Partition net safety device

Abstract

The utility model relates to the technical field of gas filtration, and discloses a separation net safety device which comprises a gas inlet pipe and a gas outlet pipe, an exhaust pipe; a filter chamber; the roller is rotationally arranged in the filter cavity, the peripheral surface of the roller is covered with a partition net body, the filter cavity is divided into an air inlet area and an air exhaust area by the partition net body, the air inlet area is communicated with the air inlet pipe, and the air exhaust area is communicated with the air exhaust pipe; the bypass pipe is communicated with the air inlet pipe; the first air valve is arranged on the bypass pipe; the first pressure sensor is arranged on the air inlet pipe, and the first pressure sensor is located between the bypass pipe and the filtering cavity. According to the separation net safety device, when the separation net body is blocked, the pressure value obtained by the first pressure sensor is increased, an operator is reminded, at the moment, the first air valve is opened, part of airflow in the air inlet pipe can flow out through the bypass pipe, the pressure at the air inlet pipe is released, the air pressure is reduced, and safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas filtering, in particular to a screen safety device. Background Art

[0002] The exhaust gas discharged from the factory production environment is usually mixed with a lot of dust, which needs to be filtered before being discharged. At present, one of the main ways to filter dust is to set a rotating screen body for filtering. However, due to its limited air flow area, in order to prevent the screen body from being blocked and reduce the cleaning frequency of the screen body, the filter holes on the screen body are usually set larger, resulting in poor filtering effect.

[0003] When the screen body is required to have a stronger filtering ability, the filter holes need to be reduced in size. At this time, the filter holes are prone to clogging, resulting in excessive wind pressure at the screen body, which poses a certain risk.

[0004] It can be seen that there is still room for improvement in the current mesh filter structure. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the background technology.

[0006] The utility model provides a separation net safety device, comprising:

[0007] Intake pipe;

[0008] Exhaust pipe;

[0009] Filter chamber;

[0010] A drum, the drum is rotatably arranged in the filter chamber, the circumferential surface of the drum is covered with a partition body, the partition body divides the filter chamber into an air inlet area and an air outlet area, the air inlet area is connected to the air inlet pipe, and the air outlet area is connected to the exhaust pipe;

[0011] A bypass pipe, the bypass pipe being in communication with the air intake pipe;

[0012] a first air valve, wherein the first air valve is arranged on the bypass pipe;

[0013] A first pressure sensor is provided on the intake pipe, and the first pressure sensor is located between the bypass pipe and the filter chamber.

[0014] The beneficial effects of the utility model: the screen safety device is a drum-type structure covering the screen body on the drum, which has good filtering ability. When the screen body is blocked, the pressure value obtained by the first pressure sensor increases, reminding the operator. At this time, open the first air valve to allow part of the air flow in the intake pipe to flow out through the bypass pipe, release the pressure at the intake pipe, reduce the air pressure, and ensure safety.

[0015] As some sub-solutions of the above technical solution, the screen safety device also includes a second air valve, and the second air valve is arranged between the bypass pipe and the filter chamber.

[0016] As some sub-solutions of the above technical solution, the first pressure sensor is located between the second air valve and the filter chamber.

[0017] As some sub-solutions of the above technical solution, the isolation net safety device also includes a second pressure sensor, and the second pressure sensor is arranged on the exhaust pipe.

[0018] As some sub-solutions of the above technical solution, the isolation net safety device also includes a controller, and the first pressure sensor and the second pressure sensor are both connected to the controller signal.

[0019] As some sub-solutions of the above technical solution, the first air valve is an electric air valve, and the first air valve is connected to the controller signal.

[0020] As some sub-solutions of the above technical solution, the second air valve is an electric air valve, and the second air valve is connected to the controller signal.

[0021] As some sub-solutions of the above technical solution, a dust box is provided in the filter cavity, and the dust box is located below the drum. An air blowing pipe is also provided in the drum, and the air blowing pipe faces the dust box.

