Purging and cleaning device and dust removal system for powder dispersion test box

Abstract

The invention provides a purging and cleaning device for a powder dispersion test box, which can effectively purge and clean residual powder adsorbed on the inner wall of the box body of the test box, and is convenient for quickly and efficiently cleaning flue gas and powder particles in the box body of the test box. The blowing and cleaning device for the powder dispersion test box comprises an air distribution pipe which is supported on the inner wall of a box body of the test box and is connected with an air compressor through an external air inlet pipe; a plurality of airflow nozzles communicated with the air distribution pipe are arranged on the air distribution pipe, and air outlets of the airflow nozzles face the inner wall of the test box body. In addition, the invention further provides a dust removal system for the powder dispersion test box, and the dust removal system comprises the purging cleaning device.

Description

Technical Field

[0001] The present invention relates to a test box cleaning device, in particular to a purging cleaning device for a powder dispersion test box, belonging to the technical field of powder testing. Background Art

[0002] The powder test chamber is mainly used to disperse powder materials (such as powder smoke materials) to form aerosols or similar dispersion systems, supporting concentration, photoelectric effect and other related tests.

[0003] After the powder dispersion test, the powder material needs to be directly discharged or collected for disposal, that is, the powder test chamber needs to be purged and cleaned. Existing powder test chambers use fans installed at the exhaust port to extract smoke and dust through suction. However, this exhaust and dust removal method is not effective for removing powder particles, especially those adsorbed on the inner walls of the test chamber. Summary of the Invention

[0004] In view of this, the present invention provides a purging and cleaning device for a powder dispersion test box, which can effectively purge and clean the residual powder adsorbed on the inner wall of the test box, thereby facilitating the rapid and efficient cleaning of smoke and powder particles inside the test box.

[0005] A purge cleaning device for a powder dispersion test chamber includes: an air distribution pipe supported on the inner wall of the test chamber and connected to an air compressor through an external air inlet pipe;

[0006] The air distribution pipe is provided with a plurality of air flow nozzles connected thereto, and the air outlets of the air flow nozzles face the inner wall of the test box.

[0007] As a preferred embodiment of the present invention, at least one air distribution duct is correspondingly provided on each inner wall surface of the test box body.

[0008] As a preferred embodiment of the present invention, the air distribution pipe is capable of rotating around its own axis.

[0009] As a preferred embodiment of the present invention: the test box body comprises a front cover, a rear cover and two left and right side panels;

[0010] Let the normal direction of the side panels be the Y direction, and the normal directions of the front cover and the rear cover be the X direction;

[0011] One or more air distribution ducts arranged along the X direction are correspondingly provided on the inner wall surface of each side panel;

[0012] The inner walls of the front cover plate and the rear cover plate are each provided with at least one air distribution duct arranged along the Y direction.

[0013] As a preferred embodiment of the present invention, two air distribution pipes located in the same horizontal plane and in the same direction are grouped together and driven by a power unit to rotate around their own axis.

[0014] The power unit is arranged outside the test box body, and includes: a motor, a transmission shaft and two transmission reversing units; the motor is arranged at one end of the transmission shaft, and is used to drive the transmission shaft to rotate around its own axis;

[0015] A transmission reversing unit is provided on each position of the transmission shaft corresponding to the two air distribution pipes in the corresponding group, so as to realize transmission reversal and drive the corresponding air distribution pipe to rotate around its own axis.

[0016] As a preferred embodiment of the present invention: an optical test window is processed on the side panel of the test box body;

[0017] The purging and cleaning device further includes a surrounding airflow branch, which corresponds one-to-one to the optical test window on the side panel and is used to purge and clean the optical test window.

[0018] As a preferred embodiment of the present invention, the surrounding air flow branch is led out by an air flow branch pipe B supported inside the test box body, and the air flow branch pipe B is connected to the air compressor through an air inlet hose after extending out of the test box body;

[0019] The surrounding airflow branch includes: an airflow branch pipe A connected to the airflow branch pipe B, and an annular pipe connected to the airflow branch pipe A; a plurality of airflow nozzles are arranged on the annular pipe at intervals along the circumferential direction, and the airflow nozzles are connected to the annular pipe.

[0020] As a preferred embodiment of the present invention, the airflow branch pipe A is a telescopic pipe.

