CN209997641U

CN209997641U - Automatic powder changing device for dust test box

Info

Publication number: CN209997641U
Application number: CN201920362249.5U
Authority: CN
Inventors: 彭国真; 骆善礼; 邱祥春
Original assignee: Jiangsu Baohuiji Precision Technology Co Ltd
Current assignee: Jiangsu Baohuiji Precision Technology Co Ltd
Priority date: 2019-03-20
Filing date: 2019-03-20
Publication date: 2020-01-31
Anticipated expiration: 2029-03-20

Abstract

The utility model belongs to the technical field of dustproof function test equipment, an automatic powder device that trades for dust test box is disclosed, its technical scheme main points are including air-blower and pipeline, pipeline end links to each other with the gas outlet of air-blower, end links to each other with the inner bag in addition, still include dust recovery mechanism and dust replenishment mechanism, dust recovery mechanism includes the induction pipe, contact tube and filter cartridge, induction pipe end links to each other with the filter cartridge, end links to each other with pipeline in addition, be equipped with third shut-off valve on it, contact tube end links to each other with the filter cartridge, end links to each other with pipeline in addition, be equipped with the filter bag in the filter cartridge, the last second shut-off valve that is equipped with of pipeline, dust replenishment mechanism includes storage hopper and passage, the passage end links to each other with the storage hopper, end communicates with pipeline in addition, be equipped with the third shut-off valve on the passage, the inside old dust of automatic collection inner bag has, need not the manual clearance of operating personnel, the convenient and swift effect.

Description

Automatic powder changing device for dust test box

Technical Field

The utility model relates to a dustproof function test equipment's technical field, in particular to kinds of automatic powder changing devices that are used for dust test box.

Background

The dust test is mainly used for testing the dust resistance of equipment, and the principle is that quantitative dust is suspended in the air to simulate a dust-containing environment, then the equipment to be tested is placed in the air, the influence of the suspended dust on the equipment to be tested is observed, the dust concentration is increased, the process of the equipment to be tested, which is invaded by the dust, is accelerated, the dust test belongs to basic methods of the environmental test, and the dust-containing environment is constructed by means of a dust test box.

Chinese patent with publication number CN201852594U discloses dustproof test boxes with improved dust recovery mechanism, which comprises a box body, a cubic or rectangular inner container at the upper part in the box body, a dust recovery mechanism at the lower part in the box body, and an air blower located below the dust recovery mechanism to blow the recovered dust into the inner container again through a conveying pipeline, wherein the dust recovery mechanism comprises a hopper-shaped powder accumulation groove which is basically circular up and down and is formed by four side walls which are formed by bending and connecting a plurality of small parts in a forming way, a square opening at the upper part of the dust accumulation groove corresponds to the periphery of the lower side of the inner container to form a space communicated up and down by being connected with the inner container, and a circular opening at the lower part.

The dust can sink naturally under the action of gravity in the toper ash bucket of inner bag below, leads to the inside dust density of inner bag to reduce, and in order to maintain the inside dust concentration of inner bag, this kind of dustproof test box who has improved dust recovery mechanism is provided with air-blower and pipeline to utilize the air-blower to constantly take away the dust of deposit in the ash bucket bottom, then discharge by the inner bag top, thereby make the dust be in the suspended state all the time.

In the dust test process, the dustproof performance of test equipment under different environments is often required, such as the size and the pH value of dust are changed, the dust inside the inner container needs to be replaced at the moment, for the dustproof test box with the improved dust recovery mechanism, the dust is replaced, especially, the old dust inside the inner container is inconvenient to clean, an operator is required to open the box body and the inner container , the dust inside the inner container is difficult to clean, the dust remained in the air blower and the conveying pipeline cannot be cleaned completely, in addition, , when the old dust is cleaned, the dust is very easy to lift, then the dust is dispersed outside the box body, the laboratory environment is polluted, the operator also wears dustproof clothes, and the dust is prevented from being sucked.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automatic powder devices that trade that are used for dust test box has the inside old dust of automatic collection inner bag, need not the manual clearance of operating personnel, convenient and fast's advantage during the change dust.

