Novel pressure limiting valve

Abstract

The utility model provides a novel pressure limiting valve, and belongs to the field of valves. The problems that steam of the pressure cooker is generally directly exhausted through an exhaust hole of a pressure limiting valve of the pressure cooker, the steam is splashed all around, people are easily injured, and exhaust sound is large are solved. The novel pressure-limiting valve comprises a valve seat, a valve body and a valve core for controlling pressure, a valve cavity is arranged in the valve body, a boss with external threads is arranged on the valve seat, the boss and the valve seat are coaxially arranged, a center hole used for being connected with the valve cavity is arranged in the valve seat, internal threads used for being matched with the external threads of the boss are arranged in the valve body, and the valve core is arranged in the valve cavity. A through hole is formed in the middle of the top end of the valve body, the valve element is arranged in the center of the valve cavity and matched with the through hole, a fixing seat used for stabilizing the valve element and preventing the valve element from being sprayed out of the valve body when pressure is too large is arranged on the valve element, the fixing seat is attached to the inner wall of the valve body, and an air outlet hole used for discharging pressure and air is formed in the valve body. The utility model has the advantages of safety and practicability.

Description

Technical Field

[0001] The utility model belongs to the field of valves and relates to a pressure limiting valve, in particular to a novel pressure limiting valve. Background Art

[0002] The pressure limiting valve, also known as the pressure regulating valve or safety valve, is mainly used to protect the pressure control of the hydraulic system. Its main function is to limit the working pressure of the hydraulic system within a certain range to prevent the system components from being damaged due to excessive pressure. The steam of the existing pressure cooker is generally discharged directly through the exhaust hole of the pressure limiting valve of the pressure cooker. The steam splashes around and is easy to hurt people. The exhaust sound is also very loud, and the appearance of the pressure limiting valve used is not very beautiful. Summary of the invention

[0003] The purpose of the utility model is to provide a novel safe and stable pressure limiting valve in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: A new type of pressure limiting valve, including a valve seat, a valve body and a valve core for controlling pressure, wherein the valve body has a valve cavity inside;

[0005] The valve seat is characterized in that a boss with external threads is provided on the valve seat, and the boss and the valve seat are arranged coaxially, a center hole for connecting with the valve cavity is provided in the valve seat, and an internal thread for matching with the external thread of the boss is provided in the valve body;

[0006] A through hole is arranged in the middle of the top of the valve body, and the valve core is arranged in the center of the valve cavity and matched with the through hole;

[0007] The valve core is provided with a fixing seat for stabilizing the valve core to prevent the valve core from being ejected out of the valve body when the pressure is too high, and the fixing seat is in contact with the inner wall of the valve body;

[0008] The valve body is provided with an air outlet for venting pressure and releasing gas, and the air outlet is inclined, and includes a downwardly inclined opening and an upwardly inclined opening, the downwardly inclined opening is arranged on the inner wall of the valve body and matches the valve core, and the upwardly inclined opening is arranged on the outer wall of the valve body;

[0009] The bottom of the valve seat is provided with an air outlet for connecting with the central hole.

[0010] In the above-mentioned novel pressure-limiting valve, a plurality of mounting holes are arranged in an array on the valve seat.

[0011] In the above-mentioned novel pressure-limiting valve, a sealing ring is arranged around the boss to prevent leakage when the valve seat and the valve body are matched.

[0012] In the above-mentioned novel pressure-limiting valve, the valve seat surface is gear-shaped.

[0013] Compared with the prior art, the novel pressure limiting valve does not cause steam to splash around during use, does not injure people, is safe to use, has reduced exhaust sound, reduces noise, has a beautiful appearance, and is safer and more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the novel pressure limiting valve.

[0015] Figure 2 It is a cross-sectional view of the novel pressure limiting valve.

