Anti-shielding anti-interference power supply filter

Abstract

The utility model discloses an anti-shielding anti-interference power supply filter, which relates to the technical field of power supply filters and comprises a filter shell, connecting blocks are fixed on the outer walls of the two sides of the filter shell, a first L-shaped protective plate covers the bottom of the filter shell, and a second L-shaped protective plate covers the top of the filter shell. The two connecting blocks are connected with the first L-shaped protective plate through a locking structure, the first L-shaped protective plate is connected with the second L-shaped protective plate through a bolt, the locking structure comprises a screw rod inserted into the connecting blocks in a sliding mode, the lower end of the screw rod is connected with an L-shaped clamping block, and the screw rod is in threaded connection with a nut. According to the utility model, the locking structure is matched with the connection of the first L-shaped protective plate and the second L-shaped protective plate, so that the filter shell can be protected, the anti-interference effect can be achieved, and the interference of external electromagnetic waves on the power supply filter is avoided, and therefore, the power supply filter has a good anti-interference effect, is quick to install, and is convenient to use. Disassembly is simple, time and labor are saved, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply filters, in particular to an anti-shielding and anti-interference power supply filter. Background Art

[0002] A power filter is an electrical device that effectively filters out a specific frequency point in the power line or frequencies outside of the specific frequency point. The function of a power filter is to obtain a power signal of a specific frequency or eliminate a power signal after a specific frequency by connecting a power filter to the power line. By using this characteristic of the power filter, a square wave group or composite noise after passing through the power filter can be turned into a sine wave of a specific frequency. However, current power filters have some defects:

[0003] First, the anti-shielding and anti-interference effect is not good, and the interference signal cannot be effectively shielded, which is not convenient for people to use;

[0004] Secondly, it is not convenient to carry out effective fixation, and it is not convenient to disassemble and maintain, and the operation is complicated, time-consuming and labor-intensive.

[0005] Therefore, we propose an anti-shielding and anti-interference power supply filter. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides an anti-shielding and anti-interference power supply filter. By setting a locking structure and cooperating with the connection between the first L-shaped guard plate and the second L-shaped guard plate, the filter housing can be protected and anti-interference can be prevented, thereby preventing external electromagnetic waves from interfering with the power supply filter. This ensures that the power supply filter has a good anti-interference effect, and is quick to install, simple to disassemble, time-saving, labor-saving and convenient to maintain. This overcomes the deficiencies in the prior art and effectively solves the problems that the prior power supply filter has a poor anti-shielding and anti-interference effect, cannot effectively shield interference signals, is inconvenient for people to use and is not convenient for effective fixation, is not convenient for disassembly and maintenance, and is complex to operate and time-consuming and labor-intensive.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] An anti-shielding and anti-interference power supply filter comprises a filter housing, both side outer walls of the filter housing are fixed with connecting blocks, the bottom cover of the filter housing is provided with a first L-shaped protective plate, the top cover of the filter housing is provided with a second L-shaped protective plate, the two connecting blocks are connected to the first L-shaped protective plate by a locking structure, and the first L-shaped protective plate and the second L-shaped protective plate are connected by bolts.

[0009] Through the above-mentioned scheme, by setting the locking structure and cooperating with the connection between the first L-shaped guard plate and the second L-shaped guard plate, the filter housing can be protected and anti-interference can be achieved, thereby preventing external electromagnetic waves from interfering with the power filter. This makes the power filter have good anti-interference effect, and is quick to install, simple to disassemble, time-saving and labor-saving, and convenient to maintain.

[0010] Preferably, the locking structure comprises a screw rod slidably inserted into the connecting block, and the lower end of the screw rod is connected to an L-shaped clamping block, and a nut is threaded onto the screw rod.

[0011] According to the above solution, the nut is screwed with a wrench so that the screw rod 5 drives the L-shaped clamping block 3 to move upward, and then the first L-shaped protective plate 7 and the filter housing 1 are clamped by the L-shaped clamping block 3 .

[0012] Preferably, positioning holes are provided on both of the two connecting blocks.

[0013] Through the above solution, bolts are used at the positioning holes 4 to connect the connection block 2 to the internal threaded column at the installation position.

[0014] Preferably, a communicating threaded hole is provided at the top of the vertical section of the first L-shaped guard plate and one side of the horizontal section of the second L-shaped guard plate, and a bolt is screwed into the threaded hole.