The above technical purpose of the present invention can be achieved by the following technical solutions:

A powder automatic changing device for a dust test box comprises an air blower and a conveying pipeline, wherein the end of the conveying pipeline is connected with an air outlet of the air blower, the other end is connected with an inner container, the powder automatic changing device further comprises a powder recovery mechanism and a powder supplementing mechanism, the powder recovery mechanism comprises a lead-in pipe, a lead-out pipe and a filter box, the end of the lead-in pipe is connected with the filter box, the other end is connected with the conveying pipeline, a shutoff valve is arranged on the lead-in pipe, the end of the lead-out pipe is connected with the filter box, the other end is connected with the conveying pipeline, a filter bag is arranged in the filter box, a second shutoff valve is arranged on the conveying pipeline, the lead-in pipe, the second shutoff valve and the lead-out pipe are sequentially arranged along the air flow direction in the conveying pipeline, the powder supplementing mechanism comprises a storage hopper and a guide pipe, the end is connected with the storage hopper, the other end is communicated.

By adopting the technical scheme, when a dust test is carried out, the th shutoff valve and the third shutoff valve are closed, the second shutoff valve is opened, the airflow with the dust flows only through the conveying pipeline, when the dust is replaced, the th shutoff valve is opened, the airflow with the dust flows through the filter box and is filtered and collected by the filter bag, then the th shutoff valve is closed, the second shutoff valve and the third shutoff valve are opened, the dust in the storage hopper enters the inner container through the material guide pipe, the third shutoff valve is closed after the dust is supplemented, the dust test box can normally operate and carry out the test, the old dust in the inner container is automatically collected, manual cleaning of operators is not needed, and the dust replacement is convenient and rapid.

, the filter box comprises a box body and a box cover, a support frame is arranged in the box body, the support frame is arranged along the horizontal direction, a mounting hole is formed in the support frame, a frame is fixedly connected to the opening of the filter bag, the frame is placed at the edge of the mounting hole, the pipe orifice of the leading-in pipe is located above the filter bag, and the pipe orifice of the leading-out pipe is located below the filter bag.

By adopting the technical scheme, the frame is placed on the support frame, so that the filter bag is convenient to take out, and then the old dust collected in the filter bag is treated in a centralized manner; the pipe orifice of the leading-in pipe is positioned above the filter bag, and the pipe orifice of the leading-out pipe is positioned below the filter bag, so that when the old dust is recovered, the air flow wrapped with the dust penetrates through the filter bag from top to bottom, and the filter bag is matched with the self gravity of the filter bag to be stably matched with the support frame.

And , arranging a groove around the edge of the mounting block, embedding the frame in the groove, and enabling the frame to abut against the side wall and the bottom surface of the groove.

Through adopting above-mentioned technical scheme, the frame inlays in the recess, offsets with groove inner wall, can't remove along the horizontal direction to make the frame more stable with being connected of support frame, in addition, the leakproofness of frame and support frame junction also obtains the reinforcing.

, the dust supplementing mechanism further comprises a rotating shaft, a helical blade and a motor, the rotating shaft rotating frame is arranged in the material guide pipe, the rotating shaft and the material guide pipe are coaxially arranged, the end face of the material guide pipe is penetrated by the rotating shaft and is connected with a crankshaft of the motor, the helical blade winds the rotating shaft, and the edge of the helical blade is abutted to the inner wall of the material guide pipe.

Through adopting above-mentioned technical scheme, the motor drive pivot is rotatory, and then drives helical blade and rotate, can accomplish the ration transport to new dust, and the dust volume of supplementarily advancing the inner bag is decided by the number of turns of rotation of pivot.

And , directly connecting the guide pipe with the delivery pipe.

Through adopting above-mentioned technical scheme, the passage directly links to each other with pipeline, and the dust enters into pipeline earlier, then is taken on by the air current in the pipeline and hold in the palm, gets into the inner bag and suspends inside the inner bag, can make the dust better fill in the inner bag.

