Explosion-proof gas alarm

Abstract

The utility model discloses an explosion-proof gas alarm which comprises an alarm assembly, and an anti-interference assembly is arranged at the position of a gas detection port of the alarm assembly. The alarm assembly comprises a gas detector, a display panel fixed on the top surface of the gas detector, and an explosion-proof housing screwed on the outer ring of the gas detector through threads. According to the technical scheme, the anti-interference assembly is arranged at the air inlet port of the anti-explosion gas alarm, the servo fan in the air inlet pipeline is used for actively sucking air, the detection sensitivity of the alarm is improved, the conical dust filter bag and the air inlet screen plate on the front side of the air inlet pipeline can filter the sucked air, and the anti-interference effect of the anti-explosion gas alarm is improved. According to the detector, dust and sundries carried by gas are prevented from entering the detector, the interior of the detector is blocked, and the detection sensitivity is reduced, meanwhile, the drying cylinder arranged in the gas inlet pipeline can absorb moisture contained in the sucked gas, and misjudgment caused by the fact that the gas entering the detector contains moisture is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas alarm instrument technical field, concretely relates to an explosion -proof gas alarm. BACKGROUND

[0002] The explosion -proof gas alarm is the shell that sets up the rigidity that hardness and rigidity are bigger at the outer surface of general gas detector, and it mainly is applied in the production or storage area of dangerous goods factory, it can convert the combustible gas concentration of scene into digital signal, and is sent to the gas alarm controller in the safe area, to reach the purpose of monitoring the combustible gas concentration of scene. The gas alarm needs to be monitored in the environment of less steam, oil fume and relatively low humidity, and too much moisture and the impurities of air will influence the detection sensitivity of alarm, and the alarm cannot be installed in the place of gas inlet, air fan and the like, so that the air intake of alarm becomes small, and the monitoring range becomes small, thereby needing to install multiple alarms in the specified area. SUMMARY

[0003] The utility model discloses a technical scheme of explosion -proof gas alarm to solve the deficiency in the background art. In order to solve the drawbacks and defects in the background art, the technical scheme has the following contents:

[0004] Including the alarm component, the gas detection mouth position of alarm component is provided with anti -interference component,

[0005] The alarm component includes a gas detector, a display panel fixed to the top surface of the gas detector, and an explosion -proof shell screwed on the outer circle of the gas detector, the front end surface of the gas detector is provided with a gas receiving port, and the left side surface of the gas detector is fixedly connected with an audible -visual alarm,

[0006] The anti -interference component includes an air inlet pipeline screwed on the outer circle of the gas receiving port, a servo fan fixed in the rear section of the air inlet pipeline inner cavity, and a conical dust filter bag clamped in the front side area of the air inlet pipeline inner cavity, and a drying cylinder is installed in the rear end port of the conical dust filter bag.

[0007] As a preferred scheme of the utility model: the rear end surface of the air inlet pipeline is fixedly connected with an internal thread sleeve, and the inner side wall of the internal thread sleeve is provided with a screw thread.

[0008] As a preferred scheme of the utility model: the outer circle surface of the gas receiving port is provided with a screw line on the front side, which is matched with the screw thread of the internal thread sleeve.

[0009] As one preferred scheme of the utility model, a gas inlet net plate is fixedly connected to the front end port of the gas inlet pipeline, the front end surface of the gas inlet net plate is flush with the front end surface of the gas inlet pipeline, and the inside of the gas inlet net plate is hollowed out with 12-16 gas inlets.

[0010] As one preferred scheme of the utility model, a clamping groove is arranged at the front section of the inner cavity side wall of the gas inlet pipeline, and a clamping hoop that is clamped with the clamping groove is fixed to the rear section of the outer ring surface of the conical dust filter bag.

[0011] As one preferred scheme of the utility model, four fixed plates are fixed in a ring array on the rear section of the inner cavity side wall of the gas inlet pipeline, and the front side end surface of the fixed plate is connected with the rear side surface of the shell of the servo fan through screws.

[0012] As one preferred scheme of the utility model, a fixed ring is fixedly connected to the middle section of the outer ring of the drying cylinder, the rear end surface of the fixed ring is flush with the rear end surface of the conical dust filter bag, and the outer ring surface of the fixed ring is fixedly connected with the inner cavity side wall of the conical dust filter bag.

