Explosion-proof instrument

Abstract

The utility model discloses an explosion-proof instrument which comprises a bottom plate, an instrument panel is installed on the bottom plate, a shell is fixedly installed on the bottom plate, a stepped groove is formed in the shell, an observation window is installed in the stepped groove, an adhesive layer is fixedly connected to the right side of the observation window, a metal wire is arranged in the adhesive layer, and the metal wire is fixedly connected to the right side of the observation window. And the end part of the metal wire is arranged in the shell. By adopting the structure, the adhesive layer is arranged on the surface of the observation window, the adhesive layer has a buffer type, the observation window can be adhered together even if the observation window is broken by matching with the explosion-proof film and is not easy to fly, and meanwhile, the metal wire is arranged to penetrate through the adhesive layer and can play a role in blocking the observation window after the metal wire is fixed in the shell, so that the observation window is prevented from being broken. The explosion-proof instrument can prevent the observation window from collapsing and hurting people, solves the problem that the observation window of the instrument is easy to collapse, and is good in explosion-proof performance and not easy to cause safety accidents after explosion due to the fact that the pressure release valve, the reinforcing ribs and other components are installed on the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of instruments and meters, and particularly relates to an explosion-proof instrument. Background Technique

[0002] Industrial instruments refer to flow measurement instruments such as gas and liquid turbine flowmeters, vortex street flowmeters, electromagnetic flowmeters, as well as industrial instruments such as pressure switches, differential pressure switches, pressure transmitters, differential pressure transmitters, liquid level switches, liquid level gauges, temperature and humidity recorders, etc. However, ordinary industrial instruments. For example, the "vibration-proof industrial instrument" disclosed in the patent application number CN202023229854.7.

[0003] When observing the data of the instrument in an explosive gas environment, it is often necessary to fix the instrument in an explosion-proof box. However, the instrument itself is not explosion-proof treated. Especially when the instrument needs to be provided with an observation window for observation, the observation window is easy to break and fly off when subjected to an explosion shock, resulting in safety accidents. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an explosion-proof instrument to solve the problem that the observation window of the instrument is easy to fly off.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An explosion-proof instrument, including a bottom plate, a dashboard is installed on the bottom plate, a housing is fixedly installed on the bottom plate, a stepped groove is arranged inside the housing, an observation window is installed in the stepped groove, an adhesive layer is fixedly connected to the right side of the observation window, metal wires are arranged inside the adhesive layer, and the ends of the metal wires are installed inside the housing. An explosion-proof film is fixedly connected to the right side of the adhesive layer, and a pressure relief valve is installed on the housing.

[0007] Preferably, the pressure relief valve includes a sliding cylinder, the sliding cylinder is fixedly installed on the housing, a piston is movably connected inside the sliding cylinder, the bottom of the piston communicates with the cavity inside the housing, the top of a spring is fixed inside the sliding cylinder, and an exhaust hole is arranged on the side surface of the sliding cylinder.

[0008] Preferably, a pressing plate is installed inside the housing, the pressing plate is fixed inside the housing by screws, and the ends of the metal wires are pressed between the pressing plate and the housing.

[0009] Preferably, reinforcing ribs are fixedly connected to the outer surface of the housing.

[0010] In summary, the beneficial effects of the present utility model are as follows: An explosion-proof instrument provided by the present utility model, by setting an adhesive layer on the surface of the observation window, the adhesive layer has a buffering type, and in cooperation with the explosion-proof film, even if the observation window is broken, it will stick together and is not easily ejected. At the same time, a metal wire is arranged to penetrate the adhesive layer. After the metal wire is fixed in the housing, it can play a role in blocking the observation window, preventing the observation window from being ejected and hurting people, thus solving the problem that the observation window of the instrument is easily ejected. Pressure relief valves, reinforcing ribs and other components are installed on the housing, making the instrument have good explosion-proof performance and not easily causing safety accidents after an explosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the basic structure of the present utility model;

[0012] Figure 2 is a schematic diagram of the structure of the observation window part of the present utility model;

[0013] Figure 3 is a schematic diagram of the structure of the pressure relief valve part of the present utility model.

[0014] Reference numerals: 1, bottom plate; 2, instrument panel; 3, housing; 4, stepped groove; 5, observation window; 6, adhesive layer; 7, metal wire; 8, explosion-proof film; 9, pressure relief valve; 91, sliding cylinder; 92, piston; 93, spring; 94, exhaust hole; 10, pressing plate; 11, screw; 12, reinforcing rib. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0016] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0017] Such as Figure 1 - Figure 3As shown in the figure, an explosion-proof instrument provided by the utility model includes a bottom plate 1, on which a dashboard 2 is installed. A housing 3 is fixedly installed on the bottom plate 1. A stepped groove 4 is built inside the housing 3. An observation window 5 is installed in the stepped groove 4. A glue layer 6 is fixedly connected to the right side of the observation window 5. A metal wire 7 is arranged inside the glue layer 6, and the end of the metal wire 7 is installed inside the housing 3. An explosion-proof film 8 is fixedly connected to the right side of the glue layer 6. A pressure relief valve 9 is installed on the housing 3.