, the dust collecting device further comprises an air guiding pipeline and a dust guiding pipeline, wherein the end of the air guiding pipeline is connected with the side wall of the dust hopper, the other end is connected with the air inlet of the air blower, the end of the dust guiding pipeline is connected with the bottom end of the dust hopper, the other end is connected with the conveying pipeline, and the dust guiding pipeline is located on the side, facing the side of the air blower, of the guiding pipe.

Through adopting above-mentioned technical scheme, when the power of air-blower is less, if the air-blower is directly flowed through to the dust, then appear the dust easily in a large amount of remaining circumstances in the air-blower, lead to the inside dust concentration greatly reduced of inner bag, probably even block up the air-blower when serious, the event sets up induced air pipeline and induced dust pipeline, makes the dust of deposit in the ash bucket bottom directly fall into pipeline, need not through the air-blower.

, a filter screen is arranged at the end of the air guide pipeline facing the ash bucket .

Through adopting above-mentioned technical scheme, the mouth of intaking department at induced duct sets up the filter screen, intercepts the dust in the gas in the ash bucket, reduces the dust of air-blower of flowing through as far as possible, avoids the dust to remain in the air-blower.

, the middle part of the filter screen protrudes towards the interior of the ash bucket, and the top of the filter screen is coated with a baffle.

Through adopting above-mentioned technical scheme, protruding in the ash bucket towards the filter screen middle part, its bottom downward sloping, the dust is gathered the back on it, can break away from with the filter screen by oneself under the action of gravity, avoids the dust to block up the mesh, then stops by the baffle as for the filter screen top, can not have the dust to get into the mesh.

To sum up, the utility model discloses following beneficial effect has:

1. by arranging the dust recovery mechanism and the dust supplement mechanism, the old dust in the liner can be automatically collected without manual cleaning of an operator, and the dust is convenient and quick to replace;

2. the dust does not pass through the blower in the circulating process, so that a large amount of dust is prevented from remaining in the blower and even blocking the blower.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic structural diagram of a connection part of an air guide pipeline and an ash bucket in the embodiment;

FIG. 3 is a schematic structural view of a filter cassette in the embodiment;

FIG. 4 is a schematic structural view of a dust replenishing mechanism in the embodiment.

In the figure, 1, a blower, 2, a conveying pipeline, 3, a dust recycling mechanism, 4, a dust supplementing mechanism, 5, an air guiding pipeline, 6, a dust guiding pipeline, 7, a liner, 8, a dust hopper, 21, a second shut-off valve, 31, an inlet pipe, 32, a delivery pipe, 33, a filter box, 34, , a shut-off valve, 331, a filter bag, 332, a box body, 333, a box cover, 334, a support frame, 335, an installation hole, 336, a frame, 337, a groove, 338, a hook claw, 339, a reverse pull clamp, 41, a storage hopper, 42, a material guiding pipe, 43, a third shut-off valve, 44, a rotating shaft, 45, a helical blade, 46, a motor, 51, a filter screen, 52 and a baffle.

Detailed Description

The present invention will be described in further detail in with reference to the accompanying drawings.

Example (b):

A device for automatically changing powder used in a dust test box, as shown in figure 1, comprises an air inducing pipeline 5, a blower 1, a dust inducing pipeline 6, a conveying pipeline 2, a dust recovery mechanism 3 and a dust supplement mechanism 4, wherein, the end of the air inducing pipeline 5 is connected with the side wall of a dust hopper 8, the other end is connected with the air inlet of the blower 1, the end of the conveying pipeline 2 is connected with an inner container 7, the other end is connected with the air outlet of the blower 1, the five form a completed circulating air path, the top end of the dust inducing pipeline 6 is connected with the bottom end of the dust hopper 8, and the bottom end is connected with the conveying pipeline 2 and is used for guiding the dust deposited at the bottom of the dust hopper 8 into the air path.

As shown in FIG. 2, a filter screen 51 is fixed to the end of the air duct 5 facing the ash hopper 8 , and the middle of the filter screen 51 protrudes toward the interior of the ash hopper 8. the top of the filter screen 51 is covered by the baffle 52 and is tightly attached to the filter screen 51 to prevent dust from passing therethrough.

