Test box for smoke detection instrument calibration

Abstract

The utility model belongs to the technical field of smoke detection instruments, in particular relates to a test box for smoke detection instrument calibration, and aims to solve the problems that in the background technology, the requirements of large-batch tests cannot be met, and the automation degree is low, the following scheme is provided: the test box comprises a conveyor, dividing strips which are distributed at equal intervals are adhered to a conveying belt of the conveyor, and the dividing strips are arranged on the conveying belt; a box body is installed on the outer wall of the top of the conveyor, and a photoelectric sensor is fixedly connected to the outer wall of one side of the box body. According to the utility model, an ordered test mode is adopted, the test efficiency is improved, the large-batch test requirements are effectively met, different types of smog can be sprayed according to different smog detectors, the use range of the test is improved, the test is flexible and practical, the visual sensor can detect whether the smog detector subjected to the smog detection test can respond or not, and the test efficiency is improved. The unqualified smoke detector can be removed in time, manual judgment is not needed, manpower is saved, and the automation degree is high.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke detection instruments, in particular to a test box for calibrating smoke detection instruments. Background Art

[0002] Smoke detectors are also called independent fire detection alarms. They are devices that can detect smoke generated when a fire occurs in advance and send out early warning signals in a timely manner. They belong to fire detection and induction smoke alarms. Smoke detectors are also an indispensable part of indoor fire prevention.

[0003] After searching, the patent (application number: 202120073656.1) discloses "a smoke detection instrument calibration test chamber". The device has reasonable design, simple operation, good sealing, can generate and mix multiple smoke gases at the same time, and can adjust the test smoke concentration by replenishing and exhausting air to ensure the calibration test effect. The test smoke is discharged after circulation and purification to reduce environmental pollution. However, the device has the following problems during use:

[0004] First, the device calibrates the smoke detection instrument by manually inserting the instrument into the operating hole. This test method has the disadvantage of low efficiency, cannot form an orderly test mode, and cannot meet the test requirements of large quantities;

[0005] In addition, the device can only identify the smoke sensitivity of the smoke detection instrument manually. The operator needs to constantly observe whether each smoke detection instrument can respond in a smoke environment. The whole process is highly dependent on manual labor and has a low degree of automation. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a test box for calibrating a smoke detection instrument, which overcomes the deficiencies of the prior art and effectively solves the problem of not being able to meet large-scale test requirements and having a low degree of automation.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A test box for calibrating a smoke detection instrument comprises a conveyor, a conveyor belt of the conveyor is bonded with equidistantly distributed dividing strips, and a box body is installed on the outer wall of the top of the conveyor, and a photoelectric sensor is fixedly connected to the outer wall of one side of the box body;

[0009] A lifting cylinder is installed on the outer wall of the top of the conveyor, and the piston rod of the lifting cylinder is fixedly connected to a connecting plate, the inner wall of the connecting plate is fixedly connected to fixed pipes distributed at equal distances, and a nozzle is installed on the outer wall of the bottom of the fixed pipe, and a first spray pipe is fixedly connected to the outer wall of the top of the fixed pipe, a main spray square bin is installed on the inner wall of the top of the box, and a second spray pipe is fixedly connected to the outer wall of one side of the main spray square bin;

[0010] The outer wall on the other side of the box body is fixedly connected with a visual sensor by bolts, and a push cylinder is installed on one side of the outer wall at the top of the conveyor, and the piston rod of the push cylinder is fixedly connected with a push head.

[0011] Preferably, a slide is welded on the other side of the top outer wall of the conveyor, and a material collecting platform is arranged at the bottom of the slide.

[0012] Preferably, a smoking pipe is fixedly connected to the inner wall at the top of the box body, and a smoking tube is fixedly connected to the outer wall at the top of the smoking pipe, a smoking pump is fixedly connected to the outer wall at one end of the smoking tube, and an air purifier is installed at the air outlet end of the smoking pump, and the exhaust end of the air purifier is fixedly connected to the exhaust pipe.

[0013] Preferably, soft door curtains are installed at the bottom of the outer walls on both sides of the box.

[0014] Preferably, an observation window is installed on the outer wall of one side of the box.

[0015] Preferably, the outer wall on the other side of the box is fixedly connected to a PLC controller by bolts, and the PLC controller is connected to the photoelectric sensor, the lifting cylinder, the visual sensor, the pushing cylinder, the smoking pump and the air purifier through signal lines.

[0016] Preferably, solenoid valves are installed on the outer walls of the first spray pipe and the second spray pipe.

[0017] Preferably, smoke detectors are placed on the conveyor belt of the conveyor at equal distances.

[0018] The beneficial effects of the utility model are:

[0019] 1. The smoke detector calibration test box designed in this paper is installed on the top of the conveyor for testing the smoke detector. Since the equally spaced partition strips are arranged on the conveyor belt, the smoke detectors can be evenly placed on the conveyor belt and enter the box in sequence for calibration test. The photoelectric sensor can be used to monitor in real time whether the smoke detectors enter the box. This device adopts an orderly test mode, which improves the test efficiency and effectively meets the test requirements of large quantities.