[0018] The bottom plate 1 is used for installing the dashboard 2. The housing 3 plays a protective role. The stepped groove 4 is a hierarchical design. The observation window 5 is installed in the stepped groove 4. The observation window 5 is transparent and is made of glass or acrylic. The glue layer 6 is a transparent glue solution. When used in combination with the explosion-proof film 8, it can prevent the observation window 5 from flying off due to fragmentation caused by an explosion. The explosion-proof film 8 is a film with good toughness and is a commonly used film material on glass. The metal wire 7 penetrates through the glue layer 6. After the metal wire 7 is fixed inside the housing 3, even if the observation window 5 is broken, in combination with the glue layer 6, it can still block the observation window 5 and prevent the observation window 5 from flying off and hurting people. At the same time, the pressure relief valve 9 can relieve the pressure inside the instrument.

[0019] The pressure relief valve 9 includes a sliding cylinder 91 fixedly installed on the housing 3. A piston 92 is movably connected inside the sliding cylinder 91. The bottom of the piston 92 communicates with the cavity inside the housing 3. The top of a spring 93 is fixed inside the sliding cylinder 91. An exhaust hole 94 is opened on the side of the sliding cylinder 91. Under the action of the spring 93, the piston 92 is pressed down. When the instrument is subjected to a strong air pressure inside, the piston 92 can be pushed up to discharge the air pressure from the exhaust hole 94.

[0020] A pressing plate 10 is installed inside the housing 3. The pressing plate 10 is fixed inside the housing 3 through screws 11, and the end of the metal wire 7 is pressed between the pressing plate 10 and the housing 3. The screws 11 fix the pressing plate 10 on the stepped groove 4 inside the housing 3, which can fix the observation window 5 and, at the same time, can press and fix the metal wire 7.

[0021] Reinforcing ribs 12 are fixedly connected to the outer surface of the housing 3. The provided reinforcing ribs 12 strengthen the housing 3 and make the whole more explosion-proof.

[0022] Working principle: During installation, first install the observation window 5 in the stepped groove 4, and then use the screw 11 to fix the pressure plate 10 on the stepped groove 4 inside the housing 3, which can fix the observation window 5. At the same time, it can press and fix the metal wire 7. The bottom plate 1 is used for the installation of the instrument panel 2, and the housing 3 plays a protective role. The adhesive layer 6 is used in conjunction with the explosion-proof film 8 to prevent the observation window 5 from flying off due to fragmentation caused by an explosion. The metal wire 7 penetrates through the adhesive layer 6. After the metal wire 7 is fixed in the housing 3, even if the observation window 5 is broken, in conjunction with the adhesive layer 6, it can still block the observation window 5 and prevent the observation window 5 from flying off and injuring people.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof instrument, comprising a bottom plate (1), characterized in that: A dashboard (2) is installed on the bottom plate (1). A housing (3) is fixedly installed on the bottom plate (1). A stepped groove (4) is built inside the housing (3). An observation window (5) is installed in the stepped groove (4). A glue layer (6) is fixedly connected to the right side of the observation window (5). A metal wire (7) is arranged inside the glue layer (6), and the end of the metal wire (7) is installed inside the housing (3). An explosion-proof film (8) is fixedly connected to the right side of the glue layer (6). A pressure relief valve (9) is installed on the housing (3).

2. The explosion-proof instrument according to claim 1, wherein: The pressure relief valve (9) includes a sliding cylinder (91). The sliding cylinder (91) is fixedly installed on the housing (3). A piston (92) is movably connected inside the sliding cylinder (91). The bottom of the piston (92) communicates with the cavity inside the housing (3). The top of a spring (93) is fixed inside the sliding cylinder (91). An exhaust hole (94) is formed in the side surface of the sliding cylinder (91).

3. An explosion-proof instrument according to claim 1, characterized in that: A pressing plate (10) is installed inside the housing (3). The pressing plate (10) is fixed inside the housing (3) by screws (11), and the end of the metal wire (7) is pressed between the pressing plate (10) and the housing (3).

4. An explosion-proof instrument according to claim 1, characterized in that: Reinforcing ribs (12) are fixedly connected to the outer surface of the housing (3).

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