Air purification device

Abstract

The utility model relates to an air purification device, and belongs to the technical field of purification devices. Comprising a box body and a plurality of filtering units arranged in the box body, an air inlet is formed in the top of one side wall of the box body, an air outlet is formed in the top of the other side wall of the box body, pressure transmitters are arranged in the box body and located in front of and behind the filtering units, and a flow meter is arranged at the air outlet. According to the utility model, the problem that key parameters such as flow, resistance and the like of the purification device cannot be automatically measured in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to an air purification device, belonging to the technical field of purification devices. Background Art

[0002] In nuclear power plants and nuclear chemical projects, the plant buildings of nuclear facilities are prone to breeding various bacteria and other harmful substances due to their airtightness. At the same time, there are usually radioactive elements in the plant buildings, which spread into the air, posing a direct threat to the life and health of people working in the plant buildings. Direct discharge will also cause serious pollution to the environment. Therefore, it is necessary to filter and purify the harmful substances produced. The purification device can not only filter harmful substances such as bacteria in the air, but also effectively filter radioactive particles, with a filtration efficiency of up to 99.99%. At present, the purification device is widely used in the ventilation systems of nuclear power plants and nuclear chemical industries and plays a key role.

[0003] However, the intelligence level of purification devices on the market at this stage is generally relatively backward. The measurement of key parameters such as flow rate and resistance mainly relies on the experience of workers. This not only places high demands on personnel, but also easily leads to inaccurate measurements. In particular, radiation environments require personnel to constantly go in and out for measurement, which can easily cause radiation damage to the measuring personnel.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide an air purification device, which solves the problem in the prior art that key parameters such as flow rate and resistance of the purification device cannot be automatically measured.

[0006] The technical problem to be solved by the utility model is achieved by adopting the following technical solutions:

[0007] An air purification device comprises a box body and a plurality of filter units arranged in the box body, an air inlet is opened at the top of one side wall of the box body, an air outlet is opened at the top of the other side wall of the box body, pressure transmitters are arranged in the box body before and after the filter units, and a flow meter is arranged at the air outlet.

[0008] The utility model is further configured as follows: a horizontally placed first bracket and a second bracket are installed in the box body, the first bracket is located above the second bracket, the filter unit is provided with 3-5 groups, the filter unit includes a pre-filter element installed on the first bracket, and a secondary filter element installed on the second bracket, and several of the pre-filter elements and several of the secondary filter elements are arranged in sequence along the air inlet direction of the air inlet.

[0009] The utility model is further configured as follows: a flow equalizing plate is provided in the box body, and the two sides of the flow equalizing plate are respectively fixedly connected to the opposite side walls inside the box body, one end of the flow equalizing plate is fixedly connected to the first bracket and is located between the first and second pre-filter elements along the air inlet direction, and the other end of the flow equalizing plate extends to the air inlet opening.

[0010] The utility model is further configured as follows: the flow equalizing plate is an arc-shaped plate with the middle portion arched upward, and the distance between the other end of the flow equalizing plate and the bottom end of the air inlet in the vertical direction is 0.25-0.3 times the total height of the air inlet.

[0011] The utility model is further configured as follows: a flow equalizing plate is provided between each adjacent two pre-filter elements in the box body, and both sides of the flow equalizing plate are respectively fixedly connected to the opposite side walls inside the box body, one end of several of the flow equalizing plates are fixedly connected to the first bracket, and the other ends of several of the flow equalizing plates are inclined upward and toward the air inlet, and in the air inlet direction, the distance between the other ends of several of the flow equalizing plates and the bottom end of the air inlet in the vertical direction gradually increases.

[0012] The utility model is further configured as follows: a side of the top of the box body away from the air outlet is configured as a rounded corner.

[0013] The utility model is further configured as follows: the pressure transmitter includes a first pressure transmitter, a second pressure transmitter and a third pressure transmitter, the first pressure transmitter is located above the pre-filter element, the second pressure transmitter is located between the pre-filter element and the secondary filter element, and the third pressure transmitter is located below the secondary filter element.

