Filter for air-breathing smoke-sensing fire detector

Abstract

The utility model belongs to the technical field of smoke-sensing fire detection, and discloses a filter for an air-breathing smoke-sensing fire detector, which comprises a pipe fitting assembly used for ventilation of inlet and outlet air, and further comprises a box cover assembly and a box assembly which are used for being buckled and closed to form a temporary storage space, and the pipe fitting assembly is arranged on the box cover assembly; the box cover assembly comprises a box cover body, two threaded holes are symmetrically formed in the box cover body, bosses are arranged on the circumference of the bottom face of the box cover body, a partition plate is installed on the bottom face of the box cover body, and two lock catches are symmetrically arranged at the two ends of the box cover body. The box assembly comprises a box body. According to the filter for the air-breathing smoke-sensing fire detector, insects which are inhaled accidentally are retained through the arrangement of the temporary storage space, so that blockage is avoided; through the arrangement of buckling and sealing, disassembly, assembly, cleaning and maintenance are facilitated; through the arrangement of separation of the partition plates, airflow straight-through is reduced, and the filtering burden is relieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smoke fire detection, and particularly relates to a filter for an aspirating smoke fire detector. Background Art

[0002] The aspirating fire alarm detector is also called an air sampling fire detector and an early fire detector alarm system, and this detector has very high sensitivity. The air sampling fire detector can be divided into a single-tube type, a double-tube type, and a four-tube type (multi-tube type). Different specifications of air sampling fire detectors are selected according to different environmental requirements. The aspirating smoke fire detector has four working stages, namely warning, action, fire alarm 1, and fire alarm 2.

[0003] The Chinese patent with the publication number CN211044472U discloses an air filtering device applicable to an aspirating smoke fire detection system, which includes: a pipe body, which is a hollow pipe structure with openings at both ends, and external threads are provided at both ends; the openings at both ends are respectively an air inlet and an air outlet; at least one filter net structure, which is located inside the pipe body; a pipe cover, which has an opening at the top, and an internal thread is provided on its inner surface, and the internal thread is adapted to the external thread.

[0004] However, the above patent adopts a direct air flow type. When an insect is accidentally inhaled, it is very easy to be blocked, and the burden on the filter net is greatly increased. Therefore, a new device needs to be designed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a filter for an aspirating smoke fire detector to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A filter for an aspirating smoke fire detector includes a pipe fitting assembly for air inlet and outlet, and also includes a box cover assembly and a box body assembly for buckling and closing to form a temporary storage space. The pipe fitting assembly is installed on the box cover assembly; the box cover assembly includes a box cover body, two threaded holes are symmetrically arranged on the box cover body, a convex platform is arranged on the circumference of the bottom surface of the box cover body, a partition is installed on the bottom surface of the box cover body, and two lock catches are symmetrically arranged at both ends of the box cover body; the box body assembly includes a box body, a sealing ring is arranged on the top inside the box body, and two lock plates are symmetrically arranged at both ends of the top of the box body.

[0008] Further: The pipe fitting assembly includes two symmetrically arranged air pipes, a connecting seat is arranged in the middle of the air pipes, a locking sleeve is installed on the connecting seat, and a filter head is installed at the bottom end of one of the air pipes.

[0009] Further: The connecting seat is threadedly connected to the box cover body and the locking sleeve respectively, and the filter head and the air pipe are connected by plugging.

[0010] Further: Both the box cover body and the box body are made of polypropylene material and are rectangular in shape.

[0011] Further: The partition is made of 204 stainless steel material, and the partition and the box cover body are riveted together.

[0012] Further: The sealing ring is made of natural rubber material, and the sealing ring and the box body are pasted together.

[0013] Compared with the prior art, the beneficial effects are as follows:

[0014] 1. Through the setting of forming a temporary storage space, insects accidentally inhaled are retained, avoiding blockage.

[0015] 2. Through the setting of snap - on closure, it is convenient for disassembly, cleaning and maintenance.

[0016] 3. Through the setting of the partition barrier, the direct flow of air is reduced, and the filtering burden is alleviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a filter for an aspirating smoke fire detector according to the present utility model;

[0018] Figure 2 is a schematic diagram of a box cover assembly of a filter for an aspirating smoke fire detector according to the present utility model;

[0019] Figure 3 is a schematic diagram of a box body assembly of a filter for an aspirating smoke fire detector according to the present utility model;

[0020] Figure 4 is a schematic diagram of a pipe fitting assembly of a filter for an aspirating smoke fire detector according to the present utility model.

[0021] In the reference numerals: 101, box cover body; 102, boss; 103, partition; 104, lock; 105, threaded hole; 201, box body; 202, sealing ring; 203, lock plate; 301, connecting seat; 302, air pipe; 303, locking sleeve; 304, filter head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1 - 4 , a filter for an aspirating smoke fire detector, including a pipe component for air inlet and outlet, and further including a box cover component and a box body component for buckling and closing to form a temporary storage space, and the pipe component is installed on the box cover component.

