Fire detector with gas filtering structure

Abstract

The utility model discloses a fire detector with a gas filtering structure, which comprises a detector body, a filtering shell, a collecting box, a gas outlet pipe, a gas inlet pipe, a fan and a filter screen, the bottom end of the filtering shell is fixedly connected with the inner bottom end of the detector body, and the top end of the collecting box is detachably connected with the filtering shell. The filtering nets are symmetrically located in the filtering shell and slidably connected with the filtering shell, fixing mechanisms are installed between the filtering nets and the interior of the filtering shell, each fixing mechanism comprises an installation base fixedly connected to the interior of one end of the filtering shell, a carrying plate is installed on one side of each installation base, and extrusion rods are symmetrically and rotatably connected to one side of each installation base; and movable rods are symmetrically and rotationally connected between one side of the extrusion rod and the two ends of the carrying plate, and the bottom end of the extrusion rod is rotationally connected with a fixed plate, so that the effect of quickly mounting and fixing the filter screen is achieved, and convenience is brought to workers during use.

Description

Technical Field

[0001] The utility model relates to the technical field of fire detectors, in particular to a fire detector with a gas filtering structure. Background Art

[0002] An aspirating smoke detector is an automatic fire alarm device that draws air from a protected area into the detector through an air sampling tube for analysis, thereby providing an early warning of a fire.

[0003] Announcement No. CN217640371U discloses a gas filter device for an aspirating fire detector. The device can filter large particles of impurities in the airflow by setting a double-layer filter. At the same time, after a period of use, the filter can be automatically cleaned to prevent the filter from being blocked. The cleaned impurities fall into the collection chamber. The collection chamber can be cleaned regularly. However, the patent still has the following problems in actual use:

[0004] The device automatically cleans the filter to prevent it from being blocked, and the impurities after cleaning fall into the collection chamber. The collection chamber only needs to be cleaned regularly, but the device is not convenient for installing and disassembling the filter, which results in a cumbersome replacement process when the filter is aged and damaged after long-term use.

[0005] A fire detector with a gas filtering structure is proposed to solve the above problems. Utility Model Content

[0006] The technical problems to be solved by the utility model are as follows:

[0007] The problem in the prior art is that the filter is automatically cleaned to prevent the filter from being blocked, and the impurities after cleaning fall into the collection chamber, and the collection chamber can be cleaned regularly. However, the device is not convenient for installing and disassembling the filter, which leads to a cumbersome replacement process when the filter is aged and damaged after long-term use.

[0008] The purpose of the utility model can be achieved through the following technical solutions:

[0009] A fire detector with a gas filtering structure, comprising a detector body, a filter shell, a collection box, an air outlet pipe, an air inlet pipe, a fan and a filter screen, wherein the bottom end of the filter shell is fixedly connected to the inner bottom end of the detector body, the top end of the collection box is detachably connected to the filter shell, one end of the air outlet pipe and the air inlet pipe are symmetrically fixedly connected to the inside of both ends of the filter shell, the fan is fixedly connected to the inside of the air inlet pipe, and the filter screen is symmetrically located inside the filter shell and slidably connected;

[0010] A fixing mechanism is installed between the filter screen and the interior of the filter shell, and the fixing mechanism includes a mounting seat that is fixedly connected to the interior of one end of the filter shell, a carrying plate is installed on one side of the mounting seat, an extrusion rod is symmetrically rotatably connected to one side of the mounting seat, a movable rod is symmetrically rotatably connected between one side of the extrusion rod and two ends of the carrying plate, the bottom end of the extrusion rod is rotatably connected to a fixing plate, the fixing plate and the filter screen are extruded and fixedly connected, a contraction rod is symmetrically fixedly connected between one side of the carrying plate and the mounting seat, a first telescopic spring is sleeved on the outer side wall of the contraction rod, the internal card of the mounting seat is connected to a rotating tube for rotation, one end of the rotating tube is internally threadedly connected to a first screw, and one end of the first screw is fixedly connected to the carrying plate.

[0011] Furthermore, one side of the filter shell is symmetrically fixedly connected to a mounting box, the interior of the mounting box is rotatably connected to a worm gear, one side of the worm gear is meshingly connected to a worm, both ends of the worm gear pass through the mounting box and are fixedly connected to a second screw, one end of the second screw is threadedly connected to an insert tube on the outer wall, one side of the insert tube is snap-fitted and slidably connected to the filter shell, and one end of the insert tube is snap-fitted and fixedly connected to one side of the filter screen.

[0012] Furthermore, a cleaning assembly is installed inside the filter shell, and the cleaning assembly includes a motor fixedly connected to the top of the filter shell, a reciprocating screw is rotatably connected inside the filter shell, a movable sleeve is threadedly connected on the outer wall of the reciprocating screw, brush plates are symmetrically fixedly connected at both ends of the movable sleeve, and through holes are symmetrically opened inside the bottom end of the filter shell.