[0014] The utility model is further configured as follows: the distance between the first pressure transmitter and the top of the box in the vertical direction is 0.6-0.7 times the distance between the first frame and the top of the box, and the distance between the first pressure transmitter and the inner wall on the other side of the box in the horizontal direction is 0.6-0.7 times the width of the box;

[0015] The distance between the second pressure transmitter and the second frame in the vertical direction is 0.25-0.35 times the distance between the first frame and the second frame, and the distance between the second pressure transmitter and the inner wall of the other side of the box in the horizontal direction is 0.8-0.9 times the width of the box;

[0016] The vertical distance between the third pressure transmitter and the bottom of the box body is 0.25-0.35 times the distance between the second frame and the bottom of the box body, and the horizontal distance between the third pressure transmitter and the inner wall on the other side of the box body is 0.8-0.9 times the width of the box body.

[0017] The utility model is further configured as follows: the distance between the flow meter and the bottom end of the air outlet in the vertical direction is 0.6-0.7 times the total height of the air outlet.

[0018] The utility model is further configured as follows: a controller is provided outside the box, and the pressure transmitter and the flow meter are both electrically connected to the controller.

[0019] The beneficial effects of the utility model are:

[0020] By setting a flow plate structure at the air inlet, the flow field of the airflow inside the purification device is made more uniform, and the service life of the pre-filter element and the secondary filter element in each group of filter units is made more even, which is convenient for unified replacement;

[0021] By properly selecting the position of the pressure transmitter, the resistance changes of the pre-filter element and the secondary filter element during operation can be accurately and stably measured to reduce abnormal data;

[0022] The flow meter device and position relationship are reasonably designed on the outlet side of the purification device, so that the flow rate of the device can still be accurately measured under the complex flow field of the purification device;

[0023] A controller is set up to collect and display operating parameters such as filter resistance, dosage rate, flow rate, etc., making it convenient for staff to collect and analyze data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0025] Figure 2 It is a schematic diagram of the overall structure of the second embodiment of the present utility model.

[0026] In the figure: 1. box body; 2. first bracket; 3. second bracket; 4. pre-filter element; 5. secondary filter element; 6. air inlet; 7. air outlet; 8. flow meter; 9. controller; 10. flow equalizing plate; 11. first pressure transmitter; 12. second pressure transmitter; 13. third pressure transmitter. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the present invention is further described below in conjunction with specific illustrations. Example

[0028] like Figure 1As shown, an air purification device includes a box body 1 and a plurality of filter units arranged in the box body 1, wherein a horizontally placed first bracket 2 and a second bracket 3 are installed in the box body 1, the first bracket 2 is located above the second bracket 3, and the filter units are provided with 3-5 groups, preferably 4 groups, and the filter units include a pre-filter element 4 installed on the first bracket 2 and a secondary filter element 5 installed on the second bracket 3. The plurality of pre-filter elements 4 and the plurality of secondary filter elements 5 are arranged in sequence along the air inlet direction of the air inlet 6 (i.e., the width direction of the box body 1).

[0029] An air inlet 6 is provided at the top of one side wall of the box 1, and an air outlet 7 is provided at the top of the other side wall of the box 1. Pressure transmitters are provided in the box 1 before and after the filter unit, and a flow meter 8 is provided at the air outlet 7. A controller 9 is provided outside the box 1, and the pressure transmitter and the flow meter 8 are both electrically connected to the controller 9.

[0030] A flow equalizer 10 is provided in the box 1, and both sides of the flow equalizer 10 are fixedly connected to the opposite side walls inside the box 1, one end of the flow equalizer 10 is fixedly connected to the first bracket 2 and is located between the first and second pre-filter elements 4 along the air inlet direction, and the other end of the flow equalizer 10 extends to the opening of the air inlet 6. The flow equalizer 10 is an arc-shaped plate with the middle part arched upward, and the distance from the other end of the flow equalizer 10 to the bottom of the air inlet 6 in the vertical direction is 0.25-0.3 times the total height of the air inlet 6, preferably set to 0.275 times.