[0013] As one preferred scheme of the utility model, 50-70 through holes for gas circulation are arranged inside the drying cylinder.

[0014] In the above technical scheme, the utility model provides technical effects and advantages:

[0015] The anti-interference assembly is arranged at the gas inlet port of the explosion-proof gas alarm, the servo fan inside the gas inlet pipeline actively inhales gas, the detection sensitivity of the alarm is improved, the conical dust filter bag and the gas inlet net plate at the front side of the gas inlet pipeline can filter the inhaled gas, prevent dust and sundries in the gas from entering the inside of the detector, cause the inside of the detector to be blocked and reduce the detection sensitivity, and the drying cylinder arranged inside the gas inlet pipeline can absorb the moisture contained in the inhaled gas, prevent the gas entering the inside of the detector from having moisture and cause misjudgment. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments or prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can be obtained by those skilled in the art according to these drawings.

[0017] Figure 1 It is a schematic view of the combination of the gas alarm and the anti-interference assembly.

[0018] Figure 2 It is a schematic view of the gas alarm.

[0019] Figure 3Anti-interference assembly exploded view after disassembly.

[0020] Attached Figure 1 - Attached Figure 3 The description of each part marked with a number in the figure:

[0021] 1, alarm assembly; 11, gas detector; 12, gas receiving port; 13, explosion-proof shell; 14, display panel; 15, audible and visual alarm; 2, anti-interference assembly; 21, air inlet pipeline; 22, servo fan; 23, internal thread sleeve; 24, fixed plate; 25, fixed ring; 26, drying cylinder; 27, conical dust filter bag; 28, air inlet screen. DETAILED DESCRIPTION

[0022] In order to make the technical scheme and implementation of the utility model more clearly explained and described, the following describes several preferred embodiments for implementing the technical scheme of the utility model.

[0023] The following description is essentially exemplary and is not intended to limit the disclosure, application and use. It should be understood that in all these drawings, the same or similar reference numerals indicate the same or similar parts and features. Each drawing only schematically represents the concept and principle of the embodiment of the disclosure, and does not necessarily show the specific size and its proportion of each embodiment of the disclosure. In a particular part of a particular drawing, a particular part may be exaggerated to illustrate the relevant details or structures of the embodiment of the disclosure. The disclosures of the various publications, patents and published patent specifications referred to herein are incorporated by reference in their entirety, and the technical scheme of the utility model will be described clearly and completely in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model.

[0024] Embodiment, a preferred technical scheme of an explosion-proof gas alarm:

[0025] Referring to the drawings attached to the specification: Figure 1 As shown: including alarm assembly 1, the gas detection port position of alarm assembly 1 is provided with anti-interference assembly 2;

[0026] Referring to the drawings attached to the specification: Figure 2 As shown: alarm assembly 1 includes gas detector 11, display panel 14 fixed on the top surface of gas detector 11, and explosion-proof shell 13 screwed on the outer circle of gas detector 11, the front end surface of gas detector 11 is provided with gas receiving port 12, and audible and visual alarm 15 is fixedly connected to the left side surface of gas detector 11;

[0027] Referring to the drawings attached to the specification: Figure 3As shown: anti-interference assembly 2 includes a gas inlet pipe 21 screwed on the outer ring of the front end of the gas receiving port 12, a servo fan 22 fixed in the rear section of the inner cavity of the gas inlet pipe 21, and a conical dust filter bag 27 clamped in the front side area of the inner cavity of the gas inlet pipe 21, and a drying cylinder 26 is installed in the rear end port of the conical dust filter bag 27.

[0028] Referring to the drawings Figure 3 As shown: the rear end surface of the gas inlet pipe 21 is fixedly connected with an internally threaded sleeve 23, the inner side wall of the internally threaded sleeve 23 is provided with a screw thread, and the front side of the outer ring surface of the gas receiving port 12 is provided with a screw line which is adapted to the screw thread of the internally threaded sleeve 23.

[0029] Referring to the drawings Figure 3 As shown: a gas inlet mesh plate 28 is fixedly connected in the front end port of the gas inlet pipe 21, the front end surface of the gas inlet mesh plate 28 is flush with the front end surface of the gas inlet pipe 21, the inside of the gas inlet mesh plate 28 is hollowed out with 12-16 gas inlets, the front section position of the inner cavity side wall of the gas inlet pipe 21 is provided with a clamping groove, and the outer ring surface of the rear section of the conical dust filter bag 27 is fixedly provided with a clamping ring which is clamped with the clamping groove.

