Electromagnetic shielding cover

Abstract

The utility model relates to the technical field of oiling machines, and discloses an electromagnetic shielding cover which comprises an anti-magnetic cover and a fixing part, the anti-magnetic cover can be arranged on the outer side of an electromagnetic valve from top to bottom in a covering mode, the fixing part can fix the anti-magnetic cover to the electromagnetic valve, and a cover body of the anti-magnetic cover is made of a magnetic conductive material. The electromagnetic valve has the effect of preventing the electromagnetic valve from being controlled by an external magnet.

Description

Technical Field

[0001] The present application relates to the technical field of fuel dispensers, and in particular to an electromagnetic shielding cover. Background Art

[0002] Gas station is mainly used to refuel cars. As the main energy supply station for cars, the safety of gas station operation is particularly important.

[0003] To automate the refueling process, conventional solenoid valves are typically switched on and off to control the start and stop of refueling. Specifically, solenoid valves use electromagnetic force to control the movement of a valve core, thereby starting and stopping refueling. These solenoid valves are widely used in various refueling equipment, effectively enabling automated control and improving refueling efficiency and convenience.

[0004] In actual use, due to the working characteristics of the solenoid valve, when the solenoid valve is in the de-energized state, applying a magnet to the top of the solenoid valve coil can still cause the solenoid valve to open. This is exploited by some criminals who use external magnets to steal oil. Utility Model Content

[0005] In order to prevent the solenoid valve from being controlled by an external magnet, the present application provides an electromagnetic shielding cover.

[0006] This application provides an electromagnetic shielding cover, which adopts the following technical solutions:

[0007] An electromagnetic shielding cover comprises an anti-magnetic cover and a fixing part. The anti-magnetic cover can be arranged on the outside of an electromagnetic valve from top to bottom. The fixing part can fix the anti-magnetic cover on the electromagnetic valve. The cover body of the anti-magnetic cover is made of magnetic conductive material.

[0008] By adopting the above technical solution, an anti-magnetic cover made of magnetic conductive material is set on the outside of the solenoid valve, which can shield and block most of the magnetic field, thereby effectively shielding the interference of external magnets on the solenoid valve and reducing the possibility of illegal refueling.

[0009] Optionally, a connecting column is provided at the upper end of the solenoid valve, the anti-magnetic cover abuts against the connecting column, and a gap is formed between the anti-magnetic cover and the solenoid valve, and the connecting column is made of anti-magnetic material.

[0010] By adopting the above technical solution, when the magnet is placed on the anti-magnetic cover, the design of the gap can increase the distance between the magnet and the solenoid valve, thereby reducing the impact of the magnet on the solenoid valve and improving the protection effect.

[0011] Optionally, the anti-magnetic cover is made of carbon steel, and the connecting column is made of aluminum.

[0012] By adopting the technical scheme, carbon steel is selected as the material of the anti-magnetic cover because carbon steel has good magnetic conductivity and mechanical strength, and can play a good anti-magnetic effect and protect the electromagnetic valve.

[0013] Optionally, the connecting column is provided with a first screw rod, the anti-magnetic cover is provided with an opening for the first screw rod to pass through, the fixing member is a threaded cap, and a threaded groove is formed in the lower end of the threaded cap and is in threaded connection with the first screw rod.

[0014] By adopting the technical scheme, the threaded connection between the threaded cap and the first screw rod can quickly and stably fix the anti-magnetic cover on the connecting column.

[0015] Optionally, the electromagnetic valve is provided with a second screw rod, and the lower end of the connecting column is in threaded connection with the second screw rod.

[0016] By adopting the technical scheme, the connecting column can be detachably fixed on the electromagnetic valve.

[0017] Optionally, the anti-magnetic cover further comprises an anti-magnetic strip and tin foil paper, the anti-magnetic strip is arranged between the tin foil paper and the anti-magnetic cover, and the anti-magnetic strip is made of a magnetic conductive material.