[0024] In this embodiment: The box cover component includes a box cover body 101. The box cover body 101 is made of polypropylene material and is rectangular in shape. Two threaded holes 105 are symmetrically arranged on the box cover body 101. A boss 102 is arranged on the circumference of the bottom surface of the box cover body 101. A partition 103 is installed on the bottom surface of the box cover body 101. The partition 103 is made of 204 stainless steel material and is riveted to the box cover body 101. Two lock catches 104 are symmetrically arranged at both ends of the box cover body 101. The box cover body 101 is fixedly connected to a connecting seat 301 through the threaded holes 105. The boss 102 cooperates with a sealing ring 202 to increase the seal. Moisture in the air condenses and drips onto the bottom of the box body 201 when it encounters the partition 103;

[0025] In this embodiment: The box body component includes a box body 201. The box body 201 is made of polypropylene material and is rectangular in shape. A sealing ring 202 is arranged at the top inside the box body 201. The sealing ring 202 is made of natural rubber material and is pasted to the box body 201. Two lock plates 203 are symmetrically arranged at both ends of the top of the box body 201. The lock plates 203 of the box body 201 are inserted into the lock catches 104 of the box cover body 101 to connect and fix the box body 201 and the box cover body 101, and the sealing ring 202 is pressed against the boss 102 to ensure the seal;

[0026] In this embodiment: The pipe fitting assembly includes two symmetrically arranged air pipes 302. A connecting seat 301 is arranged between the air pipes 302. The connecting seat 301 is threadedly connected to the box cover body 101 and the locking sleeve 303 respectively. A locking sleeve 303 is installed on the connecting seat 301. A filter head 304 is installed at the bottom end of one of the air pipes 302. The filter head 304 is detachably connected to the air pipe 302. The two air pipes 302 are respectively screwed and fixed to the box cover body 101 by engaging with the threaded holes 105 through the connecting seat 301. Then the external pipelines are respectively connected to the top ends of the air pipes 302, and the locking sleeve 303 is screwed and tightened with the connecting seat 301 for fixation. When inhaling and collecting air, the air flows into the box body 201 from one air pipe 302 along the external pipeline, passes through the filter head 304 and flows out from the other air pipe 302 into the detector.

[0027] Working principle: First, the two air pipes 302 are respectively screwed and fixed to the box cover body 101 by engaging with the threaded holes 105 through the connecting seat 301. Then the external pipelines are respectively connected to the top ends of the air pipes 302, and the locking sleeve 303 is screwed and tightened with the connecting seat 301 for fixation. Then, the lock plate 203 of the box body 201 is inserted into the lock catch 104 of the box cover body 101 to connect and fix the box body 201 and the box cover body 101. The sealing ring 202 is then pressed tightly on the boss 102 to ensure sealing. When inhaling and collecting air, the air flows into the box body 201 from one air pipe 302 along the external pipeline, passes through the bottom of the partition plate 103, passes through the filter head 304 and flows out from the other air pipe 302 into the detector. The moisture in the air condenses and drips onto the bottom of the box body 201 when encountering the partition plate 103. Accidentally inhaled insects will be retained in the box body 201 to avoid blocking the filter head 304. Large particle dust will be blocked by the filter head 304 and fall to the bottom of the box body 201 to avoid entering the detector.

[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. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter for an aspirating smoke fire detector, comprising a pipe fitting assembly for air inlet and outlet, characterized in that: It further includes a lid assembly and a box assembly for buckling and closing to form a temporary storage space, and the pipe fitting assembly is installed on the lid assembly; The lid assembly includes a lid body (101), on which two threaded holes (105) are symmetrically arranged, a boss (102) is arranged on the circumference of the bottom surface of the lid body (101), a partition plate (103) is installed on the bottom surface of the lid body (101), and two lock catches (104) are symmetrically arranged at both ends of the lid body (101); The box assembly includes a box body (201), a sealing ring (202) is arranged at the top inside the box body (201), and two lock plates (203) are symmetrically arranged at both ends of the top of the box body (201).

2. The filter for an aspirating smoke fire detector according to claim 1, characterized in that: The pipe fitting assembly includes two symmetrically arranged air pipes (302), a connecting seat (301) is arranged in the middle of the air pipes (302), a locking sleeve (303) is installed on the connecting seat (301), and a filter head (304) is installed at the bottom end of one of the air pipes (302).

3. The filter for an aspiration smoke fire detector according to claim 2, characterized in that: The connecting seat (301) is respectively threadedly connected to the lid body (101) and the locking sleeve (303), and the filter head (304) and the air pipe (302) are connected by plugging and unplugging.

4. The filter for an aspiration smoke fire detector according to claim 1, wherein: Both the lid body (101) and the box body (201) are made of polypropylene material and are rectangular in shape.

5. A filter for an aspirating smoke fire detector according to claim 1, characterized in that: The partition plate (103) is made of 204 stainless steel material, and the partition plate (103) and the lid body (101) are riveted together.

6. The filter for an aspiration smoke fire detector according to claim 1, wherein: The sealing ring (202) is made of natural rubber material, and the sealing ring (202) and the box body (201) are pasted together.

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