Pressure release valve with integral magnetic shield

Abstract

The pressure release valve comprises a shell and a fixing sleeve arranged on the shell, an installation cavity is formed in the shell, an electromagnetic coil assembly is arranged in the installation cavity, the magnetic isolation sleeve is inserted in the installation cavity, the magnetic isolation sleeve is connected between the shell and the fixing sleeve in an abutting mode and isolates the installation cavity, and the electromagnetic coil assembly is arranged in the magnetic isolation sleeve. A movable valve element is arranged on the magnetism isolating sleeve in a sliding mode, and the end of the movable valve element is connected with a sealing piece.

Description

Technical Field

[0001] This utility model relates to the field of pressure relief valve technology, specifically to a pressure relief valve with an integral magnetic shielding sleeve. Background Technology

[0002] Pressure relief valves are widely used in hydraulic, pneumatic and other systems. They can be used to control the pressure inside pipelines and prevent excessive pressure from damaging equipment. They play an important role in ensuring safe and stable operation in fluid transportation systems in industrial production, braking systems in automobiles, and some mechanical devices that require precise pressure control.

[0003] The existing pressure relief valves are based on the control principle of electromagnetic force driving the valve core to move, combined with mechanical spring reset, to achieve rapid pressure relief or pressure regulation. However, there is a certain gap between the valve core and the electromagnetic structure of the existing pressure relief valve. If a gap occurs between the shell and the installation part, it will cause gas leakage, which will not only reduce the system operating efficiency, but may also cause safety hazards, seriously affecting the stable operation and safe use of the equipment. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a pressure relief valve with an integral magnetic shielding sleeve.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A pressure relief valve with an integral magnetic shielding sleeve includes a housing and a fixed sleeve disposed on the housing. The housing forms an installation cavity, an electromagnetic coil assembly is disposed in the installation cavity, and a magnetic shielding sleeve is inserted into the installation cavity. The magnetic shielding sleeve abuts between the housing and the fixed sleeve and isolates the installation cavity. A movable valve core is slidably disposed on the magnetic shielding sleeve, and a sealing element is connected to the end of the movable valve core.

[0007] Preferably, the magnetic shielding sleeve has a radially extending first extension portion and an axially extending second extension portion on the first extension portion. The first extension portion is mounted on the outer shell, the fixing sleeve is pressed onto the second extension portion, and a sealing guide assembly is abutted between the second extension portion and the fixing sleeve. Through the above improvements, the sealing performance of the connection between the magnetic shielding sleeve and the fixing sleeve is increased by using the sealing guide assembly.

[0008] Preferably, the fixing sleeve has a plug-in protrusion, and the outer shell has a plug-in groove for the plug-in protrusion to be inserted. The plug-in protrusion is provided with a first sealing ring, and the first sealing ring abuts against the plug-in groove. Through the above improvements, the plug-in groove and the plug-in protrusion can be used to fix the magnetic shielding sleeve, so as to ensure the reliability of the magnetic shielding sleeve installation. In addition, the first sealing ring on the plug-in protrusion abuts against the plug-in groove to ensure the sealing of the connection between the fixing sleeve and the outer shell.

[0009] Preferably, the sealing guide assembly includes a first sealing ring disposed on the magnetic shielding sleeve and a guide ring disposed on the first sealing ring, with the fixed sleeve pressed onto the guide ring. The guide ring has a guide edge formed on it, and the guide edge is arranged around the outer periphery of the seal. Through the above improvements, the guide ring guides the seal, improving the stability of the seal during the sliding process. Furthermore, the magnetic shielding sleeve is provided with a first sealing ring, and the fixed sleeve is pressed onto the guide ring to ensure the sealing performance of the connection between the fixed sleeve and the magnetic shielding sleeve. The guide edge guides the seal, significantly improving the stability of the seal during the sliding process.

[0010] Preferably, the magnetic shielding sleeve is provided with an elastic element, which abuts against the sealing element so that the movable valve core always has a tendency to extend out of the magnetic shielding sleeve. The magnetic shielding sleeve is provided with a sleeve protrusion, and the elastic element is sleeved on the sleeve protrusion. Through the above improvements, the elastic element is sleeved on the sleeve protrusion, with one end of the elastic element abutting against the magnetic shielding sleeve and the other end abutting against the sealing element, so as to ensure the stability of the sealing element during the sliding process.

[0011] Preferably, the end of the seal is formed with a sealing abutment protrusion. Through the above improvement, the sealing abutment protrusion abuts against the pipeline to ensure sealing.