[0018] By adopting the technical scheme, when someone places a magnet on the anti-magnetic cover, i.e., on the surface of the tin foil paper, the anti-magnetic strip is magnetically attracted to the magnet, and when the magnet is removed, the anti-magnetic strip is moved, so that the tin foil paper is damaged; thus, whether someone tries to use a magnet to steal oil can be judged according to the damage of the tin foil paper.

[0019] Optionally, the anti-magnetic strip and the tin foil paper are arranged on all the outer side walls of the anti-magnetic cover.

[0020] Optionally, the anti-magnetic cover further comprises an anti-fake label, and the anti-fake label is arranged on the outer side wall of the tin foil paper.

[0021] By adopting the technical scheme, whether the tin foil paper has been replaced by someone can be identified by reading the information on the label.

[0022] Optionally, the connecting column and the threaded cap are provided in plurality, and the upper ends of all the threaded caps are provided with lead seal holes for the lead seals to pass through.

[0023] By adopting the technical scheme, the lead seal holes are provided to connect the lead seals, which can limit the rotation of the threaded caps by others, and also can have a warning effect if the lead seals are damaged.

[0024] In summary, the present application has at least one of the following beneficial effects:

[0025] 1. By setting up an anti-magnetic cover, most of the magnetic field can be shielded and blocked, achieving all-round shielding protection for the solenoid valve and reducing the possibility of illegal refueling;

[0026] 2. By setting a connecting column, a gap is formed between the anti-magnetic cover and the solenoid valve, which can increase the distance between the external magnet and the solenoid valve, thereby reducing the influence of the magnet on the coil and further increasing the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of an embodiment of the present application;

[0028] Figure 2 It is a schematic diagram of the explosion structure of an embodiment of the present application.

[0029] Explanation of the accompanying reference numerals: 101, solenoid valve; 102, second screw; 1, anti-magnetic cover; 2, fixing piece; 21, threaded cap; 22, lead seal hole; 3, connecting column; 31, first screw; 4, anti-magnetic strip; 5, tin foil; 6, anti-counterfeiting label. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-2 This application is described in further detail.

[0031] Example 1:

[0032] The embodiment of the present application discloses an electromagnetic shielding cover. Figure 1 and Figure 2 The electromagnetic shielding cover includes an anti-magnetic cover 1 and a fixing part 2. The anti-magnetic cover 1 is a rectangular cover with a hollow interior and an opening at the bottom. It can be installed on the outside of the solenoid valve 101 from top to bottom. The fixing part 2 can fix the anti-magnetic cover 1 on the solenoid valve 101. The cover body of the anti-magnetic cover 1 is made of magnetic conductive material. By selecting magnetic conductive material as the main material of the anti-magnetic cover 1, it can form a magnetic field under the action of an external magnet, which can shield and block most of the magnetic field, thereby effectively shielding the interference of the external magnet on the solenoid valve 101 and reducing the possibility of illegal refueling.

[0033] Reference Figure 1 and Figure 2 In this embodiment, the shield 1 is preferably made of carbon steel. In other embodiments, the shield 1 may also be made of iron, nickel-iron alloy, or other materials. Selecting carbon steel as the shield 1 ensures both effective shielding and good mechanical strength. To provide adequate shielding, the shield 1 should be at least 3 mm thick. In this embodiment, the shield 1 is preferably 5 mm thick.

[0034] Reference Figure 1 and Figure 2In this embodiment, the electromagnetic shield further includes a connecting post 3, which is provided on the upper surface of the solenoid valve 101. The anti-magnetic cover 1 abuts against the upper surface of the connecting post 3, thereby forming a gap between the solenoid valve 101 and the anti-magnetic cover 1, and the fixing member 2 can fix the anti-magnetic cover 1 to the connecting post 3. It should be noted that when the anti-magnetic cover 1 abuts against the upper surface of the connecting post 3, there is a gap between all inner side walls of the anti-magnetic cover 1 and the solenoid valve 101. This structural design can increase the distance between the external magnet and the solenoid valve 101, reduce the direct impact of the external magnetic field on the solenoid valve 101, thereby further enhancing the anti-magnetic effect, more effectively protecting the solenoid valve 101, and further reducing the possibility of it being controlled by the external magnet.