[0030] Referring to the drawings Figure 3 As shown: four fixed pieces 24 are fixed in an annular array on the rear section of the inner cavity side wall of the gas inlet pipe 21, the front side end surface of the fixed piece 24 is connected with the rear side surface of the shell of the servo fan 22 through a screw; a fixed ring 25 is fixedly connected with the middle section of the outer ring of the drying cylinder 26, the rear end surface of the fixed ring 25 is flush with the rear end surface of the conical dust filter bag 27, and the outer ring surface of the fixed ring 25 is fixedly connected with the inner cavity side wall of the conical dust filter bag 27.

[0031] According to the above-mentioned preferred technical scheme, the working process of the technical scheme is described:

[0032] The four corners on the shell of the gas detector 11 are installed in the detection area through screws, the gas inlet pipe 21 is installed on the alarm assembly 1 through the screw line and screw thread between the internally threaded sleeve 23 and the gas receiving port 12, the servo fan 22 is powered on through the electric wire which is externally connected to the power supply end, and the inside and outside of the gas inlet pipe 21 is sucked and transported to the inside of the gas detector 11 for monitoring.

[0033] After the gas passes through the gas inlet mesh plate 28, the bulk impurities are shielded, and the conical dust filter bag 27 shields the smaller particles in the gas, until the gas passes through the conical dust filter bag 27 and enters the inside of the drying cylinder 26, the moisture contained in the gas is absorbed by the drying cylinder 26, so that the gas with less dust is transported to the gas detector 11 by the servo fan 22, the gas detector 11 detects the gas to determine whether there is flammable and explosive gas, and the audible and visual alarm 15 is used to issue audible and visual reminders.

[0034] Certain exemplary embodiments of this application are described herein by way of illustration. It should be understood that to those skilled in the art, upon consideration of this disclosure, various modifications could be practiced without departing from the spirit and scope of the application. Thus, the foregoing description is by way of example only, and is not intended to be limiting.

Claims

1. An explosion-proof gas alarm comprising an alarm assembly (1), characterised in that: The gas detection port position of the alarm assembly (1) is provided with an anti-interference assembly (2); The alarm assembly (1) comprises a gas detector (11), a display panel (14) fixed on the top surface of the gas detector (11), and an explosion-proof shell (13) screwed on the outer circle of the gas detector (11), the front end surface of the gas detector (11) is provided with a gas receiving port (12), and the left side surface of the gas detector (11) is fixedly connected with an audible and visual alarm (15); The anti-interference assembly (2) comprises an air inlet pipeline (21) screwed on the front end of the outer circle of the gas receiving port (12), a servo fan (22) fixed in the rear section of the inner cavity of the air inlet pipeline (21), and a conical dust filter bag (27) clamped in the front side area of the inner cavity of the air inlet pipeline (21), and a drying cylinder (26) is installed in the rear end port of the conical dust filter bag (27).

2. An explosion-proof gas alarm according to claim 1, characterized in that: The rear end surface of the air inlet pipeline (21) is fixedly connected with an internal thread sleeve (23), and the inner side wall of the internal thread sleeve (23) is provided with a screw thread.

3. The explosion-proof gas alarm of claim 1, wherein: The outer circle surface of the gas receiving port (12) is provided with a screw line which is matched with the screw thread of the inner side wall of the internal thread sleeve (23).

4. The explosion-proof gas alarm of claim 1, wherein: A piece of air inlet mesh plate (28) is fixedly connected in the front end port of the air inlet pipeline (21), the front end surface of the air inlet mesh plate (28) is flush with the front end surface of the air inlet pipeline (21), and the inside of the air inlet mesh plate (28) is hollowed out with 12-16 air inlets.

5. The explosion-proof gas alarm of claim 1, wherein: The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove.

6. The explosion-proof gas alarm of claim 1, wherein: The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove.

7. The explosion-proof gas alarm of claim 1, wherein: The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove.

8. The explosion-proof gas alarm of claim 1, wherein: The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove. The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove. The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove. The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove. The inner cavity side wall of the air inlet pipeline (21) is provided with a clamping groove at the front section position, and the outer circle surface of the conical dust filter bag (27) is fixedly connected with a clamping groove.

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