[0013] Furthermore, a disengagement assembly is symmetrically installed between the collection box and the filter shell, and the disengagement assembly includes a fixing seat fixedly connected to the bottom end of the filter shell, the bottom end of the fixing seat is internally slidably connected to a limiting rod, one end of the limiting rod passes through the collection box card and is fixedly connected, a second telescopic spring is sleeved on the outer wall of the limiting rod, a mounting block is fixedly connected to the outer wall of one end of the limiting rod, a jacket is fixedly connected to one side of the bottom end of the fixing seat, an extrusion block is rotatably connected to the inside of the jacket, and the extrusion block and the mounting block are extrusion-connected.

[0014] Furthermore, a first fixing knob is fixedly connected between the rotating tube and the first screw rod.

[0015] Furthermore, a second fixing knob is fixedly connected between the jacket and the extrusion block.

[0016] Furthermore, one end of the extrusion block is fixedly connected to a pressing rod.

[0017] Beneficial effects of the utility model:

[0018] The rotation of the first screw is driven by rotating the rotating tube, and the rotation of the first screw causes the first screw to move, thereby causing the carrying plate to move. The movement of the carrying plate causes the extrusion rod to rotate through the movable rod, thereby causing the fixing plate to squeeze and fix the filter screen, thereby achieving the effect of quickly installing and fixing the filter screen, which brings convenience to the staff when using it. The rotation of the worm gear drives the rotation of the worm, and the rotation of the worm drives the rotation of the second screw. The rotation of the second screw drives the insertion tube to clamp and fix the inside of one end of the filter screen, thereby further fixing and limiting the filter screen to prevent the filter screen from falling.

[0019] The rotation of the reciprocating screw drives the brush plate through the movable sleeve to clean the filter screen up and down to avoid clogging of the filter screen. The cleaned particulate impurities enter the collection box through the through hole for centralized collection, which is convenient for subsequent cleaning. By loosening the second fixing knob and then pressing the pressing rod through the staff, the extrusion block squeezes the mounting block. At this time, the second telescopic spring contracts, thereby pushing the limit rod to move to clamp and fix the collection box, thereby achieving the effect of quick installation and disassembly of the collection box, which brings convenience to the staff when using it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a cross-sectional view of the overall structure of the filter housing in the utility model;

[0023] Figure 3 This is a sectional view of the overall top view of the fixing mechanism in the utility model;

[0024] Figure 4 It is a schematic diagram of the overall structure of the fixing mechanism in the utility model;

[0025] Figure 5 This is a schematic diagram of the overall structure of the filter housing in the utility model;

[0026] Figure 6 It is an enlarged structural schematic diagram of part A in the utility model.

[0027] In the figure: 1. detector body; 101. filter shell; 102. collection box; 103. air outlet pipe; 104. air inlet pipe; 105. fan; 106. filter screen; 2. fixing mechanism; 201. mounting seat; 202. carrying plate; 203. extrusion rod; 204. movable rod; 205. fixing plate; 206. contraction rod; 207. first telescopic spring; 208. rotating tube; 209. first screw rod; 210. first fixing knob; 212. Mounting box; 213, worm gear; 214, worm; 215, second screw; 216, insert tube; 3, cleaning assembly; 301, motor; 302, reciprocating screw; 303, movable sleeve; 304, brush plate; 305, through hole; 4, disengagement assembly; 401, fixing seat; 402, limiting rod; 403, second telescopic spring; 404, mounting block; 405, clamping sleeve; 406, extrusion block; 407, second fixing knob; 408, pressing rod. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] like Figure 1-6 As shown, a fire detector with a gas filtering structure includes a detector body 1, a filter shell 101, a collection box 102, an air outlet pipe 103, an air inlet pipe 104, a fan 105 and a filter 106, the bottom end of the filter shell 101 is fixedly connected to the inner bottom end of the detector body 1, the top end of the collection box 102 is detachably connected to the filter shell 101, one end of the air outlet pipe 103 and the air inlet pipe 104 are symmetrically fixedly connected to the inside of both ends of the filter shell 101, the fan 105 is fixedly connected to the inside of the air inlet pipe 104, and the filter 106 is symmetrically located inside the filter shell 101 and slidably connected;