The air in the hopper 8 enters the blower 1 through the draft tube 5 and is filtered to remove most of the dust as it passes through the screen 51. After a lot of dust is accumulated at the bottom of the filter screen 51, the dust automatically falls under the action of gravity, and the meshes of the filter screen 51 cannot be blocked.

As shown in fig. 1 and 3, the dust recycling mechanism 3 is disposed on the conveying pipeline 2 and located on the side of the dust guiding pipeline 6 opposite to the blower 1 , the dust recycling mechanism 3 includes an inlet pipe 31, a filter box 33 and an outlet pipe 32, the inlet pipe 31 end is connected with the conveying pipeline 2, the other end is connected with the top of the filter box 33, the outlet pipe 32 end is connected with the bottom of the filter box 33, the other end is connected with the conveying pipeline 2 and located on the side of the inlet pipe 31 opposite to the dust guiding pipeline 6 .

As shown in fig. 1 and 3, the inlet pipe 31 is provided with an th shutoff valve 34, the conveying pipe 2 is provided with a second shutoff valve 21, and the second shutoff valve 21 is located between the inlet pipe 31 and the outlet pipe 32. when the st shutoff valve 34 is closed and the second shutoff valve 21 is opened, the airflow with the dust entrained therein only flows through the conveying pipe 2, but not through the filter box 33. when the th shutoff valve 34 is opened and the second shutoff valve 21 is closed, the airflow with the dust entrained therein flows through the filter box 33, and the dust in the airflow is filtered.

As shown in FIG. 3, the filter box 33 comprises a box body 332 and a box cover 333, wherein the box cover 333 is hinged with the box body 332, the other is provided with a claw 338 and fixed by a reverse-pull clamp 339 on the box body 332, the top of the box body 332 is provided with a support frame 334, the support frame 334 is arranged along the horizontal direction and is positioned below the nozzle of the inlet pipe 31, and five mounting holes 335 are arranged on the support frame 334.

As shown in fig. 3, the mounting holes 335 are provided along the longitudinal direction of the filter cassette 33 and are aligned in the width direction of the filter cassette 33. The five filter bags 331 respectively pass through the five mounting holes 335, and the frame 336 fixed at the pocket mouths of the filter bags 331 is placed at the edges of the mounting holes 335 from top to bottom. For making filter bag 331 and support frame 334 be connected more stably, mounting hole 335 border still encircles and is equipped with recess 337, and frame 336 inlays in recess 337, offsets with the tank bottom and the lateral wall of recess 337.

As shown in fig. 1 and 4, the dust replenishing mechanism 4 is disposed on the top of the sidewall of the liner 7, and includes a storage hopper 41, a material guiding pipe 42 and a motor 46, the storage hopper 41 is fixedly connected to the sidewall of the liner 7, and the bottom end of the storage hopper 41 is connected to the end of the material guiding pipe 42, the material guiding pipe 42 is disposed along the horizontal direction, the end of the material guiding pipe facing away from the storage hopper 41 is directly connected to the conveying pipeline 2, and a third shut-off valve 43 is disposed adjacent to the conveying pipeline 2.

As shown in fig. 4, a rotating shaft 44 is rotatably mounted in the material guiding pipe 42, the rotating shaft 44 is coaxial with the material guiding pipe 42, the end of the rotating shaft 44 facing away from the conveying pipeline 2 penetrates out of the end surface of the material guiding pipe 42 and is connected with the shaft of the motor 46, a helical blade 45 is wound on the segment of the rotating shaft 44 in the material guiding pipe 42, the edge of the helical blade 45 is abutted against the inner wall of the material guiding pipe 42, and is used for conveying dust from the end to the other end of the material guiding pipe 42.

