Uniform dust diffusion device for dust fall test box

Abstract

The utility model discloses a dust falling test chamber dust uniform diffusion device which comprises a dust falling test chamber body, an interlayer is arranged in the dust falling test chamber body, an electromagnetic coil is arranged in the interlayer, the inner wall of the dust falling test chamber body is fixedly connected with a supporting frame, the supporting frame is of a rectangular structure in an overhead view, the supporting frame is of a hollow structure, and the supporting frame is of a hollow structure. The top side of the supporting frame is fixedly connected with a sleeve seat, the top of the supporting frame is movably connected with a test article placing net, the electromagnetic coils are arranged in a bilateral symmetry mode about the bisector of the test article placing net, the top end of the dust fall test box body is provided with a powder box, a discharging pipe is obliquely arranged in the powder box, and a high-pressure fan is arranged on the inner side of the discharging pipe. The bottom of the powder box is connected with a connecting pipe, the lower end of the connecting pipe is connected with the dust fall test box body, and the top end of the connecting pipe corresponds to the discharging pipe and the high-pressure fan in position. The device can realize uniform diffusion of the powder, so that a test sample is ensured to be in uniform contact with the powder, and the test precision is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of dust settling test chambers, specifically a dust uniform diffusion device for a dust settling test chamber. Background Technology

[0002] A dust test chamber is a device used to simulate the impact of dust in the natural environment on products. It is mainly used to test the protective capabilities of a product's casing and its performance in dusty environments. This equipment is widely used in industries such as automotive, electronics, and construction to evaluate a product's ability to resist external environmental erosion.

[0003] Currently, the diffusion of powder in dust test chambers is usually achieved through fans or mechanical vibration. However, these two methods have poor powder diffusion effects, are prone to clogging, and can affect the uniformity of dust diffusion, thus requiring improvement. Utility Model Content

[0004] The purpose of this invention is to provide a dust uniform diffusion device for a dust suppression test chamber, so as to solve the problem of poor powder diffusion effect in dust suppression test chambers mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dust suppression test chamber dust uniform diffusion device, comprising a dust suppression test chamber body, an internal interlayer provided in the dust suppression test chamber body, an electromagnetic coil provided inside the interlayer, a support frame fixedly connected to the inner wall of the dust suppression test chamber body, a test sample placement net movably connected to the top of the support frame, the electromagnetic coil being symmetrically arranged about the bisector of the test sample placement net, a powder box provided at the top of the dust suppression test chamber body, a feeding pipe inclinedly provided inside the powder box body, a high-pressure blower provided inside the feeding pipe, a connecting pipe connected to the bottom of the powder box body, the lower end of the connecting pipe being connected to the dust suppression test chamber body, and the top end of the connecting pipe corresponding to the positions of the feeding pipe and the high-pressure blower.

[0006] Preferably, the support frame is a rectangular structure when viewed from above, the support frame is a hollow structure, and a sleeve seat is fixedly connected to the top side of the support frame.

[0007] Preferably, the top of the sleeve seat has a groove, a limiting rod is inserted inside the groove, a connecting spring is fixedly connected to the top of the sleeve seat, and the tops of the connecting spring and the limiting rod are both fixedly connected to the bottom side of the test sample placement net, with the limiting rod located inside the connecting spring.

[0008] Preferably, a vibration motor is installed on the bottom side of the test sample placement net, the outer wall of the vibration motor is protected by a dust cover, and a powder collection hopper is provided at the bottom of the dust reduction test chamber, with a powder discharge valve at the lower end of the powder collection hopper.

[0009] Preferably, one feed pipe is provided on each side of the high-pressure blower, and a powder metering pump and a sealing valve are provided on the feed pipe.

[0010] Preferably, a first crushing motor is installed on the top of the powder box, and a first agitator is connected to one end of the shaft of the first crushing motor. The first agitator is located inside the powder box, and a powder addition port is opened on the top side of the powder box.

[0011] Preferably, a second crushing motor is installed on one side of the connecting pipe, and a second agitator is rotatably connected inside the connecting pipe. One end of the shaft of the second agitator is connected to the shaft of the second crushing motor through a bearing.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) This device can achieve uniform diffusion of powder, thereby ensuring that the test sample is in uniform contact with the powder, thus improving the test accuracy.

[0014] (2) This device sets up an electromagnetic coil inside the dust test chamber. The electromagnetic coil achieves weak magnetic control through alternating current, thereby repeatedly magnetizing the powder, causing the powder particles to rotate and vibrate, improving the diffusion effect, and thus enhancing the uniformity of the powder spatial distribution.

