Powder changing mechanism of dustproof test box

Abstract

The utility model relates to the technical field of dustproof test boxes, in particular to a powder changing mechanism of a dustproof test box, which comprises an air blower and a powder return pipe, a first end of the powder return pipe is connected with an air outlet of the air blower, and a second end of the powder return pipe is communicated with an inner container of the dustproof test box. A box body is arranged below a dust collecting hopper of the dustproof test box, the top of the box body is connected with a first pipe body, the bottom of the box body is connected with a second pipe body, the first side of the box body in the horizontal direction is connected with a third pipe body, the second side of the box body in the horizontal direction is connected with a fourth pipe body, and the first pipe body is connected with the dust collecting hopper of the dustproof test box. A plug is in threaded connection with the interior of the second pipe body, the third pipe body and the fourth pipe body are oppositely arranged, the third pipe body is connected with an exhaust inlet of an air blower, an adjusting pipe is in threaded connection with the interior of the fourth pipe body, and a sealing cover is in threaded connection with the end, away from the third pipe body, of the adjusting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of dustproof test boxes, in particular to a powder changing mechanism of a dustproof test box. Background Art

[0002] The structure of the dustproof test box can refer to patent documents such as CN21852594U and CN212441248U. During the dust test, different dusts need to be used for testing. Before replacing other dusts, the dust inside the test box needs to be cleaned first. The inner liner of the test box can be wiped with a rag, but the inside of the fan and the powder return duct is not easy to clean, which will cause the residual powder in the fan and the powder return duct to mix with the replaced powder, affecting the accuracy of the test. Utility Model Content

[0003] In order to solve the problems mentioned in the background technology, the purpose of the utility model is to provide a powder changing mechanism for a dustproof test box.

[0004] In order to achieve the above objectives, the technical solution of the utility model is:

[0005] The powder changing mechanism of the dustproof test box comprises a blower and a powder return pipe, the first end of the powder return pipe is connected to the exhaust port of the blower, the second end of the powder return pipe is connected to the upper part of the inner tank of the dustproof test box, a box body is provided below the dust collecting funnel of the dustproof test box, the top of the box body is connected to the first tube body, the bottom is connected to the second tube body, the first side of the box body in the horizontal direction is connected to the third tube body, and the second side in the horizontal direction is connected to the fourth tube body, the first tube body is connected to the dust collecting funnel of the dustproof test box, the second tube body is threadedly connected with a plug, the third tube body and the fourth tube body are arranged opposite to each other, the third tube body is connected to the air suction port of the blower, the fourth tube body is threadedly connected with an adjusting tube, the end of the adjusting tube away from the third tube body is threadedly connected with a sealing cover, and the adjusting tube can be pressed against the inner wall of the box body and docked with the third tube body.

[0006] Furthermore, a socket is provided on the inner wall of the box body corresponding to the regulating tube, and the regulating tube can be inserted into the socket.

[0007] The beneficial effects of the utility model are as follows: when it is necessary to clean the dust inside the blower and the powder return pipe, the regulating pipe can be connected to the third pipe body, and then the sealing cover can be opened, and the blower can be turned on. The blower absorbs the external airflow through the regulating pipe, and can blow the dust inside itself and the powder return pipe into the inner tank of the dustproof test box, and the dust falls into the box body under the action of gravity. The dust inside the box body can be released by unscrewing the plug, and the dust inside the blower and the powder return pipe can be effectively cleaned. When conducting a dust test, it is only necessary to close the sealing cover and make the regulating pipe leave the third pipe body, so that the blower and the inner tank of the dust test box are connected, and the circulation of dust is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of an embodiment of the utility model.

[0009] Explanation of the accompanying figure numbers: 1. Dustproof test box, 2. Blower, 3. Powder return pipe, 4. Box body, 41. First tube body, 42. Second tube body, 43. Third tube body, 44. Fourth tube body, 45. Socket, 5. Plug, 6. Adjustment tube, 7. Sealing cover. DETAILED DESCRIPTION

[0010] 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 belong to the protection scope of the utility model.

