Cloud particle collector

Abstract

The cloud and fog particle collector includes a shell, and an airflow channel is arranged in the shell; the characteristic is that the airflow channel includes an air inlet channel and an oblique channel connected to the end of the air inlet channel and arranged obliquely, the air inlet channel is arranged in a horizontal direction, and the oblique channel is at an angle of 45° with the horizontal plane; the beneficial effect of the present invention is that: since the air inlet channel is arranged in a horizontal direction, the airflow will not form a large amount of turbulence, and the particles in the airflow will not collide with each other under the action of turbulence and agglomerate or split, thereby causing the volume of the particles to increase or decrease, and will not cause the distribution density of the particles outside the airflow channel and in the airflow entering the airflow channel to change significantly. Therefore, the distribution density and volume size of the particles outside the airflow channel and in the airflow entering the airflow channel are basically maintained consistent.

Description

[0001] The invention relates to a collector capable of collecting cloud and fog particles, and in particular to a cloud and fog particle collector with a flow channel. Technical Background

[0002] In the field of coal mining, since most of the ore layers are far away from the surface, open-pit mining cannot be used and underground mining must be used. When mining underground, miners need to go deep into the ground to form ducts for digging coal mines under the surface. The ventilation effect of the ducts is generally poor. A large amount of dust generated during the mining process accumulates in the ducts and cannot be effectively dispersed. If the dust in the gas accumulates to a certain concentration, it may cause an explosion due to sparks. In addition, inhaling too much dust will also cause miners to suffer from chronic lung diseases such as pneumoconiosis, resulting in a reduction in life expectancy. In order to effectively monitor the concentration and volume of particles floating in the air in the duct, the first task is to collect particles. There are various structures of particle collectors. For example, the particle collector disclosed in patent publication number CN206920196U includes an outer shell with an airflow channel, a blower is arranged in the airflow channel, and the blower is used to suck external particles into the airflow channel; a collection plate is detachably arranged in the airflow channel, and the collection plate is used to collect particles entering the airflow channel; the collection plate is arranged between the air inlet of the airflow channel and the blower; a through-air hole is arranged on the collection plate, or a through-air gap is formed between the collection plate and the inner wall of the airflow channel. However, after many sampling tests, it was found that the distortion of using this particle collector to collect particles in the duct is very large, and this particle collector is not suitable for collecting particles in the duct. Summary of the invention

[0003] Why is the particle collector disclosed in Chinese patent CN206920196U so distorted when collecting particles in the duct? After conducting in-depth research on this issue, the inventor found that the airflow in the duct generally flows horizontally, while the airflow channel of the particle collector of patent CN206920196U is arranged vertically. The airflow flowing in the duct needs to be converted from the horizontal direction to the vertical direction under the suction action of the blower before it can enter the airflow channel of the particle collector. In this process, a large amount of turbulence will be formed, which will affect the particle distribution density (concentration) in the airflow, that is, the particle distribution density entering the airflow channel of the particle collector has changed significantly from that before entering the airflow channel of the particle collector. At this time, the particle distribution density collected by the particle collector cannot accurately reflect the particle distribution density in the duct, and the particles in the turbulent flow will collide with each other and agglomerate or split, resulting in a change in the volume of the particles.

[0004] In order to solve the above technical problems, the present invention proposes a cloud and mist particle collector, comprising a shell, in which an air flow channel is arranged; characterized in that the air flow channel comprises an air inlet channel and an oblique channel connected to the end of the air inlet channel and arranged obliquely, the air inlet channel is arranged in a horizontal direction, and the oblique channel forms an angle of 45° with the horizontal plane; a support frame for supporting a sampling piece is installed in the oblique channel, the support frame is positioned on the shell and can allow the airflow in the oblique channel to pass through, and when sampling is working, the sampling piece is arranged horizontally on the support frame so as to collect cloud and mist particles contained in the flowing airflow in the oblique channel; and also includes an axial flow fan, which is installed on the shell and located downstream of the support frame so as to allow the airflow in the air flow channel to flow when it is working.

