A new safety valve

Abstract

The utility model provides a novel safety valve belongs to the valve field, it has solved the problem that the existing safety valve spring is easy to elastic fatigue. The novel safety valve, including the upper cover, the top, the valve body, the valve seat, the valve that cooperates with the valve seat seal, this novel safety valve still includes the valve rod, the upper magnetic component, the lower magnetic component and is used for adjusting the initial relative position between the upper magnetic component and the lower magnetic component to set the opening pressure of the adjusting mechanism of safety valve, the one end of valve rod is connected with valve, its lower magnetic component is connected in the valve rod middle end through the fixed base, the upper magnetic component is located in the upper cover top through the connecting seat, the other end of valve rod is active and passes out the upper magnetic component and the connecting seat, the upper magnetic component and the lower magnetic component are set in the way of the same name magnetic pole opposition, the magnetic force of mutual repulsion between the two, its magnetic force can pass through the drive valve rod and press the valve tightly on the valve seat to keep the normally closed state. The utility model has the advantages of long service life.

Description

Technical Field

[0001] This utility model belongs to the field of valves, and relates to a safety valve, and more particularly to a novel safety valve. Background Technology

[0002] Traditional spring-loaded safety valves generally use mechanical springs to provide sealing force. These springs are prone to performance degradation due to fatigue, corrosion, or long-term compression, resulting in drifting opening pressure, poor sealing, or inaccurate reset. At the same time, their regulating mechanisms have problems such as thread friction, jamming, and wear, resulting in low pressure setting accuracy and poor repeatability. They require frequent calibration and maintenance, and their reliability and lifespan are difficult to meet the application requirements of high precision and long-term stable operation. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a novel safety valve to solve these issues.

[0004] The purpose of this utility model can be achieved through the following technical solution: a novel safety valve, including an upper cover, a top cover, a valve body, a valve seat, and a valve that seals with the valve seat, characterized in that the novel safety valve further includes a valve stem, an upper magnetic component, a lower magnetic component, and an adjustment mechanism for adjusting the initial relative position between the upper magnetic component and the lower magnetic component to set the opening pressure of the safety valve; One end of the valve stem is connected to the valve, and its lower magnetic component is connected to the middle end of the valve stem through a fixed seat. The upper magnetic component is located on the top of the upper cover through a connecting seat. The other end of the valve stem movably passes through the upper magnetic component and the connecting seat. The upper and lower magnetic components are arranged with their corresponding magnetic poles facing each other, and a repulsive magnetic force is generated between them. This magnetic force can drive the valve stem to press the valve onto the valve seat to maintain a normally closed state. When the force exerted by the fluid pressure on the valve is greater than the magnetic force, the valve stem drives the lower magnetic component to move upward, and the valve disengages from the valve seat to open and release pressure.

[0005] In the aforementioned novel safety valve, the adjusting mechanism includes an adjusting bolt, an upper adjusting wheel, and a lower adjusting wheel. The upper adjusting bolt is engaged with the outside of the valve via internal and external threads. The upper and lower adjusting wheels are snap-fitted and locked to the adjusting bolt. By axially moving the adjusting bolt, the upper and lower adjusting wheels can be rotated, thereby driving the valve and valve stem to rise and fall, thus achieving the adjustment of the magnetic force.

[0006] In the aforementioned novel safety valve, the upper adjusting wheel is used for fine adjustment, and the lower adjusting wheel is used for coarse adjustment, together achieving precise setting of the opening pressure.

[0007] In the aforementioned novel safety valve, the upper cover is disposed on the outside of the upper end of the valve body, and the top cover is sealed on the upper cover.

[0008] In the aforementioned novel safety valve, both the upper and lower magnetic components are permanent magnets.

[0009] In the aforementioned novel safety valve, the valve stem passes through the top of the valve to ensure that the valve opens and closes vertically.

[0010] Compared with existing technologies, this new type of safety valve successfully solves the inherent shortcomings of traditional spring-loaded safety valves in terms of reliability, lifespan, adjustment accuracy, and stability by using the repulsive force of permanent magnets. It achieves overpressure protection more accurately, reliably, and with a longer lifespan, and is particularly suitable for industrial applications with stringent pressure control requirements, high maintenance costs, or the need for long-term stable operation. Attached Figure Description

[0011] Figure 1 This is a half-sectional structural diagram of the new safety valve.

[0012] In the diagram, 1. Upper cover; 2. Top cover; 3. Valve body; 4. Valve seat; 5. Valve; 6. Valve stem; 7. Upper magnetic component; 8. Lower magnetic component; 9. Fixed seat; 10. Connecting seat; 11. Adjusting bolt; 12. Upper adjusting wheel; 13. Lower adjusting wheel. Detailed Implementation