[0021] In addition, the present invention also provides a dust removal system for a powder dispersion test chamber, comprising a purge cleaning device and an exhaust dust removal unit;

[0022] The purge cleaning device is the purge cleaning device described above;

[0023] The exhaust and dust removal unit comprises an exhaust pipe arranged at the exhaust port of the test box top cover and an exhaust fan connected to the exhaust pipe.

[0024] Beneficial effects:

[0025] (1) The purging and cleaning device of the present invention sprays positive pressure airflow through an airflow nozzle, which can effectively purge and clean the residual powder adsorbed on the inner wall of the test box.

[0026] (2) In the purging and cleaning device of the present invention, the air distribution pipe can rotate around its own axis to improve its purging and cleaning efficiency.

[0027] (3) In the purge cleaning device of the present invention, a surrounding airflow branch is added to clean the optical test window.

[0028] (4) In the purge cleaning device of the present invention, the added surrounding airflow branch can also provide airflow protection for the optical test window during the test, thereby preventing the powder material from being adsorbed on the optical test window during the test and affecting the test accuracy.

[0029] (5) The dust removal system of the present invention includes a purge cleaning device and an exhaust dust removal unit. After each test, the purge cleaning device is turned on to purge and clean the residual powder adsorbed on the inner wall and window of the box, and then cooperates with the exhaust dust removal unit to achieve rapid and efficient cleaning of the flue gas and powder particles after the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the arrangement of the purging cleaning device of the present invention on the box Figure 1 ;

[0031] Figure 2 Schematic diagram of the arrangement of the purging cleaning device of the present invention on the box Figure 2 ;

[0032] Figure 3 Schematic diagram of the arrangement of the purging cleaning device of the present invention on the box Figure 3 ;

[0033] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0034] Figure 5 Schematic diagram of the arrangement of the surrounding airflow branches;

[0035] Figure 6 This is a schematic diagram of the layout of the dust removal system on the powder test chamber;

[0036] Among them: 1-test chamber body, 2-purge cleaning device, 21-air distribution duct, 22-drive shaft, 23-support rod, 24-air flow nozzle, 25-drive reversing unit, 26-motor, 3-exhaust and dust removal unit, 4-fan, 5-optical test window, 6-test chamber top cover, 8-rear cover, 9-side panel, 10-bottom bracket, 11-front cover, 12-surrounding air flow branch, 121-air flow branch pipe A, 122-annular pipe, 123-air flow branch pipe B. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] Example 1:

[0039] This embodiment provides a purging and cleaning device for a powder dispersion test chamber, which can effectively clean and collect the powder medium after the experiment.

[0040] The powder dispersion test box includes a test box body 1 and a test box top cover 6 arranged on the top of the test box body 1 ; wherein the test box body 1 is supported on a bottom bracket 10 .

[0041] The purging and cleaning device is arranged on the test box body 1 and is used to purge and clean different parts inside the test box body 1 .

[0042] like Figure 1-Figure 4 As shown, the purging cleaning device includes an air inlet pipe (usually a hose, not shown in the figure), an air distribution pipe 21 and an air flow nozzle 24 (such as a hood); the air distribution pipe 21 is supported on the inner wall of the test box body 1; one end of the air distribution pipe 21 extends out of the test box body 1 and is connected to the air inlet pipe, and the position where the air distribution pipe 21 extends out of the test box body 1 is used to seal the air path; the air inlet pipe is connected to the air compressor to provide compressed air (that is, the air distribution pipe 21 is connected to the air compressor through the air inlet pipe). Figure 4 As shown, a plurality of air flow nozzles 24 are installed on each air distribution pipe 21 . The air flow nozzles 24 are connected to the air distribution pipe 21 , and the air outlets of the air flow nozzles 24 face the inner wall of the test box body 1 .

[0043] At least one air distribution duct 21 is correspondingly provided on each inner wall surface of the test box body 1 .

[0044] As an example, all air inlet pipes in the purge cleaning device are connected to the same air compressor through a multi-way connector.

[0045] The air compressor provides compressed air to each air distribution pipe 21 through the air inlet pipe. The compressed air in the air distribution pipe 21 is blown out by the air flow nozzle 24 to form a positive pressure airflow toward the inner wall of the test box body 1, and the residual powder adsorbed on the inner wall of the test box body 1 is purged.

[0046] The purging and cleaning device can purge and clean the residual powder adsorbed on the inner wall of the test box body 1, thereby achieving rapid and efficient cleaning of the smoke and powder particles in the test box body 1 after the test.

[0047] Example 2:

[0048] On the basis of the above-mentioned embodiment 1 or embodiment 2, the air distribution pipe 21 can further rotate 360° around its own axis to achieve efficient cleaning of the inner wall of the box.