[0015] (3) This device can make the test sample placement net vibrate at high frequency by setting a vibration motor on the bottom side of the test sample placement net, thereby avoiding the clogging of powder on the test sample placement net. The vibration motor, together with the electromagnetic coil, can improve the uniformity of powder distribution. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a dust uniform diffusion device for a dustfall test chamber according to the present invention;

[0017] Figure 2 This is a cross-sectional view of a dust uniform diffusion device for a dust settling test chamber according to the present invention;

[0018] Figure 3 This utility model relates to a dust uniform diffusion device for a dust suppression test chamber. Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 This is a top view of the test sample placement net of the dust uniform diffusion device for a dust settling test chamber according to this utility model;

[0020] Figure 5 This utility model relates to a dust uniform diffusion device for a dust suppression test chamber. Figure 2 Enlarged view of section B in the middle.

[0021] In the diagram: 1. First crushing motor; 2. Powder inlet; 3. Powder hopper; 4. Connecting pipe; 5. Dust suppression test chamber; 6. Test sample placement net; 7. Support frame; 8. Powder collection hopper; 9. Powder discharge valve; 10. Second crushing motor; 11. First agitator; 12. High-pressure blower; 13. Second agitator; 14. Electromagnetic coil; 15. Connecting spring; 16. Limiting rod; 17. Sleeve seat; 18. Vibrating motor; 19. Powder metering pump; 20. Sealing valve; 21. Discharge pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-5This utility model provides a technical solution: a dust uniform diffusion device for a dust settling test chamber, including a dust settling test chamber body 5. The dust settling test chamber body 5 has an internal interlayer, and an electromagnetic coil 14 is installed inside the interlayer. The electromagnetic coil 14 is powered by AC power and controlled by a PLC. The magnetic field strength can be controlled between 0.05-0.2T. A support frame 7 is fixedly connected to the inner wall of the dust settling test chamber body 5. The support frame 7 is a rectangular structure when viewed from above and is a hollow structure. A sleeve seat 17 is fixedly connected to the top side of the support frame 7. This structure can support the test sample placement net 6 by setting the support frame 7. A groove is opened at the top of the sleeve seat 17, and a limiting rod 16 is inserted into the groove. A connecting rod is fixedly connected to the top of the sleeve seat 17. The tops of spring 15, connecting spring 15, and limiting rod 16 are all fixedly connected to the bottom side of test sample placement net 6. The limiting rod 16 is located inside the connecting spring 15. This structure, by setting the connecting spring 15, allows the test sample placement net 6 to have a certain amount of room to move while being connected to the support frame 7. The sleeve seat 17 and the limiting rod 16 can cooperate with the up and down movement of the connecting spring 15, and at the same time, can limit the left and right tilt of the connecting spring 15. The test sample placement net 6 is movably connected to the top of the support frame 7. The vibration motor 18 is installed on the bottom side of the test sample placement net 6. The outer wall of the vibration motor 18 is protected by a dust cover. This structure can prevent dust from entering the interior of the vibration motor 18, thereby ensuring the service life of the vibration motor 18. The bottom of the dust collection test chamber 5 A powder collection hopper 8 is provided, with a powder discharge valve 9 at its lower end. This structure allows excess powder to be discharged after the test via the powder collection hopper 8 and the powder discharge valve 9. A vibration motor 18 drives the test sample placement net 6 to vibrate automatically, thus preventing powder blockage on the test sample placement net 6 from affecting its diffusion. The electromagnetic coil 14 is symmetrically arranged about the bisector of the test sample placement net 6. A powder box 3 is provided at the top of the dust suppression test chamber 5, and a first crushing motor 1 is installed on the top of the powder box 3. One end of the shaft of the first crushing motor 1 is connected to a first agitator 11, which is located inside the powder box 3. A powder addition port 2 is provided on the top side of the powder box 3. This structure allows the first crushing motor 1 to drive the first agitator 11 to crush the powder. The powder box 3 is rotated to prevent powder from clumping inside. An inclined feed pipe 21 is installed inside the powder box 3, with one feed pipe on each side of the high-pressure blower 12. A powder metering pump 19 and a sealing valve 20 are installed on the feed pipe 21. This structure allows the powder metering pump 19 to automatically output a fixed amount of powder, and the sealing valve 20 to automatically open and close the feed pipe 21. The high-pressure blower 12 is installed inside the feed pipe 21. A connecting pipe 4 is connected to the bottom of the powder box 3. A second crushing motor 10 is installed on one side of the connecting pipe 4. A second agitator 13 is rotatably connected inside the connecting pipe 4. One end of the shaft of the second agitator 13 is connected to the shaft of the second crushing motor 10 via a bearing. This structure allows the second crushing motor 10 to drive the second agitator 13 to rotate.The powder passing through the connecting pipe 4 is dispersed by the second agitator 13, preventing agglomeration. The lower end of the connecting pipe 4 connects to the dust suppression test chamber 5, and the upper end of the connecting pipe 4 corresponds to the positions of the feeding pipe 21 and the high-pressure blower 12. The high-pressure blower 12 automatically blows the powder into the powder box 3, improving the diffusion effect. The dust suppression test chamber 5 also includes heating pipes and other accessories in its interlayer to achieve the basic functions of a standard dust suppression test chamber. Samples can be fixed to the test sample placement net 6 using clamps (not shown in the figure).