[0013] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1 As shown, this novel safety valve includes an upper cover 1, a top cover 2, a valve body 3, a valve seat 4, and a valve 5 that seals with the valve seat 4. The new safety valve also includes a valve stem 6, an upper magnetic element 7, a lower magnetic element 8, and an adjusting mechanism for adjusting the initial relative position between the upper magnetic element 7 and the lower magnetic element 8 to set the opening pressure of the safety valve. One end of the valve stem 6 is connected to the valve 5, and the lower magnetic element 8 is connected to the middle end of the valve stem 6 via a fixing seat 9. The upper magnetic element 7 is mounted on the top of the upper cover 1 via a connecting seat 10. The other end of the valve stem 6 extends through the upper magnetic element 7 and the connecting seat 10. The upper magnetic element 7 and the lower magnetic element 8 are arranged with their corresponding magnetic poles facing each other, generating a repulsive magnetic force. This magnetic force can drive the valve stem 6 to press the valve 5 against the valve seat 4 to maintain a normally closed state. When the fluid pressure acting on the valve 5 is greater than the magnetic force, the valve stem 6 drives the lower magnetic element 8 to move towards the upper magnetic element 7, causing the valve 5 to disengage from the valve seat 4 and open to release pressure.

[0015] The adjusting mechanism includes an adjusting bolt 11, an upper adjusting wheel 12, and a lower adjusting wheel 13. The upper adjusting bolt 11 is threaded onto the outside of the valve 5. The upper adjusting wheel 12 and the lower adjusting wheel 13 are locked to the adjusting bolt 11 by a snap-fit ​​connection. Axial movement of the adjusting bolt 11 rotates the upper adjusting wheel 12 and the lower adjusting wheel 13, thereby raising and lowering the valve 5 and the valve stem 6 to adjust the magnetic force. The upper adjusting wheel 12 is used for fine-tuning, and the lower adjusting wheel 13 is used for coarse-tuning, together achieving precise setting of the opening pressure. The upper cover 1 is fitted over the upper part of the valve body 3, and its top cover 2 is encapsulated on top of the upper cover 1. Both the upper magnetic component 7 and the lower magnetic component 8 are permanent magnets. The valve stem 6 passes above the valve 5, ensuring that the valve 5 opens and closes vertically.

[0016] The working principle of this new type of safety valve is based on the repulsive magnetic force generated by the opposing magnetic poles of the upper and lower magnetic components 8. This force drives the valve 5 to press against the valve seat 4 via the valve stem 6, maintaining a normally closed state. When the fluid pressure acting on the valve 5 overcomes this magnetic force, the valve stem 6 drives the lower magnetic component 8 to move upward, opening the valve 5 to release pressure. After the pressure drops, the magnetic force pushes the valve 5 back to its original position and closes, thus achieving automatic pressure protection. By adjusting the initial distance between the two magnetic components through the adjustment mechanism, the opening pressure of the safety valve can be precisely set.

[0017] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0018] Although this document uses terms such as "etc." extensively, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A novel safety valve, comprising an upper cover (1), a top cover (2), a valve body (3), a valve seat (4), and a valve (5) that seals in conjunction with the valve seat (4), characterized in that, The new safety valve also includes a valve stem (6), an upper magnetic component (7), a lower magnetic component (8), and an adjustment mechanism for adjusting the initial relative position between the upper magnetic component (7) and the lower magnetic component (8) to set the opening pressure of the safety valve; One end of the valve stem (6) is connected to the valve (5), and the lower magnetic component (8) is connected to the middle end of the valve stem (6) through the fixing seat (10). The upper magnetic component (7) is located on the top of the upper cover (1) through the connecting seat. The other end of the valve stem (6) moves through the upper magnetic component (7) and the connecting seat. The upper magnetic component (7) and the lower magnetic component (8) are arranged with their magnetic poles facing each other, and a magnetic force repulses each other between them. The magnetic force can drive the valve stem (6) to press the valve (5) against the valve seat (4) to maintain the normally closed state. When the force exerted by the fluid pressure on the valve (5) is greater than the magnetic force, the valve stem (6) drives the lower magnetic component (8) to move upward to the upper magnetic component (7), and the valve (5) disengages from the valve seat (4) to open and release pressure.

2. The novel safety valve according to claim 1, characterized in that, The adjustment mechanism includes an adjustment bolt (11), an upper adjustment wheel (12), and a lower adjustment wheel (13). The upper adjustment bolt (11) is connected to the valve (5) via internal and external threads. The upper adjustment wheel (12) and the lower adjustment wheel (13) are locked to the adjustment bolt (11) by snap-fit. By moving the adjustment bolt (11) axially, the upper adjustment wheel (12) and the lower adjustment wheel (13) can be rotated, thereby driving the valve (5) and valve stem (6) to rise and fall, so as to realize the adjustment of the magnetic force.

3. A novel safety valve according to claim 2, characterized in that, The upper adjustment wheel (12) is used for fine adjustment, and the lower adjustment wheel (13) is used for coarse adjustment, together achieving precise setting of the opening pressure.

4. A novel safety valve according to claim 1, characterized in that, The upper cover (1) is placed over the upper part of the valve body (3), and the top cover (2) is encapsulated on the upper cover (1).

5. A novel safety valve according to claim 1, characterized in that, Both the upper magnetic component (7) and the lower magnetic component (8) are permanent magnets.

6. A novel safety valve according to claim 1, characterized in that, The valve stem (6) passes above the valve (5) to ensure that the valve (5) opens and closes vertically.

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