[0035] Specifically, the connecting column 3 is made of an anti-magnetic material, preferably aluminum. Aluminum has good mechanical strength and non-magnetic properties, which can not only ensure the strength requirements of the connecting column 3, but also effectively prevent the connecting column 3 itself from generating additional magnetic field interference. The structure of the connecting column 3 is not limited, and can be rectangular, cylindrical, etc. In this embodiment, the connecting column 3 is configured to be cylindrical. A second screw 102 is fixed to the upper surface of the solenoid valve 101, and a thread groove is provided on the lower surface of the connecting column 3, so that the connecting column 3 can be fixed to the solenoid valve 101 through the threaded connection between the connecting column 3 and the second screw 102.

[0036] Reference Figure 2 Furthermore, a first screw 31 is coaxially fixed to the upper surface of the connecting column 3, and the first screw 31 is preferably integrally formed with the connecting column 3. The diameter of the first screw 31 is smaller than that of the connecting column 3, and an opening for the first screw 31 to pass through is provided at the upper end of the anti-magnetic cover 1. The fixing part 2 is a threaded cap 21, and a threaded groove is provided on the lower surface of the threaded cap 21. The threaded cap 21 is threadedly connected to the first screw 31 through the threaded groove, and can press the anti-magnetic cover 1 between the threaded cap 21 and the connecting column 3, thereby fixing the anti-magnetic cover 1. In order to increase the stability of the installation of the anti-magnetic cover 1, a plurality of connecting columns 3 and threaded caps 21 can be provided. In this embodiment, two groups of connecting columns 3 and threaded caps 21 are provided.

[0037] The electromagnetic shielding cover of the present embodiment is implemented as follows: by providing an anti-magnetic shield 1 made of carbon steel on the outside of the solenoid valve 101, it can effectively isolate the influence of external magnets. At the same time, a connecting column 3 is further provided to increase the distance between the solenoid valve 101 and the outer wall of the anti-magnetic shield 1, thereby further reducing the influence of external magnets on the solenoid valve 101, effectively preventing oil theft by applying external magnets. At the same time, the provision of the anti-magnetic shield 1 and the connecting column 3 also protects the battery valve, increasing the stability and reliability of the entire solenoid valve 101.

[0038] Example 2:

[0039] The difference between this embodiment and embodiment 1 is that protective warning measures such as an anti-magnetic strip 4, tin foil 5, anti-counterfeiting label 6, and a lead seal are further added.

[0040] Reference Figure 2 In this embodiment, the tin foil 5 is fixed to the surface of the anti-magnetic cover 1 by means of adhesive. Its shape is adapted to the shape of the side wall of the anti-magnetic cover 1, and it is adhered to the five outer surfaces of the anti-magnetic cover 1. The anti-magnetic strip 4 is arranged between the tin foil 5 and the anti-magnetic cover 1 and is fixed to the anti-magnetic cover 1 through the tin foil 5. The anti-magnetic strip 4 is made of a magnetic conductive material and is similar to the anti-magnetic cover 1, preferably made of carbon steel. The anti-magnetic strip 4 is configured as a rectangular strip structure with a length portion according to the size of the surface of the anti-magnetic cover 1 and is respectively provided on the five surfaces of the anti-magnetic cover 1. When someone places a magnet on the anti-magnetic cover 1, that is, on the surface of the tin foil 5, the anti-magnetic strip 4 is magnetically attracted to the magnet. When the magnet is removed, the anti-magnetic strip 4 is driven to move, causing the tin foil 5 to break. Therefore, by observing the damage to the tin foil 5, it can be determined whether someone is trying to use a magnet to steal oil.

