Combustible gas alarm

Abstract

The invention provides a combustible gas alarm, which comprises an alarm body, the alarm body comprises a connecting seat, a circuit board is arranged in the connecting seat, a mounting joint is arranged below the connecting seat, a sensor is arranged in the mounting joint, the lower part of the mounting joint is connected with a sensor cover cylinder through a threaded section, and the sensor cover cylinder is connected with a gas outlet. The lower part of the sensor cover cylinder is movably connected with a filter assembly, the filter assembly comprises a clamping ring, a filter screen is connected in the clamping ring, a heating assembly is also fixed in the sensor cover cylinder, and a gas isolation cover is arranged outside a heating wire of the heating assembly. The alarm is simple in structure, can be applied to places with relatively large oil stains in air, and can effectively prevent the oil stains from being solidified to block the alarm. The alarm is simple in structure, can be applied to places with relatively large oil stains in air, and can effectively prevent the oil stains from being solidified to block the alarm.

Description

Technical Field

[0001] The invention relates to the field of combustible gas, and in particular to a combustible gas alarm. Background Art

[0002] With the increasing safety requirements in industrial and civil fields, combustible gas alarms have become indispensable safety equipment in many places. The main function of this type of equipment is to monitor the concentration of combustible gas in the environment. Once the concentration exceeds the preset safety threshold, an alarm will be issued to avoid fire or explosion accidents.

[0003] However, existing combustible gas alarms have some limitations in practical applications. Especially in environments where there is a lot of oil in the air, such as kitchens, industrial stoves, gas stations, etc., the accumulation and solidification of oil may cause the alarm sensor to be blocked, affecting its normal operation. In addition, the presence of oil may also interfere with the accuracy of the sensor, resulting in false alarms or missed alarms. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a combustible gas alarm which has a simple structure and can be used in places with a large amount of oil pollution in the air. It can effectively prevent the oil pollution from solidifying and clogging the alarm, and can make the solidified oil pollution fluid again.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a combustible gas alarm, including an alarm body, the alarm body including a connecting seat, a circuit board is installed in the connecting seat, a mounting joint is provided below the connecting seat, a sensor is installed in the mounting joint, a sensor cover is connected to the lower part of the mounting joint through a threaded section, a filter assembly is movably connected to the lower part of the sensor cover, the filter assembly includes a clamping ring, a filter net is connected in the clamping ring, a heating assembly is also fixed in the sensor cover, and a gas isolation cover is provided on the outside of the heating wire of the heating assembly.

[0006] Furthermore, the clamping ring is threadedly connected to the bottom of the sensor cover tube.

[0007] Furthermore, a mounting tube is fixed in the middle of the sensor cover tube via a connecting rod, the heating assembly is fixed in the mounting tube, and the gas isolation cover is made of glass material.

[0008] Furthermore, a pressure ring is connected above the filter screen.

[0009] Furthermore, there are three connecting rods, which are evenly fixed on the inner wall of the sensor cover tube in a ring shape.

[0010] Furthermore, the top of the gas isolation cover is provided with an outer spiral rod, the sensor cover is provided with an inner spiral cylinder, and the gas isolation cover is threadedly connected to the inner spiral cylinder of the sensor.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The alarm has a simple structure and can be used in places with large amounts of oil pollution in the air. Through the heating action of the heating component, it can effectively heat the solidified oil on the filter screen to enable it to flow, thus preventing the oil pollution from solidifying and clogging the alarm.

[0013] 2. The filter is directly connected to the clamping ring. Through the pressure of the pressure ring on it and the sensor cover, it can be tightly connected to the clamping ring. When it needs to be cleaned, the pressure ring can be quickly removed from the sensor cover;

[0014] 3. Since the heating wire of the heating component is provided with a gas isolation cover outside, it can effectively isolate the combustible gas and prevent it from being ignited when the concentration of the combustible gas exceeds the standard, thus ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the present invention;

[0016] Figure 2 It is a structural diagram of the clamping ring of the present invention;

[0017] Figure 3 It is a structural diagram of the sensor cover tube of the present invention;

[0018] In the figure: 1. Alarm body; 2. Connecting seat; 3. Inner spiral cylinder; 4. Mounting joint; 5. Outer spiral rod; 6. Sensor cover cylinder; 7. Filter assembly; 8. Snap ring; 9. Filter screen; 10. Gas isolation cover; 11. Mounting cylinder; 12. Press ring; DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] like Figures 1 to 3 A combustible gas alarm shown includes an alarm body 1, which includes a connecting seat 2, a circuit board 3 is installed in the connecting seat 2, a mounting joint 4 is provided below the connecting seat 2, a sensor 5 is installed in the mounting joint 4, a sensor 5 cover is connected to the lower part of the mounting joint 4 through a threaded section, a filter assembly 7 is movably connected to the lower part of the sensor 5 cover, the filter assembly 7 includes a clamping ring 8, a filter screen 9 is connected to the clamping ring 8, a heating assembly is also fixed in the sensor 5 cover, and a gas isolation cover 10 is provided outside the heating wire of the heating assembly.