[0005] Among them, the air inlet channel is arranged in a horizontal direction, so that the arrangement direction of the air inlet channel is basically consistent with the flow direction of the horizontally flowing airflow in the duct. The airflow in the duct can smoothly enter the air inlet channel along the original direction without changing the flow direction. In this way, a large amount of turbulence will not be formed in the airflow, and the particles in the airflow can continue to flow horizontally in the original direction. They will not collide with each other under the action of turbulence and agglomerate or split, thereby causing the volume of the particles to increase or decrease. The distribution density of the particles outside the airflow channel and in the airflow entering the airflow channel will not change significantly due to the action of turbulence. The reduction of turbulence is conducive to maintaining the distribution density and volume size of the particles outside the airflow channel and in the airflow entering the airflow channel basically consistent.

[0006] Among them, the oblique channel forms an angle of 45° with the horizontal plane. In this way, the oblique channel is utilized to change the flow direction of the airflow entering the airflow channel, so that the flow direction of the airflow entering the oblique channel also forms an angle of 45° with the horizontal plane, providing a basis for the sampling piece to receive particles in the airflow.

[0007] The support frame is positioned on the shell and can allow the airflow in the oblique channel to pass through, so that the support frame does not completely block the oblique channel, nor does it completely block the flow of the airflow.

[0008] According to the above technical scheme, compared with the prior art patent CN206920196U, the beneficial effects of the present invention are: first, since the air inlet channel is arranged in a horizontal direction, the airflow will not form a large amount of turbulence, and the particles in the airflow will not collide with each other under the action of turbulence and agglomerate or split, thereby causing the volume of the particles to increase or decrease, and will not cause the distribution density of the particles outside the airflow channel and in the airflow entering the airflow channel to change significantly. Therefore, the distribution density and volume size of the particles in the airflow outside the airflow channel and in the airflow entering the airflow channel are basically maintained consistent. Secondly, since the oblique channel is at an angle of 45° with the horizontal plane, the flow direction of the airflow entering the oblique channel is also at an angle of 45° with the horizontal plane, providing a basis for the sampling piece to receive particles in the airflow. In summary, the particle collection accuracy of the cloud and fog particle collector can be improved by using the above technical scheme.

[0009] In order to reduce the turbulence caused by the airflow colliding with the shell during the process of flowing from the air intake channel into the oblique channel, a further technical solution may be that the air intake channel and the oblique channel smoothly transition. In this way, the airflow can be reduced from colliding with the shell at the junction of the air intake channel and the oblique channel, and the airflow can smoothly flow from the air intake channel into the oblique channel. In order to achieve a smooth transition between the air intake channel and the oblique channel, an optional structure is to provide a rounded transition channel at the head end of the oblique channel, and the rounded transition channel is connected to the end of the air intake channel.

[0010] If the airflow flows directly from the oblique channel to the external space, i.e., the duct, it will definitely collide with the airflow flowing in the duct to form turbulence and affect the particle collection of other collectors downstream. In view of this, a further technical solution can also be that the airflow channel is S-shaped and also includes an outlet channel that has a height difference with the air inlet channel and is arranged in a horizontal direction, and the outlet channel is connected to the end of the oblique channel. In this way, the airflow flowing out of the oblique channel can enter the outlet channel and flow horizontally under the guidance of the outlet channel. Finally, the airflow flowing out of the outlet channel basically flows in the horizontal direction, which is basically consistent with the flow direction of the horizontally flowing airflow in the duct, reducing the formation of turbulence.

[0011] In order to fix the shell, a further technical solution may also include a fixed base and a first bracket and a second bracket arranged on the fixed base and spaced apart from each other in front and back, a notch portion is provided at the top of the first bracket, and the second bracket is in the shape of a door frame; the position of the air inlet channel is higher than the air outlet channel, the shell forming the air inlet channel is supported on the notch portion, and the shell forming the air outlet channel is inserted into the inner space surrounded by the second bracket and the fixed base. In this way, stable positioning and support can be provided for the shell.

[0012] The blades of the axial flow fan will greatly disturb the surrounding airflow, and the airflow around the axial flow fan is turbulent. If the axial flow fan is too close to the sampling piece on the support frame, it will affect the sampling of the sampling piece. In view of this, a further technical solution can also be that the axial flow fan is arranged at the downstream end of the airflow channel. In this way, the axial flow fan can be away from the support frame, reducing the adverse effect on the sampling authenticity of the sampling piece.

[0013] A further technical solution may be to provide an air hole on the support frame, so as to reduce the obstruction of the support frame to the airflow and particles in the airflow, and reduce the probability of particles colliding with the support frame.