[0031] The pressure transmitter includes a first pressure transmitter 11, a second pressure transmitter 12 and a third pressure transmitter 13. The first pressure transmitter 11 is located above the pre-filter element 4. The vertical distance between the first pressure transmitter 11 and the top of the box body 1 is 0.6-0.7 times the distance between the first frame and the top of the box body 1, preferably set to 0.65 times. The horizontal distance between the first pressure transmitter 11 and the inner wall on the other side of the box body 1 is 0.6-0.7 times the width of the box body 1, preferably set to 0.65 times.

[0032] The second pressure transmitter 12 is located between the pre-filter element 4 and the secondary filter element. The vertical distance between the second pressure transmitter 12 and the second frame is 0.25-0.35 times the distance between the first frame and the second frame, preferably set to 0.3 times. The horizontal distance between the second pressure transmitter 12 and the inner wall on the other side of the box body 1 is 0.8-0.9 times the width of the box body 1, preferably set to 0.85 times.

[0033] The third pressure transmitter 13 is located below the secondary filter element. The vertical distance between the third pressure transmitter 13 and the bottom of the box body 1 is 0.25-0.35 times the distance between the second frame and the bottom of the box body 1, preferably set to 0.3 times. The horizontal distance between the third pressure transmitter 13 and the inner wall on the other side of the box body 1 is 0.8-0.9 times the width of the box body 1, preferably set to 0.85 times.

[0034] The distance between the flow meter 8 and the bottom end of the air outlet 7 in the vertical direction is 0.6-0.7 times the total height of the air outlet 7, preferably 0.65 times.

[0035] The implementation principle of the utility model is:

[0036] By setting a flow equalizing plate 10 structure at the air inlet 6, the flow field of the airflow inside the purification device is made more uniform, and the service life of the pre-filter element 4 and the secondary filter element 5 in each group of filter units is made more even, which is convenient for unified replacement; by reasonably selecting the position of the pressure transmitter, the resistance change of the pre-filter element 4 and the secondary filter element 5 during operation can be accurately and stably measured to reduce abnormal data; the flow meter 8 device and position relationship are reasonably designed on the outlet side of the purification device, and the flow rate of the device can still be accurately measured under the complex flow field of the purification device; a controller 9 is set to collect and display operating parameters such as filter element resistance, dosage rate, flow rate, etc., which is convenient for staff to collect and analyze data.

[0037] Embodiment 2

[0038] like Figure 2 As shown, the difference from Example 1 is that a flow equalizing plate 10 is provided between every two adjacent pre-filter elements 4 in the box body 1, and the flow equalizing plate 10 is an arc-shaped plate with the middle part arched upward, and the two sides of the flow equalizing plate 10 are respectively fixedly connected to the opposite side walls inside the box body 1, and one end of several flow equalizing plates 10 is fixedly connected to the first bracket 2, and the other ends of several flow equalizing plates 10 are inclined upward and toward the air inlet 6. In the air inlet direction, the distance between the other ends of several flow equalizing plates 10 and the bottom end of the air inlet 6 in the vertical direction gradually increases, and the side of the top of the box body 1 away from the air outlet 7 is set to a rounded corner.

[0039] The implementation principle of the utility model is:

[0040] By arranging a flow equalizing plate 10 between each filter unit, the airflow entering the purification device is further diverted, so that the airflow passing through each filter unit is more even and the flow field is more stable, which facilitates data collection and improves data accuracy.