[0012] Preferably, the magnetic shielding sleeve has a positioning protrusion inside, and the bottom of the movable valve core has a positioning groove. When the electromagnetic coil assembly is energized, the positioning protrusion is placed in the positioning groove. With the above improvements, when the electromagnetic coil assembly is energized, the movable valve core will be attracted to the magnetic shielding sleeve by overcoming the action of the elastic element, and the positioning protrusion will be placed in the positioning groove to ensure the stability of the movable valve core.

[0013] Preferably, the outer casing has a sealing groove, and a second sealing ring is embedded in the sealing groove. With the above improvements, when the pressure relief valve is installed, the second sealing ring can abut against the pipeline, thereby greatly improving the sealing performance of the connection between the pressure relief valve and the pipeline.

[0014] Preferably, a second sealing ring is provided around the outer periphery of the magnetic shielding sleeve, and the second sealing ring abuts against the electromagnetic coil assembly. Through the above improvements, the sealing performance of the connection between the shielding sleeve and the electromagnetic coil assembly is greatly improved by utilizing the cooperation between the second sealing ring and the electromagnetic coil assembly.

[0015] Preferably, a mounting base is provided inside the mounting cavity, and a mounting groove is formed on the mounting base, with the bottom of the magnetic shielding sleeve inserted into the mounting groove. Through the above improvements, the stability of the magnetic shielding sleeve installation is greatly improved.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] An installation cavity is provided inside the outer casing, and a fixing sleeve is provided on the outer casing. An electromagnetic coil assembly is provided inside the installation cavity, and a magnetic shielding sleeve is inserted into the installation cavity. The magnetic shielding sleeve abuts between the outer casing and the fixing sleeve and isolates the installation cavity. A movable valve core is slidably mounted on the magnetic shielding sleeve, and a sealing element is connected to the end of the movable valve core. The movement of the movable valve core is controlled by energizing or de-energizing the electromagnetic coil assembly. The magnetic shielding sleeve seals the installation cavity inside the outer casing to prevent air leakage, thereby improving the system's operating efficiency and stability. Furthermore, the magnetic shielding sleeve can prevent the magnetic field from spreading to unnecessary areas, ensuring that the magnetic lines of force act on the valve core in a concentrated manner, thus improving the transmission efficiency of electromagnetic force. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] In the diagram: 1. Outer shell; 2. Mounting cavity; 3. Electromagnetic coil assembly; 4. Magnetic shielding sleeve; 5. Movable valve core; 6. Seal; 7. Elastic element; 8. Fixed sleeve; 9. Sealing guide assembly; 1.1. Insertion protrusion; 1.2. Insertion groove; 1.3. First sealing ring; 1.4. First sealing ring; 1.5. Guide ring; 1.6. Guide edge; 1.7. Sleeve protrusion; 1.8. Sealing abutment protrusion; 2.1. Positioning protrusion; 2.2. Positioning groove; 2.3. Sealing groove; 2.4. Second sealing ring; 2.5. Second sealing ring; 2.6. Mounting base; 2.7. Mounting groove; 3.1. First extension part; 3.2. Second extension part; Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0023] like Figure 1-2As shown, a pressure relief valve with an integral magnetic shielding sleeve includes a housing 1 and a fixing sleeve 8 disposed on the housing 1. The housing 1 forms an installation cavity 2, and an electromagnetic coil assembly 3 is disposed in the installation cavity 2. A magnetic shielding sleeve 4 is inserted into the installation cavity 2, forming a sealed sliding space. The magnetic shielding sleeve 4 abuts between the housing 1 and the fixing sleeve 8 and isolates the installation cavity 2. A movable valve core 5 is slidably disposed in the magnetic shielding sleeve 4, and a sealing element 6 is connected to the end of the movable valve core 5. The magnetic shielding sleeve 4 seals the installation cavity 2 inside the housing 1 to prevent air leakage. Furthermore, the magnetic shielding sleeve 4 can prevent the magnetic field from spreading to unnecessary areas, ensuring that the magnetic lines of force act on the valve core in a concentrated manner, thereby improving the transmission efficiency of electromagnetic force.

[0024] Specifically, the electromagnetic coil assembly 3 has an energized state and an de-energized state. When the electromagnetic coil assembly 3 is energized, the movable valve core 5 is retracted into the magnetic shielding sleeve 4. When the electromagnetic coil assembly 3 is de-energized, the elastic element 7 drives the movable valve core 5 to extend out of the magnetic shielding sleeve 4. The movement of the movable valve core 5 is controlled by the energization or de-energization of the electromagnetic coil assembly 3 to achieve the pressure relief function.

