Gas alarm detector convenient for replacing detection head

Abstract

The utility model discloses a gas alarm detector convenient to replace a detection head, comprising a detector main body, the front side of the detector main body is fixedly connected with a display, the left side of the detector main body is fixedly connected with a power interface, and the detector main body is installed at a designated position through an installation assembly. Power-on connection work can be carried out through the power interface, the anti-falling mechanism is pulled downwards to be separated from the air inlet detection head, the anti-falling mechanism is turned forwards through the rotary fixing assembly, the air inlet detection head is pulled to be separated from the connecting block and the limiting sealing mechanism for replacement, and the anti-falling mechanism and the rotary fixing assembly are reset. The air inlet detection head is pulled through resilience force of the anti-falling mechanism to extrude the limiting sealing mechanism, so that sealing installation work can be completed, the purpose of conveniently and rapidly replacing and installing the detection head in the gas alarm detector is achieved, and the situation that the dismounting mode of the detection head installed through threads is tedious is avoided. And the problems that the detection head cannot be installed and gas leaks after the thread is loosened are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas alarm detectors, in particular to a gas alarm detector which is convenient for replacing a detection head. Background Technique

[0002] A gas alarm detector is an instrument for detecting gas concentration. The instrument is applicable to dangerous places where combustible or toxic gases exist, and can continuously detect the content within the lower explosion limit of the measured gas in the air for a long time. It can be widely used in various industries such as gas, petrochemical, metallurgy, iron and steel, coking, and electric power where combustible or toxic gases exist, and is an ideal monitoring instrument to ensure property and personal safety.

[0003] The detection head in the gas alarm detector mainly collects external air and then conducts intake detection work. After the detection head is used for a long time, the detection head needs to be replaced.

[0004] At present, the connection method between the detection head and the detector is mostly threaded connection, and the disassembly method of the threaded-mounted detection head is relatively cumbersome. Usually, professional disassembly tools are required, and the thread is prone to problems such as slipping teeth after long-term use. After the teeth slip, problems such as the detection head being unable to be installed and gas leakage will occur. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a gas alarm detector which is convenient for replacing a detection head to solve the problems put forward in the above background technique.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A gas alarm detector which is convenient for replacing a detection head includes a detector main body. A display is fixedly connected to the front surface of the detector main body, a power interface is fixedly connected to the left side of the detector main body, an alarm is fixedly connected to the right side of the detector main body, a connection block is fixedly connected to the surface of the detector main body, an intake detection head is slidably connected to the inner wall of the connection block, a limit and sealing mechanism is arranged inside the connection block, a rotation and fixing component is arranged on the surface of the connection block, an anti-detachment mechanism is arranged below the connection block, and a mounting component is arranged on the back surface of the detector main body.

[0008] Preferably, the limit and sealing mechanism is composed of a limit ring and a sealing gasket. The limit ring is fixedly connected to the inner wall of the connection block, the sealing gasket is fixedly connected to the bottom surface of the limit ring, and the sealing gasket overlaps with the inner wall of the connection block.

[0009] Preferably, the rotation fixing assembly is composed of a fixing shaft, a fixing ring and a connecting ring. The fixing shaft is fixedly connected to the surface of the connecting block. The inner wall of the fixing ring is rotatably connected to the surface of the fixing shaft, and the fixing ring is rotatably connected to the surface of the connecting block. The connecting ring is fixedly connected to the bottom surface of the fixing ring.

[0010] Preferably, the anti-detachment mechanism is composed of a limiting shaft, a connecting plate, an anti-detachment ring and a spring. The limiting shaft is slidably connected to the inner wall of the connecting ring. The connecting plate is fixedly connected to the bottom end of the limiting shaft. The anti-detachment ring is fixedly connected to the inner wall of the connecting plate, and the inner wall of the anti-detachment ring abuts against the air intake detection head. The spring is fixedly connected to the bottom surface of the connecting ring and the top surface of the connecting plate.

[0011] Preferably, the installation assembly is composed of an installation plate and installation holes. The installation plate is fixedly connected to the back surface of the detector main body. The installation holes are penetratingly formed in the front surface of the installation plate.

[0012] Preferably, the number of the fixing shafts is multiple, and the multiple fixing shafts are symmetrically arranged with the vertical center line of the front surface of the connecting block as the axis of symmetry.