[0022] As some sub-schemes of the above technical scheme, the isolation net safety device also includes a rotating mechanism, which includes a motor, a driving wheel, a first roller, a second roller, and a driven wheel. The first roller and the second roller are both rotatably arranged in the filter chamber, and the drum is supported by the first roller and the second roller. The motor is installed on the filter chamber, the motor is drivingly connected to the driving wheel, the drum is transmission-connected to the driven wheel, and the driving wheel abuts against the driven wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 It is a structural schematic diagram of an embodiment of a separation net safety device;

[0025] Figure 2 It is a structural schematic diagram of the roller and the rotating mechanism.

[0026] In the attached figure:

[0027] 1- Intake pipe;

[0028] 2- Exhaust pipe;

[0029] 3- Filter chamber;

[0030] 41-drum; 42-screen body;

[0031] 5-Bypass pipe;

[0032] 61-first air valve; 62-second air valve;

[0033] 71 - a first pressure sensor; 72 - a second pressure sensor;

[0034] 81-dust box; 82-motor; 83-first roller; 84-second roller;

[0035] 9-Blow the air tube. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0038] In the description of the present utility model, the meaning of "several" is an indefinite quantity, the meaning of "multiple" is more than two, "greater than", "less than", "exceed" and the like are understood as not including the number itself, and "above", "below", "within" and the like are understood as including the number itself. If there is a description of the first and the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. The "and / or" that appears in the full text indicates three parallel solutions. For example, A and / or B indicates the solution satisfied by A, the solution satisfied by B, or the solution satisfied by both A and B.

[0039] In the description of the utility model, if there is a short sentence containing multiple parallel features, the attributive defines the closest feature, for example: B, C, and E connected to D are arranged on A, which means that B is arranged on A and E is connected to D, and does not constitute a limitation on C; but attributives that indicate the relationship between features, such as "set at intervals" and "arranged in a ring", do not belong to this category. If the word "all" is preceded by an attributive, it means that all the features in the short sentence are limited, such as B, C, and D are all arranged on A, which means that B, C, and D are all arranged on A. For a sentence with an omitted subject, the omitted subject is the subject of the previous sentence, that is, B is arranged on A, including C, which means that B is arranged on A and A includes C.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] Combine the following Figure 1 to Figure 2 The embodiments of the utility model are described.

[0042] The present embodiment relates to a screen safety device, which can improve safety.

[0043] Screen safety device, including:

[0044] Intake pipe 1;

[0045] Exhaust pipe 2;

[0046] Filter chamber 3;

[0047] A drum 41, the drum 41 is rotatably disposed in the filter chamber 3, the circumferential surface of the drum 41 is covered with a partition body 42, the partition body 42 separates the filter chamber 3 into an air inlet area and an air outlet area, the air inlet area is connected to the air inlet pipe 1, and the air outlet area is connected to the exhaust pipe 2;

[0048] A bypass pipe 5, the bypass pipe 5 is connected to the intake pipe 1;

[0049] A first air valve 61, wherein the first air valve 61 is disposed on the bypass pipe 5;

[0050] The first pressure sensor 71 is disposed on the intake pipe 1 , and the first pressure sensor 71 is located between the bypass pipe 5 and the filter chamber 3 .

[0051] The screen safety device is a drum 41 type structure in which a screen body 42 is covered on a drum 41, and has good filtering ability. When the screen body 42 is blocked, the pressure value obtained by the first pressure sensor 71 increases, alerting the operator. At this time, the first air valve 61 is opened to allow part of the air flow in the intake pipe 1 to flow out through the bypass pipe 5, thereby releasing the pressure at the intake pipe 1, reducing the air pressure, and ensuring safety.

[0052] In this embodiment, the screen body 42 on the drum 41 divides the filter chamber 3 into an air inlet side and an air outlet side. An air inlet is provided on the air inlet side, and an air outlet is provided on the air outlet side. The air inlet is located outside the drum 41, and the air outlet is located inside the drum 41. When the first air valve 61 is opened, the gas to be filtered flows out of the exhaust pipe 2 through the air inlet, the screen body 42, and the air outlet in sequence. Under the filtering action of the screen body 42, the smoke and dust in the gas to be filtered is blocked, thereby realizing the filtering function.