[0014] A further technical solution may be that a pair of the air holes are arranged at intervals on the left and right sides on the support frame, and a mounting area for supporting the sampling piece is provided between the pair of the air holes.

[0015] A further technical solution may be that side wall holes are respectively provided on the left and right side walls of the shell, and the support frame can be transversely passed through the side wall holes and erected on the left and right side walls of the shell; and also includes a pair of seals, which can be respectively provided on the left and right ends of the support frame and seal a pair of side wall holes respectively. In this way, the installation and disassembly of the support frame is facilitated, and the installation and disassembly of the adopted sheet is also facilitated. In addition, the side wall holes are sealed by the seals to reduce the leakage of the airflow in the airflow channel through the side wall holes, which is conducive to maintaining the flow stability of the airflow in the airflow channel and improving the authenticity of the sampling.

[0016] A further technical solution may be that bosses are respectively provided at the left and right ends of the support frame, the outer diameter of the bosses is smaller than the inner diameter of the side wall hole, and when the support frame is mounted on the left and right shell side walls of the shell, the bosses are located outside the air flow channel; the outer diameter of the seal is larger than the inner diameter of the side wall hole, and the seal can be provided on the support frame and located between the bosses and the shell side walls to prevent the bosses from passing through the side wall hole. In this way, the seal can also play a role in fixing the support frame.

[0017] A further technical solution may be that the sealing member is U-shaped and has a bayonet, and the sealing member can be connected to the support frame by the bayonet, so as to facilitate the installation and removal of the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the front view direction of the cloud and fog particle collector applying the technical solution of the present invention;

[0019] Figure 2 It is a schematic diagram of the exploded structure of a cloud and fog particle collector using the technical solution of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of a cloud and fog particle collector using the technical solution of the present invention;

[0021] Figure 4 It is a schematic diagram of the top view of the structure of the support frame of the cloud and mist particle collector using the technical solution of the present invention;

[0022] Figure 5 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction. DETAILED DESCRIPTION

[0023] like Figure 1 , Figure 2 and Figure 3As shown, the present invention proposes a cloud and mist particle collector, including a shell 100, in which an air flow channel 1 is arranged; the air flow channel 1 includes an air inlet channel 11 and an oblique channel 12 connected to the end of the air inlet channel 11 and arranged obliquely, the air inlet channel 11 is arranged in a horizontal direction, and the oblique channel 12 forms an angle of 45° with the horizontal plane; a support frame 4 for supporting a sampling piece is installed in the oblique channel 12, the support frame 4 is positioned on the shell 100 and can allow the airflow in the oblique channel 12 to pass, when the sampling is working, the sampling piece is arranged horizontally on the support frame 4 so that the cloud and mist particles contained in the flowing airflow in the oblique channel 12 can be collected; it also includes an axial flow fan 300, the axial flow fan 300 is installed on the shell 100 and is located downstream of the support frame 4 so that the airflow in the air flow channel 1 can flow when it is working. When the cloud and mist particle collector performs sampling, the axial flow fan 300 is started, and the airflow in the external space, i.e., the duct, enters the air inlet channel 11 of the airflow channel 1, and then flows into the oblique channel 12. Part of the airflow will collide with the sampling piece on the support frame 4, and the sampling piece collects the cloud and mist particles contained in the airflow, and the rest of the airflow continues to flow and flows out to the external space, i.e., the duct.

[0024] The air inlet channel 11 is arranged in a horizontal direction, so that the arrangement direction of the air inlet channel 11 is basically consistent with the flow direction of the horizontally flowing airflow in the duct. The airflow in the duct can smoothly enter the air inlet channel 11 along the original direction without changing the flow direction. In this way, a large amount of turbulence will not be formed in the airflow, and the particles in the airflow can continue to flow horizontally in the original direction. They will not collide with each other under the action of turbulence and agglomerate or split, thereby causing the volume of the particles to increase or decrease. The distribution density of the particles outside the airflow channel 1 and in the airflow entering the airflow channel 1 will not change significantly due to the action of turbulence. The reduction of turbulence is conducive to maintaining the distribution density and volume of the particles outside the airflow channel 1 and in the airflow entering the airflow channel 1 basically consistent. Secondly, the oblique channel 12 is at an angle of 45° to the horizontal plane, so that the oblique channel 12 is used to change the flow direction of the airflow entering the airflow channel 1, so that the flow direction of the airflow entering the oblique channel 12 is also at an angle of 45° to the horizontal plane, providing a basis for the sampling piece to receive particles in the airflow. In summary, the above technical solution can improve the particle collection accuracy of the cloud and fog particle collector.