[0049] Specifically: both ends of the air distribution duct 21 are rotatably supported (such as through bearings) on the test box body 1, and one end extends out of the test box body 1 and is connected to the air inlet duct. The air distribution duct 21 is connected to the air inlet duct at this connection point using a dynamic seal (rotary dynamic seal) (when the air distribution duct 21 rotates around its own axis, the air inlet duct does not rotate).

[0050] The other end of the air distribution pipe 21 extends out of the test box body 1 and is connected to a power unit (such as a rotary motor) for driving the air distribution pipe 21 to rotate 360 ​​degrees around its own axis. As an example, the power unit is supported on the outer wall of the test box body 1 through a support plate.

[0051] Example 3:

[0052] Based on the above-mentioned embodiment 1 or embodiment 2, this embodiment provides a specific arrangement of the air distribution duct 21.

[0053] A plurality of air distribution pipes 21 are distributed at different heights on the test box body 1 to achieve purging and cleaning of different parts inside the test box body 1 .

[0054] As an example, Figure 1-Figure 4 As shown, in this example, the test box body 1 comprises a front cover plate 11 , a rear cover plate 8 and two left and right side plates 9 , wherein the side plates 9 are processed with optical test windows 5 .

[0055] For the convenience of description, let the length of the test box body 1 be the Y direction (i.e. the normal direction of the side panel 9), and the width direction be the X direction (i.e. the normal direction of the front and rear cover panels). Figure 3 shown.

[0056] In this example, six air distribution pipes 21 are arranged inside the test box body 1. Each side panel 9 corresponds to two air distribution pipes 21 arranged along the X direction. On each air distribution pipe 21 arranged along the X direction, a plurality of air flow nozzles 24 are distributed at intervals along the X direction for blowing the inner wall of the corresponding side panel 9. Figure 2 As shown, two air distribution ducts 21 arranged along the X direction corresponding to the inner wall of each side panel 9 are respectively located at the upper and lower parts of the optical test window 5 on the corresponding inner wall.

[0057] The inner wall of the rear cover plate 8 corresponds to an air distribution duct 21 arranged along the Y direction, and the inner wall of the front cover plate 11 corresponds to an air distribution duct 21 arranged along the Y direction; each air distribution duct 21 arranged in the Y direction has a number of air flow nozzles 24 distributed at intervals along the Y direction for blowing the inner wall of the rear cover plate 8 or the front cover plate 11.

[0058] As an example, the air inlet pipe 22 and the air distribution pipe 21 are both stainless steel pipes.

[0059] As an example, the distance between the air distribution duct 21 and the corresponding inner wall of the test box body 1 is 100 mm.

[0060] As an example, Figure 4 As shown, two air flow nozzles 24 are provided at each air flow nozzle installation position on the air distribution duct 21 , one air flow nozzle 24 faces the inner wall surface of the corresponding test box body 1 , and the other air flow nozzle 24 faces the inner bottom surface of the test box body 1 .

[0061] As an example, the middle portion of the air distribution duct 21 (the position between the two ends) is also supported on the inner wall of the test box body 1 by a support rod 23 to improve its stability.

[0062] Example 4:

[0063] This embodiment provides a specific method of providing a power unit to the air distribution duct 21 in the above-mentioned embodiment 3.

[0064] In this example, the six air ducts 21 are divided into three groups, wherein the two X-direction air ducts 21 located at the upper part of the left and right side panels 9 are located at the same horizontal plane as the first group of air ducts, the two X-direction air ducts 21 located at the lower part are located at the same horizontal plane as the second group of air ducts, and the two air ducts 21 arranged along the Y direction are located at the same horizontal plane as the third group of air ducts; each group of two air ducts 21 corresponds to a power unit, that is, one power unit drives the two air ducts 21 to rotate at the same time.

[0065] It can be understood that, in this example, two air distribution ducts located in the same horizontal plane and in the same direction are driven as a group by one power unit.

[0066] In this example, the power unit includes: a motor 26, a transmission shaft 22 and two transmission reversing units 25; the motor 26 is arranged at one end of the transmission shaft 22, for driving the transmission shaft 22 to rotate around its own axis; the transmission shafts 22 in the power units corresponding to the first group of air ducts and the second group of air ducts are arranged along the Y direction, and the transmission shafts 22 in the power unit corresponding to the third group of air ducts are arranged along the X direction.