[0053] During continuous filtering, dust accumulates on the outside. At this time, the flow capacity of the screen body 42 is pressed down, and the air pressure outside the drum 41 increases continuously. When the air pressure obtained by the first pressure sensor 71 rises to a preset value, an alarm is issued to remind the staff to close the damper mechanism to prevent the pressure in the filter chamber 3 from increasing continuously, thereby improving safety.

[0054] In order to further improve safety, the screen safety device further includes a second air valve 62, which is arranged between the bypass pipe 5 and the filter chamber 3. By arranging the second air valve 62 between the bypass pipe 5 and the filter chamber 3, when the first pressure sensor 71 obtains that the pressure at the air inlet pipe is too high, the second air valve 62 can be closed to avoid the pressure on the air inlet side of the filter chamber 3 from continuing to rise, thereby further improving the safety of the filtering structure.

[0055] Further, the first pressure sensor 71 is located between the second air valve 62 and the filter chamber 3. The first pressure sensor 71 is arranged between the second air valve 62 and the filter chamber 3. After the second air valve 62 is closed, the first pressure sensor 71 can still obtain the pressure value between the air inlet side of the filter chamber 3 and the second air valve 62. After the second air valve 62 is closed, the first pressure sensor 71 can timely obtain the change of the air inlet side pressure, thereby improving the accuracy of the pressure value reflected by the first pressure sensor 71.

[0056] In this embodiment, the isolation net safety device also includes a second pressure sensor 72, and the second pressure sensor 72 is arranged on the exhaust pipe 2. By configuring the second pressure sensor 72 to obtain the pressure value on the exhaust side, the second pressure sensor 72 can obtain, which can more comprehensively reflect the air pressure of the filter chamber 3, improve the accuracy of air pressure identification, and improve the accuracy of air pressure alarm. Secondly, when checking the problem of increased pressure in the filter chamber 3, the pressure value fed back by the second pressure sensor 72 can be used to determine whether the exhaust pipe 2 is blocked. Specifically, the values ​​of the first pressure sensor 71 and the second pressure sensor 72 under the normal working state of the filter chamber 3 are obtained. When the air pressure of the first pressure sensor 71 is abnormal, observe whether the value of the second pressure sensor 72 is significantly increased. If the value of the second pressure sensor 72 is significantly increased, it indicates that the exhaust pipe 2 is blocked.

[0057] In addition, the isolation net safety device also includes a controller, and the first pressure sensor 71 and the second pressure sensor 72 are both connected to the controller signal. The first pressure sensor 71 and the second pressure sensor 72 are both connected to the controller signal. The controller can compare the values ​​of the first pressure sensor 71 and the second pressure sensor 72 to identify the blockage of the exhaust pipe 2, and issue an alarm in time through an external alarm. The controller can specifically use a PLC or a single-chip microcomputer in the prior art. The PLC model can be Mitsubishi FX series FX3U-128MR-ES-A, and the single-chip microcomputer model can be 51 single-chip microcomputer, STMicroelectronics STM32F103, STM32F407, Philips LPC2220, Samsung's S3C2440, etc.

[0058] Furthermore, the first air valve 61 is an electric air valve, and the first air valve 61 is connected to the controller signal. The second air valve 62 is an electric air valve, and the second air valve 62 is connected to the controller signal. The first air valve 61 and the second air valve 62 are connected to the controller signal. When the pressure value obtained by the first pressure sensor 71 is too large, after sending a signal to the controller, the controller can send an instruction to open the first air valve 61 and close the second air valve 62 to achieve automatic pressure relief.

[0059] A dust box 81 is provided in the filter chamber 3, and the dust box 81 is located below the drum 41. An air blow pipe 9 is also provided in the drum 41, and the air blow pipe 9 faces the dust box 81. Dust will accumulate on the outer wall of the screen body 42 in the continuous filtering state. The air blow pipe 9 and the dust box 81 can conveniently blow the dust on the outer wall of the screen body 42 to the dust box 81, so as to conveniently and quickly clean the dust on the screen body 42.