[0020] 2. The main spray chamber of the smoke detection instrument calibration test chamber designed in this paper is mainly used for spraying conventional smoke, which can meet the conventional test requirements. On this basis, the fixed tube is driven downward by the lifting cylinder, and the nozzle at the bottom of the fixed tube can be set just above the corresponding smoke detector. Different types of smoke can be sprayed for different smoke detectors, which increases the scope of use of the test and is flexible and practical.

[0021] 3. The smoke detection instrument calibration test box designed in this paper uses a visual sensor to detect whether the smoke detector can respond after the smoke test. A qualified smoke detector will have a flashing light, while an unqualified one will not. The push cylinder pushes the smoke detector onto the slide, and the unqualified smoke detector can be removed in time without manual judgment, saving manpower and having a high degree of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of the overall structure of a test box for calibrating a smoke detection instrument proposed by the utility model;

[0023] Figure 2 This is a rear view of the overall structure of a test box for calibrating a smoke detection instrument proposed by the utility model;

[0024] Figure 3 This is a bottom view of the overall structure of a test box for calibrating a smoke detection instrument proposed by the utility model;

[0025] Figure 4 The utility model discloses a schematic diagram of the main spray chamber connection structure of a test box for calibrating a smoke detection instrument.

[0026] In the figure: 1. conveyor; 2. dividing strip; 3. box; 4. photoelectric sensor; 5. lifting cylinder; 6. connecting plate; 7. fixing pipe; 8. nozzle; 9. first spray pipe; 10. main spray square bin; 11. second spray pipe; 12. visual sensor; 13. pushing cylinder; 14. pushing head; 15. slide; 16. collecting table; 17. smoking pipe; 18. smoking tube; 19. exhaust pipe; 20. smoking pump; 21. air purifier; 22. soft door curtain; 23. observation window; 24. PLC controller. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Embodiment 1, refer to Figure 1A test box for calibrating a smoke detection instrument includes a conveyor 1, on the conveyor belt of the conveyor 1 are bonded equidistantly distributed dividing strips 2, and a box body 3 is installed on the top outer wall of the conveyor 1, and a photoelectric sensor 4 is fixedly connected to the outer wall of one side of the box body 3.

[0029] In this embodiment, a box 3 for testing the smoke detection instrument is installed on the top of the conveyor 1. Since equidistantly distributed dividing strips 2 are arranged on the conveyor belt of the conveyor 1, the smoke detectors can be evenly placed on the conveyor belt and enter the box 3 in sequence for calibration testing. The photoelectric sensor 4 can be used to monitor in real time whether the smoke detectors have entered the box 3. The device adopts an orderly test mode, improves the efficiency of the test, and effectively meets the requirements of large-scale tests.

[0030] Example 2, refer to Figure 4 A test box for calibrating a smoke detection instrument, a lifting cylinder 5 is installed on the top outer wall of a conveyor 1, and the piston rod of the lifting cylinder 5 is fixedly connected to a connecting plate 6, the inner wall of the connecting plate 6 is fixedly connected to fixed pipes 7 distributed at equal distances, and a nozzle 8 is installed on the bottom outer wall of the fixed pipe 7, a first spray pipe 9 is fixedly connected to the top outer wall of the fixed pipe 7, a main spray square bin 10 is installed on the top inner wall of the box body 3, and a second spray pipe 11 is fixedly connected to the outer wall on one side of the main spray square bin 10.

[0031] In this embodiment, the main spray chamber 10 is mainly used for the spraying of conventional smoke, which can meet conventional test requirements. On this basis, the fixed tube 7 is driven downward by the lifting cylinder 5, and the nozzle 8 at the bottom of the fixed tube 7 can be set directly above the corresponding smoke detector. Different types of smoke can be sprayed for different smoke detectors, which improves the scope of use of the test and is flexible and practical.

[0032] Example 3, refer to Figure 2 A test box for calibrating a smoke detection instrument, the outer wall on the other side of the box body 3 is fixedly connected with a visual sensor 12 by bolts, and a push cylinder 13 is installed on one side of the top outer wall of the conveyor 1, and the piston rod of the push cylinder 13 is fixedly connected with a push head 14.

[0033] In this embodiment, the visual sensor 12 can detect whether the smoke detector can respond after the smoke test. A qualified smoke detector will have a flashing light, while an unqualified one will not. The pushing cylinder 13 pushes the pushing head 14 to push the smoke detector onto the slide 15, so that unqualified smoke detectors can be removed in time without manual judgment, saving manpower and having a high degree of automation.

[0034] Reference Figure 2 A slide 15 is welded on the other side of the top outer wall of the conveyor 1 , and a material collecting platform 16 is arranged at the bottom of the slide 15 .

