Sleeve type annular sealing axial flow check valve
By designing a sleeve-type annular seal axial flow check valve and utilizing the combined structure of the annular valve disc and the guide tube and the spring seat hole, the problem of slow backflow prevention of the existing axial flow check valve is solved, and rapid closing and impact reduction are achieved to meet the needs of different flow conditions.
Patent Information
- Application Number
- CN202511063401.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-10-17
AI Technical Summary
The existing axial flow check valve is relatively slow in preventing backflow when the medium flows in the reverse direction.
A sleeve-type annular seal axial flow check valve is designed. It adopts a combined structure of an annular valve disc and a guide tube. The spring seat hole and spring are used to achieve rapid closing, reduce the vibration and impact of the valve disc, and form a flow channel through the connection of the nozzle, bolts and guide tube to control the direction of the fluid.
It can quickly prevent backflow when the medium flows in the opposite direction, reduce shock and vibration, protect equipment from damage, and adapt to on-site adjustments for different flow requirements.
Smart Images
Figure CN120799151A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of check valve, in particular to a sleeve type ring seal axial flow check valve. BACKGROUND
[0002] The axial flow check valve is generally used for gas and liquid medium check valve, such as used in gas and liquid pipeline, the existing axial flow check valve is slow in preventing reverse flow when the medium reverses flow.
[0003] Therefore, it is necessary to design a sleeve type ring seal axial flow check valve which can quickly respond to prevent reverse flow. SUMMARY
[0004] The technical problem solved by the present application is that the existing axial flow check valve is slow in preventing reverse flow when the medium reverses flow.
[0005] To solve the above technical problems, one technical scheme adopted by the present application is to provide a sleeve type ring seal axial flow check valve, which comprises a valve body, a nozzle is arranged at the inlet end of the valve body, a rib plate is fixedly connected to the inlet end of the valve body, the nozzle is connected with the valve body through the rib plate, a fluid channel is formed between the inner surface of the valve body and the outer surface of the nozzle, a bolt is threadedly connected to the axial extension end of the nozzle, a flow guide cylinder is arranged between the bolt and the axial extension end of the nozzle, the flow guide cylinder is fixedly installed with the nozzle through the bolt, and an annular valve clack is sleeved on the nozzle.
[0006] A cylinder is arranged on the annular valve clack, a valve clack mounting cylinder is arranged on the flow guide cylinder, and the valve clack mounting cylinder is slidingly connected to the inside of the cylinder.
[0007] A plurality of spring seat holes are arranged on the opposite surfaces of the annular valve clack and the flow guide cylinder, and springs are arranged between the spring seat holes.
[0008] The spring seat holes are arranged at the outer ring of the annular valve clack and the flow guide cylinder.
[0009] A gasket is arranged between the bolt and the nozzle.
[0010] The beneficial effects of the present application are as follows:
[0011] By using the annular valve clack, the weight of the annular valve clack is lighter, when the medium suddenly stops flowing and starts to flow reversely, the valve clack can be quickly pushed to the closed position by the spring, and the impact can be reduced; the springs arranged at the outer ring of the annular valve clack and the flow guide cylinder can reduce the vibration of the valve clack as much as possible, even if the valve is operated outside the specified flow condition, it is affected by the turbulent and fluctuating fluid to limit the risk of self damage caused by such oscillation. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 Fig. 2 is a sectional view of the axial flow check valve of the present application when closed;
[0013] Figure 2 Fig. 3 is a sectional view of the axial flow check valve of the present application when open;
[0014] Figure 3 Fig. 4 is a sectional view of the valve body of the present application;
[0015] Figure 4 Fig. 5 is a sectional view of the annular valve disc of the present application;
[0016] Figure 5 Fig. 6 is a sectional view of the flow guide cylinder of the present application.
[0017] In the figure: 1, valve body; 2, nozzle; 3, rib plate; 4, flow guide cylinder; 5, annular valve disc; 6, cylinder body; 7, spring seat hole; 8, spring; 9, bolt; 10, gasket; 11, valve disc mounting cylinder. DETAILED DESCRIPTION
[0018] The preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application can be more clearly defined.
[0019] Please refer to Figures 1-5 The present application relates to a sleeve type annular sealing axial flow check valve for gas and liquid medium check valves, such as for gas and liquid pipelines, to automatically stop reverse flow as quickly as possible without any actuator, thereby preventing problems such as water hammer, damaging equipment, and mixing of liquids and gases.