[0025] Preferably, the magnetic shielding sleeve 4 is usually made of non-magnetic material (such as copper, stainless steel or engineering plastic) to isolate or guide the magnetic circuit of the electromagnet. As a barrier between the electromagnetic coil assembly 3 and the movable valve core 5, the magnetic shielding sleeve 4 can not only increase the integrity of the valve body structure, but also insulate heat and provide electrical insulation.

[0026] like Figure 1-2 As shown, as a further explanation of the embodiment of the magnetic shielding sleeve 4, the magnetic shielding sleeve 4 has a radially extending first extension portion 3.1 and an axially extending second extension portion 3.2 on the first extension portion 3.1. The first extension portion 3.1 is mounted on the outer shell 1, and the fixing sleeve 8 is pressed on the second extension portion 3.2. A sealing guide component 9 abuts between the second extension portion 3.2 and the fixing sleeve 8. The sealing guide component 9 ensures the sealing of the mating part between the fixing sleeve 8 and the magnetic shielding sleeve 4.

[0027] Furthermore, a fixing sleeve 8 for fixing the magnetic shielding sleeve 4 is inserted into the outer shell 1. The fixing sleeve 8 has a plugging protrusion 1.1 and the outer shell 1 has a plugging groove 1.2 for the plugging protrusion 1.1 to be inserted. The plugging protrusion 1.1 and the plugging groove 1.2 cooperate to fix the fixing sleeve 8 on the outer shell 1 and fix the magnetic shielding sleeve 4 to ensure the reliability of the installation of the magnetic shielding sleeve 4.

[0028] The magnetic shielding sleeve 4 forms a sealed sliding space, and the movable valve core 5 is set in the sliding space. Gas can enter the magnetic shielding sleeve 4, but the sealing guide assembly 9 prevents gas from entering from the mating part of the fixed sleeve 8 and the magnetic shielding sleeve 4. At the same time, the insertion protrusion 1.1 and the insertion groove 1.2 cooperate to prevent gas from entering from the mating part of the fixed sleeve 8 and the outer shell 1, so as to ensure the reliability of the seal of the mounting cavity 2.

[0029] Specifically, a first sealing ring 1.3 is provided on the insertion protrusion 1.1, and the first sealing ring 1.3 abuts against the insertion groove 1.2 to ensure the sealing of the connection between the fixing sleeve 8 and the outer shell 1.

[0030] Furthermore, the sealing guide assembly 9 includes a first sealing ring 1.4 disposed on the magnetic shielding sleeve 4, and a guide ring 1.5 disposed on the first sealing ring 1.4. The fixing sleeve 8 is pressed onto the guide ring 1.5, and the sealing element 6 passes through the guide ring 1.5. The guide ring 1.5 can be used to guide the sealing element 6, thereby improving the stability of the sealing element 6 during the sliding process. The magnetic shielding sleeve 4 is provided with the first sealing ring 1.4, and the fixing sleeve 8 is pressed onto the guide ring 1.5 to ensure the sealing performance of the connection between the fixing sleeve 8 and the magnetic shielding sleeve 4.

[0031] In addition, a guide edge 1.6 is formed on the guide ring 1.5, and the guide edge 1.6 is arranged around the outer periphery of the seal 6. The guide edge 1.6 is used to guide the seal 6, which greatly improves the stability of the seal 6 during the sliding process.

[0032] Preferably, a mounting base 2.6 is provided inside the mounting cavity 2, and a mounting groove 2.7 is formed on the mounting base 2.6. The bottom of the magnetic shielding sleeve 4 is inserted into the mounting groove 2.7, which greatly improves the stability of the installation of the magnetic shielding sleeve 4.

[0033] Preferably, the magnetic shielding sleeve 4 has a positioning protrusion 2.1 inside, and the bottom of the movable valve core 5 has a positioning groove 2.2. When the electromagnetic coil assembly 3 is energized, the movable valve core 5 will be attracted to the magnetic shielding sleeve 4 under the action of the elastic element 7, and the positioning protrusion 2.1 will be placed in the positioning groove 2.2 to ensure the stability of the movable valve core 5.