[0015] Through the above solution, the second L-shaped guard plate 6 can be connected to the first L-shaped guard plate 7 by using bolts, and the first L-shaped guard plate 7 and the second L-shaped guard plate 6 are used to surround the filter housing 1 to protect the filter housing 1.

[0016] Preferably, the first L-shaped guard plate and the second L-shaped guard plate both include a high-strength layer, a high-temperature resistant layer is provided on one side of the high-strength layer, an anti-interference layer is provided on one side of the high-temperature resistant layer, and some of the anti-interference layers are provided with a coating layer.

[0017] Preferably, the high-strength layer is an iron-aluminum alloy, the high-temperature resistant layer is a polyetheretherketone plastic, and the coating layer is an intumescent fire-retardant paint.

[0018] Through the above-mentioned scheme, the coating layer 14 can play a role of fire retardancy, thereby improving the safety of the power filter. The high-strength layer 11 can make the filter housing 1 have good strength, thereby effectively protecting the components in the filter housing 1. The anti-interference layer 13 can play an anti-interference role to prevent external electromagnetic waves from interfering with the power filter, thereby making the power filter have a good anti-interference effect.

[0019] The beneficial effects of the utility model are:

[0020] 1. The coating layer 14 can play a role of fire retardancy, thereby improving the safety of the power filter. The high-strength layer 11 can make the filter housing 1 have good strength, thereby effectively protecting the components in the filter housing 1. The anti-interference layer 13 can play an anti-interference role, avoiding external electromagnetic waves from interfering with the power filter, thereby making the power filter have a good anti-interference effect.

[0021] 2. Insert the first L-shaped guard plate under the filter housing 1, use a wrench to tighten the nut so that the screw drives the L-shaped clamp to move upward, and then use the L-shaped clamp to clamp the first L-shaped guard plate and the filter housing, use bolts to connect the second L-shaped guard plate to the first L-shaped guard plate, and use the first L-shaped guard plate and the second L-shaped guard plate to surround the filter housing, which plays a protective role for the filter housing. It is quick to install and easy to disassemble, saving time and effort, and convenient for maintenance.

[0022] To sum up, by setting the locking structure and cooperating with the connection between the first L-shaped guard plate and the second L-shaped guard plate, the filter housing can be protected and anti-interference can be prevented, thereby preventing external electromagnetic waves from interfering with the power filter. This makes the power filter have good anti-interference effects, and is quick to install and easy to disassemble, saving time and effort and facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-perspective stereoscopic structural schematic diagram of an anti-shielding and anti-interference power supply filter proposed by the utility model.

[0024] Figure 2 This is a schematic diagram of the split first-person perspective structure of an anti-shielding and anti-interference power supply filter proposed by the utility model.

[0025] Figure 3 This is a schematic diagram of the split second-view structure of an anti-shielding and anti-interference power supply filter proposed by the utility model.

[0026] Figure 4 The utility model provides a schematic diagram of the cross-sectional structure of a first L-shaped protective plate and a second L-shaped protective plate of an anti-shielding and anti-interference power supply filter.

[0027] In the figure: 1. filter housing; 11. high-strength layer; 12. high-temperature resistant layer; 13. anti-interference layer; 14. coating layer; 2. connecting block; 3. L-shaped block; 4. positioning hole; 5. screw; 6. second L-shaped guard plate; 7. first L-shaped guard plate; 8. threaded hole. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Example 1, reference Figure 1-4 , an anti-shielding and anti-interference power supply filter, comprising a filter housing 1, both sides of the outer wall of the filter housing 1 are fixed with connecting blocks 2, the bottom cover of the filter housing 1 is provided with a first L-shaped protective plate 7, the top cover of the filter housing 1 is provided with a second L-shaped protective plate 6, and the two connecting blocks 2 are connected to the first L-shaped protective plate 7 through a locking structure;

[0030] The locking structure includes a screw rod 5 which is slidably inserted into the connecting block 2, and the lower end of the screw rod 5 is connected to an L-shaped clamping block 3, and a nut is threaded onto the screw rod 5;

[0031] The nut is screwed with a wrench so that the screw rod 5 drives the L-shaped clamping block 3 to move upward, and then the first L-shaped guard plate 7 and the filter housing 1 are clamped by the L-shaped clamping block 3;

[0032] The two connection blocks 2 are provided with positioning holes 4, and bolts are used to connect the connection blocks 2 to the internal threaded columns at the installation positions at the positioning holes 4;

[0033] The first L-shaped guard plate 7 is connected to the second L-shaped guard plate 6 by bolts. A threaded hole 8 is provided at the top of the vertical section of the first L-shaped guard plate 7 and one side of the horizontal section of the second L-shaped guard plate 6, and a bolt is screwed into the threaded hole 8.