[0041] Reference Figure 1 and Figure 2 In this embodiment, the anti-counterfeiting label 6 is attached to the outer wall of the tinfoil 5. A unique identification code or identification pattern can be set on the anti-counterfeiting label 6, and by reading the information on the label, it can be determined whether the tinfoil 5 has been replaced.

[0042] Reference Figure 1 and Figure 2 In this embodiment, the upper surface of the threaded cap 21 has an upwardly protruding boss, which is provided with a lead seal hole 22. The lead seal hole 22 is horizontally extending to the side wall of the boss. The lead seal mainly consists of two parts: a metal rope and a buckle (not shown in the figure). During use, the metal rope is passed through the lead seal holes 22 on the two threaded caps 21 and is fixed and locked with the buckle, thereby connecting the two threaded caps 21 together. To open the threaded caps 21, the lead seal must be broken. Therefore, the lead seal can play a role in restricting others from rotating the threaded cap 21 to a certain extent, and it can also serve as a warning if the lead seal is broken. Preferably, a unique identification code can also be set on the lead seal to identify whether the lead seal has been replaced.

[0043] The electromagnetic shielding cover of the present application is implemented as follows: tinfoil 5 and anti-magnetic strips 4 are provided. When someone uses a magnet on the outside of the anti-magnetic shield 1, the tinfoil 5 is damaged. Therefore, by observing the damage to the tinfoil 5, it can be determined whether someone is trying to use a magnet to steal oil. The provision of an anti-counterfeiting label 6 prevents others from replacing the original tinfoil 5. A lead seal hole 22 is provided for connecting a lead seal, and by observing the damage to the lead seal, it can be determined whether someone has turned the threaded cap 21.

[0044] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An electromagnetic shielding cover, characterized in that: It comprises an anti-magnetic cover (1) and a fixing member (2), wherein the anti-magnetic cover (1) can be arranged on the outside of the electromagnetic valve (101) from top to bottom, and the fixing member (2) can fix the anti-magnetic cover (1) on the electromagnetic valve (101), and the cover body of the anti-magnetic cover (1) is made of a magnetic conductive material; A connecting column (3) is provided at the upper end of the solenoid valve (101), the anti-magnetic cover (1) abuts against the connecting column (3), and a gap is formed between the anti-magnetic cover (1) and the solenoid valve (101), and the connecting column (3) is made of anti-magnetic material; The connecting column (3) is provided with a first screw (31), the anti-magnetic cover (1) is provided with an opening for the first screw (31) to pass through, the fixing member (2) is a threaded cap (21), the lower end of the threaded cap (21) is provided with a threaded groove and is threadedly connected to the first screw (31); A second screw (102) is provided on the solenoid valve (101), and the lower end of the connecting column (3) is threadedly connected to the second screw (102).

2. The electromagnetic shield according to claim 1, wherein: The anti-magnetic cover (1) is made of carbon steel, and the connecting column (3) is made of aluminum.

3. The electromagnetic shielding cover according to claim 1, wherein: It also includes an anti-magnetic strip (4) and tinfoil (5), wherein the anti-magnetic strip (4) is arranged between the tinfoil (5) and the anti-magnetic cover (1), and the anti-magnetic strip (4) is made of a magnetic conductive material.

4. The electromagnetic shielding cover according to claim 3, characterized in that: The anti-magnetic strip (4) and the tin foil (5) are respectively arranged on all outer side walls of the anti-magnetic cover (1).

5. The electromagnetic shielding cover according to claim 4, characterized in that: It also includes an anti-counterfeiting label (6), which is arranged on the outer side wall of the tinfoil (5).

6. The electromagnetic shielding cover according to claim 1, characterized in that: A plurality of the connecting columns (3) and the threaded caps (21) are provided, and a lead seal hole (22) for a lead seal to pass through is provided at the upper end of each of the threaded caps (21).

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