[0060] The screen safety device also includes a rotating mechanism, which includes a motor 82, a driving wheel, a first roller 83, a second roller 84, and a driven wheel. The first roller 83 and the second roller 84 are both rotatably arranged in the filter chamber 3, and the drum 41 is supported by the first roller 83 and the second roller 84. The motor 82 is installed on the filter chamber 3, and the motor 82 is drivingly connected to the driving wheel. The drum 41 is transmission-connected to the driven wheel, and the driving wheel abuts against the driven wheel.

[0061] The first roller 83 and the second roller 84 support the drum 41 in the filter chamber 3. Even if dust accumulates on the outer wall of the drum 41, the first roller 83 and the second roller 84 will not affect the rolling support of the drum 41. The drum 41 can still maintain contact with the first roller 83 and the second roller 84 under the action of gravity, and the rolling state of the drum 41 is not affected in a dusty environment. The rotating mechanism drives the rollers to rotate through the driving motor 82, the driving wheel and the driven wheel, and reliably and conveniently realizes the function of rotating the drum 41 in a dusty environment. At the same time, the supporting structure of the first roller 83 and the second roller 84 has little effect on the flow area in the filter chamber 3.

[0062] In this embodiment, one end of the roller 41 is supported by the first roller 83 and the second roller 84, and the other end of the roller 41 is supported by a bearing, so as to achieve axial positioning of the roller 41, ensure the rotation accuracy of the roller 41, reduce the operating noise of the roller 41, reduce the rotation wear of the roller 41, and improve the service life.

[0063] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. The safety device of the isolation net is characterized by: include: Intake pipe (1); Exhaust pipe (2); Filter chamber (3); a drum (41), the drum (41) being rotatably disposed in the filter chamber (3), the circumferential surface of the drum (41) being covered with a partition body (42), the partition body (42) dividing the filter chamber (3) into an air inlet area and an air outlet area, the air inlet area being connected to the air inlet pipe (1), and the air outlet area being connected to the air outlet pipe (2); A bypass pipe (5), the bypass pipe (5) being in communication with the air intake pipe (1); a first air valve (61), wherein the first air valve (61) is arranged on the bypass pipe (5); A first pressure sensor (71), wherein the first pressure sensor (71) is arranged on the air intake pipe (1), and the first pressure sensor (71) is located between the bypass pipe (5) and the filter chamber (3).

2. The screen safety device according to claim 1, characterized in that: The screen safety device further comprises a second air valve (62), wherein the second air valve (62) is arranged between the bypass pipe (5) and the filter chamber (3).

3. The screen safety device according to claim 2, characterized in that: The first pressure sensor (71) is located between the second air valve (62) and the filter chamber (3).

4. The screen safety device according to claim 2, characterized in that: The isolation net safety device also includes a second pressure sensor (72), and the second pressure sensor (72) is arranged on the exhaust pipe (2).

5. The isolation safety device according to claim 4, characterized in that: The isolation net safety device also includes a controller, and the first pressure sensor (71) and the second pressure sensor (72) are both connected to the controller by signal.

6. The screen safety device according to claim 5, characterized in that: The first air valve (61) is an electric air valve, and the first air valve (61) is connected to the controller signal.

7. The screen safety device according to claim 5 or 6, characterized in that: The second air valve (62) is an electric air valve, and the second air valve (62) is connected to the controller signal.

8. The screen safety device according to claim 1, characterized in that: A dust box (81) is provided in the filter cavity (3), and the dust box (81) is located below the drum (41). An air blowing pipe (9) is also provided in the drum (41), and the air blowing pipe (9) faces the dust box (81).

9. The screen safety device according to claim 1, characterized in that: The screen safety device also includes a rotating mechanism, which includes a motor (82), a driving wheel, a first roller (83), a second roller (84), and a driven wheel. The first roller (83) and the second roller (84) are both rotatably arranged in the filter chamber (3), and the drum (41) is supported by the first roller (83) and the second roller (84). The motor (82) is installed on the filter chamber (3), the motor (82) is connected to the driving wheel, the drum (41) is connected to the driven wheel, and the driving wheel is in contact with the driven wheel.

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