[0020] The faster the valve closes when reverse flow begins, the smaller the impact when the fluid that has begun to flow in reverse is suddenly stopped.
[0021] The axial flow check valve comprises a valve body 1, an inlet end of the valve body 1 is provided with a nozzle 2, the inlet end of the valve body 1 is fixedly connected with a rib plate 3, the nozzle 2 is connected with the valve body 1 through the rib plate 3, an inner surface of the valve body 1 and an outer surface of the nozzle 2 form a fluid passage, an axially extending end of the nozzle 2 is threadedly connected with a bolt 9, a flow guide cylinder 4 is arranged between the axially extending end of the nozzle 2 and the bolt 9, the flow guide cylinder 4 is fixedly installed with the nozzle 2 through the bolt 9, and an annular valve disc 5 is sleeved on the nozzle 2.
[0022] The annular valve disc 5 is provided with a cylinder body 6, the flow guide cylinder 4 is provided with a valve disc mounting cylinder 11, and the valve disc mounting cylinder 11 is slidingly connected to the inside of the cylinder body 6.
[0023] A plurality of spring seat holes 7 are formed on opposite surfaces of the annular valve disc 5 and the flow guide cylinder 4, and springs 8 are arranged between the spring seat holes 7.
[0024] A spring seat hole 7 is provided in the outer rim of the flow guide cylinder 4 and the annular valve disc 5.
[0025] A gasket 10 is provided between the bolt 9 and the nozzle 2.
[0026] The exterior of the nozzle 2 and the interior of the valve body 1 together form an annular flow passage which, in the open position, becomes a first flow passage defined between the inner surface of the valve body 1 and the outer surfaces of the flow guide cylinder 4 and the annular valve disc 5, and a second flow passage defined by the outer surface of the nozzle 2, the inner surfaces of the flow guide cylinder 4 and the annular valve disc 5 and the outer surface of the cylinder 6. In the event of a loss of normal flow, the annular valve disc 5 will be urged in an upstream direction away from contact with the flow guide cylinder 4 and into contact with the valve body 1, thereby preventing backflow.
[0027] If required, the distance between the upstream surface of the flow guide cylinder 4 and the interior of the valve body 1 can be lengthened or shortened by changing the thickness of the gasket 10 and the length of the spring 8 and bolt 9, with the result that the travel of the valve can be lengthened or shortened to suit different flow requirements. This modification can be easily carried out in the field without the need to return the valve to the factory.
[0028] The above description is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, based on the content of the specification and drawings, are also included in the patent protection scope of the present application.
Claims
1. A sleeve-type annular seal axial flow check valve, characterized in that: The axial flow check valve comprises a valve body (1), the inlet end of the valve body (1) is provided with a nozzle (2), the inlet end of the valve body (1) is fixedly connected to a rib plate (3), the nozzle (2) is connected to the valve body (1) via the rib plate (3), the inner surface of the valve body (1) and the outer surface of the nozzle (2) form a fluid channel, the axial extension end of the nozzle (2) is threadedly connected to a bolt (9), a guide tube (4) is provided between the bolt (9) and the axial extension end of the nozzle (2), the guide tube (4) is fixedly installed with the nozzle (2) via the bolt (9), and an annular valve disc (5) is sleeved on the nozzle (2).
2. The sleeve-type annular seal axial flow check valve according to claim 1, characterized in that: The annular valve disc (5) is provided with a cylinder (6), the guide cylinder (4) is provided with a valve disc mounting cylinder (11), and the valve disc mounting cylinder (11) is slidably connected to the interior of the cylinder (6).
3. The sleeve-type annular seal axial flow check valve according to claim 1, characterized in that: A plurality of spring seat holes (7) are provided on the opposite surfaces of the annular valve flap (5) and the guide tube (4), and springs (8) are provided between the spring seat holes (7).
4. The sleeve-type annular seal axial flow check valve according to claim 3, characterized in that: The spring seat hole (7) is arranged on the outer ring of the annular valve disc (5) and the guide tube (4).
5. The sleeve-type annular seal axial flow check valve according to claim 1, characterized in that: A gasket (10) is provided between the bolt (9) and the nozzle (2).