[0016] In the figure, 1. valve seat; 2. valve body; 3. valve core; 4. valve cavity; 5. boss; 6. center hole; 7. internal thread; 8. through hole; 9. fixed seat; 10. air outlet; 11. downward inclined mouth; 12. upward inclined mouth; 13. air outlet; 14. mounting hole; 15. sealing ring. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figure 1 , Figure 2 As shown, the new pressure-limiting valve comprises a valve seat 1, a valve body 2 and a valve core 3 for controlling pressure. The valve body 2 has a valve cavity 4 inside. A boss 5 with an external thread is provided on the valve seat 1, and the boss 5 and the valve seat 1 are arranged in a coaxial manner. The coaxial design facilitates the connection between the valve seat 1 and the valve body 2. A center hole 6 for connecting with the valve cavity 4 is provided in the valve seat 1, and an internal thread 7 for matching with the external thread of the boss 5 is provided in the valve body 2. A through hole 8 is provided in the middle of the top end of the valve body 2, and the valve core 3 is provided in the center of the valve cavity 4 and matches with the through hole 8. A fixing member for stabilizing the valve core 3 to prevent the valve core 3 from being ejected out of the valve body 2 when the pressure is too high is provided on the valve core 3. Seat 9, and the fixed seat 9 is fitted with the inner wall of the valve body 2, the valve body 2 is provided with an air outlet 10 for discharging pressure and exhausting, and the air outlet 10 is inclined, and the air outlet 10 with an inclined angle prevents steam from splashing around and endangering the user, the air outlet 10 includes a downward inclined port 11 and an upward inclined port 12, the downward inclined port 11 is arranged on the inner wall of the valve body 2 and cooperates with the valve core 3, the upward inclined port 12 is arranged on the outer wall of the valve body 2, and the bottom of the valve seat 1 is provided with an air outlet 13 for connecting with the center hole 6. When the pressure is too large, the excess pressure is discharged through the air outlet 13, and the pressure is discharged into the valve cavity 4 through the center hole 6. At this time, the pressure will prop up the valve core 3 to expose the air outlet 10 for discharging pressure.

[0019] To be more specific, a plurality of mounting holes 14 are arranged in an array on the valve seat 1 , and the pressure-limiting valve is fixed through the mounting holes 14 .

[0020] To be more specific, a sealing ring 15 is disposed around the boss 5 to prevent leakage when the valve seat 1 and the valve body 2 are matched, and the sealing performance of the pressure limiting valve is improved by the sealing ring 15.

[0021] In further detail, the valve seat surface is gear-shaped.

[0022] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0023] Although the terms valve seat 1, valve body 2, valve core 3, valve cavity 4, boss 5, center hole 6, internal thread 7, through hole 8, fixed seat 9, air outlet 10, down-tilt port 11, up-tilt port 12, air outlet 13, mounting hole 14, sealing ring 15, etc. are frequently used in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A novel pressure-limiting valve, comprising a valve seat (1), a valve body (2) and a valve core (3) for controlling pressure, wherein the valve body (2) has a valve cavity (4) inside, and is characterized in that: The valve seat (1) is provided with a boss (5) with an external thread, and the boss (5) and the valve seat (1) are arranged coaxially, the valve seat (1) is provided with a center hole (6) for connecting with the valve cavity (4), the valve body (2) is provided with an internal thread (7) for matching with the external thread of the boss (5), a through hole (8) is provided in the middle of the top of the valve body (2), and the valve core (3) is arranged in the center of the valve cavity (4) and matches with the through hole (8), and the valve core (3) is provided with a member for stabilizing the valve core (3) to prevent the valve core (3) from being deformed when the pressure is too high. ) is ejected out of the fixed seat (9) outside the valve body (2), and the fixed seat (9) is in contact with the inner wall of the valve body (2), the valve body (2) is provided with an air outlet (10) for exhausting pressure and releasing air, and the air outlet (10) is inclined, the air outlet (10) includes a downwardly inclined opening (11) and an upwardly inclined opening (12), the downwardly inclined opening (11) is arranged on the inner wall of the valve body (2) and cooperates with the valve core (3), the upwardly inclined opening (12) is arranged on the outer wall of the valve body (2), and the bottom of the valve seat (1) is provided with an air outlet (13) for connecting with the center hole (6).

2. A new type of pressure limiting valve according to claim 1, characterized in that: A plurality of mounting holes (14) are arranged in an array on the valve seat (1).

3. A new type of pressure limiting valve according to claim 1, characterized in that: A sealing ring (15) is arranged around the boss (5) to prevent leakage when the valve seat (1) and the valve body (2) are mated.

4. A new type of pressure limiting valve according to claim 1, characterized in that: The valve seat surface is gear-shaped.

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