[0034] like Figure 1-2 As shown, in some other embodiments, a second sealing ring 2.5 is provided around the outer periphery of the magnetic shielding sleeve 4, and the second sealing ring 2.5 abuts against the electromagnetic coil assembly 3. By using the cooperation between the second sealing ring 2.5 and the electromagnetic coil assembly 3, the sealing performance of the connection between the shielding sleeve and the electromagnetic coil assembly 3 is greatly improved.

[0035] like Figure 1-2As shown, as a further explanation of the embodiment of the sealing element 6, an elastic element 7 is provided on the magnetic shielding sleeve 4. The elastic element 7 abuts against the sealing element 6 so that the movable valve core 5 always has a tendency to extend out of the magnetic shielding sleeve 4. The magnetic shielding sleeve 4 is provided with a sleeve protrusion 1.7. The elastic element 7 is sleeved on the sleeve protrusion 1.7. One end of the elastic element 7 abuts against the magnetic shielding sleeve 4, and the other end abuts against the sealing element 6 to ensure the stability of the sealing element 6 during the sliding process.

[0036] Furthermore, the end of the seal 6 is formed with a sealing abutment protrusion 1.8, which abuts against the pipeline to ensure a tight seal.

[0037] In addition, a sealing groove 2.3 is formed on the outer shell 1, and a second sealing ring 2.4 is embedded in the sealing groove 2.3. When the pressure relief valve is installed, the second sealing ring 2.4 can abut against the pipeline, thereby greatly improving the sealing performance of the connection between the pressure relief valve and the pipeline.

[0038] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A pressure relief valve with an integral magnetic barrier, characterized by, The utility model provides a solenoid valve, including shell (1) and the fixed sleeve (8) of setting on shell (1), install the cavity (2) in shell (1) constitutes, the electromagnetic coil assembly (3) is arranged in install the cavity (2), and the install the cavity (2) is inserted with the magnetic separation sleeve (4), the magnetic separation sleeve (4) is abutted between shell (1) and fixed sleeve (8), and insulates install the cavity (2), the movable spool (5) is slidably arranged in the magnetic separation sleeve (4), and the movable spool (5) end is connected with sealing element (6).

2. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The magnetic separation sleeve (4) has a radially extending first extension site (3.1), and an axially extending second extension site (3.2) on the first extension site (3.1), the first extension site (3.1) is arranged on the shell (1), the fixed sleeve (8) is pressed on the second extension site (3.2), and the second extension site (3.2) is abutted with the sealing guide assembly (9) between the fixed sleeve (8).

3. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The fixed sleeve (8) constitutes a plug-in protrusion (1.1), the shell (1) constitutes a plug-in slot (1.2) for accommodating the plug-in protrusion (1.1), the plug-in protrusion (1.1) is provided with a first sealing ring (1.3), and the first sealing ring (1.3) abuts the plug-in slot (1.2).

4. The pressure relief valve with integral magnetic barrier sleeve of claim 2, wherein, The sealing guide assembly (9) includes a first sealing ring (1.4) arranged on the magnetic separation sleeve (4) and a guide ring (1.5) arranged on the first sealing ring (1.4), and the fixed sleeve (8) is pressed on the guide ring (1.5), the guide ring (1.5) is formed with a guide edge (1.6), and the guide edge (1.6) is arranged on the outer periphery of the sealing element (6).

5. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The magnetic separation sleeve (4) is provided with an elastic element (7) abutting the sealing element (6), so that the movable spool (5) always has a tendency to extend out of the magnetic separation sleeve (4), and the magnetic separation sleeve (4) constitutes a sleeve protrusion (1.7), and the elastic element (7) is sleeved on the sleeve protrusion (1.7).

6. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The end of the sealing element (6) is formed with a sealing abutting protrusion (1.8).

7. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The magnetic separation sleeve (4) constitutes a positioning protrusion (2.1), and the bottom of the movable spool (5) is formed with a positioning groove (2.2), when the electromagnetic coil assembly (3) is in an energized state, the positioning protrusion (2.1) is accommodated in the positioning groove (2.2).

8. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The shell (1) constitutes a sealing groove (2.3), and the second sealing ring (2.4) is embedded in the sealing groove (2.3).

9. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The outer periphery of the magnetic separation sleeve (4) is sleeved with a second sealing ring (2.5), and the second sealing ring (2.5) abuts the electromagnetic coil assembly (3).

10. The pressure relief valve with integral magnetic barrier sleeve of claim 1, wherein, The installation cavity (2) is provided with a mounting seat (2.6), and the mounting seat (2.6) constitutes a mounting groove (2.7), and the bottom of the magnetic separation sleeve (4) is inserted into the mounting groove (2.7).

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