withstand various pressures and impact forces brought by the water flow. At the same time, the conical structure of the conical spring 109 causes the guide column 106 to be subjected to a uniform guiding force during the movement, thereby ensuring the stable movement of the valve core 104, preventing the valve core 104 from swinging and deflecting, and further improving the stability and impact resistance of the check valve.

[0028] Sealing sleeve 110 Figure 3 As shown,

[0029] The end of the valve core 104 close to the water inlet is fixedly connected with a sealing sleeve 110, and the end of the connecting ring 105 close to the valve core 104 is fixedly connected with a docking frame 111. The inner diameter of the sealing sleeve 110 is larger than the outer diameter of the docking frame 111. The central axes of the sealing sleeve 110 and the docking frame 111 are arranged to coincide with each other. The outer side surface of the connecting ring 105 is fixedly connected with a plurality of sealing rings 112 arranged in an array around the central axis of the connecting ring 105.

[0030] When the valve core 104 is reset, the sealing sleeve 110 and the docking frame 111 fit tightly together to form a sealing barrier, effectively preventing water from leaking from the gap between the valve core 104 and the connecting ring 105, thereby improving the sealing performance of the check valve. At the same time, the provision of the sealing ring 112 further enhances the sealing effect between the connecting ring 105 and the valve housing 100, effectively preventing water from leaking, and improving the reliability and durability of the check valve.

[0031] Connecting plate 113 Figure 1 As shown,

[0032] Two symmetrically arranged connection plates 113 are fixedly connected to the middle of the valve housing 100, and a plurality of connection holes 114 arranged in an array around the central axis of the valve housing 100 are opened in the middle of the connection plates 113;

[0033] The connection plate 113 facilitates the connection of the check valve to other pipeline equipment, and fasteners such as bolts can be easily installed through the connection hole 114 to achieve a stable connection between the check valve and the pipeline equipment.

[0034] Working principle:

[0035] When the valve core is opened, the gap between the guide column and the guide ring is reduced, and the conical spring is compressed to generate elastic force, which further reduces the impact of the water flow on the valve core. The support plate provides stable support for the guide ring and enhances the structural strength of the valve housing. When the valve core is reset, the sealing sleeve fits tightly against the docking frame, and the sealing ring enhances the sealing effect between the connecting ring and the valve housing to prevent water leakage. The connecting plate facilitates the connection of the check valve with other pipeline equipment, and fasteners are installed through the connecting holes to achieve stable connection.

[0036] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An impact-resistant check valve, characterized in that: The invention comprises a valve housing (100), wherein a plurality of pillars (101) are arranged inside one end of the valve housing (100), a common buffer ring (102) is arranged on one side of the middle of the pillars (101), a column of the pillars (101) located between the buffer ring (102) and the valve housing (100) is sleeved with a buffer spring (103), a common valve core (104) is arranged on the other side of the middle of the pillars (101), and a common connecting ring (105) is arranged at one end of the pillars (101), and the outer side surface of the connecting ring (105) is arranged on the inner wall of the water inlet of the valve housing (100).

2. An impact-resistant check valve according to claim 1, characterized in that: A guide column (106) is provided at one end of the valve core (104), a plurality of support plates (107) are provided in the middle of the water outlet of the valve housing (100), a guide ring (108) is provided at one end of the support plate (107), and the middle of the guide column (106) is arranged in the middle of the guide ring (108).

3. An impact-resistant check valve according to claim 2, characterized in that: The guide column (106) is located between the guide ring (108) and the valve core (104), and a conical spring (109) is sleeved on the column.

4. The impact-resistant check valve according to claim 1, characterized in that: A sealing sleeve (110) is provided at the other end of the valve core (104), and a docking frame (111) is provided at one end of the connecting ring (105); the inner diameter of the sealing sleeve (110) is greater than the outer diameter of the docking frame (111).

5. The impact-resistant check valve according to claim 1, characterized in that: A plurality of sealing rings (112) are provided on the outer side surface of the connecting ring (105).

6. The impact-resistant check valve according to claim 1, characterized in that: A plurality of connection plates (113) are arranged in the middle of the valve housing (100).

7. An impact-resistant check valve according to claim 6, characterized in that: A plurality of connection holes (114) are provided in the middle of the connection plate (113).

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