[0067] A transmission reversing unit 25 is provided on the drive shaft 22 at a position corresponding to each of the two air distribution ducts 21 in the corresponding group, which implements transmission reversal to drive the corresponding air distribution duct 21 to rotate about its own axis. Therefore, when the motor 26 is driven, the two air distribution ducts 21 are driven to rotate through the drive shaft 22 and the transmission reversing unit 25.

[0068] As an example, the transmission reversing unit 25 utilizes a gear reversing transmission mechanism, such as two meshing bevel gears, to achieve reversal. In this case, a bevel gear A is positioned on the transmission shaft 22, corresponding to each of the two air distribution ducts 21 in the corresponding group. The air distribution ducts 21 are connected to the gear shafts of bevel gears B, which mesh with bevel gears A.

[0069] Example 5:

[0070] On the basis of the above-mentioned embodiment 1, 2, 3 or 4, in order to clean the optical test window 5 on the side panel 9 of the test box body 1, the purging and cleaning device is further provided with a surrounding airflow branch 12 for cleaning the optical test window 5.

[0071] The surrounding airflow branches 12 correspond one-to-one with the optical test windows 5 on the side panels 9. Specifically, a surrounding airflow branch 12 is provided for each optical test window 5 to clean the optical glass of each optical test window 5. In this example, three optical test windows 5 are provided on each side panel 9, and the coaxial optical test windows 5 on two side panels 9 constitute a group.

[0072] like Figure 5 As shown, the surrounding airflow branch 12 is led out by an airflow branch pipe B123 supported within the test chamber body 1. After extending out of the test chamber body 1, the airflow branch pipe B123 is connected to the air compressor via an air inlet hose. The airflow branch pipe B123 can be a separate X-axis gas pipeline disposed within the test chamber body 1, or it can be the X-axis air distribution pipe 21 disposed above the optical test window 5 in the aforementioned embodiment 3 (i.e., the surrounding airflow branch 12 is directly led out of the X-axis air distribution pipe 21). It is worth noting that the air distribution pipe 21 provided with the surrounding airflow branch 12 does not have the function of rotating 360° around its own axis.

[0073] The circumferential airflow branch 12 includes: an airflow branch pipe A121 connected to the airflow branch pipe B123, and an annular pipe 122 connected to the airflow branch pipe A121; a plurality of airflow nozzles 24 are arranged at intervals along the circumferential direction on the annular pipe 122, and the airflow nozzles 24 are connected to the annular pipe 122.

[0074] As an example, the diameter of the annular tube 122 is larger than the diameter of the optical test window 5, so as not to affect the optical path of the optical test window 5. Therefore, during the test, the surrounding airflow branch 12 can be activated to provide airflow protection for the optical test window 5, preventing powder material from being adsorbed on the optical test window 5 and affecting the test accuracy.

[0075] As an example, the airflow branch pipe A121 is an electric telescopic pipe that can be controlled to extend and retract by an external control unit; thus, when the test chamber is conducting a test, the airflow branch pipe A121 can be controlled not to extend; when purging and cleaning is required, the airflow branch pipe A121 is controlled to extend so that the airflow nozzle 24 on the annular pipe 122 is directed toward the optical test window 5. After airflow is introduced into the airflow branch pipe B123, the surrounding airflow branch 12 draws airflow to the annular pipe 122, and the optical window cleaning function is achieved through the airflow nozzles 24 arranged around the optical test window 5 on the annular pipe 122.

[0076] The airflow positive pressure blowing cleaning device has the functions of powder cleaning and window cleaning protection, and can meet the cleaning rate of powder particles of more than 90%.

[0077] Example 6:

[0078] On the basis of the above-mentioned embodiment 1, 2, 3 or 4, in order to clean the optical test window 5 on the side panel 9 of the test box body 1, the purging cleaning device is further provided with an air flow spray gun for cleaning the optical test window 5.

[0079] The air flow spray gun is connected to the air compressor. After the test, the air flow spray gun is extended into the test box body 1 (a door is provided on the test box body 1) to clean the optical test window 5. As an example, the air flow spray gun is a telescopic air flow spray gun.

[0080] Example 7:

[0081] This embodiment provides a dust removal system for a powder dispersion test chamber, such as Figure 6 As shown, the dust removal system includes the purging and cleaning device 2 described in the above embodiments 1-6, and also includes an exhaust dust removal unit 3 arranged at the exhaust port of the test box top cover 6. The exhaust dust removal unit 3 includes an exhaust pipe arranged at the exhaust port of the test box top cover 6 and an exhaust fan connected to the exhaust pipe.