[0034] The second L-shaped guard plate 6 can be connected to the first L-shaped guard plate 7 by using bolts, and the filter housing 1 can be surrounded by the first L-shaped guard plate 7 and the second L-shaped guard plate 6 to protect the filter housing 1;

[0035] The first L-shaped guard plate 7 and the second L-shaped guard plate 6 both include a high-strength layer 11, the high-strength layer 11 is an iron-aluminum alloy, a high-temperature resistant layer 12 is provided on one side of the high-strength layer 11, the high-temperature resistant layer 12 is polyetheretherketone plastic, an anti-interference layer 13 is provided on one side of the high-temperature resistant layer 12, and a coating layer 14 is provided on some of the anti-interference layer 13, and the coating layer 14 is an intumescent fire retardant paint;

[0036] The coating layer 14 can play a role in fire retardancy, thereby improving the safety of the power filter. The high-strength layer 11 can make the filter housing 1 have good strength, thereby effectively protecting the components in the filter housing 1. The anti-interference layer 13 can play an anti-interference role, avoiding external electromagnetic waves from interfering with the power filter, thereby making the power filter have good anti-interference effect.

[0037] Working principle: by inserting the first L-shaped guard plate 7 under the filter housing 1, tightening the nut with a wrench so that the screw rod 5 drives the L-shaped block 3 to move up, and then using the L-shaped block 3 to clamp the first L-shaped guard plate 7 and the filter housing 1, using bolts to connect the second L-shaped guard plate 6 to the first L-shaped guard plate 7, and using the first L-shaped guard plate 7 and the second L-shaped guard plate 6 to surround the filter housing 1, so as to protect the filter housing 1. The installation is quick and the disassembly is simple, which saves time and effort and is convenient for maintenance. The paint layer 14 can play a fire retardant role, thereby improving the safety of the power filter. The high-strength layer 11 can make the filter housing 1 have good strength, thereby effectively protecting the components in the filter housing 1. The anti-interference layer 13 can play an anti-interference role to prevent external electromagnetic waves from interfering with the power filter, thereby making the power filter have a good anti-interference effect.

[0038] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An anti-shielding and anti-interference power supply filter, comprising a filter housing (1), characterized in that: Connecting blocks (2) are fixed to the outer walls of both sides of the filter housing (1); the bottom cover of the filter housing (1) is provided with a first L-shaped protective plate (7); the top cover of the filter housing (1) is provided with a second L-shaped protective plate (6); the two connecting blocks (2) are connected to the first L-shaped protective plate (7) via a locking structure; and the first L-shaped protective plate (7) is connected to the second L-shaped protective plate (6) via bolts.

2. The anti-shielding and anti-interference power supply filter according to claim 1, characterized in that: The locking structure comprises a screw rod (5) which is slidably plugged into the connection block (2), the lower end of the screw rod (5) is connected to an L-shaped clamping block (3), and a nut is threaded onto the screw rod (5).

3. The anti-shielding and anti-interference power supply filter according to claim 2, characterized in that: Positioning holes (4) are provided on the two connecting blocks (2).

4. The anti-shielding and anti-interference power supply filter according to claim 1, characterized in that: A communicating threaded hole (8) is provided at the top of the vertical section of the first L-shaped guard plate (7) and one side of the horizontal section of the second L-shaped guard plate (6), and a bolt is screwed into the threaded hole (8).

5. The anti-shielding and anti-interference power supply filter according to claim 1, characterized in that: The first L-shaped guard plate (7) and the second L-shaped guard plate (6) both comprise a high-strength layer (11), a high-temperature resistant layer (12) is provided on one side of the high-strength layer (11), an anti-interference layer (13) is provided on one side of the high-temperature resistant layer (12), and some of the anti-interference layers (13) are provided with a coating layer (14).

6. The anti-shielding and anti-interference power supply filter according to claim 5, characterized in that: The high-strength layer (11) is an iron-aluminum alloy, the high-temperature resistant layer (12) is a polyetheretherketone plastic, and the coating layer (14) is an intumescent fire-retardant paint.

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