An electric appliance and instrument automatic control device with explosion-proof function

Abstract

An electric appliance and instrument automatic control device with explosion-proof function relates to electric appliance and instrument technical field, including outer box and inner box, the inner box is arranged in the outer box with sliding, the left and right side walls of inner box are provided with pressure relief assembly symmetrically, the pressure relief assembly includes pressure relief pipe, one end of pressure relief pipe is communicated with the inside of inner box, the other end is connected with protection cover through thread, the upper and lower sides of the middle part of pressure relief pipe are provided with pressure relief port, the movable block is equipped in pressure relief pipe, one end of movable block is contacted with the step on the inner wall of pressure relief pipe, the other end outside is provided with sliding block, the sliding block is connected in the slide of the inner wall of pressure relief pipe with sliding, the end surface of movable block is provided with sleeve rod between the inner wall of protection cover, the sleeve rod outside is equipped with first spring, one end of first spring is contacted with protection cover, the other end is contacted with movable block, the pressure in the inner box can be discharged through the setting pressure relief assembly, and the safety hidden danger is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electrical instrument technology, specifically to an electrical instrument automatic control device with explosion-proof function. Background Technology

[0002] With the development of society, instruments are being used more and more frequently. Instruments mainly refer to a general term for measuring temperature, air pressure, electricity, blood volume, flow rate, etc. Instruments need to be placed inside a protective housing for protection. Instruments come in a variety of styles, and different instrument styles determine the diversity of housings. Single-function instruments and housings specifically designed to store instruments both need to be customized.

[0003] In the existing technology, most electrical instruments are placed in a sealed box. On the one hand, as the electrical instruments continue to operate in the sealed space, they will generate a lot of heat, which will increase the air pressure inside the box. If it is not released in time, it will lead to equipment failure and safety hazards. On the other hand, when performing circuit repair or electrical maintenance, the entire box needs to be disassembled and then reinstalled on the wall after the repair is completed. Repeated drilling will cause certain damage to the wall. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an electrical instrument automatic control device with explosion-proof function, which can solve the above technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An explosion-proof electrical instrument control device includes an outer casing and an inner casing, with the inner casing slidably disposed within the outer casing. Electrical instruments are installed inside the inner casing. A wiring hole is provided at the bottom of the inner casing. Pressure relief components are symmetrically arranged on the left and right side walls of the inner casing. Each pressure relief component includes a pressure relief pipe, one end of which communicates with the interior of the inner casing, and the other end is threadedly connected to a protective cap. Pressure relief ports are provided on both the upper and lower sides of the middle section of the pressure relief pipe. A movable block is provided inside the pressure relief pipe, located between the two pressure relief ports. One end of the movable block contacts a step on the inner wall of the pressure relief pipe, and a slider is provided on the outer side of the other end. The slider is slidably connected within a slide rail on the inner wall of the pressure relief pipe. A sleeve is provided between the end face of the movable block and the inner wall of the protective cap. A first spring is sleeved on the outer side of the sleeve, with one end of the first spring abutting against the protective cap and the other end abutting against the movable block.

[0007] Preferably, a sealing ring is provided between the movable block and the step on the inner wall of the pressure relief pipe.

[0008] Preferably, ventilation holes are provided on both the left and right side walls of the outer casing, and a U-shaped groove for installing cable holes is provided on the bottom of the outer casing.

[0009] Preferably, a fixing block is provided at each of the four corners of the outer casing, and the fixing block is installed on the wall by expansion bolts.

[0010] Preferably, the bottom of the outer casing is symmetrically provided with slide rails, and the bottom of the inner casing is symmetrically provided with sliding bars, which are slidably disposed within the slide rails; both ends of the slide rails are also provided with shock-absorbing components, each including a shock-absorbing plate, with guide posts symmetrically provided on both sides of the upper end of the shock-absorbing plate, the slide rails being movably sleeved on the two guide posts and locked by compression nuts, and a second spring being sleeved on the outer side of the guide posts, one end of the second spring abutting against the slide rail and the other end abutting against the shock-absorbing plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up a pressure relief component, can release the pressure inside the inner chamber, avoiding potential safety hazards. When the air pressure inside the inner chamber increases, the air pressure pushes the movable block to the left. At this time, the first spring is compressed, and the air pressure enters the outer chamber through the upper and lower pressure relief ports, and is then discharged through the vent holes in the outer chamber wall.

[0013] 2. By setting the inner box and the outer box to slide together, this utility model makes it easy to pull the inner box out from the outer box when maintaining electrical components or lines, which improves maintenance efficiency. Moreover, no new holes need to be drilled when reinstalling, thus avoiding damage to the wall.