[0025] like Figure 1 and Figure 3As shown, the blades of the axial flow fan 300 will greatly disturb the surrounding airflow, and the airflow around the axial flow fan 300 is turbulent. If the axial flow fan 300 is too close to the sampling piece on the support frame 4, it will affect the sampling of the sampling piece. In view of this, the axial flow fan 300 can be set at the downstream end of the air flow channel 1. In this embodiment, the axial flow fan 300 is set at the end of the outlet channel 13 to be discussed below. In this way, the axial flow fan 300 can be far away from the support frame 4, reducing the adverse effects on the sampling authenticity of the sampling piece.

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, in order to reduce the turbulence caused by the airflow colliding with the housing 100 during the process of the airflow flowing from the air intake channel 11 into the oblique channel 12, the air intake channel 11 and the oblique channel 12 are smoothly transitioned. In order to achieve the smooth transition between the air intake channel 11 and the oblique channel 12, a rounded transition channel 19 is provided at the head end of the oblique channel 12, and the rounded transition channel 19 is connected to the end of the air intake channel 11. In this way, the airflow can be reduced from colliding with the housing at the junction of the air intake channel 11 and the oblique channel 12, and the airflow can smoothly flow from the air intake channel 11 into the oblique channel 12.

[0027] If the airflow flows directly from the oblique channel 12 to the external space, i.e., the duct, it will definitely collide with the airflow flowing in the duct to form turbulence and affect the particle collection of other collectors downstream. In view of this, a further technical solution is that the airflow channel 1 is S-shaped and also includes an outlet channel 13 that has a height difference with the air inlet channel 11 and is arranged in a horizontal direction, and the outlet channel 13 is connected to the end of the oblique channel 12. In this way, under the guidance of the outlet channel 13, the airflow flowing out of the outlet channel 13 basically flows in the horizontal direction, which is basically consistent with the flow direction of the horizontally flowing airflow in the duct, reducing the formation of turbulence.

[0028] like Figure 2 , Figure 4 and Figure 5As shown, the support frame 4 includes a frame body 41, a pair of air holes (411, 412) arranged at intervals on the left and right are provided on the frame body 41, and a mounting area 413 for supporting the sampling sheet is provided between the pair of air holes (411, 412). In this way, the air holes (411, 412) can reduce the obstruction of the support frame 4 to the airflow and the particles in the airflow, and reduce the probability of the particles colliding with the support frame 4. In order to fix the support frame 4, side wall holes (1101, 1101a) are respectively arranged on the left and right shell side walls (110, 110a) of the shell 100, and the support frame 4 also includes bosses (42, 42a) arranged on the left and right ends of the frame body 41, the outer diameter of the bosses (42, 42a) is smaller than the inner diameter of the side wall holes (1101, 1101a), and the bosses (42, 42a) can pass through the side wall holes (1101, 1101a), so that the support frame 4 can pass through the side wall holes (1101, 1101a) horizontally and be mounted on the left and right shell side walls (110, 110a). When the support frame 4 is mounted on the left and right shell side walls (110, 110a) of the shell 100, the bosses (42, 42a) are located outside the airflow channel 1. The invention also includes a pair of sealing members (3, 3a), wherein the outer diameter of the sealing member 3 is larger than the inner diameter of the side wall hole 1101, and the sealing member 3 is U-shaped so as to have a bayonet 30. The sealing member 3 is clamped at the left end of the support frame 4 through the bayonet 30 and is located between the boss 42 and the shell side wall 110, thereby preventing the boss 42 from passing through the side wall hole 1101, and the sealing member 3 seals the side wall hole 1101 under the compression of the boss 42 and the shell side wall 110. The outer diameter of the sealing member 3a is larger than the inner diameter of the side wall hole 1101a. The sealing member 3a is U-shaped and has a bayonet 30a. The sealing member 3a is clamped at the right end of the support frame 4a through the bayonet 30a and is located between the boss 42a and the shell side wall 110a, thereby preventing the boss 42a from passing through the side wall hole 1101a. The sealing member 3a seals the side wall hole 1101a under the compression of the boss 42a and the shell side wall 110a. It can be seen that the sealing member (3, 3a) can seal the side wall holes (1101, 1101a), reduce the leakage of the airflow in the airflow channel 1 through the side wall holes (1101, 1101a), thereby maintaining the stability of the airflow in the airflow channel 1 and improving the authenticity of sampling. In addition, the sealing member (3, 3a) can also play a role in fixing the support frame 4, and the bayonet (30, 30a) facilitates the installation and removal of the sealing member (3, 3a), which in turn facilitates the installation and removal of the support frame 4, and also facilitates the installation and removal of the sheet.