[0024] Working principle: When using the dust uniform diffusion device of the dust test chamber, first fix the sample to be tested onto the test sample placement net 6. Then, open the powder metering pump 19 and the sealing valve 20. Add an appropriate amount of powder from the powder box 3 into the connecting pipe 4. At the same time, the high-pressure blower 12 starts. The high-pressure blower 12 generates high-pressure airflow to push the powder into the powder box 3. After entering the powder box 3, the powder is repeatedly magnetized under the action of the electromagnetic coil 14, causing the powder particles to rotate and vibrate, quickly diffuse and uniformly contact the test sample. During the test, the test sample placement net 6 vibrates under the drive of the vibration motor 18, thereby avoiding the powder blockage on the test sample placement net 6 and ensuring the downward diffusion effect of the powder.

[0025] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dust uniform diffusion device for a dust settling test chamber, comprising a dust settling test chamber body (5), characterized in that: The dust test chamber (5) has an internal interlayer, and an electromagnetic coil (14) is installed inside the interlayer. A support frame (7) is fixedly connected to the inner wall of the dust test chamber (5). A test sample placement net (6) is movably connected to the top of the support frame (7). The electromagnetic coil (14) is symmetrically arranged about the bisector of the test sample placement net (6). A powder box (3) is installed at the top of the dust test chamber (5). A feeding pipe (21) is inclined inside the powder box (3). A high-pressure blower (12) is installed on the inner side of the feeding pipe (21). A connecting pipe (4) is connected to the bottom of the powder box (3). The lower end of the connecting pipe (4) is connected to the dust test chamber (5). The top end of the connecting pipe (4) corresponds to the positions of the feeding pipe (21) and the high-pressure blower (12).

2. The dust uniform diffusion device for a dust settling test chamber according to claim 1, characterized in that: The support frame (7) is a rectangular structure when viewed from above. The support frame (7) is a hollow structure, and a sleeve seat (17) is fixedly connected to the top side of the support frame (7).

3. The dust uniform diffusion device of the dust fall test chamber according to claim 2, characterized in that: The top of the sleeve seat (17) is provided with a groove, and a limiting rod (16) is inserted inside the groove. A connecting spring (15) is fixedly connected to the top of the sleeve seat (17). The tops of the connecting spring (15) and the limiting rod (16) are both fixedly connected to the bottom side of the test sample placement net (6). The limiting rod (16) is located inside the connecting spring (15).

4. The dust uniform diffusion device of the dust fall test chamber according to claim 1, characterized in that: A vibration motor (18) is installed on the bottom side of the test sample placement net (6). The outer wall of the vibration motor (18) is protected by a dust cover. A powder collection hopper (8) is provided at the bottom of the dust reduction test chamber (5). A powder discharge valve (9) is provided at the lower end of the powder collection hopper (8).

5. The dust uniform diffusion device for a dust settling test chamber according to claim 1, characterized in that: The feed pipe (21) is provided on each side of the high-pressure blower (12), and a powder metering pump (19) and a sealing valve (20) are provided on the feed pipe (21).

6. The dust uniform diffusion device of the dust fall test chamber according to claim 1, characterized in that: The powder box (3) is equipped with a first crushing motor (1) on the top. One end of the shaft of the first crushing motor (1) is connected to a first agitator (11). The first agitator (11) is located inside the powder box (3). A powder addition port (2) is opened on the top side of the powder box (3).

7. The dust uniform diffusion device of the dust fall test chamber according to claim 1, characterized in that: A second crushing motor (10) is installed on one side of the connecting pipe (4), and a second agitator (13) is rotatably connected inside the connecting pipe (4). One end of the shaft of the second agitator (13) is connected to the shaft of the second crushing motor (10) through a bearing.

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