[0030] A fixing mechanism 2 is installed between the filter screen 106 and the interior of the filter shell 101, and the fixing mechanism 2 includes a mounting seat 201 fixedly connected to the interior of one end of the filter shell 101, a carrying plate 202 is installed on one side of the mounting seat 201, an extrusion rod 203 is symmetrically rotatably connected to one side of the mounting seat 201, and a movable rod 204 is symmetrically rotatably connected between one side of the extrusion rod 203 and two ends of the carrying plate 202, and a fixing plate 205 is rotatably connected to the bottom end of the extrusion rod 203, and the fixing plate 205 and the filter screen 106 are extruded and fixedly connected, and a contraction rod 206 is symmetrically fixedly connected between one side of the carrying plate 202 and the mounting seat 201, and a first telescopic spring 207 is sleeved on the outer wall of the contraction rod 206, and a rotating tube 208 is internally clamped and rotatably connected to the mounting seat 201, and a first screw 209 is internally threadedly connected to one end of the rotating tube 208, and one end of the first screw 209 is fixedly connected to the carrying plate 202, so as to realize the rapid installation and fixing of the filter screen. The effect of 106 brings convenience to the staff when using it. One side of the filter shell 101 is symmetrically fixedly connected with an installation box 212, and the interior of the installation box 212 is rotatably connected with a worm gear 213, and one side of the worm gear 213 is meshingly connected with a worm 214. Both ends of the worm 214 pass through the installation box 212 and are fixedly connected with a second screw 215. An insert tube 216 is threadedly connected on the outer wall of one end of the second screw 215. One side of the insert tube 216 is stuck and slidably connected to the filter shell 101, and one end of the insert tube 216 is stuck and fixedly connected to one side of the filter screen 106. The rotation of the second screw 215 drives the insert tube 216 to clamp and fix the inside of one end of the filter screen 106, thereby further fixing and limiting the filter screen 106 to prevent the filter screen 106 from falling. A first fixing knob 210 is fixedly connected between the rotating tube 208 and the first screw 209. Through the design of the first fixing knob 210, the first screw 209 is fixed.

[0031] A cleaning assembly 3 is installed inside the filter shell 101, and the cleaning assembly 3 includes a motor 301 fixedly connected to the top of the filter shell 101, and a reciprocating screw rod 302 is rotatably connected inside the filter shell 101. A movable sleeve 303 is threadedly connected to the outer wall of the reciprocating screw rod 302, and brush plates 304 are symmetrically fixedly connected at both ends of the movable sleeve 303. Through holes 305 are symmetrically opened inside the bottom end of the filter shell 101, and the brush plates 304 are driven by the movable sleeve 303 to clean the filter screen 106 up and down to avoid clogging of the filter screen 106. The cleaned particulate impurities enter the collection box 102 through the through hole 305 for centralized collection, which is convenient for subsequent cleaning.

[0032] A detachment assembly 4 is symmetrically installed between the collection box 102 and the filter shell 101. The detachment assembly 4 includes a fixing seat 401 fixedly connected to the bottom end of the filter shell 101. The bottom end of the fixing seat 401 is internally slidably connected to a limiting rod 402. One end of the limiting rod 402 passes through the collection box 102 and is fixedly connected. A second telescopic spring 403 is sleeved on the outer wall of the limiting rod 402. A mounting block 404 is fixedly connected to the outer wall of one end of the limiting rod 402. A jacket 405 is fixedly connected to one side of the bottom end of the fixing seat 401. The jacket 405 An extrusion block 406 is internally rotatably connected, and the extrusion block 406 is extruded and connected to the mounting block 404, thereby pushing the movement of the limiting rod 402 to clamp and fix the collection box 102, thereby achieving the effect of quickly installing and removing the collection box 102, and bringing convenience to the staff when using it. A second fixing knob 407 is fixedly connected between the sleeve 405 and the extrusion block 406. Through the design of the second fixing knob 407, the extrusion block 406 is fixed, and one end of the extrusion block 406 is fixedly connected to a pressing rod 408.

[0033] The working principle of this utility model:

[0034] The detector body 1 is a device used in a gas filter device of an aspirating fire detector disclosed in prior art announcement number CN217640371U. The filter screen 106 is inserted into the filter housing 101. At this time, one end of the filter screen 106 is fitted with the mounting plate 202. Then, the staff loosens the first fixing knob 210 and rotates the rotating tube 208, thereby driving the rotation of the first screw 209. The rotation of the first screw 209 causes the first screw 209 to move, thereby causing the mounting plate 202 to move. The movement of the mounting plate 202 is controlled by the movable rod 204. The squeezing rod 203 rotates, and then the fixing plate 205 squeezes and fixes the filter screen 106, so as to achieve the effect of quickly installing and fixing the filter screen 106, which brings convenience to the staff when using it. By rotating the worm gear 213, the worm 214 is driven to rotate, and the rotation of the worm 214 drives the second screw 215 to rotate. The rotation of the second screw 215 drives the insertion tube 216 to clamp and fix one end of the filter screen 106, thereby further fixing and limiting the filter screen 106 to prevent the filter screen 106 from falling.

[0035] The motor 301 drives the reciprocating screw 302 to rotate, and the rotation of the reciprocating screw 302 drives the brush plate 304 through the movable sleeve 303 to clean the filter 106 up and down to avoid clogging of the filter 106. The cleaned particulate impurities enter the collection box 102 through the through hole 305 for centralized collection, which is convenient for subsequent cleaning. By loosening the second fixing knob 407 and then pressing the pressing rod 408 by the staff, the extrusion block 406 squeezes the mounting block 404. At this time, the second telescopic spring 403 contracts, thereby pushing the movement of the limit rod 402 to clamp and fix the collection box 102, thereby achieving the effect of quickly installing and disassembling the collection box 102, which brings convenience to the staff when using it.

[0036] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A fire detector with a gas filtering structure, comprising a detector body (1), a filter shell (101), a collection box (102), an air outlet pipe (103), an air inlet pipe (104), a fan (105) and a filter screen (106), wherein the bottom end of the filter shell (101) is fixedly connected to the bottom end of the inside of the detector body (1), the top end of the collection box (102) is detachably connected to the filter shell (101), one end of the air outlet pipe (103) and the air inlet pipe (104) are symmetrically fixedly connected to the inside of the two ends of the filter shell (101), the fan (105) is fixedly connected to the inside of the air inlet pipe (104), and the filter screen (106) is symmetrically located inside the filter shell (101) and is slidably connected; It is characterized in that Also includes: A fixing mechanism (2) is installed between the filter screen (106) and the inside of the filter housing (101), and the fixing mechanism (2) comprises a mounting seat (201) fixedly connected to the inside of one end of the filter housing (101), a carrying plate (202) is installed on one side of the mounting seat (201), an extrusion rod (203) is symmetrically rotatably connected to one side of the mounting seat (201), a movable rod (204) is symmetrically rotatably connected between one side of the extrusion rod (203) and two ends of the carrying plate (202), and a fixed rod (204) is rotatably connected to the bottom end of the extrusion rod (203). The fixing plate (205) is extruded and fixedly connected to the filter screen (106); a retractable rod (206) is symmetrically fixedly connected between one side of the carrying plate (202) and the mounting seat (201); a first telescopic spring (207) is sleeved on the outer wall of the retractable rod (206); a rotating tube (208) is internally clamped and rotatably connected to the mounting seat (201); one end of the rotating tube (208) is internally threadedly connected to a first screw rod (209); and one end of the first screw rod (209) is fixedly connected to the carrying plate (202).

2. A fire detector with a gas filtering structure according to claim 1, characterized in that: One side of the filter housing (101) is symmetrically fixedly connected to a mounting box (212); a worm wheel (213) is rotatably connected inside the mounting box (212); one side of the worm wheel (213) is meshingly connected to a worm (214); two ends of the worm (214) penetrate the mounting box (212) and are fixedly connected to a second screw (215); an insert tube (216) is threadedly connected to an outer wall of one end of the second screw (215); one side of the insert tube (216) is snap-fit ​​and slidably connected to the filter housing (101); and one end of the insert tube (216) is snap-fit ​​and fixedly connected to one side of the filter screen (106).

3. A fire detector with a gas filtering structure according to claim 2, characterized in that: A cleaning assembly (3) is installed inside the filter shell (101), and the cleaning assembly (3) comprises a motor (301) fixedly connected to the top of the filter shell (101), a reciprocating screw (302) is rotatably connected inside the filter shell (101), a movable sleeve (303) is threadedly connected to the outer wall of the reciprocating screw (302), brush plates (304) are symmetrically fixedly connected at both ends of the movable sleeve (303), and through holes (305) are symmetrically opened inside the bottom end of the filter shell (101).

4. A fire detector with a gas filtering structure according to claim 3, characterized in that: A detachment assembly (4) is symmetrically installed between the collection box (102) and the filter shell (101), and the detachment assembly (4) comprises a fixing seat (401) fixedly connected to the bottom end of the filter shell (101), a limiting rod (402) is slidably connected inside the bottom end of the fixing seat (401), one end of the limiting rod (402) passes through the collecting box (102) and is fixedly connected, a second telescopic spring (403) is sleeved on the outer wall of the limiting rod (402), a mounting block (404) is fixedly connected to the outer wall of one end of the limiting rod (402), a jacket (405) is fixedly connected to one side of the bottom end of the fixing seat (401), an extrusion block (406) is rotatably connected inside the jacket (405), and the extrusion block (406) is extrusion-connected to the mounting block (404).

5. The fire detector with a gas filtering structure according to claim 1, characterized in that: A first fixed knob (210) is fixedly connected between the rotating tube (208) and the first screw rod (209).

6. The fire detector with a gas filtering structure according to claim 4, characterized in that: A second fixing knob (407) is fixedly connected between the jacket (405) and the extrusion block (406).

7. A fire detector with a gas filtering structure according to claim 6, characterized in that: One end of the extrusion block (406) is fixedly connected to a pressing rod (408).

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