[0014] 3. By installing shock-absorbing components at the bottom of the inner box, this utility model can prevent damage to the electrical components inside the box when the inner box is subjected to external interference or vibration, thereby improving its service life. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic cross-sectional view of the pressure relief component of this utility model;

[0018] Figure 3 This is a schematic diagram of the shock absorption component structure of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1-Outer casing, 2-Inner casing, 3-Electrical instruments, 4-Cable hole, 5-Pressure relief assembly, 51-Pressure relief pipe, 52-Protective cover, 53-Pressure relief port, 54-Moving block, 55-Step, 56-Slider, 57-Slide rail, 58-Sleeve rod, 59-First spring, 510-Sealing ring, 6-Ventilation hole, 7-U-groove, 8-Fixing block, 9-Slide rail, 10-Sliding strip, 11-Shock absorption assembly, 111-Shock absorption plate, 112-Guide post, 113-Pressure nut, 114-Second spring. Detailed Implementation

[0021] The invention will now be described in detail with reference to the accompanying drawings, by way of example. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments.

[0022] like Figures 1 to 3 As shown, this utility model discloses an electrical instrument automatic control device with explosion-proof function, including an outer box 1 and an inner box 2. The electrical instrument 3 is installed inside the inner box 2. The bottom of the inner box 2 is provided with a wiring hole 4. The bottom of the outer box 1 is provided with a U-shaped groove 7 for installing the wiring hole 4. The inner box 2 is slidably disposed inside the outer box 1. Specifically, the bottom of the outer box 1 is symmetrically provided with slide rails 9, and the bottom of the inner box 2 is symmetrically provided with sliding bars 10. The sliding bars 10 are slidably disposed inside the slide rails 9. By setting the inner box 2 and the outer box 1 to be slidably connected, it is convenient to disassemble and assemble the inner box 2. When maintaining electrical components or circuits, it is convenient to pull the inner box 2 out from the outer box 1, which improves maintenance efficiency. Moreover, no new holes need to be drilled when reinstalling, avoiding damage to the wall.

[0023] The slide rail 9 is further equipped with shock-absorbing components 11 at both ends. Each shock-absorbing component 11 includes a shock-absorbing plate 111. Guide posts 112 are symmetrically arranged on both sides of the upper end of the shock-absorbing plate 111. The slide rail 9 is movably sleeved on the two guide posts 112 and locked in place by a clamping nut 113. A second spring 114 is sleeved on the outer side of each guide post 112. One end of the second spring 114 abuts against the slide rail 9, and the other end abuts against the shock-absorbing plate 111. By setting the shock-absorbing components 11, damage to the electrical components inside the inner box 2 can be avoided when it is subjected to external interference or vibration. In application, the vibration experienced by the inner box 2 is transmitted to the slide rail 9 through the sliding bar 10. The slide rail 9 moves up and down along the guide posts 112 and transmits the vibration force to the second spring 114. Under the action of the second spring 114, the vibration force is reduced or canceled out, ensuring the stability of the electrical components.

[0024] Ventilation holes 6 are provided on both the left and right side walls of the outer casing 1 to facilitate the release of air pressure; fixing blocks 8 are provided on the four corners of the outer casing 1. The fixing blocks 8 are installed on the wall by expansion bolts. When installing this device, only one hole needs to be drilled in the wall to install the outer casing 1. During subsequent maintenance, there is no need to disassemble the outer casing 1. The inner casing 2 can be pulled out from the outer casing 1.

[0025] Pressure relief components 5 are symmetrically arranged on the left and right side walls of the inner box 2. Each pressure relief component 5 includes a pressure relief pipe 51, one end of which is connected to the interior of the inner box 2, and the other end is connected to a protective cap 52 via a thread. Pressure relief ports 53 are provided on both the upper and lower sides of the middle section of the pressure relief pipe 51. A movable block 54 is provided inside the pressure relief pipe 51, located between the two pressure relief ports 53. One end of the movable block 54 contacts a step 55 on the inner wall of the pressure relief pipe 51, and the other end is exposed outside. A slider 56 is provided on the side, which is slidably connected to a slide rail 57 opened on the inner wall of the pressure relief pipe 51 to ensure the stability of the movement of the movable block 54. A sleeve rod 58 is provided between the end face of the movable block 54 and the inner wall of the protective cover 52. A first spring 59 is sleeved on the outside of the sleeve rod 58. One end of the first spring 59 abuts against the protective cover 52, and the other end abuts against the movable block 54. By setting up the pressure relief assembly 5, the pressure in the inner box 2 can be discharged to avoid safety hazards. When the air pressure in the inner box 2 increases, the air pressure pushes the movable block 54 to the left. At this time, the first spring 59 is compressed, and the air pressure enters the outer box 1 through the upper and lower pressure relief ports 53, and then is discharged through the vent hole 6 on the wall of the outer box 1.