The specific implementation process comprises the following steps:

when the dust test is carried out, the th stop valve 34 and the third stop valve 43 are closed, the second stop valve 21 is opened, the airflow wrapped with the dust only flows through the conveying pipeline 2. when the dust is replaced, the second stop valve 21 and the third stop valve 43 are firstly closed, the th stop valve 34 is opened, the airflow wrapped with the dust flows through the filter box 33 and is filtered and collected by the filter bag 331, then the th stop valve 34 is closed, the second stop valve 21 and the third stop valve 43 are opened, the dust in the storage hopper 41 enters the inner container 7 through the guide pipe 42, the third stop valve 43 is closed after the supplement of the dust is completed, and the dust test box can normally operate to carry out the test.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

The automatic powder changing device for the dust test box comprises a blower (1) and a conveying pipeline (2), wherein the end of the conveying pipeline (2) is connected with an air outlet of the blower (1), the end of the conveying pipeline is connected with an inner container (7), the automatic powder changing device is characterized by further comprising a dust recycling mechanism (3) and a dust supplementing mechanism (4), the dust recycling mechanism (3) comprises a leading-in pipe (31), a leading-out pipe (32) and a filtering box (33), the end of the leading-in pipe (31) is connected with the filtering box (33), the end of the dust recycling mechanism is connected with the conveying pipeline (2), a shutoff valve (34) is arranged on the leading-in pipe (31), the end of the leading-out pipe (32) is connected with the filtering box (33), the end of the conveying pipeline (2) is connected with the conveying pipeline, a filter bag (331) is arranged in the filtering box (33), a second leading-in shutoff valve (21) is arranged on the conveying pipeline (2), the second shutoff valve (31), the second shutoff valve (21) and the leading-in-out pipe (32) are connected with the conveying pipeline (32), and the feeding pipeline (42) and the feeding pipe (42) is communicated with a feeding mechanism (42), and the feeding pipe (42) which comprises a feeding pipe (41) and a feeding pipe (42) connected with a feeding hopper (42).
2. The automatic powder changing device for the dust test box according to claim 1, wherein the filter box (33) comprises a box body (332) and a box cover (333), a support frame (334) is arranged in the box body (332), the support frame (334) is arranged along the horizontal direction, a mounting hole (335) is formed in the support frame (334), a frame (336) is fixedly connected to a bag opening of the filter bag (331), the frame (336) is placed at the edge of the mounting hole (335), a pipe opening of the inlet pipe (31) is located above the filter bag (331), and a pipe opening of the outlet pipe (32) is located below the filter bag (331).
3. The automatic powder changing device for the dust test box according to claim 2, wherein a groove (337) is annularly formed at the edge of the mounting hole (335), the frame (336) is embedded in the groove (337), and the frame (336) abuts against the side wall and the bottom surface of the groove (337).
4. The automatic powder changing device for the dust test box according to claim 1, wherein the dust supplementing mechanism (4) further comprises a rotating shaft (44), a helical blade (45) and a motor (46), the rotating shaft (44) is rotatably erected in the material guide tube (42), the rotating shaft (44) and the material guide tube (42) are coaxially arranged, the end of the rotating shaft (44) is arranged on the end face of the material guide tube (42) in a penetrating manner and connected with a crankshaft of the motor (46), the helical blade (45) is wound on the rotating shaft (44), and the edge of the helical blade (45) abuts against the inner wall of the material guide tube (42).
5. The automatic powder changing device for the dust test box according to claim 1, wherein the guide tube (42) is directly connected with the conveying pipeline (2).
6. The automatic powder changing device for the dust test box according to claim 1, further comprising an air guide pipe (5) and a dust guide pipe (6), wherein the end of the air guide pipe (5) is connected with the side wall of the dust hopper (8), the other end is connected with the air inlet of the blower (1), the end of the dust guide pipe (6) is connected with the bottom end of the dust hopper (8), the other end is connected with the conveying pipe (2), and the dust guide pipe (6) is located on the side of the inlet pipe (31) facing the blower (1).
7. automatic powder changing device for dust test box according to claim 6, wherein the air duct (5) is provided with a screen (51) towards the end of the ash hopper (8).
8. The automatic powder changing device for the dust test box according to claim 7, wherein the middle of the filter screen (51) protrudes towards the interior of the ash bucket (8), and the top of the filter screen (51) is covered with a baffle plate (52).