[0013] Preferably, the anti-detachment ring is in a circular ring shape and is made of a metal material.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: for the gas alarm detector with a detection head that is convenient to replace, the detector main body is installed at a designated position through the installation assembly, and the power connection work can be carried out through the power interface. Pull the anti-detachment mechanism downward to disengage from the air intake detection head, and flip the anti-detachment mechanism forward through the rotation fixing assembly. Pull the air intake detection head to disengage from the connecting block and the limit sealing mechanism for replacement. Reset the anti-detachment mechanism and the rotation fixing assembly. The air intake detection head is pulled by the resilience of the anti-detachment mechanism to press against the limit sealing mechanism, and then the sealing installation work can be completed. The goal of facilitating the quick replacement and installation of the detection head in the gas alarm detector is achieved, avoiding the problems of cumbersome disassembly of the detection head installed by threads and the inability to install the detection head and gas leakage caused by the thread slipping. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the isometric view of the structure of the present utility model;

[0016] Figure 2 is the enlarged view of the structure at A of the structure of the present utility model;

[0017] Figure 3 is the partial structural sectional view of the structure of the present utility model;

[0018] Figure 4 is the enlarged view of the structure at B of the structure of the present utility model.

[0019] In the figure: 1. Detector main body; 2. Display; 3. Power interface; 4. Alarm; 5. Connecting block; 6. Intake air detection head; 7. Limiting ring; 8. Sealing gasket; 9. Fixed shaft; 10. Fixed ring; 11. Connecting ring; 12. Limiting shaft; 13. Connecting plate; 14. Anti-disengagement ring; 15. Spring; 16. Mounting plate; 17. Mounting hole. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] Referring to Figures 1-4 , a gas alarm detector facilitating the replacement of a detection head, comprising a detector main body 1. A display 2 is fixedly connected to the front of the detector main body 1. A power interface 3 is fixedly connected to the left side of the detector main body 1. An alarm 4 is fixedly connected to the right side of the detector main body 1. A connecting block 5 is fixedly connected to the surface of the detector main body 1. An intake air detection head 6 is slidably connected to the inner wall of the connecting block 5. A limiting and sealing mechanism is arranged inside the connecting block 5. The limiting and sealing mechanism consists of a limiting ring 7 and a sealing gasket 8. The limiting ring 7 is fixedly connected to the inner wall of the connecting block 5. The sealing gasket 8 is fixedly connected to the bottom surface of the limiting ring 7, and the sealing gasket 8 overlaps with the inner wall of the connecting block 5. By the deformation of the sealing gasket 8 after being extruded, the installation sealing performance of the intake air detection head 6 can be improved, and problems such as air leakage can be avoided. A rotation and fixation assembly is arranged on the surface of the connecting block 5. The rotation and fixation assembly consists of a fixed shaft 9, a fixed ring 10 and a connecting ring 11. The number of the fixed shafts 9 is multiple, and the multiple fixed shafts 9 are symmetrically arranged with the vertical center line of the front of the connecting block 5 as the axis of symmetry for connecting an anti-disengagement mechanism, improving the connection stability. The fixed shaft 9 is fixedly connected to the surface of the connecting block 5. The inner wall of the fixed ring 10 is rotatably connected to the surface of the fixed shaft 9, and the fixed ring 10 is rotatably connected to the surface of the connecting block 5. The connecting ring 11 is fixedly connected to the bottom surface of the fixed ring 10 for connecting the anti-disengagement mechanism, facilitating the flipping of the anti-disengagement mechanism for the replacement work of the intake air detection head 6, and improving the replacement convenience. An anti-disengagement mechanism is arranged below the connecting block 5, and a mounting assembly is arranged on the back of the detector main body 1.

[0022] Specifically, the anti-slip mechanism consists of a limiting shaft 12, a connecting plate 13, an anti-slip ring 14 and a spring 15. The anti-slip ring 14 is in a circular ring shape and is made of metal material. The anti-slip ring 14 made of metal material has higher strength, is not easily deformed or damaged after being subjected to force, and is more durable. The limiting shaft 12 is slidingly connected to the inner wall of the connecting ring 11, the connecting plate 13 is fixedly connected to the bottom end of the limiting shaft 12, the anti-slip ring 14 is fixedly connected to the inner wall of the connecting plate 13, and the inner wall of the anti-slip ring 14 overlaps the air intake detection head 6, the spring 15 is fixedly connected to the bottom surface of the connecting ring 11, and the spring 15 is fixedly connected to the top surface of the connecting plate 13, which is used to pull the air intake detection head 6 upward through the rebound force, thereby improving the installation stability of the air intake detection head 6.

[0023] Specifically, the mounting assembly consists of a mounting plate 16 and a mounting hole 17. The mounting plate 16 is fixedly connected to the back of the detector body 1. The mounting hole 17 is opened through the front of the mounting plate 16 for mounting and fixing the detector body 1, thereby improving the installation flexibility.