[0026] A sealing ring 510 is provided between the movable block 54 and the step 55 on the inner wall of the pressure relief pipe 51 to ensure the airtightness of the inner box 2 and prevent external dust from entering.

[0027] During installation, first install the outer box 1 onto the wall and secure it using expansion bolts. After the electrical components or wiring in the inner box 2 are installed, insert the sliding strip 10 at the bottom of the inner box 2 into the slide rail 9 and push it into the outer box 1 until the inner box 2 is completely inside the outer box 1. Then close the door of the outer box 1. When disassembling the inner box 2, pull it out from the outer box 1 along the slide rail 9 in the opposite direction. The design of the inner and outer boxes facilitates disassembly and assembly, improving maintenance efficiency.

[0028] When the air pressure in the inner box 2 increases, the air pressure pushes the movable block 54 to move to the left. At this time, the first spring 59 is compressed, and the air pressure enters the outer box 1 through the upper and lower pressure relief ports 53, and is then discharged through the vent 6 on the wall of the outer box 1.

[0029] When the inner box 2 is subjected to vibration, the vibration force is transmitted to the slide rail 9 through the sliding bar 10. The slide rail 9 moves up and down along the guide post 112 and transmits the vibration force to the second spring 114. Under the action of the second spring 114, the vibration force is reduced or canceled, ensuring the stability of the electrical components.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and application concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electrical instrument automatic control device with explosion-proof function, characterized in that: The device includes an outer casing (1) and an inner casing (2), the inner casing (2) being slidably disposed inside the outer casing (1); electrical instruments (3) are installed inside the inner casing (2); a cable routing hole (4) is provided at the bottom of the inner casing (2); pressure relief components (5) are symmetrically arranged on the left and right side walls of the inner casing (2); the pressure relief component (5) includes a pressure relief pipe (51), one end of the pressure relief pipe (51) is connected to the inside of the inner casing (2), and the other end is connected to a protective cover (52) by a thread; pressure relief ports (53) are provided on both the upper and lower sides of the middle part of the pressure relief pipe (51), and a movable block (54) is provided inside the pressure relief pipe (51). The movable block (54) is located between the upper and lower pressure relief ports (53). One end of the movable block (54) is in contact with the step (55) on the inner wall of the pressure relief pipe (51), and the other end is provided with a slider (56). The slider (56) is slidably connected in the slide (57) opened on the inner wall of the pressure relief pipe (51). A sleeve rod (58) is provided between the end face of the movable block (54) and the inner wall of the protective cover (52). A first spring (59) is sleeved on the outside of the sleeve rod (58). One end of the first spring (59) abuts against the protective cover (52), and the other end abuts against the movable block (54).

2. The electrical instrument automatic control device with explosion-proof function as described in claim 1, characterized in that: A sealing ring (510) is provided between the movable block (54) and the step (55) on the inner wall of the pressure relief pipe (51).

3. The electrical instrument automatic control device with explosion-proof function as described in claim 1, characterized in that: Ventilation holes (6) are provided on both the left and right side walls of the outer casing (1), and a U-shaped groove (7) for installing cable holes (4) is provided at the bottom of the outer casing (1).

4. The electrical instrument automatic control device with explosion-proof function as described in claim 1, characterized in that: The outer casing (1) is provided with fixing blocks (8) at each of its four corners, and the fixing blocks (8) are installed on the wall by expansion bolts.

5. The electrical instrument automatic control device with explosion-proof function as described in claim 1, characterized in that: The bottom of the outer box (1) is symmetrically provided with slide rails (9), and the bottom of the inner box (2) is symmetrically provided with sliding bars (10). The sliding bars (10) are slidably disposed in the slide rails (9). The slide rails (9) are also provided with shock-absorbing components (11) at both ends. The shock-absorbing components (11) include shock-absorbing plates (111). The upper ends of the shock-absorbing plates (111) are symmetrically provided with guide posts (112). The slide rails (9) are movably sleeved on the two guide posts (112) and locked by clamping nuts (113). The guide posts (112) are sleeved with a second spring (114) on the outside. One end of the second spring (114) abuts against the slide rails (9), and the other end abuts against the shock-absorbing plates (111).

Images