[0082] After each test is completed, the purging and cleaning device 2 is started to realize the purging and cleaning function of the residual powder adsorbed on the inner wall and window of the test box body 1, and then cooperates with the exhaust dust removal unit 3 to extract the flue gas and powder particles in the test box body 1 after the test through the exhaust fan, so as to realize the fast and efficient cleaning of the test box.

[0083] As an example, a fan 4 for stirring and dispersing powder is also provided on the bottom surface of the test box body 1. The fan 4 can also be used to assist in dust removal. That is, when cleaning the test box body 1, the purge cleaning device and the fan 4 are started to cooperate with the exhaust dust removal unit 3.

[0084] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications and improvements may be made thereto. Therefore, such modifications and improvements, without departing from the spirit of the present invention, are intended to be within the scope of protection claimed herein.

Claims

1. A purge cleaning device for a powder dispersion test chamber, characterized by: include: An air distribution duct (21) supported on the inner wall of the test chamber body (1) and connected to the air compressor via an external air inlet duct; The air distribution pipe (21) is provided with a plurality of air flow nozzles (24) in communication therewith, and the air outlets of the air flow nozzles (24) face the inner wall of the test box body (1).

2. The purging and cleaning device for a powder dispersion test chamber according to claim 1, characterized in that: At least one air distribution duct (21) is correspondingly provided on each inner wall surface of the test box body (1).

3. The purging and cleaning device for a powder dispersion test chamber according to claim 1 or 2, characterized in that: The air distribution pipe (21) is capable of rotating around its own axis.

4. The purging and cleaning device for a powder dispersion test chamber according to claim 1 or 2, characterized in that: The test box body (1) comprises a front cover (11), a rear cover (8) and two left and right side panels (9); The normal direction of the side plate (9) is the Y direction, and the normal direction of the front cover plate (11) and the rear cover plate (8) is the X direction; One or more air distribution ducts (21) arranged along the X direction are correspondingly provided on the inner wall surface of each side plate (9); The inner walls of the front cover plate (11) and the rear cover plate (8) are each provided with one or more air distribution ducts (21) arranged along the Y direction.

5. The purging and cleaning device for a powder dispersion test chamber according to claim 4, characterized in that: Two air distribution pipes (21) located in the same horizontal plane and in the same direction are regarded as a group and driven by a power unit to rotate around their own axis; The power unit is arranged outside the test box body (1), and comprises: a motor (26), a transmission shaft (22) and two transmission reversing units (25); the motor (26) is arranged at one end of the transmission shaft (22) and is used to drive the transmission shaft (22) to rotate around its own axis; A transmission reversing unit (25) is provided at each position on the transmission shaft (22) corresponding to the two air distribution pipes (21), to achieve transmission reversal to drive the corresponding air distribution pipe (21) to rotate around its own axis.

6. The purging and cleaning device for a powder dispersion test chamber according to claim 1 or 2, characterized in that: An optical test window (5) is machined on the side panel (9) of the test box body (1); The purging and cleaning device further comprises a surrounding airflow branch (12), which corresponds one-to-one with the optical test window (5) on the side panel (9) and is used for purging and cleaning the optical test window (5).

7. The purging and cleaning device for a powder dispersion test chamber according to claim 6, characterized in that: The surrounding air flow branch (12) is led out by an air flow branch pipe B (123) supported inside the test box body (1), and the air flow branch pipe B (123) is connected to the air compressor through an air inlet hose after extending out of the test box body (1); The surrounding airflow branch (12) comprises: an airflow branch pipe A (121) connected to the airflow branch pipe B (123), and an annular pipe (122) connected to the airflow branch pipe A (121); a plurality of airflow nozzles (24) are arranged at intervals along the circumferential direction on the annular pipe (122), and the airflow nozzles (24) are connected to the annular pipe (122).

8. The purging and cleaning device for a powder dispersion test chamber according to claim 7, characterized in that: The airflow branch pipe A (121) is a telescopic pipe.

9. The dust removal system for the powder dispersion test chamber is characterized by: It comprises a purge cleaning device (2) and an exhaust dust removal unit (3); The purge cleaning device (2) is the purge cleaning device according to any one of claims 1 to 8 above; The exhaust and dust removal unit (3) comprises an exhaust pipe arranged at the exhaust port of the test box top cover (6) and an exhaust fan connected to the exhaust pipe.

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