[0024] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0025] During use: first, install the detector body 1 at the specified position through the mounting plate 16 and the mounting hole 17, and the power connection can be carried out through the power interface 3. When the air intake detection head 6 needs to be replaced, first, pull the anti-slip ring 14 downward through the connecting plate 13 to disengage from the air intake detection head 6, and at the same time stretch the spring 15 to pull the anti-slip ring 14 to flip forward. The rotation of the anti-slip ring 14 drives the connecting plate 13 and the limiting shaft 12 to rotate forward, and the rotation of the limiting shaft 12 drives the connecting ring 11 and the fixing ring 10 to rotate along the surface of the fixing shaft 9, and pulls the air intake detection head 6 downward to disengage from the connecting block 5 and the sealing gasket 8, so as to complete the disassembly and replacement of the air intake detection head 6. After the replacement is completed, the anti-slip ring 14 is reset, and the connecting plate 13 and the anti-slip ring 14 are pulled upward by the resilience of the spring 15. The movement of the anti-slip ring 14 pushes the air intake detection head 6 to move upward along the inner wall of the connecting block 5 to squeeze the sealing gasket 8, so as to complete the sealing installation of the air intake detection head 6.

[0026] In summary, for the gas alarm detector with a conveniently replaceable detection head, the detector main body 1 is installed at a specified position through the installation component, and power connection work can be carried out through the power interface 3. Pull the anti-disconnection mechanism downward to disengage from the intake air detection head 6, rotate the fixing component to turn the anti-disconnection mechanism forward, pull the intake air detection head 6 to disengage from the connection block 5 and the limit sealing mechanism for replacement, reset the anti-disconnection mechanism and the rotation fixing component, and use the resilience of the anti-disconnection mechanism to pull the intake air detection head 6 to squeeze the limit sealing mechanism, then the sealing installation work can be completed, achieving the goal of facilitating the quick replacement and installation of the detection head in the gas alarm detector, avoiding the cumbersome disassembly method of the detection head installed by threads, and problems such as the inability to install the detection head and gas leakage after the thread slips, which is used to solve the problems raised in the above-mentioned background art.

[0027] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas alarm detector facilitating the replacement of a detection head, comprising a detector main body (1), characterized in that, A display (2) is fixedly connected to the front of the detector body (1), a power interface (3) is fixedly connected to the left side of the detector body (1), an alarm (4) is fixedly connected to the right side of the detector body (1), a connection block (5) is fixedly connected to the surface of the detector body (1), an air intake detection head (6) is slidably connected to the inner wall of the connection block (5), a limit sealing mechanism is arranged inside the connection block (5), a rotation fixing assembly is arranged on the surface of the connection block (5), an anti - detachment mechanism is arranged below the connection block (5), and a mounting assembly is arranged on the back of the detector body (1).

2. The gas alarm detector facilitating the replacement of a detection head according to claim 1, wherein The limit sealing mechanism consists of a limit ring (7) and a sealing gasket (8). The limit ring (7) is fixedly connected to the inner wall of the connection block (5), the sealing gasket (8) is fixedly connected to the bottom surface of the limit ring (7), and the sealing gasket (8) overlaps with the inner wall of the connection block (5).

3. The gas alarm detector for facilitating the replacement of a detection head according to claim 1, characterized in that, The rotation fixing assembly consists of a fixing shaft (9), a fixing ring (10) and a connecting ring (11). The fixing shaft (9) is fixedly connected to the surface of the connection block (5), the inner wall of the fixing ring (10) is rotatably connected to the surface of the fixing shaft (9), and the fixing ring (10) is rotatably connected to the surface of the connection block (5). The connecting ring (11) is fixedly connected to the bottom surface of the fixing ring (10).

4. The gas alarm detector capable of facilitating the replacement of a detection head according to claim 3, characterized in that, The anti - detachment mechanism consists of a limit shaft (12), a connecting plate (13), an anti - detachment ring (14) and a spring (15). The limit shaft (12) is slidably connected to the inner wall of the connecting ring (11), the connecting plate (13) is fixedly connected to the bottom end of the limit shaft (12), the anti - detachment ring (14) is fixedly connected to the inner wall of the connecting plate (13), and the inner wall of the anti - detachment ring (14) overlaps with the air intake detection head (6). The spring (15) is fixedly connected to the bottom surface of the connecting ring (11), and the spring (15) is fixedly connected to the top surface of the connecting plate (13).

5. The gas alarm detector facilitating the replacement of a detection head according to claim 1, wherein, The mounting assembly consists of a mounting plate (16) and mounting holes (17). The mounting plate (16) is fixedly connected to the back of the detector body (1), and the mounting holes (17) are penetrated and opened on the front surface of the mounting plate (16).

6. The gas alarm detector capable of facilitating the replacement of a detection head according to claim 3, wherein The number of the fixing shafts (9) is multiple, and the multiple fixing shafts (9) are symmetrically arranged with the vertical center line of the front surface of the connection block (5) as the axis of symmetry.

7. The gas alarm detector facilitating the replacement of a detection head according to claim 4, characterized in that, The anti - detachment ring (14) is in a circular ring shape and is made of a metal material.

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