[0029] like Figure 2 and Figure 3 As shown, further, it also includes a fixed base 2 and a first bracket 21 and a second bracket 22 arranged on the fixed base 2 and spaced apart in front and back, a notch 210 is arranged at the top of the first bracket 21, and the second bracket 22 is in the shape of a door frame; the position of the air inlet channel 11 is higher than the air outlet channel 13, the shell forming the air inlet channel 11 is supported on the notch 210, and the shell forming the air outlet channel 13 is inserted in the inner space surrounded by the second bracket 22 and the fixed base 2. In this way, the shell 100 can be provided with stable positioning and support.

Claims

1. A cloud and mist particle collector, comprising a housing, wherein an air flow channel is provided in the housing; characterized in that: The airflow channel includes an air inlet channel and an oblique channel connected to the end of the air inlet channel and arranged obliquely, the air inlet channel is arranged in a horizontal direction, and the oblique channel forms an angle of 45° with the horizontal plane; a support frame for supporting a sampling piece is installed in the oblique channel, the support frame is positioned on the shell and can allow the airflow in the oblique channel to pass through, and when sampling is working, the sampling piece is arranged horizontally on the support frame so that the cloud particles contained in the flowing airflow in the oblique channel can be collected; it also includes an axial flow fan, which is installed on the shell and located downstream of the support frame so that the airflow in the airflow channel can flow when it is working; the air inlet channel and the oblique channel have a smooth transition; the airflow channel is S-shaped and also includes an air outlet channel that has a height difference with the air inlet channel and is arranged in a horizontal direction, and the air outlet channel is connected to the end of the oblique channel; It also includes a fixed base and a first bracket and a second bracket arranged on the fixed base and spaced apart from each other in the front and rear, a notch portion being provided at the top end of the first bracket, and the second bracket being in the shape of a door frame; the position of the air inlet channel is higher than the air outlet channel, a shell forming the air inlet channel is supported on the notch portion, and a shell forming the air outlet channel is inserted into an inner space surrounded by the second bracket and the fixed base.

2. The cloud and mist particle collector according to claim 1, characterized in that: The axial flow fan is disposed at a downstream end of the air flow channel.

3. The cloud and mist particle collector according to claim 1 or 2, characterized in that: The support frame is provided with air holes.

4. The cloud and mist particle collector according to claim 3, characterized in that: A pair of air holes are arranged at intervals on the left and right sides on the support frame, and a mounting area for supporting the sampling sheet is provided between the pair of air holes.

5. The cloud and mist particle collector according to claim 1 or 2, characterized in that: Side wall holes are respectively arranged on the left and right shell side walls of the shell, and the support frame can pass through the side wall holes horizontally and be erected on the left and right shell side walls of the shell; it also includes a pair of sealing members, which can be respectively arranged on the left and right ends of the support frame and respectively seal the pair of side wall holes.

6. The cloud and mist particle collector according to claim 5, characterized in that: Bosses are respectively arranged at the left and right ends of the support frame, and the outer diameter of the bosses is smaller than the inner diameter of the side wall hole. When the support frame is mounted on the left and right shell side walls of the shell, the bosses are located outside the air flow channel; the outer diameter of the seal is larger than the inner diameter of the side wall hole, and the seal can be arranged on the support frame and located between the bosses and the shell side walls to prevent the bosses from passing through the side wall holes.

7. The cloud and mist particle collector according to claim 6, characterized in that: The sealing member is U-shaped and has a bayonet, and the sealing member can be clamped on the supporting frame through the bayonet.

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