[0021] The process of using the present invention is as follows: first, the combustible gas alarm is fixedly installed in the installation area through the alarm body 1, specifically, it is fixedly installed through the connecting seat 2. When detecting combustible gas, if the environment is full of oil (such as food frying workshop, workpiece oil cleaning workshop), the gas will be mixed with a large amount of oil and enter the alarm body 1. After long-term use, the oil will condense. Especially when the ambient temperature is low, the condensed oil will clog the filter holes on the filter 9. At this time, since the sensor 5 of the present invention has a heating component in the cover tube, the heating component is started, the heating component begins to heat up, heats the surrounding air, and makes the condensed oil fluid again, and can drip from the filter holes of the filter 9. Among them, the heating wire of the heating component has a gas isolation cover 10 on the outside to prevent the heating wire temperature from being too high to ignite the combustible gas. In addition, the heating component of the present invention can be started alone or at the same time as the alarm.

[0022] Further, the clamping ring 8 is threadedly connected to the bottom of the sensor 5 cover. Specifically, the clamping ring 8 of the present invention is threadedly connected to the bottom of the sensor 5 cover, wherein the filter 9 is directly placed in the clamping ring 8, and when the clamping ring 8 is threadedly connected, the filter 9 is pressed by the bottom of the sensor 5 cover.

[0023] Further, a mounting tube 11 is fixed to the middle of the sensor 5 cover tube through a connecting rod, the heating assembly is fixed in the mounting tube 11, and the gas isolation cover 10 is made of glass. Specifically, a mounting tube 11 is fixed to the middle of the sensor 5 cover tube through a connecting rod, and the heating assembly is fixed in the mounting tube 11.

[0024] Further, a pressing ring 12 is connected above the filter screen 9. By setting the pressing ring 12, the filter screen 9 can be pressed tighter and more firmly.

[0025] Further, the number of the connecting rods is three, and they are evenly fixed in a ring shape on the inner wall of the housing of the sensor 5. Specifically, the number of the connecting rods is three, and they are evenly fixed in a ring shape on the inner wall of the housing of the sensor 5.

[0026] Furthermore, the top of the gas isolation cover 10 has an outer spiral rod 5, the cover of the sensor 5 has an inner spiral barrel 14, and the gas isolation cover 10 is threadedly connected to the inner spiral barrel 14 of the sensor 5. The wire of the heating wire (not shown) can pass through the top of the outer spiral rod 5 and be connected to the circuit board of the alarm. Specifically, since there is an outer threaded portion at the top of the gas isolation cover 10, it can be fixed in the inner spiral barrel 14 of the cover of the sensor 5 by screwing, which is more convenient when replacing and installing it.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A combustible gas alarm, comprising an alarm body, the alarm body comprising a connection seat, a circuit board is installed in the connection seat, a mounting joint is provided below the connection seat, a sensor is installed in the mounting joint, and the characteristics are: The lower part of the mounting joint is connected to a sensor cover tube via a threaded section, and the lower part of the sensor cover tube is movably connected to a filter assembly, and the filter assembly includes a clamping ring, and a filter net is connected to the clamping ring. A heating assembly is also fixed in the sensor cover tube, and a gas isolation cover is provided on the outside of the heating wire of the heating assembly.

2. A combustible gas alarm according to claim 1, characterized in that: The clamping ring is threadedly connected to the bottom of the sensor cover tube.

3. A combustible gas alarm according to claim 2, characterized in that: A mounting tube is fixed in the middle of the sensor cover tube via a connecting rod, the heating assembly is fixed in the mounting tube, and the gas isolation cover is made of glass material.

4. A combustible gas alarm according to claim 3, characterized in that: A pressure ring is also connected above the filter screen.

5. A combustible gas alarm according to claim 4, characterized in that: There are three connecting rods, which are evenly fixed on the inner wall of the sensor cover tube in a ring shape.

6. A combustible gas alarm according to claim 5, characterized in that: The top of the gas isolation cover is provided with an outer spiral rod, the sensor cover is provided with an inner spiral cylinder, and the gas isolation cover is threadedly connected in the inner spiral cylinder of the sensor.

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