[0011] like Figure 1 As shown, the powder changing mechanism of the dustproof test box includes a blower 2 and a powder return pipe 3, wherein the first end of the powder return pipe 3 is connected to the exhaust port of the blower 2, and the second end of the powder return pipe 3 is connected to the upper part of the inner tank of the dustproof test box 1, and a box body 4 is provided below the dust collecting funnel of the dustproof test box 1, wherein the dust collecting funnel is a conventional component of the dustproof test box 1, and the dust collecting funnel is provided below the inner tank of the dustproof test box 1, and its function is to collect dust in the inner tank of the dustproof test box 1, and the top of the box body 4 is connected to the first tube body 41, the bottom is connected to the second tube body 42, and the right side of the box body 4 is connected to the third tube body 43. A fourth tube body 44 is connected to the left side, the first tube body 41 is connected to the dust collecting funnel of the dustproof test box 1, the second tube body 42 is threadedly connected to a plug 5, the third tube body 43 and the fourth tube body 44 are arranged opposite to each other, the third tube body 43 is connected to the air suction port of the blower 2, the fourth tube body 44 is threadedly connected to an adjusting tube 6, and the end of the adjusting tube 6 away from the third tube body 43 is threadedly connected to a sealing cover 7, the adjusting tube 6 can be pressed against the inner wall of the box body 4 and docked with the third tube body 43, and a socket 45 is provided on the inner wall of the box body 4 corresponding to the adjusting tube 6, and the adjusting tube 6 can be inserted into the socket 45.

[0012] In actual use, when conducting a dust test, it is only necessary to close the sealing cover 7 and make the regulating tube 6 leave the third tube body 43, so that the blower 2 is connected to the inner tank of the dust test box to realize the circulation of dust; when it is necessary to clean the dust inside the blower 2 and the powder return tube 3, the regulating tube 6 can be screwed into the socket 45 to make the regulating tube 6 dock with the third tube body 43, and then the sealing cover 7 is opened, and the blower 2 is turned on. The blower 2 absorbs the external airflow through the regulating tube 6, and can blow the dust inside itself and the powder return tube 3 into the inner tank of the dustproof test box 1, and the dust falls into the box body 4 under the action of gravity. The dust inside the box body 4 can be released by unscrewing the plug 5, which can effectively clean the dust inside the blower 2 and the powder return tube 3.

[0013] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A powder replacement mechanism for a dustproof test box, comprising a blower (2) and a powder return pipe (3), wherein a first end of the powder return pipe (3) is connected to an exhaust port of the blower (2), and a second end of the powder return pipe (3) is connected to an upper portion of an inner liner of the dustproof test box (1), characterized in that: A box body (4) is provided below the dust collecting funnel of the dustproof test box (1); the top of the box body (4) is connected to a first tube body (41), and the bottom is connected to a second tube body (42); the first side of the box body (4) in the horizontal direction is connected to a third tube body (43), and the second side of the box body (4) in the horizontal direction is connected to a fourth tube body (44); the first tube body (41) is connected to the dust collecting funnel of the dustproof test box (1); the second tube body (42) is internally threadedly connected to a plug (5); the third tube body (43) and the fourth tube body (44) are arranged opposite to each other; the third tube body (43) is connected to the air suction port of the blower (2); the fourth tube body (44) is internally threadedly connected to an adjusting tube (6); the end of the adjusting tube (6) away from the third tube body (43) is threadedly connected to a sealing cover (7); the adjusting tube (6) can be pressed against the inner wall of the box body (4) and docked with the third tube body (43).

2. The powder changing mechanism of the dustproof test box (1) according to claim 1, characterized in that: The inner wall of the box body (4) is provided with a socket (45) corresponding to the regulating tube (6), and the regulating tube (6) can be inserted into the socket (45).

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