[0041] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An air purification device, comprising a housing (1), and a plurality of filter units arranged in the housing (1), wherein an air inlet (6) is provided at the top of one side wall of the housing (1), and an air outlet (7) is provided at the top of another side wall of the housing (1), characterized in that: Pressure transmitters are provided in the box (1) before and after the filter unit, and a flow meter (8) is provided at the air outlet (7).

2. An air purification device according to claim 1, characterized in that: A first bracket (2) and a second bracket (3) are installed in a horizontal position in the box body (1); the first bracket (2) is located above the second bracket (3); the filter unit is provided with 3 to 5 groups; the filter unit comprises a pre-filter element (4) installed on the first bracket (2) and a secondary filter element (5) installed on the second bracket (3); a plurality of the pre-filter elements (4) and a plurality of the secondary filter elements (5) are arranged in sequence along the air inlet direction of the air inlet (6).

3. An air purification device according to claim 2, characterized in that: A flow equalizing plate (10) is provided inside the box body (1), and two sides of the flow equalizing plate (10) are respectively fixedly connected to opposite side walls inside the box body (1), one end of the flow equalizing plate (10) is fixedly connected to the first bracket (2) and is located between the first and second pre-filter elements (4) along the air inlet direction, and the other end of the flow equalizing plate (10) extends to the opening of the air inlet (6).

4. An air purification device according to claim 3, characterized in that: The flow balancing plate (10) is an arc-shaped plate with a middle portion arched upward, and the distance between the other end of the flow balancing plate (10) and the bottom end of the air inlet (6) in the vertical direction is 0.25-0.3 times the total height of the air inlet (6).

5. An air purification device according to claim 2, characterized in that: A flow equalizing plate (10) is provided between each adjacent two pre-filter elements (4) in the box body (1), and the two sides of the flow equalizing plate (10) are respectively fixedly connected to the opposite side walls inside the box body (1), one end of several flow equalizing plates (10) is fixedly connected to the first bracket (2), and the other ends of several flow equalizing plates (10) are inclined upward and toward the air inlet (6), and in the air inlet direction, the distance between the other ends of several flow equalizing plates (10) and the bottom end of the air inlet (6) in the vertical direction gradually increases.

6. An air purification device according to claim 5, characterized in that: A side of the top of the box body (1) away from the air outlet (7) is configured as a rounded corner.

7. An air purification device according to claim 4, characterized in that: The pressure transmitter comprises a first pressure transmitter (11), a second pressure transmitter (12) and a third pressure transmitter (13); the first pressure transmitter (11) is located above the pre-filter element (4); the second pressure transmitter (12) is located between the pre-filter element (4) and the secondary filter element (5); and the third pressure transmitter (13) is located below the secondary filter element (5).

8. An air purification device according to claim 7, characterized in that: The distance between the first pressure transmitter (11) and the top of the box (1) in the vertical direction is 0.6-0.7 times the distance between the first bracket and the top of the box (1), and the distance between the first pressure transmitter (11) and the inner wall of the other side of the box (1) in the horizontal direction is 0.6-0.7 times the width of the box (1); The distance between the second pressure transmitter (12) and the second bracket in the vertical direction is 0.25-0.35 times the distance between the first bracket and the second bracket, and the distance between the second pressure transmitter (12) and the inner wall of the other side of the box body (1) in the horizontal direction is 0.8-0.9 times the width of the box body (1); The distance between the third pressure transmitter (13) and the bottom of the box (1) in the vertical direction is 0.25-0.35 times the distance between the second bracket and the bottom of the box (1), and the distance between the third pressure transmitter (13) and the inner wall of the other side of the box (1) in the horizontal direction is 0.8-0.9 times the width of the box (1).

9. An air purification device according to claim 1, characterized in that: The distance between the flow meter (8) and the bottom end of the air outlet (7) in the vertical direction is 0.6-0.7 times the total height of the air outlet (7).

10. An air purification device according to claim 1, characterized in that: A controller (9) is provided outside the box (1), and the pressure transmitter and the flow meter (8) are both electrically connected to the controller (9).

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