[0035] Reference Figures 2 to 3 A smoking pipe 17 is fixedly connected to the inner wall of the top of the box body 3, and a smoking tube 18 is fixedly connected to the outer wall of the top of the smoking pipe 17. A smoking pump 20 is fixedly connected to the outer wall of one end of the smoking tube 18, and an air purifier 21 is installed at the air outlet end of the smoking pump 20, and an exhaust pipe 19 is fixedly connected to the exhaust end of the air purifier 21.

[0036] Reference Figure 1 Soft door curtains 22 are installed at the bottom of the outer walls on both sides of the box body 3.

[0037] Reference Figure 1 An observation window 23 is installed on the outer wall of one side of the box body 3.

[0038] Reference Figures 1 to 4 The outer wall of the other side of the box body 3 is fixedly connected with a PLC controller 24 by bolts, and the PLC controller 24 is connected to the photoelectric sensor 4, the lifting cylinder 5, the visual sensor 12, the pushing cylinder 13, the smoking pump 20 and the air purifier 21 through signal lines.

[0039] Reference Figure 4 The outer walls of the first spray pipe 9 and the second spray pipe 11 are both installed with electromagnetic valves.

[0040] Reference Figure 1 , smoke detectors are placed on the conveyor belt of conveyor 1 at equal distances.

[0041] Working principle: The operator can first place all the smoke detectors evenly between the two dividing strips 2 of the conveyor belt of the conveyor 1 to arrange them in order, and use the photoelectric sensor 4 to monitor in real time whether the smoke detectors enter the box 3. In the box 3, the main spray square bin 10 is mainly used for the spray of conventional smoke, and multiple nozzles 8 are used to spray other types of smoke. The fixed tube 7 is driven downward by the lifting cylinder 5, and the nozzle 8 at the bottom of the fixed tube 7 can be set directly above the corresponding smoke detector. Different types of smoke can be sprayed for different smoke detectors. When the smoke detector passes through the box 3, the visual sensor 12 can detect whether the smoke detector can respond after the smoke test. The qualified smoke detector will flash, and the unqualified one will not light up. The push cylinder 13 pushes the push head 14 to push the smoke detector onto the slide 15 to remove the unqualified smoke detector.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test chamber for calibrating a smoke detection instrument, comprising a conveyor (1), characterized in that: The conveyor belt of the conveyor (1) is bonded with equidistantly distributed dividing strips (2), and a box (3) is installed on the top outer wall of the conveyor (1), and a photoelectric sensor (4) is fixedly connected to the outer wall of one side of the box (3); The top outer wall of the conveyor (1) is provided with a lifting cylinder (5), and the piston rod of the lifting cylinder (5) is fixedly connected to a connecting plate (6), the inner wall of the connecting plate (6) is fixedly connected to fixed pipes (7) distributed at equal distances, and the bottom outer wall of the fixed pipe (7) is provided with a nozzle (8), the top outer wall of the fixed pipe (7) is fixedly connected to a first spray pipe (9), the top inner wall of the box body (3) is provided with a main spray square bin (10), and the outer wall of one side of the main spray square bin (10) is fixedly connected to a second spray pipe (11); The outer wall on the other side of the box body (3) is fixedly connected to a visual sensor (12) by means of bolts, and a push cylinder (13) is installed on one side of the outer wall at the top of the conveyor (1), and a push head (14) is fixedly connected to the piston rod of the push cylinder (13).

2. A smoke detection instrument calibration test box according to claim 1, characterized in that: A slide (15) is welded to the other side of the top outer wall of the conveyor (1), and a material collecting platform (16) is arranged at the bottom of the slide (15).

3. A smoke detection instrument calibration test box according to claim 1, characterized in that: A smoking pipe (17) is fixedly connected to the inner wall of the top of the box body (3), and a smoking tube (18) is fixedly connected to the outer wall of the top of the smoking pipe (17). A smoking pump (20) is fixedly connected to the outer wall of one end of the smoking tube (18), and an air purifier (21) is installed at the air outlet end of the smoking pump (20), and an exhaust pipe (19) is fixedly connected to the exhaust end of the air purifier (21).

4. A smoke detection instrument calibration test box according to claim 1, characterized in that: Soft door curtains (22) are installed at the bottom of the outer walls on both sides of the box body (3).

5. The smoke detection instrument calibration test box according to claim 1, characterized in that: An observation window (23) is installed on the outer wall of one side of the box body (3).

6. A smoke detection instrument calibration test box according to claim 1, characterized in that: The outer wall of the other side of the box body (3) is fixedly connected to a PLC controller (24) by means of bolts, and the PLC controller (24) is connected to the photoelectric sensor (4), the lifting cylinder (5), the visual sensor (12), the pushing cylinder (13), the smoking pump (20) and the air purifier (21) by means of signal lines.

7. A smoke detection instrument calibration test box according to claim 1, characterized in that: The outer walls of the first spray pipe (9) and the second spray pipe (11) are both installed with electromagnetic valves.

8. The smoke detection instrument calibration test box according to claim 1, characterized in that: Smoke detectors are placed on the conveyor belt of